./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2831802995 <...> Warning: Permanently added '10.128.1.136' (ECDSA) to the list of known hosts. execve("./syz-executor2831802995", ["./syz-executor2831802995"], 0x7fff465cb7c0 /* 10 vars */) = 0 brk(NULL) = 0x555557254000 brk(0x555557254c40) = 0x555557254c40 arch_prctl(ARCH_SET_FS, 0x555557254300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor2831802995", 4096) = 28 brk(0x555557275c40) = 0x555557275c40 brk(0x555557276000) = 0x555557276000 mprotect(0x7f9a92d69000, 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 getpid() = 5070 mkdir("./syzkaller.MScVSy", 0700) = 0 chmod("./syzkaller.MScVSy", 0777) = 0 chdir("./syzkaller.MScVSy") = 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) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555572545d0) = 5071 ./strace-static-x86_64: Process 5071 attached [pid 5071] chdir("./0") = 0 [pid 5071] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5071] setpgid(0, 0) = 0 [pid 5071] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5071] write(3, "1000", 4) = 4 [pid 5071] close(3) = 0 [pid 5071] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5071] memfd_create("syzkaller", 0) = 3 [pid 5071] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5071] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5071] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5071] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5071] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5071] close(3) = 0 [pid 5071] mkdir("./file0", 0777) = 0 syzkaller login: [ 54.194249][ T5071] loop0: detected capacity change from 0 to 512 [ 54.206245][ T5071] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 54.217194][ T5071] EXT4-fs (loop0): orphan cleanup on readonly fs [ 54.233990][ T5071] EXT4-fs (loop0): 1 truncate cleaned up [pid 5071] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5071] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5071] chdir("./file0") = 0 [pid 5071] ioctl(4, LOOP_CLR_FD) = 0 [pid 5071] close(4) = 0 [pid 5071] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5071] exit_group(0) = ? [pid 5071] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5071, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./0/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./0/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./0/binderfs") = 0 [ 54.245950][ T5071] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 54.271088][ T5071] syz-executor283 (5071) used greatest stack depth: 15792 bytes left umount2("./0/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./0/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./0/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./0/file0") = 0 getdents64(3, 0x555557255620 /* 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) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555572545d0) = 5074 ./strace-static-x86_64: Process 5074 attached [pid 5074] chdir("./1") = 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 [ 54.289064][ T5070] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5074] memfd_create("syzkaller", 0) = 3 [pid 5074] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5074] munmap(0x7f9a8a8ad000, 262144) = 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 [ 54.346576][ T5074] loop0: detected capacity change from 0 to 512 [ 54.358435][ T5074] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 54.368888][ T5074] EXT4-fs (loop0): orphan cleanup on readonly fs [ 54.380435][ T5074] EXT4-fs (loop0): 1 truncate cleaned up [pid 5074] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [pid 5074] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=4 /* 0.04 s */} --- umount2("./1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./1/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./1/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./1/binderfs") = 0 umount2("./1/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./1/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./1/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./1/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5076 ./strace-static-x86_64: Process 5076 attached [pid 5076] chdir("./2") = 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) = 0x7f9a8a8ad000 [ 54.395396][ T5074] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 54.435912][ T5070] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [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"..., 262144) = 262144 [pid 5076] munmap(0x7f9a8a8ad000, 262144) = 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 [ 54.482228][ T5076] loop0: detected capacity change from 0 to 512 [ 54.492970][ T5076] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 54.504410][ T5076] EXT4-fs (loop0): orphan cleanup on readonly fs [ 54.515439][ T5076] EXT4-fs (loop0): 1 truncate cleaned up [pid 5076] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [pid 5076] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=4 /* 0.04 s */} --- umount2("./2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./2/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./2/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./2/binderfs") = 0 umount2("./2/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./2/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./2/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./2/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5078 ./strace-static-x86_64: Process 5078 attached [pid 5078] chdir("./3") = 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 [ 54.528446][ T5076] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 54.566239][ T5070] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [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) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5078] munmap(0x7f9a8a8ad000, 262144) = 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 [ 54.626460][ T5078] loop0: detected capacity change from 0 to 512 [ 54.636596][ T5078] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 54.647749][ T5078] EXT4-fs (loop0): orphan cleanup on readonly fs [ 54.658614][ T5078] EXT4-fs (loop0): 1 truncate cleaned up [pid 5078] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [pid 5078] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=4 /* 0.04 s */} --- umount2("./3", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./3", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./3/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./3/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./3/binderfs") = 0 umount2("./3/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./3/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./3/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./3/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5080 ./strace-static-x86_64: Process 5080 attached [pid 5080] chdir("./4") = 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) = 0x7f9a8a8ad000 [ 54.695258][ T5078] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 54.731766][ T5070] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [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"..., 262144) = 262144 [pid 5080] munmap(0x7f9a8a8ad000, 262144) = 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 [ 54.779838][ T5080] loop0: detected capacity change from 0 to 512 [ 54.789649][ T5080] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 54.799971][ T5080] EXT4-fs (loop0): orphan cleanup on readonly fs [ 54.810013][ T5080] EXT4-fs (loop0): 1 truncate cleaned up [pid 5080] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [pid 5080] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=5 /* 0.05 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./4/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./4/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./4/binderfs") = 0 umount2("./4/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./4/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./4/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./4/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5082 ./strace-static-x86_64: Process 5082 attached [pid 5082] chdir("./5") = 0 [pid 5082] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5082] setpgid(0, 0) = 0 [ 54.835490][ T5080] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 54.875758][ T5070] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [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 [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) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5082] munmap(0x7f9a8a8ad000, 262144) = 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 [ 54.930090][ T5082] loop0: detected capacity change from 0 to 512 [ 54.940951][ T5082] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 54.951380][ T5082] EXT4-fs (loop0): orphan cleanup on readonly fs [ 54.962434][ T5082] EXT4-fs (loop0): 1 truncate cleaned up [pid 5082] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [pid 5082] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=5 /* 0.05 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./5/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./5/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./5/binderfs") = 0 umount2("./5/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./5/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./5/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./5/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5084 ./strace-static-x86_64: Process 5084 attached [pid 5084] chdir("./6") = 0 [pid 5084] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [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) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5084] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5084] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 54.975450][ T5082] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 55.008379][ T5070] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5084] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5084] close(3) = 0 [pid 5084] mkdir("./file0", 0777) = 0 [ 55.059741][ T5084] loop0: detected capacity change from 0 to 512 [ 55.070182][ T5084] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 55.081028][ T5084] EXT4-fs (loop0): orphan cleanup on readonly fs [ 55.091528][ T5084] EXT4-fs (loop0): 1 truncate cleaned up [pid 5084] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [pid 5084] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./6", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./6", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./6/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./6/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./6/binderfs") = 0 umount2("./6/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./6/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./6/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./6/file0") = 0 getdents64(3, 0x555557255620 /* 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) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555572545d0) = 5086 ./strace-static-x86_64: Process 5086 attached [pid 5086] chdir("./7") = 0 [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) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5086] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5086] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 55.105465][ T5084] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 55.129243][ T5070] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5086] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5086] close(3) = 0 [pid 5086] mkdir("./file0", 0777) = 0 [ 55.166088][ T5086] loop0: detected capacity change from 0 to 512 [ 55.176632][ T5086] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 55.190635][ T5086] EXT4-fs (loop0): orphan cleanup on readonly fs [ 55.202202][ T5086] EXT4-fs (loop0): 1 truncate cleaned up [pid 5086] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [pid 5086] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./7", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./7", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./7/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./7/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./7/binderfs") = 0 umount2("./7/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./7/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./7/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./7/file0") = 0 getdents64(3, 0x555557255620 /* 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./strace-static-x86_64: Process 5088 attached , child_tidptr=0x5555572545d0) = 5088 [pid 5088] chdir("./8") = 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 [ 55.245559][ T5086] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 55.280298][ T5070] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [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) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5088] munmap(0x7f9a8a8ad000, 262144) = 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 [ 55.339057][ T5088] loop0: detected capacity change from 0 to 512 [ 55.349896][ T5088] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 55.360337][ T5088] EXT4-fs (loop0): orphan cleanup on readonly fs [ 55.369848][ T5088] EXT4-fs (loop0): 1 truncate cleaned up [pid 5088] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [pid 5088] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=4 /* 0.04 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./8/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./8/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./8/binderfs") = 0 [ 55.395391][ T5088] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. umount2("./8/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./8/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./8/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./8/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5090 ./strace-static-x86_64: Process 5090 attached [pid 5090] chdir("./9") = 0 [pid 5090] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5090] setpgid(0, 0) = 0 [pid 5090] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5090] write(3, "1000", 4) = 4 [pid 5090] close(3) = 0 [pid 5090] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5090] memfd_create("syzkaller", 0) = 3 [pid 5090] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5090] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5090] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 55.435955][ T5070] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5090] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5090] close(3) = 0 [pid 5090] mkdir("./file0", 0777) = 0 [ 55.495079][ T5090] loop0: detected capacity change from 0 to 512 [ 55.507701][ T5090] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 55.517932][ T5090] EXT4-fs (loop0): orphan cleanup on readonly fs [ 55.529029][ T5090] EXT4-fs (loop0): 1 truncate cleaned up [pid 5090] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [pid 5090] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=4 /* 0.04 s */} --- umount2("./9", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./9", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./9/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./9/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./9/binderfs") = 0 umount2("./9/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./9/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./9/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./9/file0") = 0 getdents64(3, 0x555557255620 /* 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 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5092 attached , child_tidptr=0x5555572545d0) = 5092 [pid 5092] chdir("./10") = 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) = 0x7f9a8a8ad000 [ 55.555350][ T5090] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 55.577317][ T5070] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [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"..., 262144) = 262144 [pid 5092] munmap(0x7f9a8a8ad000, 262144) = 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 [ 55.638635][ T5092] loop0: detected capacity change from 0 to 512 [ 55.648760][ T5092] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 55.659190][ T5092] EXT4-fs (loop0): orphan cleanup on readonly fs [ 55.668680][ T5092] EXT4-fs (loop0): 1 truncate cleaned up [pid 5092] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [pid 5092] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./10/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./10/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./10/binderfs") = 0 umount2("./10/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./10/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./10/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./10/file0") = 0 getdents64(3, 0x555557255620 /* 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) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555572545d0) = 5094 ./strace-static-x86_64: Process 5094 attached [pid 5094] chdir("./11") = 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) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5094] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5094] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 55.695360][ T5092] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 55.721556][ T5070] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5094] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5094] close(3) = 0 [pid 5094] mkdir("./file0", 0777) = 0 [ 55.763073][ T5094] loop0: detected capacity change from 0 to 512 [ 55.766498][ T5072] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 55.781454][ T5094] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 55.792373][ T5094] EXT4-fs (loop0): orphan cleanup on readonly fs [ 55.802440][ T5094] EXT4-fs (loop0): 1 truncate cleaned up [pid 5094] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [pid 5094] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=5 /* 0.05 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./11/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./11/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./11/binderfs") = 0 umount2("./11/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./11/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./11/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./11/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5096 ./strace-static-x86_64: Process 5096 attached [pid 5096] chdir("./12") = 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) = 0x7f9a8a8ad000 [ 55.815649][ T5094] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 55.854815][ T5070] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [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"..., 262144) = 262144 [pid 5096] munmap(0x7f9a8a8ad000, 262144) = 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 [ 55.892890][ T5096] loop0: detected capacity change from 0 to 512 [ 55.899870][ T5072] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 55.912481][ T5096] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 55.924509][ T5096] EXT4-fs (loop0): orphan cleanup on readonly fs [ 55.935827][ T5096] EXT4-fs (loop0): 1 truncate cleaned up [pid 5096] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [pid 5096] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=4 /* 0.04 s */} --- umount2("./12", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./12", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./12/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./12/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./12/binderfs") = 0 umount2("./12/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./12/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./12/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./12/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5098 ./strace-static-x86_64: Process 5098 attached [pid 5098] chdir("./13") = 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) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5098] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5098] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 55.965325][ T5096] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 55.997408][ T5070] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5098] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5098] close(3) = 0 [pid 5098] mkdir("./file0", 0777) = 0 [ 56.040689][ T5098] loop0: detected capacity change from 0 to 512 [ 56.052509][ T5098] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 56.063885][ T5098] EXT4-fs (loop0): orphan cleanup on readonly fs [ 56.074790][ T5098] EXT4-fs (loop0): 1 truncate cleaned up [pid 5098] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [pid 5098] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=4 /* 0.04 s */} --- umount2("./13", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./13", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./13/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./13/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./13/binderfs") = 0 umount2("./13/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./13/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./13/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./13/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5101 ./strace-static-x86_64: Process 5101 attached [pid 5101] chdir("./14") = 0 [pid 5101] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5101] setpgid(0, 0) = 0 [ 56.088244][ T5098] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 56.125274][ T5070] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5101] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5101] write(3, "1000", 4) = 4 [pid 5101] close(3) = 0 [pid 5101] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5101] memfd_create("syzkaller", 0) = 3 [pid 5101] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5101] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5101] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5101] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5101] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5101] close(3) = 0 [pid 5101] mkdir("./file0", 0777) = 0 [ 56.187117][ T5101] loop0: detected capacity change from 0 to 512 [ 56.196664][ T5101] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 56.207090][ T5101] EXT4-fs (loop0): orphan cleanup on readonly fs [ 56.218697][ T5101] EXT4-fs (loop0): 1 truncate cleaned up [pid 5101] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5101] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5101] chdir("./file0") = 0 [pid 5101] ioctl(4, LOOP_CLR_FD) = 0 [pid 5101] close(4) = 0 [pid 5101] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5101] exit_group(0) = ? [pid 5101] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5101, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./14", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./14", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./14/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./14/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./14/binderfs") = 0 umount2("./14/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./14/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./14/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./14/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5103 ./strace-static-x86_64: Process 5103 attached [pid 5103] chdir("./15") = 0 [pid 5103] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5103] setpgid(0, 0) = 0 [pid 5103] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5103] write(3, "1000", 4) = 4 [pid 5103] close(3) = 0 [pid 5103] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5103] memfd_create("syzkaller", 0) = 3 [pid 5103] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [ 56.245508][ T5101] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 56.284171][ T5070] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5103] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5103] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5103] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5103] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5103] close(3) = 0 [pid 5103] mkdir("./file0", 0777) = 0 [ 56.330476][ T5103] loop0: detected capacity change from 0 to 512 [ 56.341323][ T5103] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 56.352388][ T5103] EXT4-fs (loop0): orphan cleanup on readonly fs [ 56.364793][ T5103] EXT4-fs (loop0): 1 truncate cleaned up [pid 5103] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5103] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5103] chdir("./file0") = 0 [pid 5103] ioctl(4, LOOP_CLR_FD) = 0 [pid 5103] close(4) = 0 [pid 5103] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5103] exit_group(0) = ? [pid 5103] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5103, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./15", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./15", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./15/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./15/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./15/binderfs") = 0 umount2("./15/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./15/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./15/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./15/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5105 ./strace-static-x86_64: Process 5105 attached [pid 5105] chdir("./16") = 0 [pid 5105] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5105] setpgid(0, 0) = 0 [pid 5105] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5105] write(3, "1000", 4) = 4 [ 56.395516][ T5103] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 56.428068][ T5070] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5105] close(3) = 0 [pid 5105] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5105] memfd_create("syzkaller", 0) = 3 [pid 5105] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5105] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5105] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5105] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5105] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5105] close(3) = 0 [pid 5105] mkdir("./file0", 0777) = 0 [ 56.490819][ T5105] loop0: detected capacity change from 0 to 512 [ 56.510869][ T5105] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 56.521355][ T5105] EXT4-fs (loop0): orphan cleanup on readonly fs [ 56.533071][ T5105] EXT4-fs (loop0): 1 truncate cleaned up [pid 5105] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5105] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5105] chdir("./file0") = 0 [pid 5105] ioctl(4, LOOP_CLR_FD) = 0 [pid 5105] close(4) = 0 [pid 5105] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5105] exit_group(0) = ? [pid 5105] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5105, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./16/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./16/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./16/binderfs") = 0 umount2("./16/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./16/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./16/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./16/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5107 ./strace-static-x86_64: Process 5107 attached [pid 5107] chdir("./17") = 0 [pid 5107] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5107] setpgid(0, 0) = 0 [pid 5107] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5107] write(3, "1000", 4) = 4 [pid 5107] close(3) = 0 [pid 5107] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5107] memfd_create("syzkaller", 0) = 3 [pid 5107] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5107] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5107] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5107] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 56.565722][ T5105] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 56.590718][ T5070] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5107] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5107] close(3) = 0 [pid 5107] mkdir("./file0", 0777) = 0 [ 56.637862][ T5107] loop0: detected capacity change from 0 to 512 [ 56.644462][ T5072] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 56.658227][ T5107] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 56.670879][ T5107] EXT4-fs (loop0): orphan cleanup on readonly fs [pid 5107] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5107] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5107] chdir("./file0") = 0 [pid 5107] ioctl(4, LOOP_CLR_FD) = 0 [pid 5107] close(4) = 0 [pid 5107] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5107] exit_group(0) = ? [pid 5107] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5107, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./17/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./17/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./17/binderfs") = 0 [ 56.689580][ T5107] EXT4-fs (loop0): 1 truncate cleaned up [ 56.715809][ T5107] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. umount2("./17/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./17/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./17/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./17/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5109 ./strace-static-x86_64: Process 5109 attached [pid 5109] chdir("./18") = 0 [pid 5109] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5109] setpgid(0, 0) = 0 [pid 5109] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5109] write(3, "1000", 4) = 4 [pid 5109] close(3) = 0 [pid 5109] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5109] memfd_create("syzkaller", 0) = 3 [pid 5109] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5109] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5109] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5109] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 56.757743][ T5070] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5109] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5109] close(3) = 0 [pid 5109] mkdir("./file0", 0777) = 0 [ 56.816425][ T5109] loop0: detected capacity change from 0 to 512 [ 56.826174][ T5109] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 56.837138][ T5109] EXT4-fs (loop0): orphan cleanup on readonly fs [ 56.848507][ T5109] EXT4-fs (loop0): 1 truncate cleaned up [pid 5109] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5109] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5109] chdir("./file0") = 0 [pid 5109] ioctl(4, LOOP_CLR_FD) = 0 [pid 5109] close(4) = 0 [pid 5109] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5109] exit_group(0) = ? [pid 5109] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5109, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- umount2("./18", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./18", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./18/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./18/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./18/binderfs") = 0 umount2("./18/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./18/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./18/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./18/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5111 ./strace-static-x86_64: Process 5111 attached [pid 5111] chdir("./19") = 0 [pid 5111] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5111] setpgid(0, 0) = 0 [ 56.885414][ T5109] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 56.917666][ T5070] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5111] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5111] write(3, "1000", 4) = 4 [pid 5111] close(3) = 0 [pid 5111] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5111] memfd_create("syzkaller", 0) = 3 [pid 5111] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5111] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5111] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5111] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5111] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5111] close(3) = 0 [pid 5111] mkdir("./file0", 0777) = 0 [ 56.974184][ T5111] loop0: detected capacity change from 0 to 512 [ 56.984020][ T5111] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 56.994633][ T5111] EXT4-fs (loop0): orphan cleanup on readonly fs [ 57.004720][ T5111] EXT4-fs (loop0): 1 truncate cleaned up [pid 5111] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5111] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5111] chdir("./file0") = 0 [pid 5111] ioctl(4, LOOP_CLR_FD) = 0 [pid 5111] close(4) = 0 [pid 5111] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5111] exit_group(0) = ? [pid 5111] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5111, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./19/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./19/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./19/binderfs") = 0 umount2("./19/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./19/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./19/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./19/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5113 ./strace-static-x86_64: Process 5113 attached [pid 5113] chdir("./20") = 0 [pid 5113] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [ 57.035490][ T5111] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 57.074425][ T5070] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5113] setpgid(0, 0) = 0 [pid 5113] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5113] write(3, "1000", 4) = 4 [pid 5113] close(3) = 0 [pid 5113] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5113] memfd_create("syzkaller", 0) = 3 [pid 5113] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5113] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5113] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5113] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5113] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5113] close(3) = 0 [pid 5113] mkdir("./file0", 0777) = 0 [ 57.133002][ T5113] loop0: detected capacity change from 0 to 512 [ 57.145359][ T5113] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 57.156751][ T5113] EXT4-fs (loop0): orphan cleanup on readonly fs [ 57.167900][ T5113] EXT4-fs (loop0): 1 truncate cleaned up [pid 5113] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5113] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5113] chdir("./file0") = 0 [pid 5113] ioctl(4, LOOP_CLR_FD) = 0 [pid 5113] close(4) = 0 [pid 5113] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5113] exit_group(0) = ? [pid 5113] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5113, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- umount2("./20", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./20", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./20/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./20/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./20/binderfs") = 0 umount2("./20/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./20/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./20/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./20/file0") = 0 getdents64(3, 0x555557255620 /* 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./strace-static-x86_64: Process 5115 attached , child_tidptr=0x5555572545d0) = 5115 [pid 5115] chdir("./21") = 0 [pid 5115] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5115] setpgid(0, 0) = 0 [pid 5115] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5115] write(3, "1000", 4) = 4 [pid 5115] close(3) = 0 [pid 5115] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5115] memfd_create("syzkaller", 0) = 3 [pid 5115] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5115] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5115] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5115] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 57.205339][ T5113] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 57.230835][ T5070] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5115] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5115] close(3) = 0 [pid 5115] mkdir("./file0", 0777) = 0 [ 57.273929][ T5115] loop0: detected capacity change from 0 to 512 [ 57.286094][ T5115] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 57.297529][ T5115] EXT4-fs (loop0): orphan cleanup on readonly fs [ 57.309885][ T5115] EXT4-fs (loop0): 1 truncate cleaned up [pid 5115] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5115] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5115] chdir("./file0") = 0 [pid 5115] ioctl(4, LOOP_CLR_FD) = 0 [pid 5115] close(4) = 0 [pid 5115] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5115] exit_group(0) = ? [pid 5115] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5115, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- umount2("./21", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./21", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./21/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./21/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./21/binderfs") = 0 umount2("./21/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./21/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./21/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./21/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5117 ./strace-static-x86_64: Process 5117 attached [pid 5117] chdir("./22") = 0 [pid 5117] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5117] setpgid(0, 0) = 0 [pid 5117] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5117] write(3, "1000", 4) = 4 [pid 5117] close(3) = 0 [ 57.335521][ T5115] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 57.369271][ T5070] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5117] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5117] memfd_create("syzkaller", 0) = 3 [pid 5117] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5117] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5117] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5117] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5117] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5117] close(3) = 0 [pid 5117] mkdir("./file0", 0777) = 0 [ 57.423794][ T5117] loop0: detected capacity change from 0 to 512 [ 57.445549][ T5117] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 57.456909][ T5117] EXT4-fs (loop0): orphan cleanup on readonly fs [ 57.467439][ T5117] EXT4-fs (loop0): 1 truncate cleaned up [pid 5117] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5117] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5117] chdir("./file0") = 0 [pid 5117] ioctl(4, LOOP_CLR_FD) = 0 [pid 5117] close(4) = 0 [pid 5117] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5117] exit_group(0) = ? [pid 5117] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5117, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./22", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./22", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./22/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./22/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./22/binderfs") = 0 [ 57.505317][ T5117] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. umount2("./22/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./22/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./22/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./22/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5119 ./strace-static-x86_64: Process 5119 attached [pid 5119] chdir("./23") = 0 [pid 5119] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5119] setpgid(0, 0) = 0 [pid 5119] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5119] write(3, "1000", 4) = 4 [pid 5119] close(3) = 0 [pid 5119] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5119] memfd_create("syzkaller", 0) = 3 [pid 5119] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5119] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5119] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5119] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 57.546357][ T5070] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5119] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5119] close(3) = 0 [pid 5119] mkdir("./file0", 0777) = 0 [ 57.604367][ T5119] loop0: detected capacity change from 0 to 512 [ 57.615644][ T5119] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 57.626378][ T5119] EXT4-fs (loop0): orphan cleanup on readonly fs [ 57.637693][ T5119] EXT4-fs (loop0): 1 truncate cleaned up [pid 5119] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5119] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5119] chdir("./file0") = 0 [pid 5119] ioctl(4, LOOP_CLR_FD) = 0 [pid 5119] close(4) = 0 [pid 5119] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5119] exit_group(0) = ? [pid 5119] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5119, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./23/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./23/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./23/binderfs") = 0 umount2("./23/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./23/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./23/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./23/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5121 [ 57.665345][ T5119] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 57.694277][ T5070] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ./strace-static-x86_64: Process 5121 attached [pid 5121] chdir("./24") = 0 [pid 5121] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5121] setpgid(0, 0) = 0 [pid 5121] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5121] write(3, "1000", 4) = 4 [pid 5121] close(3) = 0 [pid 5121] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5121] memfd_create("syzkaller", 0) = 3 [pid 5121] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5121] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5121] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5121] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5121] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5121] close(3) = 0 [pid 5121] mkdir("./file0", 0777) = 0 [ 57.761957][ T5121] loop0: detected capacity change from 0 to 512 [ 57.775748][ T5121] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 57.786515][ T5121] EXT4-fs (loop0): orphan cleanup on readonly fs [ 57.796712][ T5121] EXT4-fs (loop0): 1 truncate cleaned up [pid 5121] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5121] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5121] chdir("./file0") = 0 [pid 5121] ioctl(4, LOOP_CLR_FD) = 0 [pid 5121] close(4) = 0 [pid 5121] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5121] exit_group(0) = ? [pid 5121] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5121, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./24/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./24/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./24/binderfs") = 0 umount2("./24/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./24/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./24/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./24/file0") = 0 getdents64(3, 0x555557255620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./24") = 0 mkdir("./25", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555572545d0) = 5123 ./strace-static-x86_64: Process 5123 attached [pid 5123] chdir("./25") = 0 [pid 5123] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5123] setpgid(0, 0) = 0 [pid 5123] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5123] write(3, "1000", 4) = 4 [pid 5123] close(3) = 0 [pid 5123] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5123] memfd_create("syzkaller", 0) = 3 [pid 5123] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [ 57.810468][ T5121] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 57.844323][ T5070] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5123] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5123] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5123] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5123] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5123] close(3) = 0 [pid 5123] mkdir("./file0", 0777) = 0 [ 57.900658][ T5123] loop0: detected capacity change from 0 to 512 [ 57.911598][ T5123] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 57.922294][ T5123] EXT4-fs (loop0): orphan cleanup on readonly fs [ 57.932591][ T5123] EXT4-fs (loop0): 1 truncate cleaned up [pid 5123] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5123] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5123] chdir("./file0") = 0 [pid 5123] ioctl(4, LOOP_CLR_FD) = 0 [pid 5123] close(4) = 0 [pid 5123] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5123] exit_group(0) = ? [pid 5123] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5123, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./25/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./25/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./25/binderfs") = 0 umount2("./25/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./25/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./25/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./25/file0") = 0 getdents64(3, 0x555557255620 /* 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) [ 57.946834][ T5123] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 57.981012][ T5070] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5125 attached , child_tidptr=0x5555572545d0) = 5125 [pid 5125] chdir("./26") = 0 [pid 5125] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5125] setpgid(0, 0) = 0 [pid 5125] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5125] write(3, "1000", 4) = 4 [pid 5125] close(3) = 0 [pid 5125] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5125] memfd_create("syzkaller", 0) = 3 [pid 5125] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5125] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5125] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5125] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5125] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5125] close(3) = 0 [pid 5125] mkdir("./file0", 0777) = 0 [ 58.050226][ T5125] loop0: detected capacity change from 0 to 512 [ 58.059283][ T5125] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 58.069802][ T5125] EXT4-fs (loop0): orphan cleanup on readonly fs [ 58.080025][ T5125] EXT4-fs (loop0): 1 truncate cleaned up [pid 5125] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5125] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5125] chdir("./file0") = 0 [pid 5125] ioctl(4, LOOP_CLR_FD) = 0 [pid 5125] close(4) = 0 [pid 5125] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5125] exit_group(0) = ? [pid 5125] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5125, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./26/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./26/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./26/binderfs") = 0 umount2("./26/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./26/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./26/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./26/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5127 ./strace-static-x86_64: Process 5127 attached [pid 5127] chdir("./27") = 0 [pid 5127] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5127] setpgid(0, 0) = 0 [pid 5127] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5127] write(3, "1000", 4) = 4 [pid 5127] close(3) = 0 [ 58.105311][ T5125] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 58.133921][ T5070] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5127] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5127] memfd_create("syzkaller", 0) = 3 [pid 5127] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5127] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5127] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5127] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5127] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5127] close(3) = 0 [pid 5127] mkdir("./file0", 0777) = 0 [ 58.197556][ T5127] loop0: detected capacity change from 0 to 512 [ 58.206787][ T5127] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 58.217109][ T5127] EXT4-fs (loop0): orphan cleanup on readonly fs [ 58.228667][ T5127] EXT4-fs (loop0): 1 truncate cleaned up [pid 5127] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5127] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5127] chdir("./file0") = 0 [pid 5127] ioctl(4, LOOP_CLR_FD) = 0 [pid 5127] close(4) = 0 [pid 5127] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5127] exit_group(0) = ? [pid 5127] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5127, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./27/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./27/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./27/binderfs") = 0 umount2("./27/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./27/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./27/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./27/file0") = 0 getdents64(3, 0x555557255620 /* 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./strace-static-x86_64: Process 5129 attached , child_tidptr=0x5555572545d0) = 5129 [pid 5129] chdir("./28") = 0 [pid 5129] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5129] setpgid(0, 0) = 0 [pid 5129] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5129] write(3, "1000", 4) = 4 [pid 5129] close(3) = 0 [pid 5129] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5129] memfd_create("syzkaller", 0) = 3 [pid 5129] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [ 58.255483][ T5127] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 58.284461][ T5070] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5129] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5129] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5129] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5129] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5129] close(3) = 0 [pid 5129] mkdir("./file0", 0777) = 0 [ 58.341071][ T5129] loop0: detected capacity change from 0 to 512 [ 58.350470][ T5129] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 58.361083][ T5129] EXT4-fs (loop0): orphan cleanup on readonly fs [ 58.370500][ T5129] EXT4-fs (loop0): 1 truncate cleaned up [pid 5129] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5129] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5129] chdir("./file0") = 0 [pid 5129] ioctl(4, LOOP_CLR_FD) = 0 [pid 5129] close(4) = 0 [pid 5129] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5129] exit_group(0) = ? [pid 5129] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5129, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./28/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./28/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./28/binderfs") = 0 [ 58.395220][ T5129] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. umount2("./28/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./28/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./28/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./28/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5131 ./strace-static-x86_64: Process 5131 attached [pid 5131] chdir("./29") = 0 [pid 5131] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5131] setpgid(0, 0) = 0 [pid 5131] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5131] write(3, "1000", 4) = 4 [pid 5131] close(3) = 0 [pid 5131] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5131] memfd_create("syzkaller", 0) = 3 [pid 5131] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5131] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5131] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5131] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 58.435678][ T5070] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5131] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5131] close(3) = 0 [pid 5131] mkdir("./file0", 0777) = 0 [ 58.491743][ T5131] loop0: detected capacity change from 0 to 512 [ 58.502954][ T5131] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 58.513906][ T5131] EXT4-fs (loop0): orphan cleanup on readonly fs [ 58.523921][ T5131] EXT4-fs (loop0): 1 truncate cleaned up [pid 5131] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5131] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5131] chdir("./file0") = 0 [pid 5131] ioctl(4, LOOP_CLR_FD) = 0 [pid 5131] close(4) = 0 [pid 5131] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5131] exit_group(0) = ? [pid 5131] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5131, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./29", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./29", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./29/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./29/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./29/binderfs") = 0 umount2("./29/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./29/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./29/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./29/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5133 [ 58.555348][ T5131] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 58.591237][ T5070] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ./strace-static-x86_64: Process 5133 attached [pid 5133] chdir("./30") = 0 [pid 5133] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5133] setpgid(0, 0) = 0 [pid 5133] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5133] write(3, "1000", 4) = 4 [pid 5133] close(3) = 0 [pid 5133] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5133] memfd_create("syzkaller", 0) = 3 [pid 5133] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5133] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5133] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5133] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5133] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5133] close(3) = 0 [pid 5133] mkdir("./file0", 0777) = 0 [ 58.651289][ T5133] loop0: detected capacity change from 0 to 512 [ 58.662090][ T5133] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 58.673114][ T5133] EXT4-fs (loop0): orphan cleanup on readonly fs [ 58.683412][ T5133] EXT4-fs (loop0): 1 truncate cleaned up [pid 5133] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5133] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5133] chdir("./file0") = 0 [pid 5133] ioctl(4, LOOP_CLR_FD) = 0 [pid 5133] close(4) = 0 [pid 5133] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5133] exit_group(0) = ? [pid 5133] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5133, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./30/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./30/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./30/binderfs") = 0 umount2("./30/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./30/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./30/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./30/file0") = 0 getdents64(3, 0x555557255620 /* 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 [ 58.715339][ T5133] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 58.751262][ T5070] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5135 attached , child_tidptr=0x5555572545d0) = 5135 [pid 5135] chdir("./31") = 0 [pid 5135] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5135] setpgid(0, 0) = 0 [pid 5135] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5135] write(3, "1000", 4) = 4 [pid 5135] close(3) = 0 [pid 5135] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5135] memfd_create("syzkaller", 0) = 3 [pid 5135] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5135] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5135] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5135] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5135] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5135] close(3) = 0 [pid 5135] mkdir("./file0", 0777) = 0 [ 58.814718][ T5135] loop0: detected capacity change from 0 to 512 [ 58.824639][ T5135] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 58.835571][ T5135] EXT4-fs (loop0): orphan cleanup on readonly fs [ 58.847296][ T5135] EXT4-fs (loop0): 1 truncate cleaned up [pid 5135] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5135] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5135] chdir("./file0") = 0 [pid 5135] ioctl(4, LOOP_CLR_FD) = 0 [pid 5135] close(4) = 0 [pid 5135] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5135] exit_group(0) = ? [pid 5135] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5135, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./31/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./31/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./31/binderfs") = 0 umount2("./31/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./31/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./31/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./31/file0") = 0 getdents64(3, 0x555557255620 /* 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) [ 58.875332][ T5135] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 58.912652][ T5070] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5137 attached , child_tidptr=0x5555572545d0) = 5137 [pid 5137] chdir("./32") = 0 [pid 5137] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5137] setpgid(0, 0) = 0 [pid 5137] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5137] write(3, "1000", 4) = 4 [pid 5137] close(3) = 0 [pid 5137] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5137] memfd_create("syzkaller", 0) = 3 [pid 5137] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5137] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5137] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5137] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5137] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5137] close(3) = 0 [pid 5137] mkdir("./file0", 0777) = 0 [pid 5137] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5137] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5137] chdir("./file0") = 0 [pid 5137] ioctl(4, LOOP_CLR_FD) = 0 [pid 5137] close(4) = 0 [pid 5137] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5137] exit_group(0) = ? [pid 5137] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5137, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- umount2("./32", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./32", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./32/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 58.974134][ T5137] loop0: detected capacity change from 0 to 512 [ 58.986270][ T5137] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 58.997743][ T5137] EXT4-fs (loop0): orphan cleanup on readonly fs [ 59.008199][ T5137] EXT4-fs (loop0): 1 truncate cleaned up lstat("./32/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./32/binderfs") = 0 umount2("./32/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./32/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./32/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./32/file0") = 0 getdents64(3, 0x555557255620 /* 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./strace-static-x86_64: Process 5139 attached , child_tidptr=0x5555572545d0) = 5139 [pid 5139] chdir("./33") = 0 [pid 5139] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5139] setpgid(0, 0) = 0 [pid 5139] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5139] write(3, "1000", 4) = 4 [pid 5139] close(3) = 0 [pid 5139] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5139] memfd_create("syzkaller", 0) = 3 [pid 5139] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5139] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5139] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5139] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5139] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5139] close(3) = 0 [pid 5139] mkdir("./file0", 0777) = 0 [pid 5139] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5139] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5139] chdir("./file0") = 0 [pid 5139] ioctl(4, LOOP_CLR_FD) = 0 [pid 5139] close(4) = 0 [pid 5139] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5139] exit_group(0) = ? [pid 5139] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5139, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./33", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./33", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./33/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 59.114010][ T5139] loop0: detected capacity change from 0 to 512 [ 59.125096][ T5139] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 59.136036][ T5139] EXT4-fs (loop0): orphan cleanup on readonly fs [ 59.146673][ T5139] EXT4-fs (loop0): 1 truncate cleaned up lstat("./33/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./33/binderfs") = 0 umount2("./33/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./33/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./33/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./33/file0") = 0 getdents64(3, 0x555557255620 /* 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 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555572545d0) = 5141 ./strace-static-x86_64: Process 5141 attached [pid 5141] chdir("./34") = 0 [pid 5141] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5141] setpgid(0, 0) = 0 [pid 5141] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5141] write(3, "1000", 4) = 4 [pid 5141] close(3) = 0 [pid 5141] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5141] memfd_create("syzkaller", 0) = 3 [pid 5141] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5141] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5141] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5141] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5141] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5141] close(3) = 0 [pid 5141] mkdir("./file0", 0777) = 0 [pid 5141] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5141] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5141] chdir("./file0") = 0 [pid 5141] ioctl(4, LOOP_CLR_FD) = 0 [pid 5141] close(4) = 0 [pid 5141] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5141] exit_group(0) = ? [pid 5141] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5141, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- umount2("./34", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./34", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./34/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./34/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [ 59.246037][ T5141] loop0: detected capacity change from 0 to 512 [ 59.255685][ T5141] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 59.266890][ T5141] EXT4-fs (loop0): orphan cleanup on readonly fs [ 59.276730][ T5141] EXT4-fs (loop0): 1 truncate cleaned up unlink("./34/binderfs") = 0 umount2("./34/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./34/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./34/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./34/file0") = 0 getdents64(3, 0x555557255620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./34") = 0 mkdir("./35", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555572545d0) = 5143 ./strace-static-x86_64: Process 5143 attached [pid 5143] chdir("./35") = 0 [pid 5143] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5143] setpgid(0, 0) = 0 [pid 5143] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5143] write(3, "1000", 4) = 4 [pid 5143] close(3) = 0 [pid 5143] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5143] memfd_create("syzkaller", 0) = 3 [pid 5143] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5143] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5143] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5143] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5143] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5143] close(3) = 0 [pid 5143] mkdir("./file0", 0777) = 0 [pid 5143] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5143] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5143] chdir("./file0") = 0 [pid 5143] ioctl(4, LOOP_CLR_FD) = 0 [pid 5143] close(4) = 0 [pid 5143] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5143] exit_group(0) = ? [pid 5143] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5143, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./35", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./35", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./35/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./35/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./35/binderfs") = 0 umount2("./35/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./35/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./35/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 [ 59.372050][ T5143] loop0: detected capacity change from 0 to 512 [ 59.383049][ T5143] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 59.393999][ T5143] EXT4-fs (loop0): orphan cleanup on readonly fs [ 59.404903][ T5143] EXT4-fs (loop0): 1 truncate cleaned up rmdir("./35/file0") = 0 getdents64(3, 0x555557255620 /* 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 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555572545d0) = 5145 ./strace-static-x86_64: Process 5145 attached [pid 5145] chdir("./36") = 0 [pid 5145] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5145] setpgid(0, 0) = 0 [pid 5145] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5145] write(3, "1000", 4) = 4 [pid 5145] close(3) = 0 [pid 5145] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5145] memfd_create("syzkaller", 0) = 3 [pid 5145] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5145] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5145] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5145] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5145] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5145] close(3) = 0 [pid 5145] mkdir("./file0", 0777) = 0 [pid 5145] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5145] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5145] chdir("./file0") = 0 [pid 5145] ioctl(4, LOOP_CLR_FD) = 0 [pid 5145] close(4) = 0 [pid 5145] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5145] exit_group(0) = ? [ 59.472902][ T5145] loop0: detected capacity change from 0 to 512 [ 59.483636][ T5145] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 59.494426][ T5145] EXT4-fs (loop0): orphan cleanup on readonly fs [ 59.504871][ T5145] EXT4-fs (loop0): 1 truncate cleaned up [pid 5145] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5145, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./36/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./36/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./36/binderfs") = 0 umount2("./36/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./36/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./36/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./36/file0") = 0 getdents64(3, 0x555557255620 /* 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./strace-static-x86_64: Process 5147 attached , child_tidptr=0x5555572545d0) = 5147 [pid 5147] chdir("./37") = 0 [pid 5147] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5147] setpgid(0, 0) = 0 [pid 5147] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5147] write(3, "1000", 4) = 4 [pid 5147] close(3) = 0 [pid 5147] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5147] memfd_create("syzkaller", 0) = 3 [pid 5147] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5147] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5147] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5147] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5147] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5147] close(3) = 0 [pid 5147] mkdir("./file0", 0777) = 0 [pid 5147] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5147] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5147] chdir("./file0") = 0 [pid 5147] ioctl(4, LOOP_CLR_FD) = 0 [pid 5147] close(4) = 0 [pid 5147] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5147] exit_group(0) = ? [pid 5147] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5147, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./37", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./37", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./37/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./37/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./37/binderfs") = 0 umount2("./37/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./37/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./37/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./37/file0") = 0 getdents64(3, 0x555557255620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./37") = 0 mkdir("./38", 0777) = 0 [ 59.592197][ T5147] loop0: detected capacity change from 0 to 512 [ 59.602531][ T5147] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 59.613247][ T5147] EXT4-fs (loop0): orphan cleanup on readonly fs [ 59.622897][ T5147] EXT4-fs (loop0): 1 truncate cleaned up openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555572545d0) = 5149 ./strace-static-x86_64: Process 5149 attached [pid 5149] chdir("./38") = 0 [pid 5149] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5149] setpgid(0, 0) = 0 [pid 5149] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5149] write(3, "1000", 4) = 4 [pid 5149] close(3) = 0 [pid 5149] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5149] memfd_create("syzkaller", 0) = 3 [pid 5149] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5149] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5149] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5149] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5149] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5149] close(3) = 0 [pid 5149] mkdir("./file0", 0777) = 0 [pid 5149] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5149] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5149] chdir("./file0") = 0 [pid 5149] ioctl(4, LOOP_CLR_FD) = 0 [pid 5149] close(4) = 0 [pid 5149] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5149] exit_group(0) = ? [pid 5149] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5149, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./38", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./38", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./38/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./38/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./38/binderfs") = 0 umount2("./38/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./38/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./38/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./38/file0") = 0 getdents64(3, 0x555557255620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./38") = 0 mkdir("./39", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_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 5151 attached [pid 5151] chdir("./39") = 0 [ 59.704446][ T5149] loop0: detected capacity change from 0 to 512 [ 59.714546][ T5149] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 59.725109][ T5149] EXT4-fs (loop0): orphan cleanup on readonly fs [ 59.734520][ T5149] EXT4-fs (loop0): 1 truncate cleaned up [pid 5151] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5151] setpgid(0, 0) = 0 [pid 5151] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5070] <... clone resumed>, child_tidptr=0x5555572545d0) = 5151 [pid 5151] <... openat resumed>) = 3 [pid 5151] write(3, "1000", 4) = 4 [pid 5151] close(3) = 0 [pid 5151] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5151] memfd_create("syzkaller", 0) = 3 [pid 5151] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5151] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5151] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5151] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5151] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5151] close(3) = 0 [pid 5151] mkdir("./file0", 0777) = 0 [pid 5151] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5151] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5151] chdir("./file0") = 0 [pid 5151] ioctl(4, LOOP_CLR_FD) = 0 [pid 5151] close(4) = 0 [pid 5151] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5151] exit_group(0) = ? [pid 5151] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5151, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./39", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./39", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./39/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./39/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./39/binderfs") = 0 umount2("./39/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./39/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./39/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 [ 59.799690][ T5151] loop0: detected capacity change from 0 to 512 [ 59.811119][ T5151] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 59.821664][ T5151] EXT4-fs (loop0): orphan cleanup on readonly fs [ 59.831435][ T5151] EXT4-fs (loop0): 1 truncate cleaned up fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./39/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5153 ./strace-static-x86_64: Process 5153 attached [pid 5153] chdir("./40") = 0 [pid 5153] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5153] setpgid(0, 0) = 0 [pid 5153] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5153] write(3, "1000", 4) = 4 [pid 5153] close(3) = 0 [pid 5153] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5153] memfd_create("syzkaller", 0) = 3 [pid 5153] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5153] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5153] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5153] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5153] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5153] close(3) = 0 [pid 5153] mkdir("./file0", 0777) = 0 [pid 5153] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5153] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5153] chdir("./file0") = 0 [pid 5153] ioctl(4, LOOP_CLR_FD) = 0 [pid 5153] close(4) = 0 [pid 5153] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5153] exit_group(0) = ? [pid 5153] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5153, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./40", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./40", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./40/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./40/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./40/binderfs") = 0 [ 59.911172][ T5153] loop0: detected capacity change from 0 to 512 [ 59.921488][ T5153] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 59.932763][ T5153] EXT4-fs (loop0): orphan cleanup on readonly fs [ 59.943583][ T5153] EXT4-fs (loop0): 1 truncate cleaned up umount2("./40/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./40/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./40/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./40/file0") = 0 getdents64(3, 0x555557255620 /* 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./strace-static-x86_64: Process 5155 attached , child_tidptr=0x5555572545d0) = 5155 [pid 5155] chdir("./41") = 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) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5155] munmap(0x7f9a8a8ad000, 262144) = 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", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [pid 5155] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=3 /* 0.03 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./41/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./41/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./41/binderfs") = 0 umount2("./41/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./41/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./41/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./41/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5157 ./strace-static-x86_64: Process 5157 attached [pid 5157] chdir("./42") = 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 [ 60.026870][ T5155] loop0: detected capacity change from 0 to 512 [ 60.036023][ T5155] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 60.046824][ T5155] EXT4-fs (loop0): orphan cleanup on readonly fs [ 60.056940][ T5155] EXT4-fs (loop0): 1 truncate cleaned up [pid 5157] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5157] munmap(0x7f9a8a8ad000, 262144) = 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", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./42", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 60.113187][ T5157] loop0: detected capacity change from 0 to 512 [ 60.114479][ T5072] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 60.130781][ T5157] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 60.141424][ T5157] EXT4-fs (loop0): orphan cleanup on readonly fs [ 60.153024][ T5157] EXT4-fs (loop0): 1 truncate cleaned up openat(AT_FDCWD, "./42", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./42/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./42/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./42/binderfs") = 0 umount2("./42/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./42/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./42/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./42/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5159 ./strace-static-x86_64: Process 5159 attached [pid 5159] chdir("./43") = 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 [pid 5159] memfd_create("syzkaller", 0) = 3 [pid 5159] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5159] munmap(0x7f9a8a8ad000, 262144) = 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", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [ 60.229934][ T5159] loop0: detected capacity change from 0 to 512 [ 60.240287][ T5159] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 60.250659][ T5159] EXT4-fs (loop0): orphan cleanup on readonly fs [ 60.261232][ T5159] EXT4-fs (loop0): 1 truncate cleaned up [pid 5159] close(4) = 0 [pid 5159] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=4 /* 0.04 s */} --- umount2("./43", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./43", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./43/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./43/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./43/binderfs") = 0 umount2("./43/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./43/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./43/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./43/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5161 ./strace-static-x86_64: Process 5161 attached [pid 5161] chdir("./44") = 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) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5161] munmap(0x7f9a8a8ad000, 262144) = 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", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [pid 5161] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5161] exit_group(0) = ? [ 60.373015][ T5161] loop0: detected capacity change from 0 to 512 [ 60.382537][ T5161] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 60.394090][ T5161] EXT4-fs (loop0): orphan cleanup on readonly fs [ 60.405034][ T5161] EXT4-fs (loop0): 1 truncate cleaned up [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=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./44", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./44", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./44/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./44/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./44/binderfs") = 0 umount2("./44/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./44/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./44/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./44/file0") = 0 getdents64(3, 0x555557255620 /* 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 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5163 attached [pid 5163] chdir("./45" [pid 5070] <... clone resumed>, child_tidptr=0x5555572545d0) = 5163 [pid 5163] <... chdir resumed>) = 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) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5163] munmap(0x7f9a8a8ad000, 262144) = 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", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [pid 5163] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=3 /* 0.03 s */} --- umount2("./45", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./45", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./45/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./45/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./45/binderfs") = 0 [ 60.511036][ T5163] loop0: detected capacity change from 0 to 512 [ 60.520922][ T5163] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 60.532185][ T5163] EXT4-fs (loop0): orphan cleanup on readonly fs [ 60.542904][ T5163] EXT4-fs (loop0): 1 truncate cleaned up umount2("./45/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./45/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./45/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./45/file0") = 0 getdents64(3, 0x555557255620 /* 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) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5165 attached , child_tidptr=0x5555572545d0) = 5165 [pid 5165] chdir("./46") = 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) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5165] munmap(0x7f9a8a8ad000, 262144) = 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", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 [ 60.636339][ T5165] loop0: detected capacity change from 0 to 512 [ 60.648191][ T5165] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 60.659230][ T5165] EXT4-fs (loop0): orphan cleanup on readonly fs [ 60.669824][ T5165] EXT4-fs (loop0): 1 truncate cleaned up umount2("./46", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./46", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./46/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./46/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./46/binderfs") = 0 umount2("./46/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./46/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./46/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./46/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./46/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./46/file0") = 0 getdents64(3, 0x555557255620 /* 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, child_tidptr=0x5555572545d0) = 5167 ./strace-static-x86_64: Process 5167 attached [pid 5167] chdir("./47") = 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 [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) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5167] munmap(0x7f9a8a8ad000, 262144) = 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", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [pid 5167] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./47", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./47", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./47/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./47/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./47/binderfs") = 0 umount2("./47/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./47/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./47/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 [ 60.760813][ T5167] loop0: detected capacity change from 0 to 512 [ 60.770432][ T5167] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 60.781937][ T5167] EXT4-fs (loop0): orphan cleanup on readonly fs [ 60.792127][ T5167] EXT4-fs (loop0): 1 truncate cleaned up getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./47/file0") = 0 getdents64(3, 0x555557255620 /* 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 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555572545d0) = 5169 ./strace-static-x86_64: Process 5169 attached [pid 5169] chdir("./48") = 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) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5169] munmap(0x7f9a8a8ad000, 262144) = 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", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [pid 5169] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=2 /* 0.02 s */} --- umount2("./48", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./48", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./48/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./48/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [ 60.878321][ T5169] loop0: detected capacity change from 0 to 512 [ 60.887625][ T5169] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 60.898239][ T5169] EXT4-fs (loop0): orphan cleanup on readonly fs [ 60.908029][ T5169] EXT4-fs (loop0): 1 truncate cleaned up unlink("./48/binderfs") = 0 umount2("./48/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./48/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./48/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./48/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5171 ./strace-static-x86_64: Process 5171 attached [pid 5171] chdir("./49") = 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) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5171] munmap(0x7f9a8a8ad000, 262144) = 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", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [pid 5171] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=5 /* 0.05 s */} --- umount2("./49", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./49", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./49/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./49/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./49/binderfs") = 0 umount2("./49/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./49/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./49/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [ 61.002199][ T5171] loop0: detected capacity change from 0 to 512 [ 61.013677][ T5171] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 61.024420][ T5171] EXT4-fs (loop0): orphan cleanup on readonly fs [ 61.035062][ T5171] EXT4-fs (loop0): 1 truncate cleaned up 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./49/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5173 ./strace-static-x86_64: Process 5173 attached [pid 5173] chdir("./50") = 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) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5173] munmap(0x7f9a8a8ad000, 262144) = 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", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [pid 5173] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./50", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./50", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./50/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./50/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./50/binderfs") = 0 umount2("./50/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./50/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./50/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 [ 61.110920][ T5173] loop0: detected capacity change from 0 to 512 [ 61.120896][ T5173] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 61.131958][ T5173] EXT4-fs (loop0): orphan cleanup on readonly fs [ 61.142046][ T5173] EXT4-fs (loop0): 1 truncate cleaned up close(4) = 0 rmdir("./50/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5175 ./strace-static-x86_64: Process 5175 attached [pid 5175] chdir("./51") = 0 [pid 5175] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5175] setpgid(0, 0) = 0 [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) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5175] munmap(0x7f9a8a8ad000, 262144) = 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", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [pid 5175] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=4 /* 0.04 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./51/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./51/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./51/binderfs") = 0 umount2("./51/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./51/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./51/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./51/file0") = 0 getdents64(3, 0x555557255620 /* 0 entries */, 32768) = 0 close(3) = 0 [ 61.220662][ T5175] loop0: detected capacity change from 0 to 512 [ 61.230484][ T5175] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 61.241809][ T5175] EXT4-fs (loop0): orphan cleanup on readonly fs [ 61.252876][ T5175] EXT4-fs (loop0): 1 truncate cleaned up 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=0x5555572545d0) = 5177 ./strace-static-x86_64: Process 5177 attached [pid 5177] chdir("./52") = 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) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5177] munmap(0x7f9a8a8ad000, 262144) = 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", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [pid 5177] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=2 /* 0.02 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 [ 61.326592][ T5177] loop0: detected capacity change from 0 to 512 [ 61.336743][ T5177] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 61.347784][ T5177] EXT4-fs (loop0): orphan cleanup on readonly fs [ 61.357866][ T5177] EXT4-fs (loop0): 1 truncate cleaned up fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./52/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./52/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./52/binderfs") = 0 umount2("./52/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./52/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./52/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./52/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5179 ./strace-static-x86_64: Process 5179 attached [pid 5179] chdir("./53") = 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) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5179] munmap(0x7f9a8a8ad000, 262144) = 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", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [pid 5179] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 [ 61.464118][ T5179] loop0: detected capacity change from 0 to 512 [ 61.475485][ T5179] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 61.486419][ T5179] EXT4-fs (loop0): orphan cleanup on readonly fs [ 61.497739][ T5179] EXT4-fs (loop0): 1 truncate cleaned up umount2("./53", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./53", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./53/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./53/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./53/binderfs") = 0 umount2("./53/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./53/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./53/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./53/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5181 ./strace-static-x86_64: Process 5181 attached [pid 5181] chdir("./54") = 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 [pid 5181] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5181] munmap(0x7f9a8a8ad000, 262144) = 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", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [ 61.578024][ T5181] loop0: detected capacity change from 0 to 512 [ 61.583551][ T5072] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 61.596290][ T5181] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 61.610934][ T5181] EXT4-fs (loop0): orphan cleanup on readonly fs [ 61.621621][ T5181] EXT4-fs (loop0): 1 truncate cleaned up [pid 5181] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=3 /* 0.03 s */} --- umount2("./54", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./54", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./54/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./54/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./54/binderfs") = 0 umount2("./54/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./54/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./54/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./54/file0") = 0 getdents64(3, 0x555557255620 /* 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) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555572545d0) = 5183 ./strace-static-x86_64: Process 5183 attached [pid 5183] chdir("./55") = 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 [pid 5183] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5183] munmap(0x7f9a8a8ad000, 262144) = 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 [ 61.698412][ T5183] loop0: detected capacity change from 0 to 512 [ 61.701118][ T5072] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 61.717632][ T5183] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 61.729108][ T5183] EXT4-fs (loop0): orphan cleanup on readonly fs [pid 5183] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [pid 5183] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=2 /* 0.02 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./55/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./55/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./55/binderfs") = 0 [ 61.747659][ T5183] EXT4-fs (loop0): 1 truncate cleaned up umount2("./55/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./55/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./55/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./55/file0") = 0 getdents64(3, 0x555557255620 /* 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./strace-static-x86_64: Process 5185 attached , child_tidptr=0x5555572545d0) = 5185 [pid 5185] chdir("./56") = 0 [pid 5185] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [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) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5185] munmap(0x7f9a8a8ad000, 262144) = 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 [ 61.822016][ T5185] loop0: detected capacity change from 0 to 512 [ 61.832554][ T5185] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 61.843338][ T5185] EXT4-fs (loop0): orphan cleanup on readonly fs [ 61.853461][ T5185] [ 61.855793][ T5185] ====================================================== [ 61.862797][ T5185] WARNING: possible circular locking dependency detected [ 61.869793][ T5185] 6.2.0-rc5-syzkaller-00221-gab072681eabe #0 Not tainted [ 61.876794][ T5185] ------------------------------------------------------ [ 61.883796][ T5185] syz-executor283/5185 is trying to acquire lock: [ 61.890193][ T5185] ffff888072a373e8 (&dquot->dq_lock){+.+.}-{3:3}, at: dquot_commit+0x58/0x4e0 [ 61.899076][ T5185] [ 61.899076][ T5185] but task is already holding lock: [ 61.906596][ T5185] ffff8880728ac8c0 (&ei->i_data_sem/2){++++}-{3:3}, at: ext4_truncate+0x9f4/0xea0 [ 61.915805][ T5185] [ 61.915805][ T5185] which lock already depends on the new lock. [ 61.915805][ T5185] [ 61.926205][ T5185] [ 61.926205][ T5185] the existing dependency chain (in reverse order) is: [ 61.935220][ T5185] [ 61.935220][ T5185] -> #2 (&ei->i_data_sem/2){++++}-{3:3}: [ 61.943023][ T5185] lock_acquire+0x182/0x3c0 [ 61.948033][ T5185] down_read+0x39/0x50 [ 61.952630][ T5185] ext4_map_blocks+0x398/0x1cc0 [ 61.957992][ T5185] ext4_getblk+0x1b9/0x770 [ 61.962953][ T5185] ext4_bread+0x2a/0x170 [ 61.967720][ T5185] ext4_quota_write+0x225/0x570 [ 61.973086][ T5185] get_free_dqblk+0x34a/0x6d0 [ 61.978271][ T5185] do_insert_tree+0x26b/0x1aa0 [ 61.983544][ T5185] do_insert_tree+0x722/0x1aa0 [ 61.988826][ T5185] do_insert_tree+0x722/0x1aa0 [ 61.994094][ T5185] do_insert_tree+0x722/0x1aa0 [ 61.999363][ T5185] qtree_write_dquot+0x3b6/0x530 [ 62.004826][ T5185] v2_write_dquot+0x11b/0x190 [ 62.010009][ T5185] dquot_acquire+0x348/0x670 [ 62.015102][ T5185] ext4_acquire_dquot+0x2dc/0x400 [ 62.020631][ T5185] dqget+0x999/0xdc0 [ 62.025028][ T5185] __dquot_initialize+0x3d0/0xcf0 [ 62.030570][ T5185] ext4_process_orphan+0x57/0x2d0 [ 62.036103][ T5185] ext4_orphan_cleanup+0xb60/0x1340 [ 62.041818][ T5185] ext4_fill_super+0x81cd/0x8700 [ 62.047269][ T5185] get_tree_bdev+0x400/0x620 [ 62.052370][ T5185] vfs_get_tree+0x88/0x270 [ 62.057292][ T5185] do_new_mount+0x289/0xad0 [ 62.062301][ T5185] __se_sys_mount+0x2d3/0x3c0 [ 62.067479][ T5185] do_syscall_64+0x3d/0xb0 [ 62.072409][ T5185] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 62.078828][ T5185] [ 62.078828][ T5185] -> #1 (&s->s_dquot.dqio_sem){++++}-{3:3}: [ 62.086896][ T5185] lock_acquire+0x182/0x3c0 [ 62.091908][ T5185] down_read+0x39/0x50 [ 62.096573][ T5185] v2_read_dquot+0x4a/0x100 [ 62.101588][ T5185] dquot_acquire+0x186/0x670 [ 62.106685][ T5185] ext4_acquire_dquot+0x2dc/0x400 [ 62.112225][ T5185] dqget+0x999/0xdc0 [ 62.116641][ T5185] __dquot_initialize+0x291/0xcf0 [ 62.122167][ T5185] ext4_process_orphan+0x57/0x2d0 [ 62.127694][ T5185] ext4_orphan_cleanup+0xb60/0x1340 [ 62.133416][ T5185] ext4_fill_super+0x81cd/0x8700 [ 62.138855][ T5185] get_tree_bdev+0x400/0x620 [ 62.143957][ T5185] vfs_get_tree+0x88/0x270 [ 62.149000][ T5185] do_new_mount+0x289/0xad0 [ 62.154016][ T5185] __se_sys_mount+0x2d3/0x3c0 [ 62.159194][ T5185] do_syscall_64+0x3d/0xb0 [ 62.164124][ T5185] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 62.170536][ T5185] [ 62.170536][ T5185] -> #0 (&dquot->dq_lock){+.+.}-{3:3}: [ 62.178170][ T5185] validate_chain+0x1898/0x6ae0 [ 62.183554][ T5185] __lock_acquire+0x1292/0x1f60 [ 62.188929][ T5185] lock_acquire+0x182/0x3c0 [ 62.193960][ T5185] __mutex_lock_common+0x1bd/0x26e0 [ 62.199674][ T5185] mutex_lock_nested+0x17/0x20 [ 62.204966][ T5185] dquot_commit+0x58/0x4e0 [ 62.209903][ T5185] ext4_write_dquot+0x1ea/0x2b0 [ 62.215260][ T5185] __dquot_free_space+0x9b8/0xfd0 [ 62.220790][ T5185] ext4_free_blocks+0x1c4a/0x2810 [ 62.226322][ T5185] ext4_ext_remove_space+0x1f5f/0x46a0 [ 62.232287][ T5185] ext4_ext_truncate+0x177/0x220 [ 62.237814][ T5185] ext4_truncate+0xa6a/0xea0 [ 62.242910][ T5185] ext4_process_orphan+0x1aa/0x2d0 [ 62.248549][ T5185] ext4_orphan_cleanup+0xb60/0x1340 [ 62.254427][ T5185] ext4_fill_super+0x81cd/0x8700 [ 62.259870][ T5185] get_tree_bdev+0x400/0x620 [ 62.264974][ T5185] vfs_get_tree+0x88/0x270 [ 62.269900][ T5185] do_new_mount+0x289/0xad0 [ 62.274909][ T5185] __se_sys_mount+0x2d3/0x3c0 [ 62.280088][ T5185] do_syscall_64+0x3d/0xb0 [ 62.285010][ T5185] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 62.291420][ T5185] [ 62.291420][ T5185] other info that might help us debug this: [ 62.291420][ T5185] [ 62.301643][ T5185] Chain exists of: [ 62.301643][ T5185] &dquot->dq_lock --> &s->s_dquot.dqio_sem --> &ei->i_data_sem/2 [ 62.301643][ T5185] [ 62.315277][ T5185] Possible unsafe locking scenario: [ 62.315277][ T5185] [ 62.322711][ T5185] CPU0 CPU1 [ 62.328069][ T5185] ---- ---- [ 62.333425][ T5185] lock(&ei->i_data_sem/2); [ 62.338002][ T5185] lock(&s->s_dquot.dqio_sem); [ 62.345352][ T5185] lock(&ei->i_data_sem/2); [ 62.352452][ T5185] lock(&dquot->dq_lock); [ 62.356882][ T5185] [ 62.356882][ T5185] *** DEADLOCK *** [ 62.356882][ T5185] [ 62.365010][ T5185] 4 locks held by syz-executor283/5185: [ 62.370536][ T5185] #0: ffff88807ea040e0 (&type->s_umount_key#28/1){+.+.}-{3:3}, at: alloc_super+0x212/0x920 [ 62.380620][ T5185] #1: ffff8880728aca38 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_process_orphan+0x164/0x2d0 [ 62.391607][ T5185] #2: ffff8880728ac8c0 (&ei->i_data_sem/2){++++}-{3:3}, at: ext4_truncate+0x9f4/0xea0 [ 62.401287][ T5185] #3: ffffffff8d46e888 (dquot_srcu){....}-{0:0}, at: rcu_lock_acquire+0x5/0x30 [ 62.410331][ T5185] [ 62.410331][ T5185] stack backtrace: [ 62.416215][ T5185] CPU: 0 PID: 5185 Comm: syz-executor283 Not tainted 6.2.0-rc5-syzkaller-00221-gab072681eabe #0 [ 62.426621][ T5185] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 62.436667][ T5185] Call Trace: [ 62.439942][ T5185] [ 62.442857][ T5185] dump_stack_lvl+0x1b1/0x290 [ 62.447551][ T5185] ? nf_tcp_handle_invalid+0x630/0x630 [ 62.453025][ T5185] ? print_circular_bug+0x13e/0x1c0 [ 62.458237][ T5185] check_noncircular+0x2cc/0x390 [ 62.463164][ T5185] ? add_chain_block+0x850/0x850 [ 62.468091][ T5185] ? lockdep_lock+0x102/0x290 [ 62.472759][ T5185] ? _find_first_zero_bit+0xe8/0x110 [ 62.478031][ T5185] validate_chain+0x1898/0x6ae0 [ 62.482892][ T5185] ? check_noncircular+0x1aa/0x390 [ 62.488091][ T5185] ? reacquire_held_locks+0x650/0x650 [ 62.493491][ T5185] ? add_chain_block+0x850/0x850 [ 62.498422][ T5185] ? lockdep_lock+0x102/0x290 [ 62.503090][ T5185] ? lockdep_unlock+0x144/0x2e0 [ 62.507928][ T5185] ? lockdep_lock+0x290/0x290 [ 62.512590][ T5185] ? reacquire_held_locks+0x650/0x650 [ 62.517946][ T5185] ? _find_first_zero_bit+0xe8/0x110 [ 62.523217][ T5185] ? validate_chain+0x177/0x6ae0 [ 62.528145][ T5185] ? hlock_conflict+0x54/0x1f0 [ 62.532902][ T5185] ? reacquire_held_locks+0x650/0x650 [ 62.538273][ T5185] ? __bfs+0x369/0x700 [ 62.542332][ T5185] ? check_path+0x40/0x40 [ 62.546650][ T5185] ? rcu_lock_release+0x5/0x20 [ 62.551409][ T5185] ? trace_lock_release+0x95/0x220 [ 62.556523][ T5185] ? reacquire_held_locks+0x650/0x650 [ 62.561887][ T5185] ? check_noncircular+0x1aa/0x390 [ 62.566996][ T5185] ? reacquire_held_locks+0x650/0x650 [ 62.572411][ T5185] ? lockdep_lock+0x102/0x290 [ 62.577095][ T5185] ? reacquire_held_locks+0x650/0x650 [ 62.582472][ T5185] ? lockdep_unlock+0x144/0x2e0 [ 62.587309][ T5185] ? _find_first_zero_bit+0xe8/0x110 [ 62.592582][ T5185] ? validate_chain+0x1478/0x6ae0 [ 62.597589][ T5185] ? reacquire_held_locks+0x650/0x650 [ 62.602953][ T5185] ? validate_chain+0x1478/0x6ae0 [ 62.607966][ T5185] ? check_noncircular+0x1aa/0x390 [ 62.613064][ T5185] ? add_chain_block+0x850/0x850 [ 62.617984][ T5185] ? lockdep_lock+0x102/0x290 [ 62.622649][ T5185] ? stack_trace_save+0x1e0/0x1e0 [ 62.627656][ T5185] ? rcu_read_lock_sched_held+0x87/0x110 [ 62.633276][ T5185] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 62.639262][ T5185] ? rcu_read_lock_sched_held+0x87/0x110 [ 62.644889][ T5185] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 62.650852][ T5185] ? finish_lock_switch+0x89/0x100 [ 62.655950][ T5185] ? trace_lock_release+0x95/0x220 [ 62.661045][ T5185] ? mark_lock+0x9a/0x350 [ 62.665363][ T5185] ? rcu_read_lock_sched_held+0x87/0x110 [ 62.670978][ T5185] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 62.676943][ T5185] ? mark_lock+0x9a/0x350 [ 62.681260][ T5185] ? __lock_acquire+0x1292/0x1f60 [ 62.686270][ T5185] ? rcu_preempt_deferred_qs_irqrestore+0x849/0xc10 [ 62.692842][ T5185] ? trace_lock_release+0x95/0x220 [ 62.697953][ T5185] ? mark_lock+0x9a/0x350 [ 62.702300][ T5185] ? lockdep_hardirqs_on_prepare+0x428/0x790 [ 62.708278][ T5185] ? mark_lock+0x9a/0x350 [ 62.712690][ T5185] ? mark_lock+0x9a/0x350 [ 62.717019][ T5185] ? rcu_read_lock_sched_held+0x87/0x110 [ 62.722635][ T5185] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 62.728611][ T5185] ? mark_lock+0x9a/0x350 [ 62.732947][ T5185] ? lockdep_hardirqs_on_prepare+0x428/0x790 [ 62.738916][ T5185] ? print_irqtrace_events+0x220/0x220 [ 62.744367][ T5185] ? __free_object+0x1fb/0xa60 [ 62.749134][ T5185] ? lockdep_hardirqs_on+0x8d/0x130 [ 62.754319][ T5185] ? mark_lock+0x9a/0x350 [ 62.758649][ T5185] ? mark_lock+0x9a/0x350 [ 62.762975][ T5185] ? mark_lock+0x9a/0x350 [ 62.767287][ T5185] __lock_acquire+0x1292/0x1f60 [ 62.772132][ T5185] lock_acquire+0x182/0x3c0 [ 62.776622][ T5185] ? dquot_commit+0x58/0x4e0 [ 62.781201][ T5185] ? read_lock_is_recursive+0x10/0x10 [ 62.786556][ T5185] ? print_irqtrace_events+0x220/0x220 [ 62.792002][ T5185] ? __might_sleep+0xc0/0xc0 [ 62.796587][ T5185] ? do_raw_spin_unlock+0x134/0x8a0 [ 62.801778][ T5185] ? _raw_spin_unlock_irqrestore+0x8b/0x120 [ 62.807678][ T5185] __mutex_lock_common+0x1bd/0x26e0 [ 62.812872][ T5185] ? dquot_commit+0x58/0x4e0 [ 62.817466][ T5185] ? dquot_commit+0x58/0x4e0 [ 62.822047][ T5185] ? __might_sleep+0xc0/0xc0 [ 62.826629][ T5185] ? mutex_lock_io_nested+0x60/0x60 [ 62.831827][ T5185] ? rcu_read_lock_sched_held+0x87/0x110 [ 62.837463][ T5185] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 62.843452][ T5185] ? read_lock_is_recursive+0x10/0x10 [ 62.848830][ T5185] mutex_lock_nested+0x17/0x20 [ 62.853584][ T5185] dquot_commit+0x58/0x4e0 [ 62.858120][ T5185] ? __ext4_journal_start_sb+0x19b/0x1f0 [ 62.863761][ T5185] ext4_write_dquot+0x1ea/0x2b0 [ 62.868600][ T5185] __dquot_free_space+0x9b8/0xfd0 [ 62.873614][ T5185] ? dquot_reclaim_space_nodirty+0x800/0x800 [ 62.879581][ T5185] ? ext4_block_bitmap_csum_set+0x1c3/0x4f0 [ 62.885462][ T5185] ? lock_downgrade+0xe0/0x8d0 [ 62.890263][ T5185] ext4_free_blocks+0x1c4a/0x2810 [ 62.895278][ T5185] ? __lock_acquire+0x1f60/0x1f60 [ 62.900294][ T5185] ? trace_ext4_allocate_blocks+0x2f0/0x2f0 [ 62.906179][ T5185] ? rcu_read_lock_sched_held+0x87/0x110 [ 62.911795][ T5185] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 62.917764][ T5185] ? __ext4_journal_ensure_credits+0x2c/0x460 [ 62.923822][ T5185] ? ext4_inode_journal_mode+0x185/0x460 [ 62.929443][ T5185] ? trace_ext4_remove_blocks+0x10b/0x330 [ 62.935178][ T5185] ext4_ext_remove_space+0x1f5f/0x46a0 [ 62.940654][ T5185] ? ext4_da_release_space+0x1de/0x370 [ 62.946107][ T5185] ? ext4_ext_index_trans_blocks+0x120/0x120 [ 62.952103][ T5185] ? ext4_es_remove_extent+0x1ab/0x260 [ 62.957549][ T5185] ? trace_ext4_es_lookup_extent_exit+0x300/0x300 [ 62.963949][ T5185] ? down_write+0x1a5/0x270 [ 62.968439][ T5185] ? trace_ext4_fc_stats+0x2f0/0x2f0 [ 62.973710][ T5185] ? down_read_killable+0x80/0x80 [ 62.978723][ T5185] ext4_ext_truncate+0x177/0x220 [ 62.983654][ T5185] ext4_truncate+0xa6a/0xea0 [ 62.988240][ T5185] ? __ext4_mark_inode_dirty+0x670/0x670 [ 62.993870][ T5185] ext4_process_orphan+0x1aa/0x2d0 [ 62.998977][ T5185] ext4_orphan_cleanup+0xb60/0x1340 [ 63.004161][ T5185] ? ext4_orphan_del+0xc20/0xc20 [ 63.009080][ T5185] ? __init_swait_queue_head+0xa6/0x140 [ 63.014628][ T5185] ? errseq_check_and_advance+0x5e/0x110 [ 63.020249][ T5185] ext4_fill_super+0x81cd/0x8700 [ 63.025180][ T5185] ? ext4_parse_test_dummy_encryption+0xb0/0xb0 [ 63.031428][ T5185] ? snprintf+0xc0/0x110 [ 63.035657][ T5185] ? set_blocksize+0x1ec/0x390 [ 63.040417][ T5185] ? sb_set_blocksize+0x95/0xf0 [ 63.045249][ T5185] get_tree_bdev+0x400/0x620 [ 63.049832][ T5185] ? ext4_parse_test_dummy_encryption+0xb0/0xb0 [ 63.056081][ T5185] vfs_get_tree+0x88/0x270 [ 63.060502][ T5185] do_new_mount+0x289/0xad0 [ 63.064993][ T5185] ? do_move_mount_old+0x150/0x150 [ 63.070092][ T5185] ? user_path_at_empty+0x149/0x1a0 [ 63.075279][ T5185] __se_sys_mount+0x2d3/0x3c0 [ 63.079950][ T5185] ? __x64_sys_mount+0xc0/0xc0 [ 63.084695][ T5185] ? syscall_enter_from_user_mode+0x2e/0x1d0 [ 63.090661][ T5185] ? __x64_sys_mount+0x1c/0xc0 [ 63.095424][ T5185] do_syscall_64+0x3d/0xb0 [ 63.099823][ T5185] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 63.105716][ T5185] RIP: 0033:0x7f9a92cfbe7a [ 63.110112][ T5185] Code: 48 c7 c2 c0 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 a8 00 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 63.129699][ T5185] RSP: 002b:00007ffc842e01b8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 63.138095][ T5185] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f9a92cfbe7a [ 63.146049][ T5185] RDX: 00000000200004c0 RSI: 00000000200000c0 RDI: 00007ffc842e01c0 [ 63.154005][ T5185] RBP: 00007ffc842e01c0 R08: 00007ffc842e0200 R09: 00000000000004bb [ 63.161959][ T5185] R10: 0000000000000007 R11: 0000000000000206 R12: 0000000000000004 [pid 5185] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [pid 5185] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./56", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./56", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./56/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./56/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./56/binderfs") = 0 umount2("./56/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./56/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./56/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./56/file0") = 0 getdents64(3, 0x555557255620 /* 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 [ 63.169919][ T5185] R13: 00005555572542c0 R14: 00007ffc842e0200 R15: 0000000000000000 [ 63.177888][ T5185] [ 63.185283][ T5185] EXT4-fs (loop0): 1 truncate cleaned up clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555572545d0) = 5187 ./strace-static-x86_64: Process 5187 attached [pid 5187] chdir("./57") = 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) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5187] munmap(0x7f9a8a8ad000, 262144) = 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", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [ 63.248247][ T5187] loop0: detected capacity change from 0 to 512 [ 63.260237][ T5187] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 63.277160][ T5187] EXT4-fs (loop0): orphan cleanup on readonly fs [ 63.287565][ T5187] EXT4-fs (loop0): 1 truncate cleaned up [pid 5187] close(4) = 0 [pid 5187] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=2 /* 0.02 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./57/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./57/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./57/binderfs") = 0 umount2("./57/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./57/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./57/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./57/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5189 ./strace-static-x86_64: Process 5189 attached [pid 5189] chdir("./58") = 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) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5189] munmap(0x7f9a8a8ad000, 262144) = 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", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [pid 5189] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=2 /* 0.02 s */} --- umount2("./58", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./58", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./58/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./58/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./58/binderfs") = 0 umount2("./58/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./58/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./58/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./58/file0") = 0 [ 63.380953][ T5189] loop0: detected capacity change from 0 to 512 [ 63.389158][ T5189] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 63.399554][ T5189] EXT4-fs (loop0): orphan cleanup on readonly fs [ 63.407979][ T5189] EXT4-fs (loop0): 1 truncate cleaned up getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5191 ./strace-static-x86_64: Process 5191 attached [pid 5191] chdir("./59") = 0 [pid 5191] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5191] setpgid(0, 0) = 0 [pid 5191] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5191] write(3, "1000", 4) = 4 [pid 5191] close(3) = 0 [pid 5191] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5191] memfd_create("syzkaller", 0) = 3 [pid 5191] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5191] munmap(0x7f9a8a8ad000, 262144) = 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", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [pid 5191] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=2 /* 0.02 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./59/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./59/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./59/binderfs") = 0 umount2("./59/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./59/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./59/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 [ 63.479421][ T5191] loop0: detected capacity change from 0 to 512 [ 63.488015][ T5191] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 63.498144][ T5191] EXT4-fs (loop0): orphan cleanup on readonly fs [ 63.507824][ T5191] EXT4-fs (loop0): 1 truncate cleaned up close(4) = 0 rmdir("./59/file0") = 0 getdents64(3, 0x555557255620 /* 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) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555572545d0) = 5193 ./strace-static-x86_64: Process 5193 attached [pid 5193] chdir("./60") = 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) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5193] munmap(0x7f9a8a8ad000, 262144) = 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", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [pid 5193] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=1 /* 0.01 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./60/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./60/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./60/binderfs") = 0 umount2("./60/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./60/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./60/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./60/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5195 ./strace-static-x86_64: Process 5195 attached [pid 5195] chdir("./61") = 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) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5195] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5195] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 63.579200][ T5193] loop0: detected capacity change from 0 to 512 [ 63.587900][ T5193] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 63.598333][ T5193] EXT4-fs (loop0): orphan cleanup on readonly fs [ 63.606923][ T5193] EXT4-fs (loop0): 1 truncate cleaned up [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", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [pid 5195] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./61", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./61", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./61/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./61/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./61/binderfs") = 0 [ 63.646676][ T5195] loop0: detected capacity change from 0 to 512 [ 63.654865][ T5195] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 63.664620][ T5195] EXT4-fs (loop0): orphan cleanup on readonly fs [ 63.673904][ T5195] EXT4-fs (loop0): 1 truncate cleaned up umount2("./61/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./61/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./61/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./61/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5197 ./strace-static-x86_64: Process 5197 attached [pid 5197] chdir("./62") = 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 [pid 5197] memfd_create("syzkaller", 0) = 3 [pid 5197] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5197] munmap(0x7f9a8a8ad000, 262144) = 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", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [pid 5197] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=3 /* 0.03 s */} --- umount2("./62", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./62", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./62/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./62/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./62/binderfs") = 0 umount2("./62/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./62/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./62/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./62/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5199 ./strace-static-x86_64: Process 5199 attached [pid 5199] chdir("./63") = 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 [ 63.752695][ T5197] loop0: detected capacity change from 0 to 512 [ 63.761265][ T5197] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 63.771288][ T5197] EXT4-fs (loop0): orphan cleanup on readonly fs [ 63.779612][ T5197] EXT4-fs (loop0): 1 truncate cleaned up [pid 5199] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5199] munmap(0x7f9a8a8ad000, 262144) = 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", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [pid 5199] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=3 /* 0.03 s */} --- umount2("./63", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./63", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./63/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./63/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./63/binderfs") = 0 umount2("./63/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./63/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./63/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./63/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5201 [ 63.838453][ T5199] loop0: detected capacity change from 0 to 512 [ 63.846743][ T5199] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 63.856673][ T5199] EXT4-fs (loop0): orphan cleanup on readonly fs [ 63.866196][ T5199] EXT4-fs (loop0): 1 truncate cleaned up ./strace-static-x86_64: Process 5201 attached [pid 5201] chdir("./64") = 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) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5201] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5201] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [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", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [pid 5201] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=1 /* 0.01 s */} --- umount2("./64", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./64", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./64/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./64/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./64/binderfs") = 0 umount2("./64/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./64/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./64/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./64/file0") = 0 getdents64(3, 0x555557255620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./64") = 0 mkdir("./65", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555572545d0) = 5203 ./strace-static-x86_64: Process 5203 attached [pid 5203] chdir("./65") = 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 [ 63.928603][ T5201] loop0: detected capacity change from 0 to 512 [ 63.937450][ T5201] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 63.947599][ T5201] EXT4-fs (loop0): orphan cleanup on readonly fs [ 63.956255][ T5201] EXT4-fs (loop0): 1 truncate cleaned up [pid 5203] memfd_create("syzkaller", 0) = 3 [pid 5203] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5203] munmap(0x7f9a8a8ad000, 262144) = 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", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [pid 5203] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=3 /* 0.03 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./65/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./65/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./65/binderfs") = 0 umount2("./65/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./65/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./65/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./65/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5205 ./strace-static-x86_64: Process 5205 attached [pid 5205] chdir("./66") = 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) = 0x7f9a8a8ad000 [ 64.014631][ T5203] loop0: detected capacity change from 0 to 512 [ 64.022990][ T5203] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 64.033304][ T5203] EXT4-fs (loop0): orphan cleanup on readonly fs [ 64.042378][ T5203] EXT4-fs (loop0): 1 truncate cleaned up [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"..., 262144) = 262144 [pid 5205] munmap(0x7f9a8a8ad000, 262144) = 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", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [ 64.098934][ T5205] loop0: detected capacity change from 0 to 512 [ 64.107713][ T5205] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 64.117865][ T5205] EXT4-fs (loop0): orphan cleanup on readonly fs [ 64.126639][ T5205] EXT4-fs (loop0): 1 truncate cleaned up [pid 5205] close(4) = 0 [pid 5205] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=2 /* 0.02 s */} --- umount2("./66", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./66", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./66/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./66/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./66/binderfs") = 0 umount2("./66/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./66/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./66/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./66/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5207 ./strace-static-x86_64: Process 5207 attached [pid 5207] chdir("./67") = 0 [pid 5207] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5207] setpgid(0, 0) = 0 [pid 5207] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5207] write(3, "1000", 4) = 4 [pid 5207] close(3) = 0 [pid 5207] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5207] memfd_create("syzkaller", 0) = 3 [pid 5207] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5207] munmap(0x7f9a8a8ad000, 262144) = 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", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [pid 5207] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=4 /* 0.04 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./67/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./67/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./67/binderfs") = 0 umount2("./67/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./67/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./67/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./67/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 64.229868][ T5207] loop0: detected capacity change from 0 to 512 [ 64.240313][ T5207] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 64.250527][ T5207] EXT4-fs (loop0): orphan cleanup on readonly fs [ 64.259690][ T5207] EXT4-fs (loop0): 1 truncate cleaned up openat(AT_FDCWD, "./67/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./67/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5209 ./strace-static-x86_64: Process 5209 attached [pid 5209] chdir("./68") = 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) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5209] munmap(0x7f9a8a8ad000, 262144) = 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", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [pid 5209] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=4 /* 0.04 s */} --- umount2("./68", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./68", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./68/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./68/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./68/binderfs") = 0 umount2("./68/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./68/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./68/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./68/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 64.334232][ T5209] loop0: detected capacity change from 0 to 512 [ 64.344206][ T5209] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 64.354591][ T5209] EXT4-fs (loop0): orphan cleanup on readonly fs [ 64.363502][ T5209] EXT4-fs (loop0): 1 truncate cleaned up openat(AT_FDCWD, "./68/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./68/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5211 ./strace-static-x86_64: Process 5211 attached [pid 5211] chdir("./69") = 0 [pid 5211] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5211] setpgid(0, 0) = 0 [pid 5211] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5211] write(3, "1000", 4) = 4 [pid 5211] close(3) = 0 [pid 5211] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5211] memfd_create("syzkaller", 0) = 3 [pid 5211] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5211] munmap(0x7f9a8a8ad000, 262144) = 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 [pid 5211] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./69", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./69", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./69/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./69/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./69/binderfs") = 0 umount2("./69/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [ 64.436868][ T5211] loop0: detected capacity change from 0 to 512 [ 64.446568][ T5211] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 64.456687][ T5211] EXT4-fs (loop0): orphan cleanup on readonly fs [ 64.465223][ T5211] EXT4-fs (loop0): 1 truncate cleaned up umount2("./69/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./69/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./69/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5213 ./strace-static-x86_64: Process 5213 attached [pid 5213] chdir("./70") = 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) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5213] munmap(0x7f9a8a8ad000, 262144) = 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", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [pid 5213] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=3 /* 0.03 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./70/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./70/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./70/binderfs") = 0 umount2("./70/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./70/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./70/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [ 64.538683][ T5213] loop0: detected capacity change from 0 to 512 [ 64.548276][ T5213] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 64.558370][ T5213] EXT4-fs (loop0): orphan cleanup on readonly fs [ 64.567234][ T5213] EXT4-fs (loop0): 1 truncate cleaned up 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./70/file0") = 0 getdents64(3, 0x555557255620 /* 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 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5215 attached , child_tidptr=0x5555572545d0) = 5215 [pid 5215] chdir("./71") = 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 [pid 5215] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5215] munmap(0x7f9a8a8ad000, 262144) = 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", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [pid 5215] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=3 /* 0.03 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./71/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./71/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./71/binderfs") = 0 umount2("./71/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [ 64.642254][ T5215] loop0: detected capacity change from 0 to 512 [ 64.651295][ T5215] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 64.661238][ T5215] EXT4-fs (loop0): orphan cleanup on readonly fs [ 64.669929][ T5215] EXT4-fs (loop0): 1 truncate cleaned up umount2("./71/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./71/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./71/file0") = 0 getdents64(3, 0x555557255620 /* 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./strace-static-x86_64: Process 5217 attached , child_tidptr=0x5555572545d0) = 5217 [pid 5217] chdir("./72") = 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) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5217] munmap(0x7f9a8a8ad000, 262144) = 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", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [pid 5217] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=5 /* 0.05 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./72/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./72/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./72/binderfs") = 0 umount2("./72/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./72/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./72/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 [ 64.753359][ T5217] loop0: detected capacity change from 0 to 512 [ 64.761825][ T5217] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 64.772583][ T5217] EXT4-fs (loop0): orphan cleanup on readonly fs [ 64.781429][ T5217] EXT4-fs (loop0): 1 truncate cleaned up rmdir("./72/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5219 ./strace-static-x86_64: Process 5219 attached [pid 5219] chdir("./73") = 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) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5219] munmap(0x7f9a8a8ad000, 262144) = 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", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [pid 5219] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=4 /* 0.04 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./73/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./73/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./73/binderfs") = 0 umount2("./73/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./73/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./73/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./73/file0") = 0 getdents64(3, 0x555557255620 /* 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./strace-static-x86_64: Process 5222 attached , child_tidptr=0x5555572545d0) = 5222 [ 64.853375][ T5219] loop0: detected capacity change from 0 to 512 [ 64.862827][ T5219] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 64.872610][ T5219] EXT4-fs (loop0): orphan cleanup on readonly fs [ 64.881326][ T5219] EXT4-fs (loop0): 1 truncate cleaned up [pid 5222] chdir("./74") = 0 [pid 5222] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5222] setpgid(0, 0) = 0 [pid 5222] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5222] write(3, "1000", 4) = 4 [pid 5222] close(3) = 0 [pid 5222] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5222] memfd_create("syzkaller", 0) = 3 [pid 5222] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5222] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5222] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5222] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5222] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5222] close(3) = 0 [pid 5222] mkdir("./file0", 0777) = 0 [pid 5222] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5222] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5222] chdir("./file0") = 0 [pid 5222] ioctl(4, LOOP_CLR_FD) = 0 [pid 5222] close(4) = 0 [pid 5222] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5222] exit_group(0) = ? [pid 5222] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5222, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./74/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./74/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./74/binderfs") = 0 umount2("./74/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./74/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./74/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./74/file0") = 0 getdents64(3, 0x555557255620 /* 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 [ 64.944418][ T5222] loop0: detected capacity change from 0 to 512 [ 64.953439][ T5222] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 64.963889][ T5222] EXT4-fs (loop0): orphan cleanup on readonly fs [ 64.972393][ T5222] EXT4-fs (loop0): 1 truncate cleaned up clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5224 attached [pid 5224] chdir("./75") = 0 [pid 5224] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5224] setpgid(0, 0) = 0 [pid 5224] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5224] write(3, "1000", 4) = 4 [pid 5224] close(3) = 0 [pid 5224] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5224] memfd_create("syzkaller", 0) = 3 [pid 5224] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5070] <... clone resumed>, child_tidptr=0x5555572545d0) = 5224 [pid 5224] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5224] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5224] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5224] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5224] close(3) = 0 [pid 5224] mkdir("./file0", 0777) = 0 [pid 5224] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5224] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5224] chdir("./file0") = 0 [pid 5224] ioctl(4, LOOP_CLR_FD) = 0 [pid 5224] close(4) = 0 [pid 5224] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5224] exit_group(0) = ? [pid 5224] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5224, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- umount2("./75", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./75", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./75/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./75/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./75/binderfs") = 0 umount2("./75/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [ 65.035455][ T5224] loop0: detected capacity change from 0 to 512 [ 65.044604][ T5224] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 65.055069][ T5224] EXT4-fs (loop0): orphan cleanup on readonly fs [ 65.063806][ T5224] EXT4-fs (loop0): 1 truncate cleaned up umount2("./75/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./75/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./75/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5226 ./strace-static-x86_64: Process 5226 attached [pid 5226] chdir("./76") = 0 [pid 5226] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5226] setpgid(0, 0) = 0 [pid 5226] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5226] write(3, "1000", 4) = 4 [pid 5226] close(3) = 0 [pid 5226] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5226] memfd_create("syzkaller", 0) = 3 [pid 5226] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5226] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5226] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5226] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5226] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5226] close(3) = 0 [pid 5226] mkdir("./file0", 0777) = 0 [pid 5226] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5226] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5226] chdir("./file0") = 0 [pid 5226] ioctl(4, LOOP_CLR_FD) = 0 [pid 5226] close(4) = 0 [pid 5226] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5226] exit_group(0) = ? [pid 5226] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5226, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- umount2("./76", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./76", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./76/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./76/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./76/binderfs") = 0 umount2("./76/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./76/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./76/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 [ 65.136203][ T5226] loop0: detected capacity change from 0 to 512 [ 65.144797][ T5226] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 65.154817][ T5226] EXT4-fs (loop0): orphan cleanup on readonly fs [ 65.164306][ T5226] EXT4-fs (loop0): 1 truncate cleaned up close(4) = 0 rmdir("./76/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5228 ./strace-static-x86_64: Process 5228 attached [pid 5228] chdir("./77") = 0 [pid 5228] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5228] setpgid(0, 0) = 0 [pid 5228] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5228] write(3, "1000", 4) = 4 [pid 5228] close(3) = 0 [pid 5228] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5228] memfd_create("syzkaller", 0) = 3 [pid 5228] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5228] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5228] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5228] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5228] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5228] close(3) = 0 [pid 5228] mkdir("./file0", 0777) = 0 [pid 5228] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5228] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5228] chdir("./file0") = 0 [pid 5228] ioctl(4, LOOP_CLR_FD) = 0 [pid 5228] close(4) = 0 [pid 5228] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5228] exit_group(0) = ? [pid 5228] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5228, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./77/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./77/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./77/binderfs") = 0 umount2("./77/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./77/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./77/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./77/file0") = 0 getdents64(3, 0x555557255620 /* 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) [ 65.238483][ T5228] loop0: detected capacity change from 0 to 512 [ 65.248038][ T5228] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 65.257990][ T5228] EXT4-fs (loop0): orphan cleanup on readonly fs [ 65.266297][ T5228] EXT4-fs (loop0): 1 truncate cleaned up close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555572545d0) = 5230 ./strace-static-x86_64: Process 5230 attached [pid 5230] chdir("./78") = 0 [pid 5230] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5230] setpgid(0, 0) = 0 [pid 5230] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5230] write(3, "1000", 4) = 4 [pid 5230] close(3) = 0 [pid 5230] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5230] memfd_create("syzkaller", 0) = 3 [pid 5230] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5230] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5230] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5230] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5230] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5230] close(3) = 0 [pid 5230] mkdir("./file0", 0777) = 0 [pid 5230] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5230] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5230] chdir("./file0") = 0 [pid 5230] ioctl(4, LOOP_CLR_FD) = 0 [pid 5230] close(4) = 0 [pid 5230] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5230] exit_group(0) = ? [pid 5230] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5230, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./78", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./78", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./78/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./78/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./78/binderfs") = 0 umount2("./78/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./78/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./78/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./78/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5232 ./strace-static-x86_64: Process 5232 attached [pid 5232] chdir("./79") = 0 [pid 5232] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5232] setpgid(0, 0) = 0 [pid 5232] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [ 65.335671][ T5230] loop0: detected capacity change from 0 to 512 [ 65.343901][ T5230] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 65.353573][ T5230] EXT4-fs (loop0): orphan cleanup on readonly fs [ 65.362792][ T5230] EXT4-fs (loop0): 1 truncate cleaned up [pid 5232] write(3, "1000", 4) = 4 [pid 5232] close(3) = 0 [pid 5232] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5232] memfd_create("syzkaller", 0) = 3 [pid 5232] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5232] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5232] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5232] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5232] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5232] close(3) = 0 [pid 5232] mkdir("./file0", 0777) = 0 [pid 5232] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5232] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5232] chdir("./file0") = 0 [pid 5232] ioctl(4, LOOP_CLR_FD) = 0 [pid 5232] close(4) = 0 [pid 5232] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5232] exit_group(0) = ? [pid 5232] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5232, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./79", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./79", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./79/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./79/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./79/binderfs") = 0 umount2("./79/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./79/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./79/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 [ 65.421658][ T5232] loop0: detected capacity change from 0 to 512 [ 65.431134][ T5232] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 65.441487][ T5232] EXT4-fs (loop0): orphan cleanup on readonly fs [ 65.449952][ T5232] EXT4-fs (loop0): 1 truncate cleaned up rmdir("./79/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5234 ./strace-static-x86_64: Process 5234 attached [pid 5234] chdir("./80") = 0 [pid 5234] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5234] setpgid(0, 0) = 0 [pid 5234] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5234] write(3, "1000", 4) = 4 [pid 5234] close(3) = 0 [pid 5234] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5234] memfd_create("syzkaller", 0) = 3 [pid 5234] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5234] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5234] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5234] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5234] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5234] close(3) = 0 [pid 5234] mkdir("./file0", 0777) = 0 [pid 5234] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5234] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5234] chdir("./file0") = 0 [pid 5234] ioctl(4, LOOP_CLR_FD) = 0 [pid 5234] close(4) = 0 [pid 5234] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5234] exit_group(0) = ? [pid 5234] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5234, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./80", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./80", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./80/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./80/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./80/binderfs") = 0 umount2("./80/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./80/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./80/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./80/file0") = 0 getdents64(3, 0x555557255620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./80") = 0 [ 65.521595][ T5234] loop0: detected capacity change from 0 to 512 [ 65.530698][ T5234] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 65.540683][ T5234] EXT4-fs (loop0): orphan cleanup on readonly fs [ 65.549155][ T5234] EXT4-fs (loop0): 1 truncate cleaned up mkdir("./81", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555572545d0) = 5236 ./strace-static-x86_64: Process 5236 attached [pid 5236] chdir("./81") = 0 [pid 5236] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5236] setpgid(0, 0) = 0 [pid 5236] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5236] write(3, "1000", 4) = 4 [pid 5236] close(3) = 0 [pid 5236] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5236] memfd_create("syzkaller", 0) = 3 [pid 5236] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5236] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5236] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5236] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5236] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5236] close(3) = 0 [pid 5236] mkdir("./file0", 0777) = 0 [pid 5236] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5236] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5236] chdir("./file0") = 0 [pid 5236] ioctl(4, LOOP_CLR_FD) = 0 [pid 5236] close(4) = 0 [pid 5236] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5236] exit_group(0) = ? [pid 5236] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5236, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./81", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./81", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./81/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./81/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./81/binderfs") = 0 umount2("./81/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./81/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./81/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./81/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5238 ./strace-static-x86_64: Process 5238 attached [pid 5238] chdir("./82") = 0 [pid 5238] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5238] setpgid(0, 0) = 0 [pid 5238] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5238] write(3, "1000", 4) = 4 [pid 5238] close(3) = 0 [pid 5238] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5238] memfd_create("syzkaller", 0) = 3 [pid 5238] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5238] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5238] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5238] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 65.616396][ T5236] loop0: detected capacity change from 0 to 512 [ 65.624397][ T5236] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 65.634377][ T5236] EXT4-fs (loop0): orphan cleanup on readonly fs [ 65.642721][ T5236] EXT4-fs (loop0): 1 truncate cleaned up [pid 5238] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5238] close(3) = 0 [pid 5238] mkdir("./file0", 0777) = 0 [pid 5238] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5238] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5238] chdir("./file0") = 0 [pid 5238] ioctl(4, LOOP_CLR_FD) = 0 [pid 5238] close(4) = 0 [pid 5238] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5238] exit_group(0) = ? [pid 5238] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5238, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./82", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./82", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./82/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./82/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./82/binderfs") = 0 umount2("./82/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./82/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./82/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./82/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5240 ./strace-static-x86_64: Process 5240 attached [pid 5240] chdir("./83") = 0 [pid 5240] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5240] setpgid(0, 0) = 0 [pid 5240] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5240] write(3, "1000", 4) = 4 [pid 5240] close(3) = 0 [pid 5240] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5240] memfd_create("syzkaller", 0) = 3 [pid 5240] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5240] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5240] munmap(0x7f9a8a8ad000, 262144) = 0 [ 65.686762][ T5238] loop0: detected capacity change from 0 to 512 [ 65.691340][ T5072] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 65.703687][ T5238] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 65.713626][ T5238] EXT4-fs (loop0): orphan cleanup on readonly fs [ 65.722729][ T5238] EXT4-fs (loop0): 1 truncate cleaned up [pid 5240] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5240] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5240] close(3) = 0 [pid 5240] mkdir("./file0", 0777) = 0 [pid 5240] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5240] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5240] chdir("./file0") = 0 [pid 5240] ioctl(4, LOOP_CLR_FD) = 0 [pid 5240] close(4) = 0 [pid 5240] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5240] exit_group(0) = ? [pid 5240] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5240, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./83", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./83", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./83/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./83/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./83/binderfs") = 0 umount2("./83/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./83/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./83/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./83/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5242 ./strace-static-x86_64: Process 5242 attached [pid 5242] chdir("./84") = 0 [pid 5242] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5242] setpgid(0, 0) = 0 [pid 5242] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5242] write(3, "1000", 4) = 4 [pid 5242] close(3) = 0 [pid 5242] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5242] memfd_create("syzkaller", 0) = 3 [pid 5242] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [ 65.768518][ T5240] loop0: detected capacity change from 0 to 512 [ 65.778275][ T5240] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 65.788172][ T5240] EXT4-fs (loop0): orphan cleanup on readonly fs [ 65.797765][ T5240] EXT4-fs (loop0): 1 truncate cleaned up [pid 5242] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5242] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5242] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5242] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5242] close(3) = 0 [pid 5242] mkdir("./file0", 0777) = 0 [pid 5242] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5242] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5242] chdir("./file0") = 0 [pid 5242] ioctl(4, LOOP_CLR_FD) = 0 [pid 5242] close(4) = 0 [pid 5242] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5242] exit_group(0) = ? [pid 5242] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5242, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- umount2("./84", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 65.828284][ T5242] loop0: detected capacity change from 0 to 512 [ 65.832869][ T5072] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 65.845476][ T5242] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 65.855923][ T5242] EXT4-fs (loop0): orphan cleanup on readonly fs [ 65.864259][ T5242] EXT4-fs (loop0): 1 truncate cleaned up openat(AT_FDCWD, "./84", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./84/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./84/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./84/binderfs") = 0 umount2("./84/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./84/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./84/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./84/file0") = 0 getdents64(3, 0x555557255620 /* 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./strace-static-x86_64: Process 5244 attached [pid 5244] chdir("./85") = 0 [pid 5244] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5244] setpgid(0, 0) = 0 [pid 5244] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5244] write(3, "1000", 4) = 4 [pid 5244] close(3) = 0 [pid 5244] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5070] <... clone resumed>, child_tidptr=0x5555572545d0) = 5244 [pid 5244] memfd_create("syzkaller", 0) = 3 [pid 5244] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5244] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5244] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5244] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5244] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5244] close(3) = 0 [pid 5244] mkdir("./file0", 0777) = 0 [pid 5244] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5244] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5244] chdir("./file0") = 0 [pid 5244] ioctl(4, LOOP_CLR_FD) = 0 [pid 5244] close(4) = 0 [pid 5244] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5244] exit_group(0) = ? [pid 5244] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5244, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./85/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./85/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./85/binderfs") = 0 umount2("./85/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./85/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./85/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./85/file0") = 0 getdents64(3, 0x555557255620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./85") = 0 mkdir("./86", 0777) = 0 [ 65.940248][ T5244] loop0: detected capacity change from 0 to 512 [ 65.949165][ T5244] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 65.959157][ T5244] EXT4-fs (loop0): orphan cleanup on readonly fs [ 65.967881][ T5244] EXT4-fs (loop0): 1 truncate cleaned up openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555572545d0) = 5246 ./strace-static-x86_64: Process 5246 attached [pid 5246] chdir("./86") = 0 [pid 5246] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5246] setpgid(0, 0) = 0 [pid 5246] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5246] write(3, "1000", 4) = 4 [pid 5246] close(3) = 0 [pid 5246] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5246] memfd_create("syzkaller", 0) = 3 [pid 5246] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5246] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5246] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5246] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5246] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5246] close(3) = 0 [pid 5246] mkdir("./file0", 0777) = 0 [pid 5246] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5246] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5246] chdir("./file0") = 0 [pid 5246] ioctl(4, LOOP_CLR_FD) = 0 [pid 5246] close(4) = 0 [pid 5246] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5246] exit_group(0) = ? [pid 5246] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5246, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- umount2("./86", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./86", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./86/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./86/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./86/binderfs") = 0 umount2("./86/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./86/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./86/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./86/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5248 ./strace-static-x86_64: Process 5248 attached [pid 5248] chdir("./87") = 0 [pid 5248] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5248] setpgid(0, 0) = 0 [pid 5248] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5248] write(3, "1000", 4) = 4 [pid 5248] close(3) = 0 [pid 5248] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5248] memfd_create("syzkaller", 0) = 3 [pid 5248] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5248] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5248] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5248] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 66.038426][ T5246] loop0: detected capacity change from 0 to 512 [ 66.047101][ T5246] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 66.056946][ T5246] EXT4-fs (loop0): orphan cleanup on readonly fs [ 66.065245][ T5246] EXT4-fs (loop0): 1 truncate cleaned up [pid 5248] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5248] close(3) = 0 [pid 5248] mkdir("./file0", 0777) = 0 [pid 5248] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5248] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5248] chdir("./file0") = 0 [pid 5248] ioctl(4, LOOP_CLR_FD) = 0 [pid 5248] close(4) = 0 [pid 5248] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5248] exit_group(0) = ? [pid 5248] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5248, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./87", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./87", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./87/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./87/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./87/binderfs") = 0 umount2("./87/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./87/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./87/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 [ 66.119531][ T5248] loop0: detected capacity change from 0 to 512 [ 66.129641][ T5248] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 66.139767][ T5248] EXT4-fs (loop0): orphan cleanup on readonly fs [ 66.148057][ T5248] EXT4-fs (loop0): 1 truncate cleaned up getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./87/file0") = 0 getdents64(3, 0x555557255620 /* 0 entries */, 32768) = 0 close(3) = 0 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./strace-static-x86_64: Process 5250 attached , child_tidptr=0x5555572545d0) = 5250 [pid 5250] chdir("./88") = 0 [pid 5250] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5250] setpgid(0, 0) = 0 [pid 5250] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5250] write(3, "1000", 4) = 4 [pid 5250] close(3) = 0 [pid 5250] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5250] memfd_create("syzkaller", 0) = 3 [pid 5250] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5250] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5250] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5250] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5250] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5250] close(3) = 0 [pid 5250] mkdir("./file0", 0777) = 0 [pid 5250] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5250] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5250] chdir("./file0") = 0 [pid 5250] ioctl(4, LOOP_CLR_FD) = 0 [pid 5250] close(4) = 0 [pid 5250] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5250] exit_group(0) = ? [pid 5250] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5250, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./88/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./88/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./88/binderfs") = 0 umount2("./88/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [ 66.218139][ T5250] loop0: detected capacity change from 0 to 512 [ 66.226503][ T5250] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 66.236624][ T5250] EXT4-fs (loop0): orphan cleanup on readonly fs [ 66.245412][ T5250] EXT4-fs (loop0): 1 truncate cleaned up umount2("./88/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./88/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./88/file0") = 0 getdents64(3, 0x555557255620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./88") = 0 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, child_tidptr=0x5555572545d0) = 5252 ./strace-static-x86_64: Process 5252 attached [pid 5252] chdir("./89") = 0 [pid 5252] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5252] setpgid(0, 0) = 0 [pid 5252] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5252] write(3, "1000", 4) = 4 [pid 5252] close(3) = 0 [pid 5252] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5252] memfd_create("syzkaller", 0) = 3 [pid 5252] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5252] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5252] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5252] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5252] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5252] close(3) = 0 [pid 5252] mkdir("./file0", 0777) = 0 [pid 5252] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5252] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5252] chdir("./file0") = 0 [pid 5252] ioctl(4, LOOP_CLR_FD) = 0 [pid 5252] close(4) = 0 [pid 5252] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5252] exit_group(0) = ? [pid 5252] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5252, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./89", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./89", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./89/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./89/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./89/binderfs") = 0 [ 66.325165][ T5252] loop0: detected capacity change from 0 to 512 [ 66.334337][ T5252] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 66.344624][ T5252] EXT4-fs (loop0): orphan cleanup on readonly fs [ 66.353850][ T5252] EXT4-fs (loop0): 1 truncate cleaned up umount2("./89/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./89/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./89/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./89/file0") = 0 getdents64(3, 0x555557255620 /* 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./strace-static-x86_64: Process 5254 attached , child_tidptr=0x5555572545d0) = 5254 [pid 5254] chdir("./90") = 0 [pid 5254] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5254] setpgid(0, 0) = 0 [pid 5254] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5254] write(3, "1000", 4) = 4 [pid 5254] close(3) = 0 [pid 5254] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5254] memfd_create("syzkaller", 0) = 3 [pid 5254] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5254] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5254] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5254] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5254] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5254] close(3) = 0 [pid 5254] mkdir("./file0", 0777) = 0 [pid 5254] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5254] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5254] chdir("./file0") = 0 [pid 5254] ioctl(4, LOOP_CLR_FD) = 0 [pid 5254] close(4) = 0 [pid 5254] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5254] exit_group(0) = ? [pid 5254] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5254, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./90/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./90/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./90/binderfs") = 0 umount2("./90/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [ 66.436254][ T5254] loop0: detected capacity change from 0 to 512 [ 66.446381][ T5254] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 66.456566][ T5254] EXT4-fs (loop0): orphan cleanup on readonly fs [ 66.465536][ T5254] EXT4-fs (loop0): 1 truncate cleaned up umount2("./90/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./90/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./90/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5256 ./strace-static-x86_64: Process 5256 attached [pid 5256] chdir("./91") = 0 [pid 5256] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5256] setpgid(0, 0) = 0 [pid 5256] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5256] write(3, "1000", 4) = 4 [pid 5256] close(3) = 0 [pid 5256] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5256] memfd_create("syzkaller", 0) = 3 [pid 5256] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5256] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5256] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5256] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5256] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5256] close(3) = 0 [pid 5256] mkdir("./file0", 0777) = 0 [pid 5256] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5256] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5256] chdir("./file0") = 0 [pid 5256] ioctl(4, LOOP_CLR_FD) = 0 [pid 5256] close(4) = 0 [pid 5256] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5256] exit_group(0) = ? [pid 5256] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5256, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./91", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./91", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./91/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./91/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./91/binderfs") = 0 umount2("./91/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./91/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./91/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./91/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5258 ./strace-static-x86_64: Process 5258 attached [pid 5258] chdir("./92") = 0 [pid 5258] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5258] setpgid(0, 0) = 0 [pid 5258] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5258] write(3, "1000", 4) = 4 [pid 5258] close(3) = 0 [pid 5258] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5258] memfd_create("syzkaller", 0) = 3 [pid 5258] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [ 66.540990][ T5256] loop0: detected capacity change from 0 to 512 [ 66.550346][ T5256] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 66.560912][ T5256] EXT4-fs (loop0): orphan cleanup on readonly fs [ 66.569545][ T5256] EXT4-fs (loop0): 1 truncate cleaned up [pid 5258] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5258] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5258] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5258] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5258] close(3) = 0 [pid 5258] mkdir("./file0", 0777) = 0 [pid 5258] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5258] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5258] chdir("./file0") = 0 [pid 5258] ioctl(4, LOOP_CLR_FD) = 0 [pid 5258] close(4) = 0 [pid 5258] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5258] exit_group(0) = ? [pid 5258] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5258, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- umount2("./92", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./92", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./92/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./92/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./92/binderfs") = 0 umount2("./92/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./92/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 66.626828][ T5258] loop0: detected capacity change from 0 to 512 [ 66.636245][ T5258] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 66.646114][ T5258] EXT4-fs (loop0): orphan cleanup on readonly fs [ 66.656147][ T5258] EXT4-fs (loop0): 1 truncate cleaned up lstat("./92/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./92/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5260 ./strace-static-x86_64: Process 5260 attached [pid 5260] chdir("./93") = 0 [pid 5260] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5260] setpgid(0, 0) = 0 [pid 5260] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5260] write(3, "1000", 4) = 4 [pid 5260] close(3) = 0 [pid 5260] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5260] memfd_create("syzkaller", 0) = 3 [pid 5260] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5260] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5260] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5260] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5260] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5260] close(3) = 0 [pid 5260] mkdir("./file0", 0777) = 0 [pid 5260] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5260] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5260] chdir("./file0") = 0 [pid 5260] ioctl(4, LOOP_CLR_FD) = 0 [pid 5260] close(4) = 0 [pid 5260] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5260] exit_group(0) = ? [pid 5260] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5260, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./93/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./93/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./93/binderfs") = 0 umount2("./93/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./93/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./93/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./93/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 66.733369][ T5260] loop0: detected capacity change from 0 to 512 [ 66.743259][ T5260] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 66.753193][ T5260] EXT4-fs (loop0): orphan cleanup on readonly fs [ 66.762088][ T5260] EXT4-fs (loop0): 1 truncate cleaned up openat(AT_FDCWD, "./93/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./93/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5262 ./strace-static-x86_64: Process 5262 attached [pid 5262] chdir("./94") = 0 [pid 5262] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5262] setpgid(0, 0) = 0 [pid 5262] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5262] write(3, "1000", 4) = 4 [pid 5262] close(3) = 0 [pid 5262] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5262] memfd_create("syzkaller", 0) = 3 [pid 5262] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5262] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5262] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5262] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5262] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5262] close(3) = 0 [pid 5262] mkdir("./file0", 0777) = 0 [pid 5262] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5262] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5262] chdir("./file0") = 0 [pid 5262] ioctl(4, LOOP_CLR_FD) = 0 [pid 5262] close(4) = 0 [pid 5262] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5262] exit_group(0) = ? [pid 5262] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5262, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./94/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./94/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./94/binderfs") = 0 umount2("./94/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./94/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./94/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./94/file0") = 0 getdents64(3, 0x555557255620 /* 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) close(3) = 0 [ 66.833816][ T5262] loop0: detected capacity change from 0 to 512 [ 66.843910][ T5262] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 66.853909][ T5262] EXT4-fs (loop0): orphan cleanup on readonly fs [ 66.862395][ T5262] EXT4-fs (loop0): 1 truncate cleaned up clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5264 attached , child_tidptr=0x5555572545d0) = 5264 [pid 5264] chdir("./95") = 0 [pid 5264] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5264] setpgid(0, 0) = 0 [pid 5264] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5264] write(3, "1000", 4) = 4 [pid 5264] close(3) = 0 [pid 5264] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5264] memfd_create("syzkaller", 0) = 3 [pid 5264] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5264] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5264] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5264] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5264] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5264] close(3) = 0 [pid 5264] mkdir("./file0", 0777) = 0 [pid 5264] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5264] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5264] chdir("./file0") = 0 [pid 5264] ioctl(4, LOOP_CLR_FD) = 0 [pid 5264] close(4) = 0 [pid 5264] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5264] exit_group(0) = ? [pid 5264] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5264, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./95/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./95/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./95/binderfs") = 0 umount2("./95/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./95/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./95/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./95/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5266 ./strace-static-x86_64: Process 5266 attached [pid 5266] chdir("./96") = 0 [pid 5266] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5266] setpgid(0, 0) = 0 [pid 5266] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5266] write(3, "1000", 4) = 4 [pid 5266] close(3) = 0 [ 66.922479][ T5264] loop0: detected capacity change from 0 to 512 [ 66.931458][ T5264] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 66.941290][ T5264] EXT4-fs (loop0): orphan cleanup on readonly fs [ 66.949784][ T5264] EXT4-fs (loop0): 1 truncate cleaned up [pid 5266] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5266] memfd_create("syzkaller", 0) = 3 [pid 5266] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5266] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5266] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5266] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5266] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5266] close(3) = 0 [pid 5266] mkdir("./file0", 0777) = 0 [pid 5266] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5266] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5266] chdir("./file0") = 0 [pid 5266] ioctl(4, LOOP_CLR_FD) = 0 [pid 5266] close(4) = 0 [pid 5266] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5266] exit_group(0) = ? [pid 5266] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5266, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./96", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./96", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./96/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./96/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./96/binderfs") = 0 [ 67.008673][ T5266] loop0: detected capacity change from 0 to 512 [ 67.019116][ T5266] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 67.029398][ T5266] EXT4-fs (loop0): orphan cleanup on readonly fs [ 67.038089][ T5266] EXT4-fs (loop0): 1 truncate cleaned up umount2("./96/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./96/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./96/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./96/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5268 ./strace-static-x86_64: Process 5268 attached [pid 5268] chdir("./97") = 0 [pid 5268] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5268] setpgid(0, 0) = 0 [pid 5268] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5268] write(3, "1000", 4) = 4 [pid 5268] close(3) = 0 [pid 5268] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5268] memfd_create("syzkaller", 0) = 3 [pid 5268] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5268] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5268] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5268] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5268] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5268] close(3) = 0 [pid 5268] mkdir("./file0", 0777) = 0 [pid 5268] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5268] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5268] chdir("./file0") = 0 [pid 5268] ioctl(4, LOOP_CLR_FD) = 0 [pid 5268] close(4) = 0 [pid 5268] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5268] exit_group(0) = ? [pid 5268] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5268, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./97", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./97", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./97/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./97/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./97/binderfs") = 0 umount2("./97/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./97/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./97/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./97/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5270 ./strace-static-x86_64: Process 5270 attached [pid 5270] chdir("./98") = 0 [pid 5270] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5270] setpgid(0, 0) = 0 [pid 5270] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5270] write(3, "1000", 4) = 4 [pid 5270] close(3) = 0 [pid 5270] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5270] memfd_create("syzkaller", 0) = 3 [pid 5270] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5270] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5270] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5270] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 67.116308][ T5268] loop0: detected capacity change from 0 to 512 [ 67.124598][ T5268] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 67.134666][ T5268] EXT4-fs (loop0): orphan cleanup on readonly fs [ 67.143764][ T5268] EXT4-fs (loop0): 1 truncate cleaned up [pid 5270] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5270] close(3) = 0 [pid 5270] mkdir("./file0", 0777) = 0 [pid 5270] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5270] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5270] chdir("./file0") = 0 [pid 5270] ioctl(4, LOOP_CLR_FD) = 0 [pid 5270] close(4) = 0 [pid 5270] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5270] exit_group(0) = ? [pid 5270] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5270, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./98/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./98/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./98/binderfs") = 0 [ 67.194713][ T5270] loop0: detected capacity change from 0 to 512 [ 67.203954][ T5270] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 67.214842][ T5270] EXT4-fs (loop0): orphan cleanup on readonly fs [ 67.223730][ T5270] EXT4-fs (loop0): 1 truncate cleaned up umount2("./98/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./98/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./98/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./98/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5272 ./strace-static-x86_64: Process 5272 attached [pid 5272] chdir("./99") = 0 [pid 5272] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5272] setpgid(0, 0) = 0 [pid 5272] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5272] write(3, "1000", 4) = 4 [pid 5272] close(3) = 0 [pid 5272] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5272] memfd_create("syzkaller", 0) = 3 [pid 5272] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5272] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5272] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5272] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5272] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5272] close(3) = 0 [pid 5272] mkdir("./file0", 0777) = 0 [pid 5272] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5272] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5272] chdir("./file0") = 0 [pid 5272] ioctl(4, LOOP_CLR_FD) = 0 [pid 5272] close(4) = 0 [pid 5272] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5272] exit_group(0) = ? [pid 5272] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5272, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./99/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./99/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./99/binderfs") = 0 umount2("./99/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./99/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./99/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./99/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5274 ./strace-static-x86_64: Process 5274 attached [pid 5274] chdir("./100") = 0 [pid 5274] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5274] setpgid(0, 0) = 0 [pid 5274] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5274] write(3, "1000", 4) = 4 [pid 5274] close(3) = 0 [pid 5274] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5274] memfd_create("syzkaller", 0) = 3 [pid 5274] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5274] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [ 67.300413][ T5272] loop0: detected capacity change from 0 to 512 [ 67.308666][ T5272] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 67.319370][ T5272] EXT4-fs (loop0): orphan cleanup on readonly fs [ 67.328363][ T5272] EXT4-fs (loop0): 1 truncate cleaned up [pid 5274] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5274] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5274] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5274] close(3) = 0 [pid 5274] mkdir("./file0", 0777) = 0 [pid 5274] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5274] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5274] chdir("./file0") = 0 [pid 5274] ioctl(4, LOOP_CLR_FD) = 0 [pid 5274] close(4) = 0 [pid 5274] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5274] exit_group(0) = ? [pid 5274] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5274, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./100/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./100/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./100/binderfs") = 0 umount2("./100/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./100/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./100/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./100/file0") = 0 getdents64(3, 0x555557255620 /* 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) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555572545d0) = 5276 ./strace-static-x86_64: Process 5276 attached [pid 5276] chdir("./101") = 0 [pid 5276] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5276] setpgid(0, 0) = 0 [pid 5276] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5276] write(3, "1000", 4) = 4 [pid 5276] close(3) = 0 [pid 5276] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5276] memfd_create("syzkaller", 0) = 3 [ 67.381703][ T5274] loop0: detected capacity change from 0 to 512 [ 67.389866][ T5274] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 67.400065][ T5274] EXT4-fs (loop0): orphan cleanup on readonly fs [ 67.409460][ T5274] EXT4-fs (loop0): 1 truncate cleaned up [pid 5276] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5276] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5276] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5276] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5276] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5276] close(3) = 0 [pid 5276] mkdir("./file0", 0777) = 0 [pid 5276] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5276] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5276] chdir("./file0") = 0 [pid 5276] ioctl(4, LOOP_CLR_FD) = 0 [pid 5276] close(4) = 0 [pid 5276] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5276] exit_group(0) = ? [pid 5276] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5276, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./101", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./101", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./101/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./101/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./101/binderfs") = 0 umount2("./101/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./101/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./101/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 [ 67.468226][ T5276] loop0: detected capacity change from 0 to 512 [ 67.476713][ T5276] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 67.486601][ T5276] EXT4-fs (loop0): orphan cleanup on readonly fs [ 67.494758][ T5276] EXT4-fs (loop0): 1 truncate cleaned up fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./101/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5278 ./strace-static-x86_64: Process 5278 attached [pid 5278] chdir("./102") = 0 [pid 5278] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5278] setpgid(0, 0) = 0 [pid 5278] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5278] write(3, "1000", 4) = 4 [pid 5278] close(3) = 0 [pid 5278] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5278] memfd_create("syzkaller", 0) = 3 [pid 5278] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5278] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5278] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5278] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5278] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5278] close(3) = 0 [pid 5278] mkdir("./file0", 0777) = 0 [pid 5278] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5278] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5278] chdir("./file0") = 0 [pid 5278] ioctl(4, LOOP_CLR_FD) = 0 [pid 5278] close(4) = 0 [pid 5278] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5278] exit_group(0) = ? [pid 5278] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5278, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./102/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./102/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./102/binderfs") = 0 [ 67.563018][ T5278] loop0: detected capacity change from 0 to 512 [ 67.573419][ T5278] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 67.583670][ T5278] EXT4-fs (loop0): orphan cleanup on readonly fs [ 67.592885][ T5278] EXT4-fs (loop0): 1 truncate cleaned up umount2("./102/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./102/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./102/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./102/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5280 ./strace-static-x86_64: Process 5280 attached [pid 5280] chdir("./103") = 0 [pid 5280] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5280] setpgid(0, 0) = 0 [pid 5280] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5280] write(3, "1000", 4) = 4 [pid 5280] close(3) = 0 [pid 5280] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5280] memfd_create("syzkaller", 0) = 3 [pid 5280] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5280] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5280] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5280] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5280] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5280] close(3) = 0 [pid 5280] mkdir("./file0", 0777) = 0 [pid 5280] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5280] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5280] chdir("./file0") = 0 [pid 5280] ioctl(4, LOOP_CLR_FD) = 0 [pid 5280] close(4) = 0 [pid 5280] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5280] exit_group(0) = ? [pid 5280] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5280, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./103", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./103", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./103/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./103/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./103/binderfs") = 0 umount2("./103/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./103/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./103/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./103/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5282 ./strace-static-x86_64: Process 5282 attached [pid 5282] chdir("./104") = 0 [pid 5282] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5282] setpgid(0, 0) = 0 [pid 5282] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5282] write(3, "1000", 4) = 4 [pid 5282] close(3) = 0 [ 67.664864][ T5280] loop0: detected capacity change from 0 to 512 [ 67.674139][ T5280] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 67.684662][ T5280] EXT4-fs (loop0): orphan cleanup on readonly fs [ 67.692935][ T5280] EXT4-fs (loop0): 1 truncate cleaned up [pid 5282] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5282] memfd_create("syzkaller", 0) = 3 [pid 5282] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5282] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5282] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5282] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5282] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5282] close(3) = 0 [pid 5282] mkdir("./file0", 0777) = 0 [pid 5282] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5282] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5282] chdir("./file0") = 0 [pid 5282] ioctl(4, LOOP_CLR_FD) = 0 [pid 5282] close(4) = 0 [pid 5282] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5282] exit_group(0) = ? [pid 5282] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5282, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./104", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./104", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./104/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./104/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./104/binderfs") = 0 umount2("./104/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./104/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./104/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./104/file0") = 0 getdents64(3, 0x555557255620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./104") = 0 mkdir("./105", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 67.750859][ T5282] loop0: detected capacity change from 0 to 512 [ 67.759655][ T5282] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 67.769893][ T5282] EXT4-fs (loop0): orphan cleanup on readonly fs [ 67.779480][ T5282] EXT4-fs (loop0): 1 truncate cleaned up ioctl(3, LOOP_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 5284 attached , child_tidptr=0x5555572545d0) = 5284 [pid 5284] chdir("./105") = 0 [pid 5284] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5284] setpgid(0, 0) = 0 [pid 5284] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5284] write(3, "1000", 4) = 4 [pid 5284] close(3) = 0 [pid 5284] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5284] memfd_create("syzkaller", 0) = 3 [pid 5284] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5284] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5284] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5284] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5284] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5284] close(3) = 0 [pid 5284] mkdir("./file0", 0777) = 0 [pid 5284] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5284] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5284] chdir("./file0") = 0 [pid 5284] ioctl(4, LOOP_CLR_FD) = 0 [pid 5284] close(4) = 0 [pid 5284] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5284] exit_group(0) = ? [pid 5284] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5284, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./105/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./105/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./105/binderfs") = 0 umount2("./105/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./105/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./105/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./105/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5286 [ 67.856454][ T5284] loop0: detected capacity change from 0 to 512 [ 67.864454][ T5284] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 67.874787][ T5284] EXT4-fs (loop0): orphan cleanup on readonly fs [ 67.883243][ T5284] EXT4-fs (loop0): 1 truncate cleaned up ./strace-static-x86_64: Process 5286 attached [pid 5286] chdir("./106") = 0 [pid 5286] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5286] setpgid(0, 0) = 0 [pid 5286] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5286] write(3, "1000", 4) = 4 [pid 5286] close(3) = 0 [pid 5286] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5286] memfd_create("syzkaller", 0) = 3 [pid 5286] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5286] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5286] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5286] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5286] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5286] close(3) = 0 [pid 5286] mkdir("./file0", 0777) = 0 [pid 5286] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5286] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5286] chdir("./file0") = 0 [pid 5286] ioctl(4, LOOP_CLR_FD) = 0 [pid 5286] close(4) = 0 [pid 5286] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5286] exit_group(0) = ? [pid 5286] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5286, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./106/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./106/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./106/binderfs") = 0 umount2("./106/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./106/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./106/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 [ 67.953332][ T5286] loop0: detected capacity change from 0 to 512 [ 67.962012][ T5286] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 67.972467][ T5286] EXT4-fs (loop0): orphan cleanup on readonly fs [ 67.982113][ T5286] EXT4-fs (loop0): 1 truncate cleaned up rmdir("./106/file0") = 0 getdents64(3, 0x555557255620 /* 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) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5288 attached , child_tidptr=0x5555572545d0) = 5288 [pid 5288] chdir("./107") = 0 [pid 5288] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5288] setpgid(0, 0) = 0 [pid 5288] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5288] write(3, "1000", 4) = 4 [pid 5288] close(3) = 0 [pid 5288] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5288] memfd_create("syzkaller", 0) = 3 [pid 5288] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5288] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5288] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5288] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5288] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5288] close(3) = 0 [pid 5288] mkdir("./file0", 0777) = 0 [pid 5288] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5288] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5288] chdir("./file0") = 0 [pid 5288] ioctl(4, LOOP_CLR_FD) = 0 [pid 5288] close(4) = 0 [pid 5288] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5288] exit_group(0) = ? [pid 5288] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5288, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- umount2("./107", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./107", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./107/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./107/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./107/binderfs") = 0 umount2("./107/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./107/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./107/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./107/file0") = 0 getdents64(3, 0x555557255620 /* 0 entries */, 32768) = 0 [ 68.046983][ T5288] loop0: detected capacity change from 0 to 512 [ 68.055788][ T5288] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 68.065599][ T5288] EXT4-fs (loop0): orphan cleanup on readonly fs [ 68.074345][ T5288] EXT4-fs (loop0): 1 truncate cleaned up close(3) = 0 rmdir("./107") = 0 mkdir("./108", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555572545d0) = 5290 ./strace-static-x86_64: Process 5290 attached [pid 5290] chdir("./108") = 0 [pid 5290] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5290] setpgid(0, 0) = 0 [pid 5290] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5290] write(3, "1000", 4) = 4 [pid 5290] close(3) = 0 [pid 5290] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5290] memfd_create("syzkaller", 0) = 3 [pid 5290] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5290] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5290] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5290] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5290] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5290] close(3) = 0 [pid 5290] mkdir("./file0", 0777) = 0 [pid 5290] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5290] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5290] chdir("./file0") = 0 [pid 5290] ioctl(4, LOOP_CLR_FD) = 0 [pid 5290] close(4) = 0 [pid 5290] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5290] exit_group(0) = ? [pid 5290] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5290, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./108/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./108/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./108/binderfs") = 0 umount2("./108/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./108/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./108/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./108/file0") = 0 getdents64(3, 0x555557255620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./108") = 0 mkdir("./109", 0777) = 0 [ 68.147342][ T5290] loop0: detected capacity change from 0 to 512 [ 68.156815][ T5290] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 68.167664][ T5290] EXT4-fs (loop0): orphan cleanup on readonly fs [ 68.176626][ T5290] EXT4-fs (loop0): 1 truncate cleaned up openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555572545d0) = 5292 ./strace-static-x86_64: Process 5292 attached [pid 5292] chdir("./109") = 0 [pid 5292] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5292] setpgid(0, 0) = 0 [pid 5292] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5292] write(3, "1000", 4) = 4 [pid 5292] close(3) = 0 [pid 5292] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5292] memfd_create("syzkaller", 0) = 3 [pid 5292] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5292] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5292] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5292] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5292] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5292] close(3) = 0 [pid 5292] mkdir("./file0", 0777) = 0 [pid 5292] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5292] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5292] chdir("./file0") = 0 [pid 5292] ioctl(4, LOOP_CLR_FD) = 0 [pid 5292] close(4) = 0 [pid 5292] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5292] exit_group(0) = ? [pid 5292] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5292, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./109", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./109", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./109/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./109/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./109/binderfs") = 0 umount2("./109/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./109/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./109/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./109/file0") = 0 getdents64(3, 0x555557255620 /* 0 entries */, 32768) = 0 close(3) = 0 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) [ 68.242383][ T5292] loop0: detected capacity change from 0 to 512 [ 68.252454][ T5292] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 68.262593][ T5292] EXT4-fs (loop0): orphan cleanup on readonly fs [ 68.271950][ T5292] EXT4-fs (loop0): 1 truncate cleaned up close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5294 attached [pid 5294] chdir("./110") = 0 [pid 5294] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5294] setpgid(0, 0) = 0 [pid 5294] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5070] <... clone resumed>, child_tidptr=0x5555572545d0) = 5294 [pid 5294] <... openat resumed>) = 3 [pid 5294] write(3, "1000", 4) = 4 [pid 5294] close(3) = 0 [pid 5294] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5294] memfd_create("syzkaller", 0) = 3 [pid 5294] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5294] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5294] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5294] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5294] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5294] close(3) = 0 [pid 5294] mkdir("./file0", 0777) = 0 [pid 5294] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5294] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5294] chdir("./file0") = 0 [pid 5294] ioctl(4, LOOP_CLR_FD) = 0 [pid 5294] close(4) = 0 [pid 5294] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5294] exit_group(0) = ? [pid 5294] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5294, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- umount2("./110", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./110", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./110/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./110/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./110/binderfs") = 0 [ 68.334815][ T5294] loop0: detected capacity change from 0 to 512 [ 68.343855][ T5294] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 68.354297][ T5294] EXT4-fs (loop0): orphan cleanup on readonly fs [ 68.366379][ T5294] EXT4-fs (loop0): 1 truncate cleaned up umount2("./110/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./110/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./110/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./110/file0") = 0 getdents64(3, 0x555557255620 /* 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./strace-static-x86_64: Process 5296 attached , child_tidptr=0x5555572545d0) = 5296 [pid 5296] chdir("./111") = 0 [pid 5296] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5296] setpgid(0, 0) = 0 [pid 5296] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5296] write(3, "1000", 4) = 4 [pid 5296] close(3) = 0 [pid 5296] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5296] memfd_create("syzkaller", 0) = 3 [pid 5296] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5296] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5296] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5296] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5296] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5296] close(3) = 0 [pid 5296] mkdir("./file0", 0777) = 0 [pid 5296] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5296] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5296] chdir("./file0") = 0 [pid 5296] ioctl(4, LOOP_CLR_FD) = 0 [pid 5296] close(4) = 0 [pid 5296] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5296] exit_group(0) = ? [pid 5296] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5296, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./111/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./111/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./111/binderfs") = 0 umount2("./111/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./111/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./111/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./111/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5298 ./strace-static-x86_64: Process 5298 attached [pid 5298] chdir("./112") = 0 [pid 5298] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5298] setpgid(0, 0) = 0 [pid 5298] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5298] write(3, "1000", 4) = 4 [pid 5298] close(3) = 0 [pid 5298] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5298] memfd_create("syzkaller", 0) = 3 [ 68.445524][ T5296] loop0: detected capacity change from 0 to 512 [ 68.454125][ T5296] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 68.464148][ T5296] EXT4-fs (loop0): orphan cleanup on readonly fs [ 68.472643][ T5296] EXT4-fs (loop0): 1 truncate cleaned up [pid 5298] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5298] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5298] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5298] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5298] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5298] close(3) = 0 [pid 5298] mkdir("./file0", 0777) = 0 [pid 5298] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5298] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5298] chdir("./file0") = 0 [pid 5298] ioctl(4, LOOP_CLR_FD) = 0 [pid 5298] close(4) = 0 [pid 5298] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5298] exit_group(0) = ? [pid 5298] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5298, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./112/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./112/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./112/binderfs") = 0 umount2("./112/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./112/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./112/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./112/file0") = 0 getdents64(3, 0x555557255620 /* 0 entries */, 32768) = 0 close(3) = 0 [ 68.530830][ T5298] loop0: detected capacity change from 0 to 512 [ 68.540678][ T5298] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 68.550699][ T5298] EXT4-fs (loop0): orphan cleanup on readonly fs [ 68.559333][ T5298] EXT4-fs (loop0): 1 truncate cleaned up 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=0x5555572545d0) = 5300 ./strace-static-x86_64: Process 5300 attached [pid 5300] chdir("./113") = 0 [pid 5300] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5300] setpgid(0, 0) = 0 [pid 5300] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5300] write(3, "1000", 4) = 4 [pid 5300] close(3) = 0 [pid 5300] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5300] memfd_create("syzkaller", 0) = 3 [pid 5300] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5300] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5300] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5300] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5300] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5300] close(3) = 0 [pid 5300] mkdir("./file0", 0777) = 0 [pid 5300] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5300] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5300] chdir("./file0") = 0 [pid 5300] ioctl(4, LOOP_CLR_FD) = 0 [pid 5300] close(4) = 0 [pid 5300] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5300] exit_group(0) = ? [pid 5300] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5300, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./113/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./113/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./113/binderfs") = 0 [ 68.626888][ T5300] loop0: detected capacity change from 0 to 512 [ 68.636029][ T5300] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 68.645746][ T5300] EXT4-fs (loop0): orphan cleanup on readonly fs [ 68.653910][ T5300] EXT4-fs (loop0): 1 truncate cleaned up umount2("./113/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./113/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./113/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./113/file0") = 0 getdents64(3, 0x555557255620 /* 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) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555572545d0) = 5302 ./strace-static-x86_64: Process 5302 attached [pid 5302] chdir("./114") = 0 [pid 5302] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5302] setpgid(0, 0) = 0 [pid 5302] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5302] write(3, "1000", 4) = 4 [pid 5302] close(3) = 0 [pid 5302] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5302] memfd_create("syzkaller", 0) = 3 [pid 5302] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5302] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5302] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5302] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5302] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5302] close(3) = 0 [pid 5302] mkdir("./file0", 0777) = 0 [pid 5302] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5302] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5302] chdir("./file0") = 0 [pid 5302] ioctl(4, LOOP_CLR_FD) = 0 [pid 5302] close(4) = 0 [pid 5302] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5302] exit_group(0) = ? [pid 5302] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5302, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- umount2("./114", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./114", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./114/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./114/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./114/binderfs") = 0 umount2("./114/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./114/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./114/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./114/file0") = 0 getdents64(3, 0x555557255620 /* 0 entries */, 32768) = 0 close(3) = 0 [ 68.735546][ T5302] loop0: detected capacity change from 0 to 512 [ 68.744523][ T5302] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 68.754853][ T5302] EXT4-fs (loop0): orphan cleanup on readonly fs [ 68.763985][ T5302] EXT4-fs (loop0): 1 truncate cleaned up 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, child_tidptr=0x5555572545d0) = 5304 ./strace-static-x86_64: Process 5304 attached [pid 5304] chdir("./115") = 0 [pid 5304] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5304] setpgid(0, 0) = 0 [pid 5304] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5304] write(3, "1000", 4) = 4 [pid 5304] close(3) = 0 [pid 5304] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5304] memfd_create("syzkaller", 0) = 3 [pid 5304] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5304] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5304] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5304] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5304] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5304] close(3) = 0 [pid 5304] mkdir("./file0", 0777) = 0 [pid 5304] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5304] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5304] chdir("./file0") = 0 [pid 5304] ioctl(4, LOOP_CLR_FD) = 0 [pid 5304] close(4) = 0 [pid 5304] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5304] exit_group(0) = ? [pid 5304] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5304, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./115/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./115/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./115/binderfs") = 0 umount2("./115/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./115/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./115/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./115/file0") = 0 getdents64(3, 0x555557255620 /* 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) [ 68.831668][ T5304] loop0: detected capacity change from 0 to 512 [ 68.840034][ T5304] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 68.850343][ T5304] EXT4-fs (loop0): orphan cleanup on readonly fs [ 68.858659][ T5304] EXT4-fs (loop0): 1 truncate cleaned up close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5306 attached [pid 5306] chdir("./116" [pid 5070] <... clone resumed>, child_tidptr=0x5555572545d0) = 5306 [pid 5306] <... chdir resumed>) = 0 [pid 5306] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5306] setpgid(0, 0) = 0 [pid 5306] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5306] write(3, "1000", 4) = 4 [pid 5306] close(3) = 0 [pid 5306] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5306] memfd_create("syzkaller", 0) = 3 [pid 5306] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5306] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5306] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5306] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5306] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5306] close(3) = 0 [pid 5306] mkdir("./file0", 0777) = 0 [pid 5306] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5306] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5306] chdir("./file0") = 0 [pid 5306] ioctl(4, LOOP_CLR_FD) = 0 [pid 5306] close(4) = 0 [pid 5306] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5306] exit_group(0) = ? [pid 5306] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5306, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./116/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./116/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./116/binderfs") = 0 umount2("./116/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./116/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./116/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./116/file0") = 0 getdents64(3, 0x555557255620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./116") = 0 [ 68.924328][ T5306] loop0: detected capacity change from 0 to 512 [ 68.933735][ T5306] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 68.943528][ T5306] EXT4-fs (loop0): orphan cleanup on readonly fs [ 68.953119][ T5306] EXT4-fs (loop0): 1 truncate cleaned up 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 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555572545d0) = 5308 ./strace-static-x86_64: Process 5308 attached [pid 5308] chdir("./117") = 0 [pid 5308] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5308] setpgid(0, 0) = 0 [pid 5308] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5308] write(3, "1000", 4) = 4 [pid 5308] close(3) = 0 [pid 5308] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5308] memfd_create("syzkaller", 0) = 3 [pid 5308] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5308] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5308] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5308] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5308] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5308] close(3) = 0 [pid 5308] mkdir("./file0", 0777) = 0 [pid 5308] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5308] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5308] chdir("./file0") = 0 [pid 5308] ioctl(4, LOOP_CLR_FD) = 0 [pid 5308] close(4) = 0 [pid 5308] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5308] exit_group(0) = ? [pid 5308] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5308, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- umount2("./117", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./117", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./117/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./117/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./117/binderfs") = 0 umount2("./117/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./117/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./117/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 [ 69.020015][ T5308] loop0: detected capacity change from 0 to 512 [ 69.029689][ T5308] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 69.039485][ T5308] EXT4-fs (loop0): orphan cleanup on readonly fs [ 69.048165][ T5308] EXT4-fs (loop0): 1 truncate cleaned up getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./117/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5310 ./strace-static-x86_64: Process 5310 attached [pid 5310] chdir("./118") = 0 [pid 5310] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5310] setpgid(0, 0) = 0 [pid 5310] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5310] write(3, "1000", 4) = 4 [pid 5310] close(3) = 0 [pid 5310] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5310] memfd_create("syzkaller", 0) = 3 [pid 5310] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5310] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5310] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5310] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5310] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5310] close(3) = 0 [pid 5310] mkdir("./file0", 0777) = 0 [pid 5310] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5310] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5310] chdir("./file0") = 0 [pid 5310] ioctl(4, LOOP_CLR_FD) = 0 [pid 5310] close(4) = 0 [pid 5310] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5310] exit_group(0) = ? [pid 5310] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5310, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- umount2("./118", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./118", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./118/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./118/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./118/binderfs") = 0 umount2("./118/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./118/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./118/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [ 69.119558][ T5310] loop0: detected capacity change from 0 to 512 [ 69.127731][ T5310] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 69.137522][ T5310] EXT4-fs (loop0): orphan cleanup on readonly fs [ 69.146822][ T5310] EXT4-fs (loop0): 1 truncate cleaned up 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./118/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5312 ./strace-static-x86_64: Process 5312 attached [pid 5312] chdir("./119") = 0 [pid 5312] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5312] setpgid(0, 0) = 0 [pid 5312] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5312] write(3, "1000", 4) = 4 [pid 5312] close(3) = 0 [pid 5312] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5312] memfd_create("syzkaller", 0) = 3 [pid 5312] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5312] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5312] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5312] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5312] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5312] close(3) = 0 [pid 5312] mkdir("./file0", 0777) = 0 [pid 5312] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5312] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5312] chdir("./file0") = 0 [pid 5312] ioctl(4, LOOP_CLR_FD) = 0 [pid 5312] close(4) = 0 [pid 5312] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5312] exit_group(0) = ? [pid 5312] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5312, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./119", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./119", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./119/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./119/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./119/binderfs") = 0 umount2("./119/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./119/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./119/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./119/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5314 ./strace-static-x86_64: Process 5314 attached [pid 5314] chdir("./120") = 0 [pid 5314] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5314] setpgid(0, 0) = 0 [pid 5314] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5314] write(3, "1000", 4) = 4 [pid 5314] close(3) = 0 [pid 5314] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5314] memfd_create("syzkaller", 0) = 3 [pid 5314] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5314] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5314] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5314] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 69.219728][ T5312] loop0: detected capacity change from 0 to 512 [ 69.228486][ T5312] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 69.239249][ T5312] EXT4-fs (loop0): orphan cleanup on readonly fs [ 69.247534][ T5312] EXT4-fs (loop0): 1 truncate cleaned up [pid 5314] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5314] close(3) = 0 [pid 5314] mkdir("./file0", 0777) = 0 [pid 5314] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5314] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5314] chdir("./file0") = 0 [pid 5314] ioctl(4, LOOP_CLR_FD) = 0 [pid 5314] close(4) = 0 [pid 5314] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5314] exit_group(0) = ? [pid 5314] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5314, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./120", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./120", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./120/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./120/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./120/binderfs") = 0 [ 69.298606][ T5314] loop0: detected capacity change from 0 to 512 [ 69.303366][ T5072] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 69.318398][ T5314] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 69.328094][ T5314] EXT4-fs (loop0): orphan cleanup on readonly fs [ 69.337306][ T5314] EXT4-fs (loop0): 1 truncate cleaned up umount2("./120/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./120/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./120/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./120/file0") = 0 getdents64(3, 0x555557255620 /* 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) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555572545d0) = 5316 ./strace-static-x86_64: Process 5316 attached [pid 5316] chdir("./121") = 0 [pid 5316] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5316] setpgid(0, 0) = 0 [pid 5316] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5316] write(3, "1000", 4) = 4 [pid 5316] close(3) = 0 [pid 5316] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5316] memfd_create("syzkaller", 0) = 3 [pid 5316] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5316] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5316] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5316] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5316] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5316] close(3) = 0 [pid 5316] mkdir("./file0", 0777) = 0 [pid 5316] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5316] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5316] chdir("./file0") = 0 [pid 5316] ioctl(4, LOOP_CLR_FD) = 0 [pid 5316] close(4) = 0 [pid 5316] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5316] exit_group(0) = ? [pid 5316] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5316, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./121/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./121/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./121/binderfs") = 0 umount2("./121/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./121/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./121/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./121/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5318 ./strace-static-x86_64: Process 5318 attached [pid 5318] chdir("./122") = 0 [pid 5318] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5318] setpgid(0, 0) = 0 [pid 5318] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5318] write(3, "1000", 4) = 4 [ 69.403670][ T5316] loop0: detected capacity change from 0 to 512 [ 69.412310][ T5316] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 69.422138][ T5316] EXT4-fs (loop0): orphan cleanup on readonly fs [ 69.432321][ T5316] EXT4-fs (loop0): 1 truncate cleaned up [pid 5318] close(3) = 0 [pid 5318] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5318] memfd_create("syzkaller", 0) = 3 [pid 5318] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5318] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5318] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5318] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5318] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5318] close(3) = 0 [pid 5318] mkdir("./file0", 0777) = 0 [pid 5318] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5318] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5318] chdir("./file0") = 0 [pid 5318] ioctl(4, LOOP_CLR_FD) = 0 [pid 5318] close(4) = 0 [pid 5318] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5318] exit_group(0) = ? [pid 5318] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5318, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./122/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./122/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./122/binderfs") = 0 umount2("./122/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./122/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./122/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./122/file0") = 0 getdents64(3, 0x555557255620 /* 0 entries */, 32768) = 0 [ 69.491197][ T5318] loop0: detected capacity change from 0 to 512 [ 69.499979][ T5318] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 69.510497][ T5318] EXT4-fs (loop0): orphan cleanup on readonly fs [ 69.519427][ T5318] EXT4-fs (loop0): 1 truncate cleaned up 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=0x5555572545d0) = 5320 ./strace-static-x86_64: Process 5320 attached [pid 5320] chdir("./123") = 0 [pid 5320] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5320] setpgid(0, 0) = 0 [pid 5320] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5320] write(3, "1000", 4) = 4 [pid 5320] close(3) = 0 [pid 5320] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5320] memfd_create("syzkaller", 0) = 3 [pid 5320] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5320] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5320] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5320] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5320] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5320] close(3) = 0 [pid 5320] mkdir("./file0", 0777) = 0 [pid 5320] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5320] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5320] chdir("./file0") = 0 [pid 5320] ioctl(4, LOOP_CLR_FD) = 0 [pid 5320] close(4) = 0 [pid 5320] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5320] exit_group(0) = ? [pid 5320] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5320, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- umount2("./123", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./123", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./123/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./123/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./123/binderfs") = 0 umount2("./123/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./123/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./123/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./123/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5322 ./strace-static-x86_64: Process 5322 attached [pid 5322] chdir("./124") = 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) = 3 [pid 5322] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5322] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5322] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 69.588267][ T5320] loop0: detected capacity change from 0 to 512 [ 69.596614][ T5320] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 69.606733][ T5320] EXT4-fs (loop0): orphan cleanup on readonly fs [ 69.615744][ T5320] EXT4-fs (loop0): 1 truncate cleaned up [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", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [ 69.652444][ T5322] loop0: detected capacity change from 0 to 512 [ 69.653542][ T5072] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 69.669658][ T5322] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 69.686807][ T5322] EXT4-fs (loop0): orphan cleanup on readonly fs [ 69.696619][ T5322] EXT4-fs (loop0): 1 truncate cleaned up [pid 5322] close(4) = 0 [pid 5322] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=3 /* 0.03 s */} --- umount2("./124", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./124", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./124/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./124/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./124/binderfs") = 0 umount2("./124/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./124/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./124/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./124/file0") = 0 getdents64(3, 0x555557255620 /* 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./strace-static-x86_64: Process 5324 attached , child_tidptr=0x5555572545d0) = 5324 [pid 5324] chdir("./125") = 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) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5324] munmap(0x7f9a8a8ad000, 262144) = 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", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [pid 5324] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=4 /* 0.04 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./125/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./125/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./125/binderfs") = 0 umount2("./125/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./125/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./125/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./125/file0") = 0 getdents64(3, 0x555557255620 /* 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) close(3) = 0 [ 69.772084][ T5324] loop0: detected capacity change from 0 to 512 [ 69.782096][ T5324] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 69.792188][ T5324] EXT4-fs (loop0): orphan cleanup on readonly fs [ 69.800966][ T5324] EXT4-fs (loop0): 1 truncate cleaned up clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555572545d0) = 5326 ./strace-static-x86_64: Process 5326 attached [pid 5326] chdir("./126") = 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 [pid 5326] memfd_create("syzkaller", 0) = 3 [pid 5326] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5326] munmap(0x7f9a8a8ad000, 262144) = 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", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [pid 5326] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=5 /* 0.05 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./126/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./126/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./126/binderfs") = 0 umount2("./126/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./126/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./126/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./126/file0") = 0 getdents64(3, 0x555557255620 /* 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) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5328 attached [ 69.862462][ T5326] loop0: detected capacity change from 0 to 512 [ 69.871424][ T5326] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 69.881618][ T5326] EXT4-fs (loop0): orphan cleanup on readonly fs [ 69.890694][ T5326] EXT4-fs (loop0): 1 truncate cleaned up [pid 5328] chdir("./127") = 0 [pid 5328] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5328] setpgid(0, 0) = 0 [pid 5070] <... clone resumed>, child_tidptr=0x5555572545d0) = 5328 [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) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5328] munmap(0x7f9a8a8ad000, 262144) = 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", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [pid 5328] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./127", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./127", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./127/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./127/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./127/binderfs") = 0 umount2("./127/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./127/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./127/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./127/file0") = 0 getdents64(3, 0x555557255620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./127") = 0 [ 69.953115][ T5328] loop0: detected capacity change from 0 to 512 [ 69.962952][ T5328] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 69.973406][ T5328] EXT4-fs (loop0): orphan cleanup on readonly fs [ 69.981700][ T5328] EXT4-fs (loop0): 1 truncate cleaned up 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=0x5555572545d0) = 5330 ./strace-static-x86_64: Process 5330 attached [pid 5330] chdir("./128") = 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) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5330] munmap(0x7f9a8a8ad000, 262144) = 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", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [ 70.048279][ T5330] loop0: detected capacity change from 0 to 512 [ 70.057953][ T5330] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 70.067780][ T5330] EXT4-fs (loop0): orphan cleanup on readonly fs [ 70.076964][ T5330] EXT4-fs (loop0): 1 truncate cleaned up [pid 5330] close(4) = 0 [pid 5330] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=3 /* 0.03 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./128/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./128/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./128/binderfs") = 0 umount2("./128/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./128/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./128/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./128/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5332 ./strace-static-x86_64: Process 5332 attached [pid 5332] chdir("./129") = 0 [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) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5332] munmap(0x7f9a8a8ad000, 262144) = 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", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [pid 5332] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=3 /* 0.03 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./129/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./129/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./129/binderfs") = 0 [ 70.163385][ T5332] loop0: detected capacity change from 0 to 512 [ 70.164842][ T5072] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 70.180713][ T5332] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 70.190525][ T5332] EXT4-fs (loop0): orphan cleanup on readonly fs [ 70.199475][ T5332] EXT4-fs (loop0): 1 truncate cleaned up umount2("./129/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./129/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./129/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./129/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5334 ./strace-static-x86_64: Process 5334 attached [pid 5334] chdir("./130") = 0 [pid 5334] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5334] setpgid(0, 0) = 0 [pid 5334] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5334] write(3, "1000", 4) = 4 [pid 5334] close(3) = 0 [pid 5334] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5334] memfd_create("syzkaller", 0) = 3 [pid 5334] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5334] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5334] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5334] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5334] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5334] close(3) = 0 [pid 5334] mkdir("./file0", 0777) = 0 [pid 5334] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5334] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5334] chdir("./file0") = 0 [pid 5334] ioctl(4, LOOP_CLR_FD) = 0 [pid 5334] close(4) = 0 [pid 5334] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5334] exit_group(0) = ? [pid 5334] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5334, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- umount2("./130", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./130", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./130/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./130/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./130/binderfs") = 0 umount2("./130/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./130/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./130/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./130/file0") = 0 getdents64(3, 0x555557255620 /* 0 entries */, 32768) = 0 close(3) = 0 [ 70.267530][ T5334] loop0: detected capacity change from 0 to 512 [ 70.276047][ T5334] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 70.286548][ T5334] EXT4-fs (loop0): orphan cleanup on readonly fs [ 70.296421][ T5334] EXT4-fs (loop0): 1 truncate cleaned up rmdir("./130") = 0 mkdir("./131", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_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 5336 attached , child_tidptr=0x5555572545d0) = 5336 [pid 5336] chdir("./131") = 0 [pid 5336] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5336] setpgid(0, 0) = 0 [pid 5336] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5336] write(3, "1000", 4) = 4 [pid 5336] close(3) = 0 [pid 5336] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5336] memfd_create("syzkaller", 0) = 3 [pid 5336] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5336] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5336] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5336] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5336] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5336] close(3) = 0 [pid 5336] mkdir("./file0", 0777) = 0 [pid 5336] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5336] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5336] chdir("./file0") = 0 [pid 5336] ioctl(4, LOOP_CLR_FD) = 0 [pid 5336] close(4) = 0 [pid 5336] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5336] exit_group(0) = ? [pid 5336] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5336, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./131", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./131", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./131/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./131/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./131/binderfs") = 0 umount2("./131/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./131/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./131/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./131/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5338 ./strace-static-x86_64: Process 5338 attached [ 70.363426][ T5336] loop0: detected capacity change from 0 to 512 [ 70.373091][ T5336] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 70.383276][ T5336] EXT4-fs (loop0): orphan cleanup on readonly fs [ 70.392119][ T5336] EXT4-fs (loop0): 1 truncate cleaned up [pid 5338] chdir("./132") = 0 [pid 5338] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5338] setpgid(0, 0) = 0 [pid 5338] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5338] write(3, "1000", 4) = 4 [pid 5338] close(3) = 0 [pid 5338] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5338] memfd_create("syzkaller", 0) = 3 [pid 5338] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5338] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5338] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5338] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5338] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5338] close(3) = 0 [pid 5338] mkdir("./file0", 0777) = 0 [pid 5338] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5338] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5338] chdir("./file0") = 0 [pid 5338] ioctl(4, LOOP_CLR_FD) = 0 [pid 5338] close(4) = 0 [pid 5338] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5338] exit_group(0) = ? [pid 5338] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5338, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./132/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./132/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./132/binderfs") = 0 umount2("./132/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./132/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./132/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./132/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5340 ./strace-static-x86_64: Process 5340 attached [pid 5340] chdir("./133") = 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) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5340] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5340] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 70.454298][ T5338] loop0: detected capacity change from 0 to 512 [ 70.464434][ T5338] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 70.474271][ T5338] EXT4-fs (loop0): orphan cleanup on readonly fs [ 70.483090][ T5338] EXT4-fs (loop0): 1 truncate cleaned up [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", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [pid 5340] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=4 /* 0.04 s */} --- umount2("./133", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./133", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./133/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./133/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./133/binderfs") = 0 umount2("./133/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./133/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./133/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./133/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5342 ./strace-static-x86_64: Process 5342 attached [pid 5342] chdir("./134") = 0 [pid 5342] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [ 70.533071][ T5340] loop0: detected capacity change from 0 to 512 [ 70.542800][ T5340] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 70.552921][ T5340] EXT4-fs (loop0): orphan cleanup on readonly fs [ 70.562228][ T5340] EXT4-fs (loop0): 1 truncate cleaned up [pid 5342] setpgid(0, 0) = 0 [pid 5342] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5342] write(3, "1000", 4) = 4 [pid 5342] close(3) = 0 [pid 5342] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5342] memfd_create("syzkaller", 0) = 3 [pid 5342] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5342] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5342] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5342] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5342] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5342] close(3) = 0 [pid 5342] mkdir("./file0", 0777) = 0 [pid 5342] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5342] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5342] chdir("./file0") = 0 [pid 5342] ioctl(4, LOOP_CLR_FD) = 0 [pid 5342] close(4) = 0 [pid 5342] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5342] exit_group(0) = ? [pid 5342] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5342, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./134", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./134", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./134/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./134/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./134/binderfs") = 0 umount2("./134/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./134/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./134/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./134/file0") = 0 getdents64(3, 0x555557255620 /* 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) = 0 [ 70.625621][ T5342] loop0: detected capacity change from 0 to 512 [ 70.633717][ T5342] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 70.644403][ T5342] EXT4-fs (loop0): orphan cleanup on readonly fs [ 70.653619][ T5342] EXT4-fs (loop0): 1 truncate cleaned up close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5344 attached [pid 5344] chdir("./135" [pid 5070] <... clone resumed>, child_tidptr=0x5555572545d0) = 5344 [pid 5344] <... chdir resumed>) = 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 [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) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5344] munmap(0x7f9a8a8ad000, 262144) = 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", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [pid 5344] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./135", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./135", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./135/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./135/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./135/binderfs") = 0 umount2("./135/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./135/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./135/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [ 70.720238][ T5344] loop0: detected capacity change from 0 to 512 [ 70.729847][ T5344] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 70.739687][ T5344] EXT4-fs (loop0): orphan cleanup on readonly fs [ 70.748505][ T5344] EXT4-fs (loop0): 1 truncate cleaned up getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./135/file0") = 0 getdents64(3, 0x555557255620 /* 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) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555572545d0) = 5346 ./strace-static-x86_64: Process 5346 attached [pid 5346] chdir("./136") = 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) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5346] munmap(0x7f9a8a8ad000, 262144) = 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", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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 [pid 5346] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=3 /* 0.03 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./136/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./136/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./136/binderfs") = 0 umount2("./136/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./136/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./136/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./136/file0") = 0 getdents64(3, 0x555557255620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./136") = 0 [ 70.822546][ T5346] loop0: detected capacity change from 0 to 512 [ 70.832214][ T5346] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 70.842074][ T5346] EXT4-fs (loop0): orphan cleanup on readonly fs [ 70.850880][ T5346] EXT4-fs (loop0): 1 truncate cleaned up 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=0x5555572545d0) = 5348 ./strace-static-x86_64: Process 5348 attached [pid 5348] chdir("./137") = 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) = 0x7f9a8a8ad000 [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"..., 262144) = 262144 [pid 5348] munmap(0x7f9a8a8ad000, 262144) = 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", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 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] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [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=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./137", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./137", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./137/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./137/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./137/binderfs") = 0 umount2("./137/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./137/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./137/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 [ 70.918095][ T5348] loop0: detected capacity change from 0 to 512 [ 70.926214][ T5348] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 70.936569][ T5348] EXT4-fs (loop0): orphan cleanup on readonly fs [ 70.945813][ T5348] EXT4-fs (loop0): 1 truncate cleaned up getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./137/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5350 ./strace-static-x86_64: Process 5350 attached [pid 5350] chdir("./138") = 0 [pid 5350] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5350] setpgid(0, 0) = 0 [pid 5350] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5350] write(3, "1000", 4) = 4 [pid 5350] close(3) = 0 [pid 5350] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5350] memfd_create("syzkaller", 0) = 3 [pid 5350] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5350] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5350] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5350] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5350] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5350] close(3) = 0 [pid 5350] mkdir("./file0", 0777) = 0 [pid 5350] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5350] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5350] chdir("./file0") = 0 [pid 5350] ioctl(4, LOOP_CLR_FD) = 0 [pid 5350] close(4) = 0 [pid 5350] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5350] exit_group(0) = ? [pid 5350] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5350, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./138/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./138/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./138/binderfs") = 0 umount2("./138/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [ 71.015428][ T5350] loop0: detected capacity change from 0 to 512 [ 71.023763][ T5350] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 71.033620][ T5350] EXT4-fs (loop0): orphan cleanup on readonly fs [ 71.043008][ T5350] EXT4-fs (loop0): 1 truncate cleaned up umount2("./138/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./138/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./138/file0") = 0 getdents64(3, 0x555557255620 /* 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./strace-static-x86_64: Process 5352 attached [pid 5352] chdir("./139") = 0 [pid 5352] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5352] setpgid(0, 0) = 0 [pid 5352] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5352] write(3, "1000", 4) = 4 [pid 5352] close(3) = 0 [pid 5352] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5352] memfd_create("syzkaller", 0) = 3 [pid 5352] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5070] <... clone resumed>, child_tidptr=0x5555572545d0) = 5352 [pid 5352] <... mmap resumed>) = 0x7f9a8a8ad000 [pid 5352] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5352] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5352] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5352] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5352] close(3) = 0 [pid 5352] mkdir("./file0", 0777) = 0 [ 71.118578][ T5352] loop0: detected capacity change from 0 to 512 [ 71.126777][ T5352] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 71.138079][ T5352] EXT4-fs (loop0): orphan cleanup on readonly fs [ 71.147298][ T5352] EXT4-fs (loop0): 1 truncate cleaned up [pid 5352] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5352] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5352] chdir("./file0") = 0 [pid 5352] ioctl(4, LOOP_CLR_FD) = 0 [pid 5352] close(4) = 0 [pid 5352] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5352] exit_group(0) = ? [pid 5352] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5352, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- umount2("./139", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./139", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./139/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./139/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./139/binderfs") = 0 umount2("./139/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./139/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./139/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./139/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5354 ./strace-static-x86_64: Process 5354 attached [pid 5354] chdir("./140") = 0 [pid 5354] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5354] setpgid(0, 0) = 0 [pid 5354] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5354] write(3, "1000", 4) = 4 [pid 5354] close(3) = 0 [pid 5354] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5354] memfd_create("syzkaller", 0) = 3 [pid 5354] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5354] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5354] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5354] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5354] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5354] close(3) = 0 [pid 5354] mkdir("./file0", 0777) = 0 [pid 5354] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5354] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5354] chdir("./file0") = 0 [pid 5354] ioctl(4, LOOP_CLR_FD) = 0 [pid 5354] close(4) = 0 [pid 5354] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5354] exit_group(0) = ? [pid 5354] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5354, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- umount2("./140", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./140", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./140/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./140/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./140/binderfs") = 0 umount2("./140/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./140/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./140/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./140/file0") = 0 getdents64(3, 0x555557255620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./140") = 0 mkdir("./141", 0777) = 0 [ 71.249144][ T5354] loop0: detected capacity change from 0 to 512 [ 71.258512][ T5354] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 71.268941][ T5354] EXT4-fs (loop0): orphan cleanup on readonly fs [ 71.277509][ T5354] EXT4-fs (loop0): 1 truncate cleaned up openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555572545d0) = 5356 ./strace-static-x86_64: Process 5356 attached [pid 5356] chdir("./141") = 0 [pid 5356] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5356] setpgid(0, 0) = 0 [pid 5356] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5356] write(3, "1000", 4) = 4 [pid 5356] close(3) = 0 [pid 5356] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5356] memfd_create("syzkaller", 0) = 3 [pid 5356] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5356] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5356] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5356] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5356] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5356] close(3) = 0 [pid 5356] mkdir("./file0", 0777) = 0 [pid 5356] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5356] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5356] chdir("./file0") = 0 [pid 5356] ioctl(4, LOOP_CLR_FD) = 0 [pid 5356] close(4) = 0 [pid 5356] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5356] exit_group(0) = ? [pid 5356] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5356, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./141", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./141", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./141/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./141/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./141/binderfs") = 0 umount2("./141/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./141/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./141/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./141/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5358 ./strace-static-x86_64: Process 5358 attached [pid 5358] chdir("./142") = 0 [pid 5358] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5358] setpgid(0, 0) = 0 [pid 5358] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5358] write(3, "1000", 4) = 4 [pid 5358] close(3) = 0 [pid 5358] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5358] memfd_create("syzkaller", 0) = 3 [pid 5358] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5358] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5358] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5358] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 71.346021][ T5356] loop0: detected capacity change from 0 to 512 [ 71.354630][ T5356] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 71.364818][ T5356] EXT4-fs (loop0): orphan cleanup on readonly fs [ 71.373496][ T5356] EXT4-fs (loop0): 1 truncate cleaned up [pid 5358] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5358] close(3) = 0 [pid 5358] mkdir("./file0", 0777) = 0 [pid 5358] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5358] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5358] chdir("./file0") = 0 [pid 5358] ioctl(4, LOOP_CLR_FD) = 0 [pid 5358] close(4) = 0 [pid 5358] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5358] exit_group(0) = ? [pid 5358] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5358, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./142/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./142/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./142/binderfs") = 0 umount2("./142/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./142/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./142/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./142/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5360 [ 71.418880][ T5358] loop0: detected capacity change from 0 to 512 [ 71.427745][ T5358] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 71.438442][ T5358] EXT4-fs (loop0): orphan cleanup on readonly fs [ 71.447296][ T5358] EXT4-fs (loop0): 1 truncate cleaned up ./strace-static-x86_64: Process 5360 attached [pid 5360] chdir("./143") = 0 [pid 5360] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5360] setpgid(0, 0) = 0 [pid 5360] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5360] write(3, "1000", 4) = 4 [pid 5360] close(3) = 0 [pid 5360] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5360] memfd_create("syzkaller", 0) = 3 [pid 5360] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5360] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5360] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5360] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5360] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5360] close(3) = 0 [pid 5360] mkdir("./file0", 0777) = 0 [pid 5360] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5360] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5360] chdir("./file0") = 0 [pid 5360] ioctl(4, LOOP_CLR_FD) = 0 [pid 5360] close(4) = 0 [pid 5360] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5360] exit_group(0) = ? [pid 5360] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5360, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./143", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./143", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./143/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./143/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./143/binderfs") = 0 umount2("./143/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./143/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./143/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./143/file0") = 0 getdents64(3, 0x555557255620 /* 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) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555572545d0) = 5362 ./strace-static-x86_64: Process 5362 attached [pid 5362] chdir("./144") = 0 [pid 5362] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5362] setpgid(0, 0) = 0 [pid 5362] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5362] write(3, "1000", 4) = 4 [pid 5362] close(3) = 0 [pid 5362] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5362] memfd_create("syzkaller", 0) = 3 [pid 5362] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [ 71.511942][ T5360] loop0: detected capacity change from 0 to 512 [ 71.520793][ T5360] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 71.531189][ T5360] EXT4-fs (loop0): orphan cleanup on readonly fs [ 71.539707][ T5360] EXT4-fs (loop0): 1 truncate cleaned up [pid 5362] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5362] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5362] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5362] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5362] close(3) = 0 [pid 5362] mkdir("./file0", 0777) = 0 [pid 5362] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5362] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5362] chdir("./file0") = 0 [pid 5362] ioctl(4, LOOP_CLR_FD) = 0 [pid 5362] close(4) = 0 [pid 5362] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5362] exit_group(0) = ? [pid 5362] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5362, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- umount2("./144", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./144", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./144/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./144/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./144/binderfs") = 0 umount2("./144/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./144/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./144/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./144/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5364 ./strace-static-x86_64: Process 5364 attached [pid 5364] chdir("./145") = 0 [pid 5364] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5364] setpgid(0, 0) = 0 [pid 5364] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5364] write(3, "1000", 4) = 4 [pid 5364] close(3) = 0 [pid 5364] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5364] memfd_create("syzkaller", 0) = 3 [pid 5364] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5364] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [ 71.596869][ T5362] loop0: detected capacity change from 0 to 512 [ 71.606002][ T5362] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 71.616360][ T5362] EXT4-fs (loop0): orphan cleanup on readonly fs [ 71.625286][ T5362] EXT4-fs (loop0): 1 truncate cleaned up [pid 5364] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5364] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5364] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5364] close(3) = 0 [pid 5364] mkdir("./file0", 0777) = 0 [pid 5364] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5364] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5364] chdir("./file0") = 0 [pid 5364] ioctl(4, LOOP_CLR_FD) = 0 [pid 5364] close(4) = 0 [pid 5364] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5364] exit_group(0) = ? [pid 5364] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5364, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./145/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./145/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./145/binderfs") = 0 umount2("./145/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./145/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./145/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./145/file0") = 0 getdents64(3, 0x555557255620 /* 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=0x5555572545d0) = 5366 ./strace-static-x86_64: Process 5366 attached [pid 5366] chdir("./146") = 0 [pid 5366] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5366] setpgid(0, 0) = 0 [pid 5366] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5366] write(3, "1000", 4) = 4 [pid 5366] close(3) = 0 [pid 5366] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5366] memfd_create("syzkaller", 0) = 3 [pid 5366] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [ 71.673041][ T5364] loop0: detected capacity change from 0 to 512 [ 71.682098][ T5364] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 71.691959][ T5364] EXT4-fs (loop0): orphan cleanup on readonly fs [ 71.700475][ T5364] EXT4-fs (loop0): 1 truncate cleaned up [pid 5366] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5366] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5366] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5366] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5366] close(3) = 0 [pid 5366] mkdir("./file0", 0777) = 0 [pid 5366] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV, "nojournal_checksum,nodelalloc,acl,abort,discard,bsddf,grpjquota=,usrquota,inode_readahead_blks=0x000"...) = 0 [pid 5366] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5366] chdir("./file0") = 0 [pid 5366] ioctl(4, LOOP_CLR_FD) = 0 [pid 5366] close(4) = 0 [pid 5366] ioctl(-1, BTRFS_IOC_RM_DEV, NULL) = -1 EBADF (Bad file descriptor) [pid 5366] exit_group(0) = ? [pid 5366] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5366, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 [ 71.756365][ T5366] loop0: detected capacity change from 0 to 512 [ 71.760752][ T5072] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 71.774277][ T5366] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 71.784577][ T5366] EXT4-fs (loop0): orphan cleanup on readonly fs [ 71.794658][ T5366] EXT4-fs (loop0): 1 truncate cleaned up umount2("./146", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./146", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x555557255620 /* 4 entries */, 32768) = 112 umount2("./146/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./146/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./146/binderfs") = 0 umount2("./146/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./146/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./146/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x55555725d660 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555725d660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./146/file0") = 0 getdents64(3, 0x555557255620 /* 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, child_tidptr=0x5555572545d0) = 5368 ./strace-static-x86_64: Process 5368 attached [pid 5368] chdir("./147") = 0 [pid 5368] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5368] setpgid(0, 0) = 0 [pid 5368] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5368] write(3, "1000", 4) = 4 [pid 5368] close(3) = 0 [pid 5368] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5368] memfd_create("syzkaller", 0) = 3 [pid 5368] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9a8a8ad000 [pid 5368] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5368] munmap(0x7f9a8a8ad000, 262144) = 0 [pid 5368] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4