./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1766613917 <...> Warning: Permanently added '10.128.0.236' (ED25519) to the list of known hosts. execve("./syz-executor1766613917", ["./syz-executor1766613917"], 0x7fff6f9be0b0 /* 10 vars */) = 0 brk(NULL) = 0x555556375000 brk(0x555556375d00) = 0x555556375d00 arch_prctl(ARCH_SET_FS, 0x555556375380) = 0 set_tid_address(0x555556375650) = 5024 set_robust_list(0x555556375660, 24) = 0 rseq(0x555556375ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1766613917", 4096) = 28 getrandom("\xa6\x41\x61\x8a\x32\x79\x20\x01", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556375d00 brk(0x555556396d00) = 0x555556396d00 brk(0x555556397000) = 0x555556397000 mprotect(0x7f0943977000, 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 mkdir("./syzkaller.Pgffim", 0700) = 0 chmod("./syzkaller.Pgffim", 0777) = 0 chdir("./syzkaller.Pgffim") = 0 mkdir("./0", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 83.839851][ T26] audit: type=1400 audit(1691344876.454:83): avc: denied { write } for pid=5021 comm="strace-static-x" path="pipe:[29553]" dev="pipefs" ino=29553 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:sshd_t tclass=fifo_file permissive=1 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5025 ./strace-static-x86_64: Process 5025 attached [ 83.870171][ T26] audit: type=1400 audit(1691344876.484:84): avc: denied { execmem } for pid=5024 comm="syz-executor176" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 83.891256][ T26] audit: type=1400 audit(1691344876.484:85): avc: denied { read write } for pid=5024 comm="syz-executor176" name="loop0" dev="devtmpfs" ino=648 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [pid 5025] set_robust_list(0x555556375660, 24) = 0 [pid 5025] chdir("./0") = 0 [pid 5025] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5025] setpgid(0, 0) = 0 [pid 5025] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5025] write(3, "1000", 4) = 4 [pid 5025] close(3) = 0 [pid 5025] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5025] memfd_create("syzkaller", 0) = 3 [pid 5025] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5025] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5025] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5025] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 83.917223][ T26] audit: type=1400 audit(1691344876.484:86): avc: denied { open } for pid=5024 comm="syz-executor176" path="/dev/loop0" dev="devtmpfs" ino=648 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 83.943683][ T26] audit: type=1400 audit(1691344876.484:87): avc: denied { ioctl } for pid=5024 comm="syz-executor176" path="/dev/loop0" dev="devtmpfs" ino=648 ioctlcmd=0x4c01 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 83.963237][ T5025] memfd_create() without MFD_EXEC nor MFD_NOEXEC_SEAL, pid=5025 'syz-executor176' [pid 5025] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5025] close(3) = 0 [pid 5025] mkdir("./file0", 0777) = 0 [ 84.005847][ T5025] loop0: detected capacity change from 0 to 2048 [ 84.020018][ T26] audit: type=1400 audit(1691344876.634:88): avc: denied { mounton } for pid=5025 comm="syz-executor176" path="/root/syzkaller.Pgffim/0/file0" dev="sda1" ino=1930 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [pid 5025] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5025] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5025] chdir("./file0") = 0 [pid 5025] ioctl(4, LOOP_CLR_FD) = 0 [pid 5025] close(4) = 0 [ 84.061101][ T5027] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 84.067454][ T26] audit: type=1400 audit(1691344876.684:89): avc: denied { mount } for pid=5025 comm="syz-executor176" name="/" dev="loop0" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=filesystem permissive=1 [ 84.119507][ T26] audit: type=1400 audit(1691344876.734:90): avc: denied { write } for pid=5025 comm="syz-executor176" name="/" dev="loop0" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 84.142872][ T26] audit: type=1400 audit(1691344876.734:91): avc: denied { add_name } for pid=5025 comm="syz-executor176" name="file2" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [pid 5025] creat("./file2", 040) = 4 [ 84.148369][ T5025] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 84.168700][ T26] audit: type=1400 audit(1691344876.734:92): avc: denied { create } for pid=5025 comm="syz-executor176" name="file2" scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:unlabeled_t tclass=file permissive=1 [ 84.201293][ T5025] Remounting filesystem read-only [ 84.206887][ T5025] NILFS (loop0): error -5 truncating bmap (ino=16) [pid 5025] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5025] exit_group(0) = ? [pid 5025] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5025, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- umount2("./0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./0/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./0/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./0/binderfs") = 0 [ 84.217220][ T5025] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 84.228007][ T5025] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 84.239887][ T5025] NILFS (loop0): error -5 truncating bmap (ino=16) [ 84.263833][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 84.270979][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 84.282884][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 84.292276][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 84.301176][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./0/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./0/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./0/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./0/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./0/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./0/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./0") = 0 mkdir("./1", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 84.311215][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5028 ./strace-static-x86_64: Process 5028 attached [pid 5028] set_robust_list(0x555556375660, 24) = 0 [pid 5028] chdir("./1") = 0 [pid 5028] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5028] setpgid(0, 0) = 0 [pid 5028] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5028] write(3, "1000", 4) = 4 [pid 5028] close(3) = 0 [pid 5028] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5028] memfd_create("syzkaller", 0) = 3 [pid 5028] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5028] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5028] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5028] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5028] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5028] close(3) = 0 [pid 5028] mkdir("./file0", 0777) = 0 [pid 5028] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5028] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5028] chdir("./file0") = 0 [pid 5028] ioctl(4, LOOP_CLR_FD) = 0 [pid 5028] close(4) = 0 [ 84.404906][ T5028] loop0: detected capacity change from 0 to 2048 [ 84.428551][ T5029] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5028] creat("./file2", 040) = 4 [pid 5028] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5028] exit_group(0) = ? [pid 5028] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5028, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./1/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./1/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./1/binderfs") = 0 [ 84.447994][ T5028] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 84.459535][ T5028] Remounting filesystem read-only [ 84.466079][ T5028] NILFS (loop0): error -5 truncating bmap (ino=16) [ 84.475688][ T5028] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 84.486310][ T5028] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 84.496929][ T5028] NILFS (loop0): error -5 truncating bmap (ino=16) [ 84.515781][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 84.522867][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 84.530210][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 84.539198][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 84.548192][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./1/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./1/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./1/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./1/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./1/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./1/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./1") = 0 mkdir("./2", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5030 ./strace-static-x86_64: Process 5030 attached [pid 5030] set_robust_list(0x555556375660, 24) = 0 [pid 5030] chdir("./2") = 0 [pid 5030] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5030] setpgid(0, 0) = 0 [pid 5030] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5030] write(3, "1000", 4) = 4 [pid 5030] close(3) = 0 [pid 5030] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5030] memfd_create("syzkaller", 0) = 3 [pid 5030] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 84.557430][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5030] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5030] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5030] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5030] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5030] close(3) = 0 [pid 5030] mkdir("./file0", 0777) = 0 [pid 5030] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5030] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5030] chdir("./file0") = 0 [pid 5030] ioctl(4, LOOP_CLR_FD) = 0 [pid 5030] close(4) = 0 [ 84.627740][ T5030] loop0: detected capacity change from 0 to 2048 [ 84.645776][ T5031] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 84.657274][ T5030] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 84.670095][ T5030] Remounting filesystem read-only [pid 5030] creat("./file2", 040) = 4 [pid 5030] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5030] exit_group(0) = ? [pid 5030] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5030, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./2/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./2/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./2/binderfs") = 0 [ 84.676666][ T5030] NILFS (loop0): error -5 truncating bmap (ino=16) [ 84.684812][ T5030] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 84.696556][ T5030] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 84.706414][ T5030] NILFS (loop0): error -5 truncating bmap (ino=16) [ 84.727063][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 84.734203][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 84.742077][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 84.750963][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 84.762222][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./2/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./2/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./2/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./2/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./2/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./2/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./2") = 0 mkdir("./3", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5032 ./strace-static-x86_64: Process 5032 attached [ 84.772336][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5032] set_robust_list(0x555556375660, 24) = 0 [pid 5032] chdir("./3") = 0 [pid 5032] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5032] setpgid(0, 0) = 0 [pid 5032] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5032] write(3, "1000", 4) = 4 [pid 5032] close(3) = 0 [pid 5032] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5032] memfd_create("syzkaller", 0) = 3 [pid 5032] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5032] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5032] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5032] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5032] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5032] close(3) = 0 [pid 5032] mkdir("./file0", 0777) = 0 [pid 5032] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5032] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5032] chdir("./file0") = 0 [pid 5032] ioctl(4, LOOP_CLR_FD) = 0 [pid 5032] close(4) = 0 [ 84.856687][ T5032] loop0: detected capacity change from 0 to 2048 [ 84.873332][ T5033] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5032] creat("./file2", 040) = 4 [pid 5032] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5032] exit_group(0) = ? [pid 5032] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5032, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./3", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./3", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./3/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./3/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./3/binderfs") = 0 [ 84.904175][ T5032] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 84.915457][ T5032] Remounting filesystem read-only [ 84.920590][ T5032] NILFS (loop0): error -5 truncating bmap (ino=16) [ 84.928871][ T5032] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 84.938902][ T5032] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 84.948579][ T5032] NILFS (loop0): error -5 truncating bmap (ino=16) [ 84.964361][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 84.971359][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 84.979097][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 84.988300][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 84.997598][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./3/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./3/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./3/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./3/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./3/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./3/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./3") = 0 mkdir("./4", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5034 ./strace-static-x86_64: Process 5034 attached [ 85.007454][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5034] set_robust_list(0x555556375660, 24) = 0 [pid 5034] chdir("./4") = 0 [pid 5034] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5034] setpgid(0, 0) = 0 [pid 5034] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5034] write(3, "1000", 4) = 4 [pid 5034] close(3) = 0 [pid 5034] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5034] memfd_create("syzkaller", 0) = 3 [pid 5034] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5034] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5034] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5034] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5034] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5034] close(3) = 0 [pid 5034] mkdir("./file0", 0777) = 0 [pid 5034] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5034] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5034] chdir("./file0") = 0 [pid 5034] ioctl(4, LOOP_CLR_FD) = 0 [pid 5034] close(4) = 0 [ 85.094273][ T5034] loop0: detected capacity change from 0 to 2048 [ 85.110703][ T5035] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 85.125342][ T5034] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 85.136067][ T5034] Remounting filesystem read-only [pid 5034] creat("./file2", 040) = 4 [pid 5034] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5034] exit_group(0) = ? [pid 5034] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5034, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./4", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./4", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./4/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./4/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./4/binderfs") = 0 [ 85.141943][ T5034] NILFS (loop0): error -5 truncating bmap (ino=16) [ 85.157229][ T5034] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 85.170888][ T5034] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 85.180439][ T5034] NILFS (loop0): error -5 truncating bmap (ino=16) [ 85.196265][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 85.203395][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 85.210707][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 85.220459][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 85.229501][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./4/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./4/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./4/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./4/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./4/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./4/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./4") = 0 mkdir("./5", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5036 ./strace-static-x86_64: Process 5036 attached [pid 5036] set_robust_list(0x555556375660, 24) = 0 [pid 5036] chdir("./5") = 0 [pid 5036] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5036] setpgid(0, 0) = 0 [pid 5036] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5036] write(3, "1000", 4) = 4 [pid 5036] close(3) = 0 [pid 5036] symlink("/dev/binderfs", "./binderfs") = 0 [ 85.238723][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5036] memfd_create("syzkaller", 0) = 3 [pid 5036] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5036] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5036] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5036] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5036] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5036] close(3) = 0 [pid 5036] mkdir("./file0", 0777) = 0 [pid 5036] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5036] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5036] chdir("./file0") = 0 [pid 5036] ioctl(4, LOOP_CLR_FD) = 0 [pid 5036] close(4) = 0 [ 85.314276][ T5036] loop0: detected capacity change from 0 to 2048 [ 85.336713][ T5037] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5036] creat("./file2", 040) = 4 [ 85.365255][ T5036] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 85.376302][ T5036] Remounting filesystem read-only [ 85.382085][ T5036] NILFS (loop0): error -5 truncating bmap (ino=16) [ 85.390867][ T5036] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 85.403385][ T5036] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5036] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5036] exit_group(0) = ? [pid 5036] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5036, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./5", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./5", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./5/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./5/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./5/binderfs") = 0 [ 85.413956][ T5036] NILFS (loop0): error -5 truncating bmap (ino=16) [ 85.438955][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 85.446055][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 85.453450][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 85.462425][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 85.471344][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./5/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./5/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./5/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./5/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./5/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./5/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./5") = 0 mkdir("./6", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5038 ./strace-static-x86_64: Process 5038 attached [pid 5038] set_robust_list(0x555556375660, 24) = 0 [pid 5038] chdir("./6") = 0 [pid 5038] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5038] setpgid(0, 0) = 0 [pid 5038] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5038] write(3, "1000", 4) = 4 [pid 5038] close(3) = 0 [pid 5038] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5038] memfd_create("syzkaller", 0) = 3 [pid 5038] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 85.481145][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5038] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5038] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5038] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5038] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5038] close(3) = 0 [pid 5038] mkdir("./file0", 0777) = 0 [pid 5038] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5038] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5038] chdir("./file0") = 0 [pid 5038] ioctl(4, LOOP_CLR_FD) = 0 [pid 5038] close(4) = 0 [ 85.549745][ T5038] loop0: detected capacity change from 0 to 2048 [ 85.565628][ T5039] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5038] creat("./file2", 040) = 4 [ 85.595085][ T5038] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 85.609837][ T5038] Remounting filesystem read-only [ 85.615136][ T5038] NILFS (loop0): error -5 truncating bmap (ino=16) [ 85.623743][ T5038] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 85.634500][ T5038] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5038] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5038] exit_group(0) = ? [pid 5038] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5038, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- umount2("./6", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./6", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./6/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./6/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./6/binderfs") = 0 [ 85.643727][ T5038] NILFS (loop0): error -5 truncating bmap (ino=16) [ 85.664251][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 85.671400][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 85.678849][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 85.689209][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./6/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./6/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./6/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./6/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./6/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./6/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./6") = 0 mkdir("./7", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5040 ./strace-static-x86_64: Process 5040 attached [pid 5040] set_robust_list(0x555556375660, 24) = 0 [pid 5040] chdir("./7") = 0 [ 85.700926][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 85.710467][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5040] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5040] setpgid(0, 0) = 0 [pid 5040] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5040] write(3, "1000", 4) = 4 [pid 5040] close(3) = 0 [pid 5040] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5040] memfd_create("syzkaller", 0) = 3 [pid 5040] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5040] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5040] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5040] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5040] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5040] close(3) = 0 [pid 5040] mkdir("./file0", 0777) = 0 [pid 5040] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5040] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5040] chdir("./file0") = 0 [pid 5040] ioctl(4, LOOP_CLR_FD) = 0 [pid 5040] close(4) = 0 [ 85.799507][ T5040] loop0: detected capacity change from 0 to 2048 [ 85.818551][ T5041] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 85.833860][ T5040] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5040] creat("./file2", 040) = 4 [pid 5040] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5040] exit_group(0) = ? [pid 5040] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5040, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./7", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./7", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./7/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./7/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./7/binderfs") = 0 [ 85.846115][ T5040] Remounting filesystem read-only [ 85.853596][ T5040] NILFS (loop0): error -5 truncating bmap (ino=16) [ 85.863439][ T5040] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 85.873913][ T5040] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 85.883731][ T5040] NILFS (loop0): error -5 truncating bmap (ino=16) [ 85.902508][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 85.910311][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 85.918394][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 85.928079][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 85.937381][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./7/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./7/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./7/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./7/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./7/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./7/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./7") = 0 mkdir("./8", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5042 ./strace-static-x86_64: Process 5042 attached [pid 5042] set_robust_list(0x555556375660, 24) = 0 [pid 5042] chdir("./8") = 0 [ 85.947548][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5042] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5042] setpgid(0, 0) = 0 [pid 5042] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5042] write(3, "1000", 4) = 4 [pid 5042] close(3) = 0 [pid 5042] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5042] memfd_create("syzkaller", 0) = 3 [pid 5042] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5042] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5042] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5042] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5042] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5042] close(3) = 0 [pid 5042] mkdir("./file0", 0777) = 0 [pid 5042] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5042] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5042] chdir("./file0") = 0 [pid 5042] ioctl(4, LOOP_CLR_FD) = 0 [pid 5042] close(4) = 0 [ 86.030421][ T5042] loop0: detected capacity change from 0 to 2048 [ 86.047728][ T5043] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 86.059935][ T5042] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 86.070050][ T5042] Remounting filesystem read-only [pid 5042] creat("./file2", 040) = 4 [pid 5042] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5042] exit_group(0) = ? [pid 5042] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5042, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./8", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./8", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./8/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./8/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./8/binderfs") = 0 [ 86.081224][ T5042] NILFS (loop0): error -5 truncating bmap (ino=16) [ 86.096261][ T5042] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 86.106490][ T5042] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 86.115834][ T5042] NILFS (loop0): error -5 truncating bmap (ino=16) [ 86.131030][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 86.138424][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 86.145788][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 86.154828][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 86.164681][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./8/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./8/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./8/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./8/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./8/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./8/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./8") = 0 mkdir("./9", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5044 ./strace-static-x86_64: Process 5044 attached [pid 5044] set_robust_list(0x555556375660, 24) = 0 [pid 5044] chdir("./9") = 0 [pid 5044] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5044] setpgid(0, 0) = 0 [pid 5044] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5044] write(3, "1000", 4) = 4 [pid 5044] close(3) = 0 [pid 5044] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5044] memfd_create("syzkaller", 0) = 3 [pid 5044] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 86.173924][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5044] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5044] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5044] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5044] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5044] close(3) = 0 [pid 5044] mkdir("./file0", 0777) = 0 [pid 5044] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5044] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5044] chdir("./file0") = 0 [pid 5044] ioctl(4, LOOP_CLR_FD) = 0 [pid 5044] close(4) = 0 [ 86.236758][ T5044] loop0: detected capacity change from 0 to 2048 [ 86.254740][ T5045] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 86.262176][ T5044] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 86.278187][ T5044] Remounting filesystem read-only [pid 5044] creat("./file2", 040) = 4 [pid 5044] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5044] exit_group(0) = ? [pid 5044] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5044, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./9", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./9", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./9/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./9/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./9/binderfs") = 0 [ 86.284393][ T5044] NILFS (loop0): error -5 truncating bmap (ino=16) [ 86.292537][ T5044] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 86.303628][ T5044] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 86.313262][ T5044] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./9/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./9/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./9/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./9/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./9/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./9/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./9") = 0 mkdir("./10", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 [ 86.334656][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 86.341755][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 86.349084][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 86.358137][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 86.367342][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 86.376592][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5046 attached [pid 5046] set_robust_list(0x555556375660, 24) = 0 [pid 5046] chdir("./10") = 0 [pid 5046] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5046] setpgid(0, 0) = 0 [pid 5046] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5046] write(3, "1000", 4) = 4 [pid 5046] close(3) = 0 [pid 5046] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5024] <... clone resumed>, child_tidptr=0x555556375650) = 5046 [pid 5046] memfd_create("syzkaller", 0) = 3 [pid 5046] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5046] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5046] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5046] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5046] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5046] close(3) = 0 [pid 5046] mkdir("./file0", 0777) = 0 [pid 5046] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5046] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5046] chdir("./file0") = 0 [pid 5046] ioctl(4, LOOP_CLR_FD) = 0 [pid 5046] close(4) = 0 [ 86.444081][ T5046] loop0: detected capacity change from 0 to 2048 [ 86.463206][ T5047] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 86.483567][ T5046] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5046] creat("./file2", 040) = 4 [pid 5046] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5046] exit_group(0) = ? [pid 5046] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5046, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./10", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./10", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./10/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./10/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./10/binderfs") = 0 [ 86.493827][ T5046] Remounting filesystem read-only [ 86.500127][ T5046] NILFS (loop0): error -5 truncating bmap (ino=16) [ 86.508768][ T5046] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 86.518982][ T5046] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 86.528676][ T5046] NILFS (loop0): error -5 truncating bmap (ino=16) [ 86.551711][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 86.559842][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 86.567539][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 86.577096][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 86.586682][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./10/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./10/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./10/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./10/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./10/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./10/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./10") = 0 mkdir("./11", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5048 ./strace-static-x86_64: Process 5048 attached [pid 5048] set_robust_list(0x555556375660, 24) = 0 [ 86.596407][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5048] chdir("./11") = 0 [pid 5048] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5048] setpgid(0, 0) = 0 [pid 5048] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5048] write(3, "1000", 4) = 4 [pid 5048] close(3) = 0 [pid 5048] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5048] memfd_create("syzkaller", 0) = 3 [pid 5048] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5048] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5048] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5048] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5048] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5048] close(3) = 0 [pid 5048] mkdir("./file0", 0777) = 0 [pid 5048] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5048] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5048] chdir("./file0") = 0 [pid 5048] ioctl(4, LOOP_CLR_FD) = 0 [pid 5048] close(4) = 0 [ 86.674804][ T5048] loop0: detected capacity change from 0 to 2048 [ 86.691017][ T5049] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5048] creat("./file2", 040) = 4 [pid 5048] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5048] exit_group(0) = ? [pid 5048] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5048, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./11", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./11", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./11/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./11/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./11/binderfs") = 0 [ 86.716984][ T5048] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 86.727499][ T5048] Remounting filesystem read-only [ 86.733339][ T5048] NILFS (loop0): error -5 truncating bmap (ino=16) [ 86.741347][ T5048] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 86.752315][ T5048] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 86.762617][ T5048] NILFS (loop0): error -5 truncating bmap (ino=16) [ 86.779580][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 86.786691][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 86.795360][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 86.804291][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 86.813374][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./11/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./11/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./11/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./11/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./11/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./11/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./11") = 0 mkdir("./12", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5050 ./strace-static-x86_64: Process 5050 attached [pid 5050] set_robust_list(0x555556375660, 24) = 0 [pid 5050] chdir("./12") = 0 [pid 5050] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5050] setpgid(0, 0) = 0 [pid 5050] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5050] write(3, "1000", 4) = 4 [pid 5050] close(3) = 0 [pid 5050] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5050] memfd_create("syzkaller", 0) = 3 [pid 5050] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 86.822518][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5050] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5050] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5050] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5050] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5050] close(3) = 0 [pid 5050] mkdir("./file0", 0777) = 0 [pid 5050] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5050] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5050] chdir("./file0") = 0 [pid 5050] ioctl(4, LOOP_CLR_FD) = 0 [pid 5050] close(4) = 0 [ 86.904848][ T5050] loop0: detected capacity change from 0 to 2048 [ 86.932161][ T5051] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5050] creat("./file2", 040) = 4 [ 86.965387][ T5050] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 86.985348][ T5050] Remounting filesystem read-only [ 86.998493][ T5050] NILFS (loop0): error -5 truncating bmap (ino=16) [pid 5050] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5050] exit_group(0) = ? [pid 5050] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5050, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./12", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./12", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./12/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./12/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./12/binderfs") = 0 [ 87.013351][ T5050] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 87.025006][ T5050] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 87.034696][ T5050] NILFS (loop0): error -5 truncating bmap (ino=16) [ 87.058452][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./12/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./12/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./12/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./12/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./12/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [ 87.065884][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 87.073320][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 87.082512][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 87.091404][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 87.101069][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./12/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./12") = 0 mkdir("./13", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5052 ./strace-static-x86_64: Process 5052 attached [pid 5052] set_robust_list(0x555556375660, 24) = 0 [pid 5052] chdir("./13") = 0 [pid 5052] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5052] setpgid(0, 0) = 0 [pid 5052] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5052] write(3, "1000", 4) = 4 [pid 5052] close(3) = 0 [pid 5052] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5052] memfd_create("syzkaller", 0) = 3 [pid 5052] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5052] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5052] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5052] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5052] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5052] close(3) = 0 [pid 5052] mkdir("./file0", 0777) = 0 [pid 5052] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5052] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5052] chdir("./file0") = 0 [pid 5052] ioctl(4, LOOP_CLR_FD) = 0 [pid 5052] close(4) = 0 [ 87.227902][ T5052] loop0: detected capacity change from 0 to 2048 [ 87.262603][ T5053] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5052] creat("./file2", 040) = 4 [ 87.282981][ T5052] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 87.302235][ T5052] Remounting filesystem read-only [ 87.307410][ T5052] NILFS (loop0): error -5 truncating bmap (ino=16) [pid 5052] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5052] exit_group(0) = ? [pid 5052] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5052, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./13", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./13", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./13/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./13/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./13/binderfs") = 0 [ 87.333390][ T5052] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 87.351761][ T5052] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 87.362435][ T5052] NILFS (loop0): error -5 truncating bmap (ino=16) [ 87.385874][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 87.393212][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 87.400562][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 87.411683][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 87.420601][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./13/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./13/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./13/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./13/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./13/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [ 87.430528][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./13/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./13") = 0 mkdir("./14", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5054 ./strace-static-x86_64: Process 5054 attached [pid 5054] set_robust_list(0x555556375660, 24) = 0 [pid 5054] chdir("./14") = 0 [pid 5054] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5054] setpgid(0, 0) = 0 [pid 5054] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5054] write(3, "1000", 4) = 4 [pid 5054] close(3) = 0 [pid 5054] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5054] memfd_create("syzkaller", 0) = 3 [pid 5054] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5054] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5054] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5054] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5054] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5054] close(3) = 0 [pid 5054] mkdir("./file0", 0777) = 0 [pid 5054] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5054] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5054] chdir("./file0") = 0 [pid 5054] ioctl(4, LOOP_CLR_FD) = 0 [pid 5054] close(4) = 0 [ 87.550456][ T5054] loop0: detected capacity change from 0 to 2048 [ 87.567756][ T5055] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 87.584009][ T5054] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5054] creat("./file2", 040) = 4 [pid 5054] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5054] exit_group(0) = ? [pid 5054] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5054, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./14", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./14", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./14/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./14/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./14/binderfs") = 0 [ 87.603289][ T5054] Remounting filesystem read-only [ 87.608516][ T5054] NILFS (loop0): error -5 truncating bmap (ino=16) [ 87.618906][ T5054] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 87.628956][ T5054] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 87.638281][ T5054] NILFS (loop0): error -5 truncating bmap (ino=16) [ 87.657459][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 87.664647][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 87.672199][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 87.681272][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 87.690508][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./14/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./14/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./14/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./14/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./14/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./14/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./14") = 0 mkdir("./15", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5056 ./strace-static-x86_64: Process 5056 attached [pid 5056] set_robust_list(0x555556375660, 24) = 0 [pid 5056] chdir("./15") = 0 [pid 5056] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5056] setpgid(0, 0) = 0 [pid 5056] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5056] write(3, "1000", 4) = 4 [pid 5056] close(3) = 0 [pid 5056] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5056] memfd_create("syzkaller", 0) = 3 [pid 5056] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 87.700948][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5056] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5056] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5056] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5056] close(3) = 0 [pid 5056] mkdir("./file0", 0777) = 0 [pid 5056] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5056] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5056] chdir("./file0") = 0 [pid 5056] ioctl(4, LOOP_CLR_FD) = 0 [pid 5056] close(4) = 0 [ 87.767176][ T5056] loop0: detected capacity change from 0 to 2048 [ 87.786024][ T5057] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 87.801263][ T5056] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5056] creat("./file2", 040) = 4 [pid 5056] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5056] exit_group(0) = ? [pid 5056] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5056, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./15", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./15", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./15/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./15/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./15/binderfs") = 0 [ 87.812835][ T5056] Remounting filesystem read-only [ 87.818776][ T5056] NILFS (loop0): error -5 truncating bmap (ino=16) [ 87.827305][ T5056] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 87.838521][ T5056] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 87.847838][ T5056] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./15/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./15/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./15/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./15/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./15/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./15/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./15") = 0 mkdir("./16", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5058 ./strace-static-x86_64: Process 5058 attached [pid 5058] set_robust_list(0x555556375660, 24) = 0 [pid 5058] chdir("./16") = 0 [pid 5058] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5058] setpgid(0, 0) = 0 [pid 5058] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5058] write(3, "1000", 4) = 4 [pid 5058] close(3) = 0 [pid 5058] symlink("/dev/binderfs", "./binderfs") = 0 [ 87.864713][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 87.871788][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 87.879085][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 87.887999][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 87.897081][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 87.906305][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5058] memfd_create("syzkaller", 0) = 3 [pid 5058] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5058] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5058] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5058] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5058] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5058] close(3) = 0 [pid 5058] mkdir("./file0", 0777) = 0 [pid 5058] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5058] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5058] chdir("./file0") = 0 [pid 5058] ioctl(4, LOOP_CLR_FD) = 0 [pid 5058] close(4) = 0 [ 87.969536][ T5058] loop0: detected capacity change from 0 to 2048 [ 87.986189][ T5059] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5058] creat("./file2", 040) = 4 [pid 5058] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5058] exit_group(0) = ? [pid 5058] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5058, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./16", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./16", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./16/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./16/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./16/binderfs") = 0 [ 88.016670][ T5058] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 88.027537][ T5058] Remounting filesystem read-only [ 88.033202][ T5058] NILFS (loop0): error -5 truncating bmap (ino=16) [ 88.042460][ T5058] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 88.052961][ T5058] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 88.062736][ T5058] NILFS (loop0): error -5 truncating bmap (ino=16) [ 88.078236][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 88.085442][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 88.093020][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 88.102595][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 88.111619][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./16/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./16/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./16/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./16/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./16/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./16/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./16") = 0 mkdir("./17", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5060 ./strace-static-x86_64: Process 5060 attached [pid 5060] set_robust_list(0x555556375660, 24) = 0 [pid 5060] chdir("./17") = 0 [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) = 3 [pid 5060] write(3, "1000", 4) = 4 [pid 5060] close(3) = 0 [pid 5060] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5060] memfd_create("syzkaller", 0) = 3 [pid 5060] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 88.120718][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [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"..., 1048576) = 1048576 [pid 5060] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5060] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5060] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5060] close(3) = 0 [pid 5060] mkdir("./file0", 0777) = 0 [pid 5060] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5060] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5060] chdir("./file0") = 0 [pid 5060] ioctl(4, LOOP_CLR_FD) = 0 [pid 5060] close(4) = 0 [ 88.188798][ T5060] loop0: detected capacity change from 0 to 2048 [ 88.205081][ T5061] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5060] creat("./file2", 040) = 4 [pid 5060] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5060] exit_group(0) = ? [pid 5060] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5060, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./17", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./17", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./17/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./17/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./17/binderfs") = 0 [ 88.236024][ T5060] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 88.246397][ T5060] Remounting filesystem read-only [ 88.252396][ T5060] NILFS (loop0): error -5 truncating bmap (ino=16) [ 88.260347][ T5060] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 88.270668][ T5060] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 88.280235][ T5060] NILFS (loop0): error -5 truncating bmap (ino=16) [ 88.303223][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 88.310378][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 88.317938][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 88.327092][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 88.336288][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./17/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./17/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./17/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./17/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./17/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./17/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./17") = 0 mkdir("./18", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5062 ./strace-static-x86_64: Process 5062 attached [pid 5062] set_robust_list(0x555556375660, 24) = 0 [pid 5062] chdir("./18") = 0 [ 88.345476][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5062] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5062] setpgid(0, 0) = 0 [pid 5062] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5062] write(3, "1000", 4) = 4 [pid 5062] close(3) = 0 [pid 5062] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5062] memfd_create("syzkaller", 0) = 3 [pid 5062] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [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"..., 1048576) = 1048576 [pid 5062] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5062] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5062] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5062] close(3) = 0 [pid 5062] mkdir("./file0", 0777) = 0 [pid 5062] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5062] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5062] chdir("./file0") = 0 [pid 5062] ioctl(4, LOOP_CLR_FD) = 0 [pid 5062] close(4) = 0 [ 88.434317][ T5062] loop0: detected capacity change from 0 to 2048 [ 88.450948][ T5063] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 88.473553][ T5062] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5062] creat("./file2", 040) = 4 [pid 5062] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5062] exit_group(0) = ? [pid 5062] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5062, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./18", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./18", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./18/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./18/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./18/binderfs") = 0 [ 88.483791][ T5062] Remounting filesystem read-only [ 88.492180][ T5062] NILFS (loop0): error -5 truncating bmap (ino=16) [ 88.502754][ T5062] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 88.517873][ T5062] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 88.527435][ T5062] NILFS (loop0): error -5 truncating bmap (ino=16) [ 88.548536][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 88.555654][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 88.563063][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 88.572239][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 88.581184][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./18/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./18/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./18/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./18/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./18/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./18/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./18") = 0 mkdir("./19", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5064 ./strace-static-x86_64: Process 5064 attached [pid 5064] set_robust_list(0x555556375660, 24) = 0 [pid 5064] chdir("./19") = 0 [pid 5064] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5064] setpgid(0, 0) = 0 [pid 5064] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5064] write(3, "1000", 4) = 4 [pid 5064] close(3) = 0 [pid 5064] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5064] memfd_create("syzkaller", 0) = 3 [pid 5064] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 88.590489][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [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"..., 1048576) = 1048576 [pid 5064] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5064] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5064] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5064] close(3) = 0 [pid 5064] mkdir("./file0", 0777) = 0 [pid 5064] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5064] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5064] chdir("./file0") = 0 [pid 5064] ioctl(4, LOOP_CLR_FD) = 0 [pid 5064] close(4) = 0 [ 88.657549][ T5064] loop0: detected capacity change from 0 to 2048 [ 88.674417][ T5065] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 88.689700][ T5064] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 88.700150][ T5064] Remounting filesystem read-only [pid 5064] creat("./file2", 040) = 4 [pid 5064] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5064] exit_group(0) = ? [pid 5064] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5064, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./19", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./19", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./19/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./19/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./19/binderfs") = 0 [ 88.719258][ T5064] NILFS (loop0): error -5 truncating bmap (ino=16) [ 88.727827][ T5064] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 88.738067][ T5064] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 88.747684][ T5064] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./19/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./19/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./19/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./19/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./19/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [ 88.768688][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 88.775742][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 88.783109][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 88.792059][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 88.800936][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 88.810607][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./19/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./19") = 0 mkdir("./20", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5066 ./strace-static-x86_64: Process 5066 attached [pid 5066] set_robust_list(0x555556375660, 24) = 0 [pid 5066] chdir("./20") = 0 [pid 5066] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5066] setpgid(0, 0) = 0 [pid 5066] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5066] write(3, "1000", 4) = 4 [pid 5066] close(3) = 0 [pid 5066] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5066] memfd_create("syzkaller", 0) = 3 [pid 5066] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [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"..., 1048576) = 1048576 [pid 5066] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5066] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5066] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5066] close(3) = 0 [pid 5066] mkdir("./file0", 0777) = 0 [pid 5066] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5066] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5066] chdir("./file0") = 0 [pid 5066] ioctl(4, LOOP_CLR_FD) = 0 [pid 5066] close(4) = 0 [ 88.915480][ T5066] loop0: detected capacity change from 0 to 2048 [ 88.934045][ T5067] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 88.950307][ T5066] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5066] creat("./file2", 040) = 4 [pid 5066] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5066] exit_group(0) = ? [pid 5066] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5066, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./20", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./20", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./20/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./20/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./20/binderfs") = 0 [ 88.961692][ T5066] Remounting filesystem read-only [ 88.971593][ T5066] NILFS (loop0): error -5 truncating bmap (ino=16) [ 88.979242][ T5066] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 88.989484][ T5066] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 88.999463][ T5066] NILFS (loop0): error -5 truncating bmap (ino=16) [ 89.018777][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 89.025834][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 89.033542][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 89.042491][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 89.051392][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./20/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./20/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./20/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./20/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./20/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./20/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./20") = 0 mkdir("./21", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5068 ./strace-static-x86_64: Process 5068 attached [pid 5068] set_robust_list(0x555556375660, 24) = 0 [pid 5068] chdir("./21") = 0 [pid 5068] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5068] setpgid(0, 0) = 0 [pid 5068] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5068] write(3, "1000", 4) = 4 [pid 5068] close(3) = 0 [pid 5068] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5068] memfd_create("syzkaller", 0) = 3 [pid 5068] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 89.060600][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5068] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5068] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5068] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5068] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5068] close(3) = 0 [pid 5068] mkdir("./file0", 0777) = 0 [pid 5068] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5068] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5068] chdir("./file0") = 0 [pid 5068] ioctl(4, LOOP_CLR_FD) = 0 [pid 5068] close(4) = 0 [ 89.125707][ T5068] loop0: detected capacity change from 0 to 2048 [ 89.141803][ T5069] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 89.166977][ T5068] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5068] creat("./file2", 040) = 4 [pid 5068] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5068] exit_group(0) = ? [pid 5068] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5068, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./21", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./21", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./21/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./21/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./21/binderfs") = 0 [ 89.184746][ T5068] Remounting filesystem read-only [ 89.190257][ T5068] NILFS (loop0): error -5 truncating bmap (ino=16) [ 89.199313][ T5068] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 89.210208][ T5068] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 89.219753][ T5068] NILFS (loop0): error -5 truncating bmap (ino=16) [ 89.236498][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 89.243584][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 89.250891][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 89.260241][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 89.270121][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./21/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./21/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./21/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./21/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./21/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./21/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./21") = 0 mkdir("./22", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5070 ./strace-static-x86_64: Process 5070 attached [pid 5070] set_robust_list(0x555556375660, 24) = 0 [pid 5070] chdir("./22") = 0 [pid 5070] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5070] setpgid(0, 0) = 0 [pid 5070] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5070] write(3, "1000", 4) = 4 [pid 5070] close(3) = 0 [pid 5070] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5070] memfd_create("syzkaller", 0) = 3 [pid 5070] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 89.279825][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5070] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5070] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5070] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5070] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5070] close(3) = 0 [pid 5070] mkdir("./file0", 0777) = 0 [pid 5070] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5070] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5070] chdir("./file0") = 0 [pid 5070] ioctl(4, LOOP_CLR_FD) = 0 [pid 5070] close(4) = 0 [ 89.339584][ T5070] loop0: detected capacity change from 0 to 2048 [ 89.356879][ T5071] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 89.368356][ T5070] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 89.379125][ T5070] Remounting filesystem read-only [pid 5070] creat("./file2", 040) = 4 [pid 5070] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5070] exit_group(0) = ? [pid 5070] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5070, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- umount2("./22", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./22", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./22/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./22/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./22/binderfs") = 0 [ 89.384956][ T5070] NILFS (loop0): error -5 truncating bmap (ino=16) [ 89.394349][ T5070] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 89.404864][ T5070] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 89.414799][ T5070] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./22/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./22/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./22/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./22/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./22/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./22/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./22") = 0 mkdir("./23", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5072 ./strace-static-x86_64: Process 5072 attached [pid 5072] set_robust_list(0x555556375660, 24) = 0 [pid 5072] chdir("./23") = 0 [pid 5072] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5072] setpgid(0, 0) = 0 [pid 5072] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5072] write(3, "1000", 4) = 4 [pid 5072] close(3) = 0 [ 89.435527][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 89.442748][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 89.450048][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 89.459385][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 89.468682][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 89.478051][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5072] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5072] memfd_create("syzkaller", 0) = 3 [pid 5072] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5072] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5072] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5072] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5072] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5072] close(3) = 0 [pid 5072] mkdir("./file0", 0777) = 0 [pid 5072] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5072] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5072] chdir("./file0") = 0 [pid 5072] ioctl(4, LOOP_CLR_FD) = 0 [pid 5072] close(4) = 0 [ 89.547433][ T5072] loop0: detected capacity change from 0 to 2048 [ 89.564492][ T5073] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 89.570951][ T5072] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 89.586151][ T5072] Remounting filesystem read-only [pid 5072] creat("./file2", 040) = 4 [pid 5072] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5072] exit_group(0) = ? [pid 5072] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5072, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./23", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./23", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./23/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./23/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./23/binderfs") = 0 [ 89.592186][ T5072] NILFS (loop0): error -5 truncating bmap (ino=16) [ 89.600429][ T5072] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 89.611313][ T5072] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 89.621411][ T5072] NILFS (loop0): error -5 truncating bmap (ino=16) [ 89.637818][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./23/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./23/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./23/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./23/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./23/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./23/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./23") = 0 mkdir("./24", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5074 ./strace-static-x86_64: Process 5074 attached [pid 5074] set_robust_list(0x555556375660, 24) = 0 [pid 5074] chdir("./24") = 0 [pid 5074] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5074] setpgid(0, 0) = 0 [pid 5074] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5074] write(3, "1000", 4) = 4 [pid 5074] close(3) = 0 [pid 5074] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5074] memfd_create("syzkaller", 0) = 3 [pid 5074] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 89.644884][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 89.652281][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 89.661166][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 89.670087][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 89.679239][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5074] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5074] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5074] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5074] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5074] close(3) = 0 [pid 5074] mkdir("./file0", 0777) = 0 [pid 5074] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5074] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5074] chdir("./file0") = 0 [pid 5074] ioctl(4, LOOP_CLR_FD) = 0 [pid 5074] close(4) = 0 [ 89.755283][ T5074] loop0: detected capacity change from 0 to 2048 [ 89.770883][ T5075] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 89.787066][ T5074] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 89.797553][ T5074] Remounting filesystem read-only [pid 5074] creat("./file2", 040) = 4 [pid 5074] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5074] exit_group(0) = ? [pid 5074] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5074, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./24", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./24", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./24/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./24/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./24/binderfs") = 0 [ 89.804118][ T5074] NILFS (loop0): error -5 truncating bmap (ino=16) [ 89.812291][ T5074] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 89.824137][ T5074] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 89.833477][ T5074] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./24/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./24/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./24/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./24/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./24/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./24/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./24") = 0 mkdir("./25", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 89.851180][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 89.858261][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 89.865667][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 89.874663][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 89.883706][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 89.892912][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5076 ./strace-static-x86_64: Process 5076 attached [pid 5076] set_robust_list(0x555556375660, 24) = 0 [pid 5076] chdir("./25") = 0 [pid 5076] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [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) = 0x7f093b4c4000 [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"..., 1048576) = 1048576 [pid 5076] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5076] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5076] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5076] close(3) = 0 [pid 5076] mkdir("./file0", 0777) = 0 [pid 5076] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5076] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5076] chdir("./file0") = 0 [pid 5076] ioctl(4, LOOP_CLR_FD) = 0 [pid 5076] close(4) = 0 [ 89.966379][ T5076] loop0: detected capacity change from 0 to 2048 [ 89.993632][ T5077] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 90.006669][ T5076] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5076] creat("./file2", 040) = 4 [pid 5076] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5076] exit_group(0) = ? [pid 5076] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5076, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./25", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./25", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./25/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./25/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./25/binderfs") = 0 [ 90.017347][ T5076] Remounting filesystem read-only [ 90.022776][ T5076] NILFS (loop0): error -5 truncating bmap (ino=16) [ 90.032477][ T5076] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 90.042541][ T5076] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 90.052097][ T5076] NILFS (loop0): error -5 truncating bmap (ino=16) [ 90.066909][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 90.073988][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 90.081288][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 90.090664][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 90.099706][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./25/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./25/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./25/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./25/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./25/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./25/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./25") = 0 mkdir("./26", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5078 ./strace-static-x86_64: Process 5078 attached [pid 5078] set_robust_list(0x555556375660, 24) = 0 [pid 5078] chdir("./26") = 0 [pid 5078] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5078] setpgid(0, 0) = 0 [pid 5078] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5078] write(3, "1000", 4) = 4 [pid 5078] close(3) = 0 [pid 5078] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5078] memfd_create("syzkaller", 0) = 3 [pid 5078] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 90.109772][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [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"..., 1048576) = 1048576 [pid 5078] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5078] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5078] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5078] close(3) = 0 [pid 5078] mkdir("./file0", 0777) = 0 [pid 5078] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5078] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5078] chdir("./file0") = 0 [pid 5078] ioctl(4, LOOP_CLR_FD) = 0 [pid 5078] close(4) = 0 [ 90.171206][ T5078] loop0: detected capacity change from 0 to 2048 [ 90.187924][ T5079] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5078] creat("./file2", 040) = 4 [pid 5078] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5078] exit_group(0) = ? [pid 5078] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5078, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./26", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./26", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./26/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./26/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./26/binderfs") = 0 [ 90.213349][ T5078] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 90.226002][ T5078] Remounting filesystem read-only [ 90.233981][ T5078] NILFS (loop0): error -5 truncating bmap (ino=16) [ 90.242756][ T5078] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 90.252713][ T5078] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 90.262193][ T5078] NILFS (loop0): error -5 truncating bmap (ino=16) [ 90.277434][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 90.284572][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 90.292128][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 90.301285][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 90.310517][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./26/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./26/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./26/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./26/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./26/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./26/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./26") = 0 mkdir("./27", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5080 ./strace-static-x86_64: Process 5080 attached [pid 5080] set_robust_list(0x555556375660, 24) = 0 [pid 5080] chdir("./27") = 0 [pid 5080] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5080] setpgid(0, 0) = 0 [pid 5080] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5080] write(3, "1000", 4) = 4 [pid 5080] close(3) = 0 [pid 5080] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5080] memfd_create("syzkaller", 0) = 3 [pid 5080] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 90.319812][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5080] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5080] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5080] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5080] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5080] close(3) = 0 [pid 5080] mkdir("./file0", 0777) = 0 [pid 5080] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5080] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5080] chdir("./file0") = 0 [pid 5080] ioctl(4, LOOP_CLR_FD) = 0 [pid 5080] close(4) = 0 [ 90.383956][ T5080] loop0: detected capacity change from 0 to 2048 [ 90.399567][ T5081] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 90.413782][ T5080] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5080] creat("./file2", 040) = 4 [pid 5080] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5080] exit_group(0) = ? [pid 5080] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5080, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./27", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./27", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./27/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./27/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./27/binderfs") = 0 [ 90.431377][ T5080] Remounting filesystem read-only [ 90.438002][ T5080] NILFS (loop0): error -5 truncating bmap (ino=16) [ 90.445663][ T5080] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 90.456314][ T5080] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 90.466422][ T5080] NILFS (loop0): error -5 truncating bmap (ino=16) [ 90.483963][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 90.491121][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 90.500727][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 90.509930][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 90.518943][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./27/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./27/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./27/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./27/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./27/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./27/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./27") = 0 mkdir("./28", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5082 ./strace-static-x86_64: Process 5082 attached [pid 5082] set_robust_list(0x555556375660, 24) = 0 [pid 5082] chdir("./28") = 0 [pid 5082] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5082] setpgid(0, 0) = 0 [pid 5082] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5082] write(3, "1000", 4) = 4 [pid 5082] close(3) = 0 [ 90.528814][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5082] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5082] memfd_create("syzkaller", 0) = 3 [pid 5082] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5082] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5082] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5082] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5082] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5082] close(3) = 0 [pid 5082] mkdir("./file0", 0777) = 0 [pid 5082] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5082] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5082] chdir("./file0") = 0 [pid 5082] ioctl(4, LOOP_CLR_FD) = 0 [pid 5082] close(4) = 0 [ 90.599280][ T5082] loop0: detected capacity change from 0 to 2048 [ 90.616908][ T5083] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5082] creat("./file2", 040) = 4 [ 90.643930][ T5082] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 90.655236][ T5082] Remounting filesystem read-only [ 90.661027][ T5082] NILFS (loop0): error -5 truncating bmap (ino=16) [ 90.669649][ T5082] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 90.679863][ T5082] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 90.690515][ T5082] NILFS (loop0): error -5 truncating bmap (ino=16) [pid 5082] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5082] exit_group(0) = ? [pid 5082] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5082, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./28", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./28", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./28/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./28/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./28/binderfs") = 0 [ 90.709056][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 90.716302][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 90.725182][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 90.734153][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 90.743369][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./28/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./28/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./28/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./28/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./28/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./28/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./28") = 0 mkdir("./29", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5084 ./strace-static-x86_64: Process 5084 attached [pid 5084] set_robust_list(0x555556375660, 24) = 0 [pid 5084] chdir("./29") = 0 [pid 5084] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [ 90.752490][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5084] setpgid(0, 0) = 0 [pid 5084] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5084] write(3, "1000", 4) = 4 [pid 5084] close(3) = 0 [pid 5084] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5084] memfd_create("syzkaller", 0) = 3 [pid 5084] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5084] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5084] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5084] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5084] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5084] close(3) = 0 [pid 5084] mkdir("./file0", 0777) = 0 [pid 5084] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5084] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5084] chdir("./file0") = 0 [pid 5084] ioctl(4, LOOP_CLR_FD) = 0 [pid 5084] close(4) = 0 [ 90.834457][ T5084] loop0: detected capacity change from 0 to 2048 [ 90.851966][ T5085] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 90.867208][ T5084] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 90.877887][ T5084] Remounting filesystem read-only [pid 5084] creat("./file2", 040) = 4 [pid 5084] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5084] exit_group(0) = ? [pid 5084] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5084, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- umount2("./29", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./29", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./29/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./29/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./29/binderfs") = 0 [ 90.887550][ T5084] NILFS (loop0): error -5 truncating bmap (ino=16) [ 90.895545][ T5084] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 90.905970][ T5084] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 90.915249][ T5084] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./29/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./29/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./29/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./29/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./29/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./29/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./29") = 0 mkdir("./30", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5086 ./strace-static-x86_64: Process 5086 attached [pid 5086] set_robust_list(0x555556375660, 24) = 0 [pid 5086] chdir("./30") = 0 [ 90.931824][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 90.938901][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 90.946963][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 90.956029][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 90.964981][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 90.975622][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5086] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5086] setpgid(0, 0) = 0 [pid 5086] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5086] write(3, "1000", 4) = 4 [pid 5086] close(3) = 0 [pid 5086] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5086] memfd_create("syzkaller", 0) = 3 [pid 5086] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5086] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5086] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5086] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5086] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5086] close(3) = 0 [pid 5086] mkdir("./file0", 0777) = 0 [pid 5086] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5086] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5086] chdir("./file0") = 0 [pid 5086] ioctl(4, LOOP_CLR_FD) = 0 [pid 5086] close(4) = 0 [ 91.054383][ T5086] loop0: detected capacity change from 0 to 2048 [ 91.070401][ T5087] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 91.077123][ T5086] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 91.093251][ T5086] Remounting filesystem read-only [pid 5086] creat("./file2", 040) = 4 [pid 5086] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5086] exit_group(0) = ? [pid 5086] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5086, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./30", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./30", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./30/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./30/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./30/binderfs") = 0 [ 91.098860][ T5086] NILFS (loop0): error -5 truncating bmap (ino=16) [ 91.107428][ T5086] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 91.117895][ T5086] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 91.127430][ T5086] NILFS (loop0): error -5 truncating bmap (ino=16) [ 91.146032][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./30/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./30/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./30/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./30/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./30/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./30/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./30") = 0 mkdir("./31", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5088 [ 91.153332][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 91.164036][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 91.173074][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 91.182080][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 91.191565][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer ./strace-static-x86_64: Process 5088 attached [pid 5088] set_robust_list(0x555556375660, 24) = 0 [pid 5088] chdir("./31") = 0 [pid 5088] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5088] setpgid(0, 0) = 0 [pid 5088] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5088] write(3, "1000", 4) = 4 [pid 5088] close(3) = 0 [pid 5088] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5088] memfd_create("syzkaller", 0) = 3 [pid 5088] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [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"..., 1048576) = 1048576 [pid 5088] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5088] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5088] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5088] close(3) = 0 [pid 5088] mkdir("./file0", 0777) = 0 [pid 5088] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5088] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5088] chdir("./file0") = 0 [pid 5088] ioctl(4, LOOP_CLR_FD) = 0 [pid 5088] close(4) = 0 [ 91.264083][ T5088] loop0: detected capacity change from 0 to 2048 [ 91.283637][ T5089] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 91.304371][ T5088] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5088] creat("./file2", 040) = 4 [pid 5088] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5088] exit_group(0) = ? [pid 5088] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5088, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./31", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./31", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./31/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./31/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./31/binderfs") = 0 [ 91.314928][ T5088] Remounting filesystem read-only [ 91.320291][ T5088] NILFS (loop0): error -5 truncating bmap (ino=16) [ 91.329444][ T5088] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 91.339809][ T5088] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 91.349335][ T5088] NILFS (loop0): error -5 truncating bmap (ino=16) [ 91.372646][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 91.379632][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 91.387439][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 91.398006][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 91.407591][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./31/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./31/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./31/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./31/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./31/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./31/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./31") = 0 mkdir("./32", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5090 ./strace-static-x86_64: Process 5090 attached [pid 5090] set_robust_list(0x555556375660, 24) = 0 [pid 5090] chdir("./32") = 0 [ 91.417025][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5090] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5090] setpgid(0, 0) = 0 [pid 5090] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5090] write(3, "1000", 4) = 4 [pid 5090] close(3) = 0 [pid 5090] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5090] memfd_create("syzkaller", 0) = 3 [pid 5090] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [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"..., 1048576) = 1048576 [pid 5090] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5090] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5090] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5090] close(3) = 0 [pid 5090] mkdir("./file0", 0777) = 0 [pid 5090] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5090] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5090] chdir("./file0") = 0 [pid 5090] ioctl(4, LOOP_CLR_FD) = 0 [pid 5090] close(4) = 0 [ 91.505027][ T5090] loop0: detected capacity change from 0 to 2048 [ 91.522840][ T5091] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 91.544953][ T5090] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5090] creat("./file2", 040) = 4 [pid 5090] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5090] exit_group(0) = ? [pid 5090] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5090, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./32", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./32", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./32/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./32/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./32/binderfs") = 0 [ 91.556133][ T5090] Remounting filesystem read-only [ 91.561310][ T5090] NILFS (loop0): error -5 truncating bmap (ino=16) [ 91.569317][ T5090] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 91.579610][ T5090] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 91.589037][ T5090] NILFS (loop0): error -5 truncating bmap (ino=16) [ 91.607151][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 91.616180][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 91.624900][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 91.633928][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 91.643012][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./32/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./32/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./32/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./32/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./32/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./32/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./32") = 0 mkdir("./33", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5092 ./strace-static-x86_64: Process 5092 attached [pid 5092] set_robust_list(0x555556375660, 24) = 0 [pid 5092] chdir("./33") = 0 [pid 5092] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5092] setpgid(0, 0) = 0 [pid 5092] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5092] write(3, "1000", 4) = 4 [pid 5092] close(3) = 0 [pid 5092] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5092] memfd_create("syzkaller", 0) = 3 [pid 5092] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 91.652345][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5092] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5092] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5092] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5092] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5092] close(3) = 0 [pid 5092] mkdir("./file0", 0777) = 0 [pid 5092] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5092] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5092] chdir("./file0") = 0 [pid 5092] ioctl(4, LOOP_CLR_FD) = 0 [pid 5092] close(4) = 0 [ 91.728079][ T5092] loop0: detected capacity change from 0 to 2048 [ 91.747182][ T5093] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 91.760778][ T5092] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 91.771162][ T5092] Remounting filesystem read-only [pid 5092] creat("./file2", 040) = 4 [pid 5092] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5092] exit_group(0) = ? [pid 5092] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5092, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./33", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./33", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./33/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./33/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./33/binderfs") = 0 [ 91.776843][ T5092] NILFS (loop0): error -5 truncating bmap (ino=16) [ 91.784537][ T5092] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 91.794658][ T5092] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 91.804835][ T5092] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./33/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./33/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./33/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./33/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./33/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./33/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./33") = 0 mkdir("./34", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 [ 91.824060][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 91.831083][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 91.838570][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 91.847681][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 91.857483][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 91.866855][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5094 ./strace-static-x86_64: Process 5094 attached [pid 5094] set_robust_list(0x555556375660, 24) = 0 [pid 5094] chdir("./34") = 0 [pid 5094] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5094] setpgid(0, 0) = 0 [pid 5094] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5094] write(3, "1000", 4) = 4 [pid 5094] close(3) = 0 [pid 5094] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5094] memfd_create("syzkaller", 0) = 3 [pid 5094] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [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"..., 1048576) = 1048576 [pid 5094] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5094] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5094] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5094] close(3) = 0 [pid 5094] mkdir("./file0", 0777) = 0 [pid 5094] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5094] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5094] chdir("./file0") = 0 [pid 5094] ioctl(4, LOOP_CLR_FD) = 0 [pid 5094] close(4) = 0 [ 91.951164][ T5094] loop0: detected capacity change from 0 to 2048 [ 91.967665][ T5095] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 91.974649][ T6] cfg80211: failed to load regulatory.db [pid 5094] creat("./file2", 040) = 4 [ 92.003251][ T5094] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 92.014675][ T5094] Remounting filesystem read-only [ 92.020378][ T5094] NILFS (loop0): error -5 truncating bmap (ino=16) [ 92.032054][ T5094] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 92.041997][ T5094] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5094] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5094] exit_group(0) = ? [pid 5094] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5094, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./34", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./34", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./34/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./34/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./34/binderfs") = 0 [ 92.051614][ T5094] NILFS (loop0): error -5 truncating bmap (ino=16) [ 92.072307][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 92.079520][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 92.087459][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./34/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./34/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./34/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./34/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./34/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./34/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./34") = 0 mkdir("./35", 0777) = 0 [ 92.096933][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 92.105862][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 92.115191][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5096 ./strace-static-x86_64: Process 5096 attached [pid 5096] set_robust_list(0x555556375660, 24) = 0 [pid 5096] chdir("./35") = 0 [pid 5096] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5096] setpgid(0, 0) = 0 [pid 5096] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5096] write(3, "1000", 4) = 4 [pid 5096] close(3) = 0 [pid 5096] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5096] memfd_create("syzkaller", 0) = 3 [pid 5096] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5096] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5096] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5096] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5096] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5096] close(3) = 0 [pid 5096] mkdir("./file0", 0777) = 0 [pid 5096] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5096] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5096] chdir("./file0") = 0 [pid 5096] ioctl(4, LOOP_CLR_FD) = 0 [pid 5096] close(4) = 0 [ 92.209415][ T5096] loop0: detected capacity change from 0 to 2048 [ 92.227076][ T5097] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 92.235828][ T5096] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 92.248586][ T5096] Remounting filesystem read-only [pid 5096] creat("./file2", 040) = 4 [pid 5096] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5096] exit_group(0) = ? [pid 5096] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5096, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./35", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./35", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./35/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./35/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./35/binderfs") = 0 [ 92.254141][ T5096] NILFS (loop0): error -5 truncating bmap (ino=16) [ 92.262111][ T5096] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 92.272560][ T5096] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 92.281960][ T5096] NILFS (loop0): error -5 truncating bmap (ino=16) [ 92.301985][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./35/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./35/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./35/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./35/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./35/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./35/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./35") = 0 mkdir("./36", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 [ 92.309031][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 92.317342][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 92.328135][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 92.337471][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 92.346901][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5098 ./strace-static-x86_64: Process 5098 attached [pid 5098] set_robust_list(0x555556375660, 24) = 0 [pid 5098] chdir("./36") = 0 [pid 5098] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5098] setpgid(0, 0) = 0 [pid 5098] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5098] write(3, "1000", 4) = 4 [pid 5098] close(3) = 0 [pid 5098] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5098] memfd_create("syzkaller", 0) = 3 [pid 5098] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5098] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5098] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5098] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5098] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5098] close(3) = 0 [pid 5098] mkdir("./file0", 0777) = 0 [pid 5098] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5098] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5098] chdir("./file0") = 0 [pid 5098] ioctl(4, LOOP_CLR_FD) = 0 [pid 5098] close(4) = 0 [ 92.431185][ T5098] loop0: detected capacity change from 0 to 2048 [ 92.448199][ T5099] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 92.464754][ T5098] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5098] creat("./file2", 040) = 4 [pid 5098] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5098] exit_group(0) = ? [pid 5098] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5098, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./36", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./36", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./36/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./36/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./36/binderfs") = 0 [ 92.476406][ T5098] Remounting filesystem read-only [ 92.482019][ T5098] NILFS (loop0): error -5 truncating bmap (ino=16) [ 92.496139][ T5098] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 92.507147][ T5098] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 92.517268][ T5098] NILFS (loop0): error -5 truncating bmap (ino=16) [ 92.531981][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 92.539240][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 92.546624][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 92.562115][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 92.570988][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./36/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./36/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./36/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./36/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./36/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./36/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./36") = 0 mkdir("./37", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5100 ./strace-static-x86_64: Process 5100 attached [pid 5100] set_robust_list(0x555556375660, 24) = 0 [pid 5100] chdir("./37") = 0 [pid 5100] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [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) = 4 [pid 5100] close(3) = 0 [pid 5100] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5100] memfd_create("syzkaller", 0) = 3 [pid 5100] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 92.580237][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [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"..., 1048576) = 1048576 [pid 5100] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5100] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5100] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5100] close(3) = 0 [pid 5100] mkdir("./file0", 0777) = 0 [pid 5100] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5100] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5100] chdir("./file0") = 0 [pid 5100] ioctl(4, LOOP_CLR_FD) = 0 [pid 5100] close(4) = 0 [ 92.647956][ T5100] loop0: detected capacity change from 0 to 2048 [ 92.664664][ T5101] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 92.675613][ T5100] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 92.690584][ T5100] Remounting filesystem read-only [pid 5100] creat("./file2", 040) = 4 [pid 5100] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5100] exit_group(0) = ? [pid 5100] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5100, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- umount2("./37", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./37", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./37/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./37/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./37/binderfs") = 0 [ 92.697789][ T5100] NILFS (loop0): error -5 truncating bmap (ino=16) [ 92.712454][ T5100] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 92.725052][ T5100] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 92.734818][ T5100] NILFS (loop0): error -5 truncating bmap (ino=16) [ 92.754241][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 92.761618][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 92.768968][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 92.777970][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 92.787172][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./37/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./37/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./37/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./37/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./37/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./37/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./37") = 0 mkdir("./38", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5102 ./strace-static-x86_64: Process 5102 attached [pid 5102] set_robust_list(0x555556375660, 24) = 0 [pid 5102] chdir("./38") = 0 [pid 5102] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5102] setpgid(0, 0) = 0 [pid 5102] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5102] write(3, "1000", 4) = 4 [pid 5102] close(3) = 0 [pid 5102] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5102] memfd_create("syzkaller", 0) = 3 [pid 5102] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 92.797990][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [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"..., 1048576) = 1048576 [pid 5102] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5102] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5102] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5102] close(3) = 0 [pid 5102] mkdir("./file0", 0777) = 0 [pid 5102] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5102] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5102] chdir("./file0") = 0 [pid 5102] ioctl(4, LOOP_CLR_FD) = 0 [pid 5102] close(4) = 0 [ 92.863953][ T5102] loop0: detected capacity change from 0 to 2048 [ 92.879841][ T5103] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 92.895378][ T5102] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 92.908634][ T5102] Remounting filesystem read-only [pid 5102] creat("./file2", 040) = 4 [pid 5102] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5102] exit_group(0) = ? [pid 5102] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5102, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./38", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./38", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./38/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./38/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./38/binderfs") = 0 [ 92.914696][ T5102] NILFS (loop0): error -5 truncating bmap (ino=16) [ 92.930402][ T5102] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 92.940824][ T5102] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 92.950495][ T5102] NILFS (loop0): error -5 truncating bmap (ino=16) [ 92.965282][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 92.972888][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 92.980226][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 92.989599][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 92.998877][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./38/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./38/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./38/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./38/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./38/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./38/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./38") = 0 mkdir("./39", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 93.008293][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5104 ./strace-static-x86_64: Process 5104 attached [pid 5104] set_robust_list(0x555556375660, 24) = 0 [pid 5104] chdir("./39") = 0 [pid 5104] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5104] setpgid(0, 0) = 0 [pid 5104] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5104] write(3, "1000", 4) = 4 [pid 5104] close(3) = 0 [pid 5104] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5104] memfd_create("syzkaller", 0) = 3 [pid 5104] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [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"..., 1048576) = 1048576 [pid 5104] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5104] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5104] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5104] close(3) = 0 [pid 5104] mkdir("./file0", 0777) = 0 [pid 5104] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5104] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5104] chdir("./file0") = 0 [pid 5104] ioctl(4, LOOP_CLR_FD) = 0 [pid 5104] close(4) = 0 [ 93.082589][ T5104] loop0: detected capacity change from 0 to 2048 [ 93.102633][ T5105] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5104] creat("./file2", 040) = 4 [ 93.143867][ T5104] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 93.154747][ T5104] Remounting filesystem read-only [ 93.160232][ T5104] NILFS (loop0): error -5 truncating bmap (ino=16) [ 93.168902][ T5104] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 93.179062][ T5104] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5104] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5104] exit_group(0) = ? [pid 5104] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5104, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./39", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./39", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./39/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./39/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./39/binderfs") = 0 [ 93.188290][ T5104] NILFS (loop0): error -5 truncating bmap (ino=16) [ 93.204620][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 93.211819][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 93.219126][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 93.229086][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./39/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./39/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./39/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./39/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./39/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./39/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./39") = 0 mkdir("./40", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5106 ./strace-static-x86_64: Process 5106 attached [pid 5106] set_robust_list(0x555556375660, 24) = 0 [pid 5106] chdir("./40") = 0 [pid 5106] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5106] setpgid(0, 0) = 0 [pid 5106] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5106] write(3, "1000", 4) = 4 [pid 5106] close(3) = 0 [pid 5106] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5106] memfd_create("syzkaller", 0) = 3 [pid 5106] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5106] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5106] munmap(0x7f093b4c4000, 1048576) = 0 [ 93.238278][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 93.248067][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5106] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5106] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5106] close(3) = 0 [pid 5106] mkdir("./file0", 0777) = 0 [pid 5106] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5106] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5106] chdir("./file0") = 0 [pid 5106] ioctl(4, LOOP_CLR_FD) = 0 [pid 5106] close(4) = 0 [ 93.307085][ T5106] loop0: detected capacity change from 0 to 2048 [ 93.326187][ T5107] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 93.341345][ T5106] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5106] creat("./file2", 040) = 4 [pid 5106] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5106] exit_group(0) = ? [pid 5106] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5106, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./40", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./40", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./40/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./40/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./40/binderfs") = 0 [ 93.360899][ T5106] Remounting filesystem read-only [ 93.366190][ T5106] NILFS (loop0): error -5 truncating bmap (ino=16) [ 93.374169][ T5106] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 93.384367][ T5106] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 93.394024][ T5106] NILFS (loop0): error -5 truncating bmap (ino=16) [ 93.408416][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 93.416090][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 93.423606][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 93.433391][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 93.443531][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 93.452684][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer umount2("./40/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./40/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./40/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./40/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./40/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./40/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./40") = 0 mkdir("./41", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5108 ./strace-static-x86_64: Process 5108 attached [pid 5108] set_robust_list(0x555556375660, 24) = 0 [pid 5108] chdir("./41") = 0 [pid 5108] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5108] setpgid(0, 0) = 0 [pid 5108] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5108] write(3, "1000", 4) = 4 [pid 5108] close(3) = 0 [pid 5108] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5108] memfd_create("syzkaller", 0) = 3 [pid 5108] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5108] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5108] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5108] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5108] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5108] close(3) = 0 [pid 5108] mkdir("./file0", 0777) = 0 [pid 5108] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5108] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5108] chdir("./file0") = 0 [pid 5108] ioctl(4, LOOP_CLR_FD) = 0 [pid 5108] close(4) = 0 [ 93.518507][ T5108] loop0: detected capacity change from 0 to 2048 [ 93.535350][ T5109] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5108] creat("./file2", 040) = 4 [pid 5108] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5108] exit_group(0) = ? [pid 5108] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5108, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./41", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./41", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./41/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./41/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./41/binderfs") = 0 [ 93.560210][ T5108] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 93.570444][ T5108] Remounting filesystem read-only [ 93.576455][ T5108] NILFS (loop0): error -5 truncating bmap (ino=16) [ 93.584739][ T5108] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 93.596334][ T5108] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 93.607737][ T5108] NILFS (loop0): error -5 truncating bmap (ino=16) [ 93.630375][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 93.637524][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 93.645137][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 93.654250][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 93.663273][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./41/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./41/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./41/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./41/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./41/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./41/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./41") = 0 mkdir("./42", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5110 ./strace-static-x86_64: Process 5110 attached [pid 5110] set_robust_list(0x555556375660, 24) = 0 [pid 5110] chdir("./42") = 0 [pid 5110] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5110] setpgid(0, 0) = 0 [pid 5110] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5110] write(3, "1000", 4) = 4 [pid 5110] close(3) = 0 [pid 5110] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5110] memfd_create("syzkaller", 0) = 3 [pid 5110] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 93.672408][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5110] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5110] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5110] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5110] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5110] close(3) = 0 [pid 5110] mkdir("./file0", 0777) = 0 [pid 5110] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5110] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5110] chdir("./file0") = 0 [pid 5110] ioctl(4, LOOP_CLR_FD) = 0 [pid 5110] close(4) = 0 [ 93.737847][ T5110] loop0: detected capacity change from 0 to 2048 [ 93.754158][ T5111] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 93.760817][ T5110] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 93.775499][ T5110] Remounting filesystem read-only [ 93.781159][ T5110] NILFS (loop0): error -5 truncating bmap (ino=16) [pid 5110] creat("./file2", 040) = 4 [pid 5110] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5110] exit_group(0) = ? [pid 5110] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5110, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- umount2("./42", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./42", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./42/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./42/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./42/binderfs") = 0 [ 93.789720][ T5110] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 93.800849][ T5110] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 93.812280][ T5110] NILFS (loop0): error -5 truncating bmap (ino=16) [ 93.832692][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./42/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./42/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./42/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./42/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./42/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./42/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./42") = 0 mkdir("./43", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5112 ./strace-static-x86_64: Process 5112 attached [pid 5112] set_robust_list(0x555556375660, 24) = 0 [pid 5112] chdir("./43") = 0 [pid 5112] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5112] setpgid(0, 0) = 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 [ 93.839805][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 93.847571][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 93.856754][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 93.866155][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 93.875707][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5112] memfd_create("syzkaller", 0) = 3 [pid 5112] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [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"..., 1048576) = 1048576 [pid 5112] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5112] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5112] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5112] close(3) = 0 [pid 5112] mkdir("./file0", 0777) = 0 [pid 5112] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5112] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5112] chdir("./file0") = 0 [pid 5112] ioctl(4, LOOP_CLR_FD) = 0 [pid 5112] close(4) = 0 [ 93.945310][ T5112] loop0: detected capacity change from 0 to 2048 [ 93.966696][ T5113] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5112] creat("./file2", 040) = 4 [ 93.995812][ T5112] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 94.006626][ T5112] Remounting filesystem read-only [ 94.012730][ T5112] NILFS (loop0): error -5 truncating bmap (ino=16) [ 94.029238][ T5112] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [pid 5112] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5112] exit_group(0) = ? [pid 5112] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5112, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- umount2("./43", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./43", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./43/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./43/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./43/binderfs") = 0 [ 94.039223][ T5112] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 94.049129][ T5112] NILFS (loop0): error -5 truncating bmap (ino=16) [ 94.070149][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 94.077197][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 94.085169][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./43/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./43/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./43/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./43/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./43/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./43/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./43") = 0 mkdir("./44", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5114 ./strace-static-x86_64: Process 5114 attached [pid 5114] set_robust_list(0x555556375660, 24) = 0 [pid 5114] chdir("./44") = 0 [pid 5114] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5114] setpgid(0, 0) = 0 [pid 5114] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [ 94.094983][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 94.103924][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 94.114719][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5114] write(3, "1000", 4) = 4 [pid 5114] close(3) = 0 [pid 5114] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5114] memfd_create("syzkaller", 0) = 3 [pid 5114] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [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"..., 1048576) = 1048576 [pid 5114] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5114] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5114] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5114] close(3) = 0 [pid 5114] mkdir("./file0", 0777) = 0 [pid 5114] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5114] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5114] chdir("./file0") = 0 [pid 5114] ioctl(4, LOOP_CLR_FD) = 0 [pid 5114] close(4) = 0 [ 94.201262][ T5114] loop0: detected capacity change from 0 to 2048 [ 94.220678][ T5115] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 94.225909][ T5114] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 94.242354][ T5114] Remounting filesystem read-only [pid 5114] creat("./file2", 040) = 4 [pid 5114] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5114] exit_group(0) = ? [pid 5114] +++ exited with 0 +++ --- 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 */} --- umount2("./44", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./44", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [ 94.248148][ T5114] NILFS (loop0): error -5 truncating bmap (ino=16) [ 94.256561][ T5114] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 94.267429][ T5114] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 94.277253][ T5114] NILFS (loop0): error -5 truncating bmap (ino=16) [ 94.291781][ T62] NILFS (loop0): discard dirty page: offset=4096, ino=6 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./44/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./44/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./44/binderfs") = 0 umount2("./44/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./44/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./44/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./44/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./44/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./44/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./44") = 0 mkdir("./45", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 [ 94.300099][ T62] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 94.309299][ T62] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 94.318764][ T62] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 94.329958][ T62] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 94.341106][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5116 ./strace-static-x86_64: Process 5116 attached [pid 5116] set_robust_list(0x555556375660, 24) = 0 [pid 5116] chdir("./45") = 0 [pid 5116] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5116] setpgid(0, 0) = 0 [pid 5116] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5116] write(3, "1000", 4) = 4 [pid 5116] close(3) = 0 [pid 5116] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5116] memfd_create("syzkaller", 0) = 3 [pid 5116] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [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"..., 1048576) = 1048576 [pid 5116] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5116] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5116] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5116] close(3) = 0 [pid 5116] mkdir("./file0", 0777) = 0 [pid 5116] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5116] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5116] chdir("./file0") = 0 [pid 5116] ioctl(4, LOOP_CLR_FD) = 0 [pid 5116] close(4) = 0 [ 94.435566][ T5116] loop0: detected capacity change from 0 to 2048 [ 94.455340][ T5117] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 94.462157][ T5116] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 94.476912][ T5116] Remounting filesystem read-only [pid 5116] creat("./file2", 040) = 4 [pid 5116] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5116] exit_group(0) = ? [pid 5116] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5116, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./45", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./45", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./45/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./45/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./45/binderfs") = 0 [ 94.483432][ T5116] NILFS (loop0): error -5 truncating bmap (ino=16) [ 94.492776][ T5116] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 94.504531][ T5116] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 94.515611][ T5116] NILFS (loop0): error -5 truncating bmap (ino=16) [ 94.537758][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 94.545268][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 94.553402][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 94.562957][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 94.572090][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./45/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./45/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./45/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./45/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./45/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./45/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./45") = 0 mkdir("./46", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 94.581357][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5118 ./strace-static-x86_64: Process 5118 attached [pid 5118] set_robust_list(0x555556375660, 24) = 0 [pid 5118] chdir("./46") = 0 [pid 5118] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5118] setpgid(0, 0) = 0 [pid 5118] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5118] write(3, "1000", 4) = 4 [pid 5118] close(3) = 0 [pid 5118] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5118] memfd_create("syzkaller", 0) = 3 [pid 5118] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5118] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5118] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5118] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5118] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5118] close(3) = 0 [pid 5118] mkdir("./file0", 0777) = 0 [pid 5118] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5118] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5118] chdir("./file0") = 0 [pid 5118] ioctl(4, LOOP_CLR_FD) = 0 [pid 5118] close(4) = 0 [ 94.662563][ T5118] loop0: detected capacity change from 0 to 2048 [ 94.680199][ T5119] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5118] creat("./file2", 040) = 4 [pid 5118] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5118] exit_group(0) = ? [pid 5118] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5118, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- umount2("./46", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./46", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./46/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./46/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./46/binderfs") = 0 [ 94.706404][ T5118] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 94.717345][ T5118] Remounting filesystem read-only [ 94.722661][ T5118] NILFS (loop0): error -5 truncating bmap (ino=16) [ 94.731892][ T5118] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 94.741819][ T5118] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 94.751150][ T5118] NILFS (loop0): error -5 truncating bmap (ino=16) [ 94.772087][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 94.779199][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 94.786794][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 94.796834][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 94.808768][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./46/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./46/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./46/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./46/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 94.818357][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer openat(AT_FDCWD, "./46/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./46/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./46") = 0 mkdir("./47", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5120 attached [pid 5120] set_robust_list(0x555556375660, 24) = 0 [pid 5120] chdir("./47") = 0 [pid 5120] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5120] setpgid(0, 0) = 0 [pid 5024] <... clone resumed>, child_tidptr=0x555556375650) = 5120 [pid 5120] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5120] write(3, "1000", 4) = 4 [pid 5120] close(3) = 0 [pid 5120] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5120] memfd_create("syzkaller", 0) = 3 [pid 5120] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5120] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5120] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5120] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5120] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5120] close(3) = 0 [pid 5120] mkdir("./file0", 0777) = 0 [pid 5120] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5120] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5120] chdir("./file0") = 0 [pid 5120] ioctl(4, LOOP_CLR_FD) = 0 [pid 5120] close(4) = 0 [ 94.918963][ T5120] loop0: detected capacity change from 0 to 2048 [ 94.937470][ T5121] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 94.942505][ T5120] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 94.958643][ T5120] Remounting filesystem read-only [pid 5120] creat("./file2", 040) = 4 [pid 5120] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5120] exit_group(0) = ? [pid 5120] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5120, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- umount2("./47", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./47", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./47/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./47/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./47/binderfs") = 0 [ 94.964444][ T5120] NILFS (loop0): error -5 truncating bmap (ino=16) [ 94.974661][ T5120] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 94.986175][ T5120] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 94.996989][ T5120] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./47/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./47/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./47/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./47/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./47/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./47/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./47") = 0 mkdir("./48", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 [ 95.013976][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 95.021918][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 95.029377][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 95.039183][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 95.049053][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 95.058418][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5122 ./strace-static-x86_64: Process 5122 attached [pid 5122] set_robust_list(0x555556375660, 24) = 0 [pid 5122] chdir("./48") = 0 [pid 5122] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5122] setpgid(0, 0) = 0 [pid 5122] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5122] write(3, "1000", 4) = 4 [pid 5122] close(3) = 0 [pid 5122] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5122] memfd_create("syzkaller", 0) = 3 [pid 5122] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5122] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5122] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5122] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5122] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5122] close(3) = 0 [pid 5122] mkdir("./file0", 0777) = 0 [pid 5122] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5122] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5122] chdir("./file0") = 0 [pid 5122] ioctl(4, LOOP_CLR_FD) = 0 [pid 5122] close(4) = 0 [ 95.142266][ T5122] loop0: detected capacity change from 0 to 2048 [ 95.158581][ T5123] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5122] creat("./file2", 040) = 4 [pid 5122] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5122] exit_group(0) = ? [pid 5122] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5122, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./48", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./48", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./48/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./48/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./48/binderfs") = 0 [ 95.185973][ T5122] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 95.197466][ T5122] Remounting filesystem read-only [ 95.203280][ T5122] NILFS (loop0): error -5 truncating bmap (ino=16) [ 95.212877][ T5122] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 95.224348][ T5122] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 95.233921][ T5122] NILFS (loop0): error -5 truncating bmap (ino=16) [ 95.252351][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 95.259420][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 95.267169][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 95.276181][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 95.285546][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./48/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./48/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./48/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./48/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./48/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./48/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./48") = 0 mkdir("./49", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5124 ./strace-static-x86_64: Process 5124 attached [pid 5124] set_robust_list(0x555556375660, 24) = 0 [pid 5124] chdir("./49") = 0 [pid 5124] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5124] setpgid(0, 0) = 0 [pid 5124] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5124] write(3, "1000", 4) = 4 [pid 5124] close(3) = 0 [pid 5124] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5124] memfd_create("syzkaller", 0) = 3 [pid 5124] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 95.294992][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [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"..., 1048576) = 1048576 [pid 5124] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5124] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5124] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5124] close(3) = 0 [pid 5124] mkdir("./file0", 0777) = 0 [pid 5124] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5124] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5124] chdir("./file0") = 0 [pid 5124] ioctl(4, LOOP_CLR_FD) = 0 [pid 5124] close(4) = 0 [ 95.355775][ T5124] loop0: detected capacity change from 0 to 2048 [ 95.373113][ T5125] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 95.391878][ T5124] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5124] creat("./file2", 040) = 4 [pid 5124] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5124] exit_group(0) = ? [pid 5124] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5124, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./49", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./49", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./49/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./49/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./49/binderfs") = 0 [ 95.402262][ T5124] Remounting filesystem read-only [ 95.408052][ T5124] NILFS (loop0): error -5 truncating bmap (ino=16) [ 95.416951][ T5124] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 95.427378][ T5124] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 95.436964][ T5124] NILFS (loop0): error -5 truncating bmap (ino=16) [ 95.456302][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 95.463810][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 95.471138][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 95.480290][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 95.489430][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./49/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./49/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./49/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./49/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./49/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./49/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./49") = 0 mkdir("./50", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5126 ./strace-static-x86_64: Process 5126 attached [pid 5126] set_robust_list(0x555556375660, 24) = 0 [pid 5126] chdir("./50") = 0 [ 95.498813][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5126] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5126] setpgid(0, 0) = 0 [pid 5126] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5126] write(3, "1000", 4) = 4 [pid 5126] close(3) = 0 [pid 5126] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5126] memfd_create("syzkaller", 0) = 3 [pid 5126] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [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"..., 1048576) = 1048576 [pid 5126] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5126] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5126] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5126] close(3) = 0 [pid 5126] mkdir("./file0", 0777) = 0 [pid 5126] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5126] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5126] chdir("./file0") = 0 [pid 5126] ioctl(4, LOOP_CLR_FD) = 0 [pid 5126] close(4) = 0 [ 95.582614][ T5126] loop0: detected capacity change from 0 to 2048 [ 95.600528][ T5127] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5126] creat("./file2", 040) = 4 [pid 5126] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5126] exit_group(0) = ? [pid 5126] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5126, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./50", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./50", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./50/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./50/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./50/binderfs") = 0 [ 95.625723][ T5126] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 95.638011][ T5126] Remounting filesystem read-only [ 95.643456][ T5126] NILFS (loop0): error -5 truncating bmap (ino=16) [ 95.652653][ T5126] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 95.664460][ T5126] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 95.675325][ T5126] NILFS (loop0): error -5 truncating bmap (ino=16) [ 95.697105][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 95.705473][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 95.712850][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 95.722240][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 95.731213][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./50/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./50/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./50/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./50/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./50/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./50/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./50") = 0 mkdir("./51", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5128 ./strace-static-x86_64: Process 5128 attached [pid 5128] set_robust_list(0x555556375660, 24) = 0 [pid 5128] chdir("./51") = 0 [pid 5128] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5128] setpgid(0, 0) = 0 [pid 5128] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5128] write(3, "1000", 4) = 4 [pid 5128] close(3) = 0 [pid 5128] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5128] memfd_create("syzkaller", 0) = 3 [pid 5128] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 95.740425][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [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"..., 1048576) = 1048576 [pid 5128] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5128] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5128] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5128] close(3) = 0 [pid 5128] mkdir("./file0", 0777) = 0 [pid 5128] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5128] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5128] chdir("./file0") = 0 [pid 5128] ioctl(4, LOOP_CLR_FD) = 0 [pid 5128] close(4) = 0 [ 95.800705][ T5128] loop0: detected capacity change from 0 to 2048 [ 95.818480][ T5129] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 95.825808][ T5128] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 95.840106][ T5128] Remounting filesystem read-only [pid 5128] creat("./file2", 040) = 4 [pid 5128] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5128] exit_group(0) = ? [pid 5128] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5128, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./51", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./51", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./51/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./51/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./51/binderfs") = 0 [ 95.845870][ T5128] NILFS (loop0): error -5 truncating bmap (ino=16) [ 95.854032][ T5128] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 95.864677][ T5128] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 95.874413][ T5128] NILFS (loop0): error -5 truncating bmap (ino=16) [ 95.889232][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./51/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./51/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./51/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./51/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./51/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./51/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./51") = 0 mkdir("./52", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5130 ./strace-static-x86_64: Process 5130 attached [pid 5130] set_robust_list(0x555556375660, 24) = 0 [pid 5130] chdir("./52") = 0 [pid 5130] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5130] setpgid(0, 0) = 0 [pid 5130] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5130] write(3, "1000", 4) = 4 [pid 5130] close(3) = 0 [pid 5130] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5130] memfd_create("syzkaller", 0) = 3 [pid 5130] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 95.896944][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 95.904367][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 95.913697][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 95.922688][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 95.932588][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5130] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5130] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5130] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5130] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5130] close(3) = 0 [pid 5130] mkdir("./file0", 0777) = 0 [pid 5130] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5130] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5130] chdir("./file0") = 0 [pid 5130] ioctl(4, LOOP_CLR_FD) = 0 [pid 5130] close(4) = 0 [ 95.993144][ T5130] loop0: detected capacity change from 0 to 2048 [ 96.009492][ T5131] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 96.019957][ T5130] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 96.031092][ T5130] Remounting filesystem read-only [pid 5130] creat("./file2", 040) = 4 [pid 5130] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5130] exit_group(0) = ? [pid 5130] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5130, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./52", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./52", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./52/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./52/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./52/binderfs") = 0 [ 96.036875][ T5130] NILFS (loop0): error -5 truncating bmap (ino=16) [ 96.045820][ T5130] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 96.056264][ T5130] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 96.066715][ T5130] NILFS (loop0): error -5 truncating bmap (ino=16) [ 96.081765][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./52/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./52/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./52/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./52/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./52/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./52/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./52") = 0 mkdir("./53", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5132 ./strace-static-x86_64: Process 5132 attached [pid 5132] set_robust_list(0x555556375660, 24) = 0 [pid 5132] chdir("./53") = 0 [pid 5132] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5132] setpgid(0, 0) = 0 [pid 5132] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5132] write(3, "1000", 4) = 4 [pid 5132] close(3) = 0 [pid 5132] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5132] memfd_create("syzkaller", 0) = 3 [pid 5132] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 96.091113][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 96.098962][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 96.110111][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 96.119622][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 96.130037][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5132] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5132] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5132] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5132] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5132] close(3) = 0 [pid 5132] mkdir("./file0", 0777) = 0 [pid 5132] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5132] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5132] chdir("./file0") = 0 [pid 5132] ioctl(4, LOOP_CLR_FD) = 0 [pid 5132] close(4) = 0 [ 96.189489][ T5132] loop0: detected capacity change from 0 to 2048 [ 96.209407][ T5133] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 96.221310][ T5132] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 96.231933][ T5132] Remounting filesystem read-only [pid 5132] creat("./file2", 040) = 4 [pid 5132] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5132] exit_group(0) = ? [pid 5132] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5132, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./53", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./53", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./53/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./53/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./53/binderfs") = 0 [ 96.237645][ T5132] NILFS (loop0): error -5 truncating bmap (ino=16) [ 96.245829][ T5132] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 96.256675][ T5132] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 96.266289][ T5132] NILFS (loop0): error -5 truncating bmap (ino=16) [ 96.280807][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./53/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./53/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./53/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./53/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./53/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./53/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./53") = 0 mkdir("./54", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5134 ./strace-static-x86_64: Process 5134 attached [pid 5134] set_robust_list(0x555556375660, 24) = 0 [pid 5134] chdir("./54") = 0 [pid 5134] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5134] setpgid(0, 0) = 0 [pid 5134] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5134] write(3, "1000", 4) = 4 [pid 5134] close(3) = 0 [pid 5134] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5134] memfd_create("syzkaller", 0) = 3 [pid 5134] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 96.288048][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 96.295519][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 96.304831][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 96.313792][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 96.323132][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5134] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5134] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5134] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5134] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5134] close(3) = 0 [pid 5134] mkdir("./file0", 0777) = 0 [pid 5134] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5134] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5134] chdir("./file0") = 0 [pid 5134] ioctl(4, LOOP_CLR_FD) = 0 [pid 5134] close(4) = 0 [ 96.387462][ T5134] loop0: detected capacity change from 0 to 2048 [ 96.403171][ T5135] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5134] creat("./file2", 040) = 4 [pid 5134] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5134] exit_group(0) = ? [pid 5134] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5134, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./54", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./54", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./54/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./54/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./54/binderfs") = 0 [ 96.433109][ T5134] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 96.444317][ T5134] Remounting filesystem read-only [ 96.449888][ T5134] NILFS (loop0): error -5 truncating bmap (ino=16) [ 96.458272][ T5134] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 96.469266][ T5134] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 96.478904][ T5134] NILFS (loop0): error -5 truncating bmap (ino=16) [ 96.496979][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 96.505009][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 96.513050][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 96.522350][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 96.532249][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./54/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./54/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./54/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./54/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./54/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./54/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./54") = 0 mkdir("./55", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 96.541327][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5136 ./strace-static-x86_64: Process 5136 attached [pid 5136] set_robust_list(0x555556375660, 24) = 0 [pid 5136] chdir("./55") = 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) = 0x7f093b4c4000 [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"..., 1048576) = 1048576 [pid 5136] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5136] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5136] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5136] close(3) = 0 [pid 5136] mkdir("./file0", 0777) = 0 [pid 5136] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5136] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5136] chdir("./file0") = 0 [pid 5136] ioctl(4, LOOP_CLR_FD) = 0 [pid 5136] close(4) = 0 [ 96.618965][ T5136] loop0: detected capacity change from 0 to 2048 [ 96.636348][ T5137] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 96.650368][ T5136] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 96.661334][ T5136] Remounting filesystem read-only [pid 5136] creat("./file2", 040) = 4 [pid 5136] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5136] exit_group(0) = ? [pid 5136] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5136, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./55", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./55", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./55/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./55/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./55/binderfs") = 0 [ 96.672134][ T5136] NILFS (loop0): error -5 truncating bmap (ino=16) [ 96.680122][ T5136] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 96.691544][ T5136] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 96.700832][ T5136] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./55/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./55/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./55/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./55/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./55/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./55/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./55") = 0 mkdir("./56", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5138 ./strace-static-x86_64: Process 5138 attached [ 96.716975][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 96.724074][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 96.731609][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 96.740606][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 96.749796][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 96.758964][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5138] set_robust_list(0x555556375660, 24) = 0 [pid 5138] chdir("./56") = 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 5138] write(3, "1000", 4) = 4 [pid 5138] close(3) = 0 [pid 5138] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5138] memfd_create("syzkaller", 0) = 3 [pid 5138] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [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"..., 1048576) = 1048576 [pid 5138] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5138] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5138] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5138] close(3) = 0 [pid 5138] mkdir("./file0", 0777) = 0 [pid 5138] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5138] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5138] chdir("./file0") = 0 [pid 5138] ioctl(4, LOOP_CLR_FD) = 0 [pid 5138] close(4) = 0 [ 96.842208][ T5138] loop0: detected capacity change from 0 to 2048 [ 96.858754][ T5139] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5138] creat("./file2", 040) = 4 [pid 5138] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5138] exit_group(0) = ? [pid 5138] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5138, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./56", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./56", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./56/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./56/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./56/binderfs") = 0 [ 96.887126][ T5138] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 96.899511][ T5138] Remounting filesystem read-only [ 96.904810][ T5138] NILFS (loop0): error -5 truncating bmap (ino=16) [ 96.912613][ T5138] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 96.923109][ T5138] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 96.933457][ T5138] NILFS (loop0): error -5 truncating bmap (ino=16) [ 96.951897][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 96.958989][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 96.966473][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 96.975447][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 96.984538][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./56/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./56/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./56/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./56/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./56/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./56/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./56") = 0 mkdir("./57", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5140 ./strace-static-x86_64: Process 5140 attached [pid 5140] set_robust_list(0x555556375660, 24) = 0 [pid 5140] chdir("./57") = 0 [ 96.994690][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5140] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5140] setpgid(0, 0) = 0 [pid 5140] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5140] write(3, "1000", 4) = 4 [pid 5140] close(3) = 0 [pid 5140] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5140] memfd_create("syzkaller", 0) = 3 [pid 5140] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [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"..., 1048576) = 1048576 [pid 5140] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5140] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5140] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5140] close(3) = 0 [pid 5140] mkdir("./file0", 0777) = 0 [pid 5140] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5140] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5140] chdir("./file0") = 0 [pid 5140] ioctl(4, LOOP_CLR_FD) = 0 [pid 5140] close(4) = 0 [ 97.079760][ T5140] loop0: detected capacity change from 0 to 2048 [ 97.097813][ T5141] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 97.112682][ T5140] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 97.124860][ T5140] Remounting filesystem read-only [pid 5140] creat("./file2", 040) = 4 [pid 5140] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5140] exit_group(0) = ? [pid 5140] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5140, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./57", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./57", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./57/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./57/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./57/binderfs") = 0 [ 97.130563][ T5140] NILFS (loop0): error -5 truncating bmap (ino=16) [ 97.140218][ T5140] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 97.150799][ T5140] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 97.166604][ T5140] NILFS (loop0): error -5 truncating bmap (ino=16) [ 97.182573][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 97.190217][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 97.198037][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 97.209730][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 97.219529][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./57/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./57/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./57/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./57/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./57/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./57/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./57") = 0 mkdir("./58", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5142 ./strace-static-x86_64: Process 5142 attached [pid 5142] set_robust_list(0x555556375660, 24) = 0 [pid 5142] chdir("./58") = 0 [pid 5142] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5142] setpgid(0, 0) = 0 [pid 5142] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5142] write(3, "1000", 4) = 4 [pid 5142] close(3) = 0 [pid 5142] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5142] memfd_create("syzkaller", 0) = 3 [pid 5142] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5142] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5142] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5142] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 97.230393][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5142] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5142] close(3) = 0 [pid 5142] mkdir("./file0", 0777) = 0 [pid 5142] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5142] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5142] chdir("./file0") = 0 [pid 5142] ioctl(4, LOOP_CLR_FD) = 0 [pid 5142] close(4) = 0 [ 97.295029][ T5142] loop0: detected capacity change from 0 to 2048 [ 97.314461][ T5143] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 97.325544][ T5142] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 97.337089][ T5142] Remounting filesystem read-only [pid 5142] creat("./file2", 040) = 4 [pid 5142] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5142] exit_group(0) = ? [pid 5142] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5142, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./58", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./58", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./58/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./58/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./58/binderfs") = 0 [ 97.343201][ T5142] NILFS (loop0): error -5 truncating bmap (ino=16) [ 97.351891][ T5142] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 97.362154][ T5142] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 97.371487][ T5142] NILFS (loop0): error -5 truncating bmap (ino=16) [ 97.393277][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 97.400331][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 97.409335][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 97.418910][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 97.429019][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./58/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./58/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./58/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./58/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./58/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./58/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./58") = 0 mkdir("./59", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5144 [ 97.438417][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer ./strace-static-x86_64: Process 5144 attached [pid 5144] set_robust_list(0x555556375660, 24) = 0 [pid 5144] chdir("./59") = 0 [pid 5144] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5144] setpgid(0, 0) = 0 [pid 5144] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5144] write(3, "1000", 4) = 4 [pid 5144] close(3) = 0 [pid 5144] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5144] memfd_create("syzkaller", 0) = 3 [pid 5144] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5144] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5144] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5144] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5144] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5144] close(3) = 0 [pid 5144] mkdir("./file0", 0777) = 0 [pid 5144] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5144] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5144] chdir("./file0") = 0 [pid 5144] ioctl(4, LOOP_CLR_FD) = 0 [pid 5144] close(4) = 0 [ 97.522134][ T5144] loop0: detected capacity change from 0 to 2048 [ 97.539075][ T5145] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 97.563385][ T5144] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5144] creat("./file2", 040) = 4 [pid 5144] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5144] exit_group(0) = ? [pid 5144] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5144, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./59", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./59", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./59/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./59/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./59/binderfs") = 0 [ 97.575104][ T5144] Remounting filesystem read-only [ 97.580644][ T5144] NILFS (loop0): error -5 truncating bmap (ino=16) [ 97.589247][ T5144] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 97.600039][ T5144] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 97.609957][ T5144] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./59/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./59/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./59/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./59/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./59/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./59/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./59") = 0 mkdir("./60", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 97.628020][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 97.635072][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 97.642430][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 97.651313][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 97.660230][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 97.669343][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5146 attached [pid 5146] set_robust_list(0x555556375660, 24) = 0 [pid 5146] chdir("./60") = 0 [pid 5146] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5146] setpgid(0, 0) = 0 [pid 5146] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5146] write(3, "1000", 4) = 4 [pid 5146] close(3) = 0 [pid 5146] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5146] memfd_create("syzkaller", 0) = 3 [pid 5146] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5024] <... clone resumed>, child_tidptr=0x555556375650) = 5146 [pid 5146] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5146] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5146] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5146] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5146] close(3) = 0 [pid 5146] mkdir("./file0", 0777) = 0 [pid 5146] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5146] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5146] chdir("./file0") = 0 [pid 5146] ioctl(4, LOOP_CLR_FD) = 0 [pid 5146] close(4) = 0 [ 97.748471][ T5146] loop0: detected capacity change from 0 to 2048 [ 97.766614][ T5147] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 97.771244][ T5146] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 97.787443][ T5146] Remounting filesystem read-only [pid 5146] creat("./file2", 040) = 4 [pid 5146] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5146] exit_group(0) = ? [pid 5146] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5146, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./60", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./60", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./60/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./60/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./60/binderfs") = 0 [ 97.792661][ T5146] NILFS (loop0): error -5 truncating bmap (ino=16) [ 97.811003][ T5146] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 97.824788][ T5146] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 97.835350][ T5146] NILFS (loop0): error -5 truncating bmap (ino=16) [ 97.855156][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 97.862619][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 97.870021][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 97.878995][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 97.888296][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./60/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./60/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./60/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./60/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./60/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./60/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./60") = 0 mkdir("./61", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5148 ./strace-static-x86_64: Process 5148 attached [pid 5148] set_robust_list(0x555556375660, 24) = 0 [pid 5148] chdir("./61") = 0 [pid 5148] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5148] setpgid(0, 0) = 0 [pid 5148] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5148] write(3, "1000", 4) = 4 [pid 5148] close(3) = 0 [pid 5148] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5148] memfd_create("syzkaller", 0) = 3 [pid 5148] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 97.898242][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5148] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5148] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5148] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5148] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5148] close(3) = 0 [pid 5148] mkdir("./file0", 0777) = 0 [pid 5148] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5148] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5148] chdir("./file0") = 0 [pid 5148] ioctl(4, LOOP_CLR_FD) = 0 [pid 5148] close(4) = 0 [ 97.962091][ T5148] loop0: detected capacity change from 0 to 2048 [ 97.977455][ T5149] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 98.003120][ T5148] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5148] creat("./file2", 040) = 4 [pid 5148] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5148] exit_group(0) = ? [pid 5148] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5148, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./61", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./61", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./61/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./61/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./61/binderfs") = 0 [ 98.013501][ T5148] Remounting filesystem read-only [ 98.019158][ T5148] NILFS (loop0): error -5 truncating bmap (ino=16) [ 98.026965][ T5148] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 98.037558][ T5148] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 98.049021][ T5148] NILFS (loop0): error -5 truncating bmap (ino=16) [ 98.068973][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 98.076191][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 98.083712][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 98.092751][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 98.102502][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./61/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./61/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./61/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./61/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./61/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./61/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./61") = 0 mkdir("./62", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5150 ./strace-static-x86_64: Process 5150 attached [pid 5150] set_robust_list(0x555556375660, 24) = 0 [pid 5150] chdir("./62") = 0 [pid 5150] prctl(PR_SET_PDEATHSIG, SIGKILL) = 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 5150] memfd_create("syzkaller", 0) = 3 [pid 5150] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 98.111766][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [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"..., 1048576) = 1048576 [pid 5150] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5150] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5150] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5150] close(3) = 0 [pid 5150] mkdir("./file0", 0777) = 0 [pid 5150] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5150] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5150] chdir("./file0") = 0 [pid 5150] ioctl(4, LOOP_CLR_FD) = 0 [pid 5150] close(4) = 0 [ 98.169258][ T5150] loop0: detected capacity change from 0 to 2048 [ 98.189050][ T5151] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5150] creat("./file2", 040) = 4 [pid 5150] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5150] exit_group(0) = ? [pid 5150] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5150, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./62", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./62", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./62/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./62/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./62/binderfs") = 0 [ 98.213979][ T5150] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 98.228278][ T5150] Remounting filesystem read-only [ 98.234353][ T5150] NILFS (loop0): error -5 truncating bmap (ino=16) [ 98.242963][ T5150] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 98.253202][ T5150] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 98.262532][ T5150] NILFS (loop0): error -5 truncating bmap (ino=16) [ 98.280030][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 98.287191][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 98.294746][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 98.304745][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 98.314448][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./62/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./62/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./62/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./62/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./62/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./62/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./62") = 0 mkdir("./63", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5152 ./strace-static-x86_64: Process 5152 attached [pid 5152] set_robust_list(0x555556375660, 24) = 0 [pid 5152] chdir("./63") = 0 [pid 5152] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5152] setpgid(0, 0) = 0 [pid 5152] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5152] write(3, "1000", 4) = 4 [pid 5152] close(3) = 0 [pid 5152] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5152] memfd_create("syzkaller", 0) = 3 [pid 5152] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 98.328562][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [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"..., 1048576) = 1048576 [pid 5152] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5152] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5152] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5152] close(3) = 0 [pid 5152] mkdir("./file0", 0777) = 0 [pid 5152] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5152] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5152] chdir("./file0") = 0 [pid 5152] ioctl(4, LOOP_CLR_FD) = 0 [pid 5152] close(4) = 0 [ 98.395570][ T5152] loop0: detected capacity change from 0 to 2048 [ 98.412408][ T5154] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 98.433106][ T5152] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5152] creat("./file2", 040) = 4 [pid 5152] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5152] exit_group(0) = ? [pid 5152] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5152, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./63", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./63", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./63/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./63/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./63/binderfs") = 0 [ 98.443446][ T5152] Remounting filesystem read-only [ 98.452040][ T5152] NILFS (loop0): error -5 truncating bmap (ino=16) [ 98.459496][ T5152] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 98.469885][ T5152] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 98.479471][ T5152] NILFS (loop0): error -5 truncating bmap (ino=16) [ 98.499900][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 98.506977][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 98.514591][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 98.523607][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 98.532587][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./63/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./63/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./63/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./63/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./63/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./63/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./63") = 0 mkdir("./64", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5155 ./strace-static-x86_64: Process 5155 attached [pid 5155] set_robust_list(0x555556375660, 24) = 0 [pid 5155] chdir("./64") = 0 [pid 5155] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5155] setpgid(0, 0) = 0 [pid 5155] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5155] write(3, "1000", 4) = 4 [pid 5155] close(3) = 0 [pid 5155] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5155] memfd_create("syzkaller", 0) = 3 [pid 5155] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 98.541934][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [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"..., 1048576) = 1048576 [pid 5155] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5155] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5155] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5155] close(3) = 0 [pid 5155] mkdir("./file0", 0777) = 0 [pid 5155] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5155] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5155] chdir("./file0") = 0 [pid 5155] ioctl(4, LOOP_CLR_FD) = 0 [pid 5155] close(4) = 0 [ 98.604966][ T5155] loop0: detected capacity change from 0 to 2048 [ 98.623187][ T5156] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 98.639877][ T5155] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5155] creat("./file2", 040) = 4 [pid 5155] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5155] exit_group(0) = ? [pid 5155] +++ exited with 0 +++ --- 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 */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./64", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./64", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./64/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./64/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./64/binderfs") = 0 [ 98.650790][ T5155] Remounting filesystem read-only [ 98.656768][ T5155] NILFS (loop0): error -5 truncating bmap (ino=16) [ 98.666518][ T5155] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 98.677420][ T5155] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 98.686792][ T5155] NILFS (loop0): error -5 truncating bmap (ino=16) [ 98.707747][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 98.715114][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 98.723004][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 98.733065][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 98.742316][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./64/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./64/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./64/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./64/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./64/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./64/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./64") = 0 mkdir("./65", 0777) = 0 [ 98.751722][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5157 ./strace-static-x86_64: Process 5157 attached [pid 5157] set_robust_list(0x555556375660, 24) = 0 [pid 5157] chdir("./65") = 0 [pid 5157] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5157] setpgid(0, 0) = 0 [pid 5157] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5157] write(3, "1000", 4) = 4 [pid 5157] close(3) = 0 [pid 5157] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5157] memfd_create("syzkaller", 0) = 3 [pid 5157] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5157] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5157] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5157] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5157] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5157] close(3) = 0 [pid 5157] mkdir("./file0", 0777) = 0 [pid 5157] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5157] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5157] chdir("./file0") = 0 [pid 5157] ioctl(4, LOOP_CLR_FD) = 0 [pid 5157] close(4) = 0 [pid 5157] creat("./file2", 040) = 4 [ 98.822389][ T5157] loop0: detected capacity change from 0 to 2048 [ 98.839054][ T5158] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 98.845446][ T5157] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 98.859807][ T5157] Remounting filesystem read-only [ 98.865496][ T5157] NILFS (loop0): error -5 truncating bmap (ino=16) [pid 5157] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5157] exit_group(0) = ? [pid 5157] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5157, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./65", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./65", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./65/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./65/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [ 98.873393][ T5157] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 98.883663][ T5157] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 98.893166][ T5157] NILFS (loop0): error -5 truncating bmap (ino=16) unlink("./65/binderfs") = 0 [ 98.973122][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 98.980111][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 98.987629][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 98.997071][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 99.006459][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./65/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./65/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./65/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./65/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./65/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./65/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./65") = 0 mkdir("./66", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5159 ./strace-static-x86_64: Process 5159 attached [pid 5159] set_robust_list(0x555556375660, 24) = 0 [pid 5159] chdir("./66") = 0 [pid 5159] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5159] setpgid(0, 0) = 0 [pid 5159] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5159] write(3, "1000", 4) = 4 [pid 5159] close(3) = 0 [pid 5159] symlink("/dev/binderfs", "./binderfs") = 0 [ 99.016621][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5159] memfd_create("syzkaller", 0) = 3 [pid 5159] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5159] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5159] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5159] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5159] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5159] close(3) = 0 [pid 5159] mkdir("./file0", 0777) = 0 [pid 5159] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5159] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5159] chdir("./file0") = 0 [pid 5159] ioctl(4, LOOP_CLR_FD) = 0 [pid 5159] close(4) = 0 [ 99.088204][ T5159] loop0: detected capacity change from 0 to 2048 [ 99.103849][ T5160] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 99.118198][ T5159] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5159] creat("./file2", 040) = 4 [pid 5159] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5159] exit_group(0) = ? [pid 5159] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5159, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- umount2("./66", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./66", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./66/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./66/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./66/binderfs") = 0 [ 99.135231][ T5159] Remounting filesystem read-only [ 99.140503][ T5159] NILFS (loop0): error -5 truncating bmap (ino=16) [ 99.148401][ T5159] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 99.158845][ T5159] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 99.168161][ T5159] NILFS (loop0): error -5 truncating bmap (ino=16) [ 99.187716][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 99.194742][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 99.202472][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 99.211382][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 99.221856][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./66/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./66/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./66/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./66/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./66/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./66/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./66") = 0 mkdir("./67", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5161 ./strace-static-x86_64: Process 5161 attached [ 99.231008][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5161] set_robust_list(0x555556375660, 24) = 0 [pid 5161] chdir("./67") = 0 [pid 5161] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5161] setpgid(0, 0) = 0 [pid 5161] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5161] write(3, "1000", 4) = 4 [pid 5161] close(3) = 0 [pid 5161] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5161] memfd_create("syzkaller", 0) = 3 [pid 5161] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [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"..., 1048576) = 1048576 [pid 5161] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5161] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5161] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5161] close(3) = 0 [pid 5161] mkdir("./file0", 0777) = 0 [pid 5161] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5161] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5161] chdir("./file0") = 0 [pid 5161] ioctl(4, LOOP_CLR_FD) = 0 [pid 5161] close(4) = 0 [ 99.315660][ T5161] loop0: detected capacity change from 0 to 2048 [ 99.332283][ T5162] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5161] creat("./file2", 040) = 4 [pid 5161] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5161] exit_group(0) = ? [pid 5161] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5161, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./67", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./67", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [ 99.357433][ T5161] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 99.368011][ T5161] Remounting filesystem read-only [ 99.373351][ T5161] NILFS (loop0): error -5 truncating bmap (ino=16) [ 99.381696][ T5161] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 99.391997][ T5161] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 99.401252][ T5161] NILFS (loop0): error -5 truncating bmap (ino=16) getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./67/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./67/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./67/binderfs") = 0 umount2("./67/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./67/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./67/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./67/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./67/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./67/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./67") = 0 mkdir("./68", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5163 ./strace-static-x86_64: Process 5163 attached [pid 5163] set_robust_list(0x555556375660, 24) = 0 [ 99.412062][ T9] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 99.419863][ T9] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 99.428799][ T9] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 99.438031][ T9] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 99.447110][ T9] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 99.456839][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5163] chdir("./68") = 0 [pid 5163] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5163] setpgid(0, 0) = 0 [pid 5163] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5163] write(3, "1000", 4) = 4 [pid 5163] close(3) = 0 [pid 5163] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5163] memfd_create("syzkaller", 0) = 3 [pid 5163] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [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"..., 1048576) = 1048576 [pid 5163] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5163] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5163] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5163] close(3) = 0 [pid 5163] mkdir("./file0", 0777) = 0 [pid 5163] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5163] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5163] chdir("./file0") = 0 [pid 5163] ioctl(4, LOOP_CLR_FD) = 0 [pid 5163] close(4) = 0 [ 99.537629][ T5163] loop0: detected capacity change from 0 to 2048 [ 99.553022][ T5164] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 99.578817][ T5163] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5163] creat("./file2", 040) = 4 [pid 5163] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5163] exit_group(0) = ? [pid 5163] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5163, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./68", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./68", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./68/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./68/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./68/binderfs") = 0 [ 99.589281][ T5163] Remounting filesystem read-only [ 99.596647][ T5163] NILFS (loop0): error -5 truncating bmap (ino=16) [ 99.604547][ T5163] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 99.614729][ T5163] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 99.625301][ T5163] NILFS (loop0): error -5 truncating bmap (ino=16) [ 99.640773][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 99.647905][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 99.655285][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 99.664306][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 99.673520][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./68/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./68/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./68/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./68/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./68/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./68/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./68") = 0 mkdir("./69", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5165 ./strace-static-x86_64: Process 5165 attached [pid 5165] set_robust_list(0x555556375660, 24) = 0 [pid 5165] chdir("./69") = 0 [pid 5165] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5165] setpgid(0, 0) = 0 [pid 5165] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5165] write(3, "1000", 4) = 4 [pid 5165] close(3) = 0 [pid 5165] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5165] memfd_create("syzkaller", 0) = 3 [pid 5165] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 99.682722][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [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"..., 1048576) = 1048576 [pid 5165] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5165] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5165] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5165] close(3) = 0 [pid 5165] mkdir("./file0", 0777) = 0 [pid 5165] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5165] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5165] chdir("./file0") = 0 [pid 5165] ioctl(4, LOOP_CLR_FD) = 0 [pid 5165] close(4) = 0 [pid 5165] creat("./file2", 040) = 4 [ 99.745063][ T5165] loop0: detected capacity change from 0 to 2048 [ 99.760052][ T5166] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 99.770829][ T5165] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 99.771982][ T5165] Remounting filesystem read-only [ 99.786265][ T5165] NILFS (loop0): error -5 truncating bmap (ino=16) [pid 5165] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5165] exit_group(0) = ? [pid 5165] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5165, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- umount2("./69", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./69", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./69/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./69/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./69/binderfs") = 0 [ 99.795432][ T5165] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 99.806374][ T5165] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 99.816452][ T5165] NILFS (loop0): error -5 truncating bmap (ino=16) [ 99.836878][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./69/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./69/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./69/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./69/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./69/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./69/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./69") = 0 mkdir("./70", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5167 ./strace-static-x86_64: Process 5167 attached [pid 5167] set_robust_list(0x555556375660, 24) = 0 [pid 5167] chdir("./70") = 0 [pid 5167] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5167] setpgid(0, 0) = 0 [pid 5167] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5167] write(3, "1000", 4) = 4 [ 99.844058][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 99.851361][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 99.860292][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 99.869463][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 99.878642][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5167] close(3) = 0 [pid 5167] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5167] memfd_create("syzkaller", 0) = 3 [pid 5167] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5167] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5167] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5167] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5167] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5167] close(3) = 0 [pid 5167] mkdir("./file0", 0777) = 0 [pid 5167] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5167] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5167] chdir("./file0") = 0 [pid 5167] ioctl(4, LOOP_CLR_FD) = 0 [pid 5167] close(4) = 0 [ 99.951282][ T5167] loop0: detected capacity change from 0 to 2048 [ 99.968098][ T5168] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 99.979443][ T5167] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 99.990556][ T5167] Remounting filesystem read-only [pid 5167] creat("./file2", 040) = 4 [pid 5167] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5167] exit_group(0) = ? [pid 5167] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5167, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./70", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./70", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./70/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./70/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./70/binderfs") = 0 [ 99.996574][ T5167] NILFS (loop0): error -5 truncating bmap (ino=16) [ 100.004614][ T5167] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 100.015190][ T5167] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 100.024697][ T5167] NILFS (loop0): error -5 truncating bmap (ino=16) [ 100.041081][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./70/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./70/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./70/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./70/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./70/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./70/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./70") = 0 mkdir("./71", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 [ 100.048736][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 100.056387][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 100.065683][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 100.074908][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 100.084644][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5169 attached , child_tidptr=0x555556375650) = 5169 [pid 5169] set_robust_list(0x555556375660, 24) = 0 [pid 5169] chdir("./71") = 0 [pid 5169] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5169] setpgid(0, 0) = 0 [pid 5169] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5169] write(3, "1000", 4) = 4 [pid 5169] close(3) = 0 [pid 5169] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5169] memfd_create("syzkaller", 0) = 3 [pid 5169] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5169] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5169] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5169] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5169] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5169] close(3) = 0 [pid 5169] mkdir("./file0", 0777) = 0 [pid 5169] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5169] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5169] chdir("./file0") = 0 [pid 5169] ioctl(4, LOOP_CLR_FD) = 0 [pid 5169] close(4) = 0 [ 100.170410][ T5169] loop0: detected capacity change from 0 to 2048 [ 100.187212][ T5170] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5169] creat("./file2", 040) = 4 [pid 5169] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5169] exit_group(0) = ? [pid 5169] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5169, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./71", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./71", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./71/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./71/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./71/binderfs") = 0 [ 100.214808][ T5169] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 100.225249][ T5169] Remounting filesystem read-only [ 100.230313][ T5169] NILFS (loop0): error -5 truncating bmap (ino=16) [ 100.238159][ T5169] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 100.249765][ T5169] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 100.259925][ T5169] NILFS (loop0): error -5 truncating bmap (ino=16) [ 100.274668][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 100.282108][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 100.289408][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 100.298502][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 100.307480][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./71/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./71/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./71/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./71/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./71/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./71/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./71") = 0 mkdir("./72", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5171 ./strace-static-x86_64: Process 5171 attached [ 100.317789][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5171] set_robust_list(0x555556375660, 24) = 0 [pid 5171] chdir("./72") = 0 [pid 5171] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5171] setpgid(0, 0) = 0 [pid 5171] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5171] write(3, "1000", 4) = 4 [pid 5171] close(3) = 0 [pid 5171] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5171] memfd_create("syzkaller", 0) = 3 [pid 5171] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5171] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5171] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5171] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5171] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5171] close(3) = 0 [pid 5171] mkdir("./file0", 0777) = 0 [pid 5171] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5171] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5171] chdir("./file0") = 0 [pid 5171] ioctl(4, LOOP_CLR_FD) = 0 [pid 5171] close(4) = 0 [ 100.396654][ T5171] loop0: detected capacity change from 0 to 2048 [ 100.412535][ T5172] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 100.432907][ T5171] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5171] creat("./file2", 040) = 4 [pid 5171] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5171] exit_group(0) = ? [pid 5171] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5171, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./72", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./72", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./72/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./72/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./72/binderfs") = 0 [ 100.443852][ T5171] Remounting filesystem read-only [ 100.448968][ T5171] NILFS (loop0): error -5 truncating bmap (ino=16) [ 100.457628][ T5171] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 100.468240][ T5171] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 100.477969][ T5171] NILFS (loop0): error -5 truncating bmap (ino=16) [ 100.495169][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 100.503645][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 100.511083][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 100.521015][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 100.530719][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./72/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./72/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./72/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./72/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./72/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./72/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./72") = 0 mkdir("./73", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5173 ./strace-static-x86_64: Process 5173 attached [pid 5173] set_robust_list(0x555556375660, 24) = 0 [pid 5173] chdir("./73") = 0 [pid 5173] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5173] setpgid(0, 0) = 0 [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 5173] memfd_create("syzkaller", 0) = 3 [pid 5173] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 100.540017][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [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"..., 1048576) = 1048576 [pid 5173] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5173] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5173] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5173] close(3) = 0 [pid 5173] mkdir("./file0", 0777) = 0 [pid 5173] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5173] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5173] chdir("./file0") = 0 [pid 5173] ioctl(4, LOOP_CLR_FD) = 0 [pid 5173] close(4) = 0 [ 100.606427][ T5173] loop0: detected capacity change from 0 to 2048 [ 100.626008][ T5174] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 100.632044][ T5173] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 100.649575][ T5173] Remounting filesystem read-only [pid 5173] creat("./file2", 040) = 4 [pid 5173] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5173] exit_group(0) = ? [pid 5173] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5173, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./73", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./73", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./73/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./73/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./73/binderfs") = 0 [ 100.664927][ T5173] NILFS (loop0): error -5 truncating bmap (ino=16) [ 100.673130][ T5173] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 100.683786][ T5173] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 100.696264][ T5173] NILFS (loop0): error -5 truncating bmap (ino=16) [ 100.717398][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 100.725606][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 100.734475][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 100.744009][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 100.752990][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./73/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./73/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./73/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./73/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./73/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./73/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./73") = 0 mkdir("./74", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5175 ./strace-static-x86_64: Process 5175 attached [pid 5175] set_robust_list(0x555556375660, 24) = 0 [pid 5175] chdir("./74") = 0 [pid 5175] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5175] setpgid(0, 0) = 0 [ 100.763027][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5175] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5175] write(3, "1000", 4) = 4 [pid 5175] close(3) = 0 [pid 5175] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5175] memfd_create("syzkaller", 0) = 3 [pid 5175] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [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"..., 1048576) = 1048576 [pid 5175] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5175] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5175] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5175] close(3) = 0 [pid 5175] mkdir("./file0", 0777) = 0 [pid 5175] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5175] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5175] chdir("./file0") = 0 [pid 5175] ioctl(4, LOOP_CLR_FD) = 0 [pid 5175] close(4) = 0 [ 100.835884][ T5175] loop0: detected capacity change from 0 to 2048 [ 100.853448][ T5176] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 100.869871][ T5175] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 100.880310][ T5175] Remounting filesystem read-only [pid 5175] creat("./file2", 040) = 4 [pid 5175] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5175] exit_group(0) = ? [pid 5175] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5175, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./74", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./74", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./74/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./74/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./74/binderfs") = 0 [ 100.886856][ T5175] NILFS (loop0): error -5 truncating bmap (ino=16) [ 100.898766][ T5175] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 100.911783][ T5175] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 100.922791][ T5175] NILFS (loop0): error -5 truncating bmap (ino=16) [ 100.945817][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 100.953216][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 100.960615][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 100.969950][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 100.979059][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./74/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./74/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./74/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./74/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./74/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./74/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./74") = 0 mkdir("./75", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5177 ./strace-static-x86_64: Process 5177 attached [pid 5177] set_robust_list(0x555556375660, 24) = 0 [ 100.989799][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5177] chdir("./75") = 0 [pid 5177] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5177] setpgid(0, 0) = 0 [pid 5177] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5177] write(3, "1000", 4) = 4 [pid 5177] close(3) = 0 [pid 5177] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5177] memfd_create("syzkaller", 0) = 3 [pid 5177] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [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"..., 1048576) = 1048576 [pid 5177] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5177] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5177] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5177] close(3) = 0 [pid 5177] mkdir("./file0", 0777) = 0 [pid 5177] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5177] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5177] chdir("./file0") = 0 [pid 5177] ioctl(4, LOOP_CLR_FD) = 0 [pid 5177] close(4) = 0 [ 101.072563][ T5177] loop0: detected capacity change from 0 to 2048 [ 101.088405][ T5178] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 101.097882][ T5177] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 101.112476][ T5177] Remounting filesystem read-only [pid 5177] creat("./file2", 040) = 4 [pid 5177] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5177] exit_group(0) = ? [pid 5177] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5177, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./75", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./75", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./75/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./75/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./75/binderfs") = 0 [ 101.118466][ T5177] NILFS (loop0): error -5 truncating bmap (ino=16) [ 101.127972][ T5177] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 101.138539][ T5177] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 101.147932][ T5177] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./75/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./75/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./75/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./75/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./75/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./75/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./75") = 0 mkdir("./76", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5179 ./strace-static-x86_64: Process 5179 attached [pid 5179] set_robust_list(0x555556375660, 24) = 0 [pid 5179] chdir("./76") = 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") = 0 [pid 5179] memfd_create("syzkaller", 0) = 3 [pid 5179] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 101.167062][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 101.174342][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 101.182004][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 101.191834][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 101.200801][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 101.210550][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [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"..., 1048576) = 1048576 [pid 5179] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5179] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5179] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5179] close(3) = 0 [pid 5179] mkdir("./file0", 0777) = 0 [pid 5179] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5179] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5179] chdir("./file0") = 0 [pid 5179] ioctl(4, LOOP_CLR_FD) = 0 [pid 5179] close(4) = 0 [ 101.278830][ T5179] loop0: detected capacity change from 0 to 2048 [ 101.296175][ T5180] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 101.306527][ T5179] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 101.318422][ T5179] Remounting filesystem read-only [pid 5179] creat("./file2", 040) = 4 [pid 5179] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5179] exit_group(0) = ? [pid 5179] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5179, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./76", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./76", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./76/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./76/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./76/binderfs") = 0 [ 101.324261][ T5179] NILFS (loop0): error -5 truncating bmap (ino=16) [ 101.334564][ T5179] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 101.345687][ T5179] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 101.355667][ T5179] NILFS (loop0): error -5 truncating bmap (ino=16) [ 101.371400][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./76/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./76/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./76/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./76/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./76/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./76/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./76") = 0 mkdir("./77", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5181 ./strace-static-x86_64: Process 5181 attached [pid 5181] set_robust_list(0x555556375660, 24) = 0 [pid 5181] chdir("./77") = 0 [pid 5181] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5181] setpgid(0, 0) = 0 [pid 5181] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5181] write(3, "1000", 4) = 4 [pid 5181] close(3) = 0 [pid 5181] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5181] memfd_create("syzkaller", 0) = 3 [ 101.378577][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 101.386095][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 101.396487][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 101.406121][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 101.416310][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5181] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5181] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5181] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5181] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5181] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5181] close(3) = 0 [pid 5181] mkdir("./file0", 0777) = 0 [pid 5181] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5181] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5181] chdir("./file0") = 0 [pid 5181] ioctl(4, LOOP_CLR_FD) = 0 [pid 5181] close(4) = 0 [ 101.476526][ T5181] loop0: detected capacity change from 0 to 2048 [ 101.493075][ T5182] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 101.513191][ T5181] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5181] creat("./file2", 040) = 4 [pid 5181] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5181] exit_group(0) = ? [pid 5181] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5181, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./77", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./77", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./77/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./77/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./77/binderfs") = 0 [ 101.524403][ T5181] Remounting filesystem read-only [ 101.532114][ T5181] NILFS (loop0): error -5 truncating bmap (ino=16) [ 101.541041][ T5181] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 101.551878][ T5181] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 101.563110][ T5181] NILFS (loop0): error -5 truncating bmap (ino=16) [ 101.584538][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 101.592142][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 101.599764][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 101.609281][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 101.618903][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./77/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./77/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./77/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./77/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./77/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./77/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./77") = 0 mkdir("./78", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5183 ./strace-static-x86_64: Process 5183 attached [pid 5183] set_robust_list(0x555556375660, 24) = 0 [pid 5183] chdir("./78") = 0 [pid 5183] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5183] setpgid(0, 0) = 0 [pid 5183] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5183] write(3, "1000", 4) = 4 [pid 5183] close(3) = 0 [pid 5183] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5183] memfd_create("syzkaller", 0) = 3 [ 101.628823][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5183] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5183] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5183] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5183] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5183] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5183] close(3) = 0 [pid 5183] mkdir("./file0", 0777) = 0 [pid 5183] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5183] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5183] chdir("./file0") = 0 [pid 5183] ioctl(4, LOOP_CLR_FD) = 0 [pid 5183] close(4) = 0 [ 101.703885][ T5183] loop0: detected capacity change from 0 to 2048 [ 101.724458][ T5184] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5183] creat("./file2", 040) = 4 [pid 5183] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5183] exit_group(0) = ? [pid 5183] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5183, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- umount2("./78", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./78", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./78/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./78/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./78/binderfs") = 0 [ 101.750630][ T5183] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 101.762274][ T5183] Remounting filesystem read-only [ 101.767842][ T5183] NILFS (loop0): error -5 truncating bmap (ino=16) [ 101.775756][ T5183] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 101.786162][ T5183] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 101.796339][ T5183] NILFS (loop0): error -5 truncating bmap (ino=16) [ 101.812279][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 101.819512][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 101.826972][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 101.836121][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 101.845170][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./78/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./78/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./78/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./78/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./78/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./78/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./78") = 0 mkdir("./79", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5185 ./strace-static-x86_64: Process 5185 attached [pid 5185] set_robust_list(0x555556375660, 24) = 0 [pid 5185] chdir("./79") = 0 [pid 5185] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [ 101.854365][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5185] setpgid(0, 0) = 0 [pid 5185] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5185] write(3, "1000", 4) = 4 [pid 5185] close(3) = 0 [pid 5185] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5185] memfd_create("syzkaller", 0) = 3 [pid 5185] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [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"..., 1048576) = 1048576 [pid 5185] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5185] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5185] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5185] close(3) = 0 [pid 5185] mkdir("./file0", 0777) = 0 [pid 5185] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5185] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5185] chdir("./file0") = 0 [pid 5185] ioctl(4, LOOP_CLR_FD) = 0 [pid 5185] close(4) = 0 [ 101.939537][ T5185] loop0: detected capacity change from 0 to 2048 [ 101.956732][ T5186] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 101.963512][ T5185] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 101.978377][ T5185] Remounting filesystem read-only [pid 5185] creat("./file2", 040) = 4 [pid 5185] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5185] exit_group(0) = ? [pid 5185] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5185, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./79", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./79", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./79/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./79/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./79/binderfs") = 0 [ 101.984229][ T5185] NILFS (loop0): error -5 truncating bmap (ino=16) [ 101.992408][ T5185] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 102.003356][ T5185] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 102.013383][ T5185] NILFS (loop0): error -5 truncating bmap (ino=16) [ 102.042644][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 102.049760][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 102.057842][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 102.066974][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 102.075925][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./79/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./79/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./79/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./79/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./79/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./79/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./79") = 0 mkdir("./80", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5187 ./strace-static-x86_64: Process 5187 attached [pid 5187] set_robust_list(0x555556375660, 24) = 0 [pid 5187] chdir("./80") = 0 [pid 5187] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5187] setpgid(0, 0) = 0 [pid 5187] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5187] write(3, "1000", 4) = 4 [pid 5187] close(3) = 0 [pid 5187] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5187] memfd_create("syzkaller", 0) = 3 [pid 5187] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 102.085409][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [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"..., 1048576) = 1048576 [pid 5187] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5187] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5187] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5187] close(3) = 0 [pid 5187] mkdir("./file0", 0777) = 0 [pid 5187] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5187] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5187] chdir("./file0") = 0 [pid 5187] ioctl(4, LOOP_CLR_FD) = 0 [pid 5187] close(4) = 0 [ 102.157717][ T5187] loop0: detected capacity change from 0 to 2048 [ 102.176391][ T5188] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5187] creat("./file2", 040) = 4 [pid 5187] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5187] exit_group(0) = ? [pid 5187] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5187, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./80", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./80", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./80/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./80/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./80/binderfs") = 0 [ 102.205304][ T5187] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 102.216578][ T5187] Remounting filesystem read-only [ 102.221921][ T5187] NILFS (loop0): error -5 truncating bmap (ino=16) [ 102.229660][ T5187] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 102.240908][ T5187] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 102.250339][ T5187] NILFS (loop0): error -5 truncating bmap (ino=16) [ 102.267838][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 102.274915][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 102.283080][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 102.292395][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 102.302822][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./80/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./80/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./80/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./80/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./80/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./80/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./80") = 0 mkdir("./81", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 102.312322][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5189 ./strace-static-x86_64: Process 5189 attached [pid 5189] set_robust_list(0x555556375660, 24) = 0 [pid 5189] chdir("./81") = 0 [pid 5189] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5189] setpgid(0, 0) = 0 [pid 5189] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5189] write(3, "1000", 4) = 4 [pid 5189] close(3) = 0 [pid 5189] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5189] memfd_create("syzkaller", 0) = 3 [pid 5189] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [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"..., 1048576) = 1048576 [pid 5189] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5189] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5189] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5189] close(3) = 0 [pid 5189] mkdir("./file0", 0777) = 0 [pid 5189] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5189] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5189] chdir("./file0") = 0 [pid 5189] ioctl(4, LOOP_CLR_FD) = 0 [pid 5189] close(4) = 0 [ 102.388508][ T5189] loop0: detected capacity change from 0 to 2048 [ 102.408292][ T5190] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5189] creat("./file2", 040) = 4 [ 102.434080][ T5189] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 102.450622][ T5189] Remounting filesystem read-only [ 102.456197][ T5189] NILFS (loop0): error -5 truncating bmap (ino=16) [ 102.464115][ T5189] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 102.474392][ T5189] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5189] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5189] exit_group(0) = ? [pid 5189] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5189, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- umount2("./81", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./81", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./81/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./81/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./81/binderfs") = 0 [ 102.483859][ T5189] NILFS (loop0): error -5 truncating bmap (ino=16) [ 102.502745][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 102.510224][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 102.521317][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./81/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./81/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./81/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./81/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./81/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./81/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./81") = 0 mkdir("./82", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5191 ./strace-static-x86_64: Process 5191 attached [pid 5191] set_robust_list(0x555556375660, 24) = 0 [pid 5191] chdir("./82") = 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 [ 102.530937][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 102.540191][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 102.550732][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5191] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5191] memfd_create("syzkaller", 0) = 3 [pid 5191] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [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"..., 1048576) = 1048576 [pid 5191] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5191] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5191] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5191] close(3) = 0 [pid 5191] mkdir("./file0", 0777) = 0 [pid 5191] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5191] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5191] chdir("./file0") = 0 [pid 5191] ioctl(4, LOOP_CLR_FD) = 0 [pid 5191] close(4) = 0 [ 102.626283][ T5191] loop0: detected capacity change from 0 to 2048 [ 102.643237][ T5192] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 102.666345][ T5191] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5191] creat("./file2", 040) = 4 [ 102.677031][ T5191] Remounting filesystem read-only [ 102.692215][ T5191] NILFS (loop0): error -5 truncating bmap (ino=16) [ 102.712337][ T5191] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [pid 5191] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5191] exit_group(0) = ? [pid 5191] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5191, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./82", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./82", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./82/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./82/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./82/binderfs") = 0 [ 102.722941][ T5191] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 102.732843][ T5191] NILFS (loop0): error -5 truncating bmap (ino=16) [ 102.753197][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 102.760445][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 102.768320][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./82/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./82/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./82/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./82/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./82/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./82/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./82") = 0 mkdir("./83", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5193 ./strace-static-x86_64: Process 5193 attached [pid 5193] set_robust_list(0x555556375660, 24) = 0 [pid 5193] chdir("./83") = 0 [pid 5193] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5193] setpgid(0, 0) = 0 [pid 5193] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5193] write(3, "1000", 4) = 4 [pid 5193] close(3) = 0 [pid 5193] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5193] memfd_create("syzkaller", 0) = 3 [pid 5193] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 102.777401][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 102.787010][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 102.796563][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5193] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5193] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5193] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5193] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5193] close(3) = 0 [pid 5193] mkdir("./file0", 0777) = 0 [pid 5193] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5193] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5193] chdir("./file0") = 0 [pid 5193] ioctl(4, LOOP_CLR_FD) = 0 [pid 5193] close(4) = 0 [ 102.876550][ T5193] loop0: detected capacity change from 0 to 2048 [ 102.895729][ T5194] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 102.902989][ T5193] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 102.919286][ T5193] Remounting filesystem read-only [pid 5193] creat("./file2", 040) = 4 [pid 5193] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5193] exit_group(0) = ? [pid 5193] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5193, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./83", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./83", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./83/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./83/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./83/binderfs") = 0 [ 102.924510][ T5193] NILFS (loop0): error -5 truncating bmap (ino=16) [ 102.933369][ T5193] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 102.943423][ T5193] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 102.952942][ T5193] NILFS (loop0): error -5 truncating bmap (ino=16) [ 102.973627][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 102.980846][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 102.989485][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 102.999550][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 103.009522][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./83/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./83/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./83/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./83/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./83/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./83/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./83") = 0 mkdir("./84", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5195 ./strace-static-x86_64: Process 5195 attached [pid 5195] set_robust_list(0x555556375660, 24) = 0 [pid 5195] chdir("./84") = 0 [pid 5195] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5195] setpgid(0, 0) = 0 [pid 5195] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5195] write(3, "1000", 4) = 4 [pid 5195] close(3) = 0 [pid 5195] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5195] memfd_create("syzkaller", 0) = 3 [pid 5195] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 103.019885][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5195] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5195] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5195] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5195] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5195] close(3) = 0 [pid 5195] mkdir("./file0", 0777) = 0 [pid 5195] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5195] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5195] chdir("./file0") = 0 [pid 5195] ioctl(4, LOOP_CLR_FD) = 0 [pid 5195] close(4) = 0 [ 103.085452][ T5195] loop0: detected capacity change from 0 to 2048 [ 103.105186][ T5196] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 103.115710][ T5195] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 103.126988][ T5195] Remounting filesystem read-only [pid 5195] creat("./file2", 040) = 4 [pid 5195] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5195] exit_group(0) = ? [pid 5195] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5195, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./84", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./84", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./84/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./84/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./84/binderfs") = 0 [ 103.136730][ T5195] NILFS (loop0): error -5 truncating bmap (ino=16) [ 103.146781][ T5195] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 103.159678][ T5195] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 103.171792][ T5195] NILFS (loop0): error -5 truncating bmap (ino=16) [ 103.191610][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 103.199526][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 103.207044][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 103.217853][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 103.227879][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./84/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./84/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./84/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./84/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./84/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./84/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./84") = 0 mkdir("./85", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5197 ./strace-static-x86_64: Process 5197 attached [pid 5197] set_robust_list(0x555556375660, 24) = 0 [pid 5197] chdir("./85") = 0 [pid 5197] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5197] setpgid(0, 0) = 0 [pid 5197] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5197] write(3, "1000", 4) = 4 [pid 5197] close(3) = 0 [pid 5197] symlink("/dev/binderfs", "./binderfs") = 0 [ 103.237419][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5197] memfd_create("syzkaller", 0) = 3 [pid 5197] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5197] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5197] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5197] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5197] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5197] close(3) = 0 [pid 5197] mkdir("./file0", 0777) = 0 [pid 5197] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5197] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5197] chdir("./file0") = 0 [pid 5197] ioctl(4, LOOP_CLR_FD) = 0 [pid 5197] close(4) = 0 [ 103.314464][ T5197] loop0: detected capacity change from 0 to 2048 [ 103.331285][ T5198] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 103.342236][ T5197] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 103.352834][ T5197] Remounting filesystem read-only [pid 5197] creat("./file2", 040) = 4 [pid 5197] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5197] exit_group(0) = ? [pid 5197] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5197, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./85", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./85", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./85/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./85/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./85/binderfs") = 0 [ 103.359015][ T5197] NILFS (loop0): error -5 truncating bmap (ino=16) [ 103.368418][ T5197] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 103.380683][ T5197] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 103.393756][ T5197] NILFS (loop0): error -5 truncating bmap (ino=16) [ 103.412750][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 103.421377][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 103.430410][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 103.440483][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 103.449599][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./85/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./85/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./85/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./85/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./85/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./85/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./85") = 0 mkdir("./86", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5199 ./strace-static-x86_64: Process 5199 attached [pid 5199] set_robust_list(0x555556375660, 24) = 0 [pid 5199] chdir("./86") = 0 [pid 5199] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5199] setpgid(0, 0) = 0 [pid 5199] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5199] write(3, "1000", 4) = 4 [pid 5199] close(3) = 0 [pid 5199] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5199] memfd_create("syzkaller", 0) = 3 [pid 5199] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 103.459921][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [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"..., 1048576) = 1048576 [pid 5199] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5199] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5199] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5199] close(3) = 0 [pid 5199] mkdir("./file0", 0777) = 0 [pid 5199] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5199] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5199] chdir("./file0") = 0 [pid 5199] ioctl(4, LOOP_CLR_FD) = 0 [pid 5199] close(4) = 0 [ 103.529882][ T5199] loop0: detected capacity change from 0 to 2048 [ 103.548157][ T5200] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 103.563360][ T5199] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5199] creat("./file2", 040) = 4 [ 103.573941][ T5199] Remounting filesystem read-only [ 103.582729][ T5199] NILFS (loop0): error -5 truncating bmap (ino=16) [ 103.601812][ T5199] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 103.614310][ T5199] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5199] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5199] exit_group(0) = ? [pid 5199] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5199, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./86", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./86", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./86/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./86/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./86/binderfs") = 0 [ 103.625548][ T5199] NILFS (loop0): error -5 truncating bmap (ino=16) [ 103.645046][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 103.653957][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 103.666312][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 103.676091][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 103.685240][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 103.696858][ T26] kauditd_printk_skb: 7 callbacks suppressed [ 103.696874][ T26] audit: type=1400 audit(1691344896.304:100): avc: denied { rename } for pid=4450 comm="syslogd" name="messages" dev="tmpfs" ino=3 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=file permissive=1 [ 103.701932][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [ 103.704818][ T26] audit: type=1400 audit(1691344896.304:101): avc: denied { unlink } for pid=4450 comm="syslogd" name="messages.0" dev="tmpfs" ino=2 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=file permissive=1 umount2("./86/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./86/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./86/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./86/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./86/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./86/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./86") = 0 mkdir("./87", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5201 ./strace-static-x86_64: Process 5201 attached [pid 5201] set_robust_list(0x555556375660, 24) = 0 [pid 5201] chdir("./87") = 0 [pid 5201] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5201] setpgid(0, 0) = 0 [pid 5201] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5201] write(3, "1000", 4) = 4 [pid 5201] close(3) = 0 [pid 5201] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5201] memfd_create("syzkaller", 0) = 3 [pid 5201] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [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"..., 1048576) = 1048576 [pid 5201] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5201] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 103.766438][ T26] audit: type=1400 audit(1691344896.304:102): avc: denied { create } for pid=4450 comm="syslogd" name="messages" scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=file permissive=1 [pid 5201] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5201] close(3) = 0 [pid 5201] mkdir("./file0", 0777) = 0 [pid 5201] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5201] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5201] chdir("./file0") = 0 [pid 5201] ioctl(4, LOOP_CLR_FD) = 0 [pid 5201] close(4) = 0 [ 103.840832][ T5201] loop0: detected capacity change from 0 to 2048 [ 103.858477][ T5202] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 103.863407][ T5201] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 103.879625][ T5201] Remounting filesystem read-only [pid 5201] creat("./file2", 040) = 4 [pid 5201] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5201] exit_group(0) = ? [pid 5201] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5201, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- umount2("./87", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./87", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./87/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./87/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./87/binderfs") = 0 [ 103.890633][ T5201] NILFS (loop0): error -5 truncating bmap (ino=16) [ 103.908754][ T5201] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 103.919594][ T5201] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 103.930144][ T5201] NILFS (loop0): error -5 truncating bmap (ino=16) [ 103.946399][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 103.953638][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 103.960965][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 103.970237][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 103.979356][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./87/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./87/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./87/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./87/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./87/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./87/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 [ 103.988635][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer rmdir("./87") = 0 mkdir("./88", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5203 ./strace-static-x86_64: Process 5203 attached [pid 5203] set_robust_list(0x555556375660, 24) = 0 [pid 5203] chdir("./88") = 0 [pid 5203] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5203] setpgid(0, 0) = 0 [pid 5203] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5203] write(3, "1000", 4) = 4 [pid 5203] close(3) = 0 [pid 5203] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5203] memfd_create("syzkaller", 0) = 3 [pid 5203] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5203] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5203] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5203] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5203] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5203] close(3) = 0 [pid 5203] mkdir("./file0", 0777) = 0 [pid 5203] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5203] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5203] chdir("./file0") = 0 [pid 5203] ioctl(4, LOOP_CLR_FD) = 0 [pid 5203] close(4) = 0 [ 104.096300][ T5203] loop0: detected capacity change from 0 to 2048 [ 104.124461][ T5204] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 104.134860][ T5203] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5203] creat("./file2", 040) = 4 [ 104.160687][ T5203] Remounting filesystem read-only [ 104.177586][ T5203] NILFS (loop0): error -5 truncating bmap (ino=16) [ 104.189283][ T5203] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [pid 5203] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5203] exit_group(0) = ? [pid 5203] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5203, si_uid=0, si_status=0, si_utime=0, si_stime=12 /* 0.12 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./88", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./88", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./88/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./88/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./88/binderfs") = 0 [ 104.202326][ T5203] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 104.212591][ T5203] NILFS (loop0): error -5 truncating bmap (ino=16) [ 104.247851][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./88/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./88/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./88/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./88/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./88/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./88/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./88") = 0 [ 104.255524][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 104.265853][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 104.277715][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 104.289586][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 104.300466][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer mkdir("./89", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5205 attached , child_tidptr=0x555556375650) = 5205 [pid 5205] set_robust_list(0x555556375660, 24) = 0 [pid 5205] chdir("./89") = 0 [pid 5205] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5205] setpgid(0, 0) = 0 [pid 5205] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5205] write(3, "1000", 4) = 4 [pid 5205] close(3) = 0 [pid 5205] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5205] memfd_create("syzkaller", 0) = 3 [pid 5205] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5205] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5205] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5205] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5205] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5205] close(3) = 0 [pid 5205] mkdir("./file0", 0777) = 0 [pid 5205] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5205] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5205] chdir("./file0") = 0 [pid 5205] ioctl(4, LOOP_CLR_FD) = 0 [pid 5205] close(4) = 0 [ 104.385971][ T5205] loop0: detected capacity change from 0 to 2048 [ 104.403294][ T5206] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5205] creat("./file2", 040) = 4 [ 104.427295][ T5205] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 104.447857][ T5205] Remounting filesystem read-only [ 104.453180][ T5205] NILFS (loop0): error -5 truncating bmap (ino=16) [ 104.460748][ T5205] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 104.472407][ T5205] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5205] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5205] exit_group(0) = ? [pid 5205] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5205, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./89", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./89", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./89/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./89/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./89/binderfs") = 0 [ 104.481793][ T5205] NILFS (loop0): error -5 truncating bmap (ino=16) [ 104.498208][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 104.505947][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 104.513435][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 104.522573][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./89/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./89/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./89/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./89/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./89/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./89/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./89") = 0 mkdir("./90", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5207 ./strace-static-x86_64: Process 5207 attached [pid 5207] set_robust_list(0x555556375660, 24) = 0 [pid 5207] chdir("./90") = 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 [ 104.532858][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 104.543654][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [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) = 0x7f093b4c4000 [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"..., 1048576) = 1048576 [pid 5207] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5207] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5207] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5207] close(3) = 0 [pid 5207] mkdir("./file0", 0777) = 0 [pid 5207] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5207] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5207] chdir("./file0") = 0 [pid 5207] ioctl(4, LOOP_CLR_FD) = 0 [pid 5207] close(4) = 0 [ 104.630665][ T5207] loop0: detected capacity change from 0 to 2048 [ 104.649204][ T5208] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5207] creat("./file2", 040) = 4 [pid 5207] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5207] exit_group(0) = ? [pid 5207] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5207, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./90", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./90", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./90/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./90/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./90/binderfs") = 0 [ 104.674091][ T5207] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 104.686250][ T5207] Remounting filesystem read-only [ 104.693994][ T5207] NILFS (loop0): error -5 truncating bmap (ino=16) [ 104.702662][ T5207] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 104.712848][ T5207] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 104.722713][ T5207] NILFS (loop0): error -5 truncating bmap (ino=16) [ 104.743252][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 104.751297][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 104.760531][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 104.769960][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 104.779263][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./90/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./90/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./90/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./90/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./90/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./90/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./90") = 0 mkdir("./91", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5209 ./strace-static-x86_64: Process 5209 attached [pid 5209] set_robust_list(0x555556375660, 24) = 0 [pid 5209] chdir("./91") = 0 [pid 5209] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5209] setpgid(0, 0) = 0 [pid 5209] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5209] write(3, "1000", 4) = 4 [pid 5209] close(3) = 0 [pid 5209] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5209] memfd_create("syzkaller", 0) = 3 [pid 5209] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 104.788863][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5209] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5209] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5209] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5209] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5209] close(3) = 0 [pid 5209] mkdir("./file0", 0777) = 0 [pid 5209] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5209] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5209] chdir("./file0") = 0 [pid 5209] ioctl(4, LOOP_CLR_FD) = 0 [pid 5209] close(4) = 0 [ 104.860315][ T5209] loop0: detected capacity change from 0 to 2048 [ 104.877501][ T5210] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5209] creat("./file2", 040) = 4 [pid 5209] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5209] exit_group(0) = ? [pid 5209] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5209, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./91", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./91", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./91/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./91/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./91/binderfs") = 0 [ 104.905541][ T5209] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 104.918270][ T5209] Remounting filesystem read-only [ 104.924003][ T5209] NILFS (loop0): error -5 truncating bmap (ino=16) [ 104.932496][ T5209] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 104.942871][ T5209] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 104.952416][ T5209] NILFS (loop0): error -5 truncating bmap (ino=16) [ 104.971748][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 104.978955][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 104.987716][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 104.999229][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 105.009356][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./91/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./91/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./91/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./91/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./91/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./91/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./91") = 0 mkdir("./92", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5211 ./strace-static-x86_64: Process 5211 attached [pid 5211] set_robust_list(0x555556375660, 24) = 0 [pid 5211] chdir("./92") = 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 [ 105.019339][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5211] write(3, "1000", 4) = 4 [pid 5211] close(3) = 0 [pid 5211] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5211] memfd_create("syzkaller", 0) = 3 [pid 5211] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [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"..., 1048576) = 1048576 [pid 5211] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5211] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5211] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5211] close(3) = 0 [pid 5211] mkdir("./file0", 0777) = 0 [ 105.109824][ T5211] loop0: detected capacity change from 0 to 2048 [ 105.138049][ T5212] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5211] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5211] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5211] chdir("./file0") = 0 [pid 5211] ioctl(4, LOOP_CLR_FD) = 0 [pid 5211] close(4) = 0 [pid 5211] creat("./file2", 040) = 4 [pid 5211] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5211] exit_group(0) = ? [pid 5211] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5211, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./92", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./92", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./92/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./92/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./92/binderfs") = 0 [ 105.152950][ T5211] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 105.165746][ T5211] Remounting filesystem read-only [ 105.172139][ T5211] NILFS (loop0): error -5 truncating bmap (ino=16) [ 105.180691][ T5211] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 105.193608][ T5211] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 105.203744][ T5211] NILFS (loop0): error -5 truncating bmap (ino=16) [ 105.220170][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 105.227248][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 105.234698][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 105.244378][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 105.254415][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./92/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./92/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./92/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./92/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./92/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./92/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./92") = 0 mkdir("./93", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5213 ./strace-static-x86_64: Process 5213 attached [pid 5213] set_robust_list(0x555556375660, 24) = 0 [ 105.264190][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5213] chdir("./93") = 0 [pid 5213] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5213] setpgid(0, 0) = 0 [pid 5213] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5213] write(3, "1000", 4) = 4 [pid 5213] close(3) = 0 [pid 5213] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5213] memfd_create("syzkaller", 0) = 3 [pid 5213] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5213] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5213] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5213] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5213] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5213] close(3) = 0 [pid 5213] mkdir("./file0", 0777) = 0 [pid 5213] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5213] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5213] chdir("./file0") = 0 [pid 5213] ioctl(4, LOOP_CLR_FD) = 0 [pid 5213] close(4) = 0 [ 105.343816][ T5213] loop0: detected capacity change from 0 to 2048 [ 105.362111][ T5214] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 105.379065][ T5213] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5213] creat("./file2", 040) = 4 [pid 5213] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5213] exit_group(0) = ? [pid 5213] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5213, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./93", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./93", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./93/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./93/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./93/binderfs") = 0 [ 105.390102][ T5213] Remounting filesystem read-only [ 105.395733][ T5213] NILFS (loop0): error -5 truncating bmap (ino=16) [ 105.404613][ T5213] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 105.416269][ T5213] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 105.426044][ T5213] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./93/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./93/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./93/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./93/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./93/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./93/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./93") = 0 mkdir("./94", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5215 ./strace-static-x86_64: Process 5215 attached [pid 5215] set_robust_list(0x555556375660, 24) = 0 [pid 5215] chdir("./94") = 0 [pid 5215] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5215] setpgid(0, 0) = 0 [pid 5215] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5215] write(3, "1000", 4) = 4 [pid 5215] close(3) = 0 [pid 5215] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5215] memfd_create("syzkaller", 0) = 3 [ 105.441289][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 105.448641][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 105.456369][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 105.465789][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 105.475579][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 105.485082][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5215] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [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"..., 1048576) = 1048576 [pid 5215] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5215] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5215] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5215] close(3) = 0 [pid 5215] mkdir("./file0", 0777) = 0 [pid 5215] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5215] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5215] chdir("./file0") = 0 [pid 5215] ioctl(4, LOOP_CLR_FD) = 0 [pid 5215] close(4) = 0 [ 105.546961][ T5215] loop0: detected capacity change from 0 to 2048 [ 105.563601][ T5216] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 105.568570][ T5215] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 105.587412][ T5215] Remounting filesystem read-only [pid 5215] creat("./file2", 040) = 4 [pid 5215] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5215] exit_group(0) = ? [pid 5215] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5215, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./94", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./94", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./94/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./94/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./94/binderfs") = 0 [ 105.593993][ T5215] NILFS (loop0): error -5 truncating bmap (ino=16) [ 105.602151][ T5215] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 105.613031][ T5215] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 105.623812][ T5215] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./94/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./94/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./94/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./94/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./94/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./94/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./94") = 0 mkdir("./95", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 105.641326][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 105.648666][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 105.656044][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 105.664975][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 105.674265][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 105.685163][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5217 ./strace-static-x86_64: Process 5217 attached [pid 5217] set_robust_list(0x555556375660, 24) = 0 [pid 5217] chdir("./95") = 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) = 3 [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) = 0x7f093b4c4000 [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"..., 1048576) = 1048576 [pid 5217] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5217] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5217] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5217] close(3) = 0 [pid 5217] mkdir("./file0", 0777) = 0 [pid 5217] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5217] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5217] chdir("./file0") = 0 [pid 5217] ioctl(4, LOOP_CLR_FD) = 0 [pid 5217] close(4) = 0 [ 105.757445][ T5217] loop0: detected capacity change from 0 to 2048 [ 105.773727][ T5218] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 105.794345][ T5217] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5217] creat("./file2", 040) = 4 [pid 5217] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5217] exit_group(0) = ? [pid 5217] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5217, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./95", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./95", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./95/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./95/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./95/binderfs") = 0 [ 105.806623][ T5217] Remounting filesystem read-only [ 105.812515][ T5217] NILFS (loop0): error -5 truncating bmap (ino=16) [ 105.820910][ T5217] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 105.831300][ T5217] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 105.841057][ T5217] NILFS (loop0): error -5 truncating bmap (ino=16) [ 105.862713][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 105.869866][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 105.877294][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 105.886885][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 105.897232][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./95/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./95/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./95/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./95/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./95/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./95/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./95") = 0 mkdir("./96", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5219 ./strace-static-x86_64: Process 5219 attached [pid 5219] set_robust_list(0x555556375660, 24) = 0 [pid 5219] chdir("./96") = 0 [pid 5219] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5219] setpgid(0, 0) = 0 [pid 5219] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5219] write(3, "1000", 4) = 4 [pid 5219] close(3) = 0 [pid 5219] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5219] memfd_create("syzkaller", 0) = 3 [pid 5219] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 105.906548][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5219] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5219] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5219] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5219] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5219] close(3) = 0 [pid 5219] mkdir("./file0", 0777) = 0 [pid 5219] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5219] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5219] chdir("./file0") = 0 [pid 5219] ioctl(4, LOOP_CLR_FD) = 0 [pid 5219] close(4) = 0 [ 105.972779][ T5219] loop0: detected capacity change from 0 to 2048 [ 105.988096][ T5220] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5219] creat("./file2", 040) = 4 [pid 5219] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5219] exit_group(0) = ? [pid 5219] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5219, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./96", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./96", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./96/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./96/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./96/binderfs") = 0 [ 106.014715][ T5219] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 106.026272][ T5219] Remounting filesystem read-only [ 106.031920][ T5219] NILFS (loop0): error -5 truncating bmap (ino=16) [ 106.040989][ T5219] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 106.051403][ T5219] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 106.060773][ T5219] NILFS (loop0): error -5 truncating bmap (ino=16) [ 106.078679][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 106.086443][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 106.093824][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 106.103036][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 106.112076][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./96/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./96/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./96/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./96/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./96/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./96/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./96") = 0 mkdir("./97", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5221 ./strace-static-x86_64: Process 5221 attached [pid 5221] set_robust_list(0x555556375660, 24) = 0 [pid 5221] chdir("./97") = 0 [pid 5221] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5221] setpgid(0, 0) = 0 [pid 5221] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5221] write(3, "1000", 4) = 4 [pid 5221] close(3) = 0 [ 106.121279][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5221] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5221] memfd_create("syzkaller", 0) = 3 [pid 5221] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5221] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5221] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5221] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5221] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5221] close(3) = 0 [pid 5221] mkdir("./file0", 0777) = 0 [pid 5221] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5221] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5221] chdir("./file0") = 0 [pid 5221] ioctl(4, LOOP_CLR_FD) = 0 [pid 5221] close(4) = 0 [ 106.202071][ T5221] loop0: detected capacity change from 0 to 2048 [ 106.218335][ T5222] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 106.237038][ T5221] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5221] creat("./file2", 040) = 4 [pid 5221] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5221] exit_group(0) = ? [pid 5221] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5221, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./97", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./97", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./97/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./97/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./97/binderfs") = 0 [ 106.247879][ T5221] Remounting filesystem read-only [ 106.255029][ T5221] NILFS (loop0): error -5 truncating bmap (ino=16) [ 106.264288][ T5221] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 106.274735][ T5221] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 106.284455][ T5221] NILFS (loop0): error -5 truncating bmap (ino=16) [ 106.302602][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 106.309802][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 106.319745][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 106.330205][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 106.339167][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./97/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./97/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./97/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./97/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./97/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./97/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./97") = 0 mkdir("./98", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5223 ./strace-static-x86_64: Process 5223 attached [pid 5223] set_robust_list(0x555556375660, 24) = 0 [pid 5223] chdir("./98") = 0 [pid 5223] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5223] setpgid(0, 0) = 0 [ 106.348310][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5223] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5223] write(3, "1000", 4) = 4 [pid 5223] close(3) = 0 [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) = 0x7f093b4c4000 [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"..., 1048576) = 1048576 [pid 5223] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5223] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5223] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5223] close(3) = 0 [pid 5223] mkdir("./file0", 0777) = 0 [pid 5223] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5223] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5223] chdir("./file0") = 0 [pid 5223] ioctl(4, LOOP_CLR_FD) = 0 [pid 5223] close(4) = 0 [ 106.429565][ T5223] loop0: detected capacity change from 0 to 2048 [ 106.446307][ T5224] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 106.458196][ T5223] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 106.468576][ T5223] Remounting filesystem read-only [pid 5223] creat("./file2", 040) = 4 [pid 5223] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5223] exit_group(0) = ? [pid 5223] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5223, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./98", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./98", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./98/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./98/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./98/binderfs") = 0 [ 106.474313][ T5223] NILFS (loop0): error -5 truncating bmap (ino=16) [ 106.483103][ T5223] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 106.496649][ T5223] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 106.507759][ T5223] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./98/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./98/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./98/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./98/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./98/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./98/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./98") = 0 mkdir("./99", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5225 ./strace-static-x86_64: Process 5225 attached [pid 5225] set_robust_list(0x555556375660, 24) = 0 [ 106.528547][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 106.535594][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 106.543229][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 106.552365][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 106.561277][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 106.570524][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5225] chdir("./99") = 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 5225] write(3, "1000", 4) = 4 [pid 5225] close(3) = 0 [pid 5225] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5225] memfd_create("syzkaller", 0) = 3 [pid 5225] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [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"..., 1048576) = 1048576 [pid 5225] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5225] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5225] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5225] close(3) = 0 [pid 5225] mkdir("./file0", 0777) = 0 [pid 5225] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5225] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5225] chdir("./file0") = 0 [pid 5225] ioctl(4, LOOP_CLR_FD) = 0 [pid 5225] close(4) = 0 [ 106.635890][ T5225] loop0: detected capacity change from 0 to 2048 [ 106.652678][ T5226] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 106.674298][ T5225] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5225] creat("./file2", 040) = 4 [pid 5225] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5225] exit_group(0) = ? [pid 5225] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5225, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./99", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./99", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./99/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./99/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./99/binderfs") = 0 [ 106.684757][ T5225] Remounting filesystem read-only [ 106.691243][ T5225] NILFS (loop0): error -5 truncating bmap (ino=16) [ 106.699992][ T5225] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 106.710701][ T5225] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 106.722702][ T5225] NILFS (loop0): error -5 truncating bmap (ino=16) [ 106.739511][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 106.747021][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 106.754823][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 106.764138][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 106.778736][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./99/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./99/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./99/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./99/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./99/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./99/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./99") = 0 mkdir("./100", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5227 ./strace-static-x86_64: Process 5227 attached [pid 5227] set_robust_list(0x555556375660, 24) = 0 [pid 5227] chdir("./100") = 0 [pid 5227] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5227] setpgid(0, 0) = 0 [pid 5227] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5227] write(3, "1000", 4) = 4 [pid 5227] close(3) = 0 [pid 5227] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5227] memfd_create("syzkaller", 0) = 3 [pid 5227] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5227] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5227] munmap(0x7f093b4c4000, 1048576) = 0 [ 106.789432][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5227] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5227] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5227] close(3) = 0 [pid 5227] mkdir("./file0", 0777) = 0 [pid 5227] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5227] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5227] chdir("./file0") = 0 [pid 5227] ioctl(4, LOOP_CLR_FD) = 0 [pid 5227] close(4) = 0 [ 106.852346][ T5227] loop0: detected capacity change from 0 to 2048 [ 106.870082][ T5228] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 106.879169][ T5227] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 106.891330][ T5227] Remounting filesystem read-only [pid 5227] creat("./file2", 040) = 4 [pid 5227] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5227] exit_group(0) = ? [pid 5227] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5227, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./100", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./100", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./100/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./100/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./100/binderfs") = 0 [ 106.901766][ T5227] NILFS (loop0): error -5 truncating bmap (ino=16) [ 106.910024][ T5227] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 106.921910][ T5227] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 106.931902][ T5227] NILFS (loop0): error -5 truncating bmap (ino=16) [ 106.950359][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 106.958014][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 106.965846][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 106.974879][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 106.984085][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./100/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./100/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./100/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./100/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./100/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./100/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./100") = 0 mkdir("./101", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5229 ./strace-static-x86_64: Process 5229 attached [pid 5229] set_robust_list(0x555556375660, 24) = 0 [pid 5229] chdir("./101") = 0 [ 106.994538][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5229] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5229] setpgid(0, 0) = 0 [pid 5229] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5229] write(3, "1000", 4) = 4 [pid 5229] close(3) = 0 [pid 5229] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5229] memfd_create("syzkaller", 0) = 3 [pid 5229] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5229] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5229] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5229] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5229] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5229] close(3) = 0 [pid 5229] mkdir("./file0", 0777) = 0 [pid 5229] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5229] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5229] chdir("./file0") = 0 [pid 5229] ioctl(4, LOOP_CLR_FD) = 0 [pid 5229] close(4) = 0 [ 107.069802][ T5229] loop0: detected capacity change from 0 to 2048 [ 107.085104][ T5230] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 107.101876][ T5229] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 107.112384][ T5229] Remounting filesystem read-only [pid 5229] creat("./file2", 040) = 4 [pid 5229] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5229] exit_group(0) = ? [pid 5229] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5229, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- umount2("./101", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./101", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./101/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./101/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./101/binderfs") = 0 [ 107.131754][ T5229] NILFS (loop0): error -5 truncating bmap (ino=16) [ 107.141035][ T5229] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 107.151248][ T5229] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 107.161364][ T5229] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./101/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./101/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./101/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./101/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./101/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./101/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./101") = 0 mkdir("./102", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5231 [ 107.176817][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 107.184054][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 107.191368][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 107.201206][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 107.210210][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 107.219905][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer ./strace-static-x86_64: Process 5231 attached [pid 5231] set_robust_list(0x555556375660, 24) = 0 [pid 5231] chdir("./102") = 0 [pid 5231] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5231] setpgid(0, 0) = 0 [pid 5231] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5231] write(3, "1000", 4) = 4 [pid 5231] close(3) = 0 [pid 5231] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5231] memfd_create("syzkaller", 0) = 3 [pid 5231] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [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"..., 1048576) = 1048576 [pid 5231] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5231] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5231] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5231] close(3) = 0 [pid 5231] mkdir("./file0", 0777) = 0 [pid 5231] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5231] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5231] chdir("./file0") = 0 [pid 5231] ioctl(4, LOOP_CLR_FD) = 0 [pid 5231] close(4) = 0 [ 107.302697][ T5231] loop0: detected capacity change from 0 to 2048 [ 107.321143][ T5232] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 107.337061][ T5231] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 107.347602][ T5231] Remounting filesystem read-only [pid 5231] creat("./file2", 040) = 4 [pid 5231] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5231] exit_group(0) = ? [pid 5231] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5231, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./102", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./102", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./102/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./102/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./102/binderfs") = 0 [ 107.353187][ T5231] NILFS (loop0): error -5 truncating bmap (ino=16) [ 107.361327][ T5231] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 107.372106][ T5231] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 107.381622][ T5231] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./102/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./102/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./102/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./102/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./102/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./102/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./102") = 0 mkdir("./103", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5233 ./strace-static-x86_64: Process 5233 attached [pid 5233] set_robust_list(0x555556375660, 24) = 0 [pid 5233] chdir("./103") = 0 [pid 5233] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [ 107.396995][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 107.404236][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 107.412188][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 107.421058][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 107.430414][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 107.440136][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5233] setpgid(0, 0) = 0 [pid 5233] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5233] write(3, "1000", 4) = 4 [pid 5233] close(3) = 0 [pid 5233] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5233] memfd_create("syzkaller", 0) = 3 [pid 5233] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [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"..., 1048576) = 1048576 [pid 5233] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5233] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5233] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5233] close(3) = 0 [pid 5233] mkdir("./file0", 0777) = 0 [pid 5233] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5233] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5233] chdir("./file0") = 0 [pid 5233] ioctl(4, LOOP_CLR_FD) = 0 [pid 5233] close(4) = 0 [ 107.514961][ T5233] loop0: detected capacity change from 0 to 2048 [ 107.531689][ T5234] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 107.553303][ T5233] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5233] creat("./file2", 040) = 4 [pid 5233] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5233] exit_group(0) = ? [pid 5233] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5233, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./103", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./103", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./103/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./103/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./103/binderfs") = 0 [ 107.565372][ T5233] Remounting filesystem read-only [ 107.572140][ T5233] NILFS (loop0): error -5 truncating bmap (ino=16) [ 107.581237][ T5233] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 107.593304][ T5233] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 107.602764][ T5233] NILFS (loop0): error -5 truncating bmap (ino=16) [ 107.622044][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 107.629316][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 107.637254][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 107.646304][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 107.655289][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./103/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./103/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./103/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./103/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./103/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./103/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./103") = 0 mkdir("./104", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5235 ./strace-static-x86_64: Process 5235 attached [pid 5235] set_robust_list(0x555556375660, 24) = 0 [pid 5235] chdir("./104") = 0 [pid 5235] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5235] setpgid(0, 0) = 0 [pid 5235] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5235] write(3, "1000", 4) = 4 [pid 5235] close(3) = 0 [pid 5235] symlink("/dev/binderfs", "./binderfs") = 0 [ 107.664674][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5235] memfd_create("syzkaller", 0) = 3 [pid 5235] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5235] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5235] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5235] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5235] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5235] close(3) = 0 [pid 5235] mkdir("./file0", 0777) = 0 [pid 5235] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5235] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5235] chdir("./file0") = 0 [pid 5235] ioctl(4, LOOP_CLR_FD) = 0 [pid 5235] close(4) = 0 [ 107.737801][ T5235] loop0: detected capacity change from 0 to 2048 [ 107.753829][ T5236] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5235] creat("./file2", 040) = 4 [pid 5235] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5235] exit_group(0) = ? [pid 5235] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5235, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- umount2("./104", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./104", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./104/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./104/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./104/binderfs") = 0 [ 107.785220][ T5235] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 107.795799][ T5235] Remounting filesystem read-only [ 107.801323][ T5235] NILFS (loop0): error -5 truncating bmap (ino=16) [ 107.810531][ T5235] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 107.821049][ T5235] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 107.831100][ T5235] NILFS (loop0): error -5 truncating bmap (ino=16) [ 107.852563][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 107.860116][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 107.867607][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 107.876995][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 107.886320][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./104/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./104/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./104/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./104/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./104/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./104/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./104") = 0 mkdir("./105", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5237 ./strace-static-x86_64: Process 5237 attached [pid 5237] set_robust_list(0x555556375660, 24) = 0 [pid 5237] chdir("./105") = 0 [ 107.895856][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5237] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5237] setpgid(0, 0) = 0 [pid 5237] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5237] write(3, "1000", 4) = 4 [pid 5237] close(3) = 0 [pid 5237] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5237] memfd_create("syzkaller", 0) = 3 [pid 5237] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5237] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5237] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5237] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5237] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5237] close(3) = 0 [pid 5237] mkdir("./file0", 0777) = 0 [pid 5237] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5237] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5237] chdir("./file0") = 0 [pid 5237] ioctl(4, LOOP_CLR_FD) = 0 [pid 5237] close(4) = 0 [ 107.979675][ T5237] loop0: detected capacity change from 0 to 2048 [ 107.995667][ T5238] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5237] creat("./file2", 040) = 4 [pid 5237] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5237] exit_group(0) = ? [pid 5237] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5237, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./105", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./105", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./105/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./105/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./105/binderfs") = 0 [ 108.024140][ T5237] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 108.034614][ T5237] Remounting filesystem read-only [ 108.040159][ T5237] NILFS (loop0): error -5 truncating bmap (ino=16) [ 108.047681][ T5237] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 108.058290][ T5237] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 108.067773][ T5237] NILFS (loop0): error -5 truncating bmap (ino=16) [ 108.084652][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 108.091753][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 108.099349][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 108.108362][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 108.117561][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./105/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./105/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./105/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./105/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./105/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./105/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./105") = 0 mkdir("./106", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5239 ./strace-static-x86_64: Process 5239 attached [pid 5239] set_robust_list(0x555556375660, 24) = 0 [ 108.126774][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5239] chdir("./106") = 0 [pid 5239] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5239] setpgid(0, 0) = 0 [pid 5239] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5239] write(3, "1000", 4) = 4 [pid 5239] close(3) = 0 [pid 5239] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5239] memfd_create("syzkaller", 0) = 3 [pid 5239] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [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"..., 1048576) = 1048576 [pid 5239] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5239] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5239] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5239] close(3) = 0 [pid 5239] mkdir("./file0", 0777) = 0 [pid 5239] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5239] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5239] chdir("./file0") = 0 [pid 5239] ioctl(4, LOOP_CLR_FD) = 0 [pid 5239] close(4) = 0 [ 108.209904][ T5239] loop0: detected capacity change from 0 to 2048 [ 108.228146][ T5240] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5239] creat("./file2", 040) = 4 [pid 5239] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5239] exit_group(0) = ? [pid 5239] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5239, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./106", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./106", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./106/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./106/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./106/binderfs") = 0 [ 108.258295][ T5239] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 108.268544][ T5239] Remounting filesystem read-only [ 108.274885][ T5239] NILFS (loop0): error -5 truncating bmap (ino=16) [ 108.282876][ T5239] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 108.293467][ T5239] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 108.302982][ T5239] NILFS (loop0): error -5 truncating bmap (ino=16) [ 108.318336][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 108.326054][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 108.333534][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 108.342649][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 108.351589][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./106/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./106/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./106/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./106/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./106/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./106/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./106") = 0 mkdir("./107", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 108.361653][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5241 ./strace-static-x86_64: Process 5241 attached [pid 5241] set_robust_list(0x555556375660, 24) = 0 [pid 5241] chdir("./107") = 0 [pid 5241] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5241] setpgid(0, 0) = 0 [pid 5241] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5241] write(3, "1000", 4) = 4 [pid 5241] close(3) = 0 [pid 5241] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5241] memfd_create("syzkaller", 0) = 3 [pid 5241] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [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"..., 1048576) = 1048576 [pid 5241] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5241] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5241] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5241] close(3) = 0 [pid 5241] mkdir("./file0", 0777) = 0 [pid 5241] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5241] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5241] chdir("./file0") = 0 [pid 5241] ioctl(4, LOOP_CLR_FD) = 0 [pid 5241] close(4) = 0 [ 108.446329][ T5241] loop0: detected capacity change from 0 to 2048 [ 108.463480][ T5242] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 108.477357][ T5241] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 108.487480][ T5241] Remounting filesystem read-only [pid 5241] creat("./file2", 040) = 4 [pid 5241] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5241] exit_group(0) = ? [pid 5241] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5241, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./107", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./107", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./107/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./107/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./107/binderfs") = 0 [ 108.492776][ T5241] NILFS (loop0): error -5 truncating bmap (ino=16) [ 108.501359][ T5241] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 108.514373][ T5241] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 108.524202][ T5241] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./107/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./107/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./107/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./107/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./107/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./107/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./107") = 0 mkdir("./108", 0777) = 0 [ 108.539975][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 108.547718][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 108.555641][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 108.564669][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 108.573656][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 108.582783][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5243 ./strace-static-x86_64: Process 5243 attached [pid 5243] set_robust_list(0x555556375660, 24) = 0 [pid 5243] chdir("./108") = 0 [pid 5243] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5243] setpgid(0, 0) = 0 [pid 5243] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5243] write(3, "1000", 4) = 4 [pid 5243] close(3) = 0 [pid 5243] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5243] memfd_create("syzkaller", 0) = 3 [pid 5243] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5243] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5243] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5243] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5243] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5243] close(3) = 0 [pid 5243] mkdir("./file0", 0777) = 0 [pid 5243] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5243] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5243] chdir("./file0") = 0 [pid 5243] ioctl(4, LOOP_CLR_FD) = 0 [pid 5243] close(4) = 0 [ 108.658765][ T5243] loop0: detected capacity change from 0 to 2048 [ 108.677642][ T5244] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 108.693190][ T5243] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5243] creat("./file2", 040) = 4 [pid 5243] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5243] exit_group(0) = ? [pid 5243] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5243, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./108", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./108", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./108/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./108/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./108/binderfs") = 0 [ 108.705353][ T5243] Remounting filesystem read-only [ 108.711141][ T5243] NILFS (loop0): error -5 truncating bmap (ino=16) [ 108.720232][ T5243] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 108.730791][ T5243] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 108.740712][ T5243] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./108/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./108/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./108/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./108/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./108/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./108/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./108") = 0 mkdir("./109", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5245 ./strace-static-x86_64: Process 5245 attached [ 108.755204][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 108.762912][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 108.770248][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 108.779304][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 108.788640][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 108.797894][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5245] set_robust_list(0x555556375660, 24) = 0 [pid 5245] chdir("./109") = 0 [pid 5245] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5245] setpgid(0, 0) = 0 [pid 5245] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5245] write(3, "1000", 4) = 4 [pid 5245] close(3) = 0 [pid 5245] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5245] memfd_create("syzkaller", 0) = 3 [pid 5245] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5245] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5245] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5245] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5245] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5245] close(3) = 0 [pid 5245] mkdir("./file0", 0777) = 0 [pid 5245] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5245] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5245] chdir("./file0") = 0 [pid 5245] ioctl(4, LOOP_CLR_FD) = 0 [pid 5245] close(4) = 0 [ 108.874729][ T5245] loop0: detected capacity change from 0 to 2048 [ 108.890728][ T5246] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 108.915452][ T5245] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5245] creat("./file2", 040) = 4 [pid 5245] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5245] exit_group(0) = ? [pid 5245] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5245, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./109", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./109", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./109/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./109/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./109/binderfs") = 0 [ 108.926148][ T5245] Remounting filesystem read-only [ 108.931828][ T5245] NILFS (loop0): error -5 truncating bmap (ino=16) [ 108.939972][ T5245] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 108.951544][ T5245] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 108.961865][ T5245] NILFS (loop0): error -5 truncating bmap (ino=16) [ 108.982804][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 108.989898][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 108.997506][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 109.006645][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 109.016075][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./109/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./109/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./109/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./109/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./109/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./109/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 [ 109.025759][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer rmdir("./109") = 0 mkdir("./110", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5247 ./strace-static-x86_64: Process 5247 attached [pid 5247] set_robust_list(0x555556375660, 24) = 0 [pid 5247] chdir("./110") = 0 [pid 5247] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5247] setpgid(0, 0) = 0 [pid 5247] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5247] write(3, "1000", 4) = 4 [pid 5247] close(3) = 0 [pid 5247] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5247] memfd_create("syzkaller", 0) = 3 [pid 5247] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [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"..., 1048576) = 1048576 [pid 5247] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5247] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5247] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5247] close(3) = 0 [pid 5247] mkdir("./file0", 0777) = 0 [pid 5247] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5247] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5247] chdir("./file0") = 0 [pid 5247] ioctl(4, LOOP_CLR_FD) = 0 [pid 5247] close(4) = 0 [ 109.114759][ T5247] loop0: detected capacity change from 0 to 2048 [ 109.132385][ T5248] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 109.137139][ T5247] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 109.153798][ T5247] Remounting filesystem read-only [pid 5247] creat("./file2", 040) = 4 [pid 5247] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5247] exit_group(0) = ? [pid 5247] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5247, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./110", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./110", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./110/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./110/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./110/binderfs") = 0 [ 109.159502][ T5247] NILFS (loop0): error -5 truncating bmap (ino=16) [ 109.168562][ T5247] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 109.179444][ T5247] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 109.189039][ T5247] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./110/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./110/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./110/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./110/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./110/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./110/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./110") = 0 mkdir("./111", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5249 ./strace-static-x86_64: Process 5249 attached [pid 5249] set_robust_list(0x555556375660, 24) = 0 [pid 5249] chdir("./111") = 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) = 3 [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) = 0x7f093b4c4000 [ 109.209189][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 109.216571][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 109.224416][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 109.233433][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 109.242616][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 109.253590][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [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"..., 1048576) = 1048576 [pid 5249] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5249] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5249] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5249] close(3) = 0 [pid 5249] mkdir("./file0", 0777) = 0 [pid 5249] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5249] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5249] chdir("./file0") = 0 [pid 5249] ioctl(4, LOOP_CLR_FD) = 0 [pid 5249] close(4) = 0 [ 109.314213][ T5249] loop0: detected capacity change from 0 to 2048 [ 109.331354][ T5250] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5249] creat("./file2", 040) = 4 [ 109.364305][ T5249] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 109.376975][ T5249] Remounting filesystem read-only [ 109.383479][ T5249] NILFS (loop0): error -5 truncating bmap (ino=16) [ 109.391726][ T5249] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 109.402569][ T5249] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5249] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5249] exit_group(0) = ? [pid 5249] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5249, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./111", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./111", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./111/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./111/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./111/binderfs") = 0 [ 109.412309][ T5249] NILFS (loop0): error -5 truncating bmap (ino=16) [ 109.429676][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 109.439928][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 109.451612][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./111/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./111/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./111/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./111/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./111/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./111/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./111") = 0 mkdir("./112", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5251 [ 109.460617][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 109.470070][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 109.479323][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer ./strace-static-x86_64: Process 5251 attached [pid 5251] set_robust_list(0x555556375660, 24) = 0 [pid 5251] chdir("./112") = 0 [pid 5251] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5251] setpgid(0, 0) = 0 [pid 5251] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5251] write(3, "1000", 4) = 4 [pid 5251] close(3) = 0 [pid 5251] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5251] memfd_create("syzkaller", 0) = 3 [pid 5251] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5251] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5251] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5251] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5251] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5251] close(3) = 0 [pid 5251] mkdir("./file0", 0777) = 0 [pid 5251] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5251] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5251] chdir("./file0") = 0 [pid 5251] ioctl(4, LOOP_CLR_FD) = 0 [pid 5251] close(4) = 0 [ 109.557078][ T5251] loop0: detected capacity change from 0 to 2048 [ 109.572681][ T5252] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 109.595049][ T5251] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5251] creat("./file2", 040) = 4 [pid 5251] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5251] exit_group(0) = ? [pid 5251] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5251, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./112", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./112", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./112/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./112/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./112/binderfs") = 0 [ 109.612577][ T5251] Remounting filesystem read-only [ 109.618210][ T5251] NILFS (loop0): error -5 truncating bmap (ino=16) [ 109.628896][ T5251] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 109.639884][ T5251] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 109.649498][ T5251] NILFS (loop0): error -5 truncating bmap (ino=16) [ 109.667193][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 109.674378][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 109.682491][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 109.691792][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 109.703668][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./112/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./112/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./112/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./112/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./112/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./112/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./112") = 0 mkdir("./113", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5253 ./strace-static-x86_64: Process 5253 attached [pid 5253] set_robust_list(0x555556375660, 24) = 0 [pid 5253] chdir("./113") = 0 [ 109.713023][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5253] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5253] setpgid(0, 0) = 0 [pid 5253] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5253] write(3, "1000", 4) = 4 [pid 5253] close(3) = 0 [pid 5253] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5253] memfd_create("syzkaller", 0) = 3 [pid 5253] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5253] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5253] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5253] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5253] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5253] close(3) = 0 [pid 5253] mkdir("./file0", 0777) = 0 [pid 5253] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5253] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5253] chdir("./file0") = 0 [pid 5253] ioctl(4, LOOP_CLR_FD) = 0 [pid 5253] close(4) = 0 [ 109.791924][ T5253] loop0: detected capacity change from 0 to 2048 [ 109.808429][ T5254] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 109.823542][ T5253] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 109.834274][ T5253] Remounting filesystem read-only [pid 5253] creat("./file2", 040) = 4 [pid 5253] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5253] exit_group(0) = ? [pid 5253] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5253, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./113", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./113", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./113/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./113/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./113/binderfs") = 0 [ 109.840090][ T5253] NILFS (loop0): error -5 truncating bmap (ino=16) [ 109.848578][ T5253] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 109.859604][ T5253] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 109.869200][ T5253] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./113/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./113/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./113/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./113/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./113/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./113/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./113") = 0 mkdir("./114", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 109.889310][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 109.896853][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 109.904789][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 109.914269][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 109.923461][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 109.932645][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5255 ./strace-static-x86_64: Process 5255 attached [pid 5255] set_robust_list(0x555556375660, 24) = 0 [pid 5255] chdir("./114") = 0 [pid 5255] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5255] setpgid(0, 0) = 0 [pid 5255] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5255] write(3, "1000", 4) = 4 [pid 5255] close(3) = 0 [pid 5255] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5255] memfd_create("syzkaller", 0) = 3 [pid 5255] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [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"..., 1048576) = 1048576 [pid 5255] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5255] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5255] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5255] close(3) = 0 [pid 5255] mkdir("./file0", 0777) = 0 [pid 5255] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5255] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5255] chdir("./file0") = 0 [pid 5255] ioctl(4, LOOP_CLR_FD) = 0 [pid 5255] close(4) = 0 [ 110.015353][ T5255] loop0: detected capacity change from 0 to 2048 [ 110.032346][ T5256] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 110.053633][ T5255] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5255] creat("./file2", 040) = 4 [pid 5255] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5255] exit_group(0) = ? [pid 5255] +++ exited with 0 +++ --- 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 */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./114", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./114", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./114/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./114/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./114/binderfs") = 0 [ 110.065364][ T5255] Remounting filesystem read-only [ 110.070956][ T5255] NILFS (loop0): error -5 truncating bmap (ino=16) [ 110.080240][ T5255] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 110.090832][ T5255] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 110.100950][ T5255] NILFS (loop0): error -5 truncating bmap (ino=16) [ 110.122993][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 110.129996][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 110.137685][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 110.147032][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 110.156244][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./114/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./114/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./114/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./114/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./114/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./114/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./114") = 0 mkdir("./115", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5257 attached [pid 5257] set_robust_list(0x555556375660, 24) = 0 [pid 5257] chdir("./115") = 0 [pid 5257] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5257] setpgid(0, 0) = 0 [pid 5257] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5257] write(3, "1000", 4) = 4 [pid 5257] close(3) = 0 [pid 5257] symlink("/dev/binderfs", "./binderfs" [pid 5024] <... clone resumed>, child_tidptr=0x555556375650) = 5257 [pid 5257] <... symlink resumed>) = 0 [pid 5257] memfd_create("syzkaller", 0) = 3 [pid 5257] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 110.165502][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [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"..., 1048576) = 1048576 [pid 5257] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5257] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5257] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5257] close(3) = 0 [pid 5257] mkdir("./file0", 0777) = 0 [pid 5257] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5257] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5257] chdir("./file0") = 0 [pid 5257] ioctl(4, LOOP_CLR_FD) = 0 [pid 5257] close(4) = 0 [pid 5257] creat("./file2", 040) = 4 [ 110.232795][ T5257] loop0: detected capacity change from 0 to 2048 [ 110.249199][ T5258] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 110.257550][ T5257] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 110.270757][ T5257] Remounting filesystem read-only [ 110.276588][ T5257] NILFS (loop0): error -5 truncating bmap (ino=16) [pid 5257] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5257] exit_group(0) = ? [pid 5257] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5257, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./115", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./115", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./115/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./115/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./115/binderfs") = 0 [ 110.284750][ T5257] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 110.295172][ T5257] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 110.305008][ T5257] NILFS (loop0): error -5 truncating bmap (ino=16) [ 110.324429][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./115/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./115/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./115/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./115/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./115/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./115/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./115") = 0 mkdir("./116", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5259 ./strace-static-x86_64: Process 5259 attached [pid 5259] set_robust_list(0x555556375660, 24) = 0 [ 110.331571][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 110.338955][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 110.348707][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 110.357952][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 110.367402][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5259] chdir("./116") = 0 [pid 5259] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5259] setpgid(0, 0) = 0 [pid 5259] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5259] write(3, "1000", 4) = 4 [pid 5259] close(3) = 0 [pid 5259] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5259] memfd_create("syzkaller", 0) = 3 [pid 5259] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5259] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5259] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5259] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5259] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5259] close(3) = 0 [pid 5259] mkdir("./file0", 0777) = 0 [pid 5259] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5259] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5259] chdir("./file0") = 0 [pid 5259] ioctl(4, LOOP_CLR_FD) = 0 [pid 5259] close(4) = 0 [ 110.449020][ T5259] loop0: detected capacity change from 0 to 2048 [ 110.463901][ T5260] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 110.484315][ T5259] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5259] creat("./file2", 040) = 4 [pid 5259] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5259] exit_group(0) = ? [pid 5259] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5259, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./116", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./116", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./116/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./116/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./116/binderfs") = 0 [ 110.495360][ T5259] Remounting filesystem read-only [ 110.500616][ T5259] NILFS (loop0): error -5 truncating bmap (ino=16) [ 110.509841][ T5259] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 110.520125][ T5259] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 110.529654][ T5259] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./116/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./116/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./116/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./116/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./116/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./116/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./116") = 0 mkdir("./117", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 [ 110.547327][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 110.554631][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 110.562004][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 110.570894][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 110.579832][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 110.588966][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5261 ./strace-static-x86_64: Process 5261 attached [pid 5261] set_robust_list(0x555556375660, 24) = 0 [pid 5261] chdir("./117") = 0 [pid 5261] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5261] setpgid(0, 0) = 0 [pid 5261] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5261] write(3, "1000", 4) = 4 [pid 5261] close(3) = 0 [pid 5261] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5261] memfd_create("syzkaller", 0) = 3 [pid 5261] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5261] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5261] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5261] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5261] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5261] close(3) = 0 [pid 5261] mkdir("./file0", 0777) = 0 [pid 5261] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5261] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5261] chdir("./file0") = 0 [pid 5261] ioctl(4, LOOP_CLR_FD) = 0 [pid 5261] close(4) = 0 [ 110.664378][ T5261] loop0: detected capacity change from 0 to 2048 [ 110.683317][ T5262] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 110.702016][ T5261] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5261] creat("./file2", 040) = 4 [pid 5261] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5261] exit_group(0) = ? [pid 5261] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5261, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./117", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./117", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./117/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./117/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./117/binderfs") = 0 [ 110.713614][ T5261] Remounting filesystem read-only [ 110.721274][ T5261] NILFS (loop0): error -5 truncating bmap (ino=16) [ 110.729842][ T5261] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 110.739968][ T5261] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 110.749535][ T5261] NILFS (loop0): error -5 truncating bmap (ino=16) [ 110.767906][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 110.774989][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 110.783083][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 110.793035][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 110.802769][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./117/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./117/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./117/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./117/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./117/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./117/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./117") = 0 mkdir("./118", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5263 ./strace-static-x86_64: Process 5263 attached [pid 5263] set_robust_list(0x555556375660, 24) = 0 [pid 5263] chdir("./118") = 0 [pid 5263] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5263] setpgid(0, 0) = 0 [pid 5263] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5263] write(3, "1000", 4) = 4 [pid 5263] close(3) = 0 [pid 5263] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5263] memfd_create("syzkaller", 0) = 3 [pid 5263] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 110.812073][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [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"..., 1048576) = 1048576 [pid 5263] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5263] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5263] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5263] close(3) = 0 [pid 5263] mkdir("./file0", 0777) = 0 [pid 5263] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5263] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5263] chdir("./file0") = 0 [pid 5263] ioctl(4, LOOP_CLR_FD) = 0 [pid 5263] close(4) = 0 [ 110.878416][ T5263] loop0: detected capacity change from 0 to 2048 [ 110.897699][ T5264] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 110.914752][ T5263] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5263] creat("./file2", 040) = 4 [pid 5263] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5263] exit_group(0) = ? [pid 5263] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5263, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./118", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./118", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./118/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./118/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./118/binderfs") = 0 [ 110.925481][ T5263] Remounting filesystem read-only [ 110.930893][ T5263] NILFS (loop0): error -5 truncating bmap (ino=16) [ 110.940927][ T5263] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 110.951819][ T5263] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 110.961955][ T5263] NILFS (loop0): error -5 truncating bmap (ino=16) [ 110.983991][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 110.991237][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 110.998713][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 111.008931][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 111.018948][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./118/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./118/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./118/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./118/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./118/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./118/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./118") = 0 mkdir("./119", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5265 ./strace-static-x86_64: Process 5265 attached [pid 5265] set_robust_list(0x555556375660, 24) = 0 [pid 5265] chdir("./119") = 0 [ 111.030410][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5265] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5265] setpgid(0, 0) = 0 [pid 5265] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5265] write(3, "1000", 4) = 4 [pid 5265] close(3) = 0 [pid 5265] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5265] memfd_create("syzkaller", 0) = 3 [pid 5265] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5265] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5265] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5265] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5265] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5265] close(3) = 0 [pid 5265] mkdir("./file0", 0777) = 0 [pid 5265] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5265] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5265] chdir("./file0") = 0 [pid 5265] ioctl(4, LOOP_CLR_FD) = 0 [ 111.107820][ T5265] loop0: detected capacity change from 0 to 2048 [ 111.126580][ T5266] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5265] close(4) = 0 [pid 5265] creat("./file2", 040) = 4 [ 111.152959][ T5265] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 111.167664][ T5265] Remounting filesystem read-only [ 111.175548][ T5265] NILFS (loop0): error -5 truncating bmap (ino=16) [ 111.184609][ T5265] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 111.194676][ T5265] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5265] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5265] exit_group(0) = ? [pid 5265] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5265, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./119", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./119", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./119/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./119/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./119/binderfs") = 0 [ 111.205562][ T5265] NILFS (loop0): error -5 truncating bmap (ino=16) [ 111.224277][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 111.232401][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 111.239727][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 111.249077][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./119/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./119/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./119/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./119/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./119/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./119/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./119") = 0 mkdir("./120", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5267 ./strace-static-x86_64: Process 5267 attached [pid 5267] set_robust_list(0x555556375660, 24) = 0 [pid 5267] chdir("./120") = 0 [pid 5267] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5267] setpgid(0, 0) = 0 [pid 5267] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5267] write(3, "1000", 4) = 4 [pid 5267] close(3) = 0 [pid 5267] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5267] memfd_create("syzkaller", 0) = 3 [pid 5267] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 111.258286][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 111.267568][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5267] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5267] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5267] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5267] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5267] close(3) = 0 [pid 5267] mkdir("./file0", 0777) = 0 [pid 5267] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5267] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5267] chdir("./file0") = 0 [pid 5267] ioctl(4, LOOP_CLR_FD) = 0 [pid 5267] close(4) = 0 [ 111.335771][ T5267] loop0: detected capacity change from 0 to 2048 [ 111.350990][ T5268] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 111.375344][ T5267] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5267] creat("./file2", 040) = 4 [pid 5267] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5267] exit_group(0) = ? [pid 5267] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5267, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./120", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./120", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./120/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./120/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./120/binderfs") = 0 [ 111.393342][ T5267] Remounting filesystem read-only [ 111.399047][ T5267] NILFS (loop0): error -5 truncating bmap (ino=16) [ 111.408275][ T5267] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 111.420137][ T5267] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 111.429752][ T5267] NILFS (loop0): error -5 truncating bmap (ino=16) [ 111.449826][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 111.456905][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 111.464277][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 111.473298][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 111.482472][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./120/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./120/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./120/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./120/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./120/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./120/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./120") = 0 mkdir("./121", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5269 ./strace-static-x86_64: Process 5269 attached [pid 5269] set_robust_list(0x555556375660, 24) = 0 [pid 5269] chdir("./121") = 0 [pid 5269] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5269] setpgid(0, 0) = 0 [pid 5269] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5269] write(3, "1000", 4) = 4 [pid 5269] close(3) = 0 [pid 5269] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5269] memfd_create("syzkaller", 0) = 3 [pid 5269] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 111.491724][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5269] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5269] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5269] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5269] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5269] close(3) = 0 [pid 5269] mkdir("./file0", 0777) = 0 [pid 5269] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5269] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5269] chdir("./file0") = 0 [pid 5269] ioctl(4, LOOP_CLR_FD) = 0 [pid 5269] close(4) = 0 [ 111.557686][ T5269] loop0: detected capacity change from 0 to 2048 [ 111.574063][ T5270] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 111.594356][ T5269] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5269] creat("./file2", 040) = 4 [pid 5269] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5269] exit_group(0) = ? [pid 5269] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5269, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./121", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./121", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./121/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./121/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./121/binderfs") = 0 [ 111.605852][ T5269] Remounting filesystem read-only [ 111.611729][ T5269] NILFS (loop0): error -5 truncating bmap (ino=16) [ 111.619147][ T5269] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 111.631894][ T5269] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 111.641097][ T5269] NILFS (loop0): error -5 truncating bmap (ino=16) [ 111.658590][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 111.665657][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 111.673075][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 111.682178][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 111.695838][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./121/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./121/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./121/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./121/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./121/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./121/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./121") = 0 mkdir("./122", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5271 ./strace-static-x86_64: Process 5271 attached [pid 5271] set_robust_list(0x555556375660, 24) = 0 [pid 5271] chdir("./122") = 0 [pid 5271] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5271] setpgid(0, 0) = 0 [pid 5271] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5271] write(3, "1000", 4) = 4 [pid 5271] close(3) = 0 [pid 5271] symlink("/dev/binderfs", "./binderfs") = 0 [ 111.706504][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5271] memfd_create("syzkaller", 0) = 3 [pid 5271] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5271] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5271] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5271] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5271] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5271] close(3) = 0 [pid 5271] mkdir("./file0", 0777) = 0 [pid 5271] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5271] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5271] chdir("./file0") = 0 [pid 5271] ioctl(4, LOOP_CLR_FD) = 0 [pid 5271] close(4) = 0 [pid 5271] creat("./file2", 040) = 4 [ 111.792403][ T5271] loop0: detected capacity change from 0 to 2048 [ 111.807521][ T5272] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 111.815684][ T5271] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 111.829090][ T5271] Remounting filesystem read-only [ 111.834704][ T5271] NILFS (loop0): error -5 truncating bmap (ino=16) [pid 5271] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5271] exit_group(0) = ? [pid 5271] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5271, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./122", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./122", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./122/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./122/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./122/binderfs") = 0 [ 111.843023][ T5271] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 111.853090][ T5271] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 111.864753][ T5271] NILFS (loop0): error -5 truncating bmap (ino=16) [ 111.887788][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 111.895794][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 111.903681][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 111.914367][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 111.925739][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./122/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./122/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./122/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./122/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./122/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./122/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./122") = 0 mkdir("./123", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5273 ./strace-static-x86_64: Process 5273 attached [pid 5273] set_robust_list(0x555556375660, 24) = 0 [pid 5273] chdir("./123") = 0 [pid 5273] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5273] setpgid(0, 0) = 0 [pid 5273] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5273] write(3, "1000", 4) = 4 [pid 5273] close(3) = 0 [ 111.935544][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5273] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5273] memfd_create("syzkaller", 0) = 3 [pid 5273] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5273] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5273] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5273] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5273] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5273] close(3) = 0 [pid 5273] mkdir("./file0", 0777) = 0 [pid 5273] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5273] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5273] chdir("./file0") = 0 [pid 5273] ioctl(4, LOOP_CLR_FD) = 0 [pid 5273] close(4) = 0 [ 112.010744][ T5273] loop0: detected capacity change from 0 to 2048 [ 112.027639][ T5274] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5273] creat("./file2", 040) = 4 [ 112.055438][ T5273] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 112.066151][ T5273] Remounting filesystem read-only [ 112.080652][ T5273] NILFS (loop0): error -5 truncating bmap (ino=16) [ 112.090846][ T5273] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 112.102057][ T5273] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5273] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5273] exit_group(0) = ? [pid 5273] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5273, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./123", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./123", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./123/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./123/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./123/binderfs") = 0 [ 112.111339][ T5273] NILFS (loop0): error -5 truncating bmap (ino=16) [ 112.141316][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 112.148428][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 umount2("./123/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./123/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./123/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./123/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./123/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./123/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./123") = 0 mkdir("./124", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5275 ./strace-static-x86_64: Process 5275 attached [pid 5275] set_robust_list(0x555556375660, 24) = 0 [pid 5275] chdir("./124") = 0 [pid 5275] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5275] setpgid(0, 0) = 0 [pid 5275] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5275] write(3, "1000", 4) = 4 [pid 5275] close(3) = 0 [pid 5275] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5275] memfd_create("syzkaller", 0) = 3 [pid 5275] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 112.159533][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 112.168574][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 112.178112][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 112.188663][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5275] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5275] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5275] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5275] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5275] close(3) = 0 [pid 5275] mkdir("./file0", 0777) = 0 [pid 5275] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5275] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5275] chdir("./file0") = 0 [pid 5275] ioctl(4, LOOP_CLR_FD) = 0 [pid 5275] close(4) = 0 [ 112.266039][ T5275] loop0: detected capacity change from 0 to 2048 [ 112.281103][ T5276] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 112.304512][ T5275] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5275] creat("./file2", 040) = 4 [pid 5275] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5275] exit_group(0) = ? [pid 5275] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5275, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./124", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./124", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./124/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./124/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./124/binderfs") = 0 [ 112.315454][ T5275] Remounting filesystem read-only [ 112.321870][ T5275] NILFS (loop0): error -5 truncating bmap (ino=16) [ 112.329867][ T5275] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 112.340440][ T5275] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 112.352744][ T5275] NILFS (loop0): error -5 truncating bmap (ino=16) [ 112.371145][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 112.378810][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 112.387354][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 112.397086][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 112.409986][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./124/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./124/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./124/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./124/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./124/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./124/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./124") = 0 mkdir("./125", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5277 ./strace-static-x86_64: Process 5277 attached [pid 5277] set_robust_list(0x555556375660, 24) = 0 [pid 5277] chdir("./125") = 0 [pid 5277] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5277] setpgid(0, 0) = 0 [pid 5277] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5277] write(3, "1000", 4) = 4 [pid 5277] close(3) = 0 [pid 5277] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5277] memfd_create("syzkaller", 0) = 3 [pid 5277] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 112.419932][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5277] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5277] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5277] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5277] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5277] close(3) = 0 [pid 5277] mkdir("./file0", 0777) = 0 [pid 5277] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5277] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5277] chdir("./file0") = 0 [pid 5277] ioctl(4, LOOP_CLR_FD) = 0 [pid 5277] close(4) = 0 [ 112.485785][ T5277] loop0: detected capacity change from 0 to 2048 [ 112.500901][ T5278] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 112.517626][ T5277] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 112.528244][ T5277] Remounting filesystem read-only [pid 5277] creat("./file2", 040) = 4 [pid 5277] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5277] exit_group(0) = ? [pid 5277] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5277, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./125", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./125", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./125/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./125/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./125/binderfs") = 0 [ 112.534012][ T5277] NILFS (loop0): error -5 truncating bmap (ino=16) [ 112.542258][ T5277] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 112.552906][ T5277] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 112.562600][ T5277] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./125/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./125/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./125/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./125/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./125/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./125/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./125") = 0 mkdir("./126", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 112.582129][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 112.589321][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 112.597403][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 112.606713][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 112.615747][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 112.625319][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5279 ./strace-static-x86_64: Process 5279 attached [pid 5279] set_robust_list(0x555556375660, 24) = 0 [pid 5279] chdir("./126") = 0 [pid 5279] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5279] setpgid(0, 0) = 0 [pid 5279] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5279] write(3, "1000", 4) = 4 [pid 5279] close(3) = 0 [pid 5279] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5279] memfd_create("syzkaller", 0) = 3 [pid 5279] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5279] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5279] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5279] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5279] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5279] close(3) = 0 [pid 5279] mkdir("./file0", 0777) = 0 [pid 5279] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5279] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5279] chdir("./file0") = 0 [pid 5279] ioctl(4, LOOP_CLR_FD) = 0 [pid 5279] close(4) = 0 [ 112.708035][ T5279] loop0: detected capacity change from 0 to 2048 [ 112.726365][ T5280] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 112.733295][ T5279] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 112.749939][ T5279] Remounting filesystem read-only [pid 5279] creat("./file2", 040) = 4 [pid 5279] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5279] exit_group(0) = ? [pid 5279] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5279, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./126", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./126", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./126/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./126/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./126/binderfs") = 0 [ 112.756932][ T5279] NILFS (loop0): error -5 truncating bmap (ino=16) [ 112.765107][ T5279] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 112.776186][ T5279] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 112.786392][ T5279] NILFS (loop0): error -5 truncating bmap (ino=16) [ 112.808149][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 112.815508][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 112.824652][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 112.833884][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 112.842817][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./126/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./126/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./126/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./126/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./126/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./126/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./126") = 0 mkdir("./127", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 112.851959][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5281 ./strace-static-x86_64: Process 5281 attached [pid 5281] set_robust_list(0x555556375660, 24) = 0 [pid 5281] chdir("./127") = 0 [pid 5281] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5281] setpgid(0, 0) = 0 [pid 5281] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5281] write(3, "1000", 4) = 4 [pid 5281] close(3) = 0 [pid 5281] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5281] memfd_create("syzkaller", 0) = 3 [pid 5281] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5281] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5281] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5281] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5281] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5281] close(3) = 0 [pid 5281] mkdir("./file0", 0777) = 0 [pid 5281] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5281] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5281] chdir("./file0") = 0 [pid 5281] ioctl(4, LOOP_CLR_FD) = 0 [pid 5281] close(4) = 0 [ 112.928833][ T5281] loop0: detected capacity change from 0 to 2048 [ 112.944165][ T5282] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 112.963459][ T5281] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 112.973705][ T5281] Remounting filesystem read-only [pid 5281] creat("./file2", 040) = 4 [pid 5281] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5281] exit_group(0) = ? [pid 5281] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5281, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./127", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./127", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./127/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./127/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./127/binderfs") = 0 [ 112.979121][ T5281] NILFS (loop0): error -5 truncating bmap (ino=16) [ 112.987336][ T5281] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 112.998230][ T5281] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 113.007849][ T5281] NILFS (loop0): error -5 truncating bmap (ino=16) [ 113.034494][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 113.041664][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 113.049074][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 113.058424][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 113.068244][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./127/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./127/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./127/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./127/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./127/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./127/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./127") = 0 mkdir("./128", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5283 ./strace-static-x86_64: Process 5283 attached [pid 5283] set_robust_list(0x555556375660, 24) = 0 [pid 5283] chdir("./128") = 0 [pid 5283] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [ 113.077651][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5283] setpgid(0, 0) = 0 [pid 5283] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5283] write(3, "1000", 4) = 4 [pid 5283] close(3) = 0 [pid 5283] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5283] memfd_create("syzkaller", 0) = 3 [pid 5283] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5283] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5283] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5283] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5283] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5283] close(3) = 0 [pid 5283] mkdir("./file0", 0777) = 0 [pid 5283] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5283] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5283] chdir("./file0") = 0 [pid 5283] ioctl(4, LOOP_CLR_FD) = 0 [pid 5283] close(4) = 0 [ 113.164531][ T5283] loop0: detected capacity change from 0 to 2048 [ 113.191983][ T5284] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5283] creat("./file2", 040) = 4 [ 113.225038][ T5283] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 113.237504][ T5283] Remounting filesystem read-only [ 113.243274][ T5283] NILFS (loop0): error -5 truncating bmap (ino=16) [ 113.251006][ T5283] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 113.261377][ T5283] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5283] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5283] exit_group(0) = ? [pid 5283] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5283, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./128", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./128", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./128/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./128/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./128/binderfs") = 0 [ 113.270939][ T5283] NILFS (loop0): error -5 truncating bmap (ino=16) [ 113.286797][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 113.293875][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 113.301279][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 113.310246][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./128/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./128/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./128/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./128/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./128/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./128/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./128") = 0 mkdir("./129", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5285 ./strace-static-x86_64: Process 5285 attached [pid 5285] set_robust_list(0x555556375660, 24) = 0 [pid 5285] chdir("./129") = 0 [pid 5285] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5285] setpgid(0, 0) = 0 [pid 5285] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5285] write(3, "1000", 4) = 4 [pid 5285] close(3) = 0 [pid 5285] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5285] memfd_create("syzkaller", 0) = 3 [pid 5285] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 113.319195][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 113.328380][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5285] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5285] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5285] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5285] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5285] close(3) = 0 [pid 5285] mkdir("./file0", 0777) = 0 [pid 5285] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5285] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5285] chdir("./file0") = 0 [pid 5285] ioctl(4, LOOP_CLR_FD) = 0 [pid 5285] close(4) = 0 [ 113.394209][ T5285] loop0: detected capacity change from 0 to 2048 [ 113.411679][ T5286] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 113.416592][ T5285] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 113.435219][ T5285] Remounting filesystem read-only [pid 5285] creat("./file2", 040) = 4 [pid 5285] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5285] exit_group(0) = ? [pid 5285] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5285, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./129", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./129", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./129/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./129/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./129/binderfs") = 0 [ 113.441122][ T5285] NILFS (loop0): error -5 truncating bmap (ino=16) [ 113.450070][ T5285] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 113.460392][ T5285] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 113.471859][ T5285] NILFS (loop0): error -5 truncating bmap (ino=16) [ 113.492172][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 113.499825][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 113.508938][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 113.518177][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 113.527642][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./129/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./129/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./129/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./129/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./129/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./129/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./129") = 0 mkdir("./130", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5287 ./strace-static-x86_64: Process 5287 attached [pid 5287] set_robust_list(0x555556375660, 24) = 0 [pid 5287] chdir("./130") = 0 [pid 5287] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5287] setpgid(0, 0) = 0 [ 113.536899][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5287] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5287] write(3, "1000", 4) = 4 [pid 5287] close(3) = 0 [pid 5287] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5287] memfd_create("syzkaller", 0) = 3 [pid 5287] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5287] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5287] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5287] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5287] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5287] close(3) = 0 [pid 5287] mkdir("./file0", 0777) = 0 [pid 5287] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5287] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5287] chdir("./file0") = 0 [pid 5287] ioctl(4, LOOP_CLR_FD) = 0 [pid 5287] close(4) = 0 [ 113.619586][ T5287] loop0: detected capacity change from 0 to 2048 [ 113.636979][ T5288] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 113.653069][ T5287] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 113.664068][ T5287] Remounting filesystem read-only [pid 5287] creat("./file2", 040) = 4 [pid 5287] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5287] exit_group(0) = ? [pid 5287] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5287, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./130", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./130", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./130/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./130/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./130/binderfs") = 0 [ 113.669503][ T5287] NILFS (loop0): error -5 truncating bmap (ino=16) [ 113.678940][ T5287] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 113.688994][ T5287] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 113.698785][ T5287] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./130/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./130/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./130/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./130/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./130/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./130/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./130") = 0 mkdir("./131", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 113.713695][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 113.720683][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 113.728262][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 113.737244][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 113.746165][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 113.755892][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5289 ./strace-static-x86_64: Process 5289 attached [pid 5289] set_robust_list(0x555556375660, 24) = 0 [pid 5289] chdir("./131") = 0 [pid 5289] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5289] setpgid(0, 0) = 0 [pid 5289] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5289] write(3, "1000", 4) = 4 [pid 5289] close(3) = 0 [pid 5289] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5289] memfd_create("syzkaller", 0) = 3 [pid 5289] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5289] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5289] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5289] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5289] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5289] close(3) = 0 [pid 5289] mkdir("./file0", 0777) = 0 [pid 5289] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5289] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5289] chdir("./file0") = 0 [pid 5289] ioctl(4, LOOP_CLR_FD) = 0 [pid 5289] close(4) = 0 [ 113.829001][ T5289] loop0: detected capacity change from 0 to 2048 [ 113.843732][ T5290] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 113.860628][ T5289] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 113.870996][ T5289] Remounting filesystem read-only [pid 5289] creat("./file2", 040) = 4 [pid 5289] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5289] exit_group(0) = ? [pid 5289] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5289, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- umount2("./131", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./131", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./131/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./131/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./131/binderfs") = 0 [ 113.876454][ T5289] NILFS (loop0): error -5 truncating bmap (ino=16) [ 113.891256][ T5289] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 113.901231][ T5289] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 113.911148][ T5289] NILFS (loop0): error -5 truncating bmap (ino=16) [ 113.932126][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 113.939116][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 113.946912][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 113.955881][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 113.964806][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./131/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./131/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./131/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./131/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./131/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./131/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./131") = 0 mkdir("./132", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5291 ./strace-static-x86_64: Process 5291 attached [pid 5291] set_robust_list(0x555556375660, 24) = 0 [pid 5291] chdir("./132") = 0 [pid 5291] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5291] setpgid(0, 0) = 0 [pid 5291] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5291] write(3, "1000", 4) = 4 [pid 5291] close(3) = 0 [pid 5291] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5291] memfd_create("syzkaller", 0) = 3 [pid 5291] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 113.974096][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5291] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5291] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5291] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5291] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5291] close(3) = 0 [pid 5291] mkdir("./file0", 0777) = 0 [pid 5291] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5291] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5291] chdir("./file0") = 0 [pid 5291] ioctl(4, LOOP_CLR_FD) = 0 [pid 5291] close(4) = 0 [ 114.047968][ T5291] loop0: detected capacity change from 0 to 2048 [ 114.066504][ T5292] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5291] creat("./file2", 040) = 4 [ 114.095621][ T5291] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 114.107954][ T5291] Remounting filesystem read-only [ 114.114017][ T5291] NILFS (loop0): error -5 truncating bmap (ino=16) [ 114.122515][ T5291] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 114.133445][ T5291] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5291] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5291] exit_group(0) = ? [pid 5291] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5291, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./132", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./132", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./132/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./132/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./132/binderfs") = 0 [ 114.142849][ T5291] NILFS (loop0): error -5 truncating bmap (ino=16) [ 114.161855][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 114.168907][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 114.176735][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 114.186196][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./132/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./132/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./132/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./132/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./132/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./132/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./132") = 0 mkdir("./133", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5293 ./strace-static-x86_64: Process 5293 attached [pid 5293] set_robust_list(0x555556375660, 24) = 0 [pid 5293] chdir("./133") = 0 [pid 5293] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5293] setpgid(0, 0) = 0 [ 114.195327][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 114.205655][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5293] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5293] write(3, "1000", 4) = 4 [pid 5293] close(3) = 0 [pid 5293] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5293] memfd_create("syzkaller", 0) = 3 [pid 5293] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5293] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5293] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5293] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5293] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5293] close(3) = 0 [pid 5293] mkdir("./file0", 0777) = 0 [pid 5293] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5293] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5293] chdir("./file0") = 0 [pid 5293] ioctl(4, LOOP_CLR_FD) = 0 [pid 5293] close(4) = 0 [ 114.281619][ T5293] loop0: detected capacity change from 0 to 2048 [ 114.298026][ T5294] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 114.308638][ T5293] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 114.321037][ T5293] Remounting filesystem read-only [pid 5293] creat("./file2", 040) = 4 [pid 5293] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5293] exit_group(0) = ? [pid 5293] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5293, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./133", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./133", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./133/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./133/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./133/binderfs") = 0 [ 114.331556][ T5293] NILFS (loop0): error -5 truncating bmap (ino=16) [ 114.339905][ T5293] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 114.349953][ T5293] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 114.359499][ T5293] NILFS (loop0): error -5 truncating bmap (ino=16) [ 114.382155][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 114.390069][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 114.398575][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 114.408020][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 114.416988][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./133/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./133/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./133/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./133/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./133/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./133/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./133") = 0 mkdir("./134", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5295 ./strace-static-x86_64: Process 5295 attached [pid 5295] set_robust_list(0x555556375660, 24) = 0 [pid 5295] chdir("./134") = 0 [pid 5295] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5295] setpgid(0, 0) = 0 [pid 5295] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5295] write(3, "1000", 4) = 4 [pid 5295] close(3) = 0 [pid 5295] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5295] memfd_create("syzkaller", 0) = 3 [pid 5295] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 114.426268][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5295] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5295] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5295] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5295] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5295] close(3) = 0 [pid 5295] mkdir("./file0", 0777) = 0 [pid 5295] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5295] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5295] chdir("./file0") = 0 [pid 5295] ioctl(4, LOOP_CLR_FD) = 0 [pid 5295] close(4) = 0 [ 114.488739][ T5295] loop0: detected capacity change from 0 to 2048 [ 114.505470][ T5296] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 114.524093][ T5295] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5295] creat("./file2", 040) = 4 [pid 5295] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5295] exit_group(0) = ? [pid 5295] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5295, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./134", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./134", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./134/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./134/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./134/binderfs") = 0 [ 114.535505][ T5295] Remounting filesystem read-only [ 114.540680][ T5295] NILFS (loop0): error -5 truncating bmap (ino=16) [ 114.548722][ T5295] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 114.558876][ T5295] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 114.568697][ T5295] NILFS (loop0): error -5 truncating bmap (ino=16) [ 114.584204][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 114.591214][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 114.598728][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 114.608353][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 114.628599][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./134/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./134/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./134/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./134/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./134/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./134/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./134") = 0 mkdir("./135", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5297 ./strace-static-x86_64: Process 5297 attached [pid 5297] set_robust_list(0x555556375660, 24) = 0 [pid 5297] chdir("./135") = 0 [pid 5297] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5297] setpgid(0, 0) = 0 [pid 5297] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5297] write(3, "1000", 4) = 4 [pid 5297] close(3) = 0 [pid 5297] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5297] memfd_create("syzkaller", 0) = 3 [pid 5297] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 114.638708][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5297] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5297] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5297] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5297] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5297] close(3) = 0 [pid 5297] mkdir("./file0", 0777) = 0 [pid 5297] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5297] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5297] chdir("./file0") = 0 [pid 5297] ioctl(4, LOOP_CLR_FD) = 0 [pid 5297] close(4) = 0 [ 114.712230][ T5297] loop0: detected capacity change from 0 to 2048 [ 114.730058][ T5298] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 114.745252][ T5297] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 114.755806][ T5297] Remounting filesystem read-only [pid 5297] creat("./file2", 040) = 4 [pid 5297] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5297] exit_group(0) = ? [pid 5297] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5297, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./135", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./135", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./135/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./135/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./135/binderfs") = 0 [ 114.760997][ T5297] NILFS (loop0): error -5 truncating bmap (ino=16) [ 114.769227][ T5297] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 114.780089][ T5297] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 114.790289][ T5297] NILFS (loop0): error -5 truncating bmap (ino=16) [ 114.810781][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 114.818188][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 114.826096][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 114.835451][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 114.844537][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./135/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./135/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./135/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./135/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./135/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./135/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./135") = 0 mkdir("./136", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 114.854288][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5299 ./strace-static-x86_64: Process 5299 attached [pid 5299] set_robust_list(0x555556375660, 24) = 0 [pid 5299] chdir("./136") = 0 [pid 5299] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5299] setpgid(0, 0) = 0 [pid 5299] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5299] write(3, "1000", 4) = 4 [pid 5299] close(3) = 0 [pid 5299] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5299] memfd_create("syzkaller", 0) = 3 [pid 5299] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5299] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5299] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5299] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5299] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5299] close(3) = 0 [pid 5299] mkdir("./file0", 0777) = 0 [pid 5299] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5299] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5299] chdir("./file0") = 0 [pid 5299] ioctl(4, LOOP_CLR_FD) = 0 [pid 5299] close(4) = 0 [ 114.933022][ T5299] loop0: detected capacity change from 0 to 2048 [ 114.949392][ T5300] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 114.973403][ T5299] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5299] creat("./file2", 040) = 4 [pid 5299] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5299] exit_group(0) = ? [pid 5299] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5299, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./136", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./136", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./136/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./136/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./136/binderfs") = 0 [ 114.984126][ T5299] Remounting filesystem read-only [ 114.989516][ T5299] NILFS (loop0): error -5 truncating bmap (ino=16) [ 114.999721][ T5299] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 115.010089][ T5299] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 115.021659][ T5299] NILFS (loop0): error -5 truncating bmap (ino=16) [ 115.039484][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 115.046939][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 115.054727][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 115.064203][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 115.073947][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./136/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./136/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./136/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./136/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./136/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./136/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./136") = 0 mkdir("./137", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5301 [ 115.084337][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer ./strace-static-x86_64: Process 5301 attached [pid 5301] set_robust_list(0x555556375660, 24) = 0 [pid 5301] chdir("./137") = 0 [pid 5301] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5301] setpgid(0, 0) = 0 [pid 5301] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5301] write(3, "1000", 4) = 4 [pid 5301] close(3) = 0 [pid 5301] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5301] memfd_create("syzkaller", 0) = 3 [pid 5301] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5301] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5301] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5301] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5301] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5301] close(3) = 0 [pid 5301] mkdir("./file0", 0777) = 0 [pid 5301] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5301] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5301] chdir("./file0") = 0 [pid 5301] ioctl(4, LOOP_CLR_FD) = 0 [pid 5301] close(4) = 0 [ 115.166087][ T5301] loop0: detected capacity change from 0 to 2048 [ 115.182310][ T5302] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 115.206489][ T5301] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5301] creat("./file2", 040) = 4 [pid 5301] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5301] exit_group(0) = ? [pid 5301] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5301, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./137", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./137", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./137/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./137/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./137/binderfs") = 0 [ 115.221570][ T5301] Remounting filesystem read-only [ 115.227276][ T5301] NILFS (loop0): error -5 truncating bmap (ino=16) [ 115.241163][ T5301] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 115.251214][ T5301] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 115.260689][ T5301] NILFS (loop0): error -5 truncating bmap (ino=16) [ 115.278157][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 115.285343][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 115.294467][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 115.303869][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 115.313493][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./137/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./137/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./137/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./137/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./137/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./137/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./137") = 0 mkdir("./138", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5303 ./strace-static-x86_64: Process 5303 attached [pid 5303] set_robust_list(0x555556375660, 24) = 0 [pid 5303] chdir("./138") = 0 [pid 5303] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5303] setpgid(0, 0) = 0 [pid 5303] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5303] write(3, "1000", 4) = 4 [pid 5303] close(3) = 0 [pid 5303] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5303] memfd_create("syzkaller", 0) = 3 [pid 5303] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 115.324487][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5303] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5303] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5303] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5303] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5303] close(3) = 0 [pid 5303] mkdir("./file0", 0777) = 0 [pid 5303] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5303] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5303] chdir("./file0") = 0 [pid 5303] ioctl(4, LOOP_CLR_FD) = 0 [pid 5303] close(4) = 0 [ 115.405546][ T5303] loop0: detected capacity change from 0 to 2048 [ 115.426630][ T5304] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5303] creat("./file2", 040) = 4 [pid 5303] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5303] exit_group(0) = ? [pid 5303] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5303, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./138", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./138", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./138/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./138/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./138/binderfs") = 0 [ 115.447123][ T5303] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 115.457905][ T5303] Remounting filesystem read-only [ 115.463698][ T5303] NILFS (loop0): error -5 truncating bmap (ino=16) [ 115.471326][ T5303] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 115.481734][ T5303] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 115.491235][ T5303] NILFS (loop0): error -5 truncating bmap (ino=16) [ 115.508810][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 115.516766][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 115.525179][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 115.534957][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 115.548202][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./138/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./138/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./138/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./138/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./138/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./138/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./138") = 0 mkdir("./139", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5305 ./strace-static-x86_64: Process 5305 attached [pid 5305] set_robust_list(0x555556375660, 24) = 0 [pid 5305] chdir("./139") = 0 [pid 5305] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5305] setpgid(0, 0) = 0 [pid 5305] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5305] write(3, "1000", 4) = 4 [pid 5305] close(3) = 0 [pid 5305] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5305] memfd_create("syzkaller", 0) = 3 [pid 5305] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 115.557956][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5305] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5305] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5305] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5305] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5305] close(3) = 0 [pid 5305] mkdir("./file0", 0777) = 0 [pid 5305] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5305] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5305] chdir("./file0") = 0 [pid 5305] ioctl(4, LOOP_CLR_FD) = 0 [pid 5305] close(4) = 0 [ 115.624016][ T5305] loop0: detected capacity change from 0 to 2048 [ 115.640353][ T5306] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5305] creat("./file2", 040) = 4 [ 115.665974][ T5305] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 115.683103][ T5305] Remounting filesystem read-only [ 115.688449][ T5305] NILFS (loop0): error -5 truncating bmap (ino=16) [ 115.696763][ T5305] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 115.707798][ T5305] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5305] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5305] exit_group(0) = ? [pid 5305] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5305, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./139", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./139", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./139/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./139/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./139/binderfs") = 0 [ 115.717447][ T5305] NILFS (loop0): error -5 truncating bmap (ino=16) [ 115.737550][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 115.745819][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 115.753424][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 115.762628][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./139/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./139/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./139/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./139/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./139/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./139/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./139") = 0 mkdir("./140", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5307 ./strace-static-x86_64: Process 5307 attached [pid 5307] set_robust_list(0x555556375660, 24) = 0 [pid 5307] chdir("./140") = 0 [pid 5307] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5307] setpgid(0, 0) = 0 [ 115.771596][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 115.781874][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5307] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5307] write(3, "1000", 4) = 4 [pid 5307] close(3) = 0 [pid 5307] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5307] memfd_create("syzkaller", 0) = 3 [pid 5307] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5307] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5307] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5307] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5307] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5307] close(3) = 0 [pid 5307] mkdir("./file0", 0777) = 0 [pid 5307] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5307] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5307] chdir("./file0") = 0 [pid 5307] ioctl(4, LOOP_CLR_FD) = 0 [pid 5307] close(4) = 0 [ 115.865822][ T5307] loop0: detected capacity change from 0 to 2048 [ 115.883396][ T5308] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 115.898398][ T5307] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5307] creat("./file2", 040) = 4 [pid 5307] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5307] exit_group(0) = ? [pid 5307] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5307, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./140", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./140", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./140/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./140/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./140/binderfs") = 0 [ 115.922160][ T5307] Remounting filesystem read-only [ 115.927352][ T5307] NILFS (loop0): error -5 truncating bmap (ino=16) [ 115.935351][ T5307] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 115.946200][ T5307] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 115.955711][ T5307] NILFS (loop0): error -5 truncating bmap (ino=16) [ 115.972459][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 115.979591][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 115.987810][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 115.996923][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 116.006800][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./140/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./140/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./140/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./140/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./140/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./140/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./140") = 0 mkdir("./141", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5309 ./strace-static-x86_64: Process 5309 attached [pid 5309] set_robust_list(0x555556375660, 24) = 0 [pid 5309] chdir("./141") = 0 [pid 5309] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5309] setpgid(0, 0) = 0 [pid 5309] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5309] write(3, "1000", 4) = 4 [pid 5309] close(3) = 0 [pid 5309] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5309] memfd_create("syzkaller", 0) = 3 [ 116.016080][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5309] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5309] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5309] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5309] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5309] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5309] close(3) = 0 [pid 5309] mkdir("./file0", 0777) = 0 [pid 5309] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5309] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5309] chdir("./file0") = 0 [pid 5309] ioctl(4, LOOP_CLR_FD) = 0 [pid 5309] close(4) = 0 [ 116.089298][ T5309] loop0: detected capacity change from 0 to 2048 [ 116.105879][ T5310] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 116.122761][ T5309] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5309] creat("./file2", 040) = 4 [pid 5309] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5309] exit_group(0) = ? [pid 5309] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5309, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./141", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./141", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./141/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./141/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./141/binderfs") = 0 [ 116.135046][ T5309] Remounting filesystem read-only [ 116.140339][ T5309] NILFS (loop0): error -5 truncating bmap (ino=16) [ 116.149754][ T5309] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 116.160325][ T5309] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 116.169821][ T5309] NILFS (loop0): error -5 truncating bmap (ino=16) [ 116.186072][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 116.193908][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 116.202207][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 116.211767][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 116.221364][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./141/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./141/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./141/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./141/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./141/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./141/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./141") = 0 mkdir("./142", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5311 ./strace-static-x86_64: Process 5311 attached [pid 5311] set_robust_list(0x555556375660, 24) = 0 [pid 5311] chdir("./142") = 0 [pid 5311] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5311] setpgid(0, 0) = 0 [ 116.232172][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5311] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5311] write(3, "1000", 4) = 4 [pid 5311] close(3) = 0 [pid 5311] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5311] memfd_create("syzkaller", 0) = 3 [pid 5311] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5311] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5311] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5311] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5311] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5311] close(3) = 0 [pid 5311] mkdir("./file0", 0777) = 0 [pid 5311] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5311] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5311] chdir("./file0") = 0 [pid 5311] ioctl(4, LOOP_CLR_FD) = 0 [pid 5311] close(4) = 0 [ 116.313086][ T5311] loop0: detected capacity change from 0 to 2048 [ 116.332678][ T5312] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5311] creat("./file2", 040) = 4 [pid 5311] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5311] exit_group(0) = ? [pid 5311] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5311, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./142", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./142", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./142/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./142/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./142/binderfs") = 0 [ 116.354932][ T5311] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 116.365730][ T5311] Remounting filesystem read-only [ 116.372176][ T5311] NILFS (loop0): error -5 truncating bmap (ino=16) [ 116.380268][ T5311] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 116.391240][ T5311] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 116.401018][ T5311] NILFS (loop0): error -5 truncating bmap (ino=16) [ 116.417234][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 116.424348][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 116.432061][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 116.440943][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 116.450185][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./142/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./142/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./142/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./142/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./142/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./142/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./142") = 0 mkdir("./143", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5313 ./strace-static-x86_64: Process 5313 attached [pid 5313] set_robust_list(0x555556375660, 24) = 0 [pid 5313] chdir("./143") = 0 [pid 5313] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5313] setpgid(0, 0) = 0 [pid 5313] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5313] write(3, "1000", 4) = 4 [pid 5313] close(3) = 0 [pid 5313] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5313] memfd_create("syzkaller", 0) = 3 [pid 5313] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 116.459892][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5313] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5313] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5313] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5313] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5313] close(3) = 0 [pid 5313] mkdir("./file0", 0777) = 0 [pid 5313] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5313] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5313] chdir("./file0") = 0 [pid 5313] ioctl(4, LOOP_CLR_FD) = 0 [pid 5313] close(4) = 0 [ 116.526817][ T5313] loop0: detected capacity change from 0 to 2048 [ 116.542345][ T5314] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 116.556995][ T5313] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 116.568011][ T5313] Remounting filesystem read-only [pid 5313] creat("./file2", 040) = 4 [pid 5313] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5313] exit_group(0) = ? [pid 5313] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5313, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- umount2("./143", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./143", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./143/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./143/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./143/binderfs") = 0 [ 116.573807][ T5313] NILFS (loop0): error -5 truncating bmap (ino=16) [ 116.582425][ T5313] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 116.592593][ T5313] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 116.605096][ T5313] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./143/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./143/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./143/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./143/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./143/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./143/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./143") = 0 mkdir("./144", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 116.621919][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 116.628994][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 116.636456][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 116.645403][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 116.654459][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 116.663870][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5315 ./strace-static-x86_64: Process 5315 attached [pid 5315] set_robust_list(0x555556375660, 24) = 0 [pid 5315] chdir("./144") = 0 [pid 5315] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5315] setpgid(0, 0) = 0 [pid 5315] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5315] write(3, "1000", 4) = 4 [pid 5315] close(3) = 0 [pid 5315] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5315] memfd_create("syzkaller", 0) = 3 [pid 5315] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5315] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5315] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5315] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5315] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5315] close(3) = 0 [pid 5315] mkdir("./file0", 0777) = 0 [pid 5315] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5315] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5315] chdir("./file0") = 0 [pid 5315] ioctl(4, LOOP_CLR_FD) = 0 [pid 5315] close(4) = 0 [ 116.740428][ T5315] loop0: detected capacity change from 0 to 2048 [ 116.760721][ T5316] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5315] creat("./file2", 040) = 4 [ 116.787782][ T5315] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 116.802492][ T5315] Remounting filesystem read-only [ 116.807779][ T5315] NILFS (loop0): error -5 truncating bmap (ino=16) [ 116.825956][ T5315] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [pid 5315] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5315] exit_group(0) = ? [pid 5315] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5315, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./144", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./144", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./144/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./144/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./144/binderfs") = 0 [ 116.836301][ T5315] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 116.845734][ T5315] NILFS (loop0): error -5 truncating bmap (ino=16) [ 116.861088][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 116.868187][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 116.875577][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./144/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./144/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./144/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./144/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./144/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./144/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./144") = 0 mkdir("./145", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5317 ./strace-static-x86_64: Process 5317 attached [pid 5317] set_robust_list(0x555556375660, 24) = 0 [pid 5317] chdir("./145") = 0 [pid 5317] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5317] setpgid(0, 0) = 0 [pid 5317] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5317] write(3, "1000", 4) = 4 [pid 5317] close(3) = 0 [pid 5317] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5317] memfd_create("syzkaller", 0) = 3 [pid 5317] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 116.884523][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 116.893488][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 116.902590][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5317] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5317] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5317] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5317] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5317] close(3) = 0 [pid 5317] mkdir("./file0", 0777) = 0 [pid 5317] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5317] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5317] chdir("./file0") = 0 [pid 5317] ioctl(4, LOOP_CLR_FD) = 0 [pid 5317] close(4) = 0 [ 116.969934][ T5317] loop0: detected capacity change from 0 to 2048 [ 116.989354][ T5318] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 117.010474][ T5317] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5317] creat("./file2", 040) = 4 [pid 5317] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5317] exit_group(0) = ? [pid 5317] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5317, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./145", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./145", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./145/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./145/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./145/binderfs") = 0 [ 117.021404][ T5317] Remounting filesystem read-only [ 117.027001][ T5317] NILFS (loop0): error -5 truncating bmap (ino=16) [ 117.034654][ T5317] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 117.044650][ T5317] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 117.054000][ T5317] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./145/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./145/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./145/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./145/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./145/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./145/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./145") = 0 mkdir("./146", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5319 [ 117.068895][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 117.076049][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 117.083418][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 117.092358][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 117.101225][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 117.110384][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer ./strace-static-x86_64: Process 5319 attached [pid 5319] set_robust_list(0x555556375660, 24) = 0 [pid 5319] chdir("./146") = 0 [pid 5319] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5319] setpgid(0, 0) = 0 [pid 5319] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5319] write(3, "1000", 4) = 4 [pid 5319] close(3) = 0 [pid 5319] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5319] memfd_create("syzkaller", 0) = 3 [pid 5319] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5319] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5319] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5319] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5319] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5319] close(3) = 0 [pid 5319] mkdir("./file0", 0777) = 0 [pid 5319] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5319] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5319] chdir("./file0") = 0 [pid 5319] ioctl(4, LOOP_CLR_FD) = 0 [pid 5319] close(4) = 0 [ 117.193561][ T5319] loop0: detected capacity change from 0 to 2048 [ 117.209823][ T5320] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 117.226526][ T5319] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 117.236808][ T5319] Remounting filesystem read-only [pid 5319] creat("./file2", 040) = 4 [pid 5319] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5319] exit_group(0) = ? [pid 5319] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5319, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./146", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./146", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./146/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./146/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./146/binderfs") = 0 [ 117.242129][ T5319] NILFS (loop0): error -5 truncating bmap (ino=16) [ 117.250917][ T5319] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 117.261763][ T5319] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 117.271172][ T5319] NILFS (loop0): error -5 truncating bmap (ino=16) [ 117.286614][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./146/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./146/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./146/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./146/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./146/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./146/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./146") = 0 mkdir("./147", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5322 attached [pid 5322] set_robust_list(0x555556375660, 24) = 0 [pid 5322] chdir("./147") = 0 [pid 5322] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5322] setpgid(0, 0) = 0 [pid 5322] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5322] write(3, "1000", 4) = 4 [pid 5322] close(3) = 0 [pid 5322] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5322] memfd_create("syzkaller", 0 [pid 5024] <... clone resumed>, child_tidptr=0x555556375650) = 5322 [pid 5322] <... memfd_create resumed>) = 3 [pid 5322] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 117.293768][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 117.301184][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 117.310809][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 117.320282][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 117.329739][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5322] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5322] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5322] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5322] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5322] close(3) = 0 [pid 5322] mkdir("./file0", 0777) = 0 [pid 5322] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5322] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5322] chdir("./file0") = 0 [pid 5322] ioctl(4, LOOP_CLR_FD) = 0 [pid 5322] close(4) = 0 [ 117.398805][ T5322] loop0: detected capacity change from 0 to 2048 [ 117.414572][ T5323] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 117.433981][ T5322] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5322] creat("./file2", 040) = 4 [pid 5322] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5322] exit_group(0) = ? [pid 5322] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5322, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./147", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./147", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./147/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./147/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./147/binderfs") = 0 [ 117.446480][ T5322] Remounting filesystem read-only [ 117.451765][ T5322] NILFS (loop0): error -5 truncating bmap (ino=16) [ 117.460742][ T5322] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 117.471796][ T5322] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 117.481868][ T5322] NILFS (loop0): error -5 truncating bmap (ino=16) [ 117.499475][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 117.506683][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 117.514381][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 117.524578][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 117.533993][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./147/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./147/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./147/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./147/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./147/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./147/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./147") = 0 mkdir("./148", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 117.543149][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5324 ./strace-static-x86_64: Process 5324 attached [pid 5324] set_robust_list(0x555556375660, 24) = 0 [pid 5324] chdir("./148") = 0 [pid 5324] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5324] setpgid(0, 0) = 0 [pid 5324] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5324] write(3, "1000", 4) = 4 [pid 5324] close(3) = 0 [pid 5324] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5324] memfd_create("syzkaller", 0) = 3 [pid 5324] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5324] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5324] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5324] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5324] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5324] close(3) = 0 [pid 5324] mkdir("./file0", 0777) = 0 [pid 5324] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5324] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5324] chdir("./file0") = 0 [pid 5324] ioctl(4, LOOP_CLR_FD) = 0 [pid 5324] close(4) = 0 [ 117.637661][ T5324] loop0: detected capacity change from 0 to 2048 [ 117.655271][ T5325] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 117.670681][ T5324] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5324] creat("./file2", 040) = 4 [pid 5324] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5324] exit_group(0) = ? [pid 5324] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5324, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./148", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./148", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./148/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./148/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./148/binderfs") = 0 [ 117.684094][ T5324] Remounting filesystem read-only [ 117.689469][ T5324] NILFS (loop0): error -5 truncating bmap (ino=16) [ 117.697521][ T5324] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 117.708139][ T5324] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 117.718081][ T5324] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./148/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./148/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./148/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./148/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./148/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./148/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./148") = 0 mkdir("./149", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5326 ./strace-static-x86_64: Process 5326 attached [pid 5326] set_robust_list(0x555556375660, 24) = 0 [pid 5326] chdir("./149") = 0 [pid 5326] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5326] setpgid(0, 0) = 0 [pid 5326] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5326] write(3, "1000", 4) = 4 [pid 5326] close(3) = 0 [pid 5326] symlink("/dev/binderfs", "./binderfs") = 0 [ 117.734602][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 117.741894][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 117.749743][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 117.758858][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 117.768105][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 117.777500][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5326] memfd_create("syzkaller", 0) = 3 [pid 5326] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5326] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5326] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5326] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5326] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5326] close(3) = 0 [pid 5326] mkdir("./file0", 0777) = 0 [pid 5326] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5326] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5326] chdir("./file0") = 0 [pid 5326] ioctl(4, LOOP_CLR_FD) = 0 [pid 5326] close(4) = 0 [ 117.839648][ T5326] loop0: detected capacity change from 0 to 2048 [ 117.857012][ T5327] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 117.870284][ T5326] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 117.882788][ T5326] Remounting filesystem read-only [pid 5326] creat("./file2", 040) = 4 [pid 5326] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5326] exit_group(0) = ? [pid 5326] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5326, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./149", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./149", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./149/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./149/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./149/binderfs") = 0 [ 117.888005][ T5326] NILFS (loop0): error -5 truncating bmap (ino=16) [ 117.896099][ T5326] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 117.907099][ T5326] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 117.916701][ T5326] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./149/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./149/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./149/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./149/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./149/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./149/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./149") = 0 mkdir("./150", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5328 ./strace-static-x86_64: Process 5328 attached [pid 5328] set_robust_list(0x555556375660, 24) = 0 [pid 5328] chdir("./150") = 0 [pid 5328] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5328] setpgid(0, 0) = 0 [pid 5328] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5328] write(3, "1000", 4) = 4 [pid 5328] close(3) = 0 [pid 5328] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5328] memfd_create("syzkaller", 0) = 3 [pid 5328] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 117.936963][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 117.944235][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 117.951619][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 117.960529][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 117.969494][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 117.978732][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5328] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5328] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5328] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5328] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5328] close(3) = 0 [pid 5328] mkdir("./file0", 0777) = 0 [pid 5328] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5328] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5328] chdir("./file0") = 0 [pid 5328] ioctl(4, LOOP_CLR_FD) = 0 [pid 5328] close(4) = 0 [ 118.049808][ T5328] loop0: detected capacity change from 0 to 2048 [ 118.065839][ T5329] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 118.084510][ T5328] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5328] creat("./file2", 040) = 4 [pid 5328] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5328] exit_group(0) = ? [pid 5328] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5328, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./150", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./150", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./150/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./150/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./150/binderfs") = 0 [ 118.095185][ T5328] Remounting filesystem read-only [ 118.102524][ T5328] NILFS (loop0): error -5 truncating bmap (ino=16) [ 118.113613][ T5328] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 118.123836][ T5328] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 118.134308][ T5328] NILFS (loop0): error -5 truncating bmap (ino=16) [ 118.151331][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 118.158584][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 118.166837][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 118.176229][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 118.185806][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./150/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./150/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./150/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./150/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./150/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./150/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./150") = 0 mkdir("./151", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5330 ./strace-static-x86_64: Process 5330 attached [pid 5330] set_robust_list(0x555556375660, 24) = 0 [pid 5330] chdir("./151") = 0 [pid 5330] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5330] setpgid(0, 0) = 0 [pid 5330] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5330] write(3, "1000", 4) = 4 [pid 5330] close(3) = 0 [pid 5330] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5330] memfd_create("syzkaller", 0) = 3 [pid 5330] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 118.195475][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5330] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5330] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5330] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5330] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5330] close(3) = 0 [pid 5330] mkdir("./file0", 0777) = 0 [pid 5330] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5330] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5330] chdir("./file0") = 0 [pid 5330] ioctl(4, LOOP_CLR_FD) = 0 [pid 5330] close(4) = 0 [ 118.257153][ T5330] loop0: detected capacity change from 0 to 2048 [ 118.273627][ T5331] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 118.294308][ T5330] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5330] creat("./file2", 040) = 4 [pid 5330] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5330] exit_group(0) = ? [pid 5330] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5330, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./151", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./151", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./151/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./151/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./151/binderfs") = 0 [ 118.305050][ T5330] Remounting filesystem read-only [ 118.310343][ T5330] NILFS (loop0): error -5 truncating bmap (ino=16) [ 118.319620][ T5330] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 118.330483][ T5330] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 118.340734][ T5330] NILFS (loop0): error -5 truncating bmap (ino=16) [ 118.355569][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 118.363067][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 118.370393][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 118.379508][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 118.389361][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./151/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./151/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./151/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./151/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./151/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./151/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./151") = 0 mkdir("./152", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5332 ./strace-static-x86_64: Process 5332 attached [pid 5332] set_robust_list(0x555556375660, 24) = 0 [pid 5332] chdir("./152") = 0 [ 118.399370][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5332] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5332] setpgid(0, 0) = 0 [pid 5332] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5332] write(3, "1000", 4) = 4 [pid 5332] close(3) = 0 [pid 5332] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5332] memfd_create("syzkaller", 0) = 3 [pid 5332] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5332] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5332] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5332] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5332] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5332] close(3) = 0 [pid 5332] mkdir("./file0", 0777) = 0 [pid 5332] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5332] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5332] chdir("./file0") = 0 [pid 5332] ioctl(4, LOOP_CLR_FD) = 0 [pid 5332] close(4) = 0 [ 118.481250][ T5332] loop0: detected capacity change from 0 to 2048 [ 118.498554][ T5333] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 118.519074][ T5332] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5332] creat("./file2", 040) = 4 [pid 5332] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5332] exit_group(0) = ? [pid 5332] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5332, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./152", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./152", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./152/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./152/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./152/binderfs") = 0 [ 118.535029][ T5332] Remounting filesystem read-only [ 118.540126][ T5332] NILFS (loop0): error -5 truncating bmap (ino=16) [ 118.556101][ T5332] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 118.566410][ T5332] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 118.576064][ T5332] NILFS (loop0): error -5 truncating bmap (ino=16) [ 118.590636][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 118.597807][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 118.605925][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 118.615231][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 118.624808][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./152/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./152/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./152/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./152/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./152/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./152/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./152") = 0 mkdir("./153", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5335 attached [pid 5335] set_robust_list(0x555556375660, 24) = 0 [pid 5335] chdir("./153") = 0 [pid 5335] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5335] setpgid(0, 0) = 0 [pid 5335] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5024] <... clone resumed>, child_tidptr=0x555556375650) = 5335 [pid 5335] <... openat resumed>) = 3 [pid 5335] write(3, "1000", 4) = 4 [pid 5335] close(3) = 0 [pid 5335] symlink("/dev/binderfs", "./binderfs") = 0 [ 118.634108][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5335] memfd_create("syzkaller", 0) = 3 [pid 5335] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5335] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5335] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5335] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5335] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5335] close(3) = 0 [pid 5335] mkdir("./file0", 0777) = 0 [pid 5335] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5335] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5335] chdir("./file0") = 0 [pid 5335] ioctl(4, LOOP_CLR_FD) = 0 [pid 5335] close(4) = 0 [ 118.707985][ T5335] loop0: detected capacity change from 0 to 2048 [ 118.725739][ T5336] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 118.741190][ T5335] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 118.751817][ T5335] Remounting filesystem read-only [pid 5335] creat("./file2", 040) = 4 [pid 5335] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5335] exit_group(0) = ? [pid 5335] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5335, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./153", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./153", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./153/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./153/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./153/binderfs") = 0 [ 118.758197][ T5335] NILFS (loop0): error -5 truncating bmap (ino=16) [ 118.767393][ T5335] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 118.777784][ T5335] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 118.788153][ T5335] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./153/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./153/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./153/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./153/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./153/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./153/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./153") = 0 mkdir("./154", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5337 ./strace-static-x86_64: Process 5337 attached [pid 5337] set_robust_list(0x555556375660, 24) = 0 [pid 5337] chdir("./154") = 0 [pid 5337] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5337] setpgid(0, 0) = 0 [pid 5337] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5337] write(3, "1000", 4) = 4 [pid 5337] close(3) = 0 [pid 5337] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5337] memfd_create("syzkaller", 0) = 3 [pid 5337] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 118.803518][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 118.810688][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 118.818234][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 118.827549][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 118.836804][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 118.846079][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5337] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5337] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5337] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5337] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5337] close(3) = 0 [pid 5337] mkdir("./file0", 0777) = 0 [pid 5337] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5337] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5337] chdir("./file0") = 0 [pid 5337] ioctl(4, LOOP_CLR_FD) = 0 [pid 5337] close(4) = 0 [ 118.915644][ T5337] loop0: detected capacity change from 0 to 2048 [ 118.934404][ T5339] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 118.952097][ T5337] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5337] creat("./file2", 040) = 4 [pid 5337] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5337] exit_group(0) = ? [pid 5337] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5337, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./154", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./154", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./154/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./154/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./154/binderfs") = 0 [ 118.962469][ T5337] Remounting filesystem read-only [ 118.968503][ T5337] NILFS (loop0): error -5 truncating bmap (ino=16) [ 118.978518][ T5337] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 118.988880][ T5337] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 118.998414][ T5337] NILFS (loop0): error -5 truncating bmap (ino=16) [ 119.020487][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 119.027828][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 119.035538][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 119.044850][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 119.053989][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./154/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./154/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./154/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./154/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./154/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./154/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./154") = 0 mkdir("./155", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5340 ./strace-static-x86_64: Process 5340 attached [pid 5340] set_robust_list(0x555556375660, 24) = 0 [pid 5340] chdir("./155") = 0 [pid 5340] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5340] setpgid(0, 0) = 0 [pid 5340] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5340] write(3, "1000", 4) = 4 [pid 5340] close(3) = 0 [pid 5340] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5340] memfd_create("syzkaller", 0) = 3 [pid 5340] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 119.063480][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5340] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5340] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5340] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5340] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5340] close(3) = 0 [pid 5340] mkdir("./file0", 0777) = 0 [pid 5340] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5340] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5340] chdir("./file0") = 0 [pid 5340] ioctl(4, LOOP_CLR_FD) = 0 [pid 5340] close(4) = 0 [ 119.125471][ T5340] loop0: detected capacity change from 0 to 2048 [ 119.142028][ T5341] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 119.153481][ T5340] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 119.164039][ T5340] Remounting filesystem read-only [pid 5340] creat("./file2", 040) = 4 [pid 5340] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5340] exit_group(0) = ? [pid 5340] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5340, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./155", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./155", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./155/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./155/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./155/binderfs") = 0 [ 119.169772][ T5340] NILFS (loop0): error -5 truncating bmap (ino=16) [ 119.177999][ T5340] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 119.188472][ T5340] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 119.200551][ T5340] NILFS (loop0): error -5 truncating bmap (ino=16) [ 119.245779][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 119.253589][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 119.261791][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 119.270989][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 119.280280][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./155/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./155/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./155/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./155/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./155/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./155/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./155") = 0 mkdir("./156", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5344 ./strace-static-x86_64: Process 5344 attached [pid 5344] set_robust_list(0x555556375660, 24) = 0 [pid 5344] chdir("./156") = 0 [pid 5344] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5344] setpgid(0, 0) = 0 [pid 5344] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5344] write(3, "1000", 4) = 4 [pid 5344] close(3) = 0 [ 119.290192][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5344] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5344] memfd_create("syzkaller", 0) = 3 [pid 5344] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5344] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5344] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5344] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5344] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5344] close(3) = 0 [pid 5344] mkdir("./file0", 0777) = 0 [pid 5344] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5344] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5344] chdir("./file0") = 0 [pid 5344] ioctl(4, LOOP_CLR_FD) = 0 [pid 5344] close(4) = 0 [ 119.361922][ T5344] loop0: detected capacity change from 0 to 2048 [ 119.378780][ T5345] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 119.389784][ T5344] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 119.400567][ T5344] Remounting filesystem read-only [pid 5344] creat("./file2", 040) = 4 [pid 5344] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5344] exit_group(0) = ? [pid 5344] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5344, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- umount2("./156", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./156", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./156/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./156/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./156/binderfs") = 0 [ 119.407899][ T5344] NILFS (loop0): error -5 truncating bmap (ino=16) [ 119.418276][ T5344] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 119.428925][ T5344] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 119.438703][ T5344] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./156/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./156/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./156/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./156/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./156/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./156/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./156") = 0 mkdir("./157", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 119.458205][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 119.466846][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 119.474612][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 119.484091][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 119.493483][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 119.503359][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5346 ./strace-static-x86_64: Process 5346 attached [pid 5346] set_robust_list(0x555556375660, 24) = 0 [pid 5346] chdir("./157") = 0 [pid 5346] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5346] setpgid(0, 0) = 0 [pid 5346] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5346] write(3, "1000", 4) = 4 [pid 5346] close(3) = 0 [pid 5346] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5346] memfd_create("syzkaller", 0) = 3 [pid 5346] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5346] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5346] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5346] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5346] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5346] close(3) = 0 [pid 5346] mkdir("./file0", 0777) = 0 [pid 5346] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5346] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5346] chdir("./file0") = 0 [pid 5346] ioctl(4, LOOP_CLR_FD) = 0 [pid 5346] close(4) = 0 [ 119.590409][ T5346] loop0: detected capacity change from 0 to 2048 [ 119.607418][ T5347] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 119.621150][ T5346] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 119.632646][ T5346] Remounting filesystem read-only [pid 5346] creat("./file2", 040) = 4 [pid 5346] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5346] exit_group(0) = ? [pid 5346] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5346, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./157", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./157", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./157/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./157/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./157/binderfs") = 0 [ 119.641536][ T5346] NILFS (loop0): error -5 truncating bmap (ino=16) [ 119.649443][ T5346] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 119.659894][ T5346] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 119.669203][ T5346] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./157/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./157/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./157/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./157/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./157/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./157/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./157") = 0 mkdir("./158", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 119.688739][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 119.696092][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 119.704372][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 119.713436][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 119.723163][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 119.732378][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5348 ./strace-static-x86_64: Process 5348 attached [pid 5348] set_robust_list(0x555556375660, 24) = 0 [pid 5348] chdir("./158") = 0 [pid 5348] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5348] setpgid(0, 0) = 0 [pid 5348] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5348] write(3, "1000", 4) = 4 [pid 5348] close(3) = 0 [pid 5348] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5348] memfd_create("syzkaller", 0) = 3 [pid 5348] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5348] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5348] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5348] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5348] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5348] close(3) = 0 [pid 5348] mkdir("./file0", 0777) = 0 [pid 5348] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5348] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5348] chdir("./file0") = 0 [pid 5348] ioctl(4, LOOP_CLR_FD) = 0 [pid 5348] close(4) = 0 [pid 5348] creat("./file2", 040) = 4 [ 119.814123][ T5348] loop0: detected capacity change from 0 to 2048 [ 119.828770][ T5349] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 119.836979][ T5348] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 119.849899][ T5348] Remounting filesystem read-only [ 119.856143][ T5348] NILFS (loop0): error -5 truncating bmap (ino=16) [pid 5348] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5348] exit_group(0) = ? [pid 5348] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5348, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./158", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./158", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./158/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./158/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./158/binderfs") = 0 [ 119.864295][ T5348] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 119.874717][ T5348] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 119.884668][ T5348] NILFS (loop0): error -5 truncating bmap (ino=16) [ 119.901736][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./158/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./158/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./158/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./158/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./158/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./158/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./158") = 0 mkdir("./159", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 119.909260][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 119.916656][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 119.925633][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 119.934565][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 119.943702][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5351 ./strace-static-x86_64: Process 5351 attached [pid 5351] set_robust_list(0x555556375660, 24) = 0 [pid 5351] chdir("./159") = 0 [pid 5351] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5351] setpgid(0, 0) = 0 [pid 5351] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5351] write(3, "1000", 4) = 4 [pid 5351] close(3) = 0 [pid 5351] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5351] memfd_create("syzkaller", 0) = 3 [pid 5351] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5351] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5351] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5351] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5351] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5351] close(3) = 0 [pid 5351] mkdir("./file0", 0777) = 0 [pid 5351] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5351] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5351] chdir("./file0") = 0 [pid 5351] ioctl(4, LOOP_CLR_FD) = 0 [pid 5351] close(4) = 0 [pid 5351] creat("./file2", 040) = 4 [ 120.034712][ T5351] loop0: detected capacity change from 0 to 2048 [ 120.050457][ T5352] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 120.058019][ T5351] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 120.072820][ T5351] Remounting filesystem read-only [ 120.078210][ T5351] NILFS (loop0): error -5 truncating bmap (ino=16) [pid 5351] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5351] exit_group(0) = ? [pid 5351] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5351, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./159", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./159", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./159/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./159/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./159/binderfs") = 0 [ 120.091313][ T5351] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 120.102005][ T5351] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 120.113401][ T5351] NILFS (loop0): error -5 truncating bmap (ino=16) [ 120.133085][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./159/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./159/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./159/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./159/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./159/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./159/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./159") = 0 mkdir("./160", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 [ 120.140085][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 120.148076][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 120.157669][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 120.166974][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 120.176387][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5353 attached [pid 5353] set_robust_list(0x555556375660, 24 [pid 5024] <... clone resumed>, child_tidptr=0x555556375650) = 5353 [pid 5353] <... set_robust_list resumed>) = 0 [pid 5353] chdir("./160") = 0 [pid 5353] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5353] setpgid(0, 0) = 0 [pid 5353] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5353] write(3, "1000", 4) = 4 [pid 5353] close(3) = 0 [pid 5353] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5353] memfd_create("syzkaller", 0) = 3 [pid 5353] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5353] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5353] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5353] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5353] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5353] close(3) = 0 [pid 5353] mkdir("./file0", 0777) = 0 [pid 5353] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5353] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5353] chdir("./file0") = 0 [pid 5353] ioctl(4, LOOP_CLR_FD) = 0 [pid 5353] close(4) = 0 [ 120.262777][ T5353] loop0: detected capacity change from 0 to 2048 [ 120.280791][ T5354] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5353] creat("./file2", 040) = 4 [pid 5353] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5353] exit_group(0) = ? [pid 5353] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5353, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./160", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./160", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./160/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./160/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./160/binderfs") = 0 [ 120.304016][ T5353] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 120.314353][ T5353] Remounting filesystem read-only [ 120.319847][ T5353] NILFS (loop0): error -5 truncating bmap (ino=16) [ 120.327633][ T5353] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 120.339163][ T5353] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 120.348689][ T5353] NILFS (loop0): error -5 truncating bmap (ino=16) [ 120.365059][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 120.372700][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 120.380228][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 120.389763][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 120.398827][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./160/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./160/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./160/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./160/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./160/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./160/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./160") = 0 mkdir("./161", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5355 ./strace-static-x86_64: Process 5355 attached [pid 5355] set_robust_list(0x555556375660, 24) = 0 [pid 5355] chdir("./161") = 0 [pid 5355] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5355] setpgid(0, 0) = 0 [ 120.409882][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5355] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5355] write(3, "1000", 4) = 4 [pid 5355] close(3) = 0 [pid 5355] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5355] memfd_create("syzkaller", 0) = 3 [pid 5355] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5355] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5355] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5355] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5355] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5355] close(3) = 0 [pid 5355] mkdir("./file0", 0777) = 0 [pid 5355] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5355] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5355] chdir("./file0") = 0 [pid 5355] ioctl(4, LOOP_CLR_FD) = 0 [pid 5355] close(4) = 0 [ 120.487076][ T5355] loop0: detected capacity change from 0 to 2048 [ 120.504163][ T5356] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 120.518731][ T5355] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 120.530329][ T5355] Remounting filesystem read-only [pid 5355] creat("./file2", 040) = 4 [pid 5355] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5355] exit_group(0) = ? [pid 5355] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5355, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./161", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./161", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./161/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./161/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./161/binderfs") = 0 [ 120.536011][ T5355] NILFS (loop0): error -5 truncating bmap (ino=16) [ 120.543624][ T5355] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 120.553880][ T5355] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 120.563166][ T5355] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./161/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./161/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./161/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./161/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./161/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./161/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./161") = 0 mkdir("./162", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 120.583061][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 120.590118][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 120.599240][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 120.608898][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 120.618691][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 120.628498][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5357 ./strace-static-x86_64: Process 5357 attached [pid 5357] set_robust_list(0x555556375660, 24) = 0 [pid 5357] chdir("./162") = 0 [pid 5357] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5357] setpgid(0, 0) = 0 [pid 5357] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5357] write(3, "1000", 4) = 4 [pid 5357] close(3) = 0 [pid 5357] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5357] memfd_create("syzkaller", 0) = 3 [pid 5357] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5357] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5357] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5357] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5357] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5357] close(3) = 0 [pid 5357] mkdir("./file0", 0777) = 0 [pid 5357] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5357] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5357] chdir("./file0") = 0 [pid 5357] ioctl(4, LOOP_CLR_FD) = 0 [pid 5357] close(4) = 0 [ 120.706128][ T5357] loop0: detected capacity change from 0 to 2048 [ 120.721166][ T5358] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 120.738759][ T5357] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 120.749004][ T5357] Remounting filesystem read-only [pid 5357] creat("./file2", 040) = 4 [pid 5357] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5357] exit_group(0) = ? [pid 5357] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5357, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./162", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./162", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./162/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./162/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./162/binderfs") = 0 [ 120.755064][ T5357] NILFS (loop0): error -5 truncating bmap (ino=16) [ 120.770544][ T5357] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 120.780995][ T5357] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 120.792055][ T5357] NILFS (loop0): error -5 truncating bmap (ino=16) [ 120.812019][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 120.819343][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 120.826813][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 120.836865][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 120.846053][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./162/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./162/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./162/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./162/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./162/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./162/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./162") = 0 mkdir("./163", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5359 ./strace-static-x86_64: Process 5359 attached [pid 5359] set_robust_list(0x555556375660, 24) = 0 [ 120.855213][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5359] chdir("./163") = 0 [pid 5359] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5359] setpgid(0, 0) = 0 [pid 5359] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5359] write(3, "1000", 4) = 4 [pid 5359] close(3) = 0 [pid 5359] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5359] memfd_create("syzkaller", 0) = 3 [pid 5359] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5359] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5359] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5359] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5359] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5359] close(3) = 0 [pid 5359] mkdir("./file0", 0777) = 0 [pid 5359] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5359] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5359] chdir("./file0") = 0 [pid 5359] ioctl(4, LOOP_CLR_FD) = 0 [pid 5359] close(4) = 0 [ 120.930969][ T5359] loop0: detected capacity change from 0 to 2048 [ 120.946601][ T5360] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 120.955439][ T5359] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 120.967242][ T5359] Remounting filesystem read-only [pid 5359] creat("./file2", 040) = 4 [pid 5359] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5359] exit_group(0) = ? [pid 5359] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5359, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./163", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./163", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./163/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./163/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./163/binderfs") = 0 [ 120.977606][ T5359] NILFS (loop0): error -5 truncating bmap (ino=16) [ 120.985322][ T5359] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 120.995622][ T5359] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 121.005560][ T5359] NILFS (loop0): error -5 truncating bmap (ino=16) [ 121.020906][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./163/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./163/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./163/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./163/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./163/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./163/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./163") = 0 mkdir("./164", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5361 ./strace-static-x86_64: Process 5361 attached [pid 5361] set_robust_list(0x555556375660, 24) = 0 [pid 5361] chdir("./164") = 0 [pid 5361] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5361] setpgid(0, 0) = 0 [pid 5361] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5361] write(3, "1000", 4) = 4 [pid 5361] close(3) = 0 [pid 5361] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5361] memfd_create("syzkaller", 0) = 3 [pid 5361] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 121.028235][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 121.035909][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 121.045841][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 121.054825][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 121.064355][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5361] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5361] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5361] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5361] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5361] close(3) = 0 [pid 5361] mkdir("./file0", 0777) = 0 [pid 5361] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5361] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5361] chdir("./file0") = 0 [pid 5361] ioctl(4, LOOP_CLR_FD) = 0 [pid 5361] close(4) = 0 [ 121.125959][ T5361] loop0: detected capacity change from 0 to 2048 [ 121.143654][ T5362] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5361] creat("./file2", 040) = 4 [pid 5361] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5361] exit_group(0) = ? [pid 5361] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5361, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./164", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./164", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./164/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./164/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./164/binderfs") = 0 [ 121.173465][ T5361] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 121.184422][ T5361] Remounting filesystem read-only [ 121.189872][ T5361] NILFS (loop0): error -5 truncating bmap (ino=16) [ 121.197983][ T5361] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 121.209504][ T5361] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 121.219516][ T5361] NILFS (loop0): error -5 truncating bmap (ino=16) [ 121.235663][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 121.242737][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 121.250158][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 121.259920][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 121.269193][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./164/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./164/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./164/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./164/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./164/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./164/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./164") = 0 mkdir("./165", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5363 ./strace-static-x86_64: Process 5363 attached [pid 5363] set_robust_list(0x555556375660, 24) = 0 [ 121.278439][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5363] chdir("./165") = 0 [pid 5363] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5363] setpgid(0, 0) = 0 [pid 5363] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5363] write(3, "1000", 4) = 4 [pid 5363] close(3) = 0 [pid 5363] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5363] memfd_create("syzkaller", 0) = 3 [pid 5363] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5363] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5363] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5363] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5363] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5363] close(3) = 0 [pid 5363] mkdir("./file0", 0777) = 0 [pid 5363] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5363] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5363] chdir("./file0") = 0 [pid 5363] ioctl(4, LOOP_CLR_FD) = 0 [pid 5363] close(4) = 0 [ 121.365807][ T5363] loop0: detected capacity change from 0 to 2048 [ 121.383223][ T5364] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 121.403862][ T5363] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5363] creat("./file2", 040) = 4 [pid 5363] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5363] exit_group(0) = ? [pid 5363] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5363, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./165", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./165", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./165/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./165/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./165/binderfs") = 0 [ 121.417245][ T5363] Remounting filesystem read-only [ 121.424178][ T5363] NILFS (loop0): error -5 truncating bmap (ino=16) [ 121.432266][ T5363] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 121.442444][ T5363] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 121.452660][ T5363] NILFS (loop0): error -5 truncating bmap (ino=16) [ 121.472846][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 121.479884][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 121.487963][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 121.497048][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 121.506729][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./165/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./165/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./165/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./165/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./165/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./165/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./165") = 0 mkdir("./166", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5365 ./strace-static-x86_64: Process 5365 attached [pid 5365] set_robust_list(0x555556375660, 24) = 0 [pid 5365] chdir("./166") = 0 [pid 5365] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5365] setpgid(0, 0) = 0 [pid 5365] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5365] write(3, "1000", 4) = 4 [pid 5365] close(3) = 0 [pid 5365] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5365] memfd_create("syzkaller", 0) = 3 [pid 5365] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 121.516195][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5365] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5365] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5365] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5365] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5365] close(3) = 0 [pid 5365] mkdir("./file0", 0777) = 0 [pid 5365] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5365] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5365] chdir("./file0") = 0 [pid 5365] ioctl(4, LOOP_CLR_FD) = 0 [pid 5365] close(4) = 0 [ 121.583334][ T5365] loop0: detected capacity change from 0 to 2048 [ 121.599130][ T5366] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 121.614229][ T5365] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 121.624831][ T5365] Remounting filesystem read-only [pid 5365] creat("./file2", 040) = 4 [pid 5365] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5365] exit_group(0) = ? [pid 5365] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5365, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./166", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./166", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./166/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./166/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./166/binderfs") = 0 [ 121.629933][ T5365] NILFS (loop0): error -5 truncating bmap (ino=16) [ 121.638244][ T5365] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 121.648745][ T5365] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 121.658495][ T5365] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./166/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./166/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./166/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./166/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./166/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./166/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./166") = 0 mkdir("./167", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 121.677323][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 121.685275][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 121.692835][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 121.702404][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 121.712054][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 121.722905][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5367 attached , child_tidptr=0x555556375650) = 5367 [pid 5367] set_robust_list(0x555556375660, 24) = 0 [pid 5367] chdir("./167") = 0 [pid 5367] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5367] setpgid(0, 0) = 0 [pid 5367] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5367] write(3, "1000", 4) = 4 [pid 5367] close(3) = 0 [pid 5367] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5367] memfd_create("syzkaller", 0) = 3 [pid 5367] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5367] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5367] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5367] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5367] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5367] close(3) = 0 [pid 5367] mkdir("./file0", 0777) = 0 [pid 5367] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5367] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5367] chdir("./file0") = 0 [pid 5367] ioctl(4, LOOP_CLR_FD) = 0 [pid 5367] close(4) = 0 [ 121.808656][ T5367] loop0: detected capacity change from 0 to 2048 [ 121.826067][ T5368] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 121.832590][ T5367] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 121.847689][ T5367] Remounting filesystem read-only [pid 5367] creat("./file2", 040) = 4 [pid 5367] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5367] exit_group(0) = ? [pid 5367] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5367, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./167", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./167", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./167/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./167/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./167/binderfs") = 0 [ 121.853441][ T5367] NILFS (loop0): error -5 truncating bmap (ino=16) [ 121.861288][ T5367] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 121.871869][ T5367] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 121.881090][ T5367] NILFS (loop0): error -5 truncating bmap (ino=16) [ 121.900255][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./167/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./167/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./167/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./167/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./167/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./167/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./167") = 0 mkdir("./168", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5369 ./strace-static-x86_64: Process 5369 attached [pid 5369] set_robust_list(0x555556375660, 24) = 0 [ 121.908206][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 121.917369][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 121.927686][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 121.936864][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 121.946195][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5369] chdir("./168") = 0 [pid 5369] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5369] setpgid(0, 0) = 0 [pid 5369] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5369] write(3, "1000", 4) = 4 [pid 5369] close(3) = 0 [pid 5369] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5369] memfd_create("syzkaller", 0) = 3 [pid 5369] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5369] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5369] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5369] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5369] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5369] close(3) = 0 [pid 5369] mkdir("./file0", 0777) = 0 [pid 5369] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5369] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5369] chdir("./file0") = 0 [pid 5369] ioctl(4, LOOP_CLR_FD) = 0 [pid 5369] close(4) = 0 [ 122.025792][ T5369] loop0: detected capacity change from 0 to 2048 [ 122.042754][ T5370] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5369] creat("./file2", 040) = 4 [ 122.070810][ T5369] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 122.090538][ T5369] Remounting filesystem read-only [ 122.096146][ T5369] NILFS (loop0): error -5 truncating bmap (ino=16) [ 122.105549][ T5369] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [pid 5369] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5369] exit_group(0) = ? [pid 5369] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5369, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./168", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./168", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./168/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./168/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./168/binderfs") = 0 [ 122.116708][ T5369] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 122.127184][ T5369] NILFS (loop0): error -5 truncating bmap (ino=16) [ 122.143270][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 122.150648][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 122.158851][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./168/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./168/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./168/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./168/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./168/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./168/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./168") = 0 mkdir("./169", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5371 ./strace-static-x86_64: Process 5371 attached [pid 5371] set_robust_list(0x555556375660, 24) = 0 [pid 5371] chdir("./169") = 0 [pid 5371] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5371] setpgid(0, 0) = 0 [pid 5371] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5371] write(3, "1000", 4) = 4 [pid 5371] close(3) = 0 [pid 5371] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5371] memfd_create("syzkaller", 0) = 3 [pid 5371] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 122.168492][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 122.177451][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 122.186950][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5371] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5371] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5371] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5371] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5371] close(3) = 0 [pid 5371] mkdir("./file0", 0777) = 0 [pid 5371] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5371] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5371] chdir("./file0") = 0 [pid 5371] ioctl(4, LOOP_CLR_FD) = 0 [pid 5371] close(4) = 0 [ 122.245231][ T5371] loop0: detected capacity change from 0 to 2048 [ 122.262639][ T5372] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 122.275753][ T5371] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 122.286702][ T5371] Remounting filesystem read-only [pid 5371] creat("./file2", 040) = 4 [pid 5371] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5371] exit_group(0) = ? [pid 5371] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5371, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./169", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./169", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./169/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./169/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./169/binderfs") = 0 [ 122.292616][ T5371] NILFS (loop0): error -5 truncating bmap (ino=16) [ 122.308527][ T5371] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 122.318612][ T5371] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 122.328741][ T5371] NILFS (loop0): error -5 truncating bmap (ino=16) [ 122.346878][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 122.354150][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 122.361606][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 122.370598][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 122.379541][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./169/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./169/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./169/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./169/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./169/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./169/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./169") = 0 mkdir("./170", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5373 ./strace-static-x86_64: Process 5373 attached [pid 5373] set_robust_list(0x555556375660, 24) = 0 [pid 5373] chdir("./170") = 0 [pid 5373] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5373] setpgid(0, 0) = 0 [pid 5373] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5373] write(3, "1000", 4) = 4 [pid 5373] close(3) = 0 [pid 5373] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5373] memfd_create("syzkaller", 0) = 3 [pid 5373] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 122.389162][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5373] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5373] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5373] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5373] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5373] close(3) = 0 [pid 5373] mkdir("./file0", 0777) = 0 [pid 5373] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5373] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5373] chdir("./file0") = 0 [pid 5373] ioctl(4, LOOP_CLR_FD) = 0 [pid 5373] close(4) = 0 [ 122.458144][ T5373] loop0: detected capacity change from 0 to 2048 [ 122.476325][ T5374] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 122.492546][ T5373] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5373] creat("./file2", 040) = 4 [pid 5373] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5373] exit_group(0) = ? [pid 5373] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5373, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./170", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./170", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./170/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./170/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./170/binderfs") = 0 [ 122.504130][ T5373] Remounting filesystem read-only [ 122.509709][ T5373] NILFS (loop0): error -5 truncating bmap (ino=16) [ 122.520410][ T5373] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 122.536540][ T5373] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 122.545792][ T5373] NILFS (loop0): error -5 truncating bmap (ino=16) [ 122.563145][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 122.570148][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 122.577790][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 122.587121][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 122.596338][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./170/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./170/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./170/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./170/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./170/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./170/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./170") = 0 mkdir("./171", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5375 ./strace-static-x86_64: Process 5375 attached [pid 5375] set_robust_list(0x555556375660, 24) = 0 [pid 5375] chdir("./171") = 0 [pid 5375] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5375] setpgid(0, 0) = 0 [pid 5375] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5375] write(3, "1000", 4) = 4 [pid 5375] close(3) = 0 [pid 5375] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5375] memfd_create("syzkaller", 0) = 3 [pid 5375] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 122.606590][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5375] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5375] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5375] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5375] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5375] close(3) = 0 [pid 5375] mkdir("./file0", 0777) = 0 [pid 5375] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5375] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5375] chdir("./file0") = 0 [pid 5375] ioctl(4, LOOP_CLR_FD) = 0 [pid 5375] close(4) = 0 [ 122.670898][ T5375] loop0: detected capacity change from 0 to 2048 [ 122.690655][ T5376] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 122.694005][ T5375] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 122.712978][ T5375] Remounting filesystem read-only [pid 5375] creat("./file2", 040) = 4 [pid 5375] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5375] exit_group(0) = ? [pid 5375] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5375, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./171", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./171", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./171/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./171/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./171/binderfs") = 0 [ 122.718366][ T5375] NILFS (loop0): error -5 truncating bmap (ino=16) [ 122.738269][ T5375] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 122.748795][ T5375] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 122.758555][ T5375] NILFS (loop0): error -5 truncating bmap (ino=16) [ 122.776559][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 122.784423][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 122.791823][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 122.802445][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 122.811340][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./171/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./171/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./171/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./171/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./171/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./171/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./171") = 0 mkdir("./172", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5377 ./strace-static-x86_64: Process 5377 attached [pid 5377] set_robust_list(0x555556375660, 24) = 0 [pid 5377] chdir("./172") = 0 [ 122.820647][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5377] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5377] setpgid(0, 0) = 0 [pid 5377] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5377] write(3, "1000", 4) = 4 [pid 5377] close(3) = 0 [pid 5377] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5377] memfd_create("syzkaller", 0) = 3 [pid 5377] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5377] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5377] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5377] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5377] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5377] close(3) = 0 [pid 5377] mkdir("./file0", 0777) = 0 [pid 5377] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5377] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5377] chdir("./file0") = 0 [pid 5377] ioctl(4, LOOP_CLR_FD) = 0 [pid 5377] close(4) = 0 [pid 5377] creat("./file2", 040) = 4 [ 122.904087][ T5377] loop0: detected capacity change from 0 to 2048 [ 122.919779][ T5378] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 122.927979][ T5377] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 122.940635][ T5377] Remounting filesystem read-only [ 122.946231][ T5377] NILFS (loop0): error -5 truncating bmap (ino=16) [pid 5377] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5377] exit_group(0) = ? [pid 5377] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5377, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./172", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./172", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./172/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./172/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./172/binderfs") = 0 [ 122.960817][ T5377] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 122.971098][ T5377] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 122.980763][ T5377] NILFS (loop0): error -5 truncating bmap (ino=16) [ 122.996408][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./172/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./172/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./172/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./172/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./172/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./172/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./172") = 0 mkdir("./173", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5379 ./strace-static-x86_64: Process 5379 attached [pid 5379] set_robust_list(0x555556375660, 24) = 0 [pid 5379] chdir("./173") = 0 [pid 5379] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5379] setpgid(0, 0) = 0 [pid 5379] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5379] write(3, "1000", 4) = 4 [ 123.003780][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 123.012494][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 123.021568][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 123.030487][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 123.039806][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5379] close(3) = 0 [pid 5379] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5379] memfd_create("syzkaller", 0) = 3 [pid 5379] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5379] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5379] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5379] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5379] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5379] close(3) = 0 [pid 5379] mkdir("./file0", 0777) = 0 [pid 5379] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5379] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5379] chdir("./file0") = 0 [pid 5379] ioctl(4, LOOP_CLR_FD) = 0 [pid 5379] close(4) = 0 [ 123.120411][ T5379] loop0: detected capacity change from 0 to 2048 [ 123.139594][ T5380] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 123.153075][ T5379] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 123.163343][ T5379] Remounting filesystem read-only [pid 5379] creat("./file2", 040) = 4 [pid 5379] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5379] exit_group(0) = ? [pid 5379] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5379, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./173", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./173", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./173/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./173/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./173/binderfs") = 0 [ 123.168551][ T5379] NILFS (loop0): error -5 truncating bmap (ino=16) [ 123.176592][ T5379] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 123.187753][ T5379] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 123.197504][ T5379] NILFS (loop0): error -5 truncating bmap (ino=16) [ 123.213512][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./173/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./173/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./173/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./173/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./173/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./173/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./173") = 0 mkdir("./174", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5381 ./strace-static-x86_64: Process 5381 attached [pid 5381] set_robust_list(0x555556375660, 24) = 0 [pid 5381] chdir("./174") = 0 [ 123.220495][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 123.228789][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 123.237756][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 123.246756][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 123.256164][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5381] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5381] setpgid(0, 0) = 0 [pid 5381] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5381] write(3, "1000", 4) = 4 [pid 5381] close(3) = 0 [pid 5381] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5381] memfd_create("syzkaller", 0) = 3 [pid 5381] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5381] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5381] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5381] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5381] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5381] close(3) = 0 [pid 5381] mkdir("./file0", 0777) = 0 [pid 5381] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5381] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5381] chdir("./file0") = 0 [pid 5381] ioctl(4, LOOP_CLR_FD) = 0 [pid 5381] close(4) = 0 [ 123.333851][ T5381] loop0: detected capacity change from 0 to 2048 [ 123.350620][ T5382] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 123.356067][ T5381] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 123.372603][ T5381] Remounting filesystem read-only [pid 5381] creat("./file2", 040) = 4 [pid 5381] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5381] exit_group(0) = ? [pid 5381] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5381, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./174", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./174", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./174/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./174/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./174/binderfs") = 0 [ 123.379043][ T5381] NILFS (loop0): error -5 truncating bmap (ino=16) [ 123.387700][ T5381] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 123.397774][ T5381] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 123.407249][ T5381] NILFS (loop0): error -5 truncating bmap (ino=16) [ 123.424591][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./174/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./174/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./174/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./174/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./174/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./174/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./174") = 0 mkdir("./175", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5383 attached , child_tidptr=0x555556375650) = 5383 [pid 5383] set_robust_list(0x555556375660, 24) = 0 [pid 5383] chdir("./175") = 0 [pid 5383] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [ 123.432173][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 123.439514][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 123.449190][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 123.459041][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 123.469017][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5383] setpgid(0, 0) = 0 [pid 5383] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5383] write(3, "1000", 4) = 4 [pid 5383] close(3) = 0 [pid 5383] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5383] memfd_create("syzkaller", 0) = 3 [pid 5383] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5383] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5383] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5383] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5383] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5383] close(3) = 0 [pid 5383] mkdir("./file0", 0777) = 0 [pid 5383] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5383] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5383] chdir("./file0") = 0 [pid 5383] ioctl(4, LOOP_CLR_FD) = 0 [pid 5383] close(4) = 0 [ 123.548495][ T5383] loop0: detected capacity change from 0 to 2048 [ 123.567018][ T5384] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 123.574718][ T5383] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 123.589899][ T5383] Remounting filesystem read-only [pid 5383] creat("./file2", 040) = 4 [pid 5383] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5383] exit_group(0) = ? [pid 5383] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5383, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./175", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./175", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./175/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./175/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./175/binderfs") = 0 [ 123.600124][ T5383] NILFS (loop0): error -5 truncating bmap (ino=16) [ 123.610219][ T5383] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 123.621233][ T5383] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 123.632419][ T5383] NILFS (loop0): error -5 truncating bmap (ino=16) [ 123.649350][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 123.656549][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 123.664069][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 123.673488][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 123.683045][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./175/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./175/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./175/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./175/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./175/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./175/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./175") = 0 mkdir("./176", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 123.692408][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5385 ./strace-static-x86_64: Process 5385 attached [pid 5385] set_robust_list(0x555556375660, 24) = 0 [pid 5385] chdir("./176") = 0 [pid 5385] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5385] setpgid(0, 0) = 0 [pid 5385] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5385] write(3, "1000", 4) = 4 [pid 5385] close(3) = 0 [pid 5385] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5385] memfd_create("syzkaller", 0) = 3 [pid 5385] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5385] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5385] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5385] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5385] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5385] close(3) = 0 [pid 5385] mkdir("./file0", 0777) = 0 [pid 5385] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5385] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5385] chdir("./file0") = 0 [pid 5385] ioctl(4, LOOP_CLR_FD) = 0 [pid 5385] close(4) = 0 [ 123.768541][ T5385] loop0: detected capacity change from 0 to 2048 [ 123.785605][ T5386] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 123.792654][ T5385] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 123.806877][ T5385] Remounting filesystem read-only [pid 5385] creat("./file2", 040) = 4 [pid 5385] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5385] exit_group(0) = ? [pid 5385] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5385, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./176", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./176", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./176/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./176/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./176/binderfs") = 0 [ 123.813114][ T5385] NILFS (loop0): error -5 truncating bmap (ino=16) [ 123.823088][ T5385] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 123.834380][ T5385] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 123.844463][ T5385] NILFS (loop0): error -5 truncating bmap (ino=16) [ 123.861218][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./176/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./176/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./176/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./176/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./176/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./176/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./176") = 0 mkdir("./177", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5387 ./strace-static-x86_64: Process 5387 attached [pid 5387] set_robust_list(0x555556375660, 24) = 0 [pid 5387] chdir("./177") = 0 [ 123.868297][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 123.876019][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 123.885123][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 123.894338][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 123.903781][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5387] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5387] setpgid(0, 0) = 0 [pid 5387] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5387] write(3, "1000", 4) = 4 [pid 5387] close(3) = 0 [pid 5387] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5387] memfd_create("syzkaller", 0) = 3 [pid 5387] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5387] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5387] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5387] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5387] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5387] close(3) = 0 [pid 5387] mkdir("./file0", 0777) = 0 [pid 5387] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5387] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5387] chdir("./file0") = 0 [pid 5387] ioctl(4, LOOP_CLR_FD) = 0 [pid 5387] close(4) = 0 [ 123.982811][ T5387] loop0: detected capacity change from 0 to 2048 [ 123.999883][ T5388] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 124.011274][ T5387] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 124.021486][ T5387] Remounting filesystem read-only [ 124.026697][ T5387] NILFS (loop0): error -5 truncating bmap (ino=16) [pid 5387] creat("./file2", 040) = 4 [pid 5387] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5387] exit_group(0) = ? [pid 5387] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5387, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./177", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./177", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./177/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./177/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./177/binderfs") = 0 [ 124.035539][ T5387] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 124.045501][ T5387] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 124.054920][ T5387] NILFS (loop0): error -5 truncating bmap (ino=16) [ 124.070188][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 124.077516][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 umount2("./177/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./177/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./177/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./177/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./177/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./177/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./177") = 0 mkdir("./178", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5389 ./strace-static-x86_64: Process 5389 attached [pid 5389] set_robust_list(0x555556375660, 24) = 0 [pid 5389] chdir("./178") = 0 [pid 5389] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5389] setpgid(0, 0) = 0 [pid 5389] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5389] write(3, "1000", 4) = 4 [pid 5389] close(3) = 0 [pid 5389] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5389] memfd_create("syzkaller", 0) = 3 [pid 5389] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 124.085546][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 124.095403][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 124.104650][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 124.119613][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5389] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5389] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5389] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5389] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5389] close(3) = 0 [pid 5389] mkdir("./file0", 0777) = 0 [pid 5389] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5389] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5389] chdir("./file0") = 0 [pid 5389] ioctl(4, LOOP_CLR_FD) = 0 [pid 5389] close(4) = 0 [ 124.186036][ T5389] loop0: detected capacity change from 0 to 2048 [ 124.201872][ T5390] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 124.220399][ T5389] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5389] creat("./file2", 040) = 4 [pid 5389] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5389] exit_group(0) = ? [pid 5389] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5389, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./178", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./178", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./178/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./178/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./178/binderfs") = 0 [ 124.232448][ T5389] Remounting filesystem read-only [ 124.237897][ T5389] NILFS (loop0): error -5 truncating bmap (ino=16) [ 124.247173][ T5389] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 124.258773][ T5389] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 124.269118][ T5389] NILFS (loop0): error -5 truncating bmap (ino=16) [ 124.302167][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 124.309539][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 124.317310][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 124.326869][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 124.337413][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./178/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./178/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./178/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./178/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./178/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./178/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./178") = 0 mkdir("./179", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5391 ./strace-static-x86_64: Process 5391 attached [pid 5391] set_robust_list(0x555556375660, 24) = 0 [pid 5391] chdir("./179") = 0 [ 124.346905][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5391] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5391] setpgid(0, 0) = 0 [pid 5391] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5391] write(3, "1000", 4) = 4 [pid 5391] close(3) = 0 [pid 5391] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5391] memfd_create("syzkaller", 0) = 3 [pid 5391] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5391] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5391] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5391] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5391] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5391] close(3) = 0 [pid 5391] mkdir("./file0", 0777) = 0 [pid 5391] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5391] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5391] chdir("./file0") = 0 [pid 5391] ioctl(4, LOOP_CLR_FD) = 0 [pid 5391] close(4) = 0 [ 124.430621][ T5391] loop0: detected capacity change from 0 to 2048 [ 124.448080][ T5392] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 124.462175][ T5391] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 124.472686][ T5391] Remounting filesystem read-only [pid 5391] creat("./file2", 040) = 4 [pid 5391] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5391] exit_group(0) = ? [pid 5391] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5391, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./179", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./179", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./179/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./179/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./179/binderfs") = 0 [ 124.477872][ T5391] NILFS (loop0): error -5 truncating bmap (ino=16) [ 124.488659][ T5391] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 124.499514][ T5391] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 124.509538][ T5391] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./179/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./179/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./179/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./179/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./179/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./179/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./179") = 0 mkdir("./180", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5393 ./strace-static-x86_64: Process 5393 attached [pid 5393] set_robust_list(0x555556375660, 24) = 0 [pid 5393] chdir("./180") = 0 [pid 5393] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5393] setpgid(0, 0) = 0 [pid 5393] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5393] write(3, "1000", 4) = 4 [pid 5393] close(3) = 0 [pid 5393] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5393] memfd_create("syzkaller", 0) = 3 [pid 5393] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 124.525980][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 124.533259][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 124.540634][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 124.550526][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 124.559941][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 124.569462][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5393] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5393] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5393] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5393] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5393] close(3) = 0 [pid 5393] mkdir("./file0", 0777) = 0 [pid 5393] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5393] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5393] chdir("./file0") = 0 [pid 5393] ioctl(4, LOOP_CLR_FD) = 0 [pid 5393] close(4) = 0 [ 124.626732][ T5393] loop0: detected capacity change from 0 to 2048 [ 124.642723][ T5394] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5393] creat("./file2", 040) = 4 [ 124.674879][ T5393] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 124.686365][ T5393] Remounting filesystem read-only [ 124.693553][ T5393] NILFS (loop0): error -5 truncating bmap (ino=16) [ 124.702533][ T5393] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 124.714784][ T5393] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5393] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5393] exit_group(0) = ? [pid 5393] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5393, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./180", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./180", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./180/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./180/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./180/binderfs") = 0 [ 124.725187][ T5393] NILFS (loop0): error -5 truncating bmap (ino=16) [ 124.740738][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 124.748229][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 124.757247][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 124.766690][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./180/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./180/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./180/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./180/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./180/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./180/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./180") = 0 mkdir("./181", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5395 ./strace-static-x86_64: Process 5395 attached [pid 5395] set_robust_list(0x555556375660, 24) = 0 [pid 5395] chdir("./181") = 0 [pid 5395] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5395] setpgid(0, 0) = 0 [pid 5395] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5395] write(3, "1000", 4) = 4 [pid 5395] close(3) = 0 [pid 5395] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5395] memfd_create("syzkaller", 0) = 3 [pid 5395] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 124.776352][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 124.785923][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5395] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5395] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5395] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5395] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5395] close(3) = 0 [pid 5395] mkdir("./file0", 0777) = 0 [pid 5395] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5395] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5395] chdir("./file0") = 0 [pid 5395] ioctl(4, LOOP_CLR_FD) = 0 [pid 5395] close(4) = 0 [ 124.848189][ T5395] loop0: detected capacity change from 0 to 2048 [ 124.864605][ T5396] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 124.878964][ T5395] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 124.889415][ T5395] Remounting filesystem read-only [pid 5395] creat("./file2", 040) = 4 [pid 5395] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5395] exit_group(0) = ? [pid 5395] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5395, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- umount2("./181", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./181", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./181/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./181/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./181/binderfs") = 0 [ 124.894890][ T5395] NILFS (loop0): error -5 truncating bmap (ino=16) [ 124.902884][ T5395] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 124.913599][ T5395] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 124.923137][ T5395] NILFS (loop0): error -5 truncating bmap (ino=16) [ 124.931739][ T9] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 124.939727][ T9] NILFS (loop0): discard dirty block: blocknr=39, size=1024 umount2("./181/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./181/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./181/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./181/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./181/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./181/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./181") = 0 mkdir("./182", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5397 ./strace-static-x86_64: Process 5397 attached [pid 5397] set_robust_list(0x555556375660, 24) = 0 [pid 5397] chdir("./182") = 0 [pid 5397] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5397] setpgid(0, 0) = 0 [pid 5397] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5397] write(3, "1000", 4) = 4 [pid 5397] close(3) = 0 [pid 5397] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5397] memfd_create("syzkaller", 0) = 3 [pid 5397] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 124.947406][ T9] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 124.957464][ T9] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 124.966641][ T9] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 124.976407][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5397] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5397] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5397] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5397] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5397] close(3) = 0 [pid 5397] mkdir("./file0", 0777) = 0 [pid 5397] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5397] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5397] chdir("./file0") = 0 [pid 5397] ioctl(4, LOOP_CLR_FD) = 0 [pid 5397] close(4) = 0 [ 125.043233][ T5397] loop0: detected capacity change from 0 to 2048 [ 125.060477][ T5398] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5397] creat("./file2", 040) = 4 [pid 5397] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5397] exit_group(0) = ? [pid 5397] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5397, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./182", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./182", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./182/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./182/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./182/binderfs") = 0 [ 125.087668][ T5397] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 125.100501][ T5397] Remounting filesystem read-only [ 125.106634][ T5397] NILFS (loop0): error -5 truncating bmap (ino=16) [ 125.115163][ T5397] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 125.125571][ T5397] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 125.135208][ T5397] NILFS (loop0): error -5 truncating bmap (ino=16) [ 125.152823][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 125.159907][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 125.169210][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 125.178332][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 125.187821][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./182/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./182/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./182/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./182/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./182/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./182/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./182") = 0 mkdir("./183", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5399 ./strace-static-x86_64: Process 5399 attached [pid 5399] set_robust_list(0x555556375660, 24) = 0 [pid 5399] chdir("./183") = 0 [pid 5399] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5399] setpgid(0, 0) = 0 [pid 5399] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5399] write(3, "1000", 4) = 4 [pid 5399] close(3) = 0 [pid 5399] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5399] memfd_create("syzkaller", 0) = 3 [pid 5399] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 125.197524][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5399] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5399] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5399] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5399] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5399] close(3) = 0 [pid 5399] mkdir("./file0", 0777) = 0 [pid 5399] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5399] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5399] chdir("./file0") = 0 [pid 5399] ioctl(4, LOOP_CLR_FD) = 0 [pid 5399] close(4) = 0 [ 125.266753][ T5399] loop0: detected capacity change from 0 to 2048 [ 125.283702][ T5400] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 125.296116][ T5399] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 125.307549][ T5399] Remounting filesystem read-only [pid 5399] creat("./file2", 040) = 4 [pid 5399] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5399] exit_group(0) = ? [pid 5399] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5399, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./183", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./183", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./183/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./183/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./183/binderfs") = 0 [ 125.313586][ T5399] NILFS (loop0): error -5 truncating bmap (ino=16) [ 125.334168][ T5399] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 125.344238][ T5399] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 125.354395][ T5399] NILFS (loop0): error -5 truncating bmap (ino=16) [ 125.370560][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 125.377965][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 125.386061][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 125.395096][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 125.406426][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./183/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./183/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./183/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./183/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./183/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./183/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./183") = 0 mkdir("./184", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5401 ./strace-static-x86_64: Process 5401 attached [pid 5401] set_robust_list(0x555556375660, 24) = 0 [pid 5401] chdir("./184") = 0 [pid 5401] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5401] setpgid(0, 0) = 0 [pid 5401] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5401] write(3, "1000", 4) = 4 [pid 5401] close(3) = 0 [pid 5401] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5401] memfd_create("syzkaller", 0) = 3 [pid 5401] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 125.415765][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5401] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5401] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5401] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5401] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5401] close(3) = 0 [pid 5401] mkdir("./file0", 0777) = 0 [pid 5401] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5401] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5401] chdir("./file0") = 0 [pid 5401] ioctl(4, LOOP_CLR_FD) = 0 [pid 5401] close(4) = 0 [ 125.478410][ T5401] loop0: detected capacity change from 0 to 2048 [ 125.495015][ T5402] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 125.499714][ T5401] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 125.516854][ T5401] Remounting filesystem read-only [pid 5401] creat("./file2", 040) = 4 [pid 5401] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5401] exit_group(0) = ? [pid 5401] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5401, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./184", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./184", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./184/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./184/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./184/binderfs") = 0 [ 125.522185][ T5401] NILFS (loop0): error -5 truncating bmap (ino=16) [ 125.542066][ T5401] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 125.552516][ T5401] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 125.561940][ T5401] NILFS (loop0): error -5 truncating bmap (ino=16) [ 125.581322][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 125.588802][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 125.596234][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 125.605714][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 125.614986][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./184/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./184/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./184/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./184/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./184/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./184/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./184") = 0 mkdir("./185", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 125.624992][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5403 ./strace-static-x86_64: Process 5403 attached [pid 5403] set_robust_list(0x555556375660, 24) = 0 [pid 5403] chdir("./185") = 0 [pid 5403] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5403] setpgid(0, 0) = 0 [pid 5403] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5403] write(3, "1000", 4) = 4 [pid 5403] close(3) = 0 [pid 5403] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5403] memfd_create("syzkaller", 0) = 3 [pid 5403] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5403] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5403] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5403] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5403] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5403] close(3) = 0 [pid 5403] mkdir("./file0", 0777) = 0 [pid 5403] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5403] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5403] chdir("./file0") = 0 [pid 5403] ioctl(4, LOOP_CLR_FD) = 0 [pid 5403] close(4) = 0 [ 125.715941][ T5403] loop0: detected capacity change from 0 to 2048 [ 125.731261][ T5404] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 125.751960][ T5403] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5403] creat("./file2", 040) = 4 [pid 5403] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5403] exit_group(0) = ? [pid 5403] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5403, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./185", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./185", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./185/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./185/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./185/binderfs") = 0 [ 125.762191][ T5403] Remounting filesystem read-only [ 125.767396][ T5403] NILFS (loop0): error -5 truncating bmap (ino=16) [ 125.775354][ T5403] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 125.785674][ T5403] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 125.795117][ T5403] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./185/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./185/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./185/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./185/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./185/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./185/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./185") = 0 mkdir("./186", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5405 ./strace-static-x86_64: Process 5405 attached [pid 5405] set_robust_list(0x555556375660, 24) = 0 [pid 5405] chdir("./186") = 0 [pid 5405] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5405] setpgid(0, 0) = 0 [pid 5405] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5405] write(3, "1000", 4) = 4 [pid 5405] close(3) = 0 [pid 5405] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5405] memfd_create("syzkaller", 0) = 3 [pid 5405] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 125.810195][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 125.818083][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 125.826636][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 125.836071][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 125.845025][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 125.854174][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5405] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5405] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5405] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5405] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5405] close(3) = 0 [pid 5405] mkdir("./file0", 0777) = 0 [pid 5405] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5405] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5405] chdir("./file0") = 0 [pid 5405] ioctl(4, LOOP_CLR_FD) = 0 [pid 5405] close(4) = 0 [ 125.923197][ T5405] loop0: detected capacity change from 0 to 2048 [ 125.940912][ T5406] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 125.958890][ T5405] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5405] creat("./file2", 040) = 4 [pid 5405] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5405] exit_group(0) = ? [pid 5405] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5405, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./186", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./186", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./186/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./186/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./186/binderfs") = 0 [ 125.970424][ T5405] Remounting filesystem read-only [ 125.976742][ T5405] NILFS (loop0): error -5 truncating bmap (ino=16) [ 125.985570][ T5405] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 125.996024][ T5405] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 126.005736][ T5405] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./186/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./186/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./186/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./186/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./186/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./186/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./186") = 0 mkdir("./187", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 126.022848][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 126.029954][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 126.037597][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 126.046518][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 126.055615][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 126.064739][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5407 ./strace-static-x86_64: Process 5407 attached [pid 5407] set_robust_list(0x555556375660, 24) = 0 [pid 5407] chdir("./187") = 0 [pid 5407] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5407] setpgid(0, 0) = 0 [pid 5407] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5407] write(3, "1000", 4) = 4 [pid 5407] close(3) = 0 [pid 5407] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5407] memfd_create("syzkaller", 0) = 3 [pid 5407] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5407] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5407] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5407] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5407] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5407] close(3) = 0 [pid 5407] mkdir("./file0", 0777) = 0 [pid 5407] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5407] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5407] chdir("./file0") = 0 [pid 5407] ioctl(4, LOOP_CLR_FD) = 0 [pid 5407] close(4) = 0 [ 126.151213][ T5407] loop0: detected capacity change from 0 to 2048 [ 126.169510][ T5408] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 126.186648][ T5407] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5407] creat("./file2", 040) = 4 [pid 5407] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5407] exit_group(0) = ? [pid 5407] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5407, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./187", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./187", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./187/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./187/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./187/binderfs") = 0 [ 126.208544][ T5407] Remounting filesystem read-only [ 126.214369][ T5407] NILFS (loop0): error -5 truncating bmap (ino=16) [ 126.224058][ T5407] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 126.234471][ T5407] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 126.243745][ T5407] NILFS (loop0): error -5 truncating bmap (ino=16) [ 126.263326][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 126.270633][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 126.278072][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 126.287196][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 126.296853][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./187/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./187/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./187/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./187/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./187/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./187/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./187") = 0 mkdir("./188", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 126.306905][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5409 ./strace-static-x86_64: Process 5409 attached [pid 5409] set_robust_list(0x555556375660, 24) = 0 [pid 5409] chdir("./188") = 0 [pid 5409] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5409] setpgid(0, 0) = 0 [pid 5409] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5409] write(3, "1000", 4) = 4 [pid 5409] close(3) = 0 [pid 5409] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5409] memfd_create("syzkaller", 0) = 3 [pid 5409] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5409] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5409] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5409] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5409] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5409] close(3) = 0 [pid 5409] mkdir("./file0", 0777) = 0 [pid 5409] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5409] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5409] chdir("./file0") = 0 [pid 5409] ioctl(4, LOOP_CLR_FD) = 0 [pid 5409] close(4) = 0 [ 126.392870][ T5409] loop0: detected capacity change from 0 to 2048 [ 126.411018][ T5410] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 126.421004][ T5409] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 126.432919][ T5409] Remounting filesystem read-only [pid 5409] creat("./file2", 040) = 4 [pid 5409] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5409] exit_group(0) = ? [pid 5409] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5409, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./188", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./188", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./188/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./188/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./188/binderfs") = 0 [ 126.438192][ T5409] NILFS (loop0): error -5 truncating bmap (ino=16) [ 126.446811][ T5409] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 126.457611][ T5409] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 126.467155][ T5409] NILFS (loop0): error -5 truncating bmap (ino=16) [ 126.483641][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./188/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./188/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./188/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./188/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./188/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./188/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./188") = 0 mkdir("./189", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5411 ./strace-static-x86_64: Process 5411 attached [pid 5411] set_robust_list(0x555556375660, 24) = 0 [pid 5411] chdir("./189") = 0 [pid 5411] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5411] setpgid(0, 0) = 0 [pid 5411] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5411] write(3, "1000", 4) = 4 [pid 5411] close(3) = 0 [pid 5411] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5411] memfd_create("syzkaller", 0) = 3 [pid 5411] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 126.490635][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 126.498483][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 126.507749][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 126.517812][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 126.528025][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5411] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5411] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5411] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5411] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5411] close(3) = 0 [pid 5411] mkdir("./file0", 0777) = 0 [pid 5411] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5411] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5411] chdir("./file0") = 0 [pid 5411] ioctl(4, LOOP_CLR_FD) = 0 [pid 5411] close(4) = 0 [ 126.590562][ T5411] loop0: detected capacity change from 0 to 2048 [ 126.606888][ T5412] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 126.618592][ T5411] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 126.629614][ T5411] Remounting filesystem read-only [pid 5411] creat("./file2", 040) = 4 [pid 5411] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5411] exit_group(0) = ? [pid 5411] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5411, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./189", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./189", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./189/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./189/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./189/binderfs") = 0 [ 126.635522][ T5411] NILFS (loop0): error -5 truncating bmap (ino=16) [ 126.644405][ T5411] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 126.654738][ T5411] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 126.664463][ T5411] NILFS (loop0): error -5 truncating bmap (ino=16) [ 126.679291][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./189/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./189/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./189/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./189/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./189/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./189/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./189") = 0 mkdir("./190", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5413 ./strace-static-x86_64: Process 5413 attached [pid 5413] set_robust_list(0x555556375660, 24) = 0 [pid 5413] chdir("./190") = 0 [pid 5413] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5413] setpgid(0, 0) = 0 [pid 5413] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5413] write(3, "1000", 4) = 4 [pid 5413] close(3) = 0 [pid 5413] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5413] memfd_create("syzkaller", 0) = 3 [pid 5413] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 126.687477][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 126.696517][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 126.706057][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 126.715821][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 126.726181][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5413] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5413] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5413] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5413] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5413] close(3) = 0 [pid 5413] mkdir("./file0", 0777) = 0 [pid 5413] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5413] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5413] chdir("./file0") = 0 [pid 5413] ioctl(4, LOOP_CLR_FD) = 0 [pid 5413] close(4) = 0 [ 126.786419][ T5413] loop0: detected capacity change from 0 to 2048 [ 126.804021][ T5414] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 126.816812][ T5413] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 126.827892][ T5413] Remounting filesystem read-only [pid 5413] creat("./file2", 040) = 4 [pid 5413] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5413] exit_group(0) = ? [pid 5413] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5413, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./190", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./190", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./190/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./190/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./190/binderfs") = 0 [ 126.833816][ T5413] NILFS (loop0): error -5 truncating bmap (ino=16) [ 126.845144][ T5413] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 126.855400][ T5413] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 126.864745][ T5413] NILFS (loop0): error -5 truncating bmap (ino=16) [ 126.883917][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 126.891104][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 126.898760][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 126.908109][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 126.918132][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./190/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./190/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./190/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./190/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./190/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./190/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./190") = 0 mkdir("./191", 0777) = 0 [ 126.928083][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5415 ./strace-static-x86_64: Process 5415 attached [pid 5415] set_robust_list(0x555556375660, 24) = 0 [pid 5415] chdir("./191") = 0 [pid 5415] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5415] setpgid(0, 0) = 0 [pid 5415] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5415] write(3, "1000", 4) = 4 [pid 5415] close(3) = 0 [pid 5415] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5415] memfd_create("syzkaller", 0) = 3 [pid 5415] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5415] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5415] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5415] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5415] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5415] close(3) = 0 [pid 5415] mkdir("./file0", 0777) = 0 [pid 5415] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5415] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5415] chdir("./file0") = 0 [pid 5415] ioctl(4, LOOP_CLR_FD) = 0 [pid 5415] close(4) = 0 [pid 5415] creat("./file2", 040) = 4 [ 127.022830][ T5415] loop0: detected capacity change from 0 to 2048 [ 127.039265][ T5416] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 127.048989][ T5415] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 127.060760][ T5415] Remounting filesystem read-only [ 127.066556][ T5415] NILFS (loop0): error -5 truncating bmap (ino=16) [pid 5415] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5415] exit_group(0) = ? [pid 5415] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5415, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./191", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./191", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./191/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./191/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./191/binderfs") = 0 [ 127.075327][ T5415] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 127.085946][ T5415] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 127.095657][ T5415] NILFS (loop0): error -5 truncating bmap (ino=16) [ 127.113154][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./191/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./191/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./191/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./191/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./191/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./191/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./191") = 0 mkdir("./192", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5417 ./strace-static-x86_64: Process 5417 attached [pid 5417] set_robust_list(0x555556375660, 24) = 0 [pid 5417] chdir("./192") = 0 [ 127.120609][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 127.128170][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 127.137335][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 127.147437][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 127.158384][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5417] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5417] setpgid(0, 0) = 0 [pid 5417] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5417] write(3, "1000", 4) = 4 [pid 5417] close(3) = 0 [pid 5417] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5417] memfd_create("syzkaller", 0) = 3 [pid 5417] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5417] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5417] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5417] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5417] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5417] close(3) = 0 [pid 5417] mkdir("./file0", 0777) = 0 [pid 5417] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5417] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5417] chdir("./file0") = 0 [pid 5417] ioctl(4, LOOP_CLR_FD) = 0 [pid 5417] close(4) = 0 [ 127.238103][ T5417] loop0: detected capacity change from 0 to 2048 [ 127.254808][ T5418] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5417] creat("./file2", 040) = 4 [pid 5417] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5417] exit_group(0) = ? [pid 5417] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5417, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./192", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./192", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./192/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./192/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./192/binderfs") = 0 [ 127.280798][ T5417] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 127.291613][ T5417] Remounting filesystem read-only [ 127.296695][ T5417] NILFS (loop0): error -5 truncating bmap (ino=16) [ 127.305748][ T5417] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 127.315781][ T5417] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 127.325350][ T5417] NILFS (loop0): error -5 truncating bmap (ino=16) [ 127.346807][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 127.354330][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 127.362129][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 127.371823][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 127.380745][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./192/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./192/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./192/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./192/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./192/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./192/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./192") = 0 mkdir("./193", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5419 ./strace-static-x86_64: Process 5419 attached [pid 5419] set_robust_list(0x555556375660, 24) = 0 [pid 5419] chdir("./193") = 0 [pid 5419] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5419] setpgid(0, 0) = 0 [pid 5419] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5419] write(3, "1000", 4) = 4 [pid 5419] close(3) = 0 [pid 5419] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5419] memfd_create("syzkaller", 0) = 3 [pid 5419] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 127.390845][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5419] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5419] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5419] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5419] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5419] close(3) = 0 [pid 5419] mkdir("./file0", 0777) = 0 [pid 5419] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5419] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5419] chdir("./file0") = 0 [pid 5419] ioctl(4, LOOP_CLR_FD) = 0 [pid 5419] close(4) = 0 [ 127.454544][ T5419] loop0: detected capacity change from 0 to 2048 [ 127.471125][ T5420] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 127.485702][ T5419] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 127.496178][ T5419] Remounting filesystem read-only [pid 5419] creat("./file2", 040) = 4 [pid 5419] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5419] exit_group(0) = ? [pid 5419] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5419, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./193", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./193", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./193/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./193/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./193/binderfs") = 0 [ 127.502489][ T5419] NILFS (loop0): error -5 truncating bmap (ino=16) [ 127.511780][ T5419] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 127.522759][ T5419] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 127.532154][ T5419] NILFS (loop0): error -5 truncating bmap (ino=16) [ 127.546879][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./193/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./193/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./193/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./193/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./193/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./193/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./193") = 0 mkdir("./194", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5421 ./strace-static-x86_64: Process 5421 attached [pid 5421] set_robust_list(0x555556375660, 24) = 0 [pid 5421] chdir("./194") = 0 [pid 5421] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5421] setpgid(0, 0) = 0 [pid 5421] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5421] write(3, "1000", 4) = 4 [pid 5421] close(3) = 0 [pid 5421] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5421] memfd_create("syzkaller", 0) = 3 [pid 5421] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 127.554020][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 127.561349][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 127.570646][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 127.579813][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 127.589493][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5421] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5421] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5421] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5421] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5421] close(3) = 0 [pid 5421] mkdir("./file0", 0777) = 0 [pid 5421] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5421] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5421] chdir("./file0") = 0 [pid 5421] ioctl(4, LOOP_CLR_FD) = 0 [pid 5421] close(4) = 0 [ 127.656219][ T5421] loop0: detected capacity change from 0 to 2048 [ 127.672912][ T5422] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 127.694606][ T5421] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5421] creat("./file2", 040) = 4 [pid 5421] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5421] exit_group(0) = ? [pid 5421] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5421, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./194", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./194", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./194/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./194/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./194/binderfs") = 0 [ 127.707712][ T5421] Remounting filesystem read-only [ 127.713720][ T5421] NILFS (loop0): error -5 truncating bmap (ino=16) [ 127.723714][ T5421] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 127.734164][ T5421] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 127.743384][ T5421] NILFS (loop0): error -5 truncating bmap (ino=16) [ 127.761312][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 127.768486][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 127.776246][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 127.785466][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 127.794787][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./194/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./194/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./194/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./194/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./194/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./194/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./194") = 0 mkdir("./195", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5423 ./strace-static-x86_64: Process 5423 attached [pid 5423] set_robust_list(0x555556375660, 24) = 0 [pid 5423] chdir("./195") = 0 [pid 5423] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5423] setpgid(0, 0) = 0 [ 127.803999][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5423] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5423] write(3, "1000", 4) = 4 [pid 5423] close(3) = 0 [pid 5423] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5423] memfd_create("syzkaller", 0) = 3 [pid 5423] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5423] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5423] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5423] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5423] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5423] close(3) = 0 [pid 5423] mkdir("./file0", 0777) = 0 [pid 5423] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5423] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5423] chdir("./file0") = 0 [pid 5423] ioctl(4, LOOP_CLR_FD) = 0 [pid 5423] close(4) = 0 [ 127.885240][ T5423] loop0: detected capacity change from 0 to 2048 [ 127.901251][ T5424] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5423] creat("./file2", 040) = 4 [pid 5423] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5423] exit_group(0) = ? [pid 5423] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5423, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./195", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./195", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./195/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./195/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./195/binderfs") = 0 [ 127.932402][ T5423] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 127.943359][ T5423] Remounting filesystem read-only [ 127.948549][ T5423] NILFS (loop0): error -5 truncating bmap (ino=16) [ 127.957046][ T5423] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 127.966980][ T5423] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 127.976252][ T5423] NILFS (loop0): error -5 truncating bmap (ino=16) [ 127.992449][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 128.000438][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 128.008162][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 128.017411][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 128.027260][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./195/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./195/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./195/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./195/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./195/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./195/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./195") = 0 mkdir("./196", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5425 ./strace-static-x86_64: Process 5425 attached [pid 5425] set_robust_list(0x555556375660, 24) = 0 [pid 5425] chdir("./196") = 0 [pid 5425] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5425] setpgid(0, 0) = 0 [pid 5425] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5425] write(3, "1000", 4) = 4 [pid 5425] close(3) = 0 [pid 5425] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5425] memfd_create("syzkaller", 0) = 3 [pid 5425] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 128.036991][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5425] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5425] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5425] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5425] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5425] close(3) = 0 [pid 5425] mkdir("./file0", 0777) = 0 [pid 5425] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5425] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5425] chdir("./file0") = 0 [pid 5425] ioctl(4, LOOP_CLR_FD) = 0 [pid 5425] close(4) = 0 [ 128.095201][ T5425] loop0: detected capacity change from 0 to 2048 [ 128.112917][ T5426] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 128.134956][ T5425] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5425] creat("./file2", 040) = 4 [pid 5425] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5425] exit_group(0) = ? [pid 5425] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5425, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./196", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./196", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./196/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./196/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./196/binderfs") = 0 [ 128.145349][ T5425] Remounting filesystem read-only [ 128.150760][ T5425] NILFS (loop0): error -5 truncating bmap (ino=16) [ 128.158391][ T5425] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 128.168400][ T5425] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 128.178582][ T5425] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./196/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./196/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./196/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./196/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./196/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./196/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./196") = 0 mkdir("./197", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5427 ./strace-static-x86_64: Process 5427 attached [pid 5427] set_robust_list(0x555556375660, 24) = 0 [pid 5427] chdir("./197") = 0 [pid 5427] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5427] setpgid(0, 0) = 0 [pid 5427] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5427] write(3, "1000", 4) = 4 [pid 5427] close(3) = 0 [pid 5427] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5427] memfd_create("syzkaller", 0) = 3 [pid 5427] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 128.193973][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 128.201037][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 128.208542][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 128.217737][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 128.226788][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 128.236010][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5427] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5427] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5427] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5427] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5427] close(3) = 0 [pid 5427] mkdir("./file0", 0777) = 0 [pid 5427] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5427] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5427] chdir("./file0") = 0 [pid 5427] ioctl(4, LOOP_CLR_FD) = 0 [pid 5427] close(4) = 0 [ 128.298364][ T5427] loop0: detected capacity change from 0 to 2048 [ 128.313762][ T5428] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 128.333528][ T5427] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5427] creat("./file2", 040) = 4 [pid 5427] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5427] exit_group(0) = ? [pid 5427] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5427, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./197", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./197", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./197/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./197/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./197/binderfs") = 0 [ 128.345147][ T5427] Remounting filesystem read-only [ 128.352776][ T5427] NILFS (loop0): error -5 truncating bmap (ino=16) [ 128.360747][ T5427] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 128.372103][ T5427] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 128.381871][ T5427] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./197/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./197/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./197/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./197/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./197/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./197/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./197") = 0 mkdir("./198", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5429 ./strace-static-x86_64: Process 5429 attached [pid 5429] set_robust_list(0x555556375660, 24) = 0 [pid 5429] chdir("./198") = 0 [pid 5429] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5429] setpgid(0, 0) = 0 [pid 5429] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5429] write(3, "1000", 4) = 4 [pid 5429] close(3) = 0 [ 128.396336][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 128.404194][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 128.411629][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 128.420794][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 128.429934][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 128.439139][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5429] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5429] memfd_create("syzkaller", 0) = 3 [pid 5429] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5429] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5429] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5429] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5429] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5429] close(3) = 0 [pid 5429] mkdir("./file0", 0777) = 0 [pid 5429] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5429] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5429] chdir("./file0") = 0 [pid 5429] ioctl(4, LOOP_CLR_FD) = 0 [pid 5429] close(4) = 0 [pid 5429] creat("./file2", 040) = 4 [ 128.507640][ T5429] loop0: detected capacity change from 0 to 2048 [ 128.524303][ T5430] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 128.535123][ T5429] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 128.545598][ T5429] Remounting filesystem read-only [ 128.550856][ T5429] NILFS (loop0): error -5 truncating bmap (ino=16) [pid 5429] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5429] exit_group(0) = ? [pid 5429] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5429, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./198", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./198", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./198/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./198/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./198/binderfs") = 0 [ 128.558569][ T5429] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 128.568963][ T5429] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 128.578440][ T5429] NILFS (loop0): error -5 truncating bmap (ino=16) [ 128.593390][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./198/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./198/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./198/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./198/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./198/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./198/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./198") = 0 mkdir("./199", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5431 ./strace-static-x86_64: Process 5431 attached [pid 5431] set_robust_list(0x555556375660, 24) = 0 [pid 5431] chdir("./199") = 0 [pid 5431] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5431] setpgid(0, 0) = 0 [pid 5431] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5431] write(3, "1000", 4) = 4 [pid 5431] close(3) = 0 [pid 5431] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5431] memfd_create("syzkaller", 0) = 3 [pid 5431] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 128.601934][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 128.610509][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 128.620162][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 128.629214][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 128.638550][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5431] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5431] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5431] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5431] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5431] close(3) = 0 [pid 5431] mkdir("./file0", 0777) = 0 [pid 5431] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5431] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5431] chdir("./file0") = 0 [pid 5431] ioctl(4, LOOP_CLR_FD) = 0 [pid 5431] close(4) = 0 [pid 5431] creat("./file2", 040) = 4 [ 128.703316][ T5431] loop0: detected capacity change from 0 to 2048 [ 128.720399][ T5432] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 128.731329][ T5431] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 128.741869][ T5431] Remounting filesystem read-only [ 128.746962][ T5431] NILFS (loop0): error -5 truncating bmap (ino=16) [pid 5431] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5431] exit_group(0) = ? [pid 5431] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5431, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./199", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./199", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./199/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./199/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./199/binderfs") = 0 [ 128.756125][ T5431] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 128.766553][ T5431] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 128.775960][ T5431] NILFS (loop0): error -5 truncating bmap (ino=16) [ 128.793264][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./199/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./199/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./199/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./199/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./199/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./199/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./199") = 0 mkdir("./200", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5433 ./strace-static-x86_64: Process 5433 attached [pid 5433] set_robust_list(0x555556375660, 24) = 0 [pid 5433] chdir("./200") = 0 [pid 5433] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5433] setpgid(0, 0) = 0 [ 128.800998][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 128.808685][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 128.817985][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 128.827333][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 128.836590][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5433] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5433] write(3, "1000", 4) = 4 [pid 5433] close(3) = 0 [pid 5433] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5433] memfd_create("syzkaller", 0) = 3 [pid 5433] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5433] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5433] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5433] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5433] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5433] close(3) = 0 [pid 5433] mkdir("./file0", 0777) = 0 [pid 5433] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5433] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5433] chdir("./file0") = 0 [pid 5433] ioctl(4, LOOP_CLR_FD) = 0 [pid 5433] close(4) = 0 [ 128.920675][ T5433] loop0: detected capacity change from 0 to 2048 [ 128.937277][ T5434] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 128.946596][ T5433] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 128.959064][ T5433] Remounting filesystem read-only [pid 5433] creat("./file2", 040) = 4 [pid 5433] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5433] exit_group(0) = ? [pid 5433] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5433, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./200", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./200", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./200/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./200/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./200/binderfs") = 0 [ 128.967393][ T5433] NILFS (loop0): error -5 truncating bmap (ino=16) [ 128.976796][ T5433] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 128.987687][ T5433] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 128.997428][ T5433] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./200/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./200/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./200/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./200/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./200/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./200/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./200") = 0 mkdir("./201", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5435 ./strace-static-x86_64: Process 5435 attached [pid 5435] set_robust_list(0x555556375660, 24) = 0 [pid 5435] chdir("./201") = 0 [pid 5435] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5435] setpgid(0, 0) = 0 [pid 5435] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5435] write(3, "1000", 4) = 4 [pid 5435] close(3) = 0 [pid 5435] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5435] memfd_create("syzkaller", 0) = 3 [pid 5435] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 129.016953][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 129.024122][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 129.031531][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 129.040515][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 129.049753][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 129.059011][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5435] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5435] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5435] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5435] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5435] close(3) = 0 [pid 5435] mkdir("./file0", 0777) = 0 [pid 5435] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5435] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5435] chdir("./file0") = 0 [pid 5435] ioctl(4, LOOP_CLR_FD) = 0 [pid 5435] close(4) = 0 [ 129.132527][ T5435] loop0: detected capacity change from 0 to 2048 [ 129.150463][ T5436] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 129.166061][ T5435] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5435] creat("./file2", 040) = 4 [pid 5435] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5435] exit_group(0) = ? [pid 5435] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5435, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./201", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./201", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./201/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./201/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./201/binderfs") = 0 [ 129.184599][ T5435] Remounting filesystem read-only [ 129.189932][ T5435] NILFS (loop0): error -5 truncating bmap (ino=16) [ 129.198013][ T5435] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 129.208891][ T5435] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 129.219823][ T5435] NILFS (loop0): error -5 truncating bmap (ino=16) [ 129.235507][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 129.242608][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 129.250314][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 129.260809][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 129.270200][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./201/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./201/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./201/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./201/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./201/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 [ 129.281956][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer rmdir("./201/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./201") = 0 mkdir("./202", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5437 ./strace-static-x86_64: Process 5437 attached [pid 5437] set_robust_list(0x555556375660, 24) = 0 [pid 5437] chdir("./202") = 0 [pid 5437] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5437] setpgid(0, 0) = 0 [pid 5437] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5437] write(3, "1000", 4) = 4 [pid 5437] close(3) = 0 [pid 5437] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5437] memfd_create("syzkaller", 0) = 3 [pid 5437] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5437] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5437] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5437] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5437] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5437] close(3) = 0 [pid 5437] mkdir("./file0", 0777) = 0 [pid 5437] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5437] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5437] chdir("./file0") = 0 [pid 5437] ioctl(4, LOOP_CLR_FD) = 0 [pid 5437] close(4) = 0 [ 129.379313][ T5437] loop0: detected capacity change from 0 to 2048 [ 129.397059][ T5438] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5437] creat("./file2", 040) = 4 [pid 5437] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5437] exit_group(0) = ? [pid 5437] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5437, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- umount2("./202", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./202", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./202/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./202/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./202/binderfs") = 0 [ 129.423301][ T5437] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 129.436212][ T5437] Remounting filesystem read-only [ 129.442020][ T5437] NILFS (loop0): error -5 truncating bmap (ino=16) [ 129.449770][ T5437] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 129.460117][ T5437] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 129.469650][ T5437] NILFS (loop0): error -5 truncating bmap (ino=16) [ 129.486248][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 129.493458][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 129.500913][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 129.510380][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 129.520012][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./202/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./202/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./202/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./202/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./202/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./202/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./202") = 0 mkdir("./203", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5439 ./strace-static-x86_64: Process 5439 attached [pid 5439] set_robust_list(0x555556375660, 24) = 0 [pid 5439] chdir("./203") = 0 [pid 5439] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5439] setpgid(0, 0) = 0 [pid 5439] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5439] write(3, "1000", 4) = 4 [pid 5439] close(3) = 0 [pid 5439] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5439] memfd_create("syzkaller", 0) = 3 [ 129.529437][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5439] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5439] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5439] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5439] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5439] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5439] close(3) = 0 [pid 5439] mkdir("./file0", 0777) = 0 [pid 5439] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5439] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5439] chdir("./file0") = 0 [pid 5439] ioctl(4, LOOP_CLR_FD) = 0 [pid 5439] close(4) = 0 [ 129.595366][ T5439] loop0: detected capacity change from 0 to 2048 [ 129.614625][ T5440] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 129.622231][ T5439] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 129.635577][ T5439] Remounting filesystem read-only [pid 5439] creat("./file2", 040) = 4 [pid 5439] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5439] exit_group(0) = ? [pid 5439] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5439, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./203", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./203", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./203/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./203/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./203/binderfs") = 0 [ 129.640844][ T5439] NILFS (loop0): error -5 truncating bmap (ino=16) [ 129.659177][ T5439] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 129.671779][ T5439] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 129.681383][ T5439] NILFS (loop0): error -5 truncating bmap (ino=16) [ 129.696437][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 129.704103][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 129.711569][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 129.721975][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 129.731552][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./203/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./203/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./203/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./203/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./203/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./203/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./203") = 0 mkdir("./204", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5441 ./strace-static-x86_64: Process 5441 attached [pid 5441] set_robust_list(0x555556375660, 24) = 0 [pid 5441] chdir("./204") = 0 [pid 5441] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5441] setpgid(0, 0) = 0 [pid 5441] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5441] write(3, "1000", 4) = 4 [pid 5441] close(3) = 0 [pid 5441] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5441] memfd_create("syzkaller", 0) = 3 [pid 5441] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 129.741284][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5441] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5441] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5441] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5441] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5441] close(3) = 0 [pid 5441] mkdir("./file0", 0777) = 0 [pid 5441] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5441] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5441] chdir("./file0") = 0 [pid 5441] ioctl(4, LOOP_CLR_FD) = 0 [pid 5441] close(4) = 0 [ 129.806432][ T5441] loop0: detected capacity change from 0 to 2048 [ 129.825897][ T5442] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 129.835069][ T5441] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 129.847607][ T5441] Remounting filesystem read-only [pid 5441] creat("./file2", 040) = 4 [pid 5441] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5441] exit_group(0) = ? [pid 5441] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5441, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./204", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./204", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./204/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./204/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./204/binderfs") = 0 [ 129.853805][ T5441] NILFS (loop0): error -5 truncating bmap (ino=16) [ 129.862836][ T5441] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 129.873054][ T5441] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 129.884025][ T5441] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./204/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./204/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./204/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./204/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./204/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./204/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./204") = 0 mkdir("./205", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5443 ./strace-static-x86_64: Process 5443 attached [pid 5443] set_robust_list(0x555556375660, 24) = 0 [ 129.902945][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 129.910458][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 129.918825][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 129.928121][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 129.937986][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 129.947233][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5443] chdir("./205") = 0 [pid 5443] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5443] setpgid(0, 0) = 0 [pid 5443] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5443] write(3, "1000", 4) = 4 [pid 5443] close(3) = 0 [pid 5443] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5443] memfd_create("syzkaller", 0) = 3 [pid 5443] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5443] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5443] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5443] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5443] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5443] close(3) = 0 [pid 5443] mkdir("./file0", 0777) = 0 [pid 5443] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5443] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5443] chdir("./file0") = 0 [pid 5443] ioctl(4, LOOP_CLR_FD) = 0 [pid 5443] close(4) = 0 [ 130.013545][ T5443] loop0: detected capacity change from 0 to 2048 [ 130.029877][ T5444] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 130.052821][ T5443] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5443] creat("./file2", 040) = 4 [pid 5443] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5443] exit_group(0) = ? [pid 5443] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5443, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./205", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./205", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./205/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./205/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./205/binderfs") = 0 [ 130.062976][ T5443] Remounting filesystem read-only [ 130.068427][ T5443] NILFS (loop0): error -5 truncating bmap (ino=16) [ 130.077429][ T5443] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 130.087559][ T5443] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 130.097184][ T5443] NILFS (loop0): error -5 truncating bmap (ino=16) [ 130.115631][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 130.123896][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 130.131397][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 130.140467][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 130.149847][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./205/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./205/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./205/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./205/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./205/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./205/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./205") = 0 mkdir("./206", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5445 ./strace-static-x86_64: Process 5445 attached [pid 5445] set_robust_list(0x555556375660, 24) = 0 [pid 5445] chdir("./206") = 0 [pid 5445] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5445] setpgid(0, 0) = 0 [pid 5445] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5445] write(3, "1000", 4) = 4 [pid 5445] close(3) = 0 [pid 5445] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5445] memfd_create("syzkaller", 0) = 3 [pid 5445] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 130.160409][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5445] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5445] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5445] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5445] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5445] close(3) = 0 [pid 5445] mkdir("./file0", 0777) = 0 [pid 5445] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5445] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5445] chdir("./file0") = 0 [pid 5445] ioctl(4, LOOP_CLR_FD) = 0 [pid 5445] close(4) = 0 [ 130.220630][ T5445] loop0: detected capacity change from 0 to 2048 [ 130.237356][ T5446] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 130.261637][ T5445] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5445] creat("./file2", 040) = 4 [pid 5445] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5445] exit_group(0) = ? [pid 5445] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5445, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./206", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./206", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./206/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./206/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./206/binderfs") = 0 [ 130.272839][ T5445] Remounting filesystem read-only [ 130.278545][ T5445] NILFS (loop0): error -5 truncating bmap (ino=16) [ 130.288496][ T5445] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 130.299432][ T5445] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 130.309880][ T5445] NILFS (loop0): error -5 truncating bmap (ino=16) [ 130.324983][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 130.332177][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 130.339584][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 130.351852][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 130.360761][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./206/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./206/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./206/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./206/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./206/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./206/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./206") = 0 mkdir("./207", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5447 ./strace-static-x86_64: Process 5447 attached [pid 5447] set_robust_list(0x555556375660, 24) = 0 [pid 5447] chdir("./207") = 0 [pid 5447] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5447] setpgid(0, 0) = 0 [pid 5447] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5447] write(3, "1000", 4) = 4 [pid 5447] close(3) = 0 [pid 5447] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5447] memfd_create("syzkaller", 0) = 3 [pid 5447] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 130.370282][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5447] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5447] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5447] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5447] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5447] close(3) = 0 [pid 5447] mkdir("./file0", 0777) = 0 [pid 5447] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5447] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5447] chdir("./file0") = 0 [pid 5447] ioctl(4, LOOP_CLR_FD) = 0 [pid 5447] close(4) = 0 [ 130.438888][ T5447] loop0: detected capacity change from 0 to 2048 [ 130.454689][ T5448] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 130.469357][ T5447] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 130.479964][ T5447] Remounting filesystem read-only [pid 5447] creat("./file2", 040) = 4 [pid 5447] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5447] exit_group(0) = ? [pid 5447] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5447, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- umount2("./207", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./207", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./207/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./207/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./207/binderfs") = 0 [ 130.486671][ T5447] NILFS (loop0): error -5 truncating bmap (ino=16) [ 130.496216][ T5447] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 130.506741][ T5447] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 130.516431][ T5447] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./207/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./207/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./207/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./207/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./207/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./207/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./207") = 0 mkdir("./208", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 130.535752][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 130.542870][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 130.550713][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 130.560229][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 130.569549][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 130.579104][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5449 attached , child_tidptr=0x555556375650) = 5449 [pid 5449] set_robust_list(0x555556375660, 24) = 0 [pid 5449] chdir("./208") = 0 [pid 5449] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5449] setpgid(0, 0) = 0 [pid 5449] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5449] write(3, "1000", 4) = 4 [pid 5449] close(3) = 0 [pid 5449] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5449] memfd_create("syzkaller", 0) = 3 [pid 5449] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5449] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5449] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5449] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5449] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5449] close(3) = 0 [pid 5449] mkdir("./file0", 0777) = 0 [pid 5449] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5449] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5449] chdir("./file0") = 0 [pid 5449] ioctl(4, LOOP_CLR_FD) = 0 [pid 5449] close(4) = 0 [ 130.652462][ T5449] loop0: detected capacity change from 0 to 2048 [ 130.670900][ T5450] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5449] creat("./file2", 040) = 4 [pid 5449] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5449] exit_group(0) = ? [pid 5449] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5449, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./208", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./208", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./208/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./208/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./208/binderfs") = 0 [ 130.693618][ T5449] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 130.705729][ T5449] Remounting filesystem read-only [ 130.711263][ T5449] NILFS (loop0): error -5 truncating bmap (ino=16) [ 130.719831][ T5449] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 130.730087][ T5449] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 130.739600][ T5449] NILFS (loop0): error -5 truncating bmap (ino=16) [ 130.757128][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 130.764577][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 130.772233][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 130.781151][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 130.790691][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./208/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./208/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./208/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./208/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./208/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./208/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./208") = 0 mkdir("./209", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5451 ./strace-static-x86_64: Process 5451 attached [pid 5451] set_robust_list(0x555556375660, 24) = 0 [pid 5451] chdir("./209") = 0 [pid 5451] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5451] setpgid(0, 0) = 0 [pid 5451] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5451] write(3, "1000", 4) = 4 [pid 5451] close(3) = 0 [pid 5451] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5451] memfd_create("syzkaller", 0) = 3 [pid 5451] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 130.800162][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5451] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5451] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5451] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5451] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5451] close(3) = 0 [pid 5451] mkdir("./file0", 0777) = 0 [pid 5451] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5451] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5451] chdir("./file0") = 0 [pid 5451] ioctl(4, LOOP_CLR_FD) = 0 [pid 5451] close(4) = 0 [ 130.867951][ T5451] loop0: detected capacity change from 0 to 2048 [ 130.885043][ T5452] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5451] creat("./file2", 040) = 4 [pid 5451] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5451] exit_group(0) = ? [pid 5451] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5451, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./209", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./209", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./209/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./209/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./209/binderfs") = 0 [ 130.912323][ T5451] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 130.923177][ T5451] Remounting filesystem read-only [ 130.928260][ T5451] NILFS (loop0): error -5 truncating bmap (ino=16) [ 130.936479][ T5451] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 130.947069][ T5451] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 130.956472][ T5451] NILFS (loop0): error -5 truncating bmap (ino=16) [ 130.973742][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 130.980872][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 130.989263][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 130.999397][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 131.009257][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./209/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./209/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./209/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./209/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./209/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./209/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./209") = 0 mkdir("./210", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5453 ./strace-static-x86_64: Process 5453 attached [pid 5453] set_robust_list(0x555556375660, 24) = 0 [pid 5453] chdir("./210") = 0 [pid 5453] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [ 131.018909][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5453] setpgid(0, 0) = 0 [pid 5453] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5453] write(3, "1000", 4) = 4 [pid 5453] close(3) = 0 [pid 5453] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5453] memfd_create("syzkaller", 0) = 3 [pid 5453] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5453] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5453] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5453] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5453] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5453] close(3) = 0 [pid 5453] mkdir("./file0", 0777) = 0 [pid 5453] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5453] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5453] chdir("./file0") = 0 [pid 5453] ioctl(4, LOOP_CLR_FD) = 0 [pid 5453] close(4) = 0 [ 131.097970][ T5453] loop0: detected capacity change from 0 to 2048 [ 131.113883][ T5454] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 131.130564][ T5453] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 131.141510][ T5453] Remounting filesystem read-only [pid 5453] creat("./file2", 040) = 4 [pid 5453] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5453] exit_group(0) = ? [pid 5453] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5453, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./210", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./210", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./210/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./210/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./210/binderfs") = 0 [ 131.147222][ T5453] NILFS (loop0): error -5 truncating bmap (ino=16) [ 131.156457][ T5453] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 131.166916][ T5453] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 131.176619][ T5453] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./210/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./210/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./210/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./210/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./210/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./210/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./210") = 0 mkdir("./211", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5455 ./strace-static-x86_64: Process 5455 attached [pid 5455] set_robust_list(0x555556375660, 24) = 0 [pid 5455] chdir("./211") = 0 [pid 5455] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5455] setpgid(0, 0) = 0 [pid 5455] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5455] write(3, "1000", 4) = 4 [pid 5455] close(3) = 0 [pid 5455] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5455] memfd_create("syzkaller", 0) = 3 [pid 5455] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 131.192237][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 131.199239][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 131.206904][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 131.215920][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 131.224907][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 131.234260][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5455] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5455] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5455] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5455] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5455] close(3) = 0 [pid 5455] mkdir("./file0", 0777) = 0 [pid 5455] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5455] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5455] chdir("./file0") = 0 [pid 5455] ioctl(4, LOOP_CLR_FD) = 0 [pid 5455] close(4) = 0 [ 131.296842][ T5455] loop0: detected capacity change from 0 to 2048 [ 131.314139][ T5456] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 131.327227][ T5455] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 131.337691][ T5455] Remounting filesystem read-only [pid 5455] creat("./file2", 040) = 4 [pid 5455] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5455] exit_group(0) = ? [pid 5455] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5455, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./211", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./211", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./211/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./211/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./211/binderfs") = 0 [ 131.343510][ T5455] NILFS (loop0): error -5 truncating bmap (ino=16) [ 131.351309][ T5455] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 131.364610][ T5455] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 131.374221][ T5455] NILFS (loop0): error -5 truncating bmap (ino=16) [ 131.389258][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./211/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./211/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./211/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./211/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./211/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./211/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./211") = 0 mkdir("./212", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5457 ./strace-static-x86_64: Process 5457 attached [pid 5457] set_robust_list(0x555556375660, 24) = 0 [pid 5457] chdir("./212") = 0 [pid 5457] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [ 131.396435][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 131.403936][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 131.412954][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 131.421899][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 131.430995][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5457] setpgid(0, 0) = 0 [pid 5457] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5457] write(3, "1000", 4) = 4 [pid 5457] close(3) = 0 [pid 5457] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5457] memfd_create("syzkaller", 0) = 3 [pid 5457] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5457] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5457] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5457] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5457] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5457] close(3) = 0 [pid 5457] mkdir("./file0", 0777) = 0 [pid 5457] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5457] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5457] chdir("./file0") = 0 [pid 5457] ioctl(4, LOOP_CLR_FD) = 0 [pid 5457] close(4) = 0 [ 131.503901][ T5457] loop0: detected capacity change from 0 to 2048 [ 131.519293][ T5458] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5457] creat("./file2", 040) = 4 [pid 5457] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5457] exit_group(0) = ? [pid 5457] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5457, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./212", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./212", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./212/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./212/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./212/binderfs") = 0 [ 131.546835][ T5457] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 131.557969][ T5457] Remounting filesystem read-only [ 131.563299][ T5457] NILFS (loop0): error -5 truncating bmap (ino=16) [ 131.572656][ T5457] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 131.583023][ T5457] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 131.592650][ T5457] NILFS (loop0): error -5 truncating bmap (ino=16) [ 131.611766][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 131.619019][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 131.627152][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 131.636328][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 131.646536][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./212/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./212/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./212/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./212/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./212/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./212/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./212") = 0 mkdir("./213", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5459 ./strace-static-x86_64: Process 5459 attached [pid 5459] set_robust_list(0x555556375660, 24) = 0 [pid 5459] chdir("./213") = 0 [pid 5459] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5459] setpgid(0, 0) = 0 [pid 5459] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5459] write(3, "1000", 4) = 4 [pid 5459] close(3) = 0 [ 131.655735][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5459] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5459] memfd_create("syzkaller", 0) = 3 [pid 5459] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5459] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5459] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5459] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5459] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5459] close(3) = 0 [pid 5459] mkdir("./file0", 0777) = 0 [pid 5459] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5459] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5459] chdir("./file0") = 0 [pid 5459] ioctl(4, LOOP_CLR_FD) = 0 [pid 5459] close(4) = 0 [ 131.731863][ T5459] loop0: detected capacity change from 0 to 2048 [ 131.748573][ T5460] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 131.764850][ T5459] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 131.776417][ T5459] Remounting filesystem read-only [pid 5459] creat("./file2", 040) = 4 [pid 5459] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5459] exit_group(0) = ? [pid 5459] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5459, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./213", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./213", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./213/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./213/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./213/binderfs") = 0 [ 131.782009][ T5459] NILFS (loop0): error -5 truncating bmap (ino=16) [ 131.790958][ T5459] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 131.801086][ T5459] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 131.810319][ T5459] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./213/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./213/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./213/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./213/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./213/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./213/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./213") = 0 mkdir("./214", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5461 ./strace-static-x86_64: Process 5461 attached [pid 5461] set_robust_list(0x555556375660, 24) = 0 [ 131.826237][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 131.833438][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 131.840776][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 131.850118][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 131.859215][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 131.868538][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5461] chdir("./214") = 0 [pid 5461] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5461] setpgid(0, 0) = 0 [pid 5461] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5461] write(3, "1000", 4) = 4 [pid 5461] close(3) = 0 [pid 5461] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5461] memfd_create("syzkaller", 0) = 3 [pid 5461] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5461] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5461] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5461] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5461] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5461] close(3) = 0 [pid 5461] mkdir("./file0", 0777) = 0 [pid 5461] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5461] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5461] chdir("./file0") = 0 [pid 5461] ioctl(4, LOOP_CLR_FD) = 0 [pid 5461] close(4) = 0 [ 131.951209][ T5461] loop0: detected capacity change from 0 to 2048 [ 131.968001][ T5462] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 131.982969][ T5461] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 131.993235][ T5461] Remounting filesystem read-only [pid 5461] creat("./file2", 040) = 4 [pid 5461] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5461] exit_group(0) = ? [pid 5461] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5461, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./214", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./214", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./214/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./214/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./214/binderfs") = 0 [ 131.998647][ T5461] NILFS (loop0): error -5 truncating bmap (ino=16) [ 132.007123][ T5461] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 132.018151][ T5461] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 132.028394][ T5461] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./214/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./214/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./214/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./214/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./214/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./214/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./214") = 0 mkdir("./215", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5463 ./strace-static-x86_64: Process 5463 attached [ 132.047510][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 132.055018][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 132.062469][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 132.071633][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 132.080684][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 132.090130][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5463] set_robust_list(0x555556375660, 24) = 0 [pid 5463] chdir("./215") = 0 [pid 5463] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5463] setpgid(0, 0) = 0 [pid 5463] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5463] write(3, "1000", 4) = 4 [pid 5463] close(3) = 0 [pid 5463] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5463] memfd_create("syzkaller", 0) = 3 [pid 5463] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5463] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5463] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5463] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5463] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5463] close(3) = 0 [pid 5463] mkdir("./file0", 0777) = 0 [pid 5463] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5463] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5463] chdir("./file0") = 0 [pid 5463] ioctl(4, LOOP_CLR_FD) = 0 [pid 5463] close(4) = 0 [ 132.164203][ T5463] loop0: detected capacity change from 0 to 2048 [ 132.180049][ T5464] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 132.192821][ T5463] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 132.204449][ T5463] Remounting filesystem read-only [pid 5463] creat("./file2", 040) = 4 [pid 5463] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5463] exit_group(0) = ? [pid 5463] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5463, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./215", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./215", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./215/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./215/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./215/binderfs") = 0 [ 132.210195][ T5463] NILFS (loop0): error -5 truncating bmap (ino=16) [ 132.218047][ T5463] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 132.228396][ T5463] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 132.237904][ T5463] NILFS (loop0): error -5 truncating bmap (ino=16) [ 132.257465][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./215/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./215/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./215/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./215/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./215/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./215/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./215") = 0 mkdir("./216", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5465 ./strace-static-x86_64: Process 5465 attached [pid 5465] set_robust_list(0x555556375660, 24) = 0 [pid 5465] chdir("./216") = 0 [pid 5465] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5465] setpgid(0, 0) = 0 [pid 5465] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5465] write(3, "1000", 4) = 4 [pid 5465] close(3) = 0 [pid 5465] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5465] memfd_create("syzkaller", 0) = 3 [pid 5465] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 132.265209][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 132.273633][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 132.283198][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 132.293286][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 132.303192][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5465] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5465] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5465] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5465] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5465] close(3) = 0 [pid 5465] mkdir("./file0", 0777) = 0 [pid 5465] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5465] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5465] chdir("./file0") = 0 [pid 5465] ioctl(4, LOOP_CLR_FD) = 0 [pid 5465] close(4) = 0 [pid 5465] creat("./file2", 040) = 4 [ 132.370685][ T5465] loop0: detected capacity change from 0 to 2048 [ 132.385644][ T5466] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 132.395535][ T5465] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 132.407143][ T5465] Remounting filesystem read-only [ 132.413442][ T5465] NILFS (loop0): error -5 truncating bmap (ino=16) [pid 5465] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5465] exit_group(0) = ? [pid 5465] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5465, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./216", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./216", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./216/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./216/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./216/binderfs") = 0 [ 132.432819][ T5465] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 132.443224][ T5465] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 132.452599][ T5465] NILFS (loop0): error -5 truncating bmap (ino=16) [ 132.467484][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 132.474539][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 umount2("./216/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./216/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./216/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./216/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./216/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./216/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./216") = 0 mkdir("./217", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5467 ./strace-static-x86_64: Process 5467 attached [pid 5467] set_robust_list(0x555556375660, 24) = 0 [pid 5467] chdir("./217") = 0 [pid 5467] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5467] setpgid(0, 0) = 0 [pid 5467] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5467] write(3, "1000", 4) = 4 [pid 5467] close(3) = 0 [pid 5467] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5467] memfd_create("syzkaller", 0) = 3 [pid 5467] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 132.481948][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 132.490934][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 132.501105][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 132.510257][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5467] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5467] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5467] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5467] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5467] close(3) = 0 [pid 5467] mkdir("./file0", 0777) = 0 [pid 5467] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5467] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5467] chdir("./file0") = 0 [pid 5467] ioctl(4, LOOP_CLR_FD) = 0 [pid 5467] close(4) = 0 [ 132.572218][ T5467] loop0: detected capacity change from 0 to 2048 [ 132.589245][ T5468] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 132.600946][ T5467] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 132.612618][ T5467] Remounting filesystem read-only [pid 5467] creat("./file2", 040) = 4 [pid 5467] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5467] exit_group(0) = ? [pid 5467] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5467, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./217", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./217", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./217/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./217/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./217/binderfs") = 0 [ 132.618483][ T5467] NILFS (loop0): error -5 truncating bmap (ino=16) [ 132.627176][ T5467] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 132.637686][ T5467] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 132.647221][ T5467] NILFS (loop0): error -5 truncating bmap (ino=16) [ 132.662076][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./217/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./217/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./217/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./217/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./217/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./217/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./217") = 0 mkdir("./218", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5469 ./strace-static-x86_64: Process 5469 attached [pid 5469] set_robust_list(0x555556375660, 24) = 0 [pid 5469] chdir("./218") = 0 [pid 5469] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5469] setpgid(0, 0) = 0 [pid 5469] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5469] write(3, "1000", 4) = 4 [pid 5469] close(3) = 0 [pid 5469] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5469] memfd_create("syzkaller", 0) = 3 [pid 5469] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 132.669080][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 132.676483][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 132.685532][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 132.694577][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 132.705681][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5469] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5469] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5469] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5469] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5469] close(3) = 0 [pid 5469] mkdir("./file0", 0777) = 0 [pid 5469] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5469] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5469] chdir("./file0") = 0 [pid 5469] ioctl(4, LOOP_CLR_FD) = 0 [pid 5469] close(4) = 0 [pid 5469] creat("./file2", 040) = 4 [ 132.782731][ T5469] loop0: detected capacity change from 0 to 2048 [ 132.797602][ T5470] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 132.808262][ T5469] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 132.819152][ T5469] Remounting filesystem read-only [ 132.825063][ T5469] NILFS (loop0): error -5 truncating bmap (ino=16) [pid 5469] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5469] exit_group(0) = ? [pid 5469] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5469, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./218", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./218", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./218/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./218/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./218/binderfs") = 0 [ 132.833413][ T5469] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 132.844243][ T5469] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 132.853645][ T5469] NILFS (loop0): error -5 truncating bmap (ino=16) [ 132.873756][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./218/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./218/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./218/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./218/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./218/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./218/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./218") = 0 mkdir("./219", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5471 ./strace-static-x86_64: Process 5471 attached [pid 5471] set_robust_list(0x555556375660, 24) = 0 [pid 5471] chdir("./219") = 0 [pid 5471] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5471] setpgid(0, 0) = 0 [pid 5471] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5471] write(3, "1000", 4) = 4 [pid 5471] close(3) = 0 [pid 5471] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5471] memfd_create("syzkaller", 0) = 3 [pid 5471] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 132.880751][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 132.888581][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 132.897699][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 132.907624][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 132.917340][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5471] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5471] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5471] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5471] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5471] close(3) = 0 [pid 5471] mkdir("./file0", 0777) = 0 [pid 5471] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5471] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5471] chdir("./file0") = 0 [pid 5471] ioctl(4, LOOP_CLR_FD) = 0 [pid 5471] close(4) = 0 [ 132.977556][ T5471] loop0: detected capacity change from 0 to 2048 [ 132.994343][ T5472] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 133.001160][ T5471] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 133.017116][ T5471] Remounting filesystem read-only [pid 5471] creat("./file2", 040) = 4 [pid 5471] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5471] exit_group(0) = ? [pid 5471] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5471, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./219", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./219", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./219/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./219/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./219/binderfs") = 0 [ 133.023224][ T5471] NILFS (loop0): error -5 truncating bmap (ino=16) [ 133.033028][ T5471] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 133.043813][ T5471] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 133.053786][ T5471] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./219/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./219/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./219/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./219/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./219/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./219/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./219") = 0 mkdir("./220", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5473 ./strace-static-x86_64: Process 5473 attached [pid 5473] set_robust_list(0x555556375660, 24) = 0 [ 133.074589][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 133.081722][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 133.089118][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 133.098100][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 133.107159][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 133.116373][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5473] chdir("./220") = 0 [pid 5473] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5473] setpgid(0, 0) = 0 [pid 5473] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5473] write(3, "1000", 4) = 4 [pid 5473] close(3) = 0 [pid 5473] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5473] memfd_create("syzkaller", 0) = 3 [pid 5473] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5473] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5473] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5473] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5473] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5473] close(3) = 0 [pid 5473] mkdir("./file0", 0777) = 0 [pid 5473] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5473] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5473] chdir("./file0") = 0 [pid 5473] ioctl(4, LOOP_CLR_FD) = 0 [pid 5473] close(4) = 0 [ 133.189472][ T5473] loop0: detected capacity change from 0 to 2048 [ 133.205720][ T5474] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 133.217896][ T5473] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 133.228376][ T5473] Remounting filesystem read-only [pid 5473] creat("./file2", 040) = 4 [pid 5473] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5473] exit_group(0) = ? [pid 5473] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5473, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./220", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./220", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./220/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./220/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./220/binderfs") = 0 [ 133.234417][ T5473] NILFS (loop0): error -5 truncating bmap (ino=16) [ 133.242819][ T5473] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 133.253260][ T5473] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 133.262808][ T5473] NILFS (loop0): error -5 truncating bmap (ino=16) [ 133.281698][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./220/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./220/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./220/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./220/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./220/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./220/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./220") = 0 mkdir("./221", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5475 ./strace-static-x86_64: Process 5475 attached [pid 5475] set_robust_list(0x555556375660, 24) = 0 [pid 5475] chdir("./221") = 0 [ 133.289017][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 133.296852][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 133.305984][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 133.316086][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 133.325916][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5475] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5475] setpgid(0, 0) = 0 [pid 5475] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5475] write(3, "1000", 4) = 4 [pid 5475] close(3) = 0 [pid 5475] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5475] memfd_create("syzkaller", 0) = 3 [pid 5475] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5475] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5475] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5475] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5475] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5475] close(3) = 0 [pid 5475] mkdir("./file0", 0777) = 0 [pid 5475] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5475] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5475] chdir("./file0") = 0 [pid 5475] ioctl(4, LOOP_CLR_FD) = 0 [ 133.409806][ T5475] loop0: detected capacity change from 0 to 2048 [ 133.426542][ T5476] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5475] close(4) = 0 [pid 5475] creat("./file2", 040) = 4 [pid 5475] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5475] exit_group(0) = ? [pid 5475] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5475, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./221", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./221", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./221/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./221/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./221/binderfs") = 0 [ 133.451155][ T5475] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 133.462948][ T5475] Remounting filesystem read-only [ 133.468710][ T5475] NILFS (loop0): error -5 truncating bmap (ino=16) [ 133.477526][ T5475] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 133.487707][ T5475] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 133.496952][ T5475] NILFS (loop0): error -5 truncating bmap (ino=16) [ 133.518085][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 133.525554][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 133.532941][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 133.541872][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 133.550774][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./221/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./221/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./221/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./221/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./221/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./221/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./221") = 0 mkdir("./222", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 133.560022][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5477 ./strace-static-x86_64: Process 5477 attached [pid 5477] set_robust_list(0x555556375660, 24) = 0 [pid 5477] chdir("./222") = 0 [pid 5477] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5477] setpgid(0, 0) = 0 [pid 5477] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5477] write(3, "1000", 4) = 4 [pid 5477] close(3) = 0 [pid 5477] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5477] memfd_create("syzkaller", 0) = 3 [pid 5477] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5477] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5477] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5477] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5477] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5477] close(3) = 0 [pid 5477] mkdir("./file0", 0777) = 0 [pid 5477] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5477] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5477] chdir("./file0") = 0 [pid 5477] ioctl(4, LOOP_CLR_FD) = 0 [pid 5477] close(4) = 0 [ 133.634163][ T5477] loop0: detected capacity change from 0 to 2048 [ 133.648966][ T5478] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 133.672954][ T5477] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5477] creat("./file2", 040) = 4 [pid 5477] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5477] exit_group(0) = ? [pid 5477] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5477, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./222", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./222", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./222/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./222/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./222/binderfs") = 0 [ 133.683692][ T5477] Remounting filesystem read-only [ 133.689016][ T5477] NILFS (loop0): error -5 truncating bmap (ino=16) [ 133.699631][ T5477] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 133.710209][ T5477] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 133.721196][ T5477] NILFS (loop0): error -5 truncating bmap (ino=16) [ 133.739016][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 133.746428][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 133.754167][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 133.763392][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 133.773007][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./222/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./222/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./222/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./222/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./222/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./222/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./222") = 0 mkdir("./223", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5479 ./strace-static-x86_64: Process 5479 attached [pid 5479] set_robust_list(0x555556375660, 24) = 0 [pid 5479] chdir("./223") = 0 [pid 5479] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5479] setpgid(0, 0) = 0 [pid 5479] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5479] write(3, "1000", 4) = 4 [pid 5479] close(3) = 0 [ 133.782638][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5479] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5479] memfd_create("syzkaller", 0) = 3 [pid 5479] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5479] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5479] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5479] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5479] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5479] close(3) = 0 [pid 5479] mkdir("./file0", 0777) = 0 [pid 5479] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5479] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5479] chdir("./file0") = 0 [pid 5479] ioctl(4, LOOP_CLR_FD) = 0 [pid 5479] close(4) = 0 [ 133.863133][ T5479] loop0: detected capacity change from 0 to 2048 [ 133.881526][ T5480] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 133.895883][ T5479] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 133.906907][ T5479] Remounting filesystem read-only [pid 5479] creat("./file2", 040) = 4 [pid 5479] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5479] exit_group(0) = ? [pid 5479] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5479, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./223", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./223", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./223/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./223/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./223/binderfs") = 0 [ 133.913052][ T5479] NILFS (loop0): error -5 truncating bmap (ino=16) [ 133.921574][ T5479] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 133.932979][ T5479] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 133.942804][ T5479] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./223/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./223/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./223/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./223/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./223/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./223/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./223") = 0 mkdir("./224", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5481 ./strace-static-x86_64: Process 5481 attached [pid 5481] set_robust_list(0x555556375660, 24) = 0 [pid 5481] chdir("./224") = 0 [pid 5481] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [ 133.957286][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 133.964449][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 133.971971][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 133.980875][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 133.990414][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 133.999738][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5481] setpgid(0, 0) = 0 [pid 5481] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5481] write(3, "1000", 4) = 4 [pid 5481] close(3) = 0 [pid 5481] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5481] memfd_create("syzkaller", 0) = 3 [pid 5481] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5481] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5481] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5481] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5481] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5481] close(3) = 0 [pid 5481] mkdir("./file0", 0777) = 0 [pid 5481] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5481] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5481] chdir("./file0") = 0 [pid 5481] ioctl(4, LOOP_CLR_FD) = 0 [pid 5481] close(4) = 0 [ 134.078616][ T5481] loop0: detected capacity change from 0 to 2048 [ 134.097943][ T5482] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 134.114247][ T5481] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5481] creat("./file2", 040) = 4 [pid 5481] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5481] exit_group(0) = ? [pid 5481] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5481, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./224", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./224", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./224/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./224/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./224/binderfs") = 0 [ 134.128401][ T5481] Remounting filesystem read-only [ 134.134078][ T5481] NILFS (loop0): error -5 truncating bmap (ino=16) [ 134.142557][ T5481] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 134.152503][ T5481] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 134.162715][ T5481] NILFS (loop0): error -5 truncating bmap (ino=16) [ 134.179604][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 134.187313][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 134.195041][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 134.204097][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 134.213205][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./224/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./224/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./224/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./224/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./224/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./224/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./224") = 0 mkdir("./225", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5483 ./strace-static-x86_64: Process 5483 attached [pid 5483] set_robust_list(0x555556375660, 24) = 0 [pid 5483] chdir("./225") = 0 [pid 5483] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5483] setpgid(0, 0) = 0 [pid 5483] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5483] write(3, "1000", 4) = 4 [pid 5483] close(3) = 0 [pid 5483] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5483] memfd_create("syzkaller", 0) = 3 [ 134.223399][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5483] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5483] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5483] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5483] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5483] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5483] close(3) = 0 [pid 5483] mkdir("./file0", 0777) = 0 [pid 5483] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5483] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5483] chdir("./file0") = 0 [pid 5483] ioctl(4, LOOP_CLR_FD) = 0 [pid 5483] close(4) = 0 [ 134.293137][ T5483] loop0: detected capacity change from 0 to 2048 [ 134.309141][ T5484] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5483] creat("./file2", 040) = 4 [pid 5483] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5483] exit_group(0) = ? [pid 5483] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5483, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./225", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./225", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./225/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./225/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./225/binderfs") = 0 [ 134.334683][ T5483] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 134.344624][ T5483] Remounting filesystem read-only [ 134.349680][ T5483] NILFS (loop0): error -5 truncating bmap (ino=16) [ 134.358335][ T5483] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 134.369180][ T5483] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 134.378534][ T5483] NILFS (loop0): error -5 truncating bmap (ino=16) [ 134.423865][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 134.430933][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 134.438643][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 134.448001][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 134.457602][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./225/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./225/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./225/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./225/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./225/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./225/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./225") = 0 mkdir("./226", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 [ 134.467112][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5485 ./strace-static-x86_64: Process 5485 attached [pid 5485] set_robust_list(0x555556375660, 24) = 0 [pid 5485] chdir("./226") = 0 [pid 5485] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5485] setpgid(0, 0) = 0 [pid 5485] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5485] write(3, "1000", 4) = 4 [pid 5485] close(3) = 0 [pid 5485] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5485] memfd_create("syzkaller", 0) = 3 [pid 5485] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5485] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5485] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5485] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5485] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5485] close(3) = 0 [pid 5485] mkdir("./file0", 0777) = 0 [pid 5485] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5485] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5485] chdir("./file0") = 0 [pid 5485] ioctl(4, LOOP_CLR_FD) = 0 [pid 5485] close(4) = 0 [ 134.554204][ T5485] loop0: detected capacity change from 0 to 2048 [ 134.568919][ T5486] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 134.593606][ T5485] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5485] creat("./file2", 040) = 4 [pid 5485] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5485] exit_group(0) = ? [pid 5485] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5485, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./226", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./226", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./226/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./226/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./226/binderfs") = 0 [ 134.604221][ T5485] Remounting filesystem read-only [ 134.609923][ T5485] NILFS (loop0): error -5 truncating bmap (ino=16) [ 134.617717][ T5485] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 134.628349][ T5485] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 134.638277][ T5485] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./226/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./226/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./226/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [ 134.655233][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 134.662273][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 134.669571][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 134.678491][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 134.687409][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 134.696776][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer umount2("./226/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./226/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./226/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./226") = 0 mkdir("./227", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5487 ./strace-static-x86_64: Process 5487 attached [pid 5487] set_robust_list(0x555556375660, 24) = 0 [pid 5487] chdir("./227") = 0 [pid 5487] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5487] setpgid(0, 0) = 0 [pid 5487] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5487] write(3, "1000", 4) = 4 [pid 5487] close(3) = 0 [pid 5487] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5487] memfd_create("syzkaller", 0) = 3 [pid 5487] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5487] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5487] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5487] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5487] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5487] close(3) = 0 [pid 5487] mkdir("./file0", 0777) = 0 [pid 5487] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5487] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5487] chdir("./file0") = 0 [pid 5487] ioctl(4, LOOP_CLR_FD) = 0 [pid 5487] close(4) = 0 [ 134.766272][ T5487] loop0: detected capacity change from 0 to 2048 [ 134.782704][ T5488] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 134.804355][ T5487] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5487] creat("./file2", 040) = 4 [pid 5487] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5487] exit_group(0) = ? [pid 5487] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5487, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./227", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./227", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./227/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./227/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [ 134.824160][ T5487] Remounting filesystem read-only [ 134.831722][ T5487] NILFS (loop0): error -5 truncating bmap (ino=16) [ 134.839061][ T5487] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 134.849356][ T5487] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 134.858826][ T5487] NILFS (loop0): error -5 truncating bmap (ino=16) unlink("./227/binderfs") = 0 [ 134.876032][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 134.883281][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 134.891023][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 134.899951][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 134.909316][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./227/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./227/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./227/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./227/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./227/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./227/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./227") = 0 mkdir("./228", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5489 ./strace-static-x86_64: Process 5489 attached [pid 5489] set_robust_list(0x555556375660, 24) = 0 [pid 5489] chdir("./228") = 0 [pid 5489] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5489] setpgid(0, 0) = 0 [pid 5489] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5489] write(3, "1000", 4) = 4 [pid 5489] close(3) = 0 [ 134.919594][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5489] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5489] memfd_create("syzkaller", 0) = 3 [pid 5489] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5489] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5489] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5489] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5489] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5489] close(3) = 0 [pid 5489] mkdir("./file0", 0777) = 0 [pid 5489] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5489] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5489] chdir("./file0") = 0 [pid 5489] ioctl(4, LOOP_CLR_FD) = 0 [pid 5489] close(4) = 0 [ 134.992602][ T5489] loop0: detected capacity change from 0 to 2048 [ 135.014473][ T5490] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 135.032782][ T5489] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5489] creat("./file2", 040) = 4 [pid 5489] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5489] exit_group(0) = ? [pid 5489] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5489, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./228", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./228", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./228/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./228/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./228/binderfs") = 0 [ 135.043369][ T5489] Remounting filesystem read-only [ 135.050329][ T5489] NILFS (loop0): error -5 truncating bmap (ino=16) [ 135.059363][ T5489] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 135.070124][ T5489] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 135.079648][ T5489] NILFS (loop0): error -5 truncating bmap (ino=16) [ 135.095081][ T62] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 135.102396][ T62] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 135.109726][ T62] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 135.118766][ T62] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 135.128111][ T62] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./228/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./228/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./228/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./228/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./228/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./228/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./228") = 0 mkdir("./229", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5491 ./strace-static-x86_64: Process 5491 attached [pid 5491] set_robust_list(0x555556375660, 24) = 0 [pid 5491] chdir("./229") = 0 [pid 5491] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5491] setpgid(0, 0) = 0 [ 135.137833][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5491] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5491] write(3, "1000", 4) = 4 [pid 5491] close(3) = 0 [pid 5491] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5491] memfd_create("syzkaller", 0) = 3 [pid 5491] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5491] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5491] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5491] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5491] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5491] close(3) = 0 [pid 5491] mkdir("./file0", 0777) = 0 [pid 5491] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5491] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5491] chdir("./file0") = 0 [pid 5491] ioctl(4, LOOP_CLR_FD) = 0 [pid 5491] close(4) = 0 [ 135.213422][ T5491] loop0: detected capacity change from 0 to 2048 [ 135.230161][ T5492] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5491] creat("./file2", 040) = 4 [pid 5491] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5491] exit_group(0) = ? [pid 5491] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5491, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./229", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./229", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./229/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./229/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./229/binderfs") = 0 [ 135.256069][ T5491] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 135.267167][ T5491] Remounting filesystem read-only [ 135.272892][ T5491] NILFS (loop0): error -5 truncating bmap (ino=16) [ 135.280692][ T5491] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 135.292446][ T5491] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 135.302734][ T5491] NILFS (loop0): error -5 truncating bmap (ino=16) [ 135.324096][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 135.331144][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 135.338905][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 135.347958][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 135.356898][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./229/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./229/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./229/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./229/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./229/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./229/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./229") = 0 mkdir("./230", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 135.366901][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5493 attached [pid 5493] set_robust_list(0x555556375660, 24) = 0 [pid 5024] <... clone resumed>, child_tidptr=0x555556375650) = 5493 [pid 5493] chdir("./230") = 0 [pid 5493] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5493] setpgid(0, 0) = 0 [pid 5493] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5493] write(3, "1000", 4) = 4 [pid 5493] close(3) = 0 [pid 5493] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5493] memfd_create("syzkaller", 0) = 3 [pid 5493] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5493] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5493] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5493] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5493] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5493] close(3) = 0 [pid 5493] mkdir("./file0", 0777) = 0 [pid 5493] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5493] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5493] chdir("./file0") = 0 [pid 5493] ioctl(4, LOOP_CLR_FD) = 0 [pid 5493] close(4) = 0 [ 135.463314][ T5493] loop0: detected capacity change from 0 to 2048 [ 135.481595][ T5494] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5493] creat("./file2", 040) = 4 [ 135.511053][ T5493] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 135.522413][ T5493] Remounting filesystem read-only [ 135.529475][ T5493] NILFS (loop0): error -5 truncating bmap (ino=16) [ 135.538454][ T5493] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 135.548580][ T5493] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5493] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5493] exit_group(0) = ? [pid 5493] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5493, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./230", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./230", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./230/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./230/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./230/binderfs") = 0 [ 135.558554][ T5493] NILFS (loop0): error -5 truncating bmap (ino=16) [ 135.579376][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 135.586671][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 135.595524][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 135.604561][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./230/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./230/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./230/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./230/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./230/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./230/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./230") = 0 mkdir("./231", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5495 ./strace-static-x86_64: Process 5495 attached [pid 5495] set_robust_list(0x555556375660, 24) = 0 [pid 5495] chdir("./231") = 0 [pid 5495] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5495] setpgid(0, 0) = 0 [pid 5495] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5495] write(3, "1000", 4) = 4 [ 135.613582][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 135.624313][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5495] close(3) = 0 [pid 5495] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5495] memfd_create("syzkaller", 0) = 3 [pid 5495] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5495] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5495] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5495] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5495] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5495] close(3) = 0 [pid 5495] mkdir("./file0", 0777) = 0 [pid 5495] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5495] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5495] chdir("./file0") = 0 [pid 5495] ioctl(4, LOOP_CLR_FD) = 0 [pid 5495] close(4) = 0 [ 135.701995][ T5495] loop0: detected capacity change from 0 to 2048 [ 135.718716][ T5496] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 135.737667][ T5495] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5495] creat("./file2", 040) = 4 [pid 5495] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5495] exit_group(0) = ? [pid 5495] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5495, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./231", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./231", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./231/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./231/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./231/binderfs") = 0 [ 135.748186][ T5495] Remounting filesystem read-only [ 135.753970][ T5495] NILFS (loop0): error -5 truncating bmap (ino=16) [ 135.762134][ T5495] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 135.772599][ T5495] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 135.782141][ T5495] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./231/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./231/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./231/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./231/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./231/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./231/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./231") = 0 [ 135.797740][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 135.804855][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 135.815694][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 135.824984][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 135.834224][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 135.843734][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer mkdir("./232", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5497 ./strace-static-x86_64: Process 5497 attached [pid 5497] set_robust_list(0x555556375660, 24) = 0 [pid 5497] chdir("./232") = 0 [pid 5497] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5497] setpgid(0, 0) = 0 [pid 5497] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5497] write(3, "1000", 4) = 4 [pid 5497] close(3) = 0 [pid 5497] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5497] memfd_create("syzkaller", 0) = 3 [pid 5497] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5497] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5497] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5497] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5497] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5497] close(3) = 0 [pid 5497] mkdir("./file0", 0777) = 0 [pid 5497] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5497] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5497] chdir("./file0") = 0 [pid 5497] ioctl(4, LOOP_CLR_FD) = 0 [pid 5497] close(4) = 0 [ 135.922305][ T5497] loop0: detected capacity change from 0 to 2048 [ 135.936447][ T5498] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5497] creat("./file2", 040) = 4 [ 135.963845][ T5497] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 135.974714][ T5497] Remounting filesystem read-only [ 135.980365][ T5497] NILFS (loop0): error -5 truncating bmap (ino=16) [ 135.988345][ T5497] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 135.998544][ T5497] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5497] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5497] exit_group(0) = ? [pid 5497] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5497, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./232", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./232", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./232/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./232/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./232/binderfs") = 0 [ 136.009513][ T5497] NILFS (loop0): error -5 truncating bmap (ino=16) [ 136.029244][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 136.036359][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 136.043857][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 136.052800][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./232/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./232/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./232/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./232/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./232/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./232/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./232") = 0 mkdir("./233", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5499 ./strace-static-x86_64: Process 5499 attached [pid 5499] set_robust_list(0x555556375660, 24) = 0 [pid 5499] chdir("./233") = 0 [pid 5499] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5499] setpgid(0, 0) = 0 [pid 5499] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5499] write(3, "1000", 4) = 4 [pid 5499] close(3) = 0 [ 136.061789][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 136.070896][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5499] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5499] memfd_create("syzkaller", 0) = 3 [pid 5499] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5499] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5499] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5499] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5499] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5499] close(3) = 0 [pid 5499] mkdir("./file0", 0777) = 0 [pid 5499] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5499] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5499] chdir("./file0") = 0 [pid 5499] ioctl(4, LOOP_CLR_FD) = 0 [pid 5499] close(4) = 0 [ 136.150485][ T5499] loop0: detected capacity change from 0 to 2048 [ 136.166535][ T5500] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 136.176184][ T5499] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 136.187252][ T5499] Remounting filesystem read-only [pid 5499] creat("./file2", 040) = 4 [pid 5499] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5499] exit_group(0) = ? [pid 5499] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5499, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./233", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./233", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./233/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./233/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./233/binderfs") = 0 [ 136.198900][ T5499] NILFS (loop0): error -5 truncating bmap (ino=16) [ 136.213061][ T5499] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 136.223288][ T5499] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 136.232768][ T5499] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./233/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [ 136.248456][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 136.255604][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 136.263234][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 136.272228][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 136.281739][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 136.291138][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer umount2("./233/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./233/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./233/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./233/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./233/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./233") = 0 mkdir("./234", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5501 ./strace-static-x86_64: Process 5501 attached [pid 5501] set_robust_list(0x555556375660, 24) = 0 [pid 5501] chdir("./234") = 0 [pid 5501] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5501] setpgid(0, 0) = 0 [pid 5501] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5501] write(3, "1000", 4) = 4 [pid 5501] close(3) = 0 [pid 5501] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5501] memfd_create("syzkaller", 0) = 3 [pid 5501] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5501] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5501] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5501] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5501] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5501] close(3) = 0 [pid 5501] mkdir("./file0", 0777) = 0 [pid 5501] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5501] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5501] chdir("./file0") = 0 [pid 5501] ioctl(4, LOOP_CLR_FD) = 0 [pid 5501] close(4) = 0 [pid 5501] creat("./file2", 040) = 4 [ 136.371602][ T5501] loop0: detected capacity change from 0 to 2048 [ 136.387985][ T5502] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 136.395362][ T5501] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 136.408753][ T5501] Remounting filesystem read-only [ 136.414168][ T5501] NILFS (loop0): error -5 truncating bmap (ino=16) [pid 5501] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5501] exit_group(0) = ? [pid 5501] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5501, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./234", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./234", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./234/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./234/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./234/binderfs") = 0 [ 136.423286][ T5501] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 136.433739][ T5501] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 136.451309][ T5501] NILFS (loop0): error -5 truncating bmap (ino=16) [ 136.466771][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./234/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./234/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./234/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./234/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./234/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./234/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./234") = 0 mkdir("./235", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5503 ./strace-static-x86_64: Process 5503 attached [pid 5503] set_robust_list(0x555556375660, 24) = 0 [pid 5503] chdir("./235") = 0 [pid 5503] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [ 136.474115][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 136.481553][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 136.490465][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 136.499577][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 136.508913][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5503] setpgid(0, 0) = 0 [pid 5503] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5503] write(3, "1000", 4) = 4 [pid 5503] close(3) = 0 [pid 5503] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5503] memfd_create("syzkaller", 0) = 3 [pid 5503] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5503] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5503] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5503] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5503] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5503] close(3) = 0 [pid 5503] mkdir("./file0", 0777) = 0 [pid 5503] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5503] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5503] chdir("./file0") = 0 [pid 5503] ioctl(4, LOOP_CLR_FD) = 0 [pid 5503] close(4) = 0 [ 136.586239][ T5503] loop0: detected capacity change from 0 to 2048 [ 136.602798][ T5504] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 136.619302][ T5503] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 136.629734][ T5503] Remounting filesystem read-only [pid 5503] creat("./file2", 040) = 4 [pid 5503] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5503] exit_group(0) = ? [pid 5503] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5503, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./235", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./235", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./235/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./235/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./235/binderfs") = 0 [ 136.635105][ T5503] NILFS (loop0): error -5 truncating bmap (ino=16) [ 136.650206][ T5503] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 136.660154][ T5503] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 136.669414][ T5503] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./235/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./235/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./235/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./235/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./235/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./235/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./235") = 0 mkdir("./236", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5505 ./strace-static-x86_64: Process 5505 attached [ 136.684813][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 136.692302][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 136.699612][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 136.709047][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 136.718073][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 136.727332][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5505] set_robust_list(0x555556375660, 24) = 0 [pid 5505] chdir("./236") = 0 [pid 5505] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5505] setpgid(0, 0) = 0 [pid 5505] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5505] write(3, "1000", 4) = 4 [pid 5505] close(3) = 0 [pid 5505] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5505] memfd_create("syzkaller", 0) = 3 [pid 5505] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5505] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5505] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5505] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5505] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5505] close(3) = 0 [pid 5505] mkdir("./file0", 0777) = 0 [pid 5505] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5505] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5505] chdir("./file0") = 0 [pid 5505] ioctl(4, LOOP_CLR_FD) = 0 [pid 5505] close(4) = 0 [pid 5505] creat("./file2", 040) = 4 [ 136.802212][ T5505] loop0: detected capacity change from 0 to 2048 [ 136.817714][ T5506] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 136.825723][ T5505] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 136.838390][ T5505] Remounting filesystem read-only [ 136.843795][ T5505] NILFS (loop0): error -5 truncating bmap (ino=16) [pid 5505] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5505] exit_group(0) = ? [pid 5505] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5505, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./236", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./236", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./236/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./236/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./236/binderfs") = 0 [ 136.851391][ T5505] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 136.862930][ T5505] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 136.872345][ T5505] NILFS (loop0): error -5 truncating bmap (ino=16) [ 136.890195][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./236/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./236/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./236/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./236/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./236/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./236/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./236") = 0 mkdir("./237", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5507 [ 136.897310][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 136.905841][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 136.914791][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 136.924071][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 136.933219][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer ./strace-static-x86_64: Process 5507 attached [pid 5507] set_robust_list(0x555556375660, 24) = 0 [pid 5507] chdir("./237") = 0 [pid 5507] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5507] setpgid(0, 0) = 0 [pid 5507] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5507] write(3, "1000", 4) = 4 [pid 5507] close(3) = 0 [pid 5507] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5507] memfd_create("syzkaller", 0) = 3 [pid 5507] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5507] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5507] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5507] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5507] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5507] close(3) = 0 [pid 5507] mkdir("./file0", 0777) = 0 [pid 5507] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5507] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5507] chdir("./file0") = 0 [pid 5507] ioctl(4, LOOP_CLR_FD) = 0 [pid 5507] close(4) = 0 [ 137.025188][ T5507] loop0: detected capacity change from 0 to 2048 [ 137.043415][ T5508] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 137.057767][ T5507] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 137.068227][ T5507] Remounting filesystem read-only [pid 5507] creat("./file2", 040) = 4 [pid 5507] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5507] exit_group(0) = ? [pid 5507] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5507, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./237", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./237", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./237/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./237/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./237/binderfs") = 0 [ 137.074097][ T5507] NILFS (loop0): error -5 truncating bmap (ino=16) [ 137.085138][ T5507] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 137.095607][ T5507] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 137.105438][ T5507] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./237/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [ 137.123676][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 137.130743][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 137.138863][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 137.147957][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 137.156942][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 137.166999][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer umount2("./237/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./237/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./237/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./237/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./237/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./237") = 0 mkdir("./238", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5509 ./strace-static-x86_64: Process 5509 attached [pid 5509] set_robust_list(0x555556375660, 24) = 0 [pid 5509] chdir("./238") = 0 [pid 5509] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5509] setpgid(0, 0) = 0 [pid 5509] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5509] write(3, "1000", 4) = 4 [pid 5509] close(3) = 0 [pid 5509] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5509] memfd_create("syzkaller", 0) = 3 [pid 5509] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5509] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5509] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5509] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5509] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5509] close(3) = 0 [pid 5509] mkdir("./file0", 0777) = 0 [pid 5509] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5509] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5509] chdir("./file0") = 0 [pid 5509] ioctl(4, LOOP_CLR_FD) = 0 [pid 5509] close(4) = 0 [ 137.252835][ T5509] loop0: detected capacity change from 0 to 2048 [ 137.268596][ T5510] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 137.284134][ T5509] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 137.294468][ T5509] Remounting filesystem read-only [pid 5509] creat("./file2", 040) = 4 [pid 5509] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5509] exit_group(0) = ? [pid 5509] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5509, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./238", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./238", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./238/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./238/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./238/binderfs") = 0 [ 137.299754][ T5509] NILFS (loop0): error -5 truncating bmap (ino=16) [ 137.307960][ T5509] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 137.318081][ T5509] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 137.329386][ T5509] NILFS (loop0): error -5 truncating bmap (ino=16) [ 137.344322][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./238/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./238/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./238/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./238/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./238/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./238/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./238") = 0 mkdir("./239", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5511 ./strace-static-x86_64: Process 5511 attached [pid 5511] set_robust_list(0x555556375660, 24) = 0 [pid 5511] chdir("./239") = 0 [pid 5511] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5511] setpgid(0, 0) = 0 [pid 5511] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5511] write(3, "1000", 4) = 4 [pid 5511] close(3) = 0 [pid 5511] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5511] memfd_create("syzkaller", 0) = 3 [pid 5511] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 137.351352][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 137.358898][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 137.367885][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 137.376906][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 137.386493][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5511] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5511] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5511] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5511] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5511] close(3) = 0 [pid 5511] mkdir("./file0", 0777) = 0 [pid 5511] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5511] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5511] chdir("./file0") = 0 [pid 5511] ioctl(4, LOOP_CLR_FD) = 0 [pid 5511] close(4) = 0 [ 137.449182][ T5511] loop0: detected capacity change from 0 to 2048 [ 137.467210][ T5512] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 137.482144][ T5511] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 137.492489][ T5511] Remounting filesystem read-only [pid 5511] creat("./file2", 040) = 4 [pid 5511] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5511] exit_group(0) = ? [pid 5511] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5511, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./239", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./239", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./239/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./239/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./239/binderfs") = 0 [ 137.499637][ T5511] NILFS (loop0): error -5 truncating bmap (ino=16) [ 137.507747][ T5511] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 137.518173][ T5511] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 137.529353][ T5511] NILFS (loop0): error -5 truncating bmap (ino=16) [ 137.547526][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 137.554664][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 137.562318][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 137.571184][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 137.580669][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./239/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./239/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./239/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./239/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./239/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./239/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./239") = 0 mkdir("./240", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 137.591119][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5513 ./strace-static-x86_64: Process 5513 attached [pid 5513] set_robust_list(0x555556375660, 24) = 0 [pid 5513] chdir("./240") = 0 [pid 5513] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5513] setpgid(0, 0) = 0 [pid 5513] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5513] write(3, "1000", 4) = 4 [pid 5513] close(3) = 0 [pid 5513] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5513] memfd_create("syzkaller", 0) = 3 [pid 5513] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5513] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5513] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5513] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5513] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5513] close(3) = 0 [pid 5513] mkdir("./file0", 0777) = 0 [pid 5513] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5513] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5513] chdir("./file0") = 0 [pid 5513] ioctl(4, LOOP_CLR_FD) = 0 [pid 5513] close(4) = 0 [ 137.678717][ T5513] loop0: detected capacity change from 0 to 2048 [ 137.696364][ T5514] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5513] creat("./file2", 040) = 4 [pid 5513] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5513] exit_group(0) = ? [pid 5513] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5513, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./240", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./240", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./240/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./240/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./240/binderfs") = 0 [ 137.723413][ T5513] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 137.734924][ T5513] Remounting filesystem read-only [ 137.740094][ T5513] NILFS (loop0): error -5 truncating bmap (ino=16) [ 137.748133][ T5513] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 137.758628][ T5513] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 137.768184][ T5513] NILFS (loop0): error -5 truncating bmap (ino=16) [ 137.788385][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 137.795424][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 137.802949][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 137.811881][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 137.821372][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./240/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./240/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./240/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./240/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./240/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./240/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./240") = 0 mkdir("./241", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5515 [ 137.831179][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer ./strace-static-x86_64: Process 5515 attached [pid 5515] set_robust_list(0x555556375660, 24) = 0 [pid 5515] chdir("./241") = 0 [pid 5515] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5515] setpgid(0, 0) = 0 [pid 5515] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5515] write(3, "1000", 4) = 4 [pid 5515] close(3) = 0 [pid 5515] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5515] memfd_create("syzkaller", 0) = 3 [pid 5515] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5515] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5515] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5515] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5515] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5515] close(3) = 0 [pid 5515] mkdir("./file0", 0777) = 0 [pid 5515] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5515] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5515] chdir("./file0") = 0 [pid 5515] ioctl(4, LOOP_CLR_FD) = 0 [pid 5515] close(4) = 0 [ 137.917295][ T5515] loop0: detected capacity change from 0 to 2048 [ 137.934335][ T5516] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 137.953348][ T5515] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5515] creat("./file2", 040) = 4 [pid 5515] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5515] exit_group(0) = ? [pid 5515] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5515, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./241", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./241", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./241/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./241/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./241/binderfs") = 0 [ 137.965179][ T5515] Remounting filesystem read-only [ 137.970373][ T5515] NILFS (loop0): error -5 truncating bmap (ino=16) [ 137.978560][ T5515] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 137.988763][ T5515] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 137.998564][ T5515] NILFS (loop0): error -5 truncating bmap (ino=16) [ 138.018758][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 138.025878][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 138.033452][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 138.042416][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 138.051527][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./241/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./241/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./241/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./241/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./241/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./241/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./241") = 0 mkdir("./242", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 [ 138.060619][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5517 ./strace-static-x86_64: Process 5517 attached [pid 5517] set_robust_list(0x555556375660, 24) = 0 [pid 5517] chdir("./242") = 0 [pid 5517] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5517] setpgid(0, 0) = 0 [pid 5517] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5517] write(3, "1000", 4) = 4 [pid 5517] close(3) = 0 [pid 5517] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5517] memfd_create("syzkaller", 0) = 3 [pid 5517] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5517] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5517] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5517] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5517] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5517] close(3) = 0 [pid 5517] mkdir("./file0", 0777) = 0 [pid 5517] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5517] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5517] chdir("./file0") = 0 [pid 5517] ioctl(4, LOOP_CLR_FD) = 0 [pid 5517] close(4) = 0 [ 138.160614][ T5517] loop0: detected capacity change from 0 to 2048 [ 138.179498][ T5518] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5517] creat("./file2", 040) = 4 [pid 5517] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5517] exit_group(0) = ? [pid 5517] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5517, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./242", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./242", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./242/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./242/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./242/binderfs") = 0 [ 138.204507][ T5517] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 138.215176][ T5517] Remounting filesystem read-only [ 138.220403][ T5517] NILFS (loop0): error -5 truncating bmap (ino=16) [ 138.229516][ T5517] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 138.239874][ T5517] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 138.249526][ T5517] NILFS (loop0): error -5 truncating bmap (ino=16) [ 138.265525][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 138.273580][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 138.281009][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 138.291191][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 138.302046][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./242/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./242/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./242/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./242/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./242/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./242/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./242") = 0 mkdir("./243", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5519 ./strace-static-x86_64: Process 5519 attached [ 138.311533][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5519] set_robust_list(0x555556375660, 24) = 0 [pid 5519] chdir("./243") = 0 [pid 5519] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5519] setpgid(0, 0) = 0 [pid 5519] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5519] write(3, "1000", 4) = 4 [pid 5519] close(3) = 0 [pid 5519] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5519] memfd_create("syzkaller", 0) = 3 [pid 5519] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5519] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5519] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5519] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5519] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5519] close(3) = 0 [pid 5519] mkdir("./file0", 0777) = 0 [pid 5519] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5519] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5519] chdir("./file0") = 0 [pid 5519] ioctl(4, LOOP_CLR_FD) = 0 [pid 5519] close(4) = 0 [ 138.396827][ T5519] loop0: detected capacity change from 0 to 2048 [ 138.413831][ T5520] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 138.425733][ T5519] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 138.436415][ T5519] Remounting filesystem read-only [pid 5519] creat("./file2", 040) = 4 [pid 5519] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5519] exit_group(0) = ? [pid 5519] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5519, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- umount2("./243", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./243", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./243/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./243/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./243/binderfs") = 0 [ 138.442353][ T5519] NILFS (loop0): error -5 truncating bmap (ino=16) [ 138.450114][ T5519] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 138.460668][ T5519] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 138.470110][ T5519] NILFS (loop0): error -5 truncating bmap (ino=16) [ 138.487299][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./243/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./243/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./243/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./243/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./243/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./243/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./243") = 0 mkdir("./244", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5521 ./strace-static-x86_64: Process 5521 attached [pid 5521] set_robust_list(0x555556375660, 24) = 0 [pid 5521] chdir("./244") = 0 [pid 5521] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5521] setpgid(0, 0) = 0 [pid 5521] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5521] write(3, "1000", 4) = 4 [pid 5521] close(3) = 0 [pid 5521] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5521] memfd_create("syzkaller", 0) = 3 [pid 5521] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 138.494373][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 138.502079][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 138.510950][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 138.520034][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 138.529320][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5521] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5521] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5521] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5521] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5521] close(3) = 0 [pid 5521] mkdir("./file0", 0777) = 0 [pid 5521] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5521] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5521] chdir("./file0") = 0 [pid 5521] ioctl(4, LOOP_CLR_FD) = 0 [pid 5521] close(4) = 0 [ 138.597938][ T5521] loop0: detected capacity change from 0 to 2048 [ 138.614969][ T5522] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 138.632981][ T5521] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 138.643174][ T5521] Remounting filesystem read-only [pid 5521] creat("./file2", 040) = 4 [pid 5521] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5521] exit_group(0) = ? [pid 5521] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5521, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./244", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./244", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./244/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./244/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./244/binderfs") = 0 [ 138.648275][ T5521] NILFS (loop0): error -5 truncating bmap (ino=16) [ 138.657348][ T5521] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 138.667807][ T5521] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 138.677099][ T5521] NILFS (loop0): error -5 truncating bmap (ino=16) [ 138.698786][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 138.706623][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 138.714002][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 138.723060][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 138.732088][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./244/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./244/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./244/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./244/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./244/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./244/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./244") = 0 mkdir("./245", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 138.741272][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5523 ./strace-static-x86_64: Process 5523 attached [pid 5523] set_robust_list(0x555556375660, 24) = 0 [pid 5523] chdir("./245") = 0 [pid 5523] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5523] setpgid(0, 0) = 0 [pid 5523] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5523] write(3, "1000", 4) = 4 [pid 5523] close(3) = 0 [pid 5523] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5523] memfd_create("syzkaller", 0) = 3 [pid 5523] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5523] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5523] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5523] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5523] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5523] close(3) = 0 [pid 5523] mkdir("./file0", 0777) = 0 [pid 5523] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5523] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5523] chdir("./file0") = 0 [pid 5523] ioctl(4, LOOP_CLR_FD) = 0 [pid 5523] close(4) = 0 [ 138.815272][ T5523] loop0: detected capacity change from 0 to 2048 [ 138.831960][ T5524] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5523] creat("./file2", 040) = 4 [ 138.862921][ T5523] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 138.878419][ T5523] Remounting filesystem read-only [ 138.884350][ T5523] NILFS (loop0): error -5 truncating bmap (ino=16) [ 138.891815][ T5523] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 138.902451][ T5523] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5523] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5523] exit_group(0) = ? [pid 5523] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5523, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./245", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./245", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./245/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./245/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./245/binderfs") = 0 [ 138.912251][ T5523] NILFS (loop0): error -5 truncating bmap (ino=16) [ 138.927712][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 138.934801][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 138.942282][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 138.951522][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./245/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./245/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./245/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./245/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./245/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./245/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./245") = 0 mkdir("./246", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5525 ./strace-static-x86_64: Process 5525 attached [pid 5525] set_robust_list(0x555556375660, 24) = 0 [pid 5525] chdir("./246") = 0 [pid 5525] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5525] setpgid(0, 0) = 0 [pid 5525] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5525] write(3, "1000", 4) = 4 [pid 5525] close(3) = 0 [ 138.960692][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 138.970031][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5525] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5525] memfd_create("syzkaller", 0) = 3 [pid 5525] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5525] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5525] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5525] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5525] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5525] close(3) = 0 [pid 5525] mkdir("./file0", 0777) = 0 [pid 5525] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5525] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5525] chdir("./file0") = 0 [pid 5525] ioctl(4, LOOP_CLR_FD) = 0 [pid 5525] close(4) = 0 [pid 5525] creat("./file2", 040) = 4 [ 139.056044][ T5525] loop0: detected capacity change from 0 to 2048 [ 139.071335][ T5526] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 139.081174][ T5525] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 139.092357][ T5525] Remounting filesystem read-only [ 139.097956][ T5525] NILFS (loop0): error -5 truncating bmap (ino=16) [pid 5525] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5525] exit_group(0) = ? [pid 5525] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5525, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./246", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./246", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./246/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./246/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./246/binderfs") = 0 [ 139.105830][ T5525] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 139.116287][ T5525] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 139.125936][ T5525] NILFS (loop0): error -5 truncating bmap (ino=16) [ 139.141074][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 139.149068][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 umount2("./246/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./246/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./246/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./246/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./246/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./246/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./246") = 0 mkdir("./247", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5527 ./strace-static-x86_64: Process 5527 attached [pid 5527] set_robust_list(0x555556375660, 24) = 0 [pid 5527] chdir("./247") = 0 [pid 5527] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5527] setpgid(0, 0) = 0 [pid 5527] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5527] write(3, "1000", 4) = 4 [pid 5527] close(3) = 0 [pid 5527] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5527] memfd_create("syzkaller", 0) = 3 [pid 5527] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 139.156708][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 139.165861][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 139.174809][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 139.184069][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5527] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5527] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5527] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5527] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5527] close(3) = 0 [pid 5527] mkdir("./file0", 0777) = 0 [pid 5527] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5527] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5527] chdir("./file0") = 0 [pid 5527] ioctl(4, LOOP_CLR_FD) = 0 [pid 5527] close(4) = 0 [ 139.243269][ T5527] loop0: detected capacity change from 0 to 2048 [ 139.260157][ T5528] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 139.269312][ T5527] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 139.281272][ T5527] Remounting filesystem read-only [ 139.287183][ T5527] NILFS (loop0): error -5 truncating bmap (ino=16) [pid 5527] creat("./file2", 040) = 4 [pid 5527] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5527] exit_group(0) = ? [pid 5527] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5527, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./247", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./247", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./247/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./247/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./247/binderfs") = 0 [ 139.295229][ T5527] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 139.306185][ T5527] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 139.315725][ T5527] NILFS (loop0): error -5 truncating bmap (ino=16) [ 139.331308][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./247/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./247/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./247/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./247/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./247/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 [ 139.338456][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 139.345835][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 139.355162][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 139.364104][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 139.373306][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer rmdir("./247/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./247") = 0 mkdir("./248", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5529 ./strace-static-x86_64: Process 5529 attached [pid 5529] set_robust_list(0x555556375660, 24) = 0 [pid 5529] chdir("./248") = 0 [pid 5529] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5529] setpgid(0, 0) = 0 [pid 5529] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5529] write(3, "1000", 4) = 4 [pid 5529] close(3) = 0 [pid 5529] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5529] memfd_create("syzkaller", 0) = 3 [pid 5529] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5529] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5529] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5529] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5529] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5529] close(3) = 0 [pid 5529] mkdir("./file0", 0777) = 0 [pid 5529] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5529] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5529] chdir("./file0") = 0 [pid 5529] ioctl(4, LOOP_CLR_FD) = 0 [pid 5529] close(4) = 0 [ 139.516365][ T5529] loop0: detected capacity change from 0 to 2048 [ 139.533961][ T5530] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 139.549554][ T5529] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 139.561649][ T5529] Remounting filesystem read-only [pid 5529] creat("./file2", 040) = 4 [pid 5529] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5529] exit_group(0) = ? [pid 5529] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5529, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./248", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./248", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./248/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./248/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./248/binderfs") = 0 [ 139.567400][ T5529] NILFS (loop0): error -5 truncating bmap (ino=16) [ 139.576486][ T5529] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 139.587007][ T5529] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 139.596696][ T5529] NILFS (loop0): error -5 truncating bmap (ino=16) [ 139.618213][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 139.625378][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 139.633055][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 139.642081][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 139.650985][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./248/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./248/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./248/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./248/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./248/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./248/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./248") = 0 mkdir("./249", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5531 ./strace-static-x86_64: Process 5531 attached [pid 5531] set_robust_list(0x555556375660, 24) = 0 [pid 5531] chdir("./249") = 0 [pid 5531] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5531] setpgid(0, 0) = 0 [pid 5531] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5531] write(3, "1000", 4) = 4 [pid 5531] close(3) = 0 [pid 5531] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5531] memfd_create("syzkaller", 0) = 3 [pid 5531] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 139.660195][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5531] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5531] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5531] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5531] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5531] close(3) = 0 [pid 5531] mkdir("./file0", 0777) = 0 [pid 5531] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5531] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5531] chdir("./file0") = 0 [pid 5531] ioctl(4, LOOP_CLR_FD) = 0 [pid 5531] close(4) = 0 [ 139.720744][ T5531] loop0: detected capacity change from 0 to 2048 [ 139.737729][ T5532] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 139.749850][ T5531] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 139.760398][ T5531] Remounting filesystem read-only [pid 5531] creat("./file2", 040) = 4 [pid 5531] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5531] exit_group(0) = ? [pid 5531] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5531, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./249", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./249", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./249/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./249/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./249/binderfs") = 0 [ 139.766263][ T5531] NILFS (loop0): error -5 truncating bmap (ino=16) [ 139.775231][ T5531] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 139.785424][ T5531] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 139.794704][ T5531] NILFS (loop0): error -5 truncating bmap (ino=16) [ 139.811641][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./249/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./249/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./249/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./249/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./249/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./249/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./249") = 0 mkdir("./250", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5533 [ 139.818697][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 139.826382][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 139.835369][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 139.844429][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 139.853559][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer ./strace-static-x86_64: Process 5533 attached [pid 5533] set_robust_list(0x555556375660, 24) = 0 [pid 5533] chdir("./250") = 0 [pid 5533] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5533] setpgid(0, 0) = 0 [pid 5533] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5533] write(3, "1000", 4) = 4 [pid 5533] close(3) = 0 [pid 5533] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5533] memfd_create("syzkaller", 0) = 3 [pid 5533] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5533] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5533] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5533] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5533] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5533] close(3) = 0 [pid 5533] mkdir("./file0", 0777) = 0 [pid 5533] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5533] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5533] chdir("./file0") = 0 [pid 5533] ioctl(4, LOOP_CLR_FD) = 0 [pid 5533] close(4) = 0 [ 139.939098][ T5533] loop0: detected capacity change from 0 to 2048 [ 139.955480][ T5534] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 139.976859][ T5533] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5533] creat("./file2", 040) = 4 [pid 5533] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5533] exit_group(0) = ? [pid 5533] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5533, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./250", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./250", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./250/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./250/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./250/binderfs") = 0 [ 139.992275][ T5533] Remounting filesystem read-only [ 139.997479][ T5533] NILFS (loop0): error -5 truncating bmap (ino=16) [ 140.005979][ T5533] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 140.016602][ T5533] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 140.026353][ T5533] NILFS (loop0): error -5 truncating bmap (ino=16) [ 140.042435][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 140.049512][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 140.057001][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 140.066001][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 140.075000][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./250/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./250/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./250/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./250/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./250/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./250/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./250") = 0 mkdir("./251", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 140.084407][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5535 ./strace-static-x86_64: Process 5535 attached [pid 5535] set_robust_list(0x555556375660, 24) = 0 [pid 5535] chdir("./251") = 0 [pid 5535] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5535] setpgid(0, 0) = 0 [pid 5535] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5535] write(3, "1000", 4) = 4 [pid 5535] close(3) = 0 [pid 5535] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5535] memfd_create("syzkaller", 0) = 3 [pid 5535] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5535] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5535] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5535] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5535] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5535] close(3) = 0 [pid 5535] mkdir("./file0", 0777) = 0 [pid 5535] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5535] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5535] chdir("./file0") = 0 [pid 5535] ioctl(4, LOOP_CLR_FD) = 0 [pid 5535] close(4) = 0 [ 140.173732][ T5535] loop0: detected capacity change from 0 to 2048 [ 140.188627][ T5536] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 140.213742][ T5535] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5535] creat("./file2", 040) = 4 [pid 5535] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5535] exit_group(0) = ? [pid 5535] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5535, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- umount2("./251", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./251", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./251/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./251/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./251/binderfs") = 0 [ 140.225419][ T5535] Remounting filesystem read-only [ 140.230953][ T5535] NILFS (loop0): error -5 truncating bmap (ino=16) [ 140.239168][ T5535] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 140.249527][ T5535] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 140.259552][ T5535] NILFS (loop0): error -5 truncating bmap (ino=16) [ 140.276839][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 140.284065][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 140.291768][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 140.300933][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 140.310489][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./251/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./251/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./251/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./251/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./251/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./251/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./251") = 0 mkdir("./252", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 140.320206][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5537 ./strace-static-x86_64: Process 5537 attached [pid 5537] set_robust_list(0x555556375660, 24) = 0 [pid 5537] chdir("./252") = 0 [pid 5537] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5537] setpgid(0, 0) = 0 [pid 5537] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5537] write(3, "1000", 4) = 4 [pid 5537] close(3) = 0 [pid 5537] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5537] memfd_create("syzkaller", 0) = 3 [pid 5537] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5537] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5537] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5537] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5537] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5537] close(3) = 0 [pid 5537] mkdir("./file0", 0777) = 0 [pid 5537] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5537] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5537] chdir("./file0") = 0 [pid 5537] ioctl(4, LOOP_CLR_FD) = 0 [pid 5537] close(4) = 0 [ 140.407279][ T5537] loop0: detected capacity change from 0 to 2048 [ 140.425381][ T5538] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 140.434065][ T5537] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 140.446811][ T5537] Remounting filesystem read-only [pid 5537] creat("./file2", 040) = 4 [pid 5537] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5537] exit_group(0) = ? [pid 5537] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5537, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./252", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./252", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./252/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./252/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./252/binderfs") = 0 [ 140.452822][ T5537] NILFS (loop0): error -5 truncating bmap (ino=16) [ 140.461362][ T5537] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 140.471958][ T5537] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 140.481769][ T5537] NILFS (loop0): error -5 truncating bmap (ino=16) [ 140.498630][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./252/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./252/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./252/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./252/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./252/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./252/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./252") = 0 mkdir("./253", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5539 ./strace-static-x86_64: Process 5539 attached [pid 5539] set_robust_list(0x555556375660, 24) = 0 [pid 5539] chdir("./253") = 0 [pid 5539] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5539] setpgid(0, 0) = 0 [pid 5539] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5539] write(3, "1000", 4) = 4 [pid 5539] close(3) = 0 [ 140.506576][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 140.513979][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 140.522901][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 140.532202][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 140.541343][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5539] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5539] memfd_create("syzkaller", 0) = 3 [pid 5539] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5539] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5539] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5539] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5539] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5539] close(3) = 0 [pid 5539] mkdir("./file0", 0777) = 0 [pid 5539] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5539] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5539] chdir("./file0") = 0 [pid 5539] ioctl(4, LOOP_CLR_FD) = 0 [pid 5539] close(4) = 0 [ 140.621620][ T5539] loop0: detected capacity change from 0 to 2048 [ 140.640609][ T5540] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 140.657840][ T5539] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5539] creat("./file2", 040) = 4 [pid 5539] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5539] exit_group(0) = ? [pid 5539] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5539, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./253", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./253", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./253/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./253/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./253/binderfs") = 0 [ 140.668926][ T5539] Remounting filesystem read-only [ 140.674972][ T5539] NILFS (loop0): error -5 truncating bmap (ino=16) [ 140.683631][ T5539] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 140.695910][ T5539] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 140.705772][ T5539] NILFS (loop0): error -5 truncating bmap (ino=16) [ 140.726102][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 140.733190][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 140.740554][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 140.750129][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 140.760128][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./253/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./253/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./253/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./253/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./253/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./253/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./253") = 0 mkdir("./254", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5541 ./strace-static-x86_64: Process 5541 attached [pid 5541] set_robust_list(0x555556375660, 24) = 0 [pid 5541] chdir("./254") = 0 [pid 5541] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5541] setpgid(0, 0) = 0 [pid 5541] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5541] write(3, "1000", 4) = 4 [pid 5541] close(3) = 0 [pid 5541] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5541] memfd_create("syzkaller", 0) = 3 [pid 5541] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 140.769473][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5541] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5541] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5541] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5541] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5541] close(3) = 0 [pid 5541] mkdir("./file0", 0777) = 0 [pid 5541] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5541] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5541] chdir("./file0") = 0 [pid 5541] ioctl(4, LOOP_CLR_FD) = 0 [pid 5541] close(4) = 0 [ 140.828052][ T5541] loop0: detected capacity change from 0 to 2048 [ 140.843546][ T5542] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 140.857386][ T5541] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 140.868000][ T5541] Remounting filesystem read-only [pid 5541] creat("./file2", 040) = 4 [pid 5541] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5541] exit_group(0) = ? [pid 5541] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5541, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./254", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./254", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./254/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./254/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./254/binderfs") = 0 [ 140.874267][ T5541] NILFS (loop0): error -5 truncating bmap (ino=16) [ 140.882522][ T5541] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 140.892640][ T5541] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 140.902495][ T5541] NILFS (loop0): error -5 truncating bmap (ino=16) [ 140.918719][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./254/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./254/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./254/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./254/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./254/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./254/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./254") = 0 mkdir("./255", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5543 ./strace-static-x86_64: Process 5543 attached [pid 5543] set_robust_list(0x555556375660, 24) = 0 [pid 5543] chdir("./255") = 0 [pid 5543] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5543] setpgid(0, 0) = 0 [pid 5543] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5543] write(3, "1000", 4) = 4 [pid 5543] close(3) = 0 [pid 5543] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5543] memfd_create("syzkaller", 0) = 3 [pid 5543] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 140.925941][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 140.934397][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 140.943862][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 140.953052][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 140.962513][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5543] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5543] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5543] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5543] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5543] close(3) = 0 [pid 5543] mkdir("./file0", 0777) = 0 [pid 5543] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5543] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5543] chdir("./file0") = 0 [pid 5543] ioctl(4, LOOP_CLR_FD) = 0 [pid 5543] close(4) = 0 [ 141.024740][ T5543] loop0: detected capacity change from 0 to 2048 [ 141.040835][ T5544] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 141.055503][ T5543] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 141.065938][ T5543] Remounting filesystem read-only [pid 5543] creat("./file2", 040) = 4 [pid 5543] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5543] exit_group(0) = ? [pid 5543] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5543, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./255", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./255", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./255/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./255/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./255/binderfs") = 0 [ 141.071128][ T5543] NILFS (loop0): error -5 truncating bmap (ino=16) [ 141.079115][ T5543] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 141.089643][ T5543] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 141.099218][ T5543] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./255/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./255/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./255/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./255/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./255/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./255/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./255") = 0 mkdir("./256", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5545 ./strace-static-x86_64: Process 5545 attached [pid 5545] set_robust_list(0x555556375660, 24) = 0 [pid 5545] chdir("./256") = 0 [pid 5545] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5545] setpgid(0, 0) = 0 [pid 5545] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5545] write(3, "1000", 4) = 4 [pid 5545] close(3) = 0 [pid 5545] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5545] memfd_create("syzkaller", 0) = 3 [pid 5545] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 141.118859][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 141.126543][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 141.134441][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 141.143521][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 141.153585][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 141.163311][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5545] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5545] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5545] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5545] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5545] close(3) = 0 [pid 5545] mkdir("./file0", 0777) = 0 [pid 5545] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5545] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5545] chdir("./file0") = 0 [pid 5545] ioctl(4, LOOP_CLR_FD) = 0 [pid 5545] close(4) = 0 [ 141.228613][ T5545] loop0: detected capacity change from 0 to 2048 [ 141.245289][ T5546] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 141.256942][ T5545] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 141.268182][ T5545] Remounting filesystem read-only [pid 5545] creat("./file2", 040) = 4 [pid 5545] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5545] exit_group(0) = ? [pid 5545] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5545, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./256", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./256", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./256/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./256/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./256/binderfs") = 0 [ 141.274049][ T5545] NILFS (loop0): error -5 truncating bmap (ino=16) [ 141.283537][ T5545] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 141.294557][ T5545] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 141.304205][ T5545] NILFS (loop0): error -5 truncating bmap (ino=16) [ 141.319612][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./256/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./256/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./256/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./256/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./256/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./256/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./256") = 0 mkdir("./257", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5547 ./strace-static-x86_64: Process 5547 attached [pid 5547] set_robust_list(0x555556375660, 24) = 0 [pid 5547] chdir("./257") = 0 [pid 5547] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5547] setpgid(0, 0) = 0 [pid 5547] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5547] write(3, "1000", 4) = 4 [pid 5547] close(3) = 0 [pid 5547] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5547] memfd_create("syzkaller", 0) = 3 [pid 5547] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 141.327134][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 141.335222][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 141.344198][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 141.354057][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 141.363791][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5547] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5547] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5547] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5547] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5547] close(3) = 0 [pid 5547] mkdir("./file0", 0777) = 0 [pid 5547] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5547] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5547] chdir("./file0") = 0 [pid 5547] ioctl(4, LOOP_CLR_FD) = 0 [pid 5547] close(4) = 0 [ 141.434157][ T5547] loop0: detected capacity change from 0 to 2048 [ 141.450436][ T5548] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 141.462402][ T5547] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 141.473160][ T5547] Remounting filesystem read-only [pid 5547] creat("./file2", 040) = 4 [pid 5547] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5547] exit_group(0) = ? [pid 5547] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5547, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./257", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./257", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./257/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./257/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./257/binderfs") = 0 [ 141.478886][ T5547] NILFS (loop0): error -5 truncating bmap (ino=16) [ 141.488130][ T5547] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 141.499169][ T5547] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 141.508993][ T5547] NILFS (loop0): error -5 truncating bmap (ino=16) [ 141.525775][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./257/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./257/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./257/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./257/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./257/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./257/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./257") = 0 mkdir("./258", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 141.533501][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 141.540806][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 141.550631][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 141.559799][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 141.568980][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5549 ./strace-static-x86_64: Process 5549 attached [pid 5549] set_robust_list(0x555556375660, 24) = 0 [pid 5549] chdir("./258") = 0 [pid 5549] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5549] setpgid(0, 0) = 0 [pid 5549] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5549] write(3, "1000", 4) = 4 [pid 5549] close(3) = 0 [pid 5549] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5549] memfd_create("syzkaller", 0) = 3 [pid 5549] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5549] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5549] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5549] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5549] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5549] close(3) = 0 [pid 5549] mkdir("./file0", 0777) = 0 [pid 5549] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5549] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5549] chdir("./file0") = 0 [pid 5549] ioctl(4, LOOP_CLR_FD) = 0 [pid 5549] close(4) = 0 [ 141.643689][ T5549] loop0: detected capacity change from 0 to 2048 [ 141.660305][ T5550] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 141.683923][ T5549] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5549] creat("./file2", 040) = 4 [pid 5549] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5549] exit_group(0) = ? [pid 5549] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5549, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./258", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./258", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./258/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./258/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./258/binderfs") = 0 [ 141.694266][ T5549] Remounting filesystem read-only [ 141.699464][ T5549] NILFS (loop0): error -5 truncating bmap (ino=16) [ 141.707374][ T5549] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 141.718483][ T5549] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 141.728532][ T5549] NILFS (loop0): error -5 truncating bmap (ino=16) [ 141.748695][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 141.755804][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 141.763368][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 141.772344][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 141.781519][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./258/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./258/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./258/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./258/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./258/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./258/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./258") = 0 mkdir("./259", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5551 ./strace-static-x86_64: Process 5551 attached [pid 5551] set_robust_list(0x555556375660, 24) = 0 [pid 5551] chdir("./259") = 0 [pid 5551] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5551] setpgid(0, 0) = 0 [pid 5551] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5551] write(3, "1000", 4) = 4 [pid 5551] close(3) = 0 [pid 5551] symlink("/dev/binderfs", "./binderfs") = 0 [ 141.790648][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5551] memfd_create("syzkaller", 0) = 3 [pid 5551] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5551] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5551] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5551] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5551] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5551] close(3) = 0 [pid 5551] mkdir("./file0", 0777) = 0 [pid 5551] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5551] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5551] chdir("./file0") = 0 [pid 5551] ioctl(4, LOOP_CLR_FD) = 0 [pid 5551] close(4) = 0 [ 141.862706][ T5551] loop0: detected capacity change from 0 to 2048 [ 141.879736][ T5552] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 141.895056][ T5551] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 141.906467][ T5551] Remounting filesystem read-only [pid 5551] creat("./file2", 040) = 4 [pid 5551] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5551] exit_group(0) = ? [pid 5551] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5551, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./259", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./259", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./259/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./259/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./259/binderfs") = 0 [ 141.911691][ T5551] NILFS (loop0): error -5 truncating bmap (ino=16) [ 141.920865][ T5551] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 141.932554][ T5551] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 141.942617][ T5551] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./259/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./259/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./259/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./259/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./259/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./259/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./259") = 0 mkdir("./260", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5553 ./strace-static-x86_64: Process 5553 attached [pid 5553] set_robust_list(0x555556375660, 24) = 0 [pid 5553] chdir("./260") = 0 [pid 5553] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5553] setpgid(0, 0) = 0 [ 141.960278][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 141.967716][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 141.975148][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 141.984556][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 141.994028][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 142.003536][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5553] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5553] write(3, "1000", 4) = 4 [pid 5553] close(3) = 0 [pid 5553] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5553] memfd_create("syzkaller", 0) = 3 [pid 5553] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5553] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5553] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5553] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5553] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5553] close(3) = 0 [pid 5553] mkdir("./file0", 0777) = 0 [pid 5553] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5553] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5553] chdir("./file0") = 0 [pid 5553] ioctl(4, LOOP_CLR_FD) = 0 [pid 5553] close(4) = 0 [ 142.070668][ T5553] loop0: detected capacity change from 0 to 2048 [ 142.088896][ T5554] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 142.100880][ T5553] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 142.112961][ T5553] Remounting filesystem read-only [pid 5553] creat("./file2", 040) = 4 [pid 5553] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5553] exit_group(0) = ? [pid 5553] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5553, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./260", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./260", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./260/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./260/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./260/binderfs") = 0 [ 142.122104][ T5553] NILFS (loop0): error -5 truncating bmap (ino=16) [ 142.130832][ T5553] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 142.141265][ T5553] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 142.150710][ T5553] NILFS (loop0): error -5 truncating bmap (ino=16) [ 142.170822][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 142.178104][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 142.185561][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 142.195147][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 142.205504][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./260/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./260/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./260/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./260/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./260/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./260/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./260") = 0 mkdir("./261", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5555 ./strace-static-x86_64: Process 5555 attached [pid 5555] set_robust_list(0x555556375660, 24) = 0 [pid 5555] chdir("./261") = 0 [pid 5555] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5555] setpgid(0, 0) = 0 [pid 5555] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5555] write(3, "1000", 4) = 4 [pid 5555] close(3) = 0 [pid 5555] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5555] memfd_create("syzkaller", 0) = 3 [ 142.215513][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5555] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5555] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5555] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5555] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5555] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5555] close(3) = 0 [pid 5555] mkdir("./file0", 0777) = 0 [pid 5555] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5555] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5555] chdir("./file0") = 0 [pid 5555] ioctl(4, LOOP_CLR_FD) = 0 [pid 5555] close(4) = 0 [pid 5555] creat("./file2", 040) = 4 [ 142.286550][ T5555] loop0: detected capacity change from 0 to 2048 [ 142.303218][ T5556] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 142.312764][ T5555] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 142.324460][ T5555] Remounting filesystem read-only [ 142.330210][ T5555] NILFS (loop0): error -5 truncating bmap (ino=16) [pid 5555] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5555] exit_group(0) = ? [pid 5555] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5555, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./261", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./261", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./261/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./261/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./261/binderfs") = 0 [ 142.338304][ T5555] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 142.348929][ T5555] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 142.358887][ T5555] NILFS (loop0): error -5 truncating bmap (ino=16) [ 142.373821][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./261/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./261/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./261/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./261/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./261/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./261/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./261") = 0 mkdir("./262", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5557 ./strace-static-x86_64: Process 5557 attached [pid 5557] set_robust_list(0x555556375660, 24) = 0 [pid 5557] chdir("./262") = 0 [pid 5557] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5557] setpgid(0, 0) = 0 [pid 5557] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5557] write(3, "1000", 4) = 4 [pid 5557] close(3) = 0 [pid 5557] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5557] memfd_create("syzkaller", 0) = 3 [pid 5557] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 142.381027][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 142.389237][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 142.399799][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 142.409408][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 142.419648][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5557] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5557] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5557] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5557] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5557] close(3) = 0 [pid 5557] mkdir("./file0", 0777) = 0 [pid 5557] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5557] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5557] chdir("./file0") = 0 [pid 5557] ioctl(4, LOOP_CLR_FD) = 0 [pid 5557] close(4) = 0 [ 142.480447][ T5557] loop0: detected capacity change from 0 to 2048 [ 142.500307][ T5558] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 142.514663][ T5557] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5557] creat("./file2", 040) = 4 [pid 5557] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5557] exit_group(0) = ? [pid 5557] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5557, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./262", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./262", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./262/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./262/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./262/binderfs") = 0 [ 142.525455][ T5557] Remounting filesystem read-only [ 142.532058][ T5557] NILFS (loop0): error -5 truncating bmap (ino=16) [ 142.540970][ T5557] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 142.551104][ T5557] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 142.560640][ T5557] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./262/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./262/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./262/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./262/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./262/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./262/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./262") = 0 mkdir("./263", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 142.577179][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 142.584346][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 142.592100][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 142.602212][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 142.611195][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 142.620753][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5559 ./strace-static-x86_64: Process 5559 attached [pid 5559] set_robust_list(0x555556375660, 24) = 0 [pid 5559] chdir("./263") = 0 [pid 5559] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5559] setpgid(0, 0) = 0 [pid 5559] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5559] write(3, "1000", 4) = 4 [pid 5559] close(3) = 0 [pid 5559] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5559] memfd_create("syzkaller", 0) = 3 [pid 5559] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5559] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5559] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5559] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5559] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5559] close(3) = 0 [pid 5559] mkdir("./file0", 0777) = 0 [pid 5559] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5559] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5559] chdir("./file0") = 0 [pid 5559] ioctl(4, LOOP_CLR_FD) = 0 [pid 5559] close(4) = 0 [ 142.706567][ T5559] loop0: detected capacity change from 0 to 2048 [ 142.723060][ T5560] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 142.746563][ T5559] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5559] creat("./file2", 040) = 4 [pid 5559] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5559] exit_group(0) = ? [pid 5559] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5559, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./263", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./263", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./263/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./263/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./263/binderfs") = 0 [ 142.756515][ T5559] Remounting filesystem read-only [ 142.761910][ T5559] NILFS (loop0): error -5 truncating bmap (ino=16) [ 142.769834][ T5559] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 142.780043][ T5559] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 142.789512][ T5559] NILFS (loop0): error -5 truncating bmap (ino=16) [ 142.805285][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 142.812792][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 142.820130][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 142.830053][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 142.839226][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 142.848514][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer umount2("./263/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./263/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./263/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./263/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./263/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./263/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./263") = 0 mkdir("./264", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5561 ./strace-static-x86_64: Process 5561 attached [pid 5561] set_robust_list(0x555556375660, 24) = 0 [pid 5561] chdir("./264") = 0 [pid 5561] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5561] setpgid(0, 0) = 0 [pid 5561] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5561] write(3, "1000", 4) = 4 [pid 5561] close(3) = 0 [pid 5561] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5561] memfd_create("syzkaller", 0) = 3 [pid 5561] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5561] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5561] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5561] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5561] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5561] close(3) = 0 [pid 5561] mkdir("./file0", 0777) = 0 [pid 5561] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5561] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5561] chdir("./file0") = 0 [pid 5561] ioctl(4, LOOP_CLR_FD) = 0 [pid 5561] close(4) = 0 [ 142.907634][ T5561] loop0: detected capacity change from 0 to 2048 [ 142.924397][ T5562] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5561] creat("./file2", 040) = 4 [pid 5561] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5561] exit_group(0) = ? [pid 5561] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5561, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./264", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./264", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./264/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./264/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./264/binderfs") = 0 [ 142.955295][ T5561] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 142.966730][ T5561] Remounting filesystem read-only [ 142.972393][ T5561] NILFS (loop0): error -5 truncating bmap (ino=16) [ 142.980538][ T5561] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 142.990793][ T5561] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 143.000763][ T5561] NILFS (loop0): error -5 truncating bmap (ino=16) [ 143.023138][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 143.030762][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 143.038444][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 143.047565][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 143.056825][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./264/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./264/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./264/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./264/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./264/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./264/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./264") = 0 mkdir("./265", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5563 ./strace-static-x86_64: Process 5563 attached [pid 5563] set_robust_list(0x555556375660, 24) = 0 [pid 5563] chdir("./265") = 0 [pid 5563] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5563] setpgid(0, 0) = 0 [pid 5563] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5563] write(3, "1000", 4) = 4 [pid 5563] close(3) = 0 [pid 5563] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5563] memfd_create("syzkaller", 0) = 3 [pid 5563] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 143.066189][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5563] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5563] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5563] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5563] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5563] close(3) = 0 [pid 5563] mkdir("./file0", 0777) = 0 [pid 5563] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5563] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5563] chdir("./file0") = 0 [pid 5563] ioctl(4, LOOP_CLR_FD) = 0 [pid 5563] close(4) = 0 [ 143.149776][ T5563] loop0: detected capacity change from 0 to 2048 [ 143.165545][ T5564] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 143.183900][ T5563] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 143.194522][ T5563] Remounting filesystem read-only [pid 5563] creat("./file2", 040) = 4 [pid 5563] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5563] exit_group(0) = ? [pid 5563] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5563, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./265", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./265", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./265/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./265/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./265/binderfs") = 0 [ 143.201133][ T5563] NILFS (loop0): error -5 truncating bmap (ino=16) [ 143.212801][ T5563] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 143.224387][ T5563] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 143.233654][ T5563] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./265/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./265/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./265/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./265/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./265/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./265/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./265") = 0 mkdir("./266", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5565 ./strace-static-x86_64: Process 5565 attached [pid 5565] set_robust_list(0x555556375660, 24) = 0 [pid 5565] chdir("./266") = 0 [pid 5565] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5565] setpgid(0, 0) = 0 [pid 5565] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5565] write(3, "1000", 4) = 4 [pid 5565] close(3) = 0 [pid 5565] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5565] memfd_create("syzkaller", 0) = 3 [pid 5565] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 143.249140][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 143.256439][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 143.263948][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 143.273064][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 143.282009][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 143.291169][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5565] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5565] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5565] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5565] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5565] close(3) = 0 [pid 5565] mkdir("./file0", 0777) = 0 [pid 5565] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5565] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5565] chdir("./file0") = 0 [pid 5565] ioctl(4, LOOP_CLR_FD) = 0 [pid 5565] close(4) = 0 [ 143.352662][ T5565] loop0: detected capacity change from 0 to 2048 [ 143.371267][ T5566] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 143.387626][ T5565] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5565] creat("./file2", 040) = 4 [pid 5565] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5565] exit_group(0) = ? [pid 5565] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5565, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./266", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./266", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./266/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./266/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./266/binderfs") = 0 [ 143.398179][ T5565] Remounting filesystem read-only [ 143.404219][ T5565] NILFS (loop0): error -5 truncating bmap (ino=16) [ 143.415520][ T5565] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 143.432634][ T5565] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 143.442469][ T5565] NILFS (loop0): error -5 truncating bmap (ino=16) [ 143.462285][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 143.469348][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 143.477043][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 143.486838][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 143.496096][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./266/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./266/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./266/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./266/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./266/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./266/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./266") = 0 mkdir("./267", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5567 ./strace-static-x86_64: Process 5567 attached [pid 5567] set_robust_list(0x555556375660, 24) = 0 [pid 5567] chdir("./267") = 0 [pid 5567] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5567] setpgid(0, 0) = 0 [pid 5567] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5567] write(3, "1000", 4) = 4 [pid 5567] close(3) = 0 [ 143.505414][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5567] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5567] memfd_create("syzkaller", 0) = 3 [pid 5567] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5567] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5567] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5567] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5567] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5567] close(3) = 0 [pid 5567] mkdir("./file0", 0777) = 0 [pid 5567] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5567] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5567] chdir("./file0") = 0 [pid 5567] ioctl(4, LOOP_CLR_FD) = 0 [pid 5567] close(4) = 0 [ 143.582025][ T5567] loop0: detected capacity change from 0 to 2048 [ 143.598556][ T5568] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 143.613009][ T5567] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 143.624318][ T5567] Remounting filesystem read-only [pid 5567] creat("./file2", 040) = 4 [pid 5567] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5567] exit_group(0) = ? [pid 5567] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5567, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./267", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./267", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./267/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./267/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./267/binderfs") = 0 [ 143.629491][ T5567] NILFS (loop0): error -5 truncating bmap (ino=16) [ 143.638682][ T5567] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 143.649216][ T5567] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 143.658961][ T5567] NILFS (loop0): error -5 truncating bmap (ino=16) [ 143.674537][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./267/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./267/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./267/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./267/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./267/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./267/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./267") = 0 mkdir("./268", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5569 attached [pid 5569] set_robust_list(0x555556375660, 24) = 0 [pid 5569] chdir("./268" [pid 5024] <... clone resumed>, child_tidptr=0x555556375650) = 5569 [pid 5569] <... chdir resumed>) = 0 [pid 5569] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5569] setpgid(0, 0) = 0 [pid 5569] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5569] write(3, "1000", 4) = 4 [pid 5569] close(3) = 0 [ 143.682665][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 143.689972][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 143.698981][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 143.708011][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 143.718047][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5569] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5569] memfd_create("syzkaller", 0) = 3 [pid 5569] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5569] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5569] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5569] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5569] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5569] close(3) = 0 [pid 5569] mkdir("./file0", 0777) = 0 [pid 5569] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5569] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5569] chdir("./file0") = 0 [pid 5569] ioctl(4, LOOP_CLR_FD) = 0 [pid 5569] close(4) = 0 [ 143.785830][ T5569] loop0: detected capacity change from 0 to 2048 [ 143.801758][ T5570] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 143.823581][ T5569] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5569] creat("./file2", 040) = 4 [pid 5569] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5569] exit_group(0) = ? [pid 5569] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5569, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./268", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./268", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./268/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./268/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./268/binderfs") = 0 [ 143.835307][ T5569] Remounting filesystem read-only [ 143.840859][ T5569] NILFS (loop0): error -5 truncating bmap (ino=16) [ 143.850409][ T5569] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 143.860460][ T5569] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 143.870316][ T5569] NILFS (loop0): error -5 truncating bmap (ino=16) [ 143.891077][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 143.898184][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 143.906125][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 143.915358][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 143.924724][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./268/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./268/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./268/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./268/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./268/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./268/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./268") = 0 mkdir("./269", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5571 ./strace-static-x86_64: Process 5571 attached [pid 5571] set_robust_list(0x555556375660, 24) = 0 [pid 5571] chdir("./269") = 0 [pid 5571] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5571] setpgid(0, 0) = 0 [pid 5571] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5571] write(3, "1000", 4) = 4 [pid 5571] close(3) = 0 [pid 5571] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5571] memfd_create("syzkaller", 0) = 3 [pid 5571] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 143.933988][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5571] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5571] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5571] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5571] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5571] close(3) = 0 [pid 5571] mkdir("./file0", 0777) = 0 [pid 5571] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5571] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5571] chdir("./file0") = 0 [pid 5571] ioctl(4, LOOP_CLR_FD) = 0 [pid 5571] close(4) = 0 [ 144.004102][ T5571] loop0: detected capacity change from 0 to 2048 [ 144.020068][ T5572] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 144.045207][ T5571] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5571] creat("./file2", 040) = 4 [pid 5571] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5571] exit_group(0) = ? [pid 5571] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5571, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./269", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./269", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./269/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./269/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./269/binderfs") = 0 [ 144.055420][ T5571] Remounting filesystem read-only [ 144.060750][ T5571] NILFS (loop0): error -5 truncating bmap (ino=16) [ 144.069346][ T5571] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 144.079416][ T5571] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 144.089176][ T5571] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./269/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./269/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./269/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./269/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./269/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./269/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./269") = 0 mkdir("./270", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 144.104253][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 144.111288][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 144.119867][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 144.128836][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 144.137814][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 144.147053][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5573 ./strace-static-x86_64: Process 5573 attached [pid 5573] set_robust_list(0x555556375660, 24) = 0 [pid 5573] chdir("./270") = 0 [pid 5573] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5573] setpgid(0, 0) = 0 [pid 5573] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5573] write(3, "1000", 4) = 4 [pid 5573] close(3) = 0 [pid 5573] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5573] memfd_create("syzkaller", 0) = 3 [pid 5573] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5573] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5573] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5573] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5573] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5573] close(3) = 0 [pid 5573] mkdir("./file0", 0777) = 0 [pid 5573] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5573] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5573] chdir("./file0") = 0 [pid 5573] ioctl(4, LOOP_CLR_FD) = 0 [pid 5573] close(4) = 0 [ 144.225787][ T5573] loop0: detected capacity change from 0 to 2048 [ 144.241044][ T5574] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 144.264343][ T5573] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5573] creat("./file2", 040) = 4 [pid 5573] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5573] exit_group(0) = ? [pid 5573] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5573, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- umount2("./270", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./270", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./270/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./270/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./270/binderfs") = 0 [ 144.275209][ T5573] Remounting filesystem read-only [ 144.280772][ T5573] NILFS (loop0): error -5 truncating bmap (ino=16) [ 144.292483][ T5573] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 144.302699][ T5573] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 144.312476][ T5573] NILFS (loop0): error -5 truncating bmap (ino=16) [ 144.332679][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 144.339665][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 144.347809][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 144.356983][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 144.366048][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./270/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./270/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./270/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./270/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./270/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./270/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./270") = 0 [ 144.375208][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer mkdir("./271", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5575 ./strace-static-x86_64: Process 5575 attached [pid 5575] set_robust_list(0x555556375660, 24) = 0 [pid 5575] chdir("./271") = 0 [pid 5575] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5575] setpgid(0, 0) = 0 [pid 5575] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5575] write(3, "1000", 4) = 4 [pid 5575] close(3) = 0 [pid 5575] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5575] memfd_create("syzkaller", 0) = 3 [pid 5575] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5575] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5575] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5575] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5575] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5575] close(3) = 0 [pid 5575] mkdir("./file0", 0777) = 0 [pid 5575] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5575] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5575] chdir("./file0") = 0 [pid 5575] ioctl(4, LOOP_CLR_FD) = 0 [pid 5575] close(4) = 0 [ 144.463669][ T5575] loop0: detected capacity change from 0 to 2048 [ 144.478531][ T5576] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 144.504645][ T5575] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5575] creat("./file2", 040) = 4 [pid 5575] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5575] exit_group(0) = ? [pid 5575] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5575, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./271", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./271", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./271/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./271/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./271/binderfs") = 0 [ 144.515087][ T5575] Remounting filesystem read-only [ 144.520686][ T5575] NILFS (loop0): error -5 truncating bmap (ino=16) [ 144.528515][ T5575] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 144.538651][ T5575] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 144.548352][ T5575] NILFS (loop0): error -5 truncating bmap (ino=16) [ 144.566841][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 144.573925][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 144.581234][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 144.590545][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 144.599678][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./271/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./271/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./271/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./271/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./271/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./271/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./271") = 0 mkdir("./272", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5577 ./strace-static-x86_64: Process 5577 attached [pid 5577] set_robust_list(0x555556375660, 24) = 0 [pid 5577] chdir("./272") = 0 [pid 5577] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5577] setpgid(0, 0) = 0 [pid 5577] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5577] write(3, "1000", 4) = 4 [pid 5577] close(3) = 0 [ 144.608882][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5577] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5577] memfd_create("syzkaller", 0) = 3 [pid 5577] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5577] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5577] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5577] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5577] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5577] close(3) = 0 [pid 5577] mkdir("./file0", 0777) = 0 [pid 5577] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5577] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5577] chdir("./file0") = 0 [pid 5577] ioctl(4, LOOP_CLR_FD) = 0 [pid 5577] close(4) = 0 [ 144.681947][ T5577] loop0: detected capacity change from 0 to 2048 [ 144.698251][ T5578] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5577] creat("./file2", 040) = 4 [pid 5577] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5577] exit_group(0) = ? [pid 5577] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5577, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./272", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./272", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./272/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./272/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./272/binderfs") = 0 [ 144.733987][ T5577] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 144.744252][ T5577] Remounting filesystem read-only [ 144.749347][ T5577] NILFS (loop0): error -5 truncating bmap (ino=16) [ 144.757932][ T5577] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 144.768013][ T5577] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 144.777503][ T5577] NILFS (loop0): error -5 truncating bmap (ino=16) [ 144.796977][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 144.804291][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 144.812079][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 144.821145][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 144.830144][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./272/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./272/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./272/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./272/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./272/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./272/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./272") = 0 mkdir("./273", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5579 ./strace-static-x86_64: Process 5579 attached [pid 5579] set_robust_list(0x555556375660, 24) = 0 [pid 5579] chdir("./273") = 0 [pid 5579] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5579] setpgid(0, 0) = 0 [pid 5579] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5579] write(3, "1000", 4) = 4 [pid 5579] close(3) = 0 [pid 5579] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5579] memfd_create("syzkaller", 0) = 3 [pid 5579] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 144.839314][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5579] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5579] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5579] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5579] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5579] close(3) = 0 [pid 5579] mkdir("./file0", 0777) = 0 [pid 5579] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5579] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5579] chdir("./file0") = 0 [pid 5579] ioctl(4, LOOP_CLR_FD) = 0 [pid 5579] close(4) = 0 [ 144.905150][ T5579] loop0: detected capacity change from 0 to 2048 [ 144.921319][ T5580] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5579] creat("./file2", 040) = 4 [pid 5579] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5579] exit_group(0) = ? [pid 5579] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5579, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./273", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./273", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./273/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./273/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./273/binderfs") = 0 [ 144.946635][ T5579] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 144.957142][ T5579] Remounting filesystem read-only [ 144.962685][ T5579] NILFS (loop0): error -5 truncating bmap (ino=16) [ 144.970413][ T5579] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 144.980539][ T5579] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 144.989930][ T5579] NILFS (loop0): error -5 truncating bmap (ino=16) [ 145.006251][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 145.013356][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 145.020712][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 145.029753][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 145.038713][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 145.047930][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer umount2("./273/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./273/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./273/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./273/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./273/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./273/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./273") = 0 mkdir("./274", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5581 ./strace-static-x86_64: Process 5581 attached [pid 5581] set_robust_list(0x555556375660, 24) = 0 [pid 5581] chdir("./274") = 0 [pid 5581] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5581] setpgid(0, 0) = 0 [pid 5581] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5581] write(3, "1000", 4) = 4 [pid 5581] close(3) = 0 [pid 5581] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5581] memfd_create("syzkaller", 0) = 3 [pid 5581] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5581] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5581] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5581] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5581] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5581] close(3) = 0 [pid 5581] mkdir("./file0", 0777) = 0 [pid 5581] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5581] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5581] chdir("./file0") = 0 [pid 5581] ioctl(4, LOOP_CLR_FD) = 0 [pid 5581] close(4) = 0 [ 145.120577][ T5581] loop0: detected capacity change from 0 to 2048 [ 145.136946][ T5582] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5581] creat("./file2", 040) = 4 [pid 5581] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5581] exit_group(0) = ? [pid 5581] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5581, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./274", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./274", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./274/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./274/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./274/binderfs") = 0 [ 145.164419][ T5581] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 145.178733][ T5581] Remounting filesystem read-only [ 145.184411][ T5581] NILFS (loop0): error -5 truncating bmap (ino=16) [ 145.192343][ T5581] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 145.202298][ T5581] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 145.211556][ T5581] NILFS (loop0): error -5 truncating bmap (ino=16) [ 145.232555][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 145.239631][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 145.247040][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 145.256060][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 145.265007][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./274/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./274/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./274/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./274/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./274/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./274/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./274") = 0 mkdir("./275", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5583 ./strace-static-x86_64: Process 5583 attached [pid 5583] set_robust_list(0x555556375660, 24) = 0 [pid 5583] chdir("./275") = 0 [pid 5583] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5583] setpgid(0, 0) = 0 [ 145.274255][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5583] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5583] write(3, "1000", 4) = 4 [pid 5583] close(3) = 0 [pid 5583] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5583] memfd_create("syzkaller", 0) = 3 [pid 5583] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5583] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5583] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5583] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5583] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5583] close(3) = 0 [pid 5583] mkdir("./file0", 0777) = 0 [pid 5583] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5583] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5583] chdir("./file0") = 0 [pid 5583] ioctl(4, LOOP_CLR_FD) = 0 [pid 5583] close(4) = 0 [pid 5583] creat("./file2", 040) = 4 [ 145.354876][ T5583] loop0: detected capacity change from 0 to 2048 [ 145.369755][ T5584] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 145.382113][ T5583] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 145.392633][ T5583] Remounting filesystem read-only [ 145.397716][ T5583] NILFS (loop0): error -5 truncating bmap (ino=16) [pid 5583] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5583] exit_group(0) = ? [pid 5583] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5583, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./275", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./275", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./275/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./275/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./275/binderfs") = 0 [ 145.405727][ T5583] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 145.415822][ T5583] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 145.425378][ T5583] NILFS (loop0): error -5 truncating bmap (ino=16) [ 145.439864][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 145.447024][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 umount2("./275/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./275/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./275/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./275/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./275/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./275/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./275") = 0 mkdir("./276", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5585 ./strace-static-x86_64: Process 5585 attached [pid 5585] set_robust_list(0x555556375660, 24) = 0 [pid 5585] chdir("./276") = 0 [pid 5585] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5585] setpgid(0, 0) = 0 [pid 5585] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5585] write(3, "1000", 4) = 4 [pid 5585] close(3) = 0 [pid 5585] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5585] memfd_create("syzkaller", 0) = 3 [pid 5585] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 145.454456][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 145.463418][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 145.472380][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 145.481607][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5585] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5585] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5585] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5585] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5585] close(3) = 0 [pid 5585] mkdir("./file0", 0777) = 0 [pid 5585] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5585] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5585] chdir("./file0") = 0 [pid 5585] ioctl(4, LOOP_CLR_FD) = 0 [pid 5585] close(4) = 0 [ 145.541342][ T5585] loop0: detected capacity change from 0 to 2048 [ 145.559158][ T5586] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 145.576608][ T5585] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5585] creat("./file2", 040) = 4 [pid 5585] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5585] exit_group(0) = ? [pid 5585] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5585, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- umount2("./276", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./276", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./276/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./276/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./276/binderfs") = 0 [ 145.586888][ T5585] Remounting filesystem read-only [ 145.593149][ T5585] NILFS (loop0): error -5 truncating bmap (ino=16) [ 145.601870][ T5585] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 145.612066][ T5585] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 145.621933][ T5585] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./276/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./276/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./276/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./276/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./276/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./276/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./276") = 0 mkdir("./277", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5587 ./strace-static-x86_64: Process 5587 attached [pid 5587] set_robust_list(0x555556375660, 24) = 0 [pid 5587] chdir("./277") = 0 [pid 5587] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5587] setpgid(0, 0) = 0 [pid 5587] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5587] write(3, "1000", 4) = 4 [pid 5587] close(3) = 0 [pid 5587] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5587] memfd_create("syzkaller", 0) = 3 [ 145.638058][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 145.645100][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 145.652803][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 145.661876][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 145.670741][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 145.680144][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5587] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5587] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5587] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5587] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5587] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5587] close(3) = 0 [pid 5587] mkdir("./file0", 0777) = 0 [pid 5587] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5587] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5587] chdir("./file0") = 0 [pid 5587] ioctl(4, LOOP_CLR_FD) = 0 [pid 5587] close(4) = 0 [ 145.742026][ T5587] loop0: detected capacity change from 0 to 2048 [ 145.759473][ T5588] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 145.782716][ T5587] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5587] creat("./file2", 040) = 4 [pid 5587] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5587] exit_group(0) = ? [pid 5587] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5587, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./277", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./277", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./277/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./277/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./277/binderfs") = 0 [ 145.793578][ T5587] Remounting filesystem read-only [ 145.799075][ T5587] NILFS (loop0): error -5 truncating bmap (ino=16) [ 145.812275][ T5587] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 145.823262][ T5587] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 145.833034][ T5587] NILFS (loop0): error -5 truncating bmap (ino=16) [ 145.849727][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 145.856777][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 145.864417][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 145.873455][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 145.882842][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./277/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./277/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./277/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./277/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./277/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./277/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./277") = 0 mkdir("./278", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5589 ./strace-static-x86_64: Process 5589 attached [pid 5589] set_robust_list(0x555556375660, 24) = 0 [pid 5589] chdir("./278") = 0 [pid 5589] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5589] setpgid(0, 0) = 0 [pid 5589] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5589] write(3, "1000", 4) = 4 [pid 5589] close(3) = 0 [pid 5589] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5589] memfd_create("syzkaller", 0) = 3 [pid 5589] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 145.892094][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5589] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5589] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5589] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5589] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5589] close(3) = 0 [pid 5589] mkdir("./file0", 0777) = 0 [pid 5589] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5589] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5589] chdir("./file0") = 0 [pid 5589] ioctl(4, LOOP_CLR_FD) = 0 [pid 5589] close(4) = 0 [ 145.957365][ T5589] loop0: detected capacity change from 0 to 2048 [ 145.973192][ T5590] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 145.986812][ T5589] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 145.997579][ T5589] Remounting filesystem read-only [pid 5589] creat("./file2", 040) = 4 [pid 5589] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5589] exit_group(0) = ? [pid 5589] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5589, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./278", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./278", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./278/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./278/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./278/binderfs") = 0 [ 146.003897][ T5589] NILFS (loop0): error -5 truncating bmap (ino=16) [ 146.018277][ T5589] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 146.028393][ T5589] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 146.037662][ T5589] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./278/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./278/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./278/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./278/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./278/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./278/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./278") = 0 mkdir("./279", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5591 ./strace-static-x86_64: Process 5591 attached [pid 5591] set_robust_list(0x555556375660, 24) = 0 [pid 5591] chdir("./279") = 0 [pid 5591] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5591] setpgid(0, 0) = 0 [pid 5591] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5591] write(3, "1000", 4) = 4 [ 146.053050][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 146.060036][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 146.067655][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 146.076618][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 146.087907][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 146.097104][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5591] close(3) = 0 [pid 5591] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5591] memfd_create("syzkaller", 0) = 3 [pid 5591] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5591] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5591] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5591] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5591] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5591] close(3) = 0 [pid 5591] mkdir("./file0", 0777) = 0 [pid 5591] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5591] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5591] chdir("./file0") = 0 [pid 5591] ioctl(4, LOOP_CLR_FD) = 0 [pid 5591] close(4) = 0 [ 146.165163][ T5591] loop0: detected capacity change from 0 to 2048 [ 146.182275][ T5592] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 146.198595][ T5591] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5591] creat("./file2", 040) = 4 [pid 5591] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5591] exit_group(0) = ? [pid 5591] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5591, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./279", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./279", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./279/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./279/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./279/binderfs") = 0 [ 146.212083][ T5591] Remounting filesystem read-only [ 146.217667][ T5591] NILFS (loop0): error -5 truncating bmap (ino=16) [ 146.227286][ T5591] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 146.237227][ T5591] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 146.247142][ T5591] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./279/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./279/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./279/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./279/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./279/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./279/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./279") = 0 mkdir("./280", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 146.262046][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 146.269073][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 146.276835][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 146.286037][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 146.295015][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 146.304215][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5593 ./strace-static-x86_64: Process 5593 attached [pid 5593] set_robust_list(0x555556375660, 24) = 0 [pid 5593] chdir("./280") = 0 [pid 5593] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5593] setpgid(0, 0) = 0 [pid 5593] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5593] write(3, "1000", 4) = 4 [pid 5593] close(3) = 0 [pid 5593] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5593] memfd_create("syzkaller", 0) = 3 [pid 5593] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5593] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5593] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5593] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5593] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5593] close(3) = 0 [pid 5593] mkdir("./file0", 0777) = 0 [pid 5593] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5593] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5593] chdir("./file0") = 0 [pid 5593] ioctl(4, LOOP_CLR_FD) = 0 [pid 5593] close(4) = 0 [ 146.384068][ T5593] loop0: detected capacity change from 0 to 2048 [ 146.400431][ T5594] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 146.415725][ T5593] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 146.428365][ T5593] Remounting filesystem read-only [pid 5593] creat("./file2", 040) = 4 [pid 5593] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5593] exit_group(0) = ? [pid 5593] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5593, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./280", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./280", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./280/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./280/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./280/binderfs") = 0 [ 146.433943][ T5593] NILFS (loop0): error -5 truncating bmap (ino=16) [ 146.443428][ T5593] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 146.453231][ T5593] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 146.462798][ T5593] NILFS (loop0): error -5 truncating bmap (ino=16) [ 146.482220][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 146.489236][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 146.497183][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 146.506606][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 146.516639][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 146.525986][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer umount2("./280/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./280/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./280/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./280/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./280/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./280/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./280") = 0 mkdir("./281", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5595 ./strace-static-x86_64: Process 5595 attached [pid 5595] set_robust_list(0x555556375660, 24) = 0 [pid 5595] chdir("./281") = 0 [pid 5595] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5595] setpgid(0, 0) = 0 [pid 5595] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5595] write(3, "1000", 4) = 4 [pid 5595] close(3) = 0 [pid 5595] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5595] memfd_create("syzkaller", 0) = 3 [pid 5595] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5595] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5595] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5595] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5595] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5595] close(3) = 0 [pid 5595] mkdir("./file0", 0777) = 0 [pid 5595] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5595] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5595] chdir("./file0") = 0 [pid 5595] ioctl(4, LOOP_CLR_FD) = 0 [pid 5595] close(4) = 0 [ 146.613811][ T5595] loop0: detected capacity change from 0 to 2048 [ 146.629596][ T5596] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 146.654932][ T5595] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5595] creat("./file2", 040) = 4 [pid 5595] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5595] exit_group(0) = ? [pid 5595] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5595, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./281", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./281", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./281/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./281/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./281/binderfs") = 0 [ 146.667037][ T5595] Remounting filesystem read-only [ 146.673122][ T5595] NILFS (loop0): error -5 truncating bmap (ino=16) [ 146.680761][ T5595] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 146.690868][ T5595] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 146.700696][ T5595] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./281/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./281/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./281/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./281/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./281/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./281/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./281") = 0 mkdir("./282", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5597 ./strace-static-x86_64: Process 5597 attached [pid 5597] set_robust_list(0x555556375660, 24) = 0 [pid 5597] chdir("./282") = 0 [pid 5597] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5597] setpgid(0, 0) = 0 [ 146.715980][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 146.723030][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 146.730360][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 146.739403][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 146.748357][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 146.757710][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5597] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5597] write(3, "1000", 4) = 4 [pid 5597] close(3) = 0 [pid 5597] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5597] memfd_create("syzkaller", 0) = 3 [pid 5597] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5597] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5597] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5597] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5597] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5597] close(3) = 0 [pid 5597] mkdir("./file0", 0777) = 0 [pid 5597] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5597] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5597] chdir("./file0") = 0 [pid 5597] ioctl(4, LOOP_CLR_FD) = 0 [pid 5597] close(4) = 0 [ 146.819708][ T5597] loop0: detected capacity change from 0 to 2048 [ 146.835704][ T5598] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5597] creat("./file2", 040) = 4 [pid 5597] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5597] exit_group(0) = ? [pid 5597] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5597, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./282", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./282", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./282/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./282/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./282/binderfs") = 0 [ 146.863995][ T5597] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 146.875566][ T5597] Remounting filesystem read-only [ 146.881266][ T5597] NILFS (loop0): error -5 truncating bmap (ino=16) [ 146.890240][ T5597] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 146.901244][ T5597] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 146.910968][ T5597] NILFS (loop0): error -5 truncating bmap (ino=16) [ 146.928469][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 146.935970][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 146.943436][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 146.952573][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 146.961564][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./282/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./282/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./282/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./282/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./282/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./282/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./282") = 0 mkdir("./283", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5599 ./strace-static-x86_64: Process 5599 attached [pid 5599] set_robust_list(0x555556375660, 24) = 0 [pid 5599] chdir("./283") = 0 [ 146.970697][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5599] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5599] setpgid(0, 0) = 0 [pid 5599] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5599] write(3, "1000", 4) = 4 [pid 5599] close(3) = 0 [pid 5599] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5599] memfd_create("syzkaller", 0) = 3 [pid 5599] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5599] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5599] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5599] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5599] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5599] close(3) = 0 [pid 5599] mkdir("./file0", 0777) = 0 [pid 5599] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5599] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5599] chdir("./file0") = 0 [pid 5599] ioctl(4, LOOP_CLR_FD) = 0 [pid 5599] close(4) = 0 [ 147.045640][ T5599] loop0: detected capacity change from 0 to 2048 [ 147.061924][ T5600] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 147.083403][ T5599] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5599] creat("./file2", 040) = 4 [pid 5599] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5599] exit_group(0) = ? [pid 5599] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5599, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./283", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./283", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./283/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./283/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./283/binderfs") = 0 [ 147.093644][ T5599] Remounting filesystem read-only [ 147.098734][ T5599] NILFS (loop0): error -5 truncating bmap (ino=16) [ 147.107075][ T5599] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 147.117292][ T5599] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 147.127081][ T5599] NILFS (loop0): error -5 truncating bmap (ino=16) [ 147.148358][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 147.157237][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 147.164823][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 147.174038][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 147.182961][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./283/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./283/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./283/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./283/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./283/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./283/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./283") = 0 mkdir("./284", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 147.192604][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5601 ./strace-static-x86_64: Process 5601 attached [pid 5601] set_robust_list(0x555556375660, 24) = 0 [pid 5601] chdir("./284") = 0 [pid 5601] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5601] setpgid(0, 0) = 0 [pid 5601] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5601] write(3, "1000", 4) = 4 [pid 5601] close(3) = 0 [pid 5601] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5601] memfd_create("syzkaller", 0) = 3 [pid 5601] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5601] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5601] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5601] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5601] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5601] close(3) = 0 [pid 5601] mkdir("./file0", 0777) = 0 [pid 5601] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5601] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5601] chdir("./file0") = 0 [pid 5601] ioctl(4, LOOP_CLR_FD) = 0 [pid 5601] close(4) = 0 [ 147.269435][ T5601] loop0: detected capacity change from 0 to 2048 [ 147.286384][ T5602] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 147.305397][ T5601] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5601] creat("./file2", 040) = 4 [pid 5601] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5601] exit_group(0) = ? [pid 5601] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5601, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- umount2("./284", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./284", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./284/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./284/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./284/binderfs") = 0 [ 147.315934][ T5601] Remounting filesystem read-only [ 147.321493][ T5601] NILFS (loop0): error -5 truncating bmap (ino=16) [ 147.329312][ T5601] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 147.339624][ T5601] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 147.349650][ T5601] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./284/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./284/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./284/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./284/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./284/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./284/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./284") = 0 mkdir("./285", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5603 ./strace-static-x86_64: Process 5603 attached [pid 5603] set_robust_list(0x555556375660, 24) = 0 [pid 5603] chdir("./285") = 0 [pid 5603] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5603] setpgid(0, 0) = 0 [pid 5603] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5603] write(3, "1000", 4) = 4 [pid 5603] close(3) = 0 [pid 5603] symlink("/dev/binderfs", "./binderfs") = 0 [ 147.366630][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 147.373679][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 147.381041][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 147.390555][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 147.399609][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 147.408761][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5603] memfd_create("syzkaller", 0) = 3 [pid 5603] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5603] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5603] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5603] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5603] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5603] close(3) = 0 [pid 5603] mkdir("./file0", 0777) = 0 [pid 5603] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5603] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5603] chdir("./file0") = 0 [pid 5603] ioctl(4, LOOP_CLR_FD) = 0 [pid 5603] close(4) = 0 [ 147.471078][ T5603] loop0: detected capacity change from 0 to 2048 [ 147.488580][ T5604] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5603] creat("./file2", 040) = 4 [pid 5603] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5603] exit_group(0) = ? [pid 5603] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5603, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./285", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./285", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./285/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./285/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./285/binderfs") = 0 [ 147.513694][ T5603] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 147.524039][ T5603] Remounting filesystem read-only [ 147.529138][ T5603] NILFS (loop0): error -5 truncating bmap (ino=16) [ 147.538058][ T5603] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 147.548427][ T5603] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 147.558482][ T5603] NILFS (loop0): error -5 truncating bmap (ino=16) [ 147.574327][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 147.581621][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 147.588924][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 147.599201][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 147.608964][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./285/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./285/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./285/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./285/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./285/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./285/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./285") = 0 mkdir("./286", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5605 ./strace-static-x86_64: Process 5605 attached [pid 5605] set_robust_list(0x555556375660, 24) = 0 [pid 5605] chdir("./286") = 0 [pid 5605] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5605] setpgid(0, 0) = 0 [pid 5605] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5605] write(3, "1000", 4) = 4 [pid 5605] close(3) = 0 [pid 5605] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5605] memfd_create("syzkaller", 0) = 3 [pid 5605] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 147.618367][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5605] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5605] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5605] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5605] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5605] close(3) = 0 [pid 5605] mkdir("./file0", 0777) = 0 [pid 5605] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5605] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5605] chdir("./file0") = 0 [pid 5605] ioctl(4, LOOP_CLR_FD) = 0 [pid 5605] close(4) = 0 [ 147.688257][ T5605] loop0: detected capacity change from 0 to 2048 [ 147.704609][ T5606] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 147.718742][ T5605] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 147.729803][ T5605] Remounting filesystem read-only [pid 5605] creat("./file2", 040) = 4 [pid 5605] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5605] exit_group(0) = ? [pid 5605] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5605, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./286", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./286", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./286/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./286/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./286/binderfs") = 0 [ 147.735817][ T5605] NILFS (loop0): error -5 truncating bmap (ino=16) [ 147.743868][ T5605] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 147.754551][ T5605] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 147.763858][ T5605] NILFS (loop0): error -5 truncating bmap (ino=16) [ 147.780734][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./286/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./286/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./286/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./286/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./286/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./286/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./286") = 0 mkdir("./287", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 147.788499][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 147.796148][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 147.805640][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 147.814751][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 147.823887][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5607 ./strace-static-x86_64: Process 5607 attached [pid 5607] set_robust_list(0x555556375660, 24) = 0 [pid 5607] chdir("./287") = 0 [pid 5607] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5607] setpgid(0, 0) = 0 [pid 5607] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5607] write(3, "1000", 4) = 4 [pid 5607] close(3) = 0 [pid 5607] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5607] memfd_create("syzkaller", 0) = 3 [pid 5607] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5607] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5607] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5607] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5607] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5607] close(3) = 0 [pid 5607] mkdir("./file0", 0777) = 0 [pid 5607] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5607] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5607] chdir("./file0") = 0 [pid 5607] ioctl(4, LOOP_CLR_FD) = 0 [pid 5607] close(4) = 0 [ 147.906504][ T5607] loop0: detected capacity change from 0 to 2048 [ 147.924881][ T5608] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 147.939367][ T5607] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 147.950260][ T5607] Remounting filesystem read-only [pid 5607] creat("./file2", 040) = 4 [pid 5607] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5607] exit_group(0) = ? [pid 5607] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5607, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- umount2("./287", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./287", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./287/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./287/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./287/binderfs") = 0 [ 147.961460][ T5607] NILFS (loop0): error -5 truncating bmap (ino=16) [ 147.972187][ T5607] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 147.982374][ T5607] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 147.991786][ T5607] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./287/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./287/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./287/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./287/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./287/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./287/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./287") = 0 mkdir("./288", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5609 ./strace-static-x86_64: Process 5609 attached [pid 5609] set_robust_list(0x555556375660, 24) = 0 [pid 5609] chdir("./288") = 0 [pid 5609] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5609] setpgid(0, 0) = 0 [pid 5609] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5609] write(3, "1000", 4) = 4 [pid 5609] close(3) = 0 [pid 5609] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5609] memfd_create("syzkaller", 0) = 3 [pid 5609] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 148.008996][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 148.016251][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 148.024179][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 148.033630][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 148.042581][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 148.051746][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5609] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5609] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5609] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5609] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5609] close(3) = 0 [pid 5609] mkdir("./file0", 0777) = 0 [pid 5609] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5609] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5609] chdir("./file0") = 0 [pid 5609] ioctl(4, LOOP_CLR_FD) = 0 [pid 5609] close(4) = 0 [ 148.111145][ T5609] loop0: detected capacity change from 0 to 2048 [ 148.128450][ T5610] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 148.147463][ T5609] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5609] creat("./file2", 040) = 4 [pid 5609] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5609] exit_group(0) = ? [pid 5609] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5609, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./288", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./288", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./288/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./288/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./288/binderfs") = 0 [ 148.162215][ T5609] Remounting filesystem read-only [ 148.167432][ T5609] NILFS (loop0): error -5 truncating bmap (ino=16) [ 148.175609][ T5609] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 148.185805][ T5609] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 148.195787][ T5609] NILFS (loop0): error -5 truncating bmap (ino=16) [ 148.210965][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 148.218149][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 148.225764][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 148.234946][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 148.243965][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./288/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./288/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./288/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./288/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./288/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./288/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./288") = 0 mkdir("./289", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 [ 148.254730][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5611 attached [pid 5611] set_robust_list(0x555556375660, 24) = 0 [pid 5611] chdir("./289") = 0 [pid 5024] <... clone resumed>, child_tidptr=0x555556375650) = 5611 [pid 5611] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5611] setpgid(0, 0) = 0 [pid 5611] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5611] write(3, "1000", 4) = 4 [pid 5611] close(3) = 0 [pid 5611] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5611] memfd_create("syzkaller", 0) = 3 [pid 5611] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5611] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5611] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5611] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5611] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5611] close(3) = 0 [pid 5611] mkdir("./file0", 0777) = 0 [pid 5611] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5611] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5611] chdir("./file0") = 0 [pid 5611] ioctl(4, LOOP_CLR_FD) = 0 [pid 5611] close(4) = 0 [ 148.356292][ T5611] loop0: detected capacity change from 0 to 2048 [ 148.379568][ T5612] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5611] creat("./file2", 040) = 4 [ 148.404028][ T5611] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 148.415134][ T5611] Remounting filesystem read-only [ 148.420742][ T5611] NILFS (loop0): error -5 truncating bmap (ino=16) [ 148.429148][ T5611] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 148.440965][ T5611] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5611] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5611] exit_group(0) = ? [pid 5611] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5611, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./289", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./289", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./289/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./289/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./289/binderfs") = 0 [ 148.455730][ T5611] NILFS (loop0): error -5 truncating bmap (ino=16) [ 148.486089][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 148.493653][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 umount2("./289/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./289/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./289/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./289/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./289/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./289/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./289") = 0 mkdir("./290", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 [ 148.501002][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 148.511720][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 148.520624][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 148.530739][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5613 ./strace-static-x86_64: Process 5613 attached [pid 5613] set_robust_list(0x555556375660, 24) = 0 [pid 5613] chdir("./290") = 0 [pid 5613] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5613] setpgid(0, 0) = 0 [pid 5613] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5613] write(3, "1000", 4) = 4 [pid 5613] close(3) = 0 [pid 5613] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5613] memfd_create("syzkaller", 0) = 3 [pid 5613] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5613] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5613] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5613] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5613] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5613] close(3) = 0 [pid 5613] mkdir("./file0", 0777) = 0 [pid 5613] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5613] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5613] chdir("./file0") = 0 [pid 5613] ioctl(4, LOOP_CLR_FD) = 0 [pid 5613] close(4) = 0 [ 148.639540][ T5613] loop0: detected capacity change from 0 to 2048 [ 148.660065][ T5614] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5613] creat("./file2", 040) = 4 [pid 5613] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5613] exit_group(0) = ? [pid 5613] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5613, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./290", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./290", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./290/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./290/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./290/binderfs") = 0 [ 148.680275][ T5613] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 148.692501][ T5613] Remounting filesystem read-only [ 148.699724][ T5613] NILFS (loop0): error -5 truncating bmap (ino=16) [ 148.712642][ T5613] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 148.723500][ T5613] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 148.733380][ T5613] NILFS (loop0): error -5 truncating bmap (ino=16) [ 148.753636][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 148.760724][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 148.768253][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 148.777391][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 148.786573][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./290/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./290/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./290/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./290/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./290/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./290/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./290") = 0 mkdir("./291", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5615 ./strace-static-x86_64: Process 5615 attached [pid 5615] set_robust_list(0x555556375660, 24) = 0 [pid 5615] chdir("./291") = 0 [pid 5615] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [ 148.795797][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5615] setpgid(0, 0) = 0 [pid 5615] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5615] write(3, "1000", 4) = 4 [pid 5615] close(3) = 0 [pid 5615] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5615] memfd_create("syzkaller", 0) = 3 [pid 5615] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5615] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5615] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5615] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5615] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5615] close(3) = 0 [pid 5615] mkdir("./file0", 0777) = 0 [pid 5615] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5615] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5615] chdir("./file0") = 0 [pid 5615] ioctl(4, LOOP_CLR_FD) = 0 [pid 5615] close(4) = 0 [ 148.894487][ T5615] loop0: detected capacity change from 0 to 2048 [ 148.915922][ T5616] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5615] creat("./file2", 040) = 4 [ 148.945580][ T5615] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 148.955610][ T5615] Remounting filesystem read-only [ 148.960815][ T5615] NILFS (loop0): error -5 truncating bmap (ino=16) [ 148.969697][ T5615] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 148.980120][ T5615] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5615] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5615] exit_group(0) = ? [pid 5615] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5615, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./291", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./291", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./291/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./291/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./291/binderfs") = 0 [ 148.990578][ T5615] NILFS (loop0): error -5 truncating bmap (ino=16) [ 149.015329][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 149.022925][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 149.030751][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./291/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./291/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./291/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./291/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./291/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./291/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./291") = 0 mkdir("./292", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 149.040897][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 149.050174][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 149.060704][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5617 ./strace-static-x86_64: Process 5617 attached [pid 5617] set_robust_list(0x555556375660, 24) = 0 [pid 5617] chdir("./292") = 0 [pid 5617] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5617] setpgid(0, 0) = 0 [pid 5617] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5617] write(3, "1000", 4) = 4 [pid 5617] close(3) = 0 [pid 5617] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5617] memfd_create("syzkaller", 0) = 3 [pid 5617] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5617] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5617] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5617] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5617] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5617] close(3) = 0 [pid 5617] mkdir("./file0", 0777) = 0 [pid 5617] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5617] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5617] chdir("./file0") = 0 [pid 5617] ioctl(4, LOOP_CLR_FD) = 0 [pid 5617] close(4) = 0 [ 149.144606][ T5617] loop0: detected capacity change from 0 to 2048 [ 149.160705][ T5618] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 149.167481][ T5617] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 149.182155][ T5617] Remounting filesystem read-only [pid 5617] creat("./file2", 040) = 4 [pid 5617] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5617] exit_group(0) = ? [pid 5617] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5617, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./292", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./292", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./292/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./292/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./292/binderfs") = 0 [ 149.197786][ T5617] NILFS (loop0): error -5 truncating bmap (ino=16) [ 149.206777][ T5617] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 149.216767][ T5617] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 149.226155][ T5617] NILFS (loop0): error -5 truncating bmap (ino=16) [ 149.247379][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 149.254679][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 149.262341][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 149.272274][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 149.281195][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./292/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./292/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./292/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./292/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./292/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./292/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./292") = 0 mkdir("./293", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5619 ./strace-static-x86_64: Process 5619 attached [pid 5619] set_robust_list(0x555556375660, 24) = 0 [pid 5619] chdir("./293") = 0 [pid 5619] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5619] setpgid(0, 0) = 0 [ 149.290897][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5619] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5619] write(3, "1000", 4) = 4 [pid 5619] close(3) = 0 [pid 5619] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5619] memfd_create("syzkaller", 0) = 3 [pid 5619] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5619] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5619] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5619] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5619] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5619] close(3) = 0 [pid 5619] mkdir("./file0", 0777) = 0 [pid 5619] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5619] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5619] chdir("./file0") = 0 [pid 5619] ioctl(4, LOOP_CLR_FD) = 0 [pid 5619] close(4) = 0 [ 149.371852][ T5619] loop0: detected capacity change from 0 to 2048 [ 149.389580][ T5620] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 149.403494][ T5619] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 149.416442][ T5619] Remounting filesystem read-only [pid 5619] creat("./file2", 040) = 4 [pid 5619] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5619] exit_group(0) = ? [pid 5619] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5619, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./293", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./293", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./293/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./293/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./293/binderfs") = 0 [ 149.421891][ T5619] NILFS (loop0): error -5 truncating bmap (ino=16) [ 149.429861][ T5619] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 149.440463][ T5619] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 149.450054][ T5619] NILFS (loop0): error -5 truncating bmap (ino=16) [ 149.486857][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 149.493949][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 149.501375][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 149.510634][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 149.519796][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./293/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./293/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./293/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./293/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./293/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./293/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./293") = 0 mkdir("./294", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5621 ./strace-static-x86_64: Process 5621 attached [pid 5621] set_robust_list(0x555556375660, 24) = 0 [pid 5621] chdir("./294") = 0 [pid 5621] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [ 149.529014][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5621] setpgid(0, 0) = 0 [pid 5621] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5621] write(3, "1000", 4) = 4 [pid 5621] close(3) = 0 [pid 5621] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5621] memfd_create("syzkaller", 0) = 3 [pid 5621] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5621] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5621] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5621] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5621] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5621] close(3) = 0 [pid 5621] mkdir("./file0", 0777) = 0 [pid 5621] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5621] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5621] chdir("./file0") = 0 [pid 5621] ioctl(4, LOOP_CLR_FD) = 0 [pid 5621] close(4) = 0 [ 149.617801][ T5621] loop0: detected capacity change from 0 to 2048 [ 149.636963][ T5622] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 149.652123][ T5621] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 149.662607][ T5621] Remounting filesystem read-only [pid 5621] creat("./file2", 040) = 4 [pid 5621] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5621] exit_group(0) = ? [pid 5621] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5621, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./294", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./294", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./294/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./294/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./294/binderfs") = 0 [ 149.668532][ T5621] NILFS (loop0): error -5 truncating bmap (ino=16) [ 149.677643][ T5621] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 149.688476][ T5621] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 149.699994][ T5621] NILFS (loop0): error -5 truncating bmap (ino=16) [ 149.716861][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 149.726465][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 149.734666][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 149.744256][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 149.753183][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./294/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./294/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./294/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./294/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./294/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./294/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./294") = 0 mkdir("./295", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5623 ./strace-static-x86_64: Process 5623 attached [pid 5623] set_robust_list(0x555556375660, 24) = 0 [pid 5623] chdir("./295") = 0 [pid 5623] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5623] setpgid(0, 0) = 0 [pid 5623] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5623] write(3, "1000", 4) = 4 [pid 5623] close(3) = 0 [pid 5623] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5623] memfd_create("syzkaller", 0) = 3 [pid 5623] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 149.762663][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5623] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5623] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5623] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5623] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5623] close(3) = 0 [pid 5623] mkdir("./file0", 0777) = 0 [pid 5623] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5623] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5623] chdir("./file0") = 0 [pid 5623] ioctl(4, LOOP_CLR_FD) = 0 [pid 5623] close(4) = 0 [pid 5623] creat("./file2", 040) = 4 [ 149.827749][ T5623] loop0: detected capacity change from 0 to 2048 [ 149.844189][ T5624] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 149.854578][ T5623] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 149.865408][ T5623] Remounting filesystem read-only [ 149.871256][ T5623] NILFS (loop0): error -5 truncating bmap (ino=16) [pid 5623] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5623] exit_group(0) = ? [pid 5623] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5623, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./295", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./295", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./295/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./295/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./295/binderfs") = 0 [ 149.879799][ T5623] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 149.890785][ T5623] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 149.900990][ T5623] NILFS (loop0): error -5 truncating bmap (ino=16) [ 149.917816][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./295/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./295/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./295/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./295/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./295/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./295/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./295") = 0 mkdir("./296", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 149.925919][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 149.933419][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 149.942435][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 149.952009][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 149.961373][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5625 ./strace-static-x86_64: Process 5625 attached [pid 5625] set_robust_list(0x555556375660, 24) = 0 [pid 5625] chdir("./296") = 0 [pid 5625] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5625] setpgid(0, 0) = 0 [pid 5625] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5625] write(3, "1000", 4) = 4 [pid 5625] close(3) = 0 [pid 5625] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5625] memfd_create("syzkaller", 0) = 3 [pid 5625] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5625] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5625] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5625] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5625] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5625] close(3) = 0 [pid 5625] mkdir("./file0", 0777) = 0 [pid 5625] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5625] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5625] chdir("./file0") = 0 [pid 5625] ioctl(4, LOOP_CLR_FD) = 0 [pid 5625] close(4) = 0 [pid 5625] creat("./file2", 040) = 4 [ 150.039613][ T5625] loop0: detected capacity change from 0 to 2048 [ 150.055015][ T5626] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 150.065607][ T5625] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 150.076448][ T5625] Remounting filesystem read-only [ 150.082619][ T5625] NILFS (loop0): error -5 truncating bmap (ino=16) [pid 5625] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5625] exit_group(0) = ? [pid 5625] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5625, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- umount2("./296", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./296", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./296/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./296/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./296/binderfs") = 0 [ 150.090174][ T5625] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 150.100676][ T5625] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 150.114403][ T5625] NILFS (loop0): error -5 truncating bmap (ino=16) [ 150.131773][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./296/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./296/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./296/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./296/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./296/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./296/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./296") = 0 mkdir("./297", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5627 ./strace-static-x86_64: Process 5627 attached [pid 5627] set_robust_list(0x555556375660, 24) = 0 [pid 5627] chdir("./297") = 0 [pid 5627] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5627] setpgid(0, 0) = 0 [pid 5627] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5627] write(3, "1000", 4) = 4 [pid 5627] close(3) = 0 [pid 5627] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5627] memfd_create("syzkaller", 0) = 3 [pid 5627] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 150.138808][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 150.147240][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 150.156904][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 150.166131][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 150.175879][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5627] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5627] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5627] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5627] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5627] close(3) = 0 [pid 5627] mkdir("./file0", 0777) = 0 [pid 5627] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5627] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5627] chdir("./file0") = 0 [pid 5627] ioctl(4, LOOP_CLR_FD) = 0 [pid 5627] close(4) = 0 [ 150.244224][ T5627] loop0: detected capacity change from 0 to 2048 [ 150.261154][ T5628] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 150.283925][ T5627] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5627] creat("./file2", 040) = 4 [pid 5627] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5627] exit_group(0) = ? [pid 5627] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5627, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./297", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./297", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./297/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./297/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./297/binderfs") = 0 [ 150.295688][ T5627] Remounting filesystem read-only [ 150.301833][ T5627] NILFS (loop0): error -5 truncating bmap (ino=16) [ 150.310345][ T5627] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 150.320768][ T5627] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 150.331323][ T5627] NILFS (loop0): error -5 truncating bmap (ino=16) [ 150.347497][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 150.354828][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 150.362239][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 150.371173][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 150.380441][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./297/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./297/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./297/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./297/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./297/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./297/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./297") = 0 mkdir("./298", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5629 ./strace-static-x86_64: Process 5629 attached [pid 5629] set_robust_list(0x555556375660, 24) = 0 [pid 5629] chdir("./298") = 0 [pid 5629] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5629] setpgid(0, 0) = 0 [pid 5629] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5629] write(3, "1000", 4) = 4 [pid 5629] close(3) = 0 [pid 5629] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5629] memfd_create("syzkaller", 0) = 3 [pid 5629] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 150.389936][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5629] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5629] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5629] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5629] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5629] close(3) = 0 [pid 5629] mkdir("./file0", 0777) = 0 [pid 5629] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5629] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5629] chdir("./file0") = 0 [pid 5629] ioctl(4, LOOP_CLR_FD) = 0 [pid 5629] close(4) = 0 [ 150.469697][ T5629] loop0: detected capacity change from 0 to 2048 [ 150.485242][ T5630] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 150.495549][ T5629] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 150.506313][ T5629] Remounting filesystem read-only [pid 5629] creat("./file2", 040) = 4 [pid 5629] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5629] exit_group(0) = ? [pid 5629] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5629, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./298", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./298", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./298/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./298/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./298/binderfs") = 0 [ 150.515703][ T5629] NILFS (loop0): error -5 truncating bmap (ino=16) [ 150.530164][ T5629] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 150.540188][ T5629] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 150.550574][ T5629] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./298/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./298/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./298/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./298/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./298/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./298/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./298") = 0 mkdir("./299", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5631 ./strace-static-x86_64: Process 5631 attached [pid 5631] set_robust_list(0x555556375660, 24) = 0 [pid 5631] chdir("./299") = 0 [pid 5631] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5631] setpgid(0, 0) = 0 [pid 5631] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [ 150.566585][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 150.573665][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 150.581247][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 150.590505][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 150.600079][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 150.611294][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5631] write(3, "1000", 4) = 4 [pid 5631] close(3) = 0 [pid 5631] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5631] memfd_create("syzkaller", 0) = 3 [pid 5631] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5631] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5631] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5631] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5631] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5631] close(3) = 0 [pid 5631] mkdir("./file0", 0777) = 0 [pid 5631] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5631] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5631] chdir("./file0") = 0 [pid 5631] ioctl(4, LOOP_CLR_FD) = 0 [pid 5631] close(4) = 0 [ 150.686887][ T5631] loop0: detected capacity change from 0 to 2048 [ 150.706130][ T5632] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5631] creat("./file2", 040) = 4 [pid 5631] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5631] exit_group(0) = ? [pid 5631] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5631, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./299", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./299", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./299/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./299/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./299/binderfs") = 0 [ 150.730104][ T5631] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 150.743602][ T5631] Remounting filesystem read-only [ 150.748962][ T5631] NILFS (loop0): error -5 truncating bmap (ino=16) [ 150.758618][ T5631] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 150.768769][ T5631] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 150.778032][ T5631] NILFS (loop0): error -5 truncating bmap (ino=16) [ 150.794501][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 150.801652][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 150.811071][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 150.820530][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 150.829667][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./299/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./299/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./299/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./299/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./299/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./299/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./299") = 0 mkdir("./300", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5633 ./strace-static-x86_64: Process 5633 attached [pid 5633] set_robust_list(0x555556375660, 24) = 0 [pid 5633] chdir("./300") = 0 [pid 5633] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5633] setpgid(0, 0) = 0 [pid 5633] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5633] write(3, "1000", 4) = 4 [pid 5633] close(3) = 0 [pid 5633] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5633] memfd_create("syzkaller", 0) = 3 [pid 5633] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 150.839041][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5633] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5633] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5633] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5633] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5633] close(3) = 0 [pid 5633] mkdir("./file0", 0777) = 0 [pid 5633] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5633] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5633] chdir("./file0") = 0 [pid 5633] ioctl(4, LOOP_CLR_FD) = 0 [pid 5633] close(4) = 0 [ 150.899002][ T5633] loop0: detected capacity change from 0 to 2048 [ 150.914209][ T5634] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 150.928247][ T5633] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 150.941317][ T5633] Remounting filesystem read-only [pid 5633] creat("./file2", 040) = 4 [pid 5633] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5633] exit_group(0) = ? [pid 5633] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5633, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- umount2("./300", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./300", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./300/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./300/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./300/binderfs") = 0 [ 150.946898][ T5633] NILFS (loop0): error -5 truncating bmap (ino=16) [ 150.954820][ T5633] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 150.965245][ T5633] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 150.974667][ T5633] NILFS (loop0): error -5 truncating bmap (ino=16) [ 150.989614][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./300/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./300/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./300/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./300/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./300/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./300/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./300") = 0 mkdir("./301", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5635 ./strace-static-x86_64: Process 5635 attached [pid 5635] set_robust_list(0x555556375660, 24) = 0 [pid 5635] chdir("./301") = 0 [ 150.996811][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 151.004230][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 151.013617][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 151.022606][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 151.032059][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5635] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5635] setpgid(0, 0) = 0 [pid 5635] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5635] write(3, "1000", 4) = 4 [pid 5635] close(3) = 0 [pid 5635] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5635] memfd_create("syzkaller", 0) = 3 [pid 5635] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5635] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5635] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5635] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5635] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5635] close(3) = 0 [pid 5635] mkdir("./file0", 0777) = 0 [pid 5635] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5635] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5635] chdir("./file0") = 0 [pid 5635] ioctl(4, LOOP_CLR_FD) = 0 [pid 5635] close(4) = 0 [pid 5635] creat("./file2", 040) = 4 [ 151.112924][ T5635] loop0: detected capacity change from 0 to 2048 [ 151.129473][ T5636] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 151.137893][ T5635] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 151.150207][ T5635] Remounting filesystem read-only [ 151.155668][ T5635] NILFS (loop0): error -5 truncating bmap (ino=16) [pid 5635] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5635] exit_group(0) = ? [pid 5635] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5635, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./301", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./301", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./301/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./301/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./301/binderfs") = 0 [ 151.164102][ T5635] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 151.174430][ T5635] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 151.183664][ T5635] NILFS (loop0): error -5 truncating bmap (ino=16) [ 151.202937][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./301/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./301/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./301/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./301/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./301/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./301/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./301") = 0 mkdir("./302", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5637 ./strace-static-x86_64: Process 5637 attached [pid 5637] set_robust_list(0x555556375660, 24) = 0 [pid 5637] chdir("./302") = 0 [pid 5637] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5637] setpgid(0, 0) = 0 [pid 5637] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5637] write(3, "1000", 4) = 4 [pid 5637] close(3) = 0 [pid 5637] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5637] memfd_create("syzkaller", 0) = 3 [pid 5637] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 151.210056][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 151.217964][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 151.227095][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 151.236251][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 151.245741][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5637] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5637] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5637] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5637] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5637] close(3) = 0 [pid 5637] mkdir("./file0", 0777) = 0 [pid 5637] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5637] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5637] chdir("./file0") = 0 [pid 5637] ioctl(4, LOOP_CLR_FD) = 0 [pid 5637] close(4) = 0 [ 151.307579][ T5637] loop0: detected capacity change from 0 to 2048 [ 151.324278][ T5638] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 151.344609][ T5637] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5637] creat("./file2", 040) = 4 [pid 5637] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5637] exit_group(0) = ? [pid 5637] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5637, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./302", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./302", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./302/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./302/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./302/binderfs") = 0 [ 151.355555][ T5637] Remounting filesystem read-only [ 151.361345][ T5637] NILFS (loop0): error -5 truncating bmap (ino=16) [ 151.370665][ T5637] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 151.381169][ T5637] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 151.390775][ T5637] NILFS (loop0): error -5 truncating bmap (ino=16) [ 151.409995][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 151.417278][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 151.424700][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 151.433827][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 151.442771][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./302/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./302/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./302/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./302/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./302/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./302/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./302") = 0 mkdir("./303", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5639 ./strace-static-x86_64: Process 5639 attached [pid 5639] set_robust_list(0x555556375660, 24) = 0 [ 151.451925][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5639] chdir("./303") = 0 [pid 5639] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5639] setpgid(0, 0) = 0 [pid 5639] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5639] write(3, "1000", 4) = 4 [pid 5639] close(3) = 0 [pid 5639] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5639] memfd_create("syzkaller", 0) = 3 [pid 5639] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5639] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5639] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5639] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5639] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5639] close(3) = 0 [pid 5639] mkdir("./file0", 0777) = 0 [pid 5639] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5639] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5639] chdir("./file0") = 0 [pid 5639] ioctl(4, LOOP_CLR_FD) = 0 [pid 5639] close(4) = 0 [ 151.531804][ T5639] loop0: detected capacity change from 0 to 2048 [ 151.547289][ T5640] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 151.563298][ T5639] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 151.573707][ T5639] Remounting filesystem read-only [pid 5639] creat("./file2", 040) = 4 [pid 5639] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5639] exit_group(0) = ? [pid 5639] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5639, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./303", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./303", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./303/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./303/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./303/binderfs") = 0 [ 151.578880][ T5639] NILFS (loop0): error -5 truncating bmap (ino=16) [ 151.586599][ T5639] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 151.599245][ T5639] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 151.608612][ T5639] NILFS (loop0): error -5 truncating bmap (ino=16) [ 151.625427][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./303/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./303/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./303/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./303/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./303/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./303/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./303") = 0 mkdir("./304", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5641 ./strace-static-x86_64: Process 5641 attached [pid 5641] set_robust_list(0x555556375660, 24) = 0 [pid 5641] chdir("./304") = 0 [pid 5641] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5641] setpgid(0, 0) = 0 [pid 5641] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5641] write(3, "1000", 4) = 4 [pid 5641] close(3) = 0 [pid 5641] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5641] memfd_create("syzkaller", 0) = 3 [pid 5641] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 151.632521][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 151.639837][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 151.648801][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 151.657799][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 151.667174][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5641] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5641] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5641] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5641] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5641] close(3) = 0 [pid 5641] mkdir("./file0", 0777) = 0 [pid 5641] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5641] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5641] chdir("./file0") = 0 [pid 5641] ioctl(4, LOOP_CLR_FD) = 0 [pid 5641] close(4) = 0 [ 151.728345][ T5641] loop0: detected capacity change from 0 to 2048 [ 151.747091][ T5642] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 151.755052][ T5641] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 151.768124][ T5641] Remounting filesystem read-only [pid 5641] creat("./file2", 040) = 4 [pid 5641] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5641] exit_group(0) = ? [pid 5641] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5641, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./304", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./304", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./304/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./304/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./304/binderfs") = 0 [ 151.773781][ T5641] NILFS (loop0): error -5 truncating bmap (ino=16) [ 151.782022][ T5641] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 151.792599][ T5641] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 151.802175][ T5641] NILFS (loop0): error -5 truncating bmap (ino=16) [ 151.817175][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./304/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./304/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./304/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./304/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./304/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./304/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./304") = 0 mkdir("./305", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5643 ./strace-static-x86_64: Process 5643 attached [pid 5643] set_robust_list(0x555556375660, 24) = 0 [pid 5643] chdir("./305") = 0 [pid 5643] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5643] setpgid(0, 0) = 0 [pid 5643] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5643] write(3, "1000", 4) = 4 [pid 5643] close(3) = 0 [pid 5643] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5643] memfd_create("syzkaller", 0) = 3 [ 151.824265][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 151.831641][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 151.840545][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 151.849522][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 151.858734][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5643] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5643] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5643] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5643] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5643] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5643] close(3) = 0 [pid 5643] mkdir("./file0", 0777) = 0 [pid 5643] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5643] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5643] chdir("./file0") = 0 [pid 5643] ioctl(4, LOOP_CLR_FD) = 0 [pid 5643] close(4) = 0 [ 151.930472][ T5643] loop0: detected capacity change from 0 to 2048 [ 151.948573][ T5644] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 151.967668][ T5643] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5643] creat("./file2", 040) = 4 [pid 5643] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5643] exit_group(0) = ? [pid 5643] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5643, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- umount2("./305", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./305", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./305/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./305/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./305/binderfs") = 0 [ 151.978728][ T5643] Remounting filesystem read-only [ 151.984747][ T5643] NILFS (loop0): error -5 truncating bmap (ino=16) [ 151.994106][ T5643] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 152.004631][ T5643] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 152.014857][ T5643] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./305/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./305/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./305/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./305/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./305/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./305/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./305") = 0 mkdir("./306", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 152.032969][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 152.039983][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 152.047482][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 152.056413][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 152.065364][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 152.074482][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5645 ./strace-static-x86_64: Process 5645 attached [pid 5645] set_robust_list(0x555556375660, 24) = 0 [pid 5645] chdir("./306") = 0 [pid 5645] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5645] setpgid(0, 0) = 0 [pid 5645] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5645] write(3, "1000", 4) = 4 [pid 5645] close(3) = 0 [pid 5645] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5645] memfd_create("syzkaller", 0) = 3 [pid 5645] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5645] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5645] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5645] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5645] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5645] close(3) = 0 [pid 5645] mkdir("./file0", 0777) = 0 [pid 5645] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5645] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5645] chdir("./file0") = 0 [pid 5645] ioctl(4, LOOP_CLR_FD) = 0 [pid 5645] close(4) = 0 [ 152.149534][ T5645] loop0: detected capacity change from 0 to 2048 [ 152.165644][ T5646] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 152.172696][ T5645] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 152.188422][ T5645] Remounting filesystem read-only [pid 5645] creat("./file2", 040) = 4 [pid 5645] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5645] exit_group(0) = ? [pid 5645] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5645, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./306", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./306", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./306/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./306/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./306/binderfs") = 0 [ 152.194824][ T5645] NILFS (loop0): error -5 truncating bmap (ino=16) [ 152.203049][ T5645] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 152.213680][ T5645] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 152.223438][ T5645] NILFS (loop0): error -5 truncating bmap (ino=16) [ 152.240604][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./306/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./306/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./306/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./306/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./306/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./306/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./306") = 0 mkdir("./307", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5647 ./strace-static-x86_64: Process 5647 attached [pid 5647] set_robust_list(0x555556375660, 24) = 0 [ 152.247676][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 152.255440][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 152.264956][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 152.274136][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 152.283813][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5647] chdir("./307") = 0 [pid 5647] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5647] setpgid(0, 0) = 0 [pid 5647] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5647] write(3, "1000", 4) = 4 [pid 5647] close(3) = 0 [pid 5647] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5647] memfd_create("syzkaller", 0) = 3 [pid 5647] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5647] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5647] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5647] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5647] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5647] close(3) = 0 [pid 5647] mkdir("./file0", 0777) = 0 [pid 5647] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5647] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5647] chdir("./file0") = 0 [pid 5647] ioctl(4, LOOP_CLR_FD) = 0 [pid 5647] close(4) = 0 [ 152.368512][ T5647] loop0: detected capacity change from 0 to 2048 [ 152.385049][ T5648] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 152.403407][ T5647] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5647] creat("./file2", 040) = 4 [pid 5647] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5647] exit_group(0) = ? [pid 5647] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5647, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./307", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./307", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./307/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./307/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./307/binderfs") = 0 [ 152.414642][ T5647] Remounting filesystem read-only [ 152.419848][ T5647] NILFS (loop0): error -5 truncating bmap (ino=16) [ 152.428735][ T5647] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 152.438882][ T5647] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 152.448647][ T5647] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./307/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./307/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./307/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./307/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./307/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./307/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./307") = 0 mkdir("./308", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 152.468564][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 152.475656][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 152.483019][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 152.491961][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 152.500854][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 152.510052][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5649 ./strace-static-x86_64: Process 5649 attached [pid 5649] set_robust_list(0x555556375660, 24) = 0 [pid 5649] chdir("./308") = 0 [pid 5649] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5649] setpgid(0, 0) = 0 [pid 5649] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5649] write(3, "1000", 4) = 4 [pid 5649] close(3) = 0 [pid 5649] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5649] memfd_create("syzkaller", 0) = 3 [pid 5649] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5649] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5649] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5649] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5649] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5649] close(3) = 0 [pid 5649] mkdir("./file0", 0777) = 0 [pid 5649] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5649] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5649] chdir("./file0") = 0 [pid 5649] ioctl(4, LOOP_CLR_FD) = 0 [pid 5649] close(4) = 0 [ 152.594248][ T5649] loop0: detected capacity change from 0 to 2048 [ 152.611928][ T5650] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5649] creat("./file2", 040) = 4 [pid 5649] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5649] exit_group(0) = ? [pid 5649] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5649, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./308", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./308", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./308/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./308/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./308/binderfs") = 0 [ 152.634234][ T5649] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 152.647944][ T5649] Remounting filesystem read-only [ 152.654197][ T5649] NILFS (loop0): error -5 truncating bmap (ino=16) [ 152.663074][ T5649] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 152.673652][ T5649] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 152.683359][ T5649] NILFS (loop0): error -5 truncating bmap (ino=16) [ 152.705793][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 152.713791][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 152.722101][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 152.731596][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 152.740664][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./308/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./308/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./308/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./308/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./308/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./308/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./308") = 0 mkdir("./309", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5651 ./strace-static-x86_64: Process 5651 attached [pid 5651] set_robust_list(0x555556375660, 24) = 0 [pid 5651] chdir("./309") = 0 [pid 5651] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5651] setpgid(0, 0) = 0 [pid 5651] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5651] write(3, "1000", 4) = 4 [pid 5651] close(3) = 0 [pid 5651] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5651] memfd_create("syzkaller", 0) = 3 [pid 5651] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 152.751930][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5651] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5651] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5651] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5651] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5651] close(3) = 0 [pid 5651] mkdir("./file0", 0777) = 0 [pid 5651] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5651] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5651] chdir("./file0") = 0 [pid 5651] ioctl(4, LOOP_CLR_FD) = 0 [pid 5651] close(4) = 0 [ 152.812924][ T5651] loop0: detected capacity change from 0 to 2048 [ 152.828885][ T5652] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 152.835944][ T5651] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 152.850087][ T5651] Remounting filesystem read-only [pid 5651] creat("./file2", 040) = 4 [pid 5651] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5651] exit_group(0) = ? [pid 5651] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5651, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./309", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./309", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./309/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./309/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./309/binderfs") = 0 [ 152.857251][ T5651] NILFS (loop0): error -5 truncating bmap (ino=16) [ 152.865392][ T5651] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 152.876092][ T5651] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 152.885938][ T5651] NILFS (loop0): error -5 truncating bmap (ino=16) [ 152.901036][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./309/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./309/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./309/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./309/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./309/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./309/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./309") = 0 mkdir("./310", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5653 ./strace-static-x86_64: Process 5653 attached [pid 5653] set_robust_list(0x555556375660, 24) = 0 [pid 5653] chdir("./310") = 0 [pid 5653] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5653] setpgid(0, 0) = 0 [pid 5653] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5653] write(3, "1000", 4) = 4 [pid 5653] close(3) = 0 [pid 5653] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5653] memfd_create("syzkaller", 0) = 3 [pid 5653] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 152.908187][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 152.915707][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 152.924779][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 152.934155][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 152.943445][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5653] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5653] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5653] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5653] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5653] close(3) = 0 [pid 5653] mkdir("./file0", 0777) = 0 [pid 5653] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5653] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5653] chdir("./file0") = 0 [pid 5653] ioctl(4, LOOP_CLR_FD) = 0 [pid 5653] close(4) = 0 [ 153.004900][ T5653] loop0: detected capacity change from 0 to 2048 [ 153.022950][ T5654] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 153.034362][ T5653] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 153.044858][ T5653] Remounting filesystem read-only [pid 5653] creat("./file2", 040) = 4 [pid 5653] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5653] exit_group(0) = ? [pid 5653] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5653, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- umount2("./310", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./310", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./310/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./310/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./310/binderfs") = 0 [ 153.050702][ T5653] NILFS (loop0): error -5 truncating bmap (ino=16) [ 153.062245][ T5653] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 153.072787][ T5653] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 153.082454][ T5653] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./310/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./310/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./310/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./310/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./310/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./310/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./310") = 0 mkdir("./311", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 153.099763][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 153.108435][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 153.116310][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 153.125539][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 153.134917][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 153.144334][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5655 ./strace-static-x86_64: Process 5655 attached [pid 5655] set_robust_list(0x555556375660, 24) = 0 [pid 5655] chdir("./311") = 0 [pid 5655] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5655] setpgid(0, 0) = 0 [pid 5655] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5655] write(3, "1000", 4) = 4 [pid 5655] close(3) = 0 [pid 5655] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5655] memfd_create("syzkaller", 0) = 3 [pid 5655] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5655] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5655] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5655] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5655] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5655] close(3) = 0 [pid 5655] mkdir("./file0", 0777) = 0 [pid 5655] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5655] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5655] chdir("./file0") = 0 [pid 5655] ioctl(4, LOOP_CLR_FD) = 0 [pid 5655] close(4) = 0 [ 153.224243][ T5655] loop0: detected capacity change from 0 to 2048 [ 153.240627][ T5656] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 153.263578][ T5655] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5655] creat("./file2", 040) = 4 [pid 5655] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5655] exit_group(0) = ? [pid 5655] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5655, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./311", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./311", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./311/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./311/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./311/binderfs") = 0 [ 153.275751][ T5655] Remounting filesystem read-only [ 153.281604][ T5655] NILFS (loop0): error -5 truncating bmap (ino=16) [ 153.290617][ T5655] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 153.302783][ T5655] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 153.312773][ T5655] NILFS (loop0): error -5 truncating bmap (ino=16) [ 153.328661][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 153.336017][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 153.344277][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 153.353602][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 153.362944][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./311/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./311/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./311/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./311/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./311/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./311/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./311") = 0 mkdir("./312", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5657 ./strace-static-x86_64: Process 5657 attached [pid 5657] set_robust_list(0x555556375660, 24) = 0 [pid 5657] chdir("./312") = 0 [pid 5657] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5657] setpgid(0, 0) = 0 [pid 5657] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5657] write(3, "1000", 4) = 4 [pid 5657] close(3) = 0 [pid 5657] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5657] memfd_create("syzkaller", 0) = 3 [pid 5657] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 153.372333][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5657] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5657] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5657] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5657] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5657] close(3) = 0 [pid 5657] mkdir("./file0", 0777) = 0 [pid 5657] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5657] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5657] chdir("./file0") = 0 [pid 5657] ioctl(4, LOOP_CLR_FD) = 0 [pid 5657] close(4) = 0 [ 153.436731][ T5657] loop0: detected capacity change from 0 to 2048 [ 153.452847][ T5658] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 153.466803][ T5657] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 153.477258][ T5657] Remounting filesystem read-only [pid 5657] creat("./file2", 040) = 4 [pid 5657] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5657] exit_group(0) = ? [pid 5657] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5657, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- umount2("./312", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./312", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./312/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./312/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./312/binderfs") = 0 [ 153.483566][ T5657] NILFS (loop0): error -5 truncating bmap (ino=16) [ 153.491622][ T5657] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 153.503062][ T5657] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 153.513047][ T5657] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./312/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./312/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./312/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./312/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./312/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./312/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./312") = 0 mkdir("./313", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5659 ./strace-static-x86_64: Process 5659 attached [pid 5659] set_robust_list(0x555556375660, 24) = 0 [pid 5659] chdir("./313") = 0 [pid 5659] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5659] setpgid(0, 0) = 0 [pid 5659] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5659] write(3, "1000", 4) = 4 [pid 5659] close(3) = 0 [pid 5659] symlink("/dev/binderfs", "./binderfs") = 0 [ 153.530511][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 153.537600][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 153.545014][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 153.553953][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 153.562895][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 153.572058][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5659] memfd_create("syzkaller", 0) = 3 [pid 5659] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5659] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5659] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5659] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5659] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5659] close(3) = 0 [pid 5659] mkdir("./file0", 0777) = 0 [pid 5659] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5659] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5659] chdir("./file0") = 0 [pid 5659] ioctl(4, LOOP_CLR_FD) = 0 [pid 5659] close(4) = 0 [ 153.643654][ T5659] loop0: detected capacity change from 0 to 2048 [ 153.659893][ T5660] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 153.683026][ T5659] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5659] creat("./file2", 040) = 4 [pid 5659] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5659] exit_group(0) = ? [pid 5659] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5659, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./313", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./313", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./313/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./313/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./313/binderfs") = 0 [ 153.695185][ T5659] Remounting filesystem read-only [ 153.700586][ T5659] NILFS (loop0): error -5 truncating bmap (ino=16) [ 153.708896][ T5659] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 153.719030][ T5659] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 153.728577][ T5659] NILFS (loop0): error -5 truncating bmap (ino=16) [ 153.745431][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 153.752939][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 153.760269][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 153.769674][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 153.779138][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./313/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./313/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./313/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./313/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./313/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./313/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./313") = 0 mkdir("./314", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5661 ./strace-static-x86_64: Process 5661 attached [pid 5661] set_robust_list(0x555556375660, 24) = 0 [pid 5661] chdir("./314") = 0 [pid 5661] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5661] setpgid(0, 0) = 0 [pid 5661] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5661] write(3, "1000", 4) = 4 [pid 5661] close(3) = 0 [pid 5661] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5661] memfd_create("syzkaller", 0) = 3 [pid 5661] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 153.788924][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5661] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5661] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5661] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5661] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5661] close(3) = 0 [pid 5661] mkdir("./file0", 0777) = 0 [pid 5661] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5661] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5661] chdir("./file0") = 0 [pid 5661] ioctl(4, LOOP_CLR_FD) = 0 [pid 5661] close(4) = 0 [ 153.850363][ T5661] loop0: detected capacity change from 0 to 2048 [ 153.869141][ T5662] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 153.877116][ T5661] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 153.890077][ T5661] Remounting filesystem read-only [pid 5661] creat("./file2", 040) = 4 [pid 5661] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5661] exit_group(0) = ? [pid 5661] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5661, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./314", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./314", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./314/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./314/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./314/binderfs") = 0 [ 153.895377][ T5661] NILFS (loop0): error -5 truncating bmap (ino=16) [ 153.904607][ T5661] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 153.914664][ T5661] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 153.923882][ T5661] NILFS (loop0): error -5 truncating bmap (ino=16) [ 153.942927][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./314/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./314/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./314/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./314/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./314/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./314/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./314") = 0 mkdir("./315", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5663 ./strace-static-x86_64: Process 5663 attached [pid 5663] set_robust_list(0x555556375660, 24) = 0 [pid 5663] chdir("./315") = 0 [pid 5663] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5663] setpgid(0, 0) = 0 [pid 5663] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5663] write(3, "1000", 4) = 4 [pid 5663] close(3) = 0 [pid 5663] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5663] memfd_create("syzkaller", 0) = 3 [pid 5663] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 153.949965][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 153.957892][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 153.967047][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 153.976094][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 153.985570][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5663] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5663] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5663] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5663] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5663] close(3) = 0 [pid 5663] mkdir("./file0", 0777) = 0 [pid 5663] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5663] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5663] chdir("./file0") = 0 [pid 5663] ioctl(4, LOOP_CLR_FD) = 0 [pid 5663] close(4) = 0 [ 154.048784][ T5663] loop0: detected capacity change from 0 to 2048 [ 154.064132][ T5664] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 154.077665][ T5663] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 154.088901][ T5663] Remounting filesystem read-only [pid 5663] creat("./file2", 040) = 4 [pid 5663] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5663] exit_group(0) = ? [pid 5663] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5663, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./315", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./315", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./315/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./315/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./315/binderfs") = 0 [ 154.094650][ T5663] NILFS (loop0): error -5 truncating bmap (ino=16) [ 154.102609][ T5663] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 154.112687][ T5663] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 154.123628][ T5663] NILFS (loop0): error -5 truncating bmap (ino=16) [ 154.140020][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./315/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./315/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./315/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./315/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./315/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./315/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./315") = 0 mkdir("./316", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5665 ./strace-static-x86_64: Process 5665 attached [pid 5665] set_robust_list(0x555556375660, 24) = 0 [pid 5665] chdir("./316") = 0 [pid 5665] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5665] setpgid(0, 0) = 0 [pid 5665] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5665] write(3, "1000", 4) = 4 [pid 5665] close(3) = 0 [pid 5665] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5665] memfd_create("syzkaller", 0) = 3 [pid 5665] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 154.147071][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 154.154412][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 154.163318][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 154.172290][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 154.181360][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5665] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5665] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5665] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5665] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5665] close(3) = 0 [pid 5665] mkdir("./file0", 0777) = 0 [pid 5665] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5665] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5665] chdir("./file0") = 0 [pid 5665] ioctl(4, LOOP_CLR_FD) = 0 [pid 5665] close(4) = 0 [ 154.239792][ T5665] loop0: detected capacity change from 0 to 2048 [ 154.258799][ T5666] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 154.264395][ T5665] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 154.279722][ T5665] Remounting filesystem read-only [pid 5665] creat("./file2", 040) = 4 [pid 5665] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5665] exit_group(0) = ? [pid 5665] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5665, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./316", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./316", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./316/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./316/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./316/binderfs") = 0 [ 154.285616][ T5665] NILFS (loop0): error -5 truncating bmap (ino=16) [ 154.293516][ T5665] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 154.305250][ T5665] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 154.314485][ T5665] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./316/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./316/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./316/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./316/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./316/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./316/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./316") = 0 mkdir("./317", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5667 ./strace-static-x86_64: Process 5667 attached [pid 5667] set_robust_list(0x555556375660, 24) = 0 [pid 5667] chdir("./317") = 0 [pid 5667] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5667] setpgid(0, 0) = 0 [pid 5667] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5667] write(3, "1000", 4) = 4 [ 154.333727][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 154.340724][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 154.348094][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 154.357006][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 154.365930][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 154.375038][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5667] close(3) = 0 [pid 5667] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5667] memfd_create("syzkaller", 0) = 3 [pid 5667] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5667] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5667] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5667] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5667] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5667] close(3) = 0 [pid 5667] mkdir("./file0", 0777) = 0 [pid 5667] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5667] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5667] chdir("./file0") = 0 [pid 5667] ioctl(4, LOOP_CLR_FD) = 0 [pid 5667] close(4) = 0 [ 154.444165][ T5667] loop0: detected capacity change from 0 to 2048 [ 154.460690][ T5668] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 154.476713][ T5667] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 154.488167][ T5667] Remounting filesystem read-only [pid 5667] creat("./file2", 040) = 4 [pid 5667] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5667] exit_group(0) = ? [pid 5667] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5667, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./317", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./317", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./317/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./317/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [ 154.493788][ T5667] NILFS (loop0): error -5 truncating bmap (ino=16) [ 154.503351][ T5667] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 154.513326][ T5667] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 154.523501][ T5667] NILFS (loop0): error -5 truncating bmap (ino=16) unlink("./317/binderfs") = 0 [ 154.607527][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 154.614759][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 154.622445][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 154.631361][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 154.640337][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./317/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./317/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./317/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./317/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./317/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./317/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./317") = 0 mkdir("./318", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5669 ./strace-static-x86_64: Process 5669 attached [pid 5669] set_robust_list(0x555556375660, 24) = 0 [pid 5669] chdir("./318") = 0 [ 154.649608][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5669] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5669] setpgid(0, 0) = 0 [pid 5669] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5669] write(3, "1000", 4) = 4 [pid 5669] close(3) = 0 [pid 5669] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5669] memfd_create("syzkaller", 0) = 3 [pid 5669] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5669] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5669] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5669] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5669] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5669] close(3) = 0 [pid 5669] mkdir("./file0", 0777) = 0 [pid 5669] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5669] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5669] chdir("./file0") = 0 [pid 5669] ioctl(4, LOOP_CLR_FD) = 0 [pid 5669] close(4) = 0 [ 154.730774][ T5669] loop0: detected capacity change from 0 to 2048 [ 154.749238][ T5670] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 154.755664][ T5669] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 154.770084][ T5669] Remounting filesystem read-only [pid 5669] creat("./file2", 040) = 4 [pid 5669] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5669] exit_group(0) = ? [pid 5669] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5669, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- umount2("./318", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./318", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./318/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./318/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./318/binderfs") = 0 [ 154.781093][ T5669] NILFS (loop0): error -5 truncating bmap (ino=16) [ 154.788573][ T5669] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 154.798975][ T5669] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 154.811031][ T5669] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./318/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./318/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./318/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./318/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./318/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./318/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./318") = 0 mkdir("./319", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5671 ./strace-static-x86_64: Process 5671 attached [pid 5671] set_robust_list(0x555556375660, 24) = 0 [pid 5671] chdir("./319") = 0 [pid 5671] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5671] setpgid(0, 0) = 0 [pid 5671] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5671] write(3, "1000", 4) = 4 [pid 5671] close(3) = 0 [pid 5671] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5671] memfd_create("syzkaller", 0) = 3 [pid 5671] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 154.828244][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 154.835339][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 154.842687][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 154.851661][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 154.860566][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 154.869873][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5671] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5671] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5671] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5671] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5671] close(3) = 0 [pid 5671] mkdir("./file0", 0777) = 0 [pid 5671] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5671] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5671] chdir("./file0") = 0 [pid 5671] ioctl(4, LOOP_CLR_FD) = 0 [pid 5671] close(4) = 0 [ 154.928800][ T5671] loop0: detected capacity change from 0 to 2048 [ 154.946464][ T5672] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 154.956780][ T5671] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 154.967829][ T5671] Remounting filesystem read-only [pid 5671] creat("./file2", 040) = 4 [pid 5671] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5671] exit_group(0) = ? [pid 5671] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5671, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./319", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./319", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./319/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./319/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./319/binderfs") = 0 [ 154.974021][ T5671] NILFS (loop0): error -5 truncating bmap (ino=16) [ 154.989930][ T5671] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 155.000482][ T5671] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 155.010121][ T5671] NILFS (loop0): error -5 truncating bmap (ino=16) [ 155.032665][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 155.039661][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 155.047108][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 155.056123][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 155.065114][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./319/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./319/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./319/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./319/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./319/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./319/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./319") = 0 mkdir("./320", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5673 ./strace-static-x86_64: Process 5673 attached [pid 5673] set_robust_list(0x555556375660, 24) = 0 [pid 5673] chdir("./320") = 0 [pid 5673] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5673] setpgid(0, 0) = 0 [ 155.074452][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5673] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5673] write(3, "1000", 4) = 4 [pid 5673] close(3) = 0 [pid 5673] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5673] memfd_create("syzkaller", 0) = 3 [pid 5673] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5673] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5673] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5673] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5673] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5673] close(3) = 0 [pid 5673] mkdir("./file0", 0777) = 0 [pid 5673] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5673] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5673] chdir("./file0") = 0 [pid 5673] ioctl(4, LOOP_CLR_FD) = 0 [pid 5673] close(4) = 0 [pid 5673] creat("./file2", 040) = 4 [ 155.152985][ T5673] loop0: detected capacity change from 0 to 2048 [ 155.168007][ T5674] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 155.180257][ T5673] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 155.190709][ T5673] Remounting filesystem read-only [ 155.196369][ T5673] NILFS (loop0): error -5 truncating bmap (ino=16) [pid 5673] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5673] exit_group(0) = ? [pid 5673] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5673, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./320", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./320", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./320/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./320/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./320/binderfs") = 0 [ 155.205633][ T5673] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 155.215601][ T5673] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 155.225136][ T5673] NILFS (loop0): error -5 truncating bmap (ino=16) [ 155.241900][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 155.248923][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 umount2("./320/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./320/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./320/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./320/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./320/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./320/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./320") = 0 mkdir("./321", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5675 ./strace-static-x86_64: Process 5675 attached [pid 5675] set_robust_list(0x555556375660, 24) = 0 [pid 5675] chdir("./321") = 0 [pid 5675] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5675] setpgid(0, 0) = 0 [pid 5675] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5675] write(3, "1000", 4) = 4 [pid 5675] close(3) = 0 [ 155.256620][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 155.265877][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 155.275092][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 155.284510][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5675] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5675] memfd_create("syzkaller", 0) = 3 [pid 5675] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5675] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5675] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5675] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5675] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5675] close(3) = 0 [pid 5675] mkdir("./file0", 0777) = 0 [pid 5675] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5675] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5675] chdir("./file0") = 0 [pid 5675] ioctl(4, LOOP_CLR_FD) = 0 [pid 5675] close(4) = 0 [ 155.361190][ T5675] loop0: detected capacity change from 0 to 2048 [ 155.376791][ T5676] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 155.394612][ T5675] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 155.404982][ T5675] Remounting filesystem read-only [pid 5675] creat("./file2", 040) = 4 [pid 5675] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5675] exit_group(0) = ? [pid 5675] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5675, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./321", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./321", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./321/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./321/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./321/binderfs") = 0 [ 155.411118][ T5675] NILFS (loop0): error -5 truncating bmap (ino=16) [ 155.420952][ T5675] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 155.431053][ T5675] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 155.440936][ T5675] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./321/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./321/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./321/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./321/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./321/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./321/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./321") = 0 mkdir("./322", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 155.460371][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 155.467545][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 155.474931][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 155.483956][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 155.492907][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 155.502204][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5677 ./strace-static-x86_64: Process 5677 attached [pid 5677] set_robust_list(0x555556375660, 24) = 0 [pid 5677] chdir("./322") = 0 [pid 5677] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5677] setpgid(0, 0) = 0 [pid 5677] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5677] write(3, "1000", 4) = 4 [pid 5677] close(3) = 0 [pid 5677] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5677] memfd_create("syzkaller", 0) = 3 [pid 5677] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5677] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5677] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5677] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5677] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5677] close(3) = 0 [pid 5677] mkdir("./file0", 0777) = 0 [pid 5677] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5677] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5677] chdir("./file0") = 0 [pid 5677] ioctl(4, LOOP_CLR_FD) = 0 [pid 5677] close(4) = 0 [ 155.576378][ T5677] loop0: detected capacity change from 0 to 2048 [ 155.592930][ T5678] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 155.608000][ T5677] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 155.621570][ T5677] Remounting filesystem read-only [pid 5677] creat("./file2", 040) = 4 [pid 5677] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5677] exit_group(0) = ? [pid 5677] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5677, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./322", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./322", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./322/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./322/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./322/binderfs") = 0 [ 155.627211][ T5677] NILFS (loop0): error -5 truncating bmap (ino=16) [ 155.635435][ T5677] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 155.645570][ T5677] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 155.655298][ T5677] NILFS (loop0): error -5 truncating bmap (ino=16) [ 155.675483][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 155.682793][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 155.690722][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 155.699713][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 155.710007][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./322/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./322/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./322/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./322/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./322/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./322/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./322") = 0 mkdir("./323", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5679 ./strace-static-x86_64: Process 5679 attached [pid 5679] set_robust_list(0x555556375660, 24) = 0 [pid 5679] chdir("./323") = 0 [pid 5679] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5679] setpgid(0, 0) = 0 [pid 5679] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5679] write(3, "1000", 4) = 4 [pid 5679] close(3) = 0 [pid 5679] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5679] memfd_create("syzkaller", 0) = 3 [pid 5679] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 155.719685][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5679] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5679] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5679] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5679] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5679] close(3) = 0 [pid 5679] mkdir("./file0", 0777) = 0 [pid 5679] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5679] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5679] chdir("./file0") = 0 [pid 5679] ioctl(4, LOOP_CLR_FD) = 0 [pid 5679] close(4) = 0 [ 155.790941][ T5679] loop0: detected capacity change from 0 to 2048 [ 155.807968][ T5680] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 155.822206][ T5679] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 155.832726][ T5679] Remounting filesystem read-only [pid 5679] creat("./file2", 040) = 4 [pid 5679] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5679] exit_group(0) = ? [pid 5679] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5679, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./323", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./323", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./323/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./323/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./323/binderfs") = 0 [ 155.837935][ T5679] NILFS (loop0): error -5 truncating bmap (ino=16) [ 155.846539][ T5679] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 155.856818][ T5679] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 155.866472][ T5679] NILFS (loop0): error -5 truncating bmap (ino=16) [ 155.881582][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./323/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./323/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./323/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./323/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./323/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./323/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./323") = 0 mkdir("./324", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5681 ./strace-static-x86_64: Process 5681 attached [pid 5681] set_robust_list(0x555556375660, 24) = 0 [pid 5681] chdir("./324") = 0 [pid 5681] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5681] setpgid(0, 0) = 0 [pid 5681] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5681] write(3, "1000", 4) = 4 [pid 5681] close(3) = 0 [ 155.888577][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 155.896429][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 155.906718][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 155.915720][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 155.925049][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5681] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5681] memfd_create("syzkaller", 0) = 3 [pid 5681] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5681] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5681] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5681] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5681] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5681] close(3) = 0 [pid 5681] mkdir("./file0", 0777) = 0 [pid 5681] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5681] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5681] chdir("./file0") = 0 [pid 5681] ioctl(4, LOOP_CLR_FD) = 0 [pid 5681] close(4) = 0 [ 155.992374][ T5681] loop0: detected capacity change from 0 to 2048 [ 156.008919][ T5682] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 156.024648][ T5681] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 156.036336][ T5681] Remounting filesystem read-only [pid 5681] creat("./file2", 040) = 4 [pid 5681] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5681] exit_group(0) = ? [pid 5681] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5681, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./324", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./324", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./324/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./324/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./324/binderfs") = 0 [ 156.042347][ T5681] NILFS (loop0): error -5 truncating bmap (ino=16) [ 156.050532][ T5681] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 156.060770][ T5681] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 156.070525][ T5681] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./324/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./324/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./324/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./324/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./324/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./324/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./324") = 0 mkdir("./325", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5683 ./strace-static-x86_64: Process 5683 attached [pid 5683] set_robust_list(0x555556375660, 24) = 0 [pid 5683] chdir("./325") = 0 [pid 5683] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5683] setpgid(0, 0) = 0 [ 156.086826][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 156.094053][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 156.101624][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 156.110633][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 156.120065][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 156.129358][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5683] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5683] write(3, "1000", 4) = 4 [pid 5683] close(3) = 0 [pid 5683] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5683] memfd_create("syzkaller", 0) = 3 [pid 5683] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5683] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5683] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5683] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5683] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5683] close(3) = 0 [pid 5683] mkdir("./file0", 0777) = 0 [pid 5683] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5683] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5683] chdir("./file0") = 0 [pid 5683] ioctl(4, LOOP_CLR_FD) = 0 [pid 5683] close(4) = 0 [pid 5683] creat("./file2", 040) = 4 [ 156.211919][ T5683] loop0: detected capacity change from 0 to 2048 [ 156.227822][ T5684] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 156.237007][ T5683] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 156.248901][ T5683] Remounting filesystem read-only [ 156.254677][ T5683] NILFS (loop0): error -5 truncating bmap (ino=16) [pid 5683] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5683] exit_group(0) = ? [pid 5683] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5683, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./325", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./325", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./325/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./325/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./325/binderfs") = 0 [ 156.262836][ T5683] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 156.273293][ T5683] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 156.283154][ T5683] NILFS (loop0): error -5 truncating bmap (ino=16) [ 156.298140][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 156.305194][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 umount2("./325/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./325/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./325/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./325/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./325/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./325/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./325") = 0 mkdir("./326", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5685 ./strace-static-x86_64: Process 5685 attached [pid 5685] set_robust_list(0x555556375660, 24) = 0 [pid 5685] chdir("./326") = 0 [pid 5685] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5685] setpgid(0, 0) = 0 [pid 5685] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5685] write(3, "1000", 4) = 4 [pid 5685] close(3) = 0 [pid 5685] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5685] memfd_create("syzkaller", 0) = 3 [pid 5685] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 156.312677][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 156.322230][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 156.331486][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 156.340703][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5685] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5685] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5685] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5685] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5685] close(3) = 0 [pid 5685] mkdir("./file0", 0777) = 0 [pid 5685] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5685] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5685] chdir("./file0") = 0 [pid 5685] ioctl(4, LOOP_CLR_FD) = 0 [pid 5685] close(4) = 0 [ 156.401608][ T5685] loop0: detected capacity change from 0 to 2048 [ 156.418740][ T5686] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 156.427800][ T5685] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 156.439820][ T5685] Remounting filesystem read-only [ 156.445490][ T5685] NILFS (loop0): error -5 truncating bmap (ino=16) [pid 5685] creat("./file2", 040) = 4 [pid 5685] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5685] exit_group(0) = ? [pid 5685] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5685, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./326", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./326", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./326/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./326/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./326/binderfs") = 0 [ 156.454093][ T5685] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 156.464684][ T5685] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 156.473928][ T5685] NILFS (loop0): error -5 truncating bmap (ino=16) [ 156.492454][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./326/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./326/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./326/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./326/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./326/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./326/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./326") = 0 mkdir("./327", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5687 ./strace-static-x86_64: Process 5687 attached [pid 5687] set_robust_list(0x555556375660, 24) = 0 [pid 5687] chdir("./327") = 0 [pid 5687] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5687] setpgid(0, 0) = 0 [pid 5687] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5687] write(3, "1000", 4) = 4 [pid 5687] close(3) = 0 [ 156.499533][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 156.507011][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 156.516374][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 156.525348][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 156.534537][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5687] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5687] memfd_create("syzkaller", 0) = 3 [pid 5687] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5687] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5687] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5687] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5687] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5687] close(3) = 0 [pid 5687] mkdir("./file0", 0777) = 0 [pid 5687] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5687] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5687] chdir("./file0") = 0 [pid 5687] ioctl(4, LOOP_CLR_FD) = 0 [pid 5687] close(4) = 0 [pid 5687] creat("./file2", 040) = 4 [ 156.610599][ T5687] loop0: detected capacity change from 0 to 2048 [ 156.626954][ T5688] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 156.631382][ T5687] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 156.647779][ T5687] Remounting filesystem read-only [ 156.653615][ T5687] NILFS (loop0): error -5 truncating bmap (ino=16) [pid 5687] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5687] exit_group(0) = ? [pid 5687] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5687, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./327", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./327", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./327/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./327/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./327/binderfs") = 0 [ 156.662516][ T5687] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 156.673084][ T5687] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 156.682361][ T5687] NILFS (loop0): error -5 truncating bmap (ino=16) [ 156.700383][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./327/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./327/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./327/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./327/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./327/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./327/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./327") = 0 mkdir("./328", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5689 ./strace-static-x86_64: Process 5689 attached [pid 5689] set_robust_list(0x555556375660, 24) = 0 [pid 5689] chdir("./328") = 0 [pid 5689] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5689] setpgid(0, 0) = 0 [pid 5689] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5689] write(3, "1000", 4) = 4 [pid 5689] close(3) = 0 [pid 5689] symlink("/dev/binderfs", "./binderfs") = 0 [ 156.707467][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 156.719945][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 156.729288][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 156.738487][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 156.748028][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5689] memfd_create("syzkaller", 0) = 3 [pid 5689] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5689] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5689] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5689] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5689] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5689] close(3) = 0 [pid 5689] mkdir("./file0", 0777) = 0 [pid 5689] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5689] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5689] chdir("./file0") = 0 [pid 5689] ioctl(4, LOOP_CLR_FD) = 0 [pid 5689] close(4) = 0 [ 156.825126][ T5689] loop0: detected capacity change from 0 to 2048 [ 156.840935][ T5690] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 156.856702][ T5689] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 156.867089][ T5689] Remounting filesystem read-only [pid 5689] creat("./file2", 040) = 4 [pid 5689] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5689] exit_group(0) = ? [pid 5689] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5689, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./328", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./328", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./328/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./328/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./328/binderfs") = 0 [ 156.872856][ T5689] NILFS (loop0): error -5 truncating bmap (ino=16) [ 156.880991][ T5689] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 156.892579][ T5689] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 156.902277][ T5689] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./328/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./328/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./328/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./328/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./328/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./328/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./328") = 0 mkdir("./329", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5691 ./strace-static-x86_64: Process 5691 attached [pid 5691] set_robust_list(0x555556375660, 24) = 0 [pid 5691] chdir("./329") = 0 [pid 5691] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5691] setpgid(0, 0) = 0 [pid 5691] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5691] write(3, "1000", 4) = 4 [pid 5691] close(3) = 0 [pid 5691] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5691] memfd_create("syzkaller", 0) = 3 [ 156.919765][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 156.926834][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 156.934545][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 156.943625][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 156.952564][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 156.961773][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5691] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5691] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5691] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5691] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5691] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5691] close(3) = 0 [pid 5691] mkdir("./file0", 0777) = 0 [pid 5691] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5691] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5691] chdir("./file0") = 0 [pid 5691] ioctl(4, LOOP_CLR_FD) = 0 [pid 5691] close(4) = 0 [ 157.030880][ T5691] loop0: detected capacity change from 0 to 2048 [ 157.047886][ T5692] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5691] creat("./file2", 040) = 4 [pid 5691] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5691] exit_group(0) = ? [pid 5691] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5691, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./329", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./329", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./329/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./329/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./329/binderfs") = 0 [ 157.072283][ T5691] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 157.082809][ T5691] Remounting filesystem read-only [ 157.088222][ T5691] NILFS (loop0): error -5 truncating bmap (ino=16) [ 157.095701][ T5691] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 157.105903][ T5691] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 157.115182][ T5691] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./329/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./329/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./329/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./329/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./329/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./329/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./329") = 0 mkdir("./330", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5693 ./strace-static-x86_64: Process 5693 attached [pid 5693] set_robust_list(0x555556375660, 24) = 0 [pid 5693] chdir("./330") = 0 [pid 5693] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5693] setpgid(0, 0) = 0 [pid 5693] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5693] write(3, "1000", 4) = 4 [pid 5693] close(3) = 0 [pid 5693] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5693] memfd_create("syzkaller", 0) = 3 [pid 5693] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 157.130306][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 157.137448][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 157.144822][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 157.153768][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 157.162677][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 157.171868][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5693] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5693] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5693] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5693] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5693] close(3) = 0 [pid 5693] mkdir("./file0", 0777) = 0 [pid 5693] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5693] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5693] chdir("./file0") = 0 [pid 5693] ioctl(4, LOOP_CLR_FD) = 0 [pid 5693] close(4) = 0 [pid 5693] creat("./file2", 040) = 4 [ 157.230611][ T5693] loop0: detected capacity change from 0 to 2048 [ 157.246555][ T5694] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 157.257153][ T5693] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 157.257848][ T5693] Remounting filesystem read-only [ 157.271857][ T5693] NILFS (loop0): error -5 truncating bmap (ino=16) [pid 5693] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5693] exit_group(0) = ? [pid 5693] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5693, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./330", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./330", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./330/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./330/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./330/binderfs") = 0 [ 157.279941][ T5693] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 157.290445][ T5693] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 157.300293][ T5693] NILFS (loop0): error -5 truncating bmap (ino=16) [ 157.318436][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./330/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./330/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./330/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./330/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./330/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./330/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./330") = 0 mkdir("./331", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5695 ./strace-static-x86_64: Process 5695 attached [pid 5695] set_robust_list(0x555556375660, 24) = 0 [ 157.326424][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 157.334079][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 157.343092][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 157.352471][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 157.362341][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5695] chdir("./331") = 0 [pid 5695] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5695] setpgid(0, 0) = 0 [pid 5695] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5695] write(3, "1000", 4) = 4 [pid 5695] close(3) = 0 [pid 5695] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5695] memfd_create("syzkaller", 0) = 3 [pid 5695] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5695] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5695] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5695] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5695] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5695] close(3) = 0 [pid 5695] mkdir("./file0", 0777) = 0 [pid 5695] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5695] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5695] chdir("./file0") = 0 [pid 5695] ioctl(4, LOOP_CLR_FD) = 0 [pid 5695] close(4) = 0 [ 157.448741][ T5695] loop0: detected capacity change from 0 to 2048 [ 157.467490][ T5696] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 157.471988][ T5695] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 157.489045][ T5695] Remounting filesystem read-only [pid 5695] creat("./file2", 040) = 4 [pid 5695] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5695] exit_group(0) = ? [pid 5695] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5695, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- umount2("./331", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./331", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./331/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./331/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./331/binderfs") = 0 [ 157.494954][ T5695] NILFS (loop0): error -5 truncating bmap (ino=16) [ 157.502824][ T5695] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 157.513171][ T5695] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 157.522656][ T5695] NILFS (loop0): error -5 truncating bmap (ino=16) [ 157.537279][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./331/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./331/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./331/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./331/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./331/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./331/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./331") = 0 mkdir("./332", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5697 ./strace-static-x86_64: Process 5697 attached [pid 5697] set_robust_list(0x555556375660, 24) = 0 [pid 5697] chdir("./332") = 0 [pid 5697] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5697] setpgid(0, 0) = 0 [pid 5697] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5697] write(3, "1000", 4) = 4 [pid 5697] close(3) = 0 [pid 5697] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5697] memfd_create("syzkaller", 0) = 3 [pid 5697] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 157.544338][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 157.552306][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 157.561203][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 157.570185][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 157.579556][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5697] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5697] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5697] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5697] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5697] close(3) = 0 [pid 5697] mkdir("./file0", 0777) = 0 [pid 5697] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5697] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5697] chdir("./file0") = 0 [pid 5697] ioctl(4, LOOP_CLR_FD) = 0 [pid 5697] close(4) = 0 [ 157.645756][ T5697] loop0: detected capacity change from 0 to 2048 [ 157.661909][ T5698] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 157.683982][ T5697] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5697] creat("./file2", 040) = 4 [pid 5697] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5697] exit_group(0) = ? [pid 5697] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5697, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./332", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./332", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./332/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./332/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./332/binderfs") = 0 [ 157.696343][ T5697] Remounting filesystem read-only [ 157.702038][ T5697] NILFS (loop0): error -5 truncating bmap (ino=16) [ 157.709865][ T5697] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 157.720112][ T5697] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 157.729639][ T5697] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./332/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./332/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./332/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./332/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./332/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./332/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./332") = 0 mkdir("./333", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5699 ./strace-static-x86_64: Process 5699 attached [pid 5699] set_robust_list(0x555556375660, 24) = 0 [ 157.744978][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 157.752096][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 157.759415][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 157.768805][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 157.777863][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 157.787222][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5699] chdir("./333") = 0 [pid 5699] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5699] setpgid(0, 0) = 0 [pid 5699] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5699] write(3, "1000", 4) = 4 [pid 5699] close(3) = 0 [pid 5699] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5699] memfd_create("syzkaller", 0) = 3 [pid 5699] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5699] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5699] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5699] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5699] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5699] close(3) = 0 [pid 5699] mkdir("./file0", 0777) = 0 [pid 5699] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5699] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5699] chdir("./file0") = 0 [pid 5699] ioctl(4, LOOP_CLR_FD) = 0 [pid 5699] close(4) = 0 [ 157.854648][ T5699] loop0: detected capacity change from 0 to 2048 [ 157.870504][ T5700] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 157.880900][ T5699] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 157.892625][ T5699] Remounting filesystem read-only [ 157.898369][ T5699] NILFS (loop0): error -5 truncating bmap (ino=16) [pid 5699] creat("./file2", 040) = 4 [pid 5699] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5699] exit_group(0) = ? [pid 5699] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5699, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./333", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./333", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./333/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./333/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./333/binderfs") = 0 [ 157.906699][ T5699] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 157.917289][ T5699] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 157.927073][ T5699] NILFS (loop0): error -5 truncating bmap (ino=16) [ 157.945288][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./333/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./333/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./333/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./333/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./333/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./333/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./333") = 0 mkdir("./334", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5701 ./strace-static-x86_64: Process 5701 attached [pid 5701] set_robust_list(0x555556375660, 24) = 0 [pid 5701] chdir("./334") = 0 [pid 5701] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5701] setpgid(0, 0) = 0 [pid 5701] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5701] write(3, "1000", 4) = 4 [pid 5701] close(3) = 0 [pid 5701] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5701] memfd_create("syzkaller", 0) = 3 [pid 5701] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 157.952757][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 157.960065][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 157.969519][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 157.978770][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 157.991175][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5701] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5701] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5701] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5701] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5701] close(3) = 0 [pid 5701] mkdir("./file0", 0777) = 0 [pid 5701] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5701] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5701] chdir("./file0") = 0 [pid 5701] ioctl(4, LOOP_CLR_FD) = 0 [pid 5701] close(4) = 0 [ 158.058613][ T5701] loop0: detected capacity change from 0 to 2048 [ 158.077478][ T5702] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 158.094330][ T5701] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5701] creat("./file2", 040) = 4 [pid 5701] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5701] exit_group(0) = ? [pid 5701] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5701, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- umount2("./334", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./334", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./334/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./334/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./334/binderfs") = 0 [ 158.104605][ T5701] Remounting filesystem read-only [ 158.110154][ T5701] NILFS (loop0): error -5 truncating bmap (ino=16) [ 158.119463][ T5701] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 158.130002][ T5701] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 158.139356][ T5701] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./334/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./334/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./334/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./334/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./334/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./334/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./334") = 0 mkdir("./335", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5703 ./strace-static-x86_64: Process 5703 attached [pid 5703] set_robust_list(0x555556375660, 24) = 0 [pid 5703] chdir("./335") = 0 [ 158.155520][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 158.164520][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 158.172506][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 158.181553][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 158.190715][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 158.200284][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5703] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5703] setpgid(0, 0) = 0 [pid 5703] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5703] write(3, "1000", 4) = 4 [pid 5703] close(3) = 0 [pid 5703] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5703] memfd_create("syzkaller", 0) = 3 [pid 5703] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5703] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5703] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5703] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5703] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5703] close(3) = 0 [pid 5703] mkdir("./file0", 0777) = 0 [pid 5703] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5703] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5703] chdir("./file0") = 0 [pid 5703] ioctl(4, LOOP_CLR_FD) = 0 [pid 5703] close(4) = 0 [ 158.277983][ T5703] loop0: detected capacity change from 0 to 2048 [ 158.295134][ T5704] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 158.309673][ T5703] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 158.320615][ T5703] Remounting filesystem read-only [pid 5703] creat("./file2", 040) = 4 [pid 5703] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5703] exit_group(0) = ? [pid 5703] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5703, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./335", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./335", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./335/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./335/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./335/binderfs") = 0 [ 158.331524][ T5703] NILFS (loop0): error -5 truncating bmap (ino=16) [ 158.339573][ T5703] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 158.349986][ T5703] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 158.359467][ T5703] NILFS (loop0): error -5 truncating bmap (ino=16) [ 158.374923][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./335/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./335/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./335/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./335/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./335/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./335/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./335") = 0 mkdir("./336", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5705 ./strace-static-x86_64: Process 5705 attached [pid 5705] set_robust_list(0x555556375660, 24) = 0 [pid 5705] chdir("./336") = 0 [pid 5705] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [ 158.382458][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 158.389867][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 158.398844][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 158.407823][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 158.417578][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5705] setpgid(0, 0) = 0 [pid 5705] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5705] write(3, "1000", 4) = 4 [pid 5705] close(3) = 0 [pid 5705] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5705] memfd_create("syzkaller", 0) = 3 [pid 5705] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5705] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5705] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5705] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5705] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5705] close(3) = 0 [pid 5705] mkdir("./file0", 0777) = 0 [pid 5705] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5705] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5705] chdir("./file0") = 0 [pid 5705] ioctl(4, LOOP_CLR_FD) = 0 [pid 5705] close(4) = 0 [ 158.496407][ T5705] loop0: detected capacity change from 0 to 2048 [ 158.513625][ T5706] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 158.528306][ T5705] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 158.538851][ T5705] Remounting filesystem read-only [pid 5705] creat("./file2", 040) = 4 [pid 5705] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5705] exit_group(0) = ? [pid 5705] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5705, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./336", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./336", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./336/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./336/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./336/binderfs") = 0 [ 158.544622][ T5705] NILFS (loop0): error -5 truncating bmap (ino=16) [ 158.553000][ T5705] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 158.563358][ T5705] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 158.572686][ T5705] NILFS (loop0): error -5 truncating bmap (ino=16) [ 158.587541][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./336/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./336/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./336/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./336/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./336/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./336/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./336") = 0 mkdir("./337", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5707 ./strace-static-x86_64: Process 5707 attached [pid 5707] set_robust_list(0x555556375660, 24) = 0 [pid 5707] chdir("./337") = 0 [pid 5707] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5707] setpgid(0, 0) = 0 [pid 5707] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5707] write(3, "1000", 4) = 4 [pid 5707] close(3) = 0 [pid 5707] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5707] memfd_create("syzkaller", 0) = 3 [pid 5707] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 158.594823][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 158.602700][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 158.611998][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 158.621065][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 158.630897][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5707] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5707] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5707] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5707] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5707] close(3) = 0 [pid 5707] mkdir("./file0", 0777) = 0 [pid 5707] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5707] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5707] chdir("./file0") = 0 [pid 5707] ioctl(4, LOOP_CLR_FD) = 0 [pid 5707] close(4) = 0 [ 158.687848][ T5707] loop0: detected capacity change from 0 to 2048 [ 158.704343][ T5708] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 158.710678][ T5707] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 158.727004][ T5707] Remounting filesystem read-only [pid 5707] creat("./file2", 040) = 4 [pid 5707] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5707] exit_group(0) = ? [pid 5707] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5707, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- umount2("./337", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./337", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./337/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./337/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./337/binderfs") = 0 [ 158.733438][ T5707] NILFS (loop0): error -5 truncating bmap (ino=16) [ 158.750787][ T5707] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 158.761240][ T5707] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 158.770949][ T5707] NILFS (loop0): error -5 truncating bmap (ino=16) [ 158.787358][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 158.794753][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 158.803118][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 158.812279][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 158.821521][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./337/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./337/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./337/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./337/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./337/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./337/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./337") = 0 mkdir("./338", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5709 attached , child_tidptr=0x555556375650) = 5709 [pid 5709] set_robust_list(0x555556375660, 24) = 0 [pid 5709] chdir("./338") = 0 [pid 5709] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5709] setpgid(0, 0) = 0 [pid 5709] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5709] write(3, "1000", 4) = 4 [pid 5709] close(3) = 0 [pid 5709] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5709] memfd_create("syzkaller", 0) = 3 [ 158.830606][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5709] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5709] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5709] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5709] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5709] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5709] close(3) = 0 [pid 5709] mkdir("./file0", 0777) = 0 [pid 5709] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5709] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5709] chdir("./file0") = 0 [pid 5709] ioctl(4, LOOP_CLR_FD) = 0 [pid 5709] close(4) = 0 [ 158.902024][ T5709] loop0: detected capacity change from 0 to 2048 [ 158.919772][ T5710] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 158.929353][ T5709] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 158.942873][ T5709] Remounting filesystem read-only [pid 5709] creat("./file2", 040) = 4 [pid 5709] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5709] exit_group(0) = ? [pid 5709] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5709, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./338", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./338", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./338/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./338/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./338/binderfs") = 0 [ 158.950461][ T5709] NILFS (loop0): error -5 truncating bmap (ino=16) [ 158.959946][ T5709] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 158.970072][ T5709] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 158.980477][ T5709] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./338/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./338/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./338/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./338/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./338/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./338/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./338") = 0 mkdir("./339", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5711 ./strace-static-x86_64: Process 5711 attached [pid 5711] set_robust_list(0x555556375660, 24) = 0 [pid 5711] chdir("./339") = 0 [pid 5711] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5711] setpgid(0, 0) = 0 [ 158.997828][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 159.005410][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 159.013183][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 159.022309][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 159.031216][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 159.040599][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5711] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5711] write(3, "1000", 4) = 4 [pid 5711] close(3) = 0 [pid 5711] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5711] memfd_create("syzkaller", 0) = 3 [pid 5711] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5711] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5711] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5711] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5711] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5711] close(3) = 0 [pid 5711] mkdir("./file0", 0777) = 0 [pid 5711] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5711] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5711] chdir("./file0") = 0 [pid 5711] ioctl(4, LOOP_CLR_FD) = 0 [pid 5711] close(4) = 0 [ 159.103693][ T5711] loop0: detected capacity change from 0 to 2048 [ 159.119578][ T5712] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 159.134823][ T5711] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 159.144792][ T5711] Remounting filesystem read-only [pid 5711] creat("./file2", 040) = 4 [pid 5711] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5711] exit_group(0) = ? [pid 5711] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5711, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./339", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./339", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./339/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./339/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./339/binderfs") = 0 [ 159.149966][ T5711] NILFS (loop0): error -5 truncating bmap (ino=16) [ 159.158188][ T5711] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 159.168532][ T5711] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 159.179129][ T5711] NILFS (loop0): error -5 truncating bmap (ino=16) [ 159.194761][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./339/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./339/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./339/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./339/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./339/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./339/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./339") = 0 mkdir("./340", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5713 ./strace-static-x86_64: Process 5713 attached [pid 5713] set_robust_list(0x555556375660, 24) = 0 [pid 5713] chdir("./340") = 0 [pid 5713] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5713] setpgid(0, 0) = 0 [pid 5713] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5713] write(3, "1000", 4) = 4 [pid 5713] close(3) = 0 [pid 5713] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5713] memfd_create("syzkaller", 0) = 3 [pid 5713] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 159.201958][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 159.210313][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 159.219312][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 159.228486][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 159.237853][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5713] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5713] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5713] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5713] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5713] close(3) = 0 [pid 5713] mkdir("./file0", 0777) = 0 [pid 5713] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5713] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5713] chdir("./file0") = 0 [pid 5713] ioctl(4, LOOP_CLR_FD) = 0 [pid 5713] close(4) = 0 [pid 5713] creat("./file2", 040) = 4 [ 159.303576][ T5713] loop0: detected capacity change from 0 to 2048 [ 159.320100][ T5714] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 159.329714][ T5713] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 159.341126][ T5713] Remounting filesystem read-only [ 159.346887][ T5713] NILFS (loop0): error -5 truncating bmap (ino=16) [pid 5713] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5713] exit_group(0) = ? [pid 5713] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5713, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./340", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./340", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./340/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./340/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./340/binderfs") = 0 [ 159.355121][ T5713] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 159.366025][ T5713] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 159.375642][ T5713] NILFS (loop0): error -5 truncating bmap (ino=16) [ 159.391114][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 159.398252][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 umount2("./340/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./340/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./340/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./340/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./340/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./340/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./340") = 0 mkdir("./341", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5715 ./strace-static-x86_64: Process 5715 attached [pid 5715] set_robust_list(0x555556375660, 24) = 0 [pid 5715] chdir("./341") = 0 [pid 5715] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5715] setpgid(0, 0) = 0 [pid 5715] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5715] write(3, "1000", 4) = 4 [pid 5715] close(3) = 0 [pid 5715] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5715] memfd_create("syzkaller", 0) = 3 [pid 5715] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 159.405872][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 159.415118][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 159.424074][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 159.433326][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5715] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5715] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5715] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5715] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5715] close(3) = 0 [pid 5715] mkdir("./file0", 0777) = 0 [pid 5715] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5715] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5715] chdir("./file0") = 0 [pid 5715] ioctl(4, LOOP_CLR_FD) = 0 [pid 5715] close(4) = 0 [ 159.495497][ T5715] loop0: detected capacity change from 0 to 2048 [ 159.512964][ T5716] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 159.524609][ T5715] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 159.534743][ T5715] Remounting filesystem read-only [pid 5715] creat("./file2", 040) = 4 [pid 5715] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5715] exit_group(0) = ? [pid 5715] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5715, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./341", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./341", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./341/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./341/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./341/binderfs") = 0 [ 159.540134][ T5715] NILFS (loop0): error -5 truncating bmap (ino=16) [ 159.549071][ T5715] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 159.559785][ T5715] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 159.569073][ T5715] NILFS (loop0): error -5 truncating bmap (ino=16) [ 159.584509][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./341/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./341/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./341/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./341/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./341/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./341/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./341") = 0 mkdir("./342", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5717 ./strace-static-x86_64: Process 5717 attached [pid 5717] set_robust_list(0x555556375660, 24) = 0 [pid 5717] chdir("./342") = 0 [pid 5717] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5717] setpgid(0, 0) = 0 [pid 5717] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5717] write(3, "1000", 4) = 4 [ 159.591589][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 159.599004][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 159.608428][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 159.617433][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 159.626676][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5717] close(3) = 0 [pid 5717] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5717] memfd_create("syzkaller", 0) = 3 [pid 5717] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5717] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5717] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5717] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5717] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5717] close(3) = 0 [pid 5717] mkdir("./file0", 0777) = 0 [pid 5717] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5717] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5717] chdir("./file0") = 0 [pid 5717] ioctl(4, LOOP_CLR_FD) = 0 [pid 5717] close(4) = 0 [ 159.705018][ T5717] loop0: detected capacity change from 0 to 2048 [ 159.721984][ T5718] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 159.740194][ T5717] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5717] creat("./file2", 040) = 4 [ 159.754096][ T5717] Remounting filesystem read-only [ 159.771487][ T5717] NILFS (loop0): error -5 truncating bmap (ino=16) [ 159.779390][ T5717] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 159.789744][ T5717] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5717] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5717] exit_group(0) = ? [pid 5717] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5717, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./342", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./342", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./342/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./342/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./342/binderfs") = 0 [ 159.799868][ T5717] NILFS (loop0): error -5 truncating bmap (ino=16) [ 159.817591][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 159.824740][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 159.832419][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 159.841768][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./342/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./342/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./342/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./342/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./342/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./342/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./342") = 0 mkdir("./343", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5719 ./strace-static-x86_64: Process 5719 attached [pid 5719] set_robust_list(0x555556375660, 24) = 0 [pid 5719] chdir("./343") = 0 [pid 5719] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5719] setpgid(0, 0) = 0 [pid 5719] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5719] write(3, "1000", 4) = 4 [pid 5719] close(3) = 0 [pid 5719] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5719] memfd_create("syzkaller", 0) = 3 [pid 5719] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 159.850688][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 159.860365][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5719] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5719] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5719] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5719] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5719] close(3) = 0 [pid 5719] mkdir("./file0", 0777) = 0 [pid 5719] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5719] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5719] chdir("./file0") = 0 [pid 5719] ioctl(4, LOOP_CLR_FD) = 0 [pid 5719] close(4) = 0 [ 159.927036][ T5719] loop0: detected capacity change from 0 to 2048 [ 159.944885][ T5720] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5719] creat("./file2", 040) = 4 [pid 5719] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5719] exit_group(0) = ? [pid 5719] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5719, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./343", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./343", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./343/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./343/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./343/binderfs") = 0 [ 159.971883][ T5719] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 159.982154][ T5719] Remounting filesystem read-only [ 159.987254][ T5719] NILFS (loop0): error -5 truncating bmap (ino=16) [ 159.995043][ T5719] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 160.005289][ T5719] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 160.014798][ T5719] NILFS (loop0): error -5 truncating bmap (ino=16) [ 160.029666][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 160.036821][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 160.044498][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 160.053737][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 160.062998][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./343/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./343/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./343/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./343/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./343/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./343/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./343") = 0 mkdir("./344", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5721 ./strace-static-x86_64: Process 5721 attached [pid 5721] set_robust_list(0x555556375660, 24) = 0 [pid 5721] chdir("./344") = 0 [pid 5721] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5721] setpgid(0, 0) = 0 [pid 5721] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5721] write(3, "1000", 4) = 4 [pid 5721] close(3) = 0 [pid 5721] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5721] memfd_create("syzkaller", 0) = 3 [ 160.072270][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5721] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5721] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5721] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5721] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5721] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5721] close(3) = 0 [pid 5721] mkdir("./file0", 0777) = 0 [pid 5721] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5721] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5721] chdir("./file0") = 0 [pid 5721] ioctl(4, LOOP_CLR_FD) = 0 [pid 5721] close(4) = 0 [pid 5721] creat("./file2", 040) = 4 [ 160.140761][ T5721] loop0: detected capacity change from 0 to 2048 [ 160.156498][ T5722] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 160.166079][ T5721] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 160.177298][ T5721] Remounting filesystem read-only [ 160.183078][ T5721] NILFS (loop0): error -5 truncating bmap (ino=16) [pid 5721] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5721] exit_group(0) = ? [pid 5721] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5721, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./344", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./344", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./344/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./344/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./344/binderfs") = 0 [ 160.193304][ T5721] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 160.204065][ T5721] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 160.213695][ T5721] NILFS (loop0): error -5 truncating bmap (ino=16) [ 160.228678][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 160.235889][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 umount2("./344/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./344/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./344/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./344/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./344/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./344/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./344") = 0 mkdir("./345", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5723 ./strace-static-x86_64: Process 5723 attached [pid 5723] set_robust_list(0x555556375660, 24) = 0 [pid 5723] chdir("./345") = 0 [pid 5723] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5723] setpgid(0, 0) = 0 [pid 5723] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5723] write(3, "1000", 4) = 4 [pid 5723] close(3) = 0 [pid 5723] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5723] memfd_create("syzkaller", 0) = 3 [pid 5723] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 160.243505][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 160.252496][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 160.261784][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 160.270834][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5723] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5723] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5723] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5723] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5723] close(3) = 0 [pid 5723] mkdir("./file0", 0777) = 0 [pid 5723] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5723] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5723] chdir("./file0") = 0 [pid 5723] ioctl(4, LOOP_CLR_FD) = 0 [pid 5723] close(4) = 0 [ 160.332567][ T5723] loop0: detected capacity change from 0 to 2048 [ 160.347456][ T5724] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 160.364182][ T5723] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 160.374416][ T5723] Remounting filesystem read-only [pid 5723] creat("./file2", 040) = 4 [pid 5723] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5723] exit_group(0) = ? [pid 5723] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5723, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./345", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./345", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./345/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./345/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./345/binderfs") = 0 [ 160.379794][ T5723] NILFS (loop0): error -5 truncating bmap (ino=16) [ 160.389159][ T5723] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 160.399901][ T5723] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 160.409345][ T5723] NILFS (loop0): error -5 truncating bmap (ino=16) [ 160.424196][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./345/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./345/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./345/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./345/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./345/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./345/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./345") = 0 mkdir("./346", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5725 ./strace-static-x86_64: Process 5725 attached [ 160.431188][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 160.438991][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 160.447946][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 160.456930][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 160.466171][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5725] set_robust_list(0x555556375660, 24) = 0 [pid 5725] chdir("./346") = 0 [pid 5725] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5725] setpgid(0, 0) = 0 [pid 5725] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5725] write(3, "1000", 4) = 4 [pid 5725] close(3) = 0 [pid 5725] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5725] memfd_create("syzkaller", 0) = 3 [pid 5725] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5725] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5725] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5725] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5725] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5725] close(3) = 0 [pid 5725] mkdir("./file0", 0777) = 0 [pid 5725] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5725] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5725] chdir("./file0") = 0 [pid 5725] ioctl(4, LOOP_CLR_FD) = 0 [pid 5725] close(4) = 0 [ 160.553200][ T5725] loop0: detected capacity change from 0 to 2048 [ 160.568269][ T5726] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 160.586693][ T5725] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 160.597932][ T5725] Remounting filesystem read-only [pid 5725] creat("./file2", 040) = 4 [pid 5725] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5725] exit_group(0) = ? [pid 5725] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5725, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./346", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./346", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./346/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./346/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./346/binderfs") = 0 [ 160.603600][ T5725] NILFS (loop0): error -5 truncating bmap (ino=16) [ 160.611338][ T5725] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 160.623719][ T5725] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 160.633001][ T5725] NILFS (loop0): error -5 truncating bmap (ino=16) [ 160.652166][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 160.659171][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 160.666861][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 160.676058][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 160.687063][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./346/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./346/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./346/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./346/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./346/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./346/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./346") = 0 mkdir("./347", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5727 ./strace-static-x86_64: Process 5727 attached [ 160.698435][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5727] set_robust_list(0x555556375660, 24) = 0 [pid 5727] chdir("./347") = 0 [pid 5727] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5727] setpgid(0, 0) = 0 [pid 5727] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5727] write(3, "1000", 4) = 4 [pid 5727] close(3) = 0 [pid 5727] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5727] memfd_create("syzkaller", 0) = 3 [pid 5727] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5727] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5727] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5727] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5727] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5727] close(3) = 0 [pid 5727] mkdir("./file0", 0777) = 0 [pid 5727] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5727] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5727] chdir("./file0") = 0 [pid 5727] ioctl(4, LOOP_CLR_FD) = 0 [pid 5727] close(4) = 0 [ 160.778794][ T5727] loop0: detected capacity change from 0 to 2048 [ 160.793883][ T5728] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 160.814499][ T5727] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5727] creat("./file2", 040) = 4 [pid 5727] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5727] exit_group(0) = ? [pid 5727] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5727, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./347", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./347", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./347/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./347/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./347/binderfs") = 0 [ 160.825513][ T5727] Remounting filesystem read-only [ 160.830685][ T5727] NILFS (loop0): error -5 truncating bmap (ino=16) [ 160.838210][ T5727] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 160.848268][ T5727] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 160.857483][ T5727] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./347/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./347/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./347/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./347/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./347/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./347/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./347") = 0 mkdir("./348", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 160.877065][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 160.884126][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 160.892097][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 160.900989][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 160.910327][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 160.919708][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5729 ./strace-static-x86_64: Process 5729 attached [pid 5729] set_robust_list(0x555556375660, 24) = 0 [pid 5729] chdir("./348") = 0 [pid 5729] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5729] setpgid(0, 0) = 0 [pid 5729] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5729] write(3, "1000", 4) = 4 [pid 5729] close(3) = 0 [pid 5729] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5729] memfd_create("syzkaller", 0) = 3 [pid 5729] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5729] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5729] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5729] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5729] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5729] close(3) = 0 [pid 5729] mkdir("./file0", 0777) = 0 [pid 5729] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5729] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5729] chdir("./file0") = 0 [pid 5729] ioctl(4, LOOP_CLR_FD) = 0 [pid 5729] close(4) = 0 [ 160.991751][ T5729] loop0: detected capacity change from 0 to 2048 [ 161.007903][ T5730] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 161.025478][ T5729] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 161.035698][ T5729] Remounting filesystem read-only [pid 5729] creat("./file2", 040) = 4 [pid 5729] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5729] exit_group(0) = ? [pid 5729] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5729, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./348", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./348", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./348/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./348/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./348/binderfs") = 0 [ 161.040925][ T5729] NILFS (loop0): error -5 truncating bmap (ino=16) [ 161.049131][ T5729] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 161.059196][ T5729] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 161.068660][ T5729] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./348/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./348/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./348/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./348/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./348/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./348/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./348") = 0 mkdir("./349", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5731 attached [pid 5731] set_robust_list(0x555556375660, 24) = 0 [pid 5731] chdir("./349") = 0 [pid 5731] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5731] setpgid(0, 0) = 0 [ 161.085884][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 161.092933][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 161.100235][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 161.109992][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 161.119293][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 161.128615][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5731] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5024] <... clone resumed>, child_tidptr=0x555556375650) = 5731 [pid 5731] <... openat resumed>) = 3 [pid 5731] write(3, "1000", 4) = 4 [pid 5731] close(3) = 0 [pid 5731] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5731] memfd_create("syzkaller", 0) = 3 [pid 5731] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5731] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5731] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5731] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5731] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5731] close(3) = 0 [pid 5731] mkdir("./file0", 0777) = 0 [pid 5731] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5731] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5731] chdir("./file0") = 0 [pid 5731] ioctl(4, LOOP_CLR_FD) = 0 [pid 5731] close(4) = 0 [ 161.201678][ T5731] loop0: detected capacity change from 0 to 2048 [ 161.218715][ T5732] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 161.233391][ T5731] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 161.243879][ T5731] Remounting filesystem read-only [pid 5731] creat("./file2", 040) = 4 [pid 5731] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5731] exit_group(0) = ? [pid 5731] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5731, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./349", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./349", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./349/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./349/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./349/binderfs") = 0 [ 161.249041][ T5731] NILFS (loop0): error -5 truncating bmap (ino=16) [ 161.257423][ T5731] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 161.267678][ T5731] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 161.277300][ T5731] NILFS (loop0): error -5 truncating bmap (ino=16) [ 161.293716][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./349/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./349/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./349/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./349/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./349/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./349/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./349") = 0 mkdir("./350", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5733 ./strace-static-x86_64: Process 5733 attached [pid 5733] set_robust_list(0x555556375660, 24) = 0 [pid 5733] chdir("./350") = 0 [pid 5733] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5733] setpgid(0, 0) = 0 [pid 5733] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5733] write(3, "1000", 4) = 4 [pid 5733] close(3) = 0 [ 161.301874][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 161.309220][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 161.318563][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 161.328947][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 161.338343][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5733] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5733] memfd_create("syzkaller", 0) = 3 [pid 5733] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5733] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5733] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5733] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5733] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5733] close(3) = 0 [pid 5733] mkdir("./file0", 0777) = 0 [pid 5733] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5733] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5733] chdir("./file0") = 0 [pid 5733] ioctl(4, LOOP_CLR_FD) = 0 [pid 5733] close(4) = 0 [pid 5733] creat("./file2", 040) = 4 [ 161.411842][ T5733] loop0: detected capacity change from 0 to 2048 [ 161.428208][ T5734] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 161.437831][ T5733] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 161.449020][ T5733] Remounting filesystem read-only [ 161.454284][ T5733] NILFS (loop0): error -5 truncating bmap (ino=16) [pid 5733] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5733] exit_group(0) = ? [pid 5733] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5733, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./350", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./350", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./350/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./350/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./350/binderfs") = 0 [ 161.473342][ T5733] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 161.483664][ T5733] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 161.492909][ T5733] NILFS (loop0): error -5 truncating bmap (ino=16) [ 161.512501][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./350/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./350/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./350/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./350/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./350/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./350/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./350") = 0 mkdir("./351", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5735 ./strace-static-x86_64: Process 5735 attached [pid 5735] set_robust_list(0x555556375660, 24) = 0 [pid 5735] chdir("./351") = 0 [pid 5735] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5735] setpgid(0, 0) = 0 [pid 5735] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5735] write(3, "1000", 4) = 4 [pid 5735] close(3) = 0 [pid 5735] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5735] memfd_create("syzkaller", 0) = 3 [pid 5735] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 161.519523][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 161.527200][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 161.536229][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 161.545250][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 161.555096][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5735] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5735] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5735] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5735] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5735] close(3) = 0 [pid 5735] mkdir("./file0", 0777) = 0 [pid 5735] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5735] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5735] chdir("./file0") = 0 [pid 5735] ioctl(4, LOOP_CLR_FD) = 0 [pid 5735] close(4) = 0 [ 161.625175][ T5735] loop0: detected capacity change from 0 to 2048 [ 161.650277][ T5736] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 161.656533][ T5735] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5735] creat("./file2", 040) = 4 [pid 5735] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5735] exit_group(0) = ? [pid 5735] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5735, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./351", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./351", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./351/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./351/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./351/binderfs") = 0 [ 161.670749][ T5735] Remounting filesystem read-only [ 161.676101][ T5735] NILFS (loop0): error -5 truncating bmap (ino=16) [ 161.683704][ T5735] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 161.693858][ T5735] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 161.703385][ T5735] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./351/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./351/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./351/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./351/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./351/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./351/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./351") = 0 mkdir("./352", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5737 ./strace-static-x86_64: Process 5737 attached [pid 5737] set_robust_list(0x555556375660, 24) = 0 [pid 5737] chdir("./352") = 0 [pid 5737] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5737] setpgid(0, 0) = 0 [pid 5737] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5737] write(3, "1000", 4) = 4 [pid 5737] close(3) = 0 [pid 5737] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5737] memfd_create("syzkaller", 0) = 3 [pid 5737] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 161.720487][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 161.727591][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 161.735170][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 161.744444][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 161.753691][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 161.763225][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5737] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5737] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5737] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5737] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5737] close(3) = 0 [pid 5737] mkdir("./file0", 0777) = 0 [pid 5737] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5737] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5737] chdir("./file0") = 0 [pid 5737] ioctl(4, LOOP_CLR_FD) = 0 [pid 5737] close(4) = 0 [pid 5737] creat("./file2", 040) = 4 [ 161.822091][ T5737] loop0: detected capacity change from 0 to 2048 [ 161.838024][ T5738] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 161.844444][ T5737] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 161.859608][ T5737] Remounting filesystem read-only [ 161.865371][ T5737] NILFS (loop0): error -5 truncating bmap (ino=16) [pid 5737] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5737] exit_group(0) = ? [pid 5737] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5737, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./352", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./352", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./352/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./352/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./352/binderfs") = 0 [ 161.873460][ T5737] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 161.883905][ T5737] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 161.893459][ T5737] NILFS (loop0): error -5 truncating bmap (ino=16) [ 161.908861][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 161.916036][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 umount2("./352/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./352/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./352/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./352/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./352/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./352/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./352") = 0 mkdir("./353", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5739 ./strace-static-x86_64: Process 5739 attached [pid 5739] set_robust_list(0x555556375660, 24) = 0 [pid 5739] chdir("./353") = 0 [pid 5739] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5739] setpgid(0, 0) = 0 [pid 5739] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5739] write(3, "1000", 4) = 4 [pid 5739] close(3) = 0 [pid 5739] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5739] memfd_create("syzkaller", 0) = 3 [pid 5739] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 161.923643][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 161.932670][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 161.942025][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 161.951107][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5739] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5739] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5739] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5739] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5739] close(3) = 0 [pid 5739] mkdir("./file0", 0777) = 0 [pid 5739] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5739] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5739] chdir("./file0") = 0 [pid 5739] ioctl(4, LOOP_CLR_FD) = 0 [pid 5739] close(4) = 0 [ 162.014165][ T5739] loop0: detected capacity change from 0 to 2048 [ 162.032269][ T5740] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 162.054529][ T5739] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5739] creat("./file2", 040) = 4 [pid 5739] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5739] exit_group(0) = ? [pid 5739] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5739, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./353", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./353", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./353/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./353/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./353/binderfs") = 0 [ 162.064793][ T5739] Remounting filesystem read-only [ 162.069959][ T5739] NILFS (loop0): error -5 truncating bmap (ino=16) [ 162.078347][ T5739] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 162.088573][ T5739] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 162.098056][ T5739] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./353/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./353/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./353/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./353/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./353/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./353/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./353") = 0 mkdir("./354", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5741 [ 162.114130][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 162.121226][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 162.128859][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 162.137849][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 162.146938][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 162.156112][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer ./strace-static-x86_64: Process 5741 attached [pid 5741] set_robust_list(0x555556375660, 24) = 0 [pid 5741] chdir("./354") = 0 [pid 5741] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5741] setpgid(0, 0) = 0 [pid 5741] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5741] write(3, "1000", 4) = 4 [pid 5741] close(3) = 0 [pid 5741] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5741] memfd_create("syzkaller", 0) = 3 [pid 5741] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5741] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5741] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5741] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5741] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5741] close(3) = 0 [pid 5741] mkdir("./file0", 0777) = 0 [pid 5741] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5741] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5741] chdir("./file0") = 0 [pid 5741] ioctl(4, LOOP_CLR_FD) = 0 [pid 5741] close(4) = 0 [ 162.232734][ T5741] loop0: detected capacity change from 0 to 2048 [ 162.247440][ T5742] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 162.263427][ T5741] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 162.273784][ T5741] Remounting filesystem read-only [pid 5741] creat("./file2", 040) = 4 [pid 5741] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5741] exit_group(0) = ? [pid 5741] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5741, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./354", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./354", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./354/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./354/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./354/binderfs") = 0 [ 162.282079][ T5741] NILFS (loop0): error -5 truncating bmap (ino=16) [ 162.289847][ T5741] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 162.300307][ T5741] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 162.309821][ T5741] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./354/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./354/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./354/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./354/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./354/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./354/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./354") = 0 mkdir("./355", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5743 ./strace-static-x86_64: Process 5743 attached [pid 5743] set_robust_list(0x555556375660, 24) = 0 [pid 5743] chdir("./355") = 0 [pid 5743] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [ 162.326634][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 162.333673][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 162.340994][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 162.350819][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 162.359864][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 162.369076][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5743] setpgid(0, 0) = 0 [pid 5743] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5743] write(3, "1000", 4) = 4 [pid 5743] close(3) = 0 [pid 5743] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5743] memfd_create("syzkaller", 0) = 3 [pid 5743] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5743] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5743] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5743] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5743] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5743] close(3) = 0 [pid 5743] mkdir("./file0", 0777) = 0 [pid 5743] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5743] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5743] chdir("./file0") = 0 [pid 5743] ioctl(4, LOOP_CLR_FD) = 0 [pid 5743] close(4) = 0 [ 162.442554][ T5743] loop0: detected capacity change from 0 to 2048 [ 162.459077][ T5744] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 162.465444][ T5743] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 162.479610][ T5743] Remounting filesystem read-only [pid 5743] creat("./file2", 040) = 4 [pid 5743] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5743] exit_group(0) = ? [pid 5743] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5743, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./355", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./355", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./355/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./355/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./355/binderfs") = 0 [ 162.491864][ T5743] NILFS (loop0): error -5 truncating bmap (ino=16) [ 162.499779][ T5743] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 162.509764][ T5743] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 162.519848][ T5743] NILFS (loop0): error -5 truncating bmap (ino=16) [ 162.535259][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./355/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./355/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./355/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./355/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./355/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./355/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./355") = 0 mkdir("./356", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5745 ./strace-static-x86_64: Process 5745 attached [pid 5745] set_robust_list(0x555556375660, 24) = 0 [pid 5745] chdir("./356") = 0 [pid 5745] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5745] setpgid(0, 0) = 0 [pid 5745] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5745] write(3, "1000", 4) = 4 [pid 5745] close(3) = 0 [pid 5745] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5745] memfd_create("syzkaller", 0) = 3 [pid 5745] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 162.542407][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 162.549798][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 162.558798][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 162.567879][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 162.577620][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5745] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5745] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5745] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5745] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5745] close(3) = 0 [pid 5745] mkdir("./file0", 0777) = 0 [pid 5745] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5745] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5745] chdir("./file0") = 0 [pid 5745] ioctl(4, LOOP_CLR_FD) = 0 [pid 5745] close(4) = 0 [pid 5745] creat("./file2", 040) = 4 [ 162.634307][ T5745] loop0: detected capacity change from 0 to 2048 [ 162.650941][ T5746] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 162.657805][ T5745] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 162.671642][ T5745] Remounting filesystem read-only [ 162.677222][ T5745] NILFS (loop0): error -5 truncating bmap (ino=16) [pid 5745] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5745] exit_group(0) = ? [pid 5745] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5745, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./356", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./356", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./356/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./356/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./356/binderfs") = 0 [ 162.685120][ T5745] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 162.695268][ T5745] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 162.705110][ T5745] NILFS (loop0): error -5 truncating bmap (ino=16) [ 162.720533][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 162.727639][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 umount2("./356/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./356/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./356/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./356/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./356/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./356/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./356") = 0 mkdir("./357", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5747 ./strace-static-x86_64: Process 5747 attached [pid 5747] set_robust_list(0x555556375660, 24) = 0 [pid 5747] chdir("./357") = 0 [pid 5747] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5747] setpgid(0, 0) = 0 [pid 5747] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5747] write(3, "1000", 4) = 4 [pid 5747] close(3) = 0 [pid 5747] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5747] memfd_create("syzkaller", 0) = 3 [pid 5747] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 162.735016][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 162.744149][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 162.753522][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 162.762924][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5747] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5747] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5747] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5747] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5747] close(3) = 0 [pid 5747] mkdir("./file0", 0777) = 0 [pid 5747] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5747] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5747] chdir("./file0") = 0 [pid 5747] ioctl(4, LOOP_CLR_FD) = 0 [pid 5747] close(4) = 0 [ 162.832029][ T5747] loop0: detected capacity change from 0 to 2048 [ 162.847942][ T5748] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 162.858126][ T5747] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 162.869184][ T5747] Remounting filesystem read-only [ 162.875516][ T5747] NILFS (loop0): error -5 truncating bmap (ino=16) [pid 5747] creat("./file2", 040) = 4 [pid 5747] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5747] exit_group(0) = ? [pid 5747] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5747, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./357", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./357", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./357/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./357/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./357/binderfs") = 0 [ 162.885024][ T5747] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 162.895385][ T5747] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 162.905402][ T5747] NILFS (loop0): error -5 truncating bmap (ino=16) [ 162.919934][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 162.927340][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 umount2("./357/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./357/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./357/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./357/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./357/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./357/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./357") = 0 mkdir("./358", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5749 ./strace-static-x86_64: Process 5749 attached [pid 5749] set_robust_list(0x555556375660, 24) = 0 [pid 5749] chdir("./358") = 0 [pid 5749] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5749] setpgid(0, 0) = 0 [pid 5749] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5749] write(3, "1000", 4) = 4 [pid 5749] close(3) = 0 [pid 5749] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5749] memfd_create("syzkaller", 0) = 3 [pid 5749] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 162.934763][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 162.943687][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 162.952619][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 162.961750][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5749] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5749] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5749] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5749] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5749] close(3) = 0 [pid 5749] mkdir("./file0", 0777) = 0 [pid 5749] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5749] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5749] chdir("./file0") = 0 [pid 5749] ioctl(4, LOOP_CLR_FD) = 0 [pid 5749] close(4) = 0 [ 163.027207][ T5749] loop0: detected capacity change from 0 to 2048 [ 163.042884][ T5750] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 163.057109][ T5749] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 163.067723][ T5749] Remounting filesystem read-only [pid 5749] creat("./file2", 040) = 4 [pid 5749] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5749] exit_group(0) = ? [pid 5749] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5749, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./358", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./358", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./358/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./358/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./358/binderfs") = 0 [ 163.073714][ T5749] NILFS (loop0): error -5 truncating bmap (ino=16) [ 163.082651][ T5749] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 163.093223][ T5749] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 163.102800][ T5749] NILFS (loop0): error -5 truncating bmap (ino=16) [ 163.118947][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./358/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./358/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./358/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./358/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./358/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./358/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./358") = 0 mkdir("./359", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5751 ./strace-static-x86_64: Process 5751 attached [pid 5751] set_robust_list(0x555556375660, 24) = 0 [pid 5751] chdir("./359") = 0 [pid 5751] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5751] setpgid(0, 0) = 0 [pid 5751] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5751] write(3, "1000", 4) = 4 [pid 5751] close(3) = 0 [pid 5751] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5751] memfd_create("syzkaller", 0) = 3 [pid 5751] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 163.126025][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 163.133449][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 163.142417][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 163.151278][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 163.160476][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5751] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5751] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5751] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5751] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5751] close(3) = 0 [pid 5751] mkdir("./file0", 0777) = 0 [pid 5751] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5751] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5751] chdir("./file0") = 0 [pid 5751] ioctl(4, LOOP_CLR_FD) = 0 [pid 5751] close(4) = 0 [ 163.226238][ T5751] loop0: detected capacity change from 0 to 2048 [ 163.242187][ T5752] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 163.255005][ T5751] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 163.264958][ T5751] Remounting filesystem read-only [pid 5751] creat("./file2", 040) = 4 [pid 5751] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5751] exit_group(0) = ? [pid 5751] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5751, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./359", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./359", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./359/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./359/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./359/binderfs") = 0 [ 163.272221][ T5751] NILFS (loop0): error -5 truncating bmap (ino=16) [ 163.281004][ T5751] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 163.291581][ T5751] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 163.301218][ T5751] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./359/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./359/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./359/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./359/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./359/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./359/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./359") = 0 mkdir("./360", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 163.319689][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 163.327764][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 163.335133][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 163.344084][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 163.353007][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 163.362105][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5753 ./strace-static-x86_64: Process 5753 attached [pid 5753] set_robust_list(0x555556375660, 24) = 0 [pid 5753] chdir("./360") = 0 [pid 5753] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5753] setpgid(0, 0) = 0 [pid 5753] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5753] write(3, "1000", 4) = 4 [pid 5753] close(3) = 0 [pid 5753] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5753] memfd_create("syzkaller", 0) = 3 [pid 5753] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5753] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5753] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5753] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5753] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5753] close(3) = 0 [pid 5753] mkdir("./file0", 0777) = 0 [pid 5753] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5753] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5753] chdir("./file0") = 0 [pid 5753] ioctl(4, LOOP_CLR_FD) = 0 [pid 5753] close(4) = 0 [ 163.450927][ T5753] loop0: detected capacity change from 0 to 2048 [ 163.468231][ T5754] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 163.483999][ T5753] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5753] creat("./file2", 040) = 4 [pid 5753] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5753] exit_group(0) = ? [pid 5753] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5753, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./360", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./360", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./360/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./360/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./360/binderfs") = 0 [ 163.496784][ T5753] Remounting filesystem read-only [ 163.503397][ T5753] NILFS (loop0): error -5 truncating bmap (ino=16) [ 163.512755][ T5753] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 163.523171][ T5753] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 163.532779][ T5753] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./360/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./360/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./360/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./360/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./360/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./360/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./360") = 0 mkdir("./361", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5755 ./strace-static-x86_64: Process 5755 attached [ 163.547560][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 163.554755][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 163.562513][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 163.571488][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 163.580473][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 163.589745][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5755] set_robust_list(0x555556375660, 24) = 0 [pid 5755] chdir("./361") = 0 [pid 5755] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5755] setpgid(0, 0) = 0 [pid 5755] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5755] write(3, "1000", 4) = 4 [pid 5755] close(3) = 0 [pid 5755] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5755] memfd_create("syzkaller", 0) = 3 [pid 5755] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5755] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5755] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5755] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5755] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5755] close(3) = 0 [pid 5755] mkdir("./file0", 0777) = 0 [pid 5755] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5755] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5755] chdir("./file0") = 0 [pid 5755] ioctl(4, LOOP_CLR_FD) = 0 [pid 5755] close(4) = 0 [ 163.665415][ T5755] loop0: detected capacity change from 0 to 2048 [ 163.682475][ T5756] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 163.697003][ T5755] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 163.707716][ T5755] Remounting filesystem read-only [pid 5755] creat("./file2", 040) = 4 [pid 5755] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5755] exit_group(0) = ? [pid 5755] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5755, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./361", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./361", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./361/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./361/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./361/binderfs") = 0 [ 163.713049][ T5755] NILFS (loop0): error -5 truncating bmap (ino=16) [ 163.722140][ T5755] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 163.732469][ T5755] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 163.741785][ T5755] NILFS (loop0): error -5 truncating bmap (ino=16) [ 163.758423][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./361/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./361/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./361/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./361/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./361/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./361/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./361") = 0 mkdir("./362", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5757 ./strace-static-x86_64: Process 5757 attached [pid 5757] set_robust_list(0x555556375660, 24) = 0 [pid 5757] chdir("./362") = 0 [pid 5757] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5757] setpgid(0, 0) = 0 [pid 5757] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5757] write(3, "1000", 4) = 4 [pid 5757] close(3) = 0 [pid 5757] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5757] memfd_create("syzkaller", 0) = 3 [pid 5757] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 163.765571][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 163.773257][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 163.782909][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 163.792213][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 163.802864][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5757] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5757] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5757] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5757] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5757] close(3) = 0 [pid 5757] mkdir("./file0", 0777) = 0 [pid 5757] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5757] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5757] chdir("./file0") = 0 [pid 5757] ioctl(4, LOOP_CLR_FD) = 0 [pid 5757] close(4) = 0 [ 163.863011][ T5757] loop0: detected capacity change from 0 to 2048 [ 163.879041][ T5758] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 163.897836][ T5757] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5757] creat("./file2", 040) = 4 [pid 5757] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5757] exit_group(0) = ? [pid 5757] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5757, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./362", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./362", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./362/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./362/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./362/binderfs") = 0 [ 163.908679][ T5757] Remounting filesystem read-only [ 163.914084][ T5757] NILFS (loop0): error -5 truncating bmap (ino=16) [ 163.922798][ T5757] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 163.932730][ T5757] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 163.942367][ T5757] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./362/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./362/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./362/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./362/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./362/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./362/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./362") = 0 mkdir("./363", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 163.958763][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 163.966172][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 163.973671][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 163.983122][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 163.992096][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 164.001918][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5759 ./strace-static-x86_64: Process 5759 attached [pid 5759] set_robust_list(0x555556375660, 24) = 0 [pid 5759] chdir("./363") = 0 [pid 5759] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5759] setpgid(0, 0) = 0 [pid 5759] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5759] write(3, "1000", 4) = 4 [pid 5759] close(3) = 0 [pid 5759] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5759] memfd_create("syzkaller", 0) = 3 [pid 5759] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5759] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5759] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5759] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5759] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5759] close(3) = 0 [pid 5759] mkdir("./file0", 0777) = 0 [pid 5759] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5759] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5759] chdir("./file0") = 0 [pid 5759] ioctl(4, LOOP_CLR_FD) = 0 [pid 5759] close(4) = 0 [ 164.074553][ T5759] loop0: detected capacity change from 0 to 2048 [ 164.090321][ T5760] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 164.113591][ T5759] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5759] creat("./file2", 040) = 4 [pid 5759] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5759] exit_group(0) = ? [pid 5759] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5759, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./363", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./363", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./363/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./363/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./363/binderfs") = 0 [ 164.125391][ T5759] Remounting filesystem read-only [ 164.133192][ T5759] NILFS (loop0): error -5 truncating bmap (ino=16) [ 164.140891][ T5759] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 164.151910][ T5759] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 164.164023][ T5759] NILFS (loop0): error -5 truncating bmap (ino=16) [ 164.183059][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 164.190228][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 164.198012][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 164.207245][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 164.216546][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./363/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./363/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./363/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./363/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./363/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./363/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./363") = 0 mkdir("./364", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5761 ./strace-static-x86_64: Process 5761 attached [pid 5761] set_robust_list(0x555556375660, 24) = 0 [pid 5761] chdir("./364") = 0 [pid 5761] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5761] setpgid(0, 0) = 0 [pid 5761] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5761] write(3, "1000", 4) = 4 [pid 5761] close(3) = 0 [pid 5761] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5761] memfd_create("syzkaller", 0) = 3 [pid 5761] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 164.226676][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5761] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5761] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5761] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5761] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5761] close(3) = 0 [pid 5761] mkdir("./file0", 0777) = 0 [pid 5761] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5761] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5761] chdir("./file0") = 0 [pid 5761] ioctl(4, LOOP_CLR_FD) = 0 [pid 5761] close(4) = 0 [ 164.289241][ T5761] loop0: detected capacity change from 0 to 2048 [ 164.305867][ T5762] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5761] creat("./file2", 040) = 4 [ 164.336400][ T5761] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 164.346826][ T5761] Remounting filesystem read-only [ 164.352252][ T5761] NILFS (loop0): error -5 truncating bmap (ino=16) [ 164.370940][ T5761] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [pid 5761] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5761] exit_group(0) = ? [pid 5761] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5761, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- umount2("./364", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./364", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./364/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./364/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./364/binderfs") = 0 [ 164.382141][ T5761] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 164.391483][ T5761] NILFS (loop0): error -5 truncating bmap (ino=16) [ 164.406228][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 164.413495][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 164.420856][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 164.429904][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./364/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./364/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./364/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./364/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./364/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./364/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./364") = 0 mkdir("./365", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 164.438913][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 164.448654][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5763 ./strace-static-x86_64: Process 5763 attached [pid 5763] set_robust_list(0x555556375660, 24) = 0 [pid 5763] chdir("./365") = 0 [pid 5763] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5763] setpgid(0, 0) = 0 [pid 5763] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5763] write(3, "1000", 4) = 4 [pid 5763] close(3) = 0 [pid 5763] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5763] memfd_create("syzkaller", 0) = 3 [pid 5763] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5763] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5763] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5763] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5763] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5763] close(3) = 0 [pid 5763] mkdir("./file0", 0777) = 0 [pid 5763] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5763] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5763] chdir("./file0") = 0 [pid 5763] ioctl(4, LOOP_CLR_FD) = 0 [pid 5763] close(4) = 0 [ 164.523551][ T5763] loop0: detected capacity change from 0 to 2048 [ 164.539998][ T5764] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 164.547233][ T5763] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 164.564249][ T5763] Remounting filesystem read-only [pid 5763] creat("./file2", 040) = 4 [pid 5763] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5763] exit_group(0) = ? [pid 5763] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5763, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./365", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./365", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./365/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./365/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./365/binderfs") = 0 [ 164.570565][ T5763] NILFS (loop0): error -5 truncating bmap (ino=16) [ 164.579136][ T5763] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 164.589644][ T5763] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 164.599182][ T5763] NILFS (loop0): error -5 truncating bmap (ino=16) [ 164.617117][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./365/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./365/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./365/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./365/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./365/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 [ 164.624362][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 164.631830][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 164.640996][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 164.649943][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 164.659178][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer rmdir("./365/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./365") = 0 mkdir("./366", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5765 ./strace-static-x86_64: Process 5765 attached [pid 5765] set_robust_list(0x555556375660, 24) = 0 [pid 5765] chdir("./366") = 0 [pid 5765] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5765] setpgid(0, 0) = 0 [pid 5765] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5765] write(3, "1000", 4) = 4 [pid 5765] close(3) = 0 [pid 5765] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5765] memfd_create("syzkaller", 0) = 3 [pid 5765] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5765] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5765] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5765] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5765] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5765] close(3) = 0 [pid 5765] mkdir("./file0", 0777) = 0 [pid 5765] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5765] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5765] chdir("./file0") = 0 [pid 5765] ioctl(4, LOOP_CLR_FD) = 0 [pid 5765] close(4) = 0 [ 164.801034][ T5765] loop0: detected capacity change from 0 to 2048 [ 164.817326][ T5766] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 164.828521][ T5765] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 164.839094][ T5765] Remounting filesystem read-only [pid 5765] creat("./file2", 040) = 4 [pid 5765] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5765] exit_group(0) = ? [pid 5765] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5765, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./366", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./366", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./366/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./366/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./366/binderfs") = 0 [ 164.845295][ T5765] NILFS (loop0): error -5 truncating bmap (ino=16) [ 164.853107][ T5765] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 164.863894][ T5765] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 164.873445][ T5765] NILFS (loop0): error -5 truncating bmap (ino=16) [ 164.891135][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./366/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./366/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./366/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./366/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./366/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./366/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./366") = 0 mkdir("./367", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5767 ./strace-static-x86_64: Process 5767 attached [pid 5767] set_robust_list(0x555556375660, 24) = 0 [pid 5767] chdir("./367") = 0 [pid 5767] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [ 164.898744][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 164.907103][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 164.916467][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 164.925989][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 164.935481][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5767] setpgid(0, 0) = 0 [pid 5767] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5767] write(3, "1000", 4) = 4 [pid 5767] close(3) = 0 [pid 5767] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5767] memfd_create("syzkaller", 0) = 3 [pid 5767] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5767] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5767] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5767] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5767] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5767] close(3) = 0 [pid 5767] mkdir("./file0", 0777) = 0 [pid 5767] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5767] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5767] chdir("./file0") = 0 [pid 5767] ioctl(4, LOOP_CLR_FD) = 0 [pid 5767] close(4) = 0 [ 165.026412][ T5767] loop0: detected capacity change from 0 to 2048 [ 165.044531][ T5768] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 165.059441][ T5767] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 165.070150][ T5767] Remounting filesystem read-only [pid 5767] creat("./file2", 040) = 4 [pid 5767] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5767] exit_group(0) = ? [pid 5767] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5767, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./367", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./367", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./367/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./367/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./367/binderfs") = 0 [ 165.075749][ T5767] NILFS (loop0): error -5 truncating bmap (ino=16) [ 165.085034][ T5767] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 165.095763][ T5767] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 165.105686][ T5767] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./367/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./367/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./367/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./367/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./367/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./367/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./367") = 0 mkdir("./368", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5769 ./strace-static-x86_64: Process 5769 attached [pid 5769] set_robust_list(0x555556375660, 24) = 0 [pid 5769] chdir("./368") = 0 [pid 5769] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5769] setpgid(0, 0) = 0 [ 165.123176][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 165.130443][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 165.138113][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 165.147529][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 165.157282][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 165.166570][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5769] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5769] write(3, "1000", 4) = 4 [pid 5769] close(3) = 0 [pid 5769] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5769] memfd_create("syzkaller", 0) = 3 [pid 5769] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5769] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5769] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5769] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5769] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5769] close(3) = 0 [pid 5769] mkdir("./file0", 0777) = 0 [pid 5769] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5769] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5769] chdir("./file0") = 0 [pid 5769] ioctl(4, LOOP_CLR_FD) = 0 [pid 5769] close(4) = 0 [ 165.236975][ T5769] loop0: detected capacity change from 0 to 2048 [ 165.253922][ T5770] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 165.268707][ T5769] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 165.279963][ T5769] Remounting filesystem read-only [pid 5769] creat("./file2", 040) = 4 [pid 5769] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5769] exit_group(0) = ? [pid 5769] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5769, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./368", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./368", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./368/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./368/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./368/binderfs") = 0 [ 165.286449][ T5769] NILFS (loop0): error -5 truncating bmap (ino=16) [ 165.295098][ T5769] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 165.305484][ T5769] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 165.315593][ T5769] NILFS (loop0): error -5 truncating bmap (ino=16) [ 165.336402][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 165.343772][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 165.351294][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 165.360410][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 165.369903][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./368/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./368/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./368/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./368/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./368/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./368/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./368") = 0 mkdir("./369", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5771 ./strace-static-x86_64: Process 5771 attached [pid 5771] set_robust_list(0x555556375660, 24) = 0 [pid 5771] chdir("./369") = 0 [ 165.379283][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5771] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5771] setpgid(0, 0) = 0 [pid 5771] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5771] write(3, "1000", 4) = 4 [pid 5771] close(3) = 0 [pid 5771] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5771] memfd_create("syzkaller", 0) = 3 [pid 5771] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5771] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5771] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5771] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5771] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5771] close(3) = 0 [pid 5771] mkdir("./file0", 0777) = 0 [pid 5771] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5771] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5771] chdir("./file0") = 0 [pid 5771] ioctl(4, LOOP_CLR_FD) = 0 [pid 5771] close(4) = 0 [ 165.461790][ T5771] loop0: detected capacity change from 0 to 2048 [ 165.477620][ T5772] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 165.493809][ T5771] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 165.505461][ T5771] Remounting filesystem read-only [pid 5771] creat("./file2", 040) = 4 [pid 5771] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5771] exit_group(0) = ? [pid 5771] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5771, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./369", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./369", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./369/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./369/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./369/binderfs") = 0 [ 165.511278][ T5771] NILFS (loop0): error -5 truncating bmap (ino=16) [ 165.521107][ T5771] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 165.531907][ T5771] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 165.541154][ T5771] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./369/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./369/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./369/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./369/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./369/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./369/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./369") = 0 mkdir("./370", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 [ 165.557952][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 165.565359][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 165.573118][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 165.582674][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 165.592004][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 165.602009][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5773 ./strace-static-x86_64: Process 5773 attached [pid 5773] set_robust_list(0x555556375660, 24) = 0 [pid 5773] chdir("./370") = 0 [pid 5773] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5773] setpgid(0, 0) = 0 [pid 5773] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5773] write(3, "1000", 4) = 4 [pid 5773] close(3) = 0 [pid 5773] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5773] memfd_create("syzkaller", 0) = 3 [pid 5773] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5773] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5773] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5773] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5773] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5773] close(3) = 0 [pid 5773] mkdir("./file0", 0777) = 0 [pid 5773] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5773] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5773] chdir("./file0") = 0 [pid 5773] ioctl(4, LOOP_CLR_FD) = 0 [pid 5773] close(4) = 0 [ 165.682733][ T5773] loop0: detected capacity change from 0 to 2048 [ 165.697487][ T5774] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 165.709834][ T5773] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 165.720791][ T5773] Remounting filesystem read-only [pid 5773] creat("./file2", 040) = 4 [pid 5773] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5773] exit_group(0) = ? [pid 5773] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5773, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./370", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./370", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./370/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./370/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./370/binderfs") = 0 [ 165.727312][ T5773] NILFS (loop0): error -5 truncating bmap (ino=16) [ 165.737105][ T5773] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 165.748321][ T5773] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 165.758032][ T5773] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./370/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./370/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./370/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./370/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./370/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./370/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./370") = 0 mkdir("./371", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5775 ./strace-static-x86_64: Process 5775 attached [ 165.776943][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 165.784365][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 165.792177][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 165.801755][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 165.811223][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 165.821886][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5775] set_robust_list(0x555556375660, 24) = 0 [pid 5775] chdir("./371") = 0 [pid 5775] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5775] setpgid(0, 0) = 0 [pid 5775] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5775] write(3, "1000", 4) = 4 [pid 5775] close(3) = 0 [pid 5775] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5775] memfd_create("syzkaller", 0) = 3 [pid 5775] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5775] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5775] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5775] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5775] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5775] close(3) = 0 [pid 5775] mkdir("./file0", 0777) = 0 [pid 5775] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5775] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5775] chdir("./file0") = 0 [pid 5775] ioctl(4, LOOP_CLR_FD) = 0 [pid 5775] close(4) = 0 [ 165.896747][ T5775] loop0: detected capacity change from 0 to 2048 [ 165.914105][ T5776] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5775] creat("./file2", 040) = 4 [ 165.942183][ T5775] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 165.959740][ T5775] Remounting filesystem read-only [ 165.964896][ T5775] NILFS (loop0): error -5 truncating bmap (ino=16) [ 165.973058][ T5775] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 165.983114][ T5775] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5775] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5775] exit_group(0) = ? [pid 5775] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5775, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./371", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./371", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./371/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./371/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./371/binderfs") = 0 [ 165.992851][ T5775] NILFS (loop0): error -5 truncating bmap (ino=16) [ 166.009453][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 166.018092][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 166.026902][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 166.036116][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./371/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./371/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./371/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./371/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./371/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./371/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./371") = 0 mkdir("./372", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5777 ./strace-static-x86_64: Process 5777 attached [pid 5777] set_robust_list(0x555556375660, 24) = 0 [pid 5777] chdir("./372") = 0 [pid 5777] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5777] setpgid(0, 0) = 0 [pid 5777] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5777] write(3, "1000", 4) = 4 [pid 5777] close(3) = 0 [pid 5777] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5777] memfd_create("syzkaller", 0) = 3 [pid 5777] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 166.045258][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 166.054796][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5777] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5777] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5777] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5777] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5777] close(3) = 0 [pid 5777] mkdir("./file0", 0777) = 0 [pid 5777] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5777] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5777] chdir("./file0") = 0 [pid 5777] ioctl(4, LOOP_CLR_FD) = 0 [pid 5777] close(4) = 0 [ 166.130427][ T5777] loop0: detected capacity change from 0 to 2048 [ 166.148142][ T5778] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5777] creat("./file2", 040) = 4 [pid 5777] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5777] exit_group(0) = ? [pid 5777] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5777, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./372", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./372", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./372/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./372/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./372/binderfs") = 0 [ 166.173195][ T5777] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 166.183987][ T5777] Remounting filesystem read-only [ 166.189266][ T5777] NILFS (loop0): error -5 truncating bmap (ino=16) [ 166.199013][ T5777] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 166.209613][ T5777] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 166.219276][ T5777] NILFS (loop0): error -5 truncating bmap (ino=16) [ 166.240650][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 166.247829][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 166.255319][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 166.264571][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 166.273528][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./372/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./372/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./372/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./372/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./372/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./372/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./372") = 0 mkdir("./373", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5779 ./strace-static-x86_64: Process 5779 attached [pid 5779] set_robust_list(0x555556375660, 24) = 0 [pid 5779] chdir("./373") = 0 [pid 5779] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [ 166.282700][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5779] setpgid(0, 0) = 0 [pid 5779] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5779] write(3, "1000", 4) = 4 [pid 5779] close(3) = 0 [pid 5779] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5779] memfd_create("syzkaller", 0) = 3 [pid 5779] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5779] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5779] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5779] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5779] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5779] close(3) = 0 [pid 5779] mkdir("./file0", 0777) = 0 [pid 5779] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5779] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5779] chdir("./file0") = 0 [pid 5779] ioctl(4, LOOP_CLR_FD) = 0 [pid 5779] close(4) = 0 [ 166.361315][ T5779] loop0: detected capacity change from 0 to 2048 [ 166.377624][ T5780] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5779] creat("./file2", 040) = 4 [pid 5779] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5779] exit_group(0) = ? [pid 5779] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5779, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./373", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./373", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./373/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./373/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./373/binderfs") = 0 [ 166.405853][ T5779] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 166.416518][ T5779] Remounting filesystem read-only [ 166.422049][ T5779] NILFS (loop0): error -5 truncating bmap (ino=16) [ 166.430142][ T5779] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 166.440264][ T5779] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 166.449648][ T5779] NILFS (loop0): error -5 truncating bmap (ino=16) [ 166.464368][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 166.471368][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 166.478820][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 166.488332][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 166.498101][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./373/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./373/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./373/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./373/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./373/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./373/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./373") = 0 mkdir("./374", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5781 ./strace-static-x86_64: Process 5781 attached [pid 5781] set_robust_list(0x555556375660, 24) = 0 [pid 5781] chdir("./374") = 0 [pid 5781] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5781] setpgid(0, 0) = 0 [pid 5781] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5781] write(3, "1000", 4) = 4 [pid 5781] close(3) = 0 [ 166.507417][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5781] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5781] memfd_create("syzkaller", 0) = 3 [pid 5781] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5781] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5781] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5781] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5781] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5781] close(3) = 0 [pid 5781] mkdir("./file0", 0777) = 0 [pid 5781] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5781] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5781] chdir("./file0") = 0 [pid 5781] ioctl(4, LOOP_CLR_FD) = 0 [pid 5781] close(4) = 0 [ 166.589911][ T5781] loop0: detected capacity change from 0 to 2048 [ 166.606924][ T5782] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 166.612013][ T5781] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 166.628357][ T5781] Remounting filesystem read-only [pid 5781] creat("./file2", 040) = 4 [pid 5781] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5781] exit_group(0) = ? [pid 5781] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5781, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- umount2("./374", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./374", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./374/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./374/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./374/binderfs") = 0 [ 166.634146][ T5781] NILFS (loop0): error -5 truncating bmap (ino=16) [ 166.642644][ T5781] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 166.653812][ T5781] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 166.663266][ T5781] NILFS (loop0): error -5 truncating bmap (ino=16) [ 166.682314][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./374/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./374/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./374/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./374/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./374/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./374/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./374") = 0 mkdir("./375", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5783 ./strace-static-x86_64: Process 5783 attached [pid 5783] set_robust_list(0x555556375660, 24) = 0 [ 166.689750][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 166.698146][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 166.707841][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 166.717054][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 166.726351][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5783] chdir("./375") = 0 [pid 5783] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5783] setpgid(0, 0) = 0 [pid 5783] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5783] write(3, "1000", 4) = 4 [pid 5783] close(3) = 0 [pid 5783] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5783] memfd_create("syzkaller", 0) = 3 [pid 5783] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5783] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5783] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5783] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5783] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5783] close(3) = 0 [pid 5783] mkdir("./file0", 0777) = 0 [pid 5783] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5783] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5783] chdir("./file0") = 0 [pid 5783] ioctl(4, LOOP_CLR_FD) = 0 [pid 5783] close(4) = 0 [ 166.808374][ T5783] loop0: detected capacity change from 0 to 2048 [ 166.826241][ T5784] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 166.840045][ T5783] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 166.850914][ T5783] Remounting filesystem read-only [pid 5783] creat("./file2", 040) = 4 [pid 5783] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5783] exit_group(0) = ? [pid 5783] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5783, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./375", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./375", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./375/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./375/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./375/binderfs") = 0 [ 166.857036][ T5783] NILFS (loop0): error -5 truncating bmap (ino=16) [ 166.865020][ T5783] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 166.874986][ T5783] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 166.884382][ T5783] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./375/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./375/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./375/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./375/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./375/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./375/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./375") = 0 mkdir("./376", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5785 ./strace-static-x86_64: Process 5785 attached [pid 5785] set_robust_list(0x555556375660, 24) = 0 [pid 5785] chdir("./376") = 0 [pid 5785] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5785] setpgid(0, 0) = 0 [ 166.904554][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 166.911788][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 166.919107][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 166.928113][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 166.937378][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 166.946951][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5785] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5785] write(3, "1000", 4) = 4 [pid 5785] close(3) = 0 [pid 5785] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5785] memfd_create("syzkaller", 0) = 3 [pid 5785] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5785] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5785] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5785] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5785] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5785] close(3) = 0 [pid 5785] mkdir("./file0", 0777) = 0 [pid 5785] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5785] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5785] chdir("./file0") = 0 [pid 5785] ioctl(4, LOOP_CLR_FD) = 0 [pid 5785] close(4) = 0 [ 167.017362][ T5785] loop0: detected capacity change from 0 to 2048 [ 167.034993][ T5786] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 167.046884][ T5785] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 167.057340][ T5785] Remounting filesystem read-only [pid 5785] creat("./file2", 040) = 4 [pid 5785] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5785] exit_group(0) = ? [pid 5785] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5785, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./376", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./376", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./376/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./376/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./376/binderfs") = 0 [ 167.063786][ T5785] NILFS (loop0): error -5 truncating bmap (ino=16) [ 167.072883][ T5785] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 167.082829][ T5785] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 167.092508][ T5785] NILFS (loop0): error -5 truncating bmap (ino=16) [ 167.109989][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./376/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./376/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./376/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./376/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./376/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./376/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./376") = 0 mkdir("./377", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5787 ./strace-static-x86_64: Process 5787 attached [pid 5787] set_robust_list(0x555556375660, 24) = 0 [pid 5787] chdir("./377") = 0 [pid 5787] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5787] setpgid(0, 0) = 0 [pid 5787] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [ 167.117055][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 167.124700][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 167.133744][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 167.142926][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 167.153360][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5787] write(3, "1000", 4) = 4 [pid 5787] close(3) = 0 [pid 5787] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5787] memfd_create("syzkaller", 0) = 3 [pid 5787] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5787] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5787] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5787] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5787] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5787] close(3) = 0 [pid 5787] mkdir("./file0", 0777) = 0 [pid 5787] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5787] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5787] chdir("./file0") = 0 [pid 5787] ioctl(4, LOOP_CLR_FD) = 0 [pid 5787] close(4) = 0 [ 167.222033][ T5787] loop0: detected capacity change from 0 to 2048 [ 167.237379][ T5788] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5787] creat("./file2", 040) = 4 [pid 5787] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5787] exit_group(0) = ? [pid 5787] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5787, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./377", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./377", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./377/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./377/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./377/binderfs") = 0 [ 167.263707][ T5787] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 167.274156][ T5787] Remounting filesystem read-only [ 167.279595][ T5787] NILFS (loop0): error -5 truncating bmap (ino=16) [ 167.287502][ T5787] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 167.299488][ T5787] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 167.309211][ T5787] NILFS (loop0): error -5 truncating bmap (ino=16) [ 167.326317][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 167.333365][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 167.340670][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 167.349852][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 167.358840][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 167.367953][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer umount2("./377/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./377/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./377/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./377/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./377/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./377/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./377") = 0 mkdir("./378", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5789 ./strace-static-x86_64: Process 5789 attached [pid 5789] set_robust_list(0x555556375660, 24) = 0 [pid 5789] chdir("./378") = 0 [pid 5789] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5789] setpgid(0, 0) = 0 [pid 5789] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5789] write(3, "1000", 4) = 4 [pid 5789] close(3) = 0 [pid 5789] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5789] memfd_create("syzkaller", 0) = 3 [pid 5789] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5789] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5789] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5789] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5789] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5789] close(3) = 0 [pid 5789] mkdir("./file0", 0777) = 0 [pid 5789] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5789] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5789] chdir("./file0") = 0 [pid 5789] ioctl(4, LOOP_CLR_FD) = 0 [pid 5789] close(4) = 0 [ 167.438690][ T5789] loop0: detected capacity change from 0 to 2048 [ 167.455370][ T5790] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 167.473240][ T5789] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5789] creat("./file2", 040) = 4 [pid 5789] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5789] exit_group(0) = ? [pid 5789] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5789, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./378", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./378", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./378/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./378/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./378/binderfs") = 0 [ 167.489118][ T5789] Remounting filesystem read-only [ 167.495211][ T5789] NILFS (loop0): error -5 truncating bmap (ino=16) [ 167.503810][ T5789] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 167.514158][ T5789] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 167.523557][ T5789] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./378/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./378/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./378/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./378/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./378/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./378/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./378") = 0 mkdir("./379", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 [ 167.538745][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 167.545953][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 167.553429][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 167.562597][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 167.571592][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 167.580724][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5791 ./strace-static-x86_64: Process 5791 attached [pid 5791] set_robust_list(0x555556375660, 24) = 0 [pid 5791] chdir("./379") = 0 [pid 5791] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5791] setpgid(0, 0) = 0 [pid 5791] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5791] write(3, "1000", 4) = 4 [pid 5791] close(3) = 0 [pid 5791] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5791] memfd_create("syzkaller", 0) = 3 [pid 5791] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5791] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5791] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5791] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5791] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5791] close(3) = 0 [pid 5791] mkdir("./file0", 0777) = 0 [pid 5791] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5791] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5791] chdir("./file0") = 0 [pid 5791] ioctl(4, LOOP_CLR_FD) = 0 [pid 5791] close(4) = 0 [ 167.644055][ T5791] loop0: detected capacity change from 0 to 2048 [ 167.659636][ T5792] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 167.674426][ T5791] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 167.685158][ T5791] Remounting filesystem read-only [pid 5791] creat("./file2", 040) = 4 [pid 5791] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5791] exit_group(0) = ? [pid 5791] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5791, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./379", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./379", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./379/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./379/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./379/binderfs") = 0 [ 167.693119][ T5791] NILFS (loop0): error -5 truncating bmap (ino=16) [ 167.701195][ T5791] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 167.711598][ T5791] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 167.721215][ T5791] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./379/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./379/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./379/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./379/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./379/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./379/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./379") = 0 mkdir("./380", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5793 ./strace-static-x86_64: Process 5793 attached [pid 5793] set_robust_list(0x555556375660, 24) = 0 [pid 5793] chdir("./380") = 0 [pid 5793] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5793] setpgid(0, 0) = 0 [pid 5793] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5793] write(3, "1000", 4) = 4 [pid 5793] close(3) = 0 [pid 5793] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5793] memfd_create("syzkaller", 0) = 3 [pid 5793] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 167.741111][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 167.748290][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 167.755865][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 167.764915][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 167.773830][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 167.783155][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5793] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5793] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5793] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5793] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5793] close(3) = 0 [pid 5793] mkdir("./file0", 0777) = 0 [pid 5793] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5793] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5793] chdir("./file0") = 0 [pid 5793] ioctl(4, LOOP_CLR_FD) = 0 [pid 5793] close(4) = 0 [ 167.843499][ T5793] loop0: detected capacity change from 0 to 2048 [ 167.858242][ T5794] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 167.880632][ T5793] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5793] creat("./file2", 040) = 4 [pid 5793] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5793] exit_group(0) = ? [pid 5793] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5793, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./380", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./380", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./380/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./380/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./380/binderfs") = 0 [ 167.892139][ T5793] Remounting filesystem read-only [ 167.897953][ T5793] NILFS (loop0): error -5 truncating bmap (ino=16) [ 167.905707][ T5793] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 167.916808][ T5793] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 167.926199][ T5793] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./380/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./380/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./380/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./380/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./380/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./380/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./380") = 0 mkdir("./381", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 167.939965][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 167.947060][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 167.954719][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 167.963638][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 167.972682][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 167.981865][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5795 ./strace-static-x86_64: Process 5795 attached [pid 5795] set_robust_list(0x555556375660, 24) = 0 [pid 5795] chdir("./381") = 0 [pid 5795] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5795] setpgid(0, 0) = 0 [pid 5795] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5795] write(3, "1000", 4) = 4 [pid 5795] close(3) = 0 [pid 5795] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5795] memfd_create("syzkaller", 0) = 3 [pid 5795] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5795] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5795] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5795] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5795] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5795] close(3) = 0 [pid 5795] mkdir("./file0", 0777) = 0 [pid 5795] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5795] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5795] chdir("./file0") = 0 [pid 5795] ioctl(4, LOOP_CLR_FD) = 0 [pid 5795] close(4) = 0 [ 168.057549][ T5795] loop0: detected capacity change from 0 to 2048 [ 168.075360][ T5796] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 168.079837][ T5795] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 168.096866][ T5795] Remounting filesystem read-only [pid 5795] creat("./file2", 040) = 4 [pid 5795] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5795] exit_group(0) = ? [pid 5795] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5795, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./381", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./381", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./381/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./381/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./381/binderfs") = 0 [ 168.104080][ T5795] NILFS (loop0): error -5 truncating bmap (ino=16) [ 168.113606][ T5795] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 168.124368][ T5795] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 168.133623][ T5795] NILFS (loop0): error -5 truncating bmap (ino=16) [ 168.150380][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./381/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./381/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./381/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./381/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./381/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./381/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./381") = 0 mkdir("./382", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5797 ./strace-static-x86_64: Process 5797 attached [pid 5797] set_robust_list(0x555556375660, 24) = 0 [pid 5797] chdir("./382") = 0 [pid 5797] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [ 168.157765][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 168.165134][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 168.174070][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 168.183093][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 168.192252][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5797] setpgid(0, 0) = 0 [pid 5797] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5797] write(3, "1000", 4) = 4 [pid 5797] close(3) = 0 [pid 5797] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5797] memfd_create("syzkaller", 0) = 3 [pid 5797] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5797] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5797] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5797] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5797] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5797] close(3) = 0 [pid 5797] mkdir("./file0", 0777) = 0 [pid 5797] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5797] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5797] chdir("./file0") = 0 [pid 5797] ioctl(4, LOOP_CLR_FD) = 0 [pid 5797] close(4) = 0 [ 168.270568][ T5797] loop0: detected capacity change from 0 to 2048 [ 168.286300][ T5798] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 168.304333][ T5797] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 168.315765][ T5797] Remounting filesystem read-only [pid 5797] creat("./file2", 040) = 4 [pid 5797] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5797] exit_group(0) = ? [pid 5797] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5797, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./382", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./382", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./382/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./382/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./382/binderfs") = 0 [ 168.321002][ T5797] NILFS (loop0): error -5 truncating bmap (ino=16) [ 168.330006][ T5797] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 168.340046][ T5797] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 168.350399][ T5797] NILFS (loop0): error -5 truncating bmap (ino=16) [ 168.370465][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 168.378278][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 168.385776][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 168.394977][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 168.404203][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./382/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./382/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./382/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./382/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./382/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./382/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./382") = 0 mkdir("./383", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5799 ./strace-static-x86_64: Process 5799 attached [pid 5799] set_robust_list(0x555556375660, 24) = 0 [pid 5799] chdir("./383") = 0 [pid 5799] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5799] setpgid(0, 0) = 0 [pid 5799] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5799] write(3, "1000", 4) = 4 [pid 5799] close(3) = 0 [pid 5799] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5799] memfd_create("syzkaller", 0) = 3 [pid 5799] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 168.414245][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5799] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5799] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5799] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5799] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5799] close(3) = 0 [pid 5799] mkdir("./file0", 0777) = 0 [pid 5799] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5799] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5799] chdir("./file0") = 0 [pid 5799] ioctl(4, LOOP_CLR_FD) = 0 [pid 5799] close(4) = 0 [ 168.480157][ T5799] loop0: detected capacity change from 0 to 2048 [ 168.496262][ T5800] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 168.509573][ T5799] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 168.519795][ T5799] Remounting filesystem read-only [pid 5799] creat("./file2", 040) = 4 [pid 5799] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5799] exit_group(0) = ? [pid 5799] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5799, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./383", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./383", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./383/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./383/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./383/binderfs") = 0 [ 168.525037][ T5799] NILFS (loop0): error -5 truncating bmap (ino=16) [ 168.534128][ T5799] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 168.544996][ T5799] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 168.554968][ T5799] NILFS (loop0): error -5 truncating bmap (ino=16) [ 168.569635][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./383/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./383/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./383/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./383/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./383/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./383/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./383") = 0 mkdir("./384", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5801 ./strace-static-x86_64: Process 5801 attached [pid 5801] set_robust_list(0x555556375660, 24) = 0 [pid 5801] chdir("./384") = 0 [pid 5801] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5801] setpgid(0, 0) = 0 [pid 5801] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [ 168.577113][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 168.584989][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 168.594081][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 168.603401][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 168.612945][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5801] write(3, "1000", 4) = 4 [pid 5801] close(3) = 0 [pid 5801] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5801] memfd_create("syzkaller", 0) = 3 [pid 5801] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5801] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5801] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5801] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5801] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5801] close(3) = 0 [pid 5801] mkdir("./file0", 0777) = 0 [pid 5801] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5801] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5801] chdir("./file0") = 0 [pid 5801] ioctl(4, LOOP_CLR_FD) = 0 [pid 5801] close(4) = 0 [ 168.691190][ T5801] loop0: detected capacity change from 0 to 2048 [ 168.707625][ T5802] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5801] creat("./file2", 040) = 4 [pid 5801] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5801] exit_group(0) = ? [pid 5801] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5801, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./384", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./384", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./384/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./384/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./384/binderfs") = 0 [ 168.733090][ T5801] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 168.743473][ T5801] Remounting filesystem read-only [ 168.749121][ T5801] NILFS (loop0): error -5 truncating bmap (ino=16) [ 168.756899][ T5801] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 168.766889][ T5801] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 168.776350][ T5801] NILFS (loop0): error -5 truncating bmap (ino=16) [ 168.793478][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 168.800471][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 168.808243][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 168.817260][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 168.826426][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./384/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./384/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./384/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./384/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./384/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./384/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./384") = 0 mkdir("./385", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5803 ./strace-static-x86_64: Process 5803 attached [pid 5803] set_robust_list(0x555556375660, 24) = 0 [pid 5803] chdir("./385") = 0 [pid 5803] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [ 168.835676][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5803] setpgid(0, 0) = 0 [pid 5803] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5803] write(3, "1000", 4) = 4 [pid 5803] close(3) = 0 [pid 5803] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5803] memfd_create("syzkaller", 0) = 3 [pid 5803] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5803] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5803] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5803] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5803] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5803] close(3) = 0 [pid 5803] mkdir("./file0", 0777) = 0 [pid 5803] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5803] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5803] chdir("./file0") = 0 [pid 5803] ioctl(4, LOOP_CLR_FD) = 0 [pid 5803] close(4) = 0 [ 168.919434][ T5803] loop0: detected capacity change from 0 to 2048 [ 168.937487][ T5804] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 168.955058][ T5803] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5803] creat("./file2", 040) = 4 [pid 5803] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5803] exit_group(0) = ? [pid 5803] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5803, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./385", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./385", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./385/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./385/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./385/binderfs") = 0 [ 168.965636][ T5803] Remounting filesystem read-only [ 168.971359][ T5803] NILFS (loop0): error -5 truncating bmap (ino=16) [ 168.980789][ T5803] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 168.991855][ T5803] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 169.001030][ T5803] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./385/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./385/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./385/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./385/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./385/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./385/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./385") = 0 [ 169.018502][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 169.025839][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 169.033505][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 169.042619][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 169.051599][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 169.060716][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer mkdir("./386", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5805 ./strace-static-x86_64: Process 5805 attached [pid 5805] set_robust_list(0x555556375660, 24) = 0 [pid 5805] chdir("./386") = 0 [pid 5805] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5805] setpgid(0, 0) = 0 [pid 5805] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5805] write(3, "1000", 4) = 4 [pid 5805] close(3) = 0 [pid 5805] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5805] memfd_create("syzkaller", 0) = 3 [pid 5805] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5805] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5805] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5805] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5805] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5805] close(3) = 0 [pid 5805] mkdir("./file0", 0777) = 0 [pid 5805] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5805] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5805] chdir("./file0") = 0 [pid 5805] ioctl(4, LOOP_CLR_FD) = 0 [pid 5805] close(4) = 0 [ 169.152274][ T5805] loop0: detected capacity change from 0 to 2048 [ 169.167384][ T5806] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 169.188868][ T5805] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5805] creat("./file2", 040) = 4 [pid 5805] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5805] exit_group(0) = ? [pid 5805] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5805, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./386", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./386", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./386/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./386/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./386/binderfs") = 0 [ 169.199564][ T5805] Remounting filesystem read-only [ 169.205579][ T5805] NILFS (loop0): error -5 truncating bmap (ino=16) [ 169.213477][ T5805] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 169.223856][ T5805] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 169.233497][ T5805] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./386/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./386/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./386/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./386/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./386/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./386/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 [ 169.251216][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 169.258287][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 169.265817][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 169.274812][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 169.283732][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 169.292956][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer rmdir("./386") = 0 mkdir("./387", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5807 ./strace-static-x86_64: Process 5807 attached [pid 5807] set_robust_list(0x555556375660, 24) = 0 [pid 5807] chdir("./387") = 0 [pid 5807] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5807] setpgid(0, 0) = 0 [pid 5807] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5807] write(3, "1000", 4) = 4 [pid 5807] close(3) = 0 [pid 5807] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5807] memfd_create("syzkaller", 0) = 3 [pid 5807] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5807] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5807] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5807] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5807] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5807] close(3) = 0 [pid 5807] mkdir("./file0", 0777) = 0 [pid 5807] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5807] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5807] chdir("./file0") = 0 [pid 5807] ioctl(4, LOOP_CLR_FD) = 0 [pid 5807] close(4) = 0 [ 169.380942][ T5807] loop0: detected capacity change from 0 to 2048 [ 169.398395][ T5808] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 169.416651][ T5807] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5807] creat("./file2", 040) = 4 [pid 5807] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5807] exit_group(0) = ? [pid 5807] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5807, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./387", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./387", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./387/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./387/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./387/binderfs") = 0 [ 169.427229][ T5807] Remounting filesystem read-only [ 169.433260][ T5807] NILFS (loop0): error -5 truncating bmap (ino=16) [ 169.442501][ T5807] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 169.458488][ T5807] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 169.469004][ T5807] NILFS (loop0): error -5 truncating bmap (ino=16) [ 169.484268][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 169.492376][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 169.500824][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 169.510286][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 169.519604][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./387/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./387/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./387/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./387/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./387/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./387/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./387") = 0 mkdir("./388", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5809 ./strace-static-x86_64: Process 5809 attached [pid 5809] set_robust_list(0x555556375660, 24) = 0 [pid 5809] chdir("./388") = 0 [pid 5809] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5809] setpgid(0, 0) = 0 [pid 5809] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5809] write(3, "1000", 4) = 4 [pid 5809] close(3) = 0 [pid 5809] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5809] memfd_create("syzkaller", 0) = 3 [pid 5809] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 169.528953][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5809] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5809] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5809] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5809] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5809] close(3) = 0 [pid 5809] mkdir("./file0", 0777) = 0 [pid 5809] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5809] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5809] chdir("./file0") = 0 [pid 5809] ioctl(4, LOOP_CLR_FD) = 0 [pid 5809] close(4) = 0 [ 169.598775][ T5809] loop0: detected capacity change from 0 to 2048 [ 169.617046][ T5810] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 169.632442][ T5809] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5809] creat("./file2", 040) = 4 [pid 5809] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5809] exit_group(0) = ? [pid 5809] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5809, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./388", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./388", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./388/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./388/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./388/binderfs") = 0 [ 169.643852][ T5809] Remounting filesystem read-only [ 169.650644][ T5809] NILFS (loop0): error -5 truncating bmap (ino=16) [ 169.658787][ T5809] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 169.669224][ T5809] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 169.678980][ T5809] NILFS (loop0): error -5 truncating bmap (ino=16) [ 169.721644][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 169.728752][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 169.736541][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 169.746097][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 169.756028][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./388/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./388/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./388/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./388/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./388/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./388/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./388") = 0 mkdir("./389", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5811 ./strace-static-x86_64: Process 5811 attached [pid 5811] set_robust_list(0x555556375660, 24) = 0 [pid 5811] chdir("./389") = 0 [pid 5811] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5811] setpgid(0, 0) = 0 [ 169.765800][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5811] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5811] write(3, "1000", 4) = 4 [pid 5811] close(3) = 0 [pid 5811] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5811] memfd_create("syzkaller", 0) = 3 [pid 5811] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5811] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5811] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5811] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5811] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5811] close(3) = 0 [pid 5811] mkdir("./file0", 0777) = 0 [pid 5811] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5811] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5811] chdir("./file0") = 0 [pid 5811] ioctl(4, LOOP_CLR_FD) = 0 [pid 5811] close(4) = 0 [pid 5811] creat("./file2", 040) = 4 [ 169.844478][ T5811] loop0: detected capacity change from 0 to 2048 [ 169.859389][ T5812] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 169.868250][ T5811] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 169.880602][ T5811] Remounting filesystem read-only [ 169.886519][ T5811] NILFS (loop0): error -5 truncating bmap (ino=16) [pid 5811] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5811] exit_group(0) = ? [pid 5811] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5811, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./389", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./389", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./389/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./389/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./389/binderfs") = 0 [ 169.895876][ T5811] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 169.906400][ T5811] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 169.916074][ T5811] NILFS (loop0): error -5 truncating bmap (ino=16) [ 169.931107][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 169.938459][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 umount2("./389/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./389/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./389/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./389/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./389/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./389/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./389") = 0 mkdir("./390", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5813 ./strace-static-x86_64: Process 5813 attached [pid 5813] set_robust_list(0x555556375660, 24) = 0 [pid 5813] chdir("./390") = 0 [pid 5813] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5813] setpgid(0, 0) = 0 [pid 5813] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5813] write(3, "1000", 4) = 4 [pid 5813] close(3) = 0 [pid 5813] symlink("/dev/binderfs", "./binderfs") = 0 [ 169.946294][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 169.955494][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 169.964580][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 169.973920][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5813] memfd_create("syzkaller", 0) = 3 [pid 5813] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5813] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5813] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5813] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5813] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5813] close(3) = 0 [pid 5813] mkdir("./file0", 0777) = 0 [pid 5813] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5813] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5813] chdir("./file0") = 0 [pid 5813] ioctl(4, LOOP_CLR_FD) = 0 [pid 5813] close(4) = 0 [ 170.047540][ T5813] loop0: detected capacity change from 0 to 2048 [ 170.062799][ T5814] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 170.084216][ T5813] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5813] creat("./file2", 040) = 4 [pid 5813] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5813] exit_group(0) = ? [pid 5813] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5813, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./390", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./390", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./390/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./390/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./390/binderfs") = 0 [ 170.094945][ T5813] Remounting filesystem read-only [ 170.100131][ T5813] NILFS (loop0): error -5 truncating bmap (ino=16) [ 170.108896][ T5813] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 170.119132][ T5813] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 170.129164][ T5813] NILFS (loop0): error -5 truncating bmap (ino=16) [ 170.148230][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 170.156072][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 170.163782][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 170.173043][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 170.182474][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./390/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./390/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./390/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./390/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./390/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./390/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./390") = 0 mkdir("./391", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5815 ./strace-static-x86_64: Process 5815 attached [pid 5815] set_robust_list(0x555556375660, 24) = 0 [pid 5815] chdir("./391") = 0 [pid 5815] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5815] setpgid(0, 0) = 0 [pid 5815] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5815] write(3, "1000", 4) = 4 [pid 5815] close(3) = 0 [pid 5815] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5815] memfd_create("syzkaller", 0) = 3 [pid 5815] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 170.192141][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5815] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5815] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5815] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5815] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5815] close(3) = 0 [pid 5815] mkdir("./file0", 0777) = 0 [pid 5815] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5815] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5815] chdir("./file0") = 0 [pid 5815] ioctl(4, LOOP_CLR_FD) = 0 [pid 5815] close(4) = 0 [ 170.261759][ T5815] loop0: detected capacity change from 0 to 2048 [ 170.277727][ T5816] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 170.298704][ T5815] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5815] creat("./file2", 040) = 4 [pid 5815] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5815] exit_group(0) = ? [pid 5815] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5815, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./391", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./391", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./391/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./391/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./391/binderfs") = 0 [ 170.309646][ T5815] Remounting filesystem read-only [ 170.315644][ T5815] NILFS (loop0): error -5 truncating bmap (ino=16) [ 170.327034][ T5815] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 170.337184][ T5815] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 170.346899][ T5815] NILFS (loop0): error -5 truncating bmap (ino=16) [ 170.361758][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 170.368839][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 170.376749][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 170.386381][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 170.395769][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./391/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./391/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./391/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./391/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./391/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./391/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./391") = 0 mkdir("./392", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5817 ./strace-static-x86_64: Process 5817 attached [pid 5817] set_robust_list(0x555556375660, 24) = 0 [pid 5817] chdir("./392") = 0 [pid 5817] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [ 170.405801][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5817] setpgid(0, 0) = 0 [pid 5817] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5817] write(3, "1000", 4) = 4 [pid 5817] close(3) = 0 [pid 5817] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5817] memfd_create("syzkaller", 0) = 3 [pid 5817] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5817] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5817] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5817] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5817] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5817] close(3) = 0 [pid 5817] mkdir("./file0", 0777) = 0 [pid 5817] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5817] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5817] chdir("./file0") = 0 [pid 5817] ioctl(4, LOOP_CLR_FD) = 0 [pid 5817] close(4) = 0 [ 170.484014][ T5817] loop0: detected capacity change from 0 to 2048 [ 170.499384][ T5818] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 170.512433][ T5817] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 170.523447][ T5817] Remounting filesystem read-only [pid 5817] creat("./file2", 040) = 4 [pid 5817] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5817] exit_group(0) = ? [pid 5817] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5817, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./392", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./392", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./392/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./392/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./392/binderfs") = 0 [ 170.535527][ T5817] NILFS (loop0): error -5 truncating bmap (ino=16) [ 170.544725][ T5817] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 170.554615][ T5817] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 170.564302][ T5817] NILFS (loop0): error -5 truncating bmap (ino=16) [ 170.584738][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 170.592049][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 170.601062][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 170.610958][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 170.620167][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./392/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./392/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./392/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./392/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./392/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./392/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./392") = 0 mkdir("./393", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5819 ./strace-static-x86_64: Process 5819 attached [pid 5819] set_robust_list(0x555556375660, 24) = 0 [pid 5819] chdir("./393") = 0 [ 170.629701][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5819] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5819] setpgid(0, 0) = 0 [pid 5819] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5819] write(3, "1000", 4) = 4 [pid 5819] close(3) = 0 [pid 5819] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5819] memfd_create("syzkaller", 0) = 3 [pid 5819] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5819] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5819] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5819] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5819] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5819] close(3) = 0 [pid 5819] mkdir("./file0", 0777) = 0 [pid 5819] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5819] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5819] chdir("./file0") = 0 [pid 5819] ioctl(4, LOOP_CLR_FD) = 0 [pid 5819] close(4) = 0 [ 170.701137][ T5819] loop0: detected capacity change from 0 to 2048 [ 170.717302][ T5820] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 170.734370][ T5819] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5819] creat("./file2", 040) = 4 [pid 5819] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5819] exit_group(0) = ? [pid 5819] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5819, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./393", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./393", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./393/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./393/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./393/binderfs") = 0 [ 170.746398][ T5819] Remounting filesystem read-only [ 170.752771][ T5819] NILFS (loop0): error -5 truncating bmap (ino=16) [ 170.760238][ T5819] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 170.770463][ T5819] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 170.780358][ T5819] NILFS (loop0): error -5 truncating bmap (ino=16) [ 170.799371][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 170.806747][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 170.815058][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 170.824311][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 170.833537][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./393/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./393/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./393/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./393/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./393/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./393/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./393") = 0 mkdir("./394", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5821 ./strace-static-x86_64: Process 5821 attached [pid 5821] set_robust_list(0x555556375660, 24) = 0 [pid 5821] chdir("./394") = 0 [pid 5821] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5821] setpgid(0, 0) = 0 [pid 5821] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5821] write(3, "1000", 4) = 4 [pid 5821] close(3) = 0 [pid 5821] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5821] memfd_create("syzkaller", 0) = 3 [pid 5821] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 170.843078][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5821] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5821] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5821] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5821] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5821] close(3) = 0 [pid 5821] mkdir("./file0", 0777) = 0 [pid 5821] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5821] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5821] chdir("./file0") = 0 [pid 5821] ioctl(4, LOOP_CLR_FD) = 0 [pid 5821] close(4) = 0 [ 170.916235][ T5821] loop0: detected capacity change from 0 to 2048 [ 170.932241][ T5822] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 170.947154][ T5821] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 170.957623][ T5821] Remounting filesystem read-only [pid 5821] creat("./file2", 040) = 4 [pid 5821] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5821] exit_group(0) = ? [pid 5821] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5821, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./394", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./394", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./394/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./394/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./394/binderfs") = 0 [ 170.963844][ T5821] NILFS (loop0): error -5 truncating bmap (ino=16) [ 170.972587][ T5821] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 170.982755][ T5821] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 170.992908][ T5821] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./394/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./394/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./394/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./394/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./394/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./394/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./394") = 0 mkdir("./395", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5823 ./strace-static-x86_64: Process 5823 attached [pid 5823] set_robust_list(0x555556375660, 24) = 0 [pid 5823] chdir("./395") = 0 [pid 5823] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5823] setpgid(0, 0) = 0 [pid 5823] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5823] write(3, "1000", 4) = 4 [pid 5823] close(3) = 0 [pid 5823] symlink("/dev/binderfs", "./binderfs") = 0 [ 171.010329][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 171.017737][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 171.025489][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 171.034824][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 171.044133][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 171.054058][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5823] memfd_create("syzkaller", 0) = 3 [pid 5823] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5823] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5823] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5823] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5823] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5823] close(3) = 0 [pid 5823] mkdir("./file0", 0777) = 0 [pid 5823] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5823] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5823] chdir("./file0") = 0 [pid 5823] ioctl(4, LOOP_CLR_FD) = 0 [pid 5823] close(4) = 0 [ 171.118745][ T5823] loop0: detected capacity change from 0 to 2048 [ 171.134428][ T5824] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 171.155242][ T5823] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5823] creat("./file2", 040) = 4 [pid 5823] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5823] exit_group(0) = ? [pid 5823] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5823, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./395", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./395", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./395/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./395/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./395/binderfs") = 0 [ 171.165461][ T5823] Remounting filesystem read-only [ 171.170647][ T5823] NILFS (loop0): error -5 truncating bmap (ino=16) [ 171.179521][ T5823] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 171.189859][ T5823] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 171.199824][ T5823] NILFS (loop0): error -5 truncating bmap (ino=16) [ 171.220547][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 171.227951][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 171.235356][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 171.244379][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 171.253351][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./395/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./395/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./395/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./395/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./395/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./395/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./395") = 0 mkdir("./396", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5825 ./strace-static-x86_64: Process 5825 attached [pid 5825] set_robust_list(0x555556375660, 24) = 0 [pid 5825] chdir("./396") = 0 [pid 5825] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5825] setpgid(0, 0) = 0 [ 171.262476][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5825] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5825] write(3, "1000", 4) = 4 [pid 5825] close(3) = 0 [pid 5825] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5825] memfd_create("syzkaller", 0) = 3 [pid 5825] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5825] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5825] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5825] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5825] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5825] close(3) = 0 [pid 5825] mkdir("./file0", 0777) = 0 [pid 5825] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5825] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5825] chdir("./file0") = 0 [pid 5825] ioctl(4, LOOP_CLR_FD) = 0 [pid 5825] close(4) = 0 [ 171.350116][ T5825] loop0: detected capacity change from 0 to 2048 [ 171.366972][ T5826] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 171.373581][ T5825] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 171.388002][ T5825] Remounting filesystem read-only [pid 5825] creat("./file2", 040) = 4 [pid 5825] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5825] exit_group(0) = ? [pid 5825] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5825, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./396", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./396", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./396/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./396/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./396/binderfs") = 0 [ 171.393507][ T5825] NILFS (loop0): error -5 truncating bmap (ino=16) [ 171.402464][ T5825] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 171.412465][ T5825] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 171.422155][ T5825] NILFS (loop0): error -5 truncating bmap (ino=16) [ 171.439477][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./396/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./396/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./396/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./396/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./396/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./396/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./396") = 0 mkdir("./397", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5827 ./strace-static-x86_64: Process 5827 attached [pid 5827] set_robust_list(0x555556375660, 24) = 0 [ 171.446940][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 171.454291][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 171.463460][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 171.472474][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 171.481792][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5827] chdir("./397") = 0 [pid 5827] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5827] setpgid(0, 0) = 0 [pid 5827] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5827] write(3, "1000", 4) = 4 [pid 5827] close(3) = 0 [pid 5827] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5827] memfd_create("syzkaller", 0) = 3 [pid 5827] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5827] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5827] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5827] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5827] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5827] close(3) = 0 [pid 5827] mkdir("./file0", 0777) = 0 [pid 5827] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5827] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5827] chdir("./file0") = 0 [pid 5827] ioctl(4, LOOP_CLR_FD) = 0 [pid 5827] close(4) = 0 [ 171.568935][ T5827] loop0: detected capacity change from 0 to 2048 [ 171.584696][ T5828] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 171.605168][ T5827] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5827] creat("./file2", 040) = 4 [pid 5827] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5827] exit_group(0) = ? [pid 5827] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5827, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./397", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./397", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./397/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./397/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./397/binderfs") = 0 [ 171.615147][ T5827] Remounting filesystem read-only [ 171.620410][ T5827] NILFS (loop0): error -5 truncating bmap (ino=16) [ 171.628611][ T5827] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 171.638539][ T5827] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 171.649877][ T5827] NILFS (loop0): error -5 truncating bmap (ino=16) [ 171.666914][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 171.674246][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 171.687313][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 171.696629][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 171.705746][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./397/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./397/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./397/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./397/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./397/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./397/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./397") = 0 mkdir("./398", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5829 ./strace-static-x86_64: Process 5829 attached [pid 5829] set_robust_list(0x555556375660, 24) = 0 [pid 5829] chdir("./398") = 0 [pid 5829] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5829] setpgid(0, 0) = 0 [ 171.715507][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5829] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5829] write(3, "1000", 4) = 4 [pid 5829] close(3) = 0 [pid 5829] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5829] memfd_create("syzkaller", 0) = 3 [pid 5829] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5829] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5829] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5829] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5829] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5829] close(3) = 0 [pid 5829] mkdir("./file0", 0777) = 0 [pid 5829] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5829] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5829] chdir("./file0") = 0 [pid 5829] ioctl(4, LOOP_CLR_FD) = 0 [pid 5829] close(4) = 0 [ 171.784385][ T5829] loop0: detected capacity change from 0 to 2048 [ 171.802514][ T5830] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 171.818086][ T5829] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 171.828418][ T5829] Remounting filesystem read-only [pid 5829] creat("./file2", 040) = 4 [pid 5829] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5829] exit_group(0) = ? [pid 5829] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5829, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./398", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./398", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./398/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./398/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./398/binderfs") = 0 [ 171.833791][ T5829] NILFS (loop0): error -5 truncating bmap (ino=16) [ 171.842754][ T5829] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 171.852856][ T5829] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 171.862220][ T5829] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./398/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./398/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./398/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./398/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./398/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./398/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./398") = 0 mkdir("./399", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5831 ./strace-static-x86_64: Process 5831 attached [pid 5831] set_robust_list(0x555556375660, 24) = 0 [pid 5831] chdir("./399") = 0 [pid 5831] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5831] setpgid(0, 0) = 0 [pid 5831] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5831] write(3, "1000", 4) = 4 [pid 5831] close(3) = 0 [pid 5831] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5831] memfd_create("syzkaller", 0) = 3 [pid 5831] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 171.880569][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 171.887813][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 171.895368][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 171.905075][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 171.914051][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 171.924055][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5831] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5831] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5831] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5831] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5831] close(3) = 0 [pid 5831] mkdir("./file0", 0777) = 0 [pid 5831] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5831] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5831] chdir("./file0") = 0 [pid 5831] ioctl(4, LOOP_CLR_FD) = 0 [pid 5831] close(4) = 0 [ 171.983411][ T5831] loop0: detected capacity change from 0 to 2048 [ 171.999075][ T5832] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 172.017167][ T5831] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 172.027769][ T5831] Remounting filesystem read-only [pid 5831] creat("./file2", 040) = 4 [pid 5831] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5831] exit_group(0) = ? [pid 5831] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5831, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./399", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./399", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./399/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./399/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./399/binderfs") = 0 [ 172.033519][ T5831] NILFS (loop0): error -5 truncating bmap (ino=16) [ 172.043104][ T5831] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 172.053328][ T5831] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 172.062759][ T5831] NILFS (loop0): error -5 truncating bmap (ino=16) [ 172.082422][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 172.089830][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 172.097517][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 172.106469][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 172.115726][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./399/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./399/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./399/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./399/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./399/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./399/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./399") = 0 mkdir("./400", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 172.126364][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5833 ./strace-static-x86_64: Process 5833 attached [pid 5833] set_robust_list(0x555556375660, 24) = 0 [pid 5833] chdir("./400") = 0 [pid 5833] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5833] setpgid(0, 0) = 0 [pid 5833] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5833] write(3, "1000", 4) = 4 [pid 5833] close(3) = 0 [pid 5833] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5833] memfd_create("syzkaller", 0) = 3 [pid 5833] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5833] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5833] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5833] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5833] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5833] close(3) = 0 [pid 5833] mkdir("./file0", 0777) = 0 [pid 5833] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5833] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5833] chdir("./file0") = 0 [pid 5833] ioctl(4, LOOP_CLR_FD) = 0 [pid 5833] close(4) = 0 [ 172.214493][ T5833] loop0: detected capacity change from 0 to 2048 [ 172.229945][ T5834] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 172.244076][ T5833] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 172.254464][ T5833] Remounting filesystem read-only [pid 5833] creat("./file2", 040) = 4 [pid 5833] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5833] exit_group(0) = ? [pid 5833] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5833, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./400", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./400", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./400/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./400/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./400/binderfs") = 0 [ 172.259940][ T5833] NILFS (loop0): error -5 truncating bmap (ino=16) [ 172.269083][ T5833] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 172.279247][ T5833] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 172.288631][ T5833] NILFS (loop0): error -5 truncating bmap (ino=16) [ 172.304925][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./400/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./400/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./400/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./400/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./400/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./400/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./400") = 0 [ 172.312368][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 172.321554][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 172.330462][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 172.339484][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 172.348895][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer mkdir("./401", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5835 ./strace-static-x86_64: Process 5835 attached [pid 5835] set_robust_list(0x555556375660, 24) = 0 [pid 5835] chdir("./401") = 0 [pid 5835] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5835] setpgid(0, 0) = 0 [pid 5835] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5835] write(3, "1000", 4) = 4 [pid 5835] close(3) = 0 [pid 5835] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5835] memfd_create("syzkaller", 0) = 3 [pid 5835] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5835] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5835] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5835] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5835] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5835] close(3) = 0 [pid 5835] mkdir("./file0", 0777) = 0 [pid 5835] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5835] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5835] chdir("./file0") = 0 [pid 5835] ioctl(4, LOOP_CLR_FD) = 0 [pid 5835] close(4) = 0 [ 172.433344][ T5835] loop0: detected capacity change from 0 to 2048 [ 172.449546][ T5836] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 172.472633][ T5835] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5835] creat("./file2", 040) = 4 [pid 5835] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5835] exit_group(0) = ? [pid 5835] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5835, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- umount2("./401", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./401", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./401/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./401/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./401/binderfs") = 0 [ 172.484099][ T5835] Remounting filesystem read-only [ 172.489873][ T5835] NILFS (loop0): error -5 truncating bmap (ino=16) [ 172.497837][ T5835] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 172.509197][ T5835] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 172.519441][ T5835] NILFS (loop0): error -5 truncating bmap (ino=16) [ 172.535037][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 172.542168][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 172.549493][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 172.558978][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 172.568133][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./401/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./401/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./401/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./401/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./401/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./401/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./401") = 0 mkdir("./402", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5837 ./strace-static-x86_64: Process 5837 attached [pid 5837] set_robust_list(0x555556375660, 24) = 0 [pid 5837] chdir("./402") = 0 [ 172.577912][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5837] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5837] setpgid(0, 0) = 0 [pid 5837] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5837] write(3, "1000", 4) = 4 [pid 5837] close(3) = 0 [pid 5837] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5837] memfd_create("syzkaller", 0) = 3 [pid 5837] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5837] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5837] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5837] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5837] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5837] close(3) = 0 [pid 5837] mkdir("./file0", 0777) = 0 [pid 5837] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5837] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5837] chdir("./file0") = 0 [pid 5837] ioctl(4, LOOP_CLR_FD) = 0 [pid 5837] close(4) = 0 [ 172.657006][ T5837] loop0: detected capacity change from 0 to 2048 [ 172.673235][ T5838] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 172.686730][ T5837] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 172.697857][ T5837] Remounting filesystem read-only [pid 5837] creat("./file2", 040) = 4 [pid 5837] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5837] exit_group(0) = ? [pid 5837] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5837, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./402", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./402", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./402/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./402/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./402/binderfs") = 0 [ 172.703443][ T5837] NILFS (loop0): error -5 truncating bmap (ino=16) [ 172.712117][ T5837] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 172.722218][ T5837] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 172.731797][ T5837] NILFS (loop0): error -5 truncating bmap (ino=16) [ 172.746673][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./402/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./402/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./402/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./402/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./402/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./402/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./402") = 0 mkdir("./403", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5839 ./strace-static-x86_64: Process 5839 attached [pid 5839] set_robust_list(0x555556375660, 24) = 0 [ 172.754141][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 172.761603][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 172.770725][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 172.779872][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 172.789339][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5839] chdir("./403") = 0 [pid 5839] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5839] setpgid(0, 0) = 0 [pid 5839] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5839] write(3, "1000", 4) = 4 [pid 5839] close(3) = 0 [pid 5839] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5839] memfd_create("syzkaller", 0) = 3 [pid 5839] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5839] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5839] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5839] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5839] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5839] close(3) = 0 [pid 5839] mkdir("./file0", 0777) = 0 [pid 5839] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5839] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5839] chdir("./file0") = 0 [pid 5839] ioctl(4, LOOP_CLR_FD) = 0 [pid 5839] close(4) = 0 [ 172.865308][ T5839] loop0: detected capacity change from 0 to 2048 [ 172.881268][ T5840] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 172.902043][ T5839] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5839] creat("./file2", 040) = 4 [pid 5839] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5839] exit_group(0) = ? [pid 5839] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5839, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./403", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./403", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./403/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./403/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./403/binderfs") = 0 [ 172.914778][ T5839] Remounting filesystem read-only [ 172.920178][ T5839] NILFS (loop0): error -5 truncating bmap (ino=16) [ 172.929450][ T5839] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 172.939996][ T5839] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 172.949587][ T5839] NILFS (loop0): error -5 truncating bmap (ino=16) [ 172.965948][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 172.972978][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 172.980654][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 172.991547][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 173.000488][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./403/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./403/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./403/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./403/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./403/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./403/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./403") = 0 mkdir("./404", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5841 ./strace-static-x86_64: Process 5841 attached [pid 5841] set_robust_list(0x555556375660, 24) = 0 [pid 5841] chdir("./404") = 0 [pid 5841] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5841] setpgid(0, 0) = 0 [pid 5841] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5841] write(3, "1000", 4) = 4 [pid 5841] close(3) = 0 [pid 5841] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5841] memfd_create("syzkaller", 0) = 3 [pid 5841] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 173.009844][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5841] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5841] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5841] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5841] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5841] close(3) = 0 [pid 5841] mkdir("./file0", 0777) = 0 [pid 5841] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5841] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5841] chdir("./file0") = 0 [pid 5841] ioctl(4, LOOP_CLR_FD) = 0 [pid 5841] close(4) = 0 [ 173.072305][ T5841] loop0: detected capacity change from 0 to 2048 [ 173.091304][ T5842] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 173.094295][ T5841] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 173.112725][ T5841] Remounting filesystem read-only [pid 5841] creat("./file2", 040) = 4 [pid 5841] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5841] exit_group(0) = ? [pid 5841] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5841, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./404", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./404", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./404/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./404/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./404/binderfs") = 0 [ 173.121584][ T5841] NILFS (loop0): error -5 truncating bmap (ino=16) [ 173.129933][ T5841] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 173.140235][ T5841] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 173.149852][ T5841] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./404/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./404/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./404/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./404/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./404/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./404/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./404") = 0 mkdir("./405", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 [ 173.168724][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 173.175840][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 173.183315][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 173.193763][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 173.202820][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 173.212213][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5843 ./strace-static-x86_64: Process 5843 attached [pid 5843] set_robust_list(0x555556375660, 24) = 0 [pid 5843] chdir("./405") = 0 [pid 5843] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5843] setpgid(0, 0) = 0 [pid 5843] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5843] write(3, "1000", 4) = 4 [pid 5843] close(3) = 0 [pid 5843] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5843] memfd_create("syzkaller", 0) = 3 [pid 5843] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5843] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5843] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5843] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5843] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5843] close(3) = 0 [pid 5843] mkdir("./file0", 0777) = 0 [pid 5843] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5843] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5843] chdir("./file0") = 0 [pid 5843] ioctl(4, LOOP_CLR_FD) = 0 [pid 5843] close(4) = 0 [ 173.291986][ T5843] loop0: detected capacity change from 0 to 2048 [ 173.307568][ T5844] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 173.325885][ T5843] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 173.336208][ T5843] Remounting filesystem read-only [pid 5843] creat("./file2", 040) = 4 [pid 5843] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5843] exit_group(0) = ? [pid 5843] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5843, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./405", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./405", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./405/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./405/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./405/binderfs") = 0 [ 173.341351][ T5843] NILFS (loop0): error -5 truncating bmap (ino=16) [ 173.348970][ T5843] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 173.359111][ T5843] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 173.368704][ T5843] NILFS (loop0): error -5 truncating bmap (ino=16) [ 173.383355][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./405/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./405/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./405/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./405/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./405/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./405/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./405") = 0 mkdir("./406", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5845 ./strace-static-x86_64: Process 5845 attached [pid 5845] set_robust_list(0x555556375660, 24) = 0 [pid 5845] chdir("./406") = 0 [pid 5845] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5845] setpgid(0, 0) = 0 [pid 5845] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5845] write(3, "1000", 4) = 4 [pid 5845] close(3) = 0 [pid 5845] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5845] memfd_create("syzkaller", 0) = 3 [pid 5845] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 173.391318][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 173.399564][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 173.411691][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 173.421640][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 173.431014][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5845] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5845] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5845] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5845] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5845] close(3) = 0 [pid 5845] mkdir("./file0", 0777) = 0 [pid 5845] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5845] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5845] chdir("./file0") = 0 [pid 5845] ioctl(4, LOOP_CLR_FD) = 0 [pid 5845] close(4) = 0 [ 173.489459][ T5845] loop0: detected capacity change from 0 to 2048 [ 173.506427][ T5846] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 173.521038][ T5845] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 173.531764][ T5845] Remounting filesystem read-only [pid 5845] creat("./file2", 040) = 4 [pid 5845] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5845] exit_group(0) = ? [pid 5845] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5845, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./406", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./406", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./406/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./406/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./406/binderfs") = 0 [ 173.537540][ T5845] NILFS (loop0): error -5 truncating bmap (ino=16) [ 173.546513][ T5845] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 173.557183][ T5845] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 173.566982][ T5845] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./406/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./406/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./406/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./406/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./406/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./406/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./406") = 0 mkdir("./407", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 [ 173.584574][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 173.592010][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 173.599606][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 173.610490][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 173.620107][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 173.630536][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5847 ./strace-static-x86_64: Process 5847 attached [pid 5847] set_robust_list(0x555556375660, 24) = 0 [pid 5847] chdir("./407") = 0 [pid 5847] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5847] setpgid(0, 0) = 0 [pid 5847] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5847] write(3, "1000", 4) = 4 [pid 5847] close(3) = 0 [pid 5847] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5847] memfd_create("syzkaller", 0) = 3 [pid 5847] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5847] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5847] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5847] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5847] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5847] close(3) = 0 [pid 5847] mkdir("./file0", 0777) = 0 [pid 5847] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5847] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5847] chdir("./file0") = 0 [pid 5847] ioctl(4, LOOP_CLR_FD) = 0 [pid 5847] close(4) = 0 [ 173.713121][ T5847] loop0: detected capacity change from 0 to 2048 [ 173.729673][ T5848] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 173.743572][ T5847] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 173.754310][ T5847] Remounting filesystem read-only [pid 5847] creat("./file2", 040) = 4 [pid 5847] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5847] exit_group(0) = ? [pid 5847] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5847, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./407", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./407", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./407/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./407/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./407/binderfs") = 0 [ 173.759831][ T5847] NILFS (loop0): error -5 truncating bmap (ino=16) [ 173.768849][ T5847] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 173.779339][ T5847] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 173.789113][ T5847] NILFS (loop0): error -5 truncating bmap (ino=16) [ 173.806252][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./407/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./407/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./407/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./407/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./407/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./407/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./407") = 0 mkdir("./408", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5849 ./strace-static-x86_64: Process 5849 attached [pid 5849] set_robust_list(0x555556375660, 24) = 0 [pid 5849] chdir("./408") = 0 [pid 5849] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [ 173.813921][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 173.821274][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 173.830245][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 173.839762][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 173.849419][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5849] setpgid(0, 0) = 0 [pid 5849] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5849] write(3, "1000", 4) = 4 [pid 5849] close(3) = 0 [pid 5849] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5849] memfd_create("syzkaller", 0) = 3 [pid 5849] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5849] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5849] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5849] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5849] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5849] close(3) = 0 [pid 5849] mkdir("./file0", 0777) = 0 [pid 5849] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5849] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5849] chdir("./file0") = 0 [pid 5849] ioctl(4, LOOP_CLR_FD) = 0 [pid 5849] close(4) = 0 [ 173.940556][ T5849] loop0: detected capacity change from 0 to 2048 [ 173.957043][ T5850] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 173.973536][ T5849] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 173.983947][ T5849] Remounting filesystem read-only [pid 5849] creat("./file2", 040) = 4 [pid 5849] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5849] exit_group(0) = ? [pid 5849] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5849, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./408", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./408", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./408/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./408/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./408/binderfs") = 0 [ 173.989586][ T5849] NILFS (loop0): error -5 truncating bmap (ino=16) [ 173.998447][ T5849] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 174.008557][ T5849] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 174.018344][ T5849] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./408/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./408/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./408/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./408/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./408/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./408/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./408") = 0 mkdir("./409", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5851 ./strace-static-x86_64: Process 5851 attached [pid 5851] set_robust_list(0x555556375660, 24) = 0 [ 174.036495][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 174.043715][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 174.051232][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 174.060222][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 174.069152][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 174.078774][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5851] chdir("./409") = 0 [pid 5851] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5851] setpgid(0, 0) = 0 [pid 5851] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5851] write(3, "1000", 4) = 4 [pid 5851] close(3) = 0 [pid 5851] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5851] memfd_create("syzkaller", 0) = 3 [pid 5851] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5851] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5851] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5851] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5851] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5851] close(3) = 0 [pid 5851] mkdir("./file0", 0777) = 0 [pid 5851] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5851] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5851] chdir("./file0") = 0 [pid 5851] ioctl(4, LOOP_CLR_FD) = 0 [pid 5851] close(4) = 0 [ 174.162133][ T5851] loop0: detected capacity change from 0 to 2048 [ 174.177346][ T5852] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 174.181855][ T5851] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 174.199593][ T5851] Remounting filesystem read-only [pid 5851] creat("./file2", 040) = 4 [pid 5851] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5851] exit_group(0) = ? [pid 5851] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5851, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./409", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./409", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./409/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./409/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./409/binderfs") = 0 [ 174.210176][ T5851] NILFS (loop0): error -5 truncating bmap (ino=16) [ 174.217807][ T5851] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 174.228867][ T5851] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 174.238979][ T5851] NILFS (loop0): error -5 truncating bmap (ino=16) [ 174.253762][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./409/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./409/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./409/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./409/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./409/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./409/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./409") = 0 mkdir("./410", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5853 ./strace-static-x86_64: Process 5853 attached [pid 5853] set_robust_list(0x555556375660, 24) = 0 [pid 5853] chdir("./410") = 0 [pid 5853] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5853] setpgid(0, 0) = 0 [pid 5853] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5853] write(3, "1000", 4) = 4 [pid 5853] close(3) = 0 [pid 5853] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5853] memfd_create("syzkaller", 0) = 3 [pid 5853] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 174.260871][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 174.268438][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 174.277407][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 174.286638][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 174.296317][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5853] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5853] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5853] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5853] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5853] close(3) = 0 [pid 5853] mkdir("./file0", 0777) = 0 [pid 5853] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5853] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5853] chdir("./file0") = 0 [pid 5853] ioctl(4, LOOP_CLR_FD) = 0 [pid 5853] close(4) = 0 [ 174.355251][ T5853] loop0: detected capacity change from 0 to 2048 [ 174.371266][ T5854] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 174.394946][ T5853] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5853] creat("./file2", 040) = 4 [pid 5853] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5853] exit_group(0) = ? [pid 5853] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5853, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./410", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./410", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./410/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./410/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./410/binderfs") = 0 [ 174.405142][ T5853] Remounting filesystem read-only [ 174.410426][ T5853] NILFS (loop0): error -5 truncating bmap (ino=16) [ 174.419529][ T5853] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 174.430688][ T5853] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 174.440485][ T5853] NILFS (loop0): error -5 truncating bmap (ino=16) [ 174.456511][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 174.463755][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 174.471107][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 174.481554][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 174.490743][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./410/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./410/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./410/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./410/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./410/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./410/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./410") = 0 mkdir("./411", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5855 ./strace-static-x86_64: Process 5855 attached [pid 5855] set_robust_list(0x555556375660, 24) = 0 [pid 5855] chdir("./411") = 0 [pid 5855] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5855] setpgid(0, 0) = 0 [pid 5855] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5855] write(3, "1000", 4) = 4 [pid 5855] close(3) = 0 [pid 5855] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5855] memfd_create("syzkaller", 0) = 3 [pid 5855] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 174.500429][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5855] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5855] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5855] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5855] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5855] close(3) = 0 [pid 5855] mkdir("./file0", 0777) = 0 [pid 5855] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5855] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5855] chdir("./file0") = 0 [pid 5855] ioctl(4, LOOP_CLR_FD) = 0 [pid 5855] close(4) = 0 [ 174.558799][ T5855] loop0: detected capacity change from 0 to 2048 [ 174.574460][ T5856] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 174.584073][ T5855] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 174.598441][ T5855] Remounting filesystem read-only [pid 5855] creat("./file2", 040) = 4 [pid 5855] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5855] exit_group(0) = ? [pid 5855] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5855, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./411", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./411", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./411/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./411/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./411/binderfs") = 0 [ 174.604569][ T5855] NILFS (loop0): error -5 truncating bmap (ino=16) [ 174.614259][ T5855] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 174.628016][ T5855] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 174.637846][ T5855] NILFS (loop0): error -5 truncating bmap (ino=16) [ 174.655938][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 174.663014][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 174.670947][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 174.680537][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 174.690437][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 174.700269][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer umount2("./411/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./411/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./411/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./411/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./411/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./411/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./411") = 0 mkdir("./412", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5857 ./strace-static-x86_64: Process 5857 attached [pid 5857] set_robust_list(0x555556375660, 24) = 0 [pid 5857] chdir("./412") = 0 [pid 5857] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5857] setpgid(0, 0) = 0 [pid 5857] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5857] write(3, "1000", 4) = 4 [pid 5857] close(3) = 0 [pid 5857] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5857] memfd_create("syzkaller", 0) = 3 [pid 5857] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5857] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5857] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5857] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5857] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5857] close(3) = 0 [pid 5857] mkdir("./file0", 0777) = 0 [pid 5857] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5857] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5857] chdir("./file0") = 0 [pid 5857] ioctl(4, LOOP_CLR_FD) = 0 [pid 5857] close(4) = 0 [ 174.798116][ T5857] loop0: detected capacity change from 0 to 2048 [ 174.815308][ T5858] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 174.833425][ T5857] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 174.843358][ T5857] Remounting filesystem read-only [pid 5857] creat("./file2", 040) = 4 [pid 5857] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5857] exit_group(0) = ? [pid 5857] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5857, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./412", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./412", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./412/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./412/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./412/binderfs") = 0 [ 174.848605][ T5857] NILFS (loop0): error -5 truncating bmap (ino=16) [ 174.856931][ T5857] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 174.867705][ T5857] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 174.877234][ T5857] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./412/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./412/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./412/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./412/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./412/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./412/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./412") = 0 mkdir("./413", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5859 ./strace-static-x86_64: Process 5859 attached [pid 5859] set_robust_list(0x555556375660, 24) = 0 [pid 5859] chdir("./413") = 0 [pid 5859] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5859] setpgid(0, 0) = 0 [pid 5859] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5859] write(3, "1000", 4) = 4 [pid 5859] close(3) = 0 [pid 5859] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5859] memfd_create("syzkaller", 0) = 3 [ 174.893348][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 174.900529][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 174.907992][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 174.917484][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 174.928195][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 174.937433][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5859] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5859] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5859] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5859] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5859] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5859] close(3) = 0 [pid 5859] mkdir("./file0", 0777) = 0 [pid 5859] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5859] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5859] chdir("./file0") = 0 [pid 5859] ioctl(4, LOOP_CLR_FD) = 0 [pid 5859] close(4) = 0 [ 174.999777][ T5859] loop0: detected capacity change from 0 to 2048 [ 175.017293][ T5860] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 175.034456][ T5859] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5859] creat("./file2", 040) = 4 [pid 5859] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5859] exit_group(0) = ? [pid 5859] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5859, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- umount2("./413", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./413", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./413/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./413/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./413/binderfs") = 0 [ 175.045722][ T5859] Remounting filesystem read-only [ 175.050896][ T5859] NILFS (loop0): error -5 truncating bmap (ino=16) [ 175.059485][ T5859] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 175.069655][ T5859] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 175.079325][ T5859] NILFS (loop0): error -5 truncating bmap (ino=16) [ 175.095893][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 175.104052][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 175.111632][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 175.121850][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 175.131644][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 175.141111][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer umount2("./413/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./413/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./413/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./413/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./413/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./413/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./413") = 0 mkdir("./414", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5861 ./strace-static-x86_64: Process 5861 attached [pid 5861] set_robust_list(0x555556375660, 24) = 0 [pid 5861] chdir("./414") = 0 [pid 5861] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5861] setpgid(0, 0) = 0 [pid 5861] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5861] write(3, "1000", 4) = 4 [pid 5861] close(3) = 0 [pid 5861] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5861] memfd_create("syzkaller", 0) = 3 [pid 5861] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5861] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5861] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5861] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5861] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5861] close(3) = 0 [pid 5861] mkdir("./file0", 0777) = 0 [pid 5861] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5861] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5861] chdir("./file0") = 0 [pid 5861] ioctl(4, LOOP_CLR_FD) = 0 [pid 5861] close(4) = 0 [ 175.217850][ T5861] loop0: detected capacity change from 0 to 2048 [ 175.234318][ T5862] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 175.243463][ T5861] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 175.256362][ T5861] Remounting filesystem read-only [pid 5861] creat("./file2", 040) = 4 [pid 5861] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5861] exit_group(0) = ? [pid 5861] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5861, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./414", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./414", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./414/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./414/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./414/binderfs") = 0 [ 175.262090][ T5861] NILFS (loop0): error -5 truncating bmap (ino=16) [ 175.271819][ T5861] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 175.282825][ T5861] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 175.293103][ T5861] NILFS (loop0): error -5 truncating bmap (ino=16) [ 175.310103][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./414/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./414/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./414/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./414/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./414/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./414/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./414") = 0 mkdir("./415", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5863 ./strace-static-x86_64: Process 5863 attached [pid 5863] set_robust_list(0x555556375660, 24) = 0 [pid 5863] chdir("./415") = 0 [pid 5863] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5863] setpgid(0, 0) = 0 [ 175.317712][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 175.325353][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 175.334290][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 175.343987][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 175.353128][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5863] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5863] write(3, "1000", 4) = 4 [pid 5863] close(3) = 0 [pid 5863] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5863] memfd_create("syzkaller", 0) = 3 [pid 5863] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5863] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5863] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5863] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5863] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5863] close(3) = 0 [pid 5863] mkdir("./file0", 0777) = 0 [pid 5863] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5863] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5863] chdir("./file0") = 0 [pid 5863] ioctl(4, LOOP_CLR_FD) = 0 [pid 5863] close(4) = 0 [pid 5863] creat("./file2", 040) = 4 [ 175.430008][ T5863] loop0: detected capacity change from 0 to 2048 [ 175.446533][ T5864] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 175.455381][ T5863] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 175.467459][ T5863] Remounting filesystem read-only [ 175.472839][ T5863] NILFS (loop0): error -5 truncating bmap (ino=16) [pid 5863] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5863] exit_group(0) = ? [pid 5863] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5863, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./415", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./415", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./415/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./415/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./415/binderfs") = 0 [ 175.492659][ T5863] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 175.502885][ T5863] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 175.512682][ T5863] NILFS (loop0): error -5 truncating bmap (ino=16) [ 175.528822][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./415/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./415/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./415/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./415/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./415/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./415/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./415") = 0 mkdir("./416", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5865 ./strace-static-x86_64: Process 5865 attached [pid 5865] set_robust_list(0x555556375660, 24) = 0 [pid 5865] chdir("./416") = 0 [pid 5865] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5865] setpgid(0, 0) = 0 [pid 5865] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [ 175.536249][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 175.543741][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 175.553414][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 175.562383][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 175.571770][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5865] write(3, "1000", 4) = 4 [pid 5865] close(3) = 0 [pid 5865] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5865] memfd_create("syzkaller", 0) = 3 [pid 5865] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5865] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5865] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5865] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5865] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5865] close(3) = 0 [pid 5865] mkdir("./file0", 0777) = 0 [pid 5865] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5865] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5865] chdir("./file0") = 0 [pid 5865] ioctl(4, LOOP_CLR_FD) = 0 [pid 5865] close(4) = 0 [ 175.653275][ T5865] loop0: detected capacity change from 0 to 2048 [ 175.669028][ T5866] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5865] creat("./file2", 040) = 4 [pid 5865] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5865] exit_group(0) = ? [pid 5865] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5865, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./416", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./416", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./416/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./416/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./416/binderfs") = 0 [ 175.694291][ T5865] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 175.704806][ T5865] Remounting filesystem read-only [ 175.710081][ T5865] NILFS (loop0): error -5 truncating bmap (ino=16) [ 175.719724][ T5865] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 175.730659][ T5865] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 175.739952][ T5865] NILFS (loop0): error -5 truncating bmap (ino=16) [ 175.766427][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 175.773488][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 175.780804][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 175.790832][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 175.803507][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./416/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./416/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./416/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./416/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./416/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./416/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./416") = 0 mkdir("./417", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5867 ./strace-static-x86_64: Process 5867 attached [pid 5867] set_robust_list(0x555556375660, 24) = 0 [pid 5867] chdir("./417") = 0 [pid 5867] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5867] setpgid(0, 0) = 0 [pid 5867] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5867] write(3, "1000", 4) = 4 [pid 5867] close(3) = 0 [pid 5867] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5867] memfd_create("syzkaller", 0) = 3 [ 175.815135][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5867] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5867] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5867] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5867] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5867] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5867] close(3) = 0 [pid 5867] mkdir("./file0", 0777) = 0 [pid 5867] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5867] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5867] chdir("./file0") = 0 [pid 5867] ioctl(4, LOOP_CLR_FD) = 0 [pid 5867] close(4) = 0 [ 175.897232][ T5867] loop0: detected capacity change from 0 to 2048 [ 175.915634][ T5868] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 175.932156][ T5867] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5867] creat("./file2", 040) = 4 [pid 5867] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5867] exit_group(0) = ? [pid 5867] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5867, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./417", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./417", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./417/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./417/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./417/binderfs") = 0 [ 175.942963][ T5867] Remounting filesystem read-only [ 175.948911][ T5867] NILFS (loop0): error -5 truncating bmap (ino=16) [ 175.959345][ T5867] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 175.969761][ T5867] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 175.980424][ T5867] NILFS (loop0): error -5 truncating bmap (ino=16) [ 175.999397][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 176.007075][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 176.014883][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 176.024029][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 176.033205][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./417/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./417/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./417/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./417/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./417/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./417/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./417") = 0 mkdir("./418", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5869 ./strace-static-x86_64: Process 5869 attached [pid 5869] set_robust_list(0x555556375660, 24) = 0 [pid 5869] chdir("./418") = 0 [ 176.043318][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5869] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5869] setpgid(0, 0) = 0 [pid 5869] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5869] write(3, "1000", 4) = 4 [pid 5869] close(3) = 0 [pid 5869] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5869] memfd_create("syzkaller", 0) = 3 [pid 5869] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5869] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5869] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5869] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5869] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5869] close(3) = 0 [pid 5869] mkdir("./file0", 0777) = 0 [pid 5869] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5869] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5869] chdir("./file0") = 0 [pid 5869] ioctl(4, LOOP_CLR_FD) = 0 [pid 5869] close(4) = 0 [ 176.124533][ T5869] loop0: detected capacity change from 0 to 2048 [ 176.140951][ T5870] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 176.164252][ T5869] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5869] creat("./file2", 040) = 4 [pid 5869] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5869] exit_group(0) = ? [pid 5869] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5869, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./418", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./418", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./418/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./418/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./418/binderfs") = 0 [ 176.174588][ T5869] Remounting filesystem read-only [ 176.180464][ T5869] NILFS (loop0): error -5 truncating bmap (ino=16) [ 176.189404][ T5869] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 176.200244][ T5869] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 176.210125][ T5869] NILFS (loop0): error -5 truncating bmap (ino=16) [ 176.225998][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 176.233377][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 176.240811][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 176.250539][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 176.259652][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./418/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./418/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./418/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./418/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./418/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./418/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./418") = 0 mkdir("./419", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5871 ./strace-static-x86_64: Process 5871 attached [pid 5871] set_robust_list(0x555556375660, 24) = 0 [pid 5871] chdir("./419") = 0 [pid 5871] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5871] setpgid(0, 0) = 0 [pid 5871] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5871] write(3, "1000", 4) = 4 [pid 5871] close(3) = 0 [pid 5871] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5871] memfd_create("syzkaller", 0) = 3 [pid 5871] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 176.269193][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5871] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5871] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5871] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5871] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5871] close(3) = 0 [pid 5871] mkdir("./file0", 0777) = 0 [pid 5871] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5871] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5871] chdir("./file0") = 0 [pid 5871] ioctl(4, LOOP_CLR_FD) = 0 [pid 5871] close(4) = 0 [ 176.329334][ T5871] loop0: detected capacity change from 0 to 2048 [ 176.345888][ T5872] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 176.363967][ T5871] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 176.374658][ T5871] Remounting filesystem read-only [pid 5871] creat("./file2", 040) = 4 [pid 5871] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5871] exit_group(0) = ? [pid 5871] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5871, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./419", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./419", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./419/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./419/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./419/binderfs") = 0 [ 176.380390][ T5871] NILFS (loop0): error -5 truncating bmap (ino=16) [ 176.388621][ T5871] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 176.399624][ T5871] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 176.409195][ T5871] NILFS (loop0): error -5 truncating bmap (ino=16) [ 176.429510][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 176.436597][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 176.444349][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 176.453926][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 176.462875][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./419/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./419/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./419/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./419/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./419/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./419/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./419") = 0 mkdir("./420", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 [ 176.472131][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5873 ./strace-static-x86_64: Process 5873 attached [pid 5873] set_robust_list(0x555556375660, 24) = 0 [pid 5873] chdir("./420") = 0 [pid 5873] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5873] setpgid(0, 0) = 0 [pid 5873] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5873] write(3, "1000", 4) = 4 [pid 5873] close(3) = 0 [pid 5873] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5873] memfd_create("syzkaller", 0) = 3 [pid 5873] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5873] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5873] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5873] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5873] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5873] close(3) = 0 [pid 5873] mkdir("./file0", 0777) = 0 [pid 5873] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5873] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5873] chdir("./file0") = 0 [pid 5873] ioctl(4, LOOP_CLR_FD) = 0 [pid 5873] close(4) = 0 [ 176.566793][ T5873] loop0: detected capacity change from 0 to 2048 [ 176.583152][ T5874] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 176.603064][ T5873] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5873] creat("./file2", 040) = 4 [pid 5873] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5873] exit_group(0) = ? [pid 5873] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5873, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./420", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./420", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./420/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./420/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./420/binderfs") = 0 [ 176.614500][ T5873] Remounting filesystem read-only [ 176.620048][ T5873] NILFS (loop0): error -5 truncating bmap (ino=16) [ 176.628502][ T5873] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 176.638696][ T5873] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 176.648915][ T5873] NILFS (loop0): error -5 truncating bmap (ino=16) [ 176.663747][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 176.670749][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 176.678535][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 176.689284][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 176.700548][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./420/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./420/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./420/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./420/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./420/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./420/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./420") = 0 mkdir("./421", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5875 ./strace-static-x86_64: Process 5875 attached [pid 5875] set_robust_list(0x555556375660, 24) = 0 [pid 5875] chdir("./421") = 0 [pid 5875] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5875] setpgid(0, 0) = 0 [pid 5875] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5875] write(3, "1000", 4) = 4 [pid 5875] close(3) = 0 [pid 5875] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5875] memfd_create("syzkaller", 0) = 3 [pid 5875] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 176.710055][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5875] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5875] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5875] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5875] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5875] close(3) = 0 [pid 5875] mkdir("./file0", 0777) = 0 [pid 5875] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5875] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5875] chdir("./file0") = 0 [pid 5875] ioctl(4, LOOP_CLR_FD) = 0 [pid 5875] close(4) = 0 [ 176.774246][ T5875] loop0: detected capacity change from 0 to 2048 [ 176.791782][ T5876] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 176.804454][ T5875] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 176.815109][ T5875] Remounting filesystem read-only [pid 5875] creat("./file2", 040) = 4 [pid 5875] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5875] exit_group(0) = ? [pid 5875] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5875, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./421", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./421", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./421/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./421/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./421/binderfs") = 0 [ 176.820299][ T5875] NILFS (loop0): error -5 truncating bmap (ino=16) [ 176.829024][ T5875] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 176.839321][ T5875] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 176.848659][ T5875] NILFS (loop0): error -5 truncating bmap (ino=16) [ 176.863462][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./421/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./421/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./421/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./421/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./421/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./421/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./421") = 0 mkdir("./422", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5877 ./strace-static-x86_64: Process 5877 attached [pid 5877] set_robust_list(0x555556375660, 24) = 0 [pid 5877] chdir("./422") = 0 [pid 5877] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5877] setpgid(0, 0) = 0 [pid 5877] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5877] write(3, "1000", 4) = 4 [pid 5877] close(3) = 0 [pid 5877] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5877] memfd_create("syzkaller", 0) = 3 [pid 5877] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 176.870475][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 176.878450][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 176.887740][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 176.896758][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 176.906101][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5877] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5877] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5877] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5877] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5877] close(3) = 0 [pid 5877] mkdir("./file0", 0777) = 0 [pid 5877] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5877] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5877] chdir("./file0") = 0 [pid 5877] ioctl(4, LOOP_CLR_FD) = 0 [pid 5877] close(4) = 0 [ 176.972233][ T5877] loop0: detected capacity change from 0 to 2048 [ 176.987801][ T5878] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 176.992955][ T5877] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 177.011096][ T5877] Remounting filesystem read-only [pid 5877] creat("./file2", 040) = 4 [pid 5877] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5877] exit_group(0) = ? [pid 5877] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5877, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./422", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./422", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./422/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./422/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./422/binderfs") = 0 [ 177.017357][ T5877] NILFS (loop0): error -5 truncating bmap (ino=16) [ 177.025186][ T5877] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 177.035121][ T5877] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 177.044657][ T5877] NILFS (loop0): error -5 truncating bmap (ino=16) [ 177.063373][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./422/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./422/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./422/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./422/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./422/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./422/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./422") = 0 mkdir("./423", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5879 [ 177.070356][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 177.078185][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 177.087162][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 177.096349][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 177.105818][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer ./strace-static-x86_64: Process 5879 attached [pid 5879] set_robust_list(0x555556375660, 24) = 0 [pid 5879] chdir("./423") = 0 [pid 5879] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5879] setpgid(0, 0) = 0 [pid 5879] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5879] write(3, "1000", 4) = 4 [pid 5879] close(3) = 0 [pid 5879] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5879] memfd_create("syzkaller", 0) = 3 [pid 5879] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5879] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5879] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5879] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5879] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5879] close(3) = 0 [pid 5879] mkdir("./file0", 0777) = 0 [pid 5879] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5879] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5879] chdir("./file0") = 0 [pid 5879] ioctl(4, LOOP_CLR_FD) = 0 [pid 5879] close(4) = 0 [ 177.188587][ T5879] loop0: detected capacity change from 0 to 2048 [ 177.204846][ T5880] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5879] creat("./file2", 040) = 4 [pid 5879] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5879] exit_group(0) = ? [pid 5879] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5879, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./423", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./423", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./423/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./423/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./423/binderfs") = 0 [ 177.234511][ T5879] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 177.244923][ T5879] Remounting filesystem read-only [ 177.250007][ T5879] NILFS (loop0): error -5 truncating bmap (ino=16) [ 177.258481][ T5879] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 177.269069][ T5879] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 177.279222][ T5879] NILFS (loop0): error -5 truncating bmap (ino=16) [ 177.295773][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 177.302888][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 177.310421][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 177.320049][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 177.329201][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./423/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./423/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./423/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./423/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./423/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./423/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./423") = 0 mkdir("./424", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5881 ./strace-static-x86_64: Process 5881 attached [pid 5881] set_robust_list(0x555556375660, 24) = 0 [pid 5881] chdir("./424") = 0 [pid 5881] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5881] setpgid(0, 0) = 0 [pid 5881] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5881] write(3, "1000", 4) = 4 [pid 5881] close(3) = 0 [ 177.338766][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5881] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5881] memfd_create("syzkaller", 0) = 3 [pid 5881] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5881] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5881] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5881] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5881] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5881] close(3) = 0 [pid 5881] mkdir("./file0", 0777) = 0 [pid 5881] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5881] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5881] chdir("./file0") = 0 [pid 5881] ioctl(4, LOOP_CLR_FD) = 0 [pid 5881] close(4) = 0 [ 177.420395][ T5881] loop0: detected capacity change from 0 to 2048 [ 177.437829][ T5882] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 177.445868][ T5881] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 177.460271][ T5881] Remounting filesystem read-only [pid 5881] creat("./file2", 040) = 4 [pid 5881] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5881] exit_group(0) = ? [pid 5881] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5881, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./424", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./424", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./424/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./424/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./424/binderfs") = 0 [ 177.471573][ T5881] NILFS (loop0): error -5 truncating bmap (ino=16) [ 177.480244][ T5881] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 177.490372][ T5881] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 177.499869][ T5881] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./424/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./424/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./424/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./424/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./424/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./424/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./424") = 0 mkdir("./425", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5883 ./strace-static-x86_64: Process 5883 attached [pid 5883] set_robust_list(0x555556375660, 24) = 0 [pid 5883] chdir("./425") = 0 [pid 5883] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5883] setpgid(0, 0) = 0 [pid 5883] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5883] write(3, "1000", 4) = 4 [pid 5883] close(3) = 0 [pid 5883] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5883] memfd_create("syzkaller", 0) = 3 [pid 5883] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 177.518625][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 177.525688][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 177.533083][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 177.542027][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 177.550908][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 177.560149][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5883] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5883] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5883] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5883] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5883] close(3) = 0 [pid 5883] mkdir("./file0", 0777) = 0 [pid 5883] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5883] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5883] chdir("./file0") = 0 [pid 5883] ioctl(4, LOOP_CLR_FD) = 0 [pid 5883] close(4) = 0 [ 177.634719][ T5883] loop0: detected capacity change from 0 to 2048 [ 177.650070][ T5884] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 177.663147][ T5883] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 177.673438][ T5883] Remounting filesystem read-only [ 177.678625][ T5883] NILFS (loop0): error -5 truncating bmap (ino=16) [pid 5883] creat("./file2", 040) = 4 [pid 5883] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5883] exit_group(0) = ? [pid 5883] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5883, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./425", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./425", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./425/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./425/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./425/binderfs") = 0 [ 177.686317][ T5883] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 177.696778][ T5883] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 177.706168][ T5883] NILFS (loop0): error -5 truncating bmap (ino=16) [ 177.724896][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./425/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./425/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./425/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./425/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./425/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./425/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./425") = 0 mkdir("./426", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5885 ./strace-static-x86_64: Process 5885 attached [pid 5885] set_robust_list(0x555556375660, 24) = 0 [pid 5885] chdir("./426") = 0 [pid 5885] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [ 177.732109][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 177.739414][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 177.748426][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 177.757389][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 177.766589][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5885] setpgid(0, 0) = 0 [pid 5885] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5885] write(3, "1000", 4) = 4 [pid 5885] close(3) = 0 [pid 5885] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5885] memfd_create("syzkaller", 0) = 3 [pid 5885] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5885] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5885] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5885] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5885] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5885] close(3) = 0 [pid 5885] mkdir("./file0", 0777) = 0 [pid 5885] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5885] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5885] chdir("./file0") = 0 [pid 5885] ioctl(4, LOOP_CLR_FD) = 0 [pid 5885] close(4) = 0 [ 177.847226][ T5885] loop0: detected capacity change from 0 to 2048 [ 177.863156][ T5886] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 177.877787][ T5885] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 177.888213][ T5885] Remounting filesystem read-only [pid 5885] creat("./file2", 040) = 4 [pid 5885] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5885] exit_group(0) = ? [pid 5885] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5885, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./426", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./426", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./426/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./426/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./426/binderfs") = 0 [ 177.894078][ T5885] NILFS (loop0): error -5 truncating bmap (ino=16) [ 177.902258][ T5885] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 177.912654][ T5885] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 177.922704][ T5885] NILFS (loop0): error -5 truncating bmap (ino=16) [ 177.939732][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./426/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./426/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./426/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./426/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./426/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./426/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./426") = 0 mkdir("./427", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 177.947171][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 177.955754][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 177.965056][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 177.974385][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 177.984114][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5887 ./strace-static-x86_64: Process 5887 attached [pid 5887] set_robust_list(0x555556375660, 24) = 0 [pid 5887] chdir("./427") = 0 [pid 5887] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5887] setpgid(0, 0) = 0 [pid 5887] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5887] write(3, "1000", 4) = 4 [pid 5887] close(3) = 0 [pid 5887] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5887] memfd_create("syzkaller", 0) = 3 [pid 5887] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5887] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5887] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5887] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5887] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5887] close(3) = 0 [pid 5887] mkdir("./file0", 0777) = 0 [pid 5887] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5887] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5887] chdir("./file0") = 0 [pid 5887] ioctl(4, LOOP_CLR_FD) = 0 [pid 5887] close(4) = 0 [ 178.060139][ T5887] loop0: detected capacity change from 0 to 2048 [ 178.075899][ T5888] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 178.095740][ T5887] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5887] creat("./file2", 040) = 4 [pid 5887] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5887] exit_group(0) = ? [pid 5887] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5887, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./427", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./427", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./427/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./427/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./427/binderfs") = 0 [ 178.105978][ T5887] Remounting filesystem read-only [ 178.111156][ T5887] NILFS (loop0): error -5 truncating bmap (ino=16) [ 178.119541][ T5887] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 178.130819][ T5887] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 178.140739][ T5887] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./427/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./427/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./427/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./427/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./427/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./427/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./427") = 0 mkdir("./428", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5889 ./strace-static-x86_64: Process 5889 attached [ 178.155484][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 178.162527][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 178.169821][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 178.179570][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 178.188808][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 178.199578][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5889] set_robust_list(0x555556375660, 24) = 0 [pid 5889] chdir("./428") = 0 [pid 5889] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5889] setpgid(0, 0) = 0 [pid 5889] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5889] write(3, "1000", 4) = 4 [pid 5889] close(3) = 0 [pid 5889] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5889] memfd_create("syzkaller", 0) = 3 [pid 5889] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5889] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5889] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5889] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5889] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5889] close(3) = 0 [pid 5889] mkdir("./file0", 0777) = 0 [pid 5889] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5889] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5889] chdir("./file0") = 0 [pid 5889] ioctl(4, LOOP_CLR_FD) = 0 [pid 5889] close(4) = 0 [ 178.276061][ T5889] loop0: detected capacity change from 0 to 2048 [ 178.293106][ T5890] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 178.313950][ T5889] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5889] creat("./file2", 040) = 4 [pid 5889] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5889] exit_group(0) = ? [pid 5889] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5889, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./428", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./428", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./428/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./428/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./428/binderfs") = 0 [ 178.324961][ T5889] Remounting filesystem read-only [ 178.330057][ T5889] NILFS (loop0): error -5 truncating bmap (ino=16) [ 178.338787][ T5889] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 178.348927][ T5889] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 178.358249][ T5889] NILFS (loop0): error -5 truncating bmap (ino=16) [ 178.375824][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 178.382914][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 178.390660][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 178.400352][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 178.409555][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./428/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./428/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./428/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./428/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./428/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./428/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./428") = 0 mkdir("./429", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5891 ./strace-static-x86_64: Process 5891 attached [pid 5891] set_robust_list(0x555556375660, 24) = 0 [ 178.418773][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5891] chdir("./429") = 0 [pid 5891] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5891] setpgid(0, 0) = 0 [pid 5891] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5891] write(3, "1000", 4) = 4 [pid 5891] close(3) = 0 [pid 5891] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5891] memfd_create("syzkaller", 0) = 3 [pid 5891] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5891] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5891] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5891] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5891] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5891] close(3) = 0 [pid 5891] mkdir("./file0", 0777) = 0 [pid 5891] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5891] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5891] chdir("./file0") = 0 [pid 5891] ioctl(4, LOOP_CLR_FD) = 0 [pid 5891] close(4) = 0 [ 178.499153][ T5891] loop0: detected capacity change from 0 to 2048 [ 178.516451][ T5892] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 178.529893][ T5891] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 178.540164][ T5891] Remounting filesystem read-only [pid 5891] creat("./file2", 040) = 4 [pid 5891] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5891] exit_group(0) = ? [pid 5891] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5891, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./429", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./429", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./429/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./429/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./429/binderfs") = 0 [ 178.545461][ T5891] NILFS (loop0): error -5 truncating bmap (ino=16) [ 178.553186][ T5891] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 178.563266][ T5891] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 178.573348][ T5891] NILFS (loop0): error -5 truncating bmap (ino=16) [ 178.589101][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./429/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./429/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./429/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./429/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./429/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./429/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./429") = 0 mkdir("./430", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5893 ./strace-static-x86_64: Process 5893 attached [pid 5893] set_robust_list(0x555556375660, 24) = 0 [pid 5893] chdir("./430") = 0 [pid 5893] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5893] setpgid(0, 0) = 0 [pid 5893] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5893] write(3, "1000", 4) = 4 [pid 5893] close(3) = 0 [pid 5893] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5893] memfd_create("syzkaller", 0) = 3 [pid 5893] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 178.596158][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 178.603750][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 178.612956][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 178.621906][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 178.631005][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5893] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5893] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5893] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5893] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5893] close(3) = 0 [pid 5893] mkdir("./file0", 0777) = 0 [pid 5893] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5893] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5893] chdir("./file0") = 0 [pid 5893] ioctl(4, LOOP_CLR_FD) = 0 [pid 5893] close(4) = 0 [pid 5893] creat("./file2", 040) = 4 [ 178.689616][ T5893] loop0: detected capacity change from 0 to 2048 [ 178.706719][ T5894] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 178.717147][ T5893] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 178.727734][ T5893] Remounting filesystem read-only [ 178.733035][ T5893] NILFS (loop0): error -5 truncating bmap (ino=16) [pid 5893] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5893] exit_group(0) = ? [pid 5893] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5893, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./430", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./430", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./430/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./430/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./430/binderfs") = 0 [ 178.741894][ T5893] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 178.752162][ T5893] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 178.761492][ T5893] NILFS (loop0): error -5 truncating bmap (ino=16) [ 178.782835][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./430/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./430/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./430/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./430/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./430/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./430/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./430") = 0 mkdir("./431", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5895 ./strace-static-x86_64: Process 5895 attached [pid 5895] set_robust_list(0x555556375660, 24) = 0 [pid 5895] chdir("./431") = 0 [ 178.789989][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 178.797928][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 178.806939][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 178.816050][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 178.825337][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5895] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5895] setpgid(0, 0) = 0 [pid 5895] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5895] write(3, "1000", 4) = 4 [pid 5895] close(3) = 0 [pid 5895] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5895] memfd_create("syzkaller", 0) = 3 [pid 5895] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5895] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5895] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5895] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5895] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5895] close(3) = 0 [pid 5895] mkdir("./file0", 0777) = 0 [pid 5895] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5895] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5895] chdir("./file0") = 0 [pid 5895] ioctl(4, LOOP_CLR_FD) = 0 [pid 5895] close(4) = 0 [ 178.907596][ T5895] loop0: detected capacity change from 0 to 2048 [ 178.925429][ T5896] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 178.938395][ T5895] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 178.948941][ T5895] Remounting filesystem read-only [pid 5895] creat("./file2", 040) = 4 [pid 5895] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5895] exit_group(0) = ? [pid 5895] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5895, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./431", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./431", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./431/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./431/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./431/binderfs") = 0 [ 178.955159][ T5895] NILFS (loop0): error -5 truncating bmap (ino=16) [ 178.965642][ T5895] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 178.975702][ T5895] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 178.986345][ T5895] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./431/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./431/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./431/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./431/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./431/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./431/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./431") = 0 mkdir("./432", 0777) = 0 [ 179.001202][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 179.010151][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 179.018458][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 179.027416][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 179.036545][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 179.045741][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5897 ./strace-static-x86_64: Process 5897 attached [pid 5897] set_robust_list(0x555556375660, 24) = 0 [pid 5897] chdir("./432") = 0 [pid 5897] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5897] setpgid(0, 0) = 0 [pid 5897] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5897] write(3, "1000", 4) = 4 [pid 5897] close(3) = 0 [pid 5897] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5897] memfd_create("syzkaller", 0) = 3 [pid 5897] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5897] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5897] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5897] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5897] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5897] close(3) = 0 [pid 5897] mkdir("./file0", 0777) = 0 [pid 5897] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5897] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5897] chdir("./file0") = 0 [pid 5897] ioctl(4, LOOP_CLR_FD) = 0 [pid 5897] close(4) = 0 [ 179.130572][ T5897] loop0: detected capacity change from 0 to 2048 [ 179.150720][ T5898] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 179.163458][ T5897] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 179.174462][ T5897] Remounting filesystem read-only [pid 5897] creat("./file2", 040) = 4 [pid 5897] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5897] exit_group(0) = ? [pid 5897] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5897, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./432", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./432", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./432/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./432/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./432/binderfs") = 0 [ 179.179553][ T5897] NILFS (loop0): error -5 truncating bmap (ino=16) [ 179.187073][ T5897] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 179.197373][ T5897] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 179.206588][ T5897] NILFS (loop0): error -5 truncating bmap (ino=16) [ 179.223164][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./432/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./432/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./432/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./432/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./432/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./432/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./432") = 0 mkdir("./433", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5899 ./strace-static-x86_64: Process 5899 attached [pid 5899] set_robust_list(0x555556375660, 24) = 0 [pid 5899] chdir("./433") = 0 [pid 5899] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5899] setpgid(0, 0) = 0 [ 179.230174][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 179.237654][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 179.246695][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 179.255683][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 179.264956][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5899] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5899] write(3, "1000", 4) = 4 [pid 5899] close(3) = 0 [pid 5899] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5899] memfd_create("syzkaller", 0) = 3 [pid 5899] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5899] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5899] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5899] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5899] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5899] close(3) = 0 [pid 5899] mkdir("./file0", 0777) = 0 [pid 5899] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5899] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5899] chdir("./file0") = 0 [pid 5899] ioctl(4, LOOP_CLR_FD) = 0 [pid 5899] close(4) = 0 [pid 5899] creat("./file2", 040) = 4 [ 179.337735][ T5899] loop0: detected capacity change from 0 to 2048 [ 179.353473][ T5900] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 179.357425][ T5899] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 179.374591][ T5899] Remounting filesystem read-only [ 179.380891][ T5899] NILFS (loop0): error -5 truncating bmap (ino=16) [pid 5899] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5899] exit_group(0) = ? [pid 5899] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5899, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- umount2("./433", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./433", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./433/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./433/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./433/binderfs") = 0 [ 179.389032][ T5899] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 179.399713][ T5899] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 179.409099][ T5899] NILFS (loop0): error -5 truncating bmap (ino=16) [ 179.423621][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 179.430735][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 umount2("./433/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./433/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./433/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./433/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./433/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./433/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./433") = 0 mkdir("./434", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5901 ./strace-static-x86_64: Process 5901 attached [pid 5901] set_robust_list(0x555556375660, 24) = 0 [pid 5901] chdir("./434") = 0 [pid 5901] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5901] setpgid(0, 0) = 0 [pid 5901] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5901] write(3, "1000", 4) = 4 [pid 5901] close(3) = 0 [pid 5901] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5901] memfd_create("syzkaller", 0) = 3 [pid 5901] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 179.438124][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 179.447061][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 179.456001][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 179.465110][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5901] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5901] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5901] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5901] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5901] close(3) = 0 [pid 5901] mkdir("./file0", 0777) = 0 [pid 5901] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5901] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5901] chdir("./file0") = 0 [pid 5901] ioctl(4, LOOP_CLR_FD) = 0 [pid 5901] close(4) = 0 [ 179.528012][ T5901] loop0: detected capacity change from 0 to 2048 [ 179.543632][ T5902] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 179.568548][ T5901] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5901] creat("./file2", 040) = 4 [pid 5901] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5901] exit_group(0) = ? [pid 5901] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5901, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./434", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./434", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./434/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./434/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./434/binderfs") = 0 [ 179.579027][ T5901] Remounting filesystem read-only [ 179.585413][ T5901] NILFS (loop0): error -5 truncating bmap (ino=16) [ 179.595388][ T5901] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 179.605779][ T5901] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 179.615582][ T5901] NILFS (loop0): error -5 truncating bmap (ino=16) [ 179.632154][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 179.639369][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 179.646884][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 179.656025][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 179.665003][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./434/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./434/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./434/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./434/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./434/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./434/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./434") = 0 mkdir("./435", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5903 ./strace-static-x86_64: Process 5903 attached [pid 5903] set_robust_list(0x555556375660, 24) = 0 [pid 5903] chdir("./435") = 0 [pid 5903] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5903] setpgid(0, 0) = 0 [pid 5903] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5903] write(3, "1000", 4) = 4 [pid 5903] close(3) = 0 [pid 5903] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5903] memfd_create("syzkaller", 0) = 3 [pid 5903] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 179.674371][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5903] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5903] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5903] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5903] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5903] close(3) = 0 [pid 5903] mkdir("./file0", 0777) = 0 [pid 5903] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5903] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5903] chdir("./file0") = 0 [pid 5903] ioctl(4, LOOP_CLR_FD) = 0 [pid 5903] close(4) = 0 [ 179.738642][ T5903] loop0: detected capacity change from 0 to 2048 [ 179.755675][ T5904] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 179.766522][ T5903] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 179.777223][ T5903] Remounting filesystem read-only [pid 5903] creat("./file2", 040) = 4 [pid 5903] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5903] exit_group(0) = ? [pid 5903] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5903, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./435", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./435", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./435/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./435/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./435/binderfs") = 0 [ 179.783600][ T5903] NILFS (loop0): error -5 truncating bmap (ino=16) [ 179.792545][ T5903] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 179.803312][ T5903] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 179.812842][ T5903] NILFS (loop0): error -5 truncating bmap (ino=16) [ 179.828859][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./435/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./435/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./435/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./435/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./435/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./435/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./435") = 0 mkdir("./436", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 179.836173][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 179.843570][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 179.852515][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 179.861376][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 179.870537][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5905 ./strace-static-x86_64: Process 5905 attached [pid 5905] set_robust_list(0x555556375660, 24) = 0 [pid 5905] chdir("./436") = 0 [pid 5905] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5905] setpgid(0, 0) = 0 [pid 5905] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5905] write(3, "1000", 4) = 4 [pid 5905] close(3) = 0 [pid 5905] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5905] memfd_create("syzkaller", 0) = 3 [pid 5905] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5905] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5905] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5905] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5905] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5905] close(3) = 0 [pid 5905] mkdir("./file0", 0777) = 0 [pid 5905] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5905] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5905] chdir("./file0") = 0 [pid 5905] ioctl(4, LOOP_CLR_FD) = 0 [pid 5905] close(4) = 0 [ 179.946749][ T5905] loop0: detected capacity change from 0 to 2048 [ 179.963316][ T5906] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 179.980438][ T5905] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5905] creat("./file2", 040) = 4 [pid 5905] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5905] exit_group(0) = ? [pid 5905] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5905, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./436", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./436", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./436/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./436/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./436/binderfs") = 0 [ 179.992138][ T5905] Remounting filesystem read-only [ 179.998233][ T5905] NILFS (loop0): error -5 truncating bmap (ino=16) [ 180.006899][ T5905] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 180.018576][ T5905] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 180.028461][ T5905] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./436/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./436/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./436/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./436/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./436/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./436/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./436") = 0 mkdir("./437", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 180.043378][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 180.050503][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 180.058047][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 180.067195][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 180.076718][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 180.086250][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5907 ./strace-static-x86_64: Process 5907 attached [pid 5907] set_robust_list(0x555556375660, 24) = 0 [pid 5907] chdir("./437") = 0 [pid 5907] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5907] setpgid(0, 0) = 0 [pid 5907] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5907] write(3, "1000", 4) = 4 [pid 5907] close(3) = 0 [pid 5907] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5907] memfd_create("syzkaller", 0) = 3 [pid 5907] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5907] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5907] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5907] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5907] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5907] close(3) = 0 [pid 5907] mkdir("./file0", 0777) = 0 [pid 5907] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5907] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5907] chdir("./file0") = 0 [pid 5907] ioctl(4, LOOP_CLR_FD) = 0 [pid 5907] close(4) = 0 [ 180.169336][ T5907] loop0: detected capacity change from 0 to 2048 [ 180.186393][ T5908] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 180.200557][ T5907] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 180.211065][ T5907] Remounting filesystem read-only [pid 5907] creat("./file2", 040) = 4 [pid 5907] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5907] exit_group(0) = ? [pid 5907] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5907, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- umount2("./437", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./437", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./437/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./437/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./437/binderfs") = 0 [ 180.216881][ T5907] NILFS (loop0): error -5 truncating bmap (ino=16) [ 180.225977][ T5907] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 180.239803][ T5907] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 180.249646][ T5907] NILFS (loop0): error -5 truncating bmap (ino=16) [ 180.268570][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 180.275910][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 180.283684][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 180.292898][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 180.302223][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./437/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./437/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./437/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./437/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./437/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./437/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./437") = 0 mkdir("./438", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5909 ./strace-static-x86_64: Process 5909 attached [pid 5909] set_robust_list(0x555556375660, 24) = 0 [pid 5909] chdir("./438") = 0 [pid 5909] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5909] setpgid(0, 0) = 0 [pid 5909] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5909] write(3, "1000", 4) = 4 [pid 5909] close(3) = 0 [pid 5909] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5909] memfd_create("syzkaller", 0) = 3 [pid 5909] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 180.311521][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5909] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5909] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5909] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5909] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5909] close(3) = 0 [pid 5909] mkdir("./file0", 0777) = 0 [pid 5909] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5909] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5909] chdir("./file0") = 0 [pid 5909] ioctl(4, LOOP_CLR_FD) = 0 [pid 5909] close(4) = 0 [ 180.381224][ T5909] loop0: detected capacity change from 0 to 2048 [ 180.397758][ T5910] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 180.409305][ T5909] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 180.420996][ T5909] Remounting filesystem read-only [pid 5909] creat("./file2", 040) = 4 [pid 5909] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5909] exit_group(0) = ? [pid 5909] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5909, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./438", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./438", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./438/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./438/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./438/binderfs") = 0 [ 180.426773][ T5909] NILFS (loop0): error -5 truncating bmap (ino=16) [ 180.434603][ T5909] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 180.444587][ T5909] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 180.454323][ T5909] NILFS (loop0): error -5 truncating bmap (ino=16) [ 180.471061][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./438/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./438/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./438/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./438/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./438/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./438/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./438") = 0 mkdir("./439", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5911 ./strace-static-x86_64: Process 5911 attached [pid 5911] set_robust_list(0x555556375660, 24) = 0 [pid 5911] chdir("./439") = 0 [pid 5911] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5911] setpgid(0, 0) = 0 [pid 5911] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5911] write(3, "1000", 4) = 4 [pid 5911] close(3) = 0 [pid 5911] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5911] memfd_create("syzkaller", 0) = 3 [pid 5911] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 180.478209][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 180.485986][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 180.494914][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 180.504809][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 180.514447][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5911] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5911] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5911] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5911] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5911] close(3) = 0 [pid 5911] mkdir("./file0", 0777) = 0 [pid 5911] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5911] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5911] chdir("./file0") = 0 [pid 5911] ioctl(4, LOOP_CLR_FD) = 0 [pid 5911] close(4) = 0 [ 180.582224][ T5911] loop0: detected capacity change from 0 to 2048 [ 180.598596][ T5912] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 180.615531][ T5911] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5911] creat("./file2", 040) = 4 [pid 5911] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5911] exit_group(0) = ? [pid 5911] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5911, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./439", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./439", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./439/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./439/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./439/binderfs") = 0 [ 180.628655][ T5911] Remounting filesystem read-only [ 180.634331][ T5911] NILFS (loop0): error -5 truncating bmap (ino=16) [ 180.642300][ T5911] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 180.652472][ T5911] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 180.661951][ T5911] NILFS (loop0): error -5 truncating bmap (ino=16) [ 180.677159][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 180.685489][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 180.694367][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 180.704187][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 180.715622][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./439/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./439/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./439/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./439/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./439/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./439/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./439") = 0 mkdir("./440", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5913 ./strace-static-x86_64: Process 5913 attached [pid 5913] set_robust_list(0x555556375660, 24) = 0 [pid 5913] chdir("./440") = 0 [pid 5913] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5913] setpgid(0, 0) = 0 [ 180.725774][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5913] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5913] write(3, "1000", 4) = 4 [pid 5913] close(3) = 0 [pid 5913] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5913] memfd_create("syzkaller", 0) = 3 [pid 5913] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5913] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5913] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5913] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5913] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5913] close(3) = 0 [pid 5913] mkdir("./file0", 0777) = 0 [pid 5913] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5913] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5913] chdir("./file0") = 0 [pid 5913] ioctl(4, LOOP_CLR_FD) = 0 [pid 5913] close(4) = 0 [ 180.805497][ T5913] loop0: detected capacity change from 0 to 2048 [ 180.821244][ T5914] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 180.842906][ T5913] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5913] creat("./file2", 040) = 4 [pid 5913] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5913] exit_group(0) = ? [pid 5913] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5913, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./440", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./440", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./440/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./440/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./440/binderfs") = 0 [ 180.853012][ T5913] Remounting filesystem read-only [ 180.858119][ T5913] NILFS (loop0): error -5 truncating bmap (ino=16) [ 180.866832][ T5913] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 180.877128][ T5913] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 180.886937][ T5913] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./440/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./440/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./440/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./440/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./440/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./440/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./440") = 0 mkdir("./441", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 180.904039][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 180.911050][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 180.918613][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 180.927589][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 180.936786][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 180.946389][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5915 ./strace-static-x86_64: Process 5915 attached [pid 5915] set_robust_list(0x555556375660, 24) = 0 [pid 5915] chdir("./441") = 0 [pid 5915] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5915] setpgid(0, 0) = 0 [pid 5915] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5915] write(3, "1000", 4) = 4 [pid 5915] close(3) = 0 [pid 5915] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5915] memfd_create("syzkaller", 0) = 3 [pid 5915] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5915] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5915] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5915] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5915] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5915] close(3) = 0 [pid 5915] mkdir("./file0", 0777) = 0 [pid 5915] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5915] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5915] chdir("./file0") = 0 [pid 5915] ioctl(4, LOOP_CLR_FD) = 0 [pid 5915] close(4) = 0 [ 181.020612][ T5915] loop0: detected capacity change from 0 to 2048 [ 181.037976][ T5916] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 181.054301][ T5915] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 181.064764][ T5915] Remounting filesystem read-only [pid 5915] creat("./file2", 040) = 4 [pid 5915] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5915] exit_group(0) = ? [pid 5915] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5915, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./441", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./441", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./441/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./441/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./441/binderfs") = 0 [ 181.070011][ T5915] NILFS (loop0): error -5 truncating bmap (ino=16) [ 181.079218][ T5915] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 181.089527][ T5915] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 181.099945][ T5915] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./441/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./441/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./441/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./441/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./441/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./441/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./441") = 0 mkdir("./442", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5917 ./strace-static-x86_64: Process 5917 attached [ 181.115978][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 181.123686][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 181.131151][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 181.140168][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 181.149542][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 181.158740][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5917] set_robust_list(0x555556375660, 24) = 0 [pid 5917] chdir("./442") = 0 [pid 5917] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5917] setpgid(0, 0) = 0 [pid 5917] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5917] write(3, "1000", 4) = 4 [pid 5917] close(3) = 0 [pid 5917] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5917] memfd_create("syzkaller", 0) = 3 [pid 5917] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5917] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5917] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5917] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5917] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5917] close(3) = 0 [pid 5917] mkdir("./file0", 0777) = 0 [pid 5917] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5917] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5917] chdir("./file0") = 0 [pid 5917] ioctl(4, LOOP_CLR_FD) = 0 [pid 5917] close(4) = 0 [ 181.251499][ T5917] loop0: detected capacity change from 0 to 2048 [ 181.267844][ T5918] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 181.285897][ T5917] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 181.296586][ T5917] Remounting filesystem read-only [pid 5917] creat("./file2", 040) = 4 [pid 5917] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5917] exit_group(0) = ? [pid 5917] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5917, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./442", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./442", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./442/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./442/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./442/binderfs") = 0 [ 181.302434][ T5917] NILFS (loop0): error -5 truncating bmap (ino=16) [ 181.320535][ T5917] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 181.331816][ T5917] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 181.341327][ T5917] NILFS (loop0): error -5 truncating bmap (ino=16) [ 181.356600][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 181.363697][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 181.371094][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 181.380180][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 181.389645][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./442/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./442/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./442/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./442/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./442/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./442/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./442") = 0 mkdir("./443", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 181.399254][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5919 ./strace-static-x86_64: Process 5919 attached [pid 5919] set_robust_list(0x555556375660, 24) = 0 [pid 5919] chdir("./443") = 0 [pid 5919] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5919] setpgid(0, 0) = 0 [pid 5919] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5919] write(3, "1000", 4) = 4 [pid 5919] close(3) = 0 [pid 5919] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5919] memfd_create("syzkaller", 0) = 3 [pid 5919] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5919] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5919] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5919] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5919] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5919] close(3) = 0 [pid 5919] mkdir("./file0", 0777) = 0 [pid 5919] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5919] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5919] chdir("./file0") = 0 [pid 5919] ioctl(4, LOOP_CLR_FD) = 0 [pid 5919] close(4) = 0 [ 181.485422][ T5919] loop0: detected capacity change from 0 to 2048 [ 181.502046][ T5920] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 181.511859][ T5919] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 181.527796][ T5919] Remounting filesystem read-only [pid 5919] creat("./file2", 040) = 4 [pid 5919] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5919] exit_group(0) = ? [pid 5919] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5919, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./443", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./443", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./443/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./443/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./443/binderfs") = 0 [ 181.533610][ T5919] NILFS (loop0): error -5 truncating bmap (ino=16) [ 181.542732][ T5919] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 181.552707][ T5919] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 181.562541][ T5919] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./443/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./443/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./443/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./443/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./443/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./443/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./443") = 0 mkdir("./444", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5921 ./strace-static-x86_64: Process 5921 attached [pid 5921] set_robust_list(0x555556375660, 24) = 0 [pid 5921] chdir("./444") = 0 [pid 5921] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5921] setpgid(0, 0) = 0 [pid 5921] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [ 181.579650][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 181.588017][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 181.596002][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 181.605633][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 181.614971][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 181.624590][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5921] write(3, "1000", 4) = 4 [pid 5921] close(3) = 0 [pid 5921] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5921] memfd_create("syzkaller", 0) = 3 [pid 5921] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5921] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5921] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5921] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5921] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5921] close(3) = 0 [pid 5921] mkdir("./file0", 0777) = 0 [pid 5921] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5921] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5921] chdir("./file0") = 0 [pid 5921] ioctl(4, LOOP_CLR_FD) = 0 [pid 5921] close(4) = 0 [ 181.709894][ T5921] loop0: detected capacity change from 0 to 2048 [ 181.729255][ T5922] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 181.745339][ T5921] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5921] creat("./file2", 040) = 4 [pid 5921] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5921] exit_group(0) = ? [pid 5921] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5921, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./444", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./444", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./444/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./444/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./444/binderfs") = 0 [ 181.758417][ T5921] Remounting filesystem read-only [ 181.764727][ T5921] NILFS (loop0): error -5 truncating bmap (ino=16) [ 181.774128][ T5921] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 181.784284][ T5921] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 181.794338][ T5921] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./444/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./444/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./444/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./444/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./444/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./444/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./444") = 0 mkdir("./445", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 181.813016][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 181.820031][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 181.827467][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 181.836426][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 181.845342][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 181.854455][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5923 ./strace-static-x86_64: Process 5923 attached [pid 5923] set_robust_list(0x555556375660, 24) = 0 [pid 5923] chdir("./445") = 0 [pid 5923] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5923] setpgid(0, 0) = 0 [pid 5923] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5923] write(3, "1000", 4) = 4 [pid 5923] close(3) = 0 [pid 5923] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5923] memfd_create("syzkaller", 0) = 3 [pid 5923] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5923] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5923] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5923] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5923] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5923] close(3) = 0 [pid 5923] mkdir("./file0", 0777) = 0 [pid 5923] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5923] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5923] chdir("./file0") = 0 [pid 5923] ioctl(4, LOOP_CLR_FD) = 0 [pid 5923] close(4) = 0 [ 181.932585][ T5923] loop0: detected capacity change from 0 to 2048 [ 181.948830][ T5924] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 181.965287][ T5923] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 181.975811][ T5923] Remounting filesystem read-only [pid 5923] creat("./file2", 040) = 4 [pid 5923] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5923] exit_group(0) = ? [pid 5923] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5923, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./445", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./445", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./445/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./445/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./445/binderfs") = 0 [ 181.981606][ T5923] NILFS (loop0): error -5 truncating bmap (ino=16) [ 181.990628][ T5923] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 182.000686][ T5923] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 182.010411][ T5923] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./445/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./445/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./445/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./445/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./445/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./445/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./445") = 0 mkdir("./446", 0777) = 0 [ 182.028372][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 182.035457][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 182.042828][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 182.051895][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 182.060792][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 182.069984][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5925 ./strace-static-x86_64: Process 5925 attached [pid 5925] set_robust_list(0x555556375660, 24) = 0 [pid 5925] chdir("./446") = 0 [pid 5925] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5925] setpgid(0, 0) = 0 [pid 5925] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5925] write(3, "1000", 4) = 4 [pid 5925] close(3) = 0 [pid 5925] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5925] memfd_create("syzkaller", 0) = 3 [pid 5925] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5925] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5925] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5925] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5925] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5925] close(3) = 0 [pid 5925] mkdir("./file0", 0777) = 0 [pid 5925] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5925] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5925] chdir("./file0") = 0 [pid 5925] ioctl(4, LOOP_CLR_FD) = 0 [pid 5925] close(4) = 0 [ 182.145086][ T5925] loop0: detected capacity change from 0 to 2048 [ 182.160807][ T5926] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 182.176322][ T5925] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 182.187136][ T5925] Remounting filesystem read-only [pid 5925] creat("./file2", 040) = 4 [pid 5925] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5925] exit_group(0) = ? [pid 5925] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5925, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./446", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./446", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./446/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./446/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./446/binderfs") = 0 [ 182.193423][ T5925] NILFS (loop0): error -5 truncating bmap (ino=16) [ 182.201194][ T5925] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 182.211263][ T5925] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 182.221113][ T5925] NILFS (loop0): error -5 truncating bmap (ino=16) [ 182.238162][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./446/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./446/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./446/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./446/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./446/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./446/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./446") = 0 mkdir("./447", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5927 ./strace-static-x86_64: Process 5927 attached [pid 5927] set_robust_list(0x555556375660, 24) = 0 [pid 5927] chdir("./447") = 0 [pid 5927] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5927] setpgid(0, 0) = 0 [pid 5927] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5927] write(3, "1000", 4) = 4 [pid 5927] close(3) = 0 [pid 5927] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5927] memfd_create("syzkaller", 0) = 3 [pid 5927] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 182.245364][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 182.253142][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 182.262372][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 182.271270][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 182.280661][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5927] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5927] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5927] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5927] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5927] close(3) = 0 [pid 5927] mkdir("./file0", 0777) = 0 [pid 5927] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5927] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5927] chdir("./file0") = 0 [pid 5927] ioctl(4, LOOP_CLR_FD) = 0 [pid 5927] close(4) = 0 [ 182.342215][ T5927] loop0: detected capacity change from 0 to 2048 [ 182.358549][ T5928] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 182.383456][ T5927] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5927] creat("./file2", 040) = 4 [pid 5927] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5927] exit_group(0) = ? [pid 5927] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5927, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./447", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./447", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./447/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./447/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./447/binderfs") = 0 [ 182.393709][ T5927] Remounting filesystem read-only [ 182.398792][ T5927] NILFS (loop0): error -5 truncating bmap (ino=16) [ 182.408830][ T5927] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 182.419673][ T5927] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 182.428949][ T5927] NILFS (loop0): error -5 truncating bmap (ino=16) [ 182.445767][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 182.452994][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 182.460325][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 182.469592][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 182.478673][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./447/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./447/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./447/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./447/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./447/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./447/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./447") = 0 mkdir("./448", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5929 ./strace-static-x86_64: Process 5929 attached [pid 5929] set_robust_list(0x555556375660, 24) = 0 [pid 5929] chdir("./448") = 0 [pid 5929] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5929] setpgid(0, 0) = 0 [pid 5929] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5929] write(3, "1000", 4) = 4 [pid 5929] close(3) = 0 [ 182.487838][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5929] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5929] memfd_create("syzkaller", 0) = 3 [pid 5929] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5929] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5929] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5929] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5929] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5929] close(3) = 0 [pid 5929] mkdir("./file0", 0777) = 0 [pid 5929] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5929] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5929] chdir("./file0") = 0 [pid 5929] ioctl(4, LOOP_CLR_FD) = 0 [pid 5929] close(4) = 0 [ 182.563219][ T5929] loop0: detected capacity change from 0 to 2048 [ 182.578707][ T5930] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 182.603848][ T5929] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5929] creat("./file2", 040) = 4 [pid 5929] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5929] exit_group(0) = ? [pid 5929] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5929, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./448", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./448", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./448/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./448/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./448/binderfs") = 0 [ 182.614133][ T5929] Remounting filesystem read-only [ 182.620385][ T5929] NILFS (loop0): error -5 truncating bmap (ino=16) [ 182.628999][ T5929] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 182.638951][ T5929] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 182.648480][ T5929] NILFS (loop0): error -5 truncating bmap (ino=16) [ 182.666264][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 182.673305][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 182.682879][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 182.692792][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 182.702255][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./448/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./448/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./448/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./448/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./448/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./448/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./448") = 0 mkdir("./449", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 182.711813][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5931 attached , child_tidptr=0x555556375650) = 5931 [pid 5931] set_robust_list(0x555556375660, 24) = 0 [pid 5931] chdir("./449") = 0 [pid 5931] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5931] setpgid(0, 0) = 0 [pid 5931] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5931] write(3, "1000", 4) = 4 [pid 5931] close(3) = 0 [pid 5931] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5931] memfd_create("syzkaller", 0) = 3 [pid 5931] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5931] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5931] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5931] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5931] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5931] close(3) = 0 [pid 5931] mkdir("./file0", 0777) = 0 [pid 5931] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5931] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5931] chdir("./file0") = 0 [pid 5931] ioctl(4, LOOP_CLR_FD) = 0 [pid 5931] close(4) = 0 [ 182.800662][ T5931] loop0: detected capacity change from 0 to 2048 [ 182.815958][ T5932] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 182.834102][ T5931] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 182.844585][ T5931] Remounting filesystem read-only [pid 5931] creat("./file2", 040) = 4 [pid 5931] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5931] exit_group(0) = ? [pid 5931] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5931, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./449", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./449", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./449/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./449/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./449/binderfs") = 0 [ 182.850555][ T5931] NILFS (loop0): error -5 truncating bmap (ino=16) [ 182.860012][ T5931] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 182.870721][ T5931] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 182.880813][ T5931] NILFS (loop0): error -5 truncating bmap (ino=16) [ 182.899071][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 182.906212][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 182.914435][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 182.926326][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 182.935437][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 umount2("./449/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./449/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./449/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./449/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./449/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./449/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./449") = 0 mkdir("./450", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5933 ./strace-static-x86_64: Process 5933 attached [pid 5933] set_robust_list(0x555556375660, 24) = 0 [pid 5933] chdir("./450") = 0 [pid 5933] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5933] setpgid(0, 0) = 0 [pid 5933] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5933] write(3, "1000", 4) = 4 [pid 5933] close(3) = 0 [pid 5933] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5933] memfd_create("syzkaller", 0) = 3 [pid 5933] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 182.945047][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5933] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5933] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5933] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5933] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5933] close(3) = 0 [pid 5933] mkdir("./file0", 0777) = 0 [pid 5933] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5933] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5933] chdir("./file0") = 0 [pid 5933] ioctl(4, LOOP_CLR_FD) = 0 [pid 5933] close(4) = 0 [ 183.002194][ T5933] loop0: detected capacity change from 0 to 2048 [ 183.019766][ T5934] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 183.035727][ T5933] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 183.046042][ T5933] Remounting filesystem read-only [pid 5933] creat("./file2", 040) = 4 [pid 5933] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5933] exit_group(0) = ? [pid 5933] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5933, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./450", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./450", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./450/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./450/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./450/binderfs") = 0 [ 183.051278][ T5933] NILFS (loop0): error -5 truncating bmap (ino=16) [ 183.059806][ T5933] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 183.069864][ T5933] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 183.079493][ T5933] NILFS (loop0): error -5 truncating bmap (ino=16) [ 183.095582][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./450/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./450/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./450/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./450/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./450/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./450/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./450") = 0 mkdir("./451", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5935 ./strace-static-x86_64: Process 5935 attached [pid 5935] set_robust_list(0x555556375660, 24) = 0 [pid 5935] chdir("./451") = 0 [pid 5935] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5935] setpgid(0, 0) = 0 [pid 5935] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5935] write(3, "1000", 4) = 4 [ 183.103070][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 183.110379][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 183.119530][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 183.129357][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 183.138715][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5935] close(3) = 0 [pid 5935] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5935] memfd_create("syzkaller", 0) = 3 [pid 5935] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5935] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5935] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5935] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5935] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5935] close(3) = 0 [pid 5935] mkdir("./file0", 0777) = 0 [pid 5935] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5935] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5935] chdir("./file0") = 0 [pid 5935] ioctl(4, LOOP_CLR_FD) = 0 [pid 5935] close(4) = 0 [ 183.216007][ T5935] loop0: detected capacity change from 0 to 2048 [ 183.232638][ T5936] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 183.246657][ T5935] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 183.257159][ T5935] Remounting filesystem read-only [pid 5935] creat("./file2", 040) = 4 [pid 5935] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5935] exit_group(0) = ? [pid 5935] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5935, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./451", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./451", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./451/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./451/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./451/binderfs") = 0 [ 183.263087][ T5935] NILFS (loop0): error -5 truncating bmap (ino=16) [ 183.272134][ T5935] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 183.282190][ T5935] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 183.291369][ T5935] NILFS (loop0): error -5 truncating bmap (ino=16) [ 183.308260][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./451/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./451/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./451/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./451/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./451/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./451/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./451") = 0 mkdir("./452", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 183.315687][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 183.323231][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 183.332155][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 183.341041][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 183.350663][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5937 ./strace-static-x86_64: Process 5937 attached [pid 5937] set_robust_list(0x555556375660, 24) = 0 [pid 5937] chdir("./452") = 0 [pid 5937] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5937] setpgid(0, 0) = 0 [pid 5937] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5937] write(3, "1000", 4) = 4 [pid 5937] close(3) = 0 [pid 5937] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5937] memfd_create("syzkaller", 0) = 3 [pid 5937] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5937] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5937] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5937] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5937] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5937] close(3) = 0 [pid 5937] mkdir("./file0", 0777) = 0 [pid 5937] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5937] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5937] chdir("./file0") = 0 [pid 5937] ioctl(4, LOOP_CLR_FD) = 0 [pid 5937] close(4) = 0 [ 183.440521][ T5937] loop0: detected capacity change from 0 to 2048 [ 183.457140][ T5938] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 183.470609][ T5937] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 183.480991][ T5937] Remounting filesystem read-only [pid 5937] creat("./file2", 040) = 4 [pid 5937] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5937] exit_group(0) = ? [pid 5937] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5937, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./452", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./452", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./452/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./452/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./452/binderfs") = 0 [ 183.486377][ T5937] NILFS (loop0): error -5 truncating bmap (ino=16) [ 183.496057][ T5937] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 183.506193][ T5937] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 183.515805][ T5937] NILFS (loop0): error -5 truncating bmap (ino=16) [ 183.533032][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./452/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./452/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./452/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./452/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./452/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./452/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./452") = 0 mkdir("./453", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5939 [ 183.540036][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 183.547520][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 183.556631][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 183.565575][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 183.574732][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer ./strace-static-x86_64: Process 5939 attached [pid 5939] set_robust_list(0x555556375660, 24) = 0 [pid 5939] chdir("./453") = 0 [pid 5939] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5939] setpgid(0, 0) = 0 [pid 5939] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5939] write(3, "1000", 4) = 4 [pid 5939] close(3) = 0 [pid 5939] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5939] memfd_create("syzkaller", 0) = 3 [pid 5939] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5939] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5939] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5939] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5939] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5939] close(3) = 0 [pid 5939] mkdir("./file0", 0777) = 0 [pid 5939] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5939] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5939] chdir("./file0") = 0 [pid 5939] ioctl(4, LOOP_CLR_FD) = 0 [pid 5939] close(4) = 0 [ 183.660832][ T5939] loop0: detected capacity change from 0 to 2048 [ 183.677135][ T5940] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 183.693900][ T5939] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 183.704548][ T5939] Remounting filesystem read-only [pid 5939] creat("./file2", 040) = 4 [pid 5939] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5939] exit_group(0) = ? [pid 5939] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5939, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./453", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./453", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./453/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./453/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./453/binderfs") = 0 [ 183.709920][ T5939] NILFS (loop0): error -5 truncating bmap (ino=16) [ 183.718402][ T5939] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 183.729071][ T5939] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 183.738646][ T5939] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./453/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./453/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./453/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./453/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./453/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./453/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./453") = 0 mkdir("./454", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 [ 183.755697][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 183.763026][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 183.770328][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 183.779323][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 183.788361][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 183.797576][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5941 ./strace-static-x86_64: Process 5941 attached [pid 5941] set_robust_list(0x555556375660, 24) = 0 [pid 5941] chdir("./454") = 0 [pid 5941] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5941] setpgid(0, 0) = 0 [pid 5941] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5941] write(3, "1000", 4) = 4 [pid 5941] close(3) = 0 [pid 5941] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5941] memfd_create("syzkaller", 0) = 3 [pid 5941] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5941] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5941] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5941] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5941] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5941] close(3) = 0 [pid 5941] mkdir("./file0", 0777) = 0 [pid 5941] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5941] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5941] chdir("./file0") = 0 [pid 5941] ioctl(4, LOOP_CLR_FD) = 0 [pid 5941] close(4) = 0 [ 183.876590][ T5941] loop0: detected capacity change from 0 to 2048 [ 183.892816][ T5942] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 183.907783][ T5941] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 183.918757][ T5941] Remounting filesystem read-only [pid 5941] creat("./file2", 040) = 4 [pid 5941] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5941] exit_group(0) = ? [pid 5941] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5941, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=8 /* 0.08 s */} --- umount2("./454", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./454", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./454/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./454/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./454/binderfs") = 0 [ 183.925013][ T5941] NILFS (loop0): error -5 truncating bmap (ino=16) [ 183.933206][ T5941] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 183.943160][ T5941] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 183.952800][ T5941] NILFS (loop0): error -5 truncating bmap (ino=16) [ 183.969018][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./454/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./454/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./454/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./454/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./454/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./454/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./454") = 0 mkdir("./455", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5943 ./strace-static-x86_64: Process 5943 attached [pid 5943] set_robust_list(0x555556375660, 24) = 0 [pid 5943] chdir("./455") = 0 [pid 5943] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5943] setpgid(0, 0) = 0 [pid 5943] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5943] write(3, "1000", 4) = 4 [pid 5943] close(3) = 0 [pid 5943] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5943] memfd_create("syzkaller", 0) = 3 [pid 5943] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 183.976225][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 183.984367][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 183.993313][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 184.003349][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 184.012493][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5943] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5943] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5943] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5943] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5943] close(3) = 0 [pid 5943] mkdir("./file0", 0777) = 0 [pid 5943] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5943] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5943] chdir("./file0") = 0 [pid 5943] ioctl(4, LOOP_CLR_FD) = 0 [pid 5943] close(4) = 0 [pid 5943] creat("./file2", 040) = 4 [ 184.077463][ T5943] loop0: detected capacity change from 0 to 2048 [ 184.092149][ T5944] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 184.099146][ T5943] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 184.113568][ T5943] Remounting filesystem read-only [ 184.119372][ T5943] NILFS (loop0): error -5 truncating bmap (ino=16) [pid 5943] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5943] exit_group(0) = ? [pid 5943] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5943, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./455", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./455", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./455/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./455/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./455/binderfs") = 0 [ 184.136163][ T5943] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 184.146073][ T5943] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 184.157658][ T5943] NILFS (loop0): error -5 truncating bmap (ino=16) [ 184.175031][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./455/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./455/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./455/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./455/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./455/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./455/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./455") = 0 mkdir("./456", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5945 ./strace-static-x86_64: Process 5945 attached [pid 5945] set_robust_list(0x555556375660, 24) = 0 [pid 5945] chdir("./456") = 0 [pid 5945] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5945] setpgid(0, 0) = 0 [pid 5945] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5945] write(3, "1000", 4) = 4 [pid 5945] close(3) = 0 [pid 5945] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5945] memfd_create("syzkaller", 0) = 3 [pid 5945] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 184.182333][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 184.189638][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 184.199392][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 184.208695][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 184.218798][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5945] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5945] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5945] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5945] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5945] close(3) = 0 [pid 5945] mkdir("./file0", 0777) = 0 [pid 5945] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5945] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5945] chdir("./file0") = 0 [pid 5945] ioctl(4, LOOP_CLR_FD) = 0 [pid 5945] close(4) = 0 [pid 5945] creat("./file2", 040) = 4 [ 184.295827][ T5945] loop0: detected capacity change from 0 to 2048 [ 184.312507][ T5946] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 184.316917][ T5945] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 184.333870][ T5945] Remounting filesystem read-only [ 184.338957][ T5945] NILFS (loop0): error -5 truncating bmap (ino=16) [pid 5945] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5945] exit_group(0) = ? [pid 5945] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5945, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./456", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./456", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./456/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./456/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./456/binderfs") = 0 [ 184.346923][ T5945] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 184.357443][ T5945] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 184.366951][ T5945] NILFS (loop0): error -5 truncating bmap (ino=16) [ 184.383887][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./456/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./456/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./456/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./456/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./456/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./456/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./456") = 0 mkdir("./457", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5947 ./strace-static-x86_64: Process 5947 attached [pid 5947] set_robust_list(0x555556375660, 24) = 0 [pid 5947] chdir("./457") = 0 [pid 5947] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5947] setpgid(0, 0) = 0 [pid 5947] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5947] write(3, "1000", 4) = 4 [pid 5947] close(3) = 0 [pid 5947] symlink("/dev/binderfs", "./binderfs") = 0 [ 184.390923][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 184.398464][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 184.407425][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 184.416456][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 184.425595][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5947] memfd_create("syzkaller", 0) = 3 [pid 5947] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5947] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5947] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5947] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5947] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5947] close(3) = 0 [pid 5947] mkdir("./file0", 0777) = 0 [pid 5947] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5947] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5947] chdir("./file0") = 0 [pid 5947] ioctl(4, LOOP_CLR_FD) = 0 [pid 5947] close(4) = 0 [ 184.507261][ T5947] loop0: detected capacity change from 0 to 2048 [ 184.523931][ T5948] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 184.533888][ T5947] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 184.545175][ T5947] Remounting filesystem read-only [pid 5947] creat("./file2", 040) = 4 [pid 5947] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5947] exit_group(0) = ? [pid 5947] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5947, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./457", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./457", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./457/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./457/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./457/binderfs") = 0 [ 184.554886][ T5947] NILFS (loop0): error -5 truncating bmap (ino=16) [ 184.563240][ T5947] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 184.573226][ T5947] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 184.582703][ T5947] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./457/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./457/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./457/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./457/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./457/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./457/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./457") = 0 mkdir("./458", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5949 ./strace-static-x86_64: Process 5949 attached [pid 5949] set_robust_list(0x555556375660, 24) = 0 [pid 5949] chdir("./458") = 0 [pid 5949] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5949] setpgid(0, 0) = 0 [ 184.600630][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 184.609986][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 184.619021][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 184.628140][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 184.637130][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 184.646419][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5949] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5949] write(3, "1000", 4) = 4 [pid 5949] close(3) = 0 [pid 5949] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5949] memfd_create("syzkaller", 0) = 3 [pid 5949] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5949] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5949] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5949] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5949] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5949] close(3) = 0 [pid 5949] mkdir("./file0", 0777) = 0 [pid 5949] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5949] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5949] chdir("./file0") = 0 [pid 5949] ioctl(4, LOOP_CLR_FD) = 0 [pid 5949] close(4) = 0 [ 184.712265][ T5949] loop0: detected capacity change from 0 to 2048 [ 184.728916][ T5950] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 184.743163][ T5949] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 184.754301][ T5949] Remounting filesystem read-only [pid 5949] creat("./file2", 040) = 4 [pid 5949] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5949] exit_group(0) = ? [pid 5949] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5949, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./458", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./458", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./458/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./458/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./458/binderfs") = 0 [ 184.759464][ T5949] NILFS (loop0): error -5 truncating bmap (ino=16) [ 184.767931][ T5949] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 184.778288][ T5949] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 184.788047][ T5949] NILFS (loop0): error -5 truncating bmap (ino=16) [ 184.805513][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./458/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./458/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./458/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./458/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./458/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 [ 184.812994][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 184.820329][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 184.829264][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 184.838205][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 184.847596][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer rmdir("./458/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./458") = 0 mkdir("./459", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5951 ./strace-static-x86_64: Process 5951 attached [pid 5951] set_robust_list(0x555556375660, 24) = 0 [pid 5951] chdir("./459") = 0 [pid 5951] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5951] setpgid(0, 0) = 0 [pid 5951] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5951] write(3, "1000", 4) = 4 [pid 5951] close(3) = 0 [pid 5951] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5951] memfd_create("syzkaller", 0) = 3 [pid 5951] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5951] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5951] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5951] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5951] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5951] close(3) = 0 [pid 5951] mkdir("./file0", 0777) = 0 [pid 5951] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5951] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5951] chdir("./file0") = 0 [pid 5951] ioctl(4, LOOP_CLR_FD) = 0 [pid 5951] close(4) = 0 [ 184.981328][ T5951] loop0: detected capacity change from 0 to 2048 [ 184.998035][ T5952] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 185.015726][ T5951] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5951] creat("./file2", 040) = 4 [pid 5951] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5951] exit_group(0) = ? [pid 5951] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5951, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./459", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./459", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./459/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./459/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./459/binderfs") = 0 [ 185.026419][ T5951] Remounting filesystem read-only [ 185.033336][ T5951] NILFS (loop0): error -5 truncating bmap (ino=16) [ 185.041124][ T5951] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 185.051987][ T5951] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 185.061255][ T5951] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./459/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./459/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./459/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./459/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./459/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./459/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./459") = 0 mkdir("./460", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5953 ./strace-static-x86_64: Process 5953 attached [pid 5953] set_robust_list(0x555556375660, 24) = 0 [pid 5953] chdir("./460") = 0 [pid 5953] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5953] setpgid(0, 0) = 0 [pid 5953] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5953] write(3, "1000", 4) = 4 [pid 5953] close(3) = 0 [pid 5953] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5953] memfd_create("syzkaller", 0) = 3 [pid 5953] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 185.076724][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 185.083766][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 185.091820][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 185.100903][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 185.112471][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 185.121978][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5953] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5953] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5953] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5953] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5953] close(3) = 0 [pid 5953] mkdir("./file0", 0777) = 0 [pid 5953] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5953] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5953] chdir("./file0") = 0 [pid 5953] ioctl(4, LOOP_CLR_FD) = 0 [pid 5953] close(4) = 0 [pid 5953] creat("./file2", 040) = 4 [ 185.190195][ T5953] loop0: detected capacity change from 0 to 2048 [ 185.205672][ T5954] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 185.215748][ T5953] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 185.226896][ T5953] Remounting filesystem read-only [ 185.232215][ T5953] NILFS (loop0): error -5 truncating bmap (ino=16) [pid 5953] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5953] exit_group(0) = ? [pid 5953] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5953, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./460", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./460", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./460/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./460/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./460/binderfs") = 0 [ 185.244093][ T5953] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 185.254491][ T5953] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 185.264682][ T5953] NILFS (loop0): error -5 truncating bmap (ino=16) [ 185.280018][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 umount2("./460/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./460/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./460/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./460/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./460/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./460/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./460") = 0 mkdir("./461", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5955 ./strace-static-x86_64: Process 5955 attached [pid 5955] set_robust_list(0x555556375660, 24) = 0 [pid 5955] chdir("./461") = 0 [pid 5955] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5955] setpgid(0, 0) = 0 [pid 5955] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5955] write(3, "1000", 4) = 4 [pid 5955] close(3) = 0 [pid 5955] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5955] memfd_create("syzkaller", 0) = 3 [pid 5955] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [ 185.287579][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 185.295341][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 185.304841][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 185.314182][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 185.324118][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5955] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5955] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5955] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5955] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5955] close(3) = 0 [pid 5955] mkdir("./file0", 0777) = 0 [pid 5955] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5955] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5955] chdir("./file0") = 0 [pid 5955] ioctl(4, LOOP_CLR_FD) = 0 [pid 5955] close(4) = 0 [ 185.384282][ T5955] loop0: detected capacity change from 0 to 2048 [ 185.401666][ T5956] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 185.417318][ T5955] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 185.428512][ T5955] Remounting filesystem read-only [pid 5955] creat("./file2", 040) = 4 [pid 5955] write(4, "\x66\x75\x6c\x6c\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x32\x39\x34\x39\x36\x37\x32\x39\x35\x00", 47) = -1 EIO (Input/output error) [pid 5955] exit_group(0) = ? [pid 5955] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5955, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./461", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./461", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555563766f0 /* 4 entries */, 32768) = 112 umount2("./461/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./461/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./461/binderfs") = 0 [ 185.434304][ T5955] NILFS (loop0): error -5 truncating bmap (ino=16) [ 185.442201][ T5955] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 185.452244][ T5955] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 185.461764][ T5955] NILFS (loop0): error -5 truncating bmap (ino=16) umount2("./461/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./461/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./461/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./461/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./461/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555637e730 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555637e730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./461/file0") = 0 getdents64(3, 0x5555563766f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./461") = 0 mkdir("./462", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556375650) = 5957 ./strace-static-x86_64: Process 5957 attached [pid 5957] set_robust_list(0x555556375660, 24) = 0 [pid 5957] chdir("./462") = 0 [ 185.476873][ T5024] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 185.487093][ T5024] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 185.494518][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 185.503653][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 185.513040][ T5024] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 185.522209][ T5024] NILFS (loop0): disposed unprocessed dirty file(s) when detaching log writer [pid 5957] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5957] setpgid(0, 0) = 0 [pid 5957] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5957] write(3, "1000", 4) = 4 [pid 5957] close(3) = 0 [pid 5957] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5957] memfd_create("syzkaller", 0) = 3 [pid 5957] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f093b4c4000 [pid 5957] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5957] munmap(0x7f093b4c4000, 1048576) = 0 [pid 5957] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5957] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5957] close(3) = 0 [pid 5957] mkdir("./file0", 0777) = 0 [pid 5957] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_NODIRATIME, "") = 0 [pid 5957] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5957] chdir("./file0") = 0 [pid 5957] ioctl(4, LOOP_CLR_FD) = 0 [pid 5957] close(4) = 0 [ 185.587920][ T5957] loop0: detected capacity change from 0 to 2048 [ 185.604980][ T5958] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 185.624353][ T5957] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [pid 5957] creat("./file2", 040) = 4 [ 185.634370][ T5957] Remounting filesystem read-only [ 185.641929][ T5957] NILFS (loop0): error -5 truncating bmap (ino=16) [ 185.650852][ T5957] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 185.661599][ T9] NILFS (loop0): discard dirty page: offset=4096, ino=6 [ 185.662219][ T5957] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 185.668660][ T9] NILFS (loop0): discard dirty block: blocknr=39, size=1024 [ 185.680748][ T5957] NILFS (loop0): error -5 truncating bmap (ino=16) [ 185.689046][ T9] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 185.696536][ T5957] ------------[ cut here ]------------ [ 185.706263][ T9] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 185.711485][ T5957] WARNING: CPU: 0 PID: 5957 at fs/buffer.c:1193 mark_buffer_dirty+0x376/0x3e0 [ 185.721893][ T9] NILFS (loop0): discard dirty block: blocknr=18446744073709551615, size=1024 [ 185.730676][ T5957] Modules linked in: [ 185.743743][ T5957] CPU: 0 PID: 5957 Comm: syz-executor176 Not tainted 6.5.0-rc4-syzkaller-00251-gf0ab9f34e59e #0 [ 185.754320][ T5957] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 [ 185.764927][ T5957] RIP: 0010:mark_buffer_dirty+0x376/0x3e0 [ 185.770807][ T5957] Code: e9 df e8 8c ff e8 da e8 8c ff 48 89 ef e8 c2 e9 e7 ff 5b 5d e9 cb e8 8c ff e8 c6 e8 8c ff 0f 0b e9 10 fe ff ff e8 ba e8 8c ff <0f> 0b e9 b7 fc ff ff e8 ae e8 8c ff 0f 0b e9 d6 fc ff ff 48 89 df [ 185.794966][ T5957] RSP: 0018:ffffc900052c7a10 EFLAGS: 00010293 [ 185.801462][ T5957] RAX: 0000000000000000 RBX: ffff88806eb7f128 RCX: 0000000000000000 [ 185.810371][ T5957] RDX: ffff88802ade8200 RSI: ffffffff81f83786 RDI: 0000000000000001 [ 185.819458][ T5957] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 [ 185.827927][ T5957] R10: 0000000000000000 R11: 205d373539355420 R12: 1ffff92000a58f46 [ 185.836671][ T5957] R13: 0000000000000007 R14: dffffc0000000000 R15: 0000000000000000 [ 185.845688][ T5957] FS: 0000555556375380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 185.855083][ T5957] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 185.862290][ T5957] CR2: 00007f094397b0f8 CR3: 00000000183f7000 CR4: 00000000003506f0 [ 185.870545][ T5957] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 185.881961][ T5957] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 185.890260][ T5957] Call Trace: [ 185.893674][ T5957] [ 185.896743][ T5957] ? __warn+0xe6/0x380 [ 185.901020][ T5957] ? mark_buffer_dirty+0x376/0x3e0 [ 185.906491][ T5957] ? report_bug+0x3bc/0x580 [ 185.911471][ T5957] ? handle_bug+0x3c/0x70 [ 185.917359][ T5957] ? exc_invalid_op+0x17/0x40 [ 185.922478][ T5957] ? asm_exc_invalid_op+0x1a/0x20 [ 185.927747][ T5957] ? mark_buffer_dirty+0x376/0x3e0 [ 185.933357][ T5957] ? mark_buffer_dirty+0x376/0x3e0 [ 185.938917][ T5957] __nilfs_mark_inode_dirty+0xb2/0x240 [ 185.944618][ T5957] ? nilfs_dirty_folio+0x4c0/0x4c0 [ 185.949893][ T5957] ? block_truncate_page+0x534/0x770 [ 185.955344][ T5957] ? __nilfs_mark_inode_dirty+0x240/0x240 [ 185.961310][ T5957] nilfs_truncate+0x3e3/0x500 [ 185.966124][ T5957] ? nilfs_get_block+0xaa0/0xaa0 [ 185.971135][ T5957] nilfs_write_begin+0x15c/0x1a0 [ 185.976235][ T5957] generic_perform_write+0x278/0x600 [ 185.981685][ T5957] ? folio_add_wait_queue+0x1c0/0x1c0 [ 185.988272][ T5957] ? new_inode+0x270/0x270 [ 185.993151][ T5957] ? generic_write_checks_count+0x2d0/0x2d0 [ 185.999834][ T5957] __generic_file_write_iter+0x1f9/0x240 [ 186.006042][ T5957] generic_file_write_iter+0xe3/0x350 [ 186.011584][ T5957] vfs_write+0x650/0xe40 [ 186.015881][ T5957] ? kernel_write+0x6c0/0x6c0 [ 186.021507][ T5957] ? find_held_lock+0x2d/0x110 [ 186.026332][ T5957] ? reacquire_held_locks+0x4b0/0x4b0 [ 186.031861][ T5957] ? __fget_light+0x1fc/0x260 [ 186.036613][ T5957] ksys_write+0x12f/0x250 [ 186.041280][ T5957] ? __ia32_sys_read+0xb0/0xb0 [ 186.046191][ T5957] ? lockdep_hardirqs_on+0x7d/0x100 [ 186.051560][ T5957] ? _raw_spin_unlock_irq+0x2e/0x50 [ 186.056844][ T5957] ? ptrace_notify+0xf4/0x130 [ 186.061790][ T5957] do_syscall_64+0x38/0xb0 [ 186.066288][ T5957] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 186.072449][ T5957] RIP: 0033:0x7f0943903169 [ 186.079436][ T5957] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 21 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 186.099808][ T5957] RSP: 002b:00007ffd017c6e58 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 186.108500][ T5957] RAX: ffffffffffffffda RBX: 00007f094394c08d RCX: 00007f0943903169 [ 186.117504][ T5957] RDX: 000000000000002f RSI: 0000000020000040 RDI: 0000000000000004 [ 186.125891][ T5957] RBP: 0000000000000004 R08: 00007ffd017c6bee R09: 0000000000000808 [ 186.134089][ T5957] R10: 0000000000000014 R11: 0000000000000246 R12: 00007ffd017c6ea0 [ 186.143014][ T5957] R13: 00007ffd017c6ee0 R14: 0000000000100000 R15: 0000000000000003 [ 186.151891][ T5957] [ 186.155072][ T5957] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 186.162403][ T5957] CPU: 0 PID: 5957 Comm: syz-executor176 Not tainted 6.5.0-rc4-syzkaller-00251-gf0ab9f34e59e #0 [ 186.172944][ T5957] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 [ 186.183062][ T5957] Call Trace: [ 186.186365][ T5957] [ 186.189313][ T5957] dump_stack_lvl+0xd9/0x1b0 [ 186.194253][ T5957] panic+0x6a4/0x750 [ 186.198206][ T5957] ? panic_smp_self_stop+0xa0/0xa0 [ 186.203373][ T5957] ? show_trace_log_lvl+0x29d/0x3c0 [ 186.208603][ T5957] ? mark_buffer_dirty+0x376/0x3e0 [ 186.213756][ T5957] check_panic_on_warn+0xab/0xb0 [ 186.218841][ T5957] __warn+0xf2/0x380 [ 186.222780][ T5957] ? mark_buffer_dirty+0x376/0x3e0 [ 186.227926][ T5957] report_bug+0x3bc/0x580 [ 186.232283][ T5957] handle_bug+0x3c/0x70 [ 186.236464][ T5957] exc_invalid_op+0x17/0x40 [ 186.240992][ T5957] asm_exc_invalid_op+0x1a/0x20 [ 186.245874][ T5957] RIP: 0010:mark_buffer_dirty+0x376/0x3e0 [ 186.251629][ T5957] Code: e9 df e8 8c ff e8 da e8 8c ff 48 89 ef e8 c2 e9 e7 ff 5b 5d e9 cb e8 8c ff e8 c6 e8 8c ff 0f 0b e9 10 fe ff ff e8 ba e8 8c ff <0f> 0b e9 b7 fc ff ff e8 ae e8 8c ff 0f 0b e9 d6 fc ff ff 48 89 df [ 186.271363][ T5957] RSP: 0018:ffffc900052c7a10 EFLAGS: 00010293 [ 186.277470][ T5957] RAX: 0000000000000000 RBX: ffff88806eb7f128 RCX: 0000000000000000 [ 186.285576][ T5957] RDX: ffff88802ade8200 RSI: ffffffff81f83786 RDI: 0000000000000001 [ 186.293572][ T5957] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 [ 186.301576][ T5957] R10: 0000000000000000 R11: 205d373539355420 R12: 1ffff92000a58f46 [ 186.309623][ T5957] R13: 0000000000000007 R14: dffffc0000000000 R15: 0000000000000000 [ 186.317724][ T5957] ? mark_buffer_dirty+0x376/0x3e0 [ 186.322897][ T5957] __nilfs_mark_inode_dirty+0xb2/0x240 [ 186.328500][ T5957] ? nilfs_dirty_folio+0x4c0/0x4c0 [ 186.333663][ T5957] ? block_truncate_page+0x534/0x770 [ 186.338984][ T5957] ? __nilfs_mark_inode_dirty+0x240/0x240 [ 186.344743][ T5957] nilfs_truncate+0x3e3/0x500 [ 186.349455][ T5957] ? nilfs_get_block+0xaa0/0xaa0 [ 186.354444][ T5957] nilfs_write_begin+0x15c/0x1a0 [ 186.359680][ T5957] generic_perform_write+0x278/0x600 [ 186.365010][ T5957] ? folio_add_wait_queue+0x1c0/0x1c0 [ 186.370426][ T5957] ? new_inode+0x270/0x270 [ 186.375053][ T5957] ? generic_write_checks_count+0x2d0/0x2d0 [ 186.381548][ T5957] __generic_file_write_iter+0x1f9/0x240 [ 186.389809][ T5957] generic_file_write_iter+0xe3/0x350 [ 186.395288][ T5957] vfs_write+0x650/0xe40 [ 186.399667][ T5957] ? kernel_write+0x6c0/0x6c0 [ 186.404570][ T5957] ? find_held_lock+0x2d/0x110 [ 186.409564][ T5957] ? reacquire_held_locks+0x4b0/0x4b0 [ 186.414987][ T5957] ? __fget_light+0x1fc/0x260 [ 186.420078][ T5957] ksys_write+0x12f/0x250 [ 186.424744][ T5957] ? __ia32_sys_read+0xb0/0xb0 [ 186.429563][ T5957] ? lockdep_hardirqs_on+0x7d/0x100 [ 186.434811][ T5957] ? _raw_spin_unlock_irq+0x2e/0x50 [ 186.440071][ T5957] ? ptrace_notify+0xf4/0x130 [ 186.444788][ T5957] do_syscall_64+0x38/0xb0 [ 186.449634][ T5957] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 186.455736][ T5957] RIP: 0033:0x7f0943903169 [ 186.460177][ T5957] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 21 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 186.481144][ T5957] RSP: 002b:00007ffd017c6e58 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 186.490210][ T5957] RAX: ffffffffffffffda RBX: 00007f094394c08d RCX: 00007f0943903169 [ 186.498518][ T5957] RDX: 000000000000002f RSI: 0000000020000040 RDI: 0000000000000004 [ 186.507220][ T5957] RBP: 0000000000000004 R08: 00007ffd017c6bee R09: 0000000000000808 [ 186.518002][ T5957] R10: 0000000000000014 R11: 0000000000000246 R12: 00007ffd017c6ea0 [ 186.526539][ T5957] R13: 00007ffd017c6ee0 R14: 0000000000100000 R15: 0000000000000003 [ 186.534736][ T5957] [ 186.538046][ T5957] Kernel Offset: disabled [ 186.542521][ T5957] Rebooting in 86400 seconds..