./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor335395822 <...> DUID 00:04:dd:0f:a4:e5:cb:b8:04:95:2f:30:92:03:b3:b6:0d:bc forked to background, child pid 4645 [ 31.152206][ T4646] 8021q: adding VLAN 0 to HW filter on device bond0 [ 31.167446][ T4646] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.24' (ECDSA) to the list of known hosts. execve("./syz-executor335395822", ["./syz-executor335395822"], 0x7ffde6268150 /* 10 vars */) = 0 brk(NULL) = 0x5555560a1000 brk(0x5555560a1c40) = 0x5555560a1c40 arch_prctl(ARCH_SET_FS, 0x5555560a1300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor335395822", 4096) = 27 brk(0x5555560c2c40) = 0x5555560c2c40 brk(0x5555560c3000) = 0x5555560c3000 mprotect(0x7f12fabcf000, 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() = 5074 mkdir("./syzkaller.aqLhdR", 0700) = 0 chmod("./syzkaller.aqLhdR", 0777) = 0 chdir("./syzkaller.aqLhdR") = 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=0x5555560a15d0) = 5075 ./strace-static-x86_64: Process 5075 attached [pid 5075] chdir("./0") = 0 [pid 5075] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5075] setpgid(0, 0) = 0 [pid 5075] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5075] write(3, "1000", 4) = 4 [pid 5075] close(3) = 0 [pid 5075] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5075] memfd_create("syzkaller", 0) = 3 [pid 5075] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5075] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5075] munmap(0x7f12f2714000, 262144) = 0 [pid 5075] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5075] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5075] close(3) = 0 [pid 5075] mkdir("./file0", 0777) = 0 syzkaller login: [ 52.267781][ T5075] loop0: detected capacity change from 0 to 512 [ 52.278960][ T5075] ======================================================= [ 52.278960][ T5075] WARNING: The mand mount option has been deprecated and [ 52.278960][ T5075] and is ignored by this kernel. Remove the mand [ 52.278960][ T5075] option from the mount to silence this warning. [ 52.278960][ T5075] ======================================================= [ 52.319535][ T5075] EXT4-fs (loop0): orphan cleanup on readonly fs [ 52.335058][ T5075] EXT4-fs (loop0): 1 truncate cleaned up [pid 5075] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5075] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5075] ioctl(4, LOOP_CLR_FD) = 0 [pid 5075] close(4) = 0 [pid 5075] exit_group(0) = ? [pid 5075] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5075, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 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, 0x5555560a2620 /* 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 [ 52.366399][ T5075] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./0/file0") = 0 getdents64(3, 0x5555560a2620 /* 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./strace-static-x86_64: Process 5078 attached [pid 5078] chdir("./1") = 0 [pid 5078] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5078] setpgid(0, 0) = 0 [pid 5078] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5078] write(3, "1000", 4) = 4 [pid 5078] close(3) = 0 [pid 5078] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5078] memfd_create("syzkaller", 0) = 3 [pid 5078] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5074] <... clone resumed>, child_tidptr=0x5555560a15d0) = 5078 [pid 5078] <... mmap resumed>) = 0x7f12f2714000 [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(0x7f12f2714000, 262144) = 0 [pid 5078] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 52.410059][ T5074] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5078] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5078] close(3) = 0 [pid 5078] mkdir("./file0", 0777) = 0 [pid 5078] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5078] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5078] ioctl(4, LOOP_CLR_FD) = 0 [pid 5078] close(4) = 0 [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 */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x5555560a2620 /* 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 [ 52.470546][ T5078] loop0: detected capacity change from 0 to 512 [ 52.482645][ T5078] EXT4-fs (loop0): orphan cleanup on readonly fs [ 52.494398][ T5078] EXT4-fs (loop0): 1 truncate cleaned up [ 52.508271][ T5078] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./1/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5080 ./strace-static-x86_64: Process 5080 attached [pid 5080] chdir("./2") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 262144) = 0 [ 52.550488][ T5074] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [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 [ 52.591793][ T5080] loop0: detected capacity change from 0 to 512 [ 52.605696][ T5080] EXT4-fs (loop0): orphan cleanup on readonly fs [ 52.617326][ T5080] EXT4-fs (loop0): 1 truncate cleaned up [ 52.630131][ T5080] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [pid 5080] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5080] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5080] ioctl(4, LOOP_CLR_FD) = 0 [pid 5080] close(4) = 0 [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=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./2/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5082 ./strace-static-x86_64: Process 5082 attached [pid 5082] chdir("./3") = 0 [pid 5082] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5082] setpgid(0, 0) = 0 [pid 5082] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5082] write(3, "1000", 4) = 4 [pid 5082] close(3) = 0 [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) = 0x7f12f2714000 [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(0x7f12f2714000, 262144) = 0 [pid 5082] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 52.673606][ T5074] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [ 52.713287][ T5082] loop0: detected capacity change from 0 to 512 [pid 5082] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5082] close(3) = 0 [pid 5082] mkdir("./file0", 0777) = 0 [pid 5082] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5082] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5082] ioctl(4, LOOP_CLR_FD) = 0 [pid 5082] close(4) = 0 [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=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./3", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./3", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x5555560a2620 /* 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 [ 52.718869][ T5076] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 52.734907][ T5082] EXT4-fs (loop0): orphan cleanup on readonly fs [ 52.745287][ T5082] EXT4-fs (loop0): 1 truncate cleaned up [ 52.758260][ T5082] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./3/file0") = 0 getdents64(3, 0x5555560a2620 /* 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./strace-static-x86_64: Process 5084 attached [pid 5084] chdir("./4") = 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) = 0x7f12f2714000 [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 [pid 5074] <... clone resumed>, child_tidptr=0x5555560a15d0) = 5084 [pid 5084] <... write resumed>) = 262144 [pid 5084] munmap(0x7f12f2714000, 262144) = 0 [pid 5084] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 52.794395][ T5074] 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 [pid 5084] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5084] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5084] ioctl(4, LOOP_CLR_FD) = 0 [pid 5084] close(4) = 0 [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 */} --- 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, 0x5555560a2620 /* 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 [ 52.840536][ T5084] loop0: detected capacity change from 0 to 512 [ 52.852257][ T5084] EXT4-fs (loop0): orphan cleanup on readonly fs [ 52.862324][ T5084] EXT4-fs (loop0): 1 truncate cleaned up [ 52.877021][ T5084] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./4/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5086 ./strace-static-x86_64: Process 5086 attached [pid 5086] chdir("./5") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 262144) = 0 [pid 5086] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 52.914279][ T5074] 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 [ 52.962306][ T5086] loop0: detected capacity change from 0 to 512 [ 52.973890][ T5086] EXT4-fs (loop0): orphan cleanup on readonly fs [ 52.984529][ T5086] EXT4-fs (loop0): 1 truncate cleaned up [pid 5086] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5086] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5086] ioctl(4, LOOP_CLR_FD) = 0 [pid 5086] close(4) = 0 [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=3 /* 0.03 s */} --- 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, 0x5555560a2620 /* 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 [ 53.016822][ T5086] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./5/file0") = 0 getdents64(3, 0x5555560a2620 /* 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./strace-static-x86_64: Process 5088 attached , child_tidptr=0x5555560a15d0) = 5088 [pid 5088] chdir("./6") = 0 [pid 5088] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5088] setpgid(0, 0) = 0 [pid 5088] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5088] write(3, "1000", 4) = 4 [pid 5088] close(3) = 0 [pid 5088] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5088] memfd_create("syzkaller", 0) = 3 [pid 5088] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [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(0x7f12f2714000, 262144) = 0 [pid 5088] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 53.063346][ T5074] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5088] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5088] close(3) = 0 [pid 5088] mkdir("./file0", 0777) = 0 [ 53.123667][ T5088] loop0: detected capacity change from 0 to 512 [ 53.136556][ T5088] EXT4-fs (loop0): orphan cleanup on readonly fs [ 53.146401][ T5088] EXT4-fs (loop0): 1 truncate cleaned up [pid 5088] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5088] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5088] ioctl(4, LOOP_CLR_FD) = 0 [pid 5088] close(4) = 0 [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 */} --- 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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./6/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./6") = 0 mkdir("./7", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5090 ./strace-static-x86_64: Process 5090 attached [pid 5090] chdir("./7") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 262144) = 0 [pid 5090] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 53.176468][ T5088] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 53.215672][ T5074] 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 [pid 5090] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5090] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5090] ioctl(4, LOOP_CLR_FD) = 0 [pid 5090] close(4) = 0 [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 */} --- 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, 0x5555560a2620 /* 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 [ 53.252567][ T5090] loop0: detected capacity change from 0 to 512 [ 53.264456][ T5090] EXT4-fs (loop0): orphan cleanup on readonly fs [ 53.274646][ T5090] EXT4-fs (loop0): 1 truncate cleaned up [ 53.288154][ T5090] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./7/file0") = 0 getdents64(3, 0x5555560a2620 /* 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 5092 attached [pid 5092] chdir("./8") = 0 [pid 5092] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5092] setpgid(0, 0) = 0 [pid 5074] <... clone resumed>, child_tidptr=0x5555560a15d0) = 5092 [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) = 0x7f12f2714000 [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(0x7f12f2714000, 262144) = 0 [pid 5092] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 53.316962][ T5074] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5092] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5092] close(3) = 0 [pid 5092] mkdir("./file0", 0777) = 0 [ 53.374655][ T5092] loop0: detected capacity change from 0 to 512 [ 53.386313][ T5092] EXT4-fs (loop0): orphan cleanup on readonly fs [ 53.396025][ T5092] EXT4-fs (loop0): 1 truncate cleaned up [pid 5092] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5092] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5092] ioctl(4, LOOP_CLR_FD) = 0 [pid 5092] close(4) = 0 [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=4 /* 0.04 s */} --- 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, 0x5555560a2620 /* 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 [ 53.426633][ T5092] 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./8/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5094 ./strace-static-x86_64: Process 5094 attached [pid 5094] chdir("./9") = 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) = 0x7f12f2714000 [ 53.472373][ T5074] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [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(0x7f12f2714000, 262144) = 0 [pid 5094] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5094] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5094] close(3) = 0 [pid 5094] mkdir("./file0", 0777) = 0 [pid 5094] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5094] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5094] ioctl(4, LOOP_CLR_FD) = 0 [pid 5094] close(4) = 0 [pid 5094] exit_group(0) = ? [ 53.538504][ T5094] loop0: detected capacity change from 0 to 512 [ 53.550745][ T5094] EXT4-fs (loop0): orphan cleanup on readonly fs [ 53.561604][ T5094] EXT4-fs (loop0): 1 truncate cleaned up [ 53.576559][ T5094] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [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=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./9", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./9", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./9/file0") = 0 getdents64(3, 0x5555560a2620 /* 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, child_tidptr=0x5555560a15d0) = 5096 ./strace-static-x86_64: Process 5096 attached [pid 5096] chdir("./10") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 262144) = 0 [ 53.610945][ T5074] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [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 [ 53.678720][ T5096] loop0: detected capacity change from 0 to 512 [ 53.691373][ T5096] EXT4-fs (loop0): orphan cleanup on readonly fs [ 53.702388][ T5096] EXT4-fs (loop0): 1 truncate cleaned up [pid 5096] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5096] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5096] ioctl(4, LOOP_CLR_FD) = 0 [pid 5096] close(4) = 0 [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=3 /* 0.03 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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./10/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./10") = 0 mkdir("./11", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5098 ./strace-static-x86_64: Process 5098 attached [pid 5098] chdir("./11") = 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) = 0x7f12f2714000 [ 53.736376][ T5096] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 53.765855][ T5074] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [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(0x7f12f2714000, 262144) = 0 [pid 5098] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5098] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5098] close(3) = 0 [pid 5098] mkdir("./file0", 0777) = 0 [pid 5098] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5098] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5098] ioctl(4, LOOP_CLR_FD) = 0 [pid 5098] close(4) = 0 [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("./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, 0x5555560a2620 /* 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 [ 53.822020][ T5098] loop0: detected capacity change from 0 to 512 [ 53.834991][ T5098] EXT4-fs (loop0): orphan cleanup on readonly fs [ 53.845063][ T5098] EXT4-fs (loop0): 1 truncate cleaned up [ 53.859176][ T5098] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./11/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5100 ./strace-static-x86_64: Process 5100 attached [pid 5100] chdir("./12") = 0 [pid 5100] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5100] setpgid(0, 0) = 0 [pid 5100] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5100] write(3, "1000", 4) = 4 [pid 5100] close(3) = 0 [pid 5100] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5100] memfd_create("syzkaller", 0) = 3 [pid 5100] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5100] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5100] munmap(0x7f12f2714000, 262144) = 0 [pid 5100] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 53.888254][ T5074] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5100] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5100] close(3) = 0 [pid 5100] mkdir("./file0", 0777) = 0 [ 53.946215][ T5100] loop0: detected capacity change from 0 to 512 [ 53.958628][ T5100] EXT4-fs (loop0): orphan cleanup on readonly fs [ 53.969209][ T5100] EXT4-fs (loop0): 1 truncate cleaned up [pid 5100] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5100] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5100] ioctl(4, LOOP_CLR_FD) = 0 [pid 5100] close(4) = 0 [pid 5100] exit_group(0) = ? [pid 5100] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5100, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./12", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./12", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./12/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5102 ./strace-static-x86_64: Process 5102 attached [pid 5102] chdir("./13") = 0 [pid 5102] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5102] setpgid(0, 0) = 0 [pid 5102] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5102] write(3, "1000", 4) = 4 [pid 5102] close(3) = 0 [pid 5102] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5102] memfd_create("syzkaller", 0) = 3 [ 53.996508][ T5100] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 54.026905][ T5074] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5102] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5102] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5102] munmap(0x7f12f2714000, 262144) = 0 [pid 5102] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5102] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5102] close(3) = 0 [pid 5102] mkdir("./file0", 0777) = 0 [ 54.084658][ T5102] loop0: detected capacity change from 0 to 512 [ 54.098734][ T5102] EXT4-fs (loop0): orphan cleanup on readonly fs [ 54.108933][ T5102] EXT4-fs (loop0): 1 truncate cleaned up [pid 5102] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5102] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5102] ioctl(4, LOOP_CLR_FD) = 0 [pid 5102] close(4) = 0 [pid 5102] exit_group(0) = ? [pid 5102] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5102, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./13/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5104 ./strace-static-x86_64: Process 5104 attached [pid 5104] chdir("./14") = 0 [pid 5104] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5104] setpgid(0, 0) = 0 [pid 5104] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5104] write(3, "1000", 4) = 4 [pid 5104] close(3) = 0 [pid 5104] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5104] memfd_create("syzkaller", 0) = 3 [pid 5104] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [ 54.136781][ T5102] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 54.170087][ T5074] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5104] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5104] munmap(0x7f12f2714000, 262144) = 0 [pid 5104] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5104] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5104] close(3) = 0 [pid 5104] mkdir("./file0", 0777) = 0 [ 54.224009][ T5104] loop0: detected capacity change from 0 to 512 [ 54.238286][ T5104] EXT4-fs (loop0): orphan cleanup on readonly fs [ 54.248762][ T5104] EXT4-fs (loop0): 1 truncate cleaned up [pid 5104] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5104] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5104] ioctl(4, LOOP_CLR_FD) = 0 [pid 5104] close(4) = 0 [pid 5104] exit_group(0) = ? [pid 5104] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5104, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./14/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5106 ./strace-static-x86_64: Process 5106 attached [pid 5106] chdir("./15") = 0 [pid 5106] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5106] setpgid(0, 0) = 0 [pid 5106] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5106] write(3, "1000", 4) = 4 [pid 5106] close(3) = 0 [pid 5106] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5106] memfd_create("syzkaller", 0) = 3 [pid 5106] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5106] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5106] munmap(0x7f12f2714000, 262144) = 0 [pid 5106] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 54.276642][ T5104] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 54.305747][ T5074] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5106] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5106] close(3) = 0 [pid 5106] mkdir("./file0", 0777) = 0 [pid 5106] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5106] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5106] ioctl(4, LOOP_CLR_FD) = 0 [pid 5106] close(4) = 0 [pid 5106] exit_group(0) = ? [pid 5106] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5106, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./15", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./15", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x5555560a2620 /* 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 [ 54.353036][ T5106] loop0: detected capacity change from 0 to 512 [ 54.364711][ T5106] EXT4-fs (loop0): orphan cleanup on readonly fs [ 54.375322][ T5106] EXT4-fs (loop0): 1 truncate cleaned up [ 54.388348][ T5106] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./15/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5108 ./strace-static-x86_64: Process 5108 attached [pid 5108] chdir("./16") = 0 [pid 5108] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5108] setpgid(0, 0) = 0 [pid 5108] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5108] write(3, "1000", 4) = 4 [pid 5108] close(3) = 0 [pid 5108] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5108] memfd_create("syzkaller", 0) = 3 [pid 5108] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5108] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5108] munmap(0x7f12f2714000, 262144) = 0 [pid 5108] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 54.419919][ T5074] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5108] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5108] close(3) = 0 [pid 5108] mkdir("./file0", 0777) = 0 [ 54.465057][ T5108] loop0: detected capacity change from 0 to 512 [ 54.478124][ T5108] EXT4-fs (loop0): orphan cleanup on readonly fs [ 54.489844][ T5108] EXT4-fs (loop0): 1 truncate cleaned up [pid 5108] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5108] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5108] ioctl(4, LOOP_CLR_FD) = 0 [pid 5108] close(4) = 0 [pid 5108] exit_group(0) = ? [pid 5108] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5108, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- 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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./16/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5110 ./strace-static-x86_64: Process 5110 attached [pid 5110] chdir("./17") = 0 [pid 5110] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5110] setpgid(0, 0) = 0 [pid 5110] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5110] write(3, "1000", 4) = 4 [pid 5110] close(3) = 0 [pid 5110] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5110] memfd_create("syzkaller", 0) = 3 [pid 5110] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5110] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [ 54.517590][ T5108] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 54.539998][ T5074] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5110] munmap(0x7f12f2714000, 262144) = 0 [pid 5110] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5110] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5110] close(3) = 0 [pid 5110] mkdir("./file0", 0777) = 0 [pid 5110] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5110] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5110] ioctl(4, LOOP_CLR_FD) = 0 [pid 5110] close(4) = 0 [pid 5110] exit_group(0) = ? [pid 5110] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5110, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 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, 0x5555560a2620 /* 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 [ 54.600029][ T5110] loop0: detected capacity change from 0 to 512 [ 54.612916][ T5110] EXT4-fs (loop0): orphan cleanup on readonly fs [ 54.623081][ T5110] EXT4-fs (loop0): 1 truncate cleaned up [ 54.636701][ T5110] 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./17/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5112 ./strace-static-x86_64: Process 5112 attached [pid 5112] chdir("./18") = 0 [pid 5112] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5112] setpgid(0, 0) = 0 [pid 5112] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5112] write(3, "1000", 4) = 4 [pid 5112] close(3) = 0 [pid 5112] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5112] memfd_create("syzkaller", 0) = 3 [pid 5112] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5112] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5112] munmap(0x7f12f2714000, 262144) = 0 [pid 5112] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 54.674614][ T5074] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5112] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5112] close(3) = 0 [pid 5112] mkdir("./file0", 0777) = 0 [ 54.718306][ T5112] loop0: detected capacity change from 0 to 512 [ 54.730667][ T5112] EXT4-fs (loop0): orphan cleanup on readonly fs [ 54.740374][ T5112] EXT4-fs (loop0): 1 truncate cleaned up [pid 5112] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5112] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5112] ioctl(4, LOOP_CLR_FD) = 0 [pid 5112] close(4) = 0 [pid 5112] exit_group(0) = ? [pid 5112] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5112, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./18/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5114 ./strace-static-x86_64: Process 5114 attached [pid 5114] chdir("./19") = 0 [pid 5114] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5114] setpgid(0, 0) = 0 [pid 5114] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [ 54.766470][ T5112] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 54.801399][ T5074] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5114] write(3, "1000", 4) = 4 [pid 5114] close(3) = 0 [pid 5114] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5114] memfd_create("syzkaller", 0) = 3 [pid 5114] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5114] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5114] munmap(0x7f12f2714000, 262144) = 0 [pid 5114] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5114] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5114] close(3) = 0 [pid 5114] mkdir("./file0", 0777) = 0 [pid 5114] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5114] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5114] ioctl(4, LOOP_CLR_FD) = 0 [pid 5114] close(4) = 0 [pid 5114] exit_group(0) = ? [pid 5114] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5114, si_uid=0, si_status=0, si_utime=0, si_stime=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, 0x5555560a2620 /* 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 [ 54.860517][ T5114] loop0: detected capacity change from 0 to 512 [ 54.873512][ T5114] EXT4-fs (loop0): orphan cleanup on readonly fs [ 54.883933][ T5114] EXT4-fs (loop0): 1 truncate cleaned up [ 54.896767][ T5114] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./19/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5116 ./strace-static-x86_64: Process 5116 attached [pid 5116] chdir("./20") = 0 [pid 5116] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5116] setpgid(0, 0) = 0 [pid 5116] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5116] write(3, "1000", 4) = 4 [pid 5116] close(3) = 0 [pid 5116] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5116] memfd_create("syzkaller", 0) = 3 [pid 5116] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5116] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5116] munmap(0x7f12f2714000, 262144) = 0 [pid 5116] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 54.929174][ T5074] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5116] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5116] close(3) = 0 [pid 5116] mkdir("./file0", 0777) = 0 [ 54.989199][ T5116] loop0: detected capacity change from 0 to 512 [ 55.002548][ T5116] EXT4-fs (loop0): orphan cleanup on readonly fs [ 55.013093][ T5116] EXT4-fs (loop0): 1 truncate cleaned up [pid 5116] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5116] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5116] ioctl(4, LOOP_CLR_FD) = 0 [pid 5116] close(4) = 0 [pid 5116] exit_group(0) = ? [pid 5116] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5116, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./20/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./20") = 0 mkdir("./21", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5118 ./strace-static-x86_64: Process 5118 attached [pid 5118] chdir("./21") = 0 [pid 5118] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5118] setpgid(0, 0) = 0 [pid 5118] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5118] write(3, "1000", 4) = 4 [pid 5118] close(3) = 0 [pid 5118] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5118] memfd_create("syzkaller", 0) = 3 [pid 5118] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5118] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5118] munmap(0x7f12f2714000, 262144) = 0 [pid 5118] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 55.028261][ T5116] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 55.059339][ T5074] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5118] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5118] close(3) = 0 [pid 5118] mkdir("./file0", 0777) = 0 [ 55.113774][ T5118] loop0: detected capacity change from 0 to 512 [ 55.127827][ T5118] EXT4-fs (loop0): orphan cleanup on readonly fs [ 55.137698][ T5118] EXT4-fs (loop0): 1 truncate cleaned up [pid 5118] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5118] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5118] ioctl(4, LOOP_CLR_FD) = 0 [pid 5118] close(4) = 0 [pid 5118] exit_group(0) = ? [pid 5118] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5118, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./21/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5120 ./strace-static-x86_64: Process 5120 attached [pid 5120] chdir("./22") = 0 [pid 5120] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5120] setpgid(0, 0) = 0 [pid 5120] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5120] write(3, "1000", 4) = 4 [ 55.166471][ T5118] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 55.202408][ T5074] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5120] close(3) = 0 [pid 5120] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5120] memfd_create("syzkaller", 0) = 3 [pid 5120] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5120] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5120] munmap(0x7f12f2714000, 262144) = 0 [pid 5120] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5120] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5120] close(3) = 0 [pid 5120] mkdir("./file0", 0777) = 0 [ 55.257189][ T5120] loop0: detected capacity change from 0 to 512 [ 55.269355][ T5120] EXT4-fs (loop0): orphan cleanup on readonly fs [ 55.280029][ T5120] EXT4-fs (loop0): 1 truncate cleaned up [pid 5120] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5120] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5120] ioctl(4, LOOP_CLR_FD) = 0 [pid 5120] close(4) = 0 [pid 5120] exit_group(0) = ? [pid 5120] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5120, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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, 0x5555560a2620 /* 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 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./22/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5122 ./strace-static-x86_64: Process 5122 attached [pid 5122] chdir("./23") = 0 [pid 5122] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5122] setpgid(0, 0) = 0 [pid 5122] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5122] write(3, "1000", 4) = 4 [pid 5122] close(3) = 0 [pid 5122] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5122] memfd_create("syzkaller", 0) = 3 [pid 5122] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5122] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5122] munmap(0x7f12f2714000, 262144) = 0 [pid 5122] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 55.306685][ T5120] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 55.333319][ T5074] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5122] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5122] close(3) = 0 [pid 5122] mkdir("./file0", 0777) = 0 [pid 5122] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5122] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5122] ioctl(4, LOOP_CLR_FD) = 0 [pid 5122] close(4) = 0 [pid 5122] exit_group(0) = ? [pid 5122] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5122, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- 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, 0x5555560a2620 /* 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 [ 55.383785][ T5122] loop0: detected capacity change from 0 to 512 [ 55.397694][ T5122] EXT4-fs (loop0): orphan cleanup on readonly fs [ 55.407911][ T5122] EXT4-fs (loop0): 1 truncate cleaned up [ 55.420986][ T5122] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./23/file0") = 0 getdents64(3, 0x5555560a2620 /* 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./strace-static-x86_64: Process 5124 attached , child_tidptr=0x5555560a15d0) = 5124 [pid 5124] chdir("./24") = 0 [pid 5124] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5124] setpgid(0, 0) = 0 [pid 5124] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5124] write(3, "1000", 4) = 4 [pid 5124] close(3) = 0 [pid 5124] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5124] memfd_create("syzkaller", 0) = 3 [pid 5124] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5124] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5124] munmap(0x7f12f2714000, 262144) = 0 [pid 5124] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 55.456053][ T5074] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5124] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5124] close(3) = 0 [pid 5124] mkdir("./file0", 0777) = 0 [ 55.506841][ T5124] loop0: detected capacity change from 0 to 512 [ 55.519849][ T5124] EXT4-fs (loop0): orphan cleanup on readonly fs [ 55.530164][ T5124] EXT4-fs (loop0): 1 truncate cleaned up [pid 5124] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5124] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5124] ioctl(4, LOOP_CLR_FD) = 0 [pid 5124] close(4) = 0 [pid 5124] exit_group(0) = ? [pid 5124] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5124, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- 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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./24/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5126 ./strace-static-x86_64: Process 5126 attached [pid 5126] chdir("./25") = 0 [pid 5126] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5126] setpgid(0, 0) = 0 [pid 5126] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5126] write(3, "1000", 4) = 4 [pid 5126] close(3) = 0 [pid 5126] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5126] memfd_create("syzkaller", 0) = 3 [pid 5126] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5126] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5126] munmap(0x7f12f2714000, 262144) = 0 [pid 5126] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 55.556637][ T5124] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 55.577284][ T5074] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5126] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5126] close(3) = 0 [pid 5126] mkdir("./file0", 0777) = 0 [ 55.628197][ T5126] loop0: detected capacity change from 0 to 512 [ 55.631050][ T5076] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 55.651507][ T5126] EXT4-fs (loop0): orphan cleanup on readonly fs [ 55.661445][ T5126] EXT4-fs (loop0): 1 truncate cleaned up [pid 5126] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5126] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5126] ioctl(4, LOOP_CLR_FD) = 0 [pid 5126] close(4) = 0 [pid 5126] exit_group(0) = ? [pid 5126] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5126, si_uid=0, si_status=0, si_utime=0, si_stime=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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./25/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./25") = 0 mkdir("./26", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5128 ./strace-static-x86_64: Process 5128 attached [pid 5128] chdir("./26") = 0 [pid 5128] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5128] setpgid(0, 0) = 0 [pid 5128] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5128] write(3, "1000", 4) = 4 [pid 5128] close(3) = 0 [pid 5128] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5128] memfd_create("syzkaller", 0) = 3 [pid 5128] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5128] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5128] munmap(0x7f12f2714000, 262144) = 0 [pid 5128] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 55.686875][ T5126] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 55.714473][ T5074] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5128] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5128] close(3) = 0 [pid 5128] mkdir("./file0", 0777) = 0 [ 55.759587][ T5128] loop0: detected capacity change from 0 to 512 [ 55.772657][ T5128] EXT4-fs (loop0): orphan cleanup on readonly fs [ 55.784182][ T5128] EXT4-fs (loop0): 1 truncate cleaned up [pid 5128] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5128] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5128] ioctl(4, LOOP_CLR_FD) = 0 [pid 5128] close(4) = 0 [pid 5128] exit_group(0) = ? [pid 5128] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5128, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- 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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./26/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5130 ./strace-static-x86_64: Process 5130 attached [pid 5130] chdir("./27") = 0 [pid 5130] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5130] setpgid(0, 0) = 0 [pid 5130] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5130] write(3, "1000", 4) = 4 [ 55.816573][ T5128] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 55.851349][ T5074] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5130] close(3) = 0 [pid 5130] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5130] memfd_create("syzkaller", 0) = 3 [pid 5130] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5130] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5130] munmap(0x7f12f2714000, 262144) = 0 [pid 5130] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5130] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5130] close(3) = 0 [pid 5130] mkdir("./file0", 0777) = 0 [pid 5130] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5130] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5130] ioctl(4, LOOP_CLR_FD) = 0 [ 55.908525][ T5130] loop0: detected capacity change from 0 to 512 [ 55.924850][ T5130] EXT4-fs (loop0): orphan cleanup on readonly fs [ 55.934302][ T5130] EXT4-fs (loop0): 1 truncate cleaned up [pid 5130] close(4) = 0 [pid 5130] exit_group(0) = ? [pid 5130] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5130, si_uid=0, si_status=0, si_utime=0, si_stime=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, 0x5555560a2620 /* 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 [ 55.948284][ T5130] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./27/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./27") = 0 mkdir("./28", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5132 ./strace-static-x86_64: Process 5132 attached [pid 5132] chdir("./28") = 0 [pid 5132] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5132] setpgid(0, 0) = 0 [pid 5132] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5132] write(3, "1000", 4) = 4 [pid 5132] close(3) = 0 [pid 5132] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5132] memfd_create("syzkaller", 0) = 3 [pid 5132] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5132] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5132] munmap(0x7f12f2714000, 262144) = 0 [pid 5132] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 55.980233][ T5074] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5132] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5132] close(3) = 0 [pid 5132] mkdir("./file0", 0777) = 0 [ 56.023056][ T5132] loop0: detected capacity change from 0 to 512 [ 56.034574][ T5132] EXT4-fs (loop0): orphan cleanup on readonly fs [ 56.045184][ T5132] EXT4-fs (loop0): 1 truncate cleaned up [pid 5132] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5132] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5132] ioctl(4, LOOP_CLR_FD) = 0 [pid 5132] close(4) = 0 [pid 5132] exit_group(0) = ? [pid 5132] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5132, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- 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, 0x5555560a2620 /* 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 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./28/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5134 ./strace-static-x86_64: Process 5134 attached [pid 5134] chdir("./29") = 0 [pid 5134] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5134] setpgid(0, 0) = 0 [pid 5134] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5134] write(3, "1000", 4) = 4 [pid 5134] close(3) = 0 [pid 5134] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5134] memfd_create("syzkaller", 0) = 3 [pid 5134] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5134] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5134] munmap(0x7f12f2714000, 262144) = 0 [pid 5134] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 56.076409][ T5132] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 56.098687][ T5074] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5134] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5134] close(3) = 0 [pid 5134] mkdir("./file0", 0777) = 0 [pid 5134] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5134] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5134] ioctl(4, LOOP_CLR_FD) = 0 [pid 5134] close(4) = 0 [pid 5134] exit_group(0) = ? [pid 5134] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5134, si_uid=0, si_status=0, si_utime=0, si_stime=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, 0x5555560a2620 /* 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 [ 56.142575][ T5134] loop0: detected capacity change from 0 to 512 [ 56.155878][ T5134] EXT4-fs (loop0): orphan cleanup on readonly fs [ 56.166409][ T5134] EXT4-fs (loop0): 1 truncate cleaned up [ 56.179332][ T5134] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./29/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5136 ./strace-static-x86_64: Process 5136 attached [pid 5136] chdir("./30") = 0 [pid 5136] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5136] setpgid(0, 0) = 0 [pid 5136] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5136] write(3, "1000", 4) = 4 [pid 5136] close(3) = 0 [pid 5136] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5136] memfd_create("syzkaller", 0) = 3 [pid 5136] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5136] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5136] munmap(0x7f12f2714000, 262144) = 0 [pid 5136] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 56.216064][ T5074] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5136] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5136] close(3) = 0 [pid 5136] mkdir("./file0", 0777) = 0 [pid 5136] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5136] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5136] ioctl(4, LOOP_CLR_FD) = 0 [pid 5136] close(4) = 0 [pid 5136] exit_group(0) = ? [pid 5136] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5136, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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, 0x5555560a2620 /* 4 entries */, 32768) = 112 umount2("./30/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 56.261662][ T5136] loop0: detected capacity change from 0 to 512 [ 56.273507][ T5136] EXT4-fs (loop0): orphan cleanup on readonly fs [ 56.284726][ T5136] EXT4-fs (loop0): 1 truncate cleaned up [ 56.298006][ T5136] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./30/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./30") = 0 mkdir("./31", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5138 ./strace-static-x86_64: Process 5138 attached [pid 5138] chdir("./31") = 0 [pid 5138] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5138] setpgid(0, 0) = 0 [pid 5138] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5138] write(3, "1000", 4) = 4 [pid 5138] close(3) = 0 [pid 5138] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5138] memfd_create("syzkaller", 0) = 3 [pid 5138] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5138] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5138] munmap(0x7f12f2714000, 262144) = 0 [pid 5138] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 56.330660][ T5074] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5138] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5138] close(3) = 0 [pid 5138] mkdir("./file0", 0777) = 0 [pid 5138] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5138] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5138] ioctl(4, LOOP_CLR_FD) = 0 [pid 5138] close(4) = 0 [pid 5138] exit_group(0) = ? [pid 5138] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5138, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- 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, 0x5555560a2620 /* 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 [ 56.401238][ T5138] loop0: detected capacity change from 0 to 512 [ 56.414551][ T5138] EXT4-fs (loop0): orphan cleanup on readonly fs [ 56.424558][ T5138] EXT4-fs (loop0): 1 truncate cleaned up [ 56.437111][ T5138] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./31/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./31") = 0 mkdir("./32", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5140 ./strace-static-x86_64: Process 5140 attached [pid 5140] chdir("./32") = 0 [pid 5140] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5140] setpgid(0, 0) = 0 [pid 5140] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5140] write(3, "1000", 4) = 4 [ 56.478338][ T5074] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5140] close(3) = 0 [pid 5140] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5140] memfd_create("syzkaller", 0) = 3 [pid 5140] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5140] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5140] munmap(0x7f12f2714000, 262144) = 0 [pid 5140] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5140] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5140] close(3) = 0 [pid 5140] mkdir("./file0", 0777) = 0 [pid 5140] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5140] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5140] ioctl(4, LOOP_CLR_FD) = 0 [pid 5140] close(4) = 0 [pid 5140] exit_group(0) = ? [pid 5140] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5140, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./32", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./32", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x5555560a2620 /* 4 entries */, 32768) = 112 umount2("./32/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./32/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 [ 56.550159][ T5140] loop0: detected capacity change from 0 to 512 [ 56.563462][ T5140] EXT4-fs (loop0): orphan cleanup on readonly fs [ 56.572549][ T5140] EXT4-fs (loop0): 1 truncate cleaned up 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 5142 attached , child_tidptr=0x5555560a15d0) = 5142 [pid 5142] chdir("./33") = 0 [pid 5142] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5142] setpgid(0, 0) = 0 [pid 5142] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5142] write(3, "1000", 4) = 4 [pid 5142] close(3) = 0 [pid 5142] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5142] memfd_create("syzkaller", 0) = 3 [pid 5142] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5142] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5142] munmap(0x7f12f2714000, 262144) = 0 [pid 5142] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5142] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5142] close(3) = 0 [pid 5142] mkdir("./file0", 0777) = 0 [pid 5142] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5142] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5142] ioctl(4, LOOP_CLR_FD) = 0 [pid 5142] close(4) = 0 [pid 5142] exit_group(0) = ? [pid 5142] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5142, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./33", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./33", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x5555560a2620 /* 4 entries */, 32768) = 112 umount2("./33/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) 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) [ 56.658864][ T5142] loop0: detected capacity change from 0 to 512 [ 56.670918][ T5142] EXT4-fs (loop0): orphan cleanup on readonly fs [ 56.681509][ T5142] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./33/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5144 ./strace-static-x86_64: Process 5144 attached [pid 5144] chdir("./34") = 0 [pid 5144] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5144] setpgid(0, 0) = 0 [pid 5144] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5144] write(3, "1000", 4) = 4 [pid 5144] close(3) = 0 [pid 5144] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5144] memfd_create("syzkaller", 0) = 3 [pid 5144] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5144] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5144] munmap(0x7f12f2714000, 262144) = 0 [pid 5144] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5144] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5144] close(3) = 0 [pid 5144] mkdir("./file0", 0777) = 0 [pid 5144] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5144] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5144] ioctl(4, LOOP_CLR_FD) = 0 [pid 5144] close(4) = 0 [pid 5144] exit_group(0) = ? [pid 5144] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5144, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 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, 0x5555560a2620 /* 4 entries */, 32768) = 112 [ 56.785159][ T5144] loop0: detected capacity change from 0 to 512 [ 56.798778][ T5144] EXT4-fs (loop0): orphan cleanup on readonly fs [ 56.808895][ T5144] EXT4-fs (loop0): 1 truncate cleaned up umount2("./34/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./34/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./34/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5146 ./strace-static-x86_64: Process 5146 attached [pid 5146] chdir("./35") = 0 [pid 5146] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5146] setpgid(0, 0) = 0 [pid 5146] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5146] write(3, "1000", 4) = 4 [pid 5146] close(3) = 0 [pid 5146] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5146] memfd_create("syzkaller", 0) = 3 [pid 5146] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5146] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5146] munmap(0x7f12f2714000, 262144) = 0 [pid 5146] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5146] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5146] close(3) = 0 [pid 5146] mkdir("./file0", 0777) = 0 [pid 5146] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5146] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5146] ioctl(4, LOOP_CLR_FD) = 0 [pid 5146] close(4) = 0 [pid 5146] exit_group(0) = ? [pid 5146] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5146, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- 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 [ 56.912685][ T5146] loop0: detected capacity change from 0 to 512 [ 56.923966][ T5146] EXT4-fs (loop0): orphan cleanup on readonly fs [ 56.933829][ T5146] EXT4-fs (loop0): 1 truncate cleaned up getdents64(3, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./35/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5148 ./strace-static-x86_64: Process 5148 attached [pid 5148] chdir("./36") = 0 [pid 5148] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5148] setpgid(0, 0) = 0 [pid 5148] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5148] write(3, "1000", 4) = 4 [pid 5148] close(3) = 0 [pid 5148] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5148] memfd_create("syzkaller", 0) = 3 [pid 5148] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5148] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5148] munmap(0x7f12f2714000, 262144) = 0 [pid 5148] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5148] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5148] close(3) = 0 [pid 5148] mkdir("./file0", 0777) = 0 [pid 5148] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5148] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5148] ioctl(4, LOOP_CLR_FD) = 0 [pid 5148] close(4) = 0 [pid 5148] exit_group(0) = ? [pid 5148] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5148, si_uid=0, si_status=0, si_utime=0, si_stime=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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./36/file0") = 0 getdents64(3, 0x5555560a2620 /* 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 [ 57.038159][ T5148] loop0: detected capacity change from 0 to 512 [ 57.050782][ T5148] EXT4-fs (loop0): orphan cleanup on readonly fs [ 57.061452][ T5148] EXT4-fs (loop0): 1 truncate cleaned up clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5150 ./strace-static-x86_64: Process 5150 attached [pid 5150] chdir("./37") = 0 [pid 5150] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5150] setpgid(0, 0) = 0 [pid 5150] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5150] write(3, "1000", 4) = 4 [pid 5150] close(3) = 0 [pid 5150] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5150] memfd_create("syzkaller", 0) = 3 [pid 5150] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5150] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5150] munmap(0x7f12f2714000, 262144) = 0 [pid 5150] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5150] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5150] close(3) = 0 [pid 5150] mkdir("./file0", 0777) = 0 [pid 5150] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5150] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5150] ioctl(4, LOOP_CLR_FD) = 0 [pid 5150] close(4) = 0 [pid 5150] exit_group(0) = ? [pid 5150] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5150, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 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, 0x5555560a2620 /* 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 [ 57.130038][ T5150] loop0: detected capacity change from 0 to 512 [ 57.131065][ T5076] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 57.155093][ T5150] EXT4-fs (loop0): orphan cleanup on readonly fs [ 57.165487][ T5150] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./37/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./37") = 0 mkdir("./38", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5152 ./strace-static-x86_64: Process 5152 attached [pid 5152] chdir("./38") = 0 [pid 5152] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5152] setpgid(0, 0) = 0 [pid 5152] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5152] write(3, "1000", 4) = 4 [pid 5152] close(3) = 0 [pid 5152] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5152] memfd_create("syzkaller", 0) = 3 [pid 5152] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5152] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5152] munmap(0x7f12f2714000, 262144) = 0 [pid 5152] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5152] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5152] close(3) = 0 [pid 5152] mkdir("./file0", 0777) = 0 [pid 5152] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5152] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5152] ioctl(4, LOOP_CLR_FD) = 0 [pid 5152] close(4) = 0 [pid 5152] exit_group(0) = ? [pid 5152] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5152, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./38/file0") = 0 getdents64(3, 0x5555560a2620 /* 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) [ 57.254325][ T5152] loop0: detected capacity change from 0 to 512 [ 57.265819][ T5152] EXT4-fs (loop0): orphan cleanup on readonly fs [ 57.275975][ T5152] 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 5154 attached , child_tidptr=0x5555560a15d0) = 5154 [pid 5154] chdir("./39") = 0 [pid 5154] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5154] setpgid(0, 0) = 0 [pid 5154] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5154] write(3, "1000", 4) = 4 [pid 5154] close(3) = 0 [pid 5154] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5154] memfd_create("syzkaller", 0) = 3 [pid 5154] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5154] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5154] munmap(0x7f12f2714000, 262144) = 0 [pid 5154] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5154] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5154] close(3) = 0 [pid 5154] mkdir("./file0", 0777) = 0 [pid 5154] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5154] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5154] ioctl(4, LOOP_CLR_FD) = 0 [pid 5154] close(4) = 0 [pid 5154] exit_group(0) = ? [pid 5154] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5154, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 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, 0x5555560a2620 /* 4 entries */, 32768) = 112 umount2("./39/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 57.355205][ T5154] loop0: detected capacity change from 0 to 512 [ 57.370304][ T5154] EXT4-fs (loop0): orphan cleanup on readonly fs [ 57.379543][ T5154] EXT4-fs (loop0): 1 truncate cleaned up 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./39/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5156 ./strace-static-x86_64: Process 5156 attached [pid 5156] chdir("./40") = 0 [pid 5156] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5156] setpgid(0, 0) = 0 [pid 5156] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5156] write(3, "1000", 4) = 4 [pid 5156] close(3) = 0 [pid 5156] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5156] memfd_create("syzkaller", 0) = 3 [pid 5156] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5156] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5156] munmap(0x7f12f2714000, 262144) = 0 [pid 5156] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5156] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5156] close(3) = 0 [pid 5156] mkdir("./file0", 0777) = 0 [ 57.485643][ T5156] loop0: detected capacity change from 0 to 512 [ 57.499281][ T5156] EXT4-fs (loop0): orphan cleanup on readonly fs [ 57.509112][ T5156] EXT4-fs (loop0): 1 truncate cleaned up [pid 5156] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5156] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5156] ioctl(4, LOOP_CLR_FD) = 0 [pid 5156] close(4) = 0 [pid 5156] exit_group(0) = ? [pid 5156] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5156, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 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, 0x5555560a2620 /* 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 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./40/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./40") = 0 mkdir("./41", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5158 ./strace-static-x86_64: Process 5158 attached [pid 5158] chdir("./41") = 0 [pid 5158] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5158] setpgid(0, 0) = 0 [pid 5158] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5158] write(3, "1000", 4) = 4 [pid 5158] close(3) = 0 [pid 5158] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5158] memfd_create("syzkaller", 0) = 3 [pid 5158] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5158] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5158] munmap(0x7f12f2714000, 262144) = 0 [pid 5158] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5158] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5158] close(3) = 0 [pid 5158] mkdir("./file0", 0777) = 0 [pid 5158] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5158] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5158] ioctl(4, LOOP_CLR_FD) = 0 [pid 5158] close(4) = 0 [pid 5158] exit_group(0) = ? [pid 5158] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5158, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- 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, 0x5555560a2620 /* 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 [ 57.633580][ T5158] loop0: detected capacity change from 0 to 512 [ 57.645684][ T5158] EXT4-fs (loop0): orphan cleanup on readonly fs [ 57.656660][ T5158] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./41/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5160 ./strace-static-x86_64: Process 5160 attached [pid 5160] chdir("./42") = 0 [pid 5160] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5160] setpgid(0, 0) = 0 [pid 5160] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5160] write(3, "1000", 4) = 4 [pid 5160] close(3) = 0 [pid 5160] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5160] memfd_create("syzkaller", 0) = 3 [pid 5160] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5160] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5160] munmap(0x7f12f2714000, 262144) = 0 [pid 5160] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5160] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5160] close(3) = 0 [pid 5160] mkdir("./file0", 0777) = 0 [pid 5160] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5160] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5160] ioctl(4, LOOP_CLR_FD) = 0 [pid 5160] close(4) = 0 [pid 5160] exit_group(0) = ? [pid 5160] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5160, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./42", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) 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, 0x5555560a2620 /* 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 [ 57.765870][ T5160] loop0: detected capacity change from 0 to 512 [ 57.778471][ T5160] EXT4-fs (loop0): orphan cleanup on readonly fs [ 57.788823][ T5160] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./42/file0") = 0 getdents64(3, 0x5555560a2620 /* 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./strace-static-x86_64: Process 5162 attached , child_tidptr=0x5555560a15d0) = 5162 [pid 5162] chdir("./43") = 0 [pid 5162] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5162] setpgid(0, 0) = 0 [pid 5162] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5162] write(3, "1000", 4) = 4 [pid 5162] close(3) = 0 [pid 5162] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5162] memfd_create("syzkaller", 0) = 3 [pid 5162] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5162] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5162] munmap(0x7f12f2714000, 262144) = 0 [pid 5162] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5162] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5162] close(3) = 0 [pid 5162] mkdir("./file0", 0777) = 0 [pid 5162] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5162] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5162] ioctl(4, LOOP_CLR_FD) = 0 [pid 5162] close(4) = 0 [pid 5162] exit_group(0) = ? [pid 5162] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5162, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 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, 0x5555560a2620 /* 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 [ 57.883663][ T5162] loop0: detected capacity change from 0 to 512 [ 57.895373][ T5162] EXT4-fs (loop0): orphan cleanup on readonly fs [ 57.905635][ T5162] EXT4-fs (loop0): 1 truncate cleaned up fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./43/file0") = 0 getdents64(3, 0x5555560a2620 /* 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./strace-static-x86_64: Process 5164 attached , child_tidptr=0x5555560a15d0) = 5164 [pid 5164] chdir("./44") = 0 [pid 5164] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5164] setpgid(0, 0) = 0 [pid 5164] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5164] write(3, "1000", 4) = 4 [pid 5164] close(3) = 0 [pid 5164] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5164] memfd_create("syzkaller", 0) = 3 [pid 5164] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5164] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5164] munmap(0x7f12f2714000, 262144) = 0 [pid 5164] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5164] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5164] close(3) = 0 [pid 5164] mkdir("./file0", 0777) = 0 [pid 5164] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5164] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5164] ioctl(4, LOOP_CLR_FD) = 0 [pid 5164] close(4) = 0 [pid 5164] exit_group(0) = ? [pid 5164] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5164, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- 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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./44/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./44") = 0 [ 58.001767][ T5164] loop0: detected capacity change from 0 to 512 [ 58.013439][ T5164] EXT4-fs (loop0): orphan cleanup on readonly fs [ 58.023359][ T5164] EXT4-fs (loop0): 1 truncate cleaned up 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, child_tidptr=0x5555560a15d0) = 5166 ./strace-static-x86_64: Process 5166 attached [pid 5166] chdir("./45") = 0 [pid 5166] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5166] setpgid(0, 0) = 0 [pid 5166] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5166] write(3, "1000", 4) = 4 [pid 5166] close(3) = 0 [pid 5166] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5166] memfd_create("syzkaller", 0) = 3 [pid 5166] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5166] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5166] munmap(0x7f12f2714000, 262144) = 0 [pid 5166] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5166] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5166] close(3) = 0 [pid 5166] mkdir("./file0", 0777) = 0 [pid 5166] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5166] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5166] ioctl(4, LOOP_CLR_FD) = 0 [pid 5166] close(4) = 0 [pid 5166] exit_group(0) = ? [pid 5166] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5166, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./45", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./45", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x5555560a2620 /* 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 [ 58.107971][ T5166] loop0: detected capacity change from 0 to 512 [ 58.120579][ T5166] EXT4-fs (loop0): orphan cleanup on readonly fs [ 58.130049][ T5166] EXT4-fs (loop0): 1 truncate cleaned up unlink("./45/binderfs") = 0 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./45/file0") = 0 getdents64(3, 0x5555560a2620 /* 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, child_tidptr=0x5555560a15d0) = 5168 ./strace-static-x86_64: Process 5168 attached [pid 5168] chdir("./46") = 0 [pid 5168] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5168] setpgid(0, 0) = 0 [pid 5168] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5168] write(3, "1000", 4) = 4 [pid 5168] close(3) = 0 [pid 5168] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5168] memfd_create("syzkaller", 0) = 3 [pid 5168] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5168] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5168] munmap(0x7f12f2714000, 262144) = 0 [pid 5168] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5168] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5168] close(3) = 0 [pid 5168] mkdir("./file0", 0777) = 0 [pid 5168] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5168] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5168] ioctl(4, LOOP_CLR_FD) = 0 [pid 5168] close(4) = 0 [pid 5168] exit_group(0) = ? [pid 5168] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5168, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./46/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 [ 58.231568][ T5168] loop0: detected capacity change from 0 to 512 [ 58.242970][ T5168] EXT4-fs (loop0): orphan cleanup on readonly fs [ 58.252905][ T5168] EXT4-fs (loop0): 1 truncate cleaned up 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=0x5555560a15d0) = 5170 ./strace-static-x86_64: Process 5170 attached [pid 5170] chdir("./47") = 0 [pid 5170] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5170] setpgid(0, 0) = 0 [pid 5170] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5170] write(3, "1000", 4) = 4 [pid 5170] close(3) = 0 [pid 5170] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5170] memfd_create("syzkaller", 0) = 3 [pid 5170] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5170] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5170] munmap(0x7f12f2714000, 262144) = 0 [pid 5170] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5170] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5170] close(3) = 0 [pid 5170] mkdir("./file0", 0777) = 0 [pid 5170] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5170] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5170] ioctl(4, LOOP_CLR_FD) = 0 [pid 5170] close(4) = 0 [pid 5170] exit_group(0) = ? [pid 5170] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5170, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./47/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./47") = 0 mkdir("./48", 0777) = 0 [ 58.343708][ T5170] loop0: detected capacity change from 0 to 512 [ 58.357311][ T5170] EXT4-fs (loop0): orphan cleanup on readonly fs [ 58.367354][ T5170] 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=0x5555560a15d0) = 5172 ./strace-static-x86_64: Process 5172 attached [pid 5172] chdir("./48") = 0 [pid 5172] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5172] setpgid(0, 0) = 0 [pid 5172] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5172] write(3, "1000", 4) = 4 [pid 5172] close(3) = 0 [pid 5172] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5172] memfd_create("syzkaller", 0) = 3 [pid 5172] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5172] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5172] munmap(0x7f12f2714000, 262144) = 0 [pid 5172] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5172] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5172] close(3) = 0 [pid 5172] mkdir("./file0", 0777) = 0 [pid 5172] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5172] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5172] ioctl(4, LOOP_CLR_FD) = 0 [pid 5172] close(4) = 0 [pid 5172] exit_group(0) = ? [pid 5172] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5172, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [ 58.464444][ T5172] loop0: detected capacity change from 0 to 512 [ 58.478783][ T5172] EXT4-fs (loop0): orphan cleanup on readonly fs [ 58.489993][ T5172] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x5555560a2620 /* 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 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./48/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5174 ./strace-static-x86_64: Process 5174 attached [pid 5174] chdir("./49") = 0 [pid 5174] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5174] setpgid(0, 0) = 0 [pid 5174] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5174] write(3, "1000", 4) = 4 [pid 5174] close(3) = 0 [pid 5174] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5174] memfd_create("syzkaller", 0) = 3 [pid 5174] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5174] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5174] munmap(0x7f12f2714000, 262144) = 0 [pid 5174] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5174] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5174] close(3) = 0 [pid 5174] mkdir("./file0", 0777) = 0 [pid 5174] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5174] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5174] ioctl(4, LOOP_CLR_FD) = 0 [pid 5174] close(4) = 0 [pid 5174] exit_group(0) = ? [pid 5174] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5174, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./49", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./49", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x5555560a2620 /* 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 [ 58.577617][ T5174] loop0: detected capacity change from 0 to 512 [ 58.589411][ T5174] EXT4-fs (loop0): orphan cleanup on readonly fs [ 58.600341][ T5174] EXT4-fs (loop0): 1 truncate cleaned up umount2("./49/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./49/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./49/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./49/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./49/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5176 ./strace-static-x86_64: Process 5176 attached [pid 5176] chdir("./50") = 0 [pid 5176] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5176] setpgid(0, 0) = 0 [pid 5176] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5176] write(3, "1000", 4) = 4 [pid 5176] close(3) = 0 [pid 5176] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5176] memfd_create("syzkaller", 0) = 3 [pid 5176] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5176] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5176] munmap(0x7f12f2714000, 262144) = 0 [pid 5176] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5176] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5176] close(3) = 0 [pid 5176] mkdir("./file0", 0777) = 0 [pid 5176] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5176] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5176] ioctl(4, LOOP_CLR_FD) = 0 [pid 5176] close(4) = 0 [pid 5176] exit_group(0) = ? [pid 5176] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5176, 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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./50/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 [ 58.690322][ T5176] loop0: detected capacity change from 0 to 512 [ 58.702346][ T5176] EXT4-fs (loop0): orphan cleanup on readonly fs [ 58.712591][ T5176] EXT4-fs (loop0): 1 truncate cleaned up 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./strace-static-x86_64: Process 5178 attached , child_tidptr=0x5555560a15d0) = 5178 [pid 5178] chdir("./51") = 0 [pid 5178] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5178] setpgid(0, 0) = 0 [pid 5178] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5178] write(3, "1000", 4) = 4 [pid 5178] close(3) = 0 [pid 5178] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5178] memfd_create("syzkaller", 0) = 3 [pid 5178] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5178] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5178] munmap(0x7f12f2714000, 262144) = 0 [pid 5178] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5178] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5178] close(3) = 0 [pid 5178] mkdir("./file0", 0777) = 0 [pid 5178] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5178] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5178] ioctl(4, LOOP_CLR_FD) = 0 [pid 5178] close(4) = 0 [pid 5178] exit_group(0) = ? [pid 5178] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5178, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- 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, 0x5555560a2620 /* 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 [ 58.803901][ T5178] loop0: detected capacity change from 0 to 512 [ 58.817401][ T5178] EXT4-fs (loop0): orphan cleanup on readonly fs [ 58.828462][ T5178] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./51/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./51") = 0 mkdir("./52", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5180 ./strace-static-x86_64: Process 5180 attached [pid 5180] chdir("./52") = 0 [pid 5180] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5180] setpgid(0, 0) = 0 [pid 5180] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5180] write(3, "1000", 4) = 4 [pid 5180] close(3) = 0 [pid 5180] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5180] memfd_create("syzkaller", 0) = 3 [pid 5180] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5180] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5180] munmap(0x7f12f2714000, 262144) = 0 [pid 5180] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5180] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5180] close(3) = 0 [pid 5180] mkdir("./file0", 0777) = 0 [pid 5180] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5180] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5180] ioctl(4, LOOP_CLR_FD) = 0 [pid 5180] close(4) = 0 [pid 5180] exit_group(0) = ? [pid 5180] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5180, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- umount2("./52", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./52", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x5555560a2620 /* 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 [ 58.923413][ T5180] loop0: detected capacity change from 0 to 512 [ 58.936466][ T5180] EXT4-fs (loop0): orphan cleanup on readonly fs [ 58.947000][ T5180] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./52/file0") = 0 getdents64(3, 0x5555560a2620 /* 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./strace-static-x86_64: Process 5182 attached , child_tidptr=0x5555560a15d0) = 5182 [pid 5182] chdir("./53") = 0 [pid 5182] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5182] setpgid(0, 0) = 0 [pid 5182] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5182] write(3, "1000", 4) = 4 [pid 5182] close(3) = 0 [pid 5182] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5182] memfd_create("syzkaller", 0) = 3 [pid 5182] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5182] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5182] munmap(0x7f12f2714000, 262144) = 0 [pid 5182] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5182] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5182] close(3) = 0 [pid 5182] mkdir("./file0", 0777) = 0 [pid 5182] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5182] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5182] ioctl(4, LOOP_CLR_FD) = 0 [pid 5182] close(4) = 0 [pid 5182] exit_group(0) = ? [pid 5182] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5182, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./53", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./53", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x5555560a2620 /* 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) [ 59.038212][ T5182] loop0: detected capacity change from 0 to 512 [ 59.050928][ T5182] EXT4-fs (loop0): orphan cleanup on readonly fs [ 59.061130][ T5182] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./53/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5184 ./strace-static-x86_64: Process 5184 attached [pid 5184] chdir("./54") = 0 [pid 5184] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5184] setpgid(0, 0) = 0 [pid 5184] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5184] write(3, "1000", 4) = 4 [pid 5184] close(3) = 0 [pid 5184] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5184] memfd_create("syzkaller", 0) = 3 [pid 5184] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5184] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5184] munmap(0x7f12f2714000, 262144) = 0 [pid 5184] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5184] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5184] close(3) = 0 [pid 5184] mkdir("./file0", 0777) = 0 [pid 5184] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5184] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5184] ioctl(4, LOOP_CLR_FD) = 0 [pid 5184] close(4) = 0 [pid 5184] exit_group(0) = ? [pid 5184] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5184, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./54", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./54", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./54/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5186 [ 59.157370][ T5184] loop0: detected capacity change from 0 to 512 [ 59.169010][ T5184] EXT4-fs (loop0): orphan cleanup on readonly fs [ 59.179313][ T5184] EXT4-fs (loop0): 1 truncate cleaned up ./strace-static-x86_64: Process 5186 attached [pid 5186] chdir("./55") = 0 [pid 5186] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5186] setpgid(0, 0) = 0 [pid 5186] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5186] write(3, "1000", 4) = 4 [pid 5186] close(3) = 0 [pid 5186] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5186] memfd_create("syzkaller", 0) = 3 [pid 5186] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5186] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5186] munmap(0x7f12f2714000, 262144) = 0 [pid 5186] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5186] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5186] close(3) = 0 [pid 5186] mkdir("./file0", 0777) = 0 [pid 5186] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5186] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5186] ioctl(4, LOOP_CLR_FD) = 0 [pid 5186] close(4) = 0 [pid 5186] exit_group(0) = ? [pid 5186] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5186, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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, 0x5555560a2620 /* 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 [ 59.268552][ T5186] loop0: detected capacity change from 0 to 512 [ 59.280889][ T5186] EXT4-fs (loop0): orphan cleanup on readonly fs [ 59.290686][ T5186] EXT4-fs (loop0): 1 truncate cleaned up unlink("./55/binderfs") = 0 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./55/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./55") = 0 mkdir("./56", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5188 ./strace-static-x86_64: Process 5188 attached [pid 5188] chdir("./56") = 0 [pid 5188] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5188] setpgid(0, 0) = 0 [pid 5188] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5188] write(3, "1000", 4) = 4 [pid 5188] close(3) = 0 [pid 5188] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5188] memfd_create("syzkaller", 0) = 3 [pid 5188] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5188] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5188] munmap(0x7f12f2714000, 262144) = 0 [pid 5188] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5188] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5188] close(3) = 0 [pid 5188] mkdir("./file0", 0777) = 0 [pid 5188] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5188] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5188] ioctl(4, LOOP_CLR_FD) = 0 [pid 5188] close(4) = 0 [pid 5188] exit_group(0) = ? [pid 5188] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5188, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- 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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./56/file0") = 0 getdents64(3, 0x5555560a2620 /* 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) [ 59.401501][ T5188] loop0: detected capacity change from 0 to 512 [ 59.413194][ T5188] EXT4-fs (loop0): orphan cleanup on readonly fs [ 59.423520][ T5188] 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 5190 attached [pid 5190] chdir("./57") = 0 [pid 5190] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5190] setpgid(0, 0) = 0 [pid 5190] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5074] <... clone resumed>, child_tidptr=0x5555560a15d0) = 5190 [pid 5190] write(3, "1000", 4) = 4 [pid 5190] close(3) = 0 [pid 5190] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5190] memfd_create("syzkaller", 0) = 3 [pid 5190] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5190] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5190] munmap(0x7f12f2714000, 262144) = 0 [pid 5190] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5190] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5190] close(3) = 0 [pid 5190] mkdir("./file0", 0777) = 0 [pid 5190] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5190] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5190] ioctl(4, LOOP_CLR_FD) = 0 [pid 5190] close(4) = 0 [pid 5190] exit_group(0) = ? [pid 5190] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5190, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./57/file0") = 0 getdents64(3, 0x5555560a2620 /* 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) [ 59.501684][ T5190] loop0: detected capacity change from 0 to 512 [ 59.514197][ T5190] EXT4-fs (loop0): orphan cleanup on readonly fs [ 59.524053][ T5190] EXT4-fs (loop0): 1 truncate cleaned up close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5192 ./strace-static-x86_64: Process 5192 attached [pid 5192] chdir("./58") = 0 [pid 5192] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5192] setpgid(0, 0) = 0 [pid 5192] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5192] write(3, "1000", 4) = 4 [pid 5192] close(3) = 0 [pid 5192] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5192] memfd_create("syzkaller", 0) = 3 [pid 5192] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5192] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5192] munmap(0x7f12f2714000, 262144) = 0 [pid 5192] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5192] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5192] close(3) = 0 [pid 5192] mkdir("./file0", 0777) = 0 [pid 5192] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5192] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5192] ioctl(4, LOOP_CLR_FD) = 0 [pid 5192] close(4) = 0 [pid 5192] exit_group(0) = ? [pid 5192] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5192, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./58", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./58", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x5555560a2620 /* 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 [ 59.605769][ T5192] loop0: detected capacity change from 0 to 512 [ 59.617530][ T5192] EXT4-fs (loop0): orphan cleanup on readonly fs [ 59.628447][ T5192] EXT4-fs (loop0): 1 truncate cleaned up getdents64(4, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./58/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5194 ./strace-static-x86_64: Process 5194 attached [pid 5194] chdir("./59") = 0 [pid 5194] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5194] setpgid(0, 0) = 0 [pid 5194] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5194] write(3, "1000", 4) = 4 [pid 5194] close(3) = 0 [pid 5194] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5194] memfd_create("syzkaller", 0) = 3 [pid 5194] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5194] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5194] munmap(0x7f12f2714000, 262144) = 0 [pid 5194] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5194] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5194] close(3) = 0 [pid 5194] mkdir("./file0", 0777) = 0 [ 59.715831][ T5194] loop0: detected capacity change from 0 to 512 [ 59.727858][ T5194] EXT4-fs (loop0): orphan cleanup on readonly fs [ 59.737924][ T5194] [ 59.740273][ T5194] ====================================================== [ 59.747288][ T5194] WARNING: possible circular locking dependency detected [ 59.754282][ T5194] 6.1.0-syzkaller-14594-g72a85e2b0a1e #0 Not tainted [ 59.761016][ T5194] ------------------------------------------------------ [ 59.768016][ T5194] syz-executor335/5194 is trying to acquire lock: [ 59.774410][ T5194] ffff88807581d068 (&dquot->dq_lock){+.+.}-{3:3}, at: dquot_commit+0x58/0x4e0 [ 59.783276][ T5194] [ 59.783276][ T5194] but task is already holding lock: [ 59.790620][ T5194] ffff888072d3f0e0 (&ei->i_data_sem/2){++++}-{3:3}, at: ext4_truncate+0x9f4/0xea0 [ 59.799833][ T5194] [ 59.799833][ T5194] which lock already depends on the new lock. [ 59.799833][ T5194] [ 59.810229][ T5194] [ 59.810229][ T5194] the existing dependency chain (in reverse order) is: [ 59.819224][ T5194] [ 59.819224][ T5194] -> #2 (&ei->i_data_sem/2){++++}-{3:3}: [ 59.827023][ T5194] lock_acquire+0x182/0x3c0 [ 59.832032][ T5194] down_read+0x39/0x50 [ 59.836613][ T5194] ext4_map_blocks+0x398/0x1cc0 [ 59.841972][ T5194] ext4_getblk+0x1b9/0x770 [ 59.846898][ T5194] ext4_bread+0x2a/0x170 [ 59.851648][ T5194] ext4_quota_write+0x225/0x570 [ 59.857013][ T5194] get_free_dqblk+0x34a/0x6d0 [ 59.862216][ T5194] do_insert_tree+0x9f1/0x1aa0 [ 59.867492][ T5194] do_insert_tree+0x722/0x1aa0 [ 59.872759][ T5194] do_insert_tree+0x722/0x1aa0 [ 59.878031][ T5194] do_insert_tree+0x722/0x1aa0 [ 59.883301][ T5194] qtree_write_dquot+0x3b6/0x530 [ 59.888744][ T5194] v2_write_dquot+0x11b/0x190 [ 59.893924][ T5194] dquot_acquire+0x348/0x670 [ 59.899017][ T5194] ext4_acquire_dquot+0x2dc/0x400 [ 59.904567][ T5194] dqget+0x999/0xdc0 [ 59.908968][ T5194] __dquot_initialize+0x3d0/0xcf0 [ 59.914534][ T5194] ext4_process_orphan+0x57/0x2d0 [ 59.920086][ T5194] ext4_orphan_cleanup+0xb60/0x1340 [ 59.925796][ T5194] ext4_fill_super+0x81cd/0x8700 [ 59.931239][ T5194] get_tree_bdev+0x400/0x620 [ 59.936337][ T5194] vfs_get_tree+0x88/0x270 [ 59.941258][ T5194] do_new_mount+0x289/0xad0 [ 59.946285][ T5194] __se_sys_mount+0x2d3/0x3c0 [ 59.951479][ T5194] do_syscall_64+0x3d/0xb0 [ 59.956402][ T5194] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 59.962801][ T5194] [ 59.962801][ T5194] -> #1 (&s->s_dquot.dqio_sem){++++}-{3:3}: [ 59.970865][ T5194] lock_acquire+0x182/0x3c0 [ 59.975883][ T5194] down_read+0x39/0x50 [ 59.980468][ T5194] v2_read_dquot+0x4a/0x100 [ 59.985504][ T5194] dquot_acquire+0x186/0x670 [ 59.990622][ T5194] ext4_acquire_dquot+0x2dc/0x400 [ 59.996156][ T5194] dqget+0x999/0xdc0 [ 60.000556][ T5194] __dquot_initialize+0x291/0xcf0 [ 60.006090][ T5194] ext4_process_orphan+0x57/0x2d0 [ 60.011631][ T5194] ext4_orphan_cleanup+0xb60/0x1340 [ 60.017330][ T5194] ext4_fill_super+0x81cd/0x8700 [ 60.022776][ T5194] get_tree_bdev+0x400/0x620 [ 60.027876][ T5194] vfs_get_tree+0x88/0x270 [ 60.032802][ T5194] do_new_mount+0x289/0xad0 [ 60.037811][ T5194] __se_sys_mount+0x2d3/0x3c0 [ 60.043000][ T5194] do_syscall_64+0x3d/0xb0 [ 60.047940][ T5194] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 60.054339][ T5194] [ 60.054339][ T5194] -> #0 (&dquot->dq_lock){+.+.}-{3:3}: [ 60.061958][ T5194] validate_chain+0x1898/0x6ae0 [ 60.067316][ T5194] __lock_acquire+0x1292/0x1f60 [ 60.072670][ T5194] lock_acquire+0x182/0x3c0 [ 60.077677][ T5194] __mutex_lock_common+0x1bd/0x26e0 [ 60.083384][ T5194] mutex_lock_nested+0x17/0x20 [ 60.088653][ T5194] dquot_commit+0x58/0x4e0 [ 60.093575][ T5194] ext4_write_dquot+0x1ea/0x2b0 [ 60.098960][ T5194] __dquot_free_space+0x9b8/0xfd0 [ 60.104510][ T5194] ext4_free_blocks+0x1c4a/0x2810 [ 60.110039][ T5194] ext4_ext_remove_space+0x1f5f/0x46a0 [ 60.116007][ T5194] ext4_ext_truncate+0x177/0x220 [ 60.121465][ T5194] ext4_truncate+0xa6a/0xea0 [ 60.126563][ T5194] ext4_process_orphan+0x1aa/0x2d0 [ 60.132177][ T5194] ext4_orphan_cleanup+0xb60/0x1340 [ 60.137885][ T5194] ext4_fill_super+0x81cd/0x8700 [ 60.143350][ T5194] get_tree_bdev+0x400/0x620 [ 60.148471][ T5194] vfs_get_tree+0x88/0x270 [ 60.153399][ T5194] do_new_mount+0x289/0xad0 [ 60.158408][ T5194] __se_sys_mount+0x2d3/0x3c0 [ 60.163601][ T5194] do_syscall_64+0x3d/0xb0 [ 60.168524][ T5194] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 60.174933][ T5194] [ 60.174933][ T5194] other info that might help us debug this: [ 60.174933][ T5194] [ 60.185142][ T5194] Chain exists of: [ 60.185142][ T5194] &dquot->dq_lock --> &s->s_dquot.dqio_sem --> &ei->i_data_sem/2 [ 60.185142][ T5194] [ 60.198764][ T5194] Possible unsafe locking scenario: [ 60.198764][ T5194] [ 60.206200][ T5194] CPU0 CPU1 [ 60.211557][ T5194] ---- ---- [ 60.216911][ T5194] lock(&ei->i_data_sem/2); [ 60.221487][ T5194] lock(&s->s_dquot.dqio_sem); [ 60.228837][ T5194] lock(&ei->i_data_sem/2); [ 60.235939][ T5194] lock(&dquot->dq_lock); [ 60.240353][ T5194] [ 60.240353][ T5194] *** DEADLOCK *** [ 60.240353][ T5194] [ 60.248483][ T5194] 4 locks held by syz-executor335/5194: [ 60.254007][ T5194] #0: ffff8880796d20e0 (&type->s_umount_key#27/1){+.+.}-{3:3}, at: alloc_super+0x212/0x920 [ 60.264100][ T5194] #1: ffff888072d3f258 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_process_orphan+0x164/0x2d0 [ 60.275065][ T5194] #2: ffff888072d3f0e0 (&ei->i_data_sem/2){++++}-{3:3}, at: ext4_truncate+0x9f4/0xea0 [ 60.284738][ T5194] #3: ffffffff8d46e748 (dquot_srcu){....}-{0:0}, at: rcu_lock_acquire+0x5/0x30 [ 60.293807][ T5194] [ 60.293807][ T5194] stack backtrace: [ 60.299679][ T5194] CPU: 0 PID: 5194 Comm: syz-executor335 Not tainted 6.1.0-syzkaller-14594-g72a85e2b0a1e #0 [ 60.309733][ T5194] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 60.319773][ T5194] Call Trace: [ 60.323046][ T5194] [ 60.325963][ T5194] dump_stack_lvl+0x1b1/0x290 [ 60.330648][ T5194] ? nf_tcp_handle_invalid+0x630/0x630 [ 60.336120][ T5194] ? print_circular_bug+0x13e/0x1c0 [ 60.341328][ T5194] check_noncircular+0x2cc/0x390 [ 60.346272][ T5194] ? add_chain_block+0x850/0x850 [ 60.351198][ T5194] ? lockdep_lock+0x102/0x290 [ 60.355873][ T5194] ? _find_first_zero_bit+0xe8/0x110 [ 60.361161][ T5194] validate_chain+0x1898/0x6ae0 [ 60.366004][ T5194] ? check_noncircular+0x1aa/0x390 [ 60.371104][ T5194] ? reacquire_held_locks+0x650/0x650 [ 60.376518][ T5194] ? add_chain_block+0x850/0x850 [ 60.381472][ T5194] ? lockdep_lock+0x102/0x290 [ 60.386158][ T5194] ? lockdep_unlock+0x144/0x2e0 [ 60.390999][ T5194] ? lockdep_lock+0x290/0x290 [ 60.395664][ T5194] ? _find_first_zero_bit+0xe8/0x110 [ 60.400936][ T5194] ? validate_chain+0x177/0x6ae0 [ 60.405880][ T5194] ? reacquire_held_locks+0x650/0x650 [ 60.411264][ T5194] ? reacquire_held_locks+0x650/0x650 [ 60.416622][ T5194] ? lockdep_unlock+0x144/0x2e0 [ 60.421462][ T5194] ? reacquire_held_locks+0x650/0x650 [ 60.426831][ T5194] ? reacquire_held_locks+0x650/0x650 [ 60.432199][ T5194] ? reacquire_held_locks+0x650/0x650 [ 60.437556][ T5194] ? reacquire_held_locks+0x650/0x650 [ 60.442918][ T5194] ? validate_chain+0x177/0x6ae0 [ 60.447840][ T5194] ? reacquire_held_locks+0x650/0x650 [ 60.453202][ T5194] ? reacquire_held_locks+0x650/0x650 [ 60.458578][ T5194] ? reacquire_held_locks+0x650/0x650 [ 60.463965][ T5194] ? reacquire_held_locks+0x650/0x650 [ 60.469335][ T5194] ? validate_chain+0x1478/0x6ae0 [ 60.474391][ T5194] ? check_path+0x21/0x40 [ 60.478717][ T5194] ? check_noncircular+0x1aa/0x390 [ 60.483827][ T5194] ? add_chain_block+0x850/0x850 [ 60.488758][ T5194] ? lockdep_lock+0x102/0x290 [ 60.493496][ T5194] ? lockdep_unlock+0x144/0x2e0 [ 60.498350][ T5194] ? lockdep_lock+0x290/0x290 [ 60.503035][ T5194] ? validate_chain+0x1478/0x6ae0 [ 60.508046][ T5194] ? _find_first_zero_bit+0xe8/0x110 [ 60.513321][ T5194] ? validate_chain+0x1478/0x6ae0 [ 60.518341][ T5194] ? reacquire_held_locks+0x650/0x650 [ 60.523724][ T5194] ? reacquire_held_locks+0x650/0x650 [ 60.529085][ T5194] ? reacquire_held_locks+0x650/0x650 [ 60.534444][ T5194] ? validate_chain+0x177/0x6ae0 [ 60.539370][ T5194] ? rcu_lock_release+0x5/0x20 [ 60.544121][ T5194] ? __lock_acquire+0x1f60/0x1f60 [ 60.549130][ T5194] ? deref_stack_reg+0x17a/0x210 [ 60.554055][ T5194] ? preempt_count_add+0x8d/0x180 [ 60.559068][ T5194] ? mark_lock+0x9a/0x350 [ 60.563387][ T5194] ? stack_trace_save+0x1e0/0x1e0 [ 60.568408][ T5194] ? stack_trace_save+0x1e0/0x1e0 [ 60.573422][ T5194] ? stack_trace_save+0x1e0/0x1e0 [ 60.578431][ T5194] ? rcu_read_lock_sched_held+0x87/0x110 [ 60.584050][ T5194] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 60.590034][ T5194] ? rcu_lock_release+0x5/0x20 [ 60.594812][ T5194] ? trace_lock_release+0x95/0x220 [ 60.599951][ T5194] ? stack_trace_save+0x1e0/0x1e0 [ 60.605067][ T5194] ? rcu_read_lock_sched_held+0x87/0x110 [ 60.610693][ T5194] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 60.616666][ T5194] ? rcu_lock_release+0x5/0x20 [ 60.621423][ T5194] ? trace_lock_release+0x95/0x220 [ 60.626532][ T5194] ? rcu_read_lock_sched_held+0x87/0x110 [ 60.632156][ T5194] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 60.638128][ T5194] ? mark_lock+0x9a/0x350 [ 60.642449][ T5194] __lock_acquire+0x1292/0x1f60 [ 60.647812][ T5194] lock_acquire+0x182/0x3c0 [ 60.652405][ T5194] ? dquot_commit+0x58/0x4e0 [ 60.657062][ T5194] ? read_lock_is_recursive+0x10/0x10 [ 60.662422][ T5194] ? __might_sleep+0xc0/0xc0 [ 60.667002][ T5194] ? finish_task_switch+0x140/0x610 [ 60.672201][ T5194] ? __switch_to_asm+0x34/0x60 [ 60.676960][ T5194] ? __schedule+0x99d/0xe20 [ 60.681452][ T5194] __mutex_lock_common+0x1bd/0x26e0 [ 60.686644][ T5194] ? dquot_commit+0x58/0x4e0 [ 60.691239][ T5194] ? dquot_commit+0x58/0x4e0 [ 60.695819][ T5194] ? __might_sleep+0xc0/0xc0 [ 60.700399][ T5194] ? mutex_lock_io_nested+0x60/0x60 [ 60.705583][ T5194] ? rcu_read_lock_sched_held+0x87/0x110 [ 60.711199][ T5194] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 60.717175][ T5194] ? preempt_schedule_common+0xb7/0xe0 [ 60.722634][ T5194] ? preempt_schedule+0xb6/0xc0 [ 60.727469][ T5194] mutex_lock_nested+0x17/0x20 [ 60.732220][ T5194] dquot_commit+0x58/0x4e0 [ 60.736633][ T5194] ? __ext4_journal_start_sb+0x19b/0x1f0 [ 60.742274][ T5194] ext4_write_dquot+0x1ea/0x2b0 [ 60.747112][ T5194] __dquot_free_space+0x9b8/0xfd0 [ 60.752126][ T5194] ? dquot_reclaim_space_nodirty+0x800/0x800 [ 60.758102][ T5194] ? ext4_block_bitmap_csum_set+0x1c3/0x4f0 [ 60.763989][ T5194] ? lock_set_class+0x890/0x8c0 [ 60.768830][ T5194] ext4_free_blocks+0x1c4a/0x2810 [ 60.773844][ T5194] ? __lock_acquire+0x1f60/0x1f60 [ 60.778864][ T5194] ? trace_ext4_allocate_blocks+0x2f0/0x2f0 [ 60.784747][ T5194] ? rcu_read_lock_sched_held+0x87/0x110 [ 60.790375][ T5194] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 60.796363][ T5194] ? __ext4_journal_ensure_credits+0x2c/0x460 [ 60.802444][ T5194] ? ext4_inode_journal_mode+0x185/0x460 [ 60.808080][ T5194] ? trace_ext4_remove_blocks+0x10b/0x330 [ 60.813782][ T5194] ext4_ext_remove_space+0x1f5f/0x46a0 [ 60.819238][ T5194] ? ext4_da_release_space+0x1de/0x370 [ 60.824683][ T5194] ? ext4_ext_index_trans_blocks+0x120/0x120 [ 60.830653][ T5194] ? ext4_es_remove_extent+0x1ab/0x260 [ 60.836116][ T5194] ? trace_ext4_es_lookup_extent_exit+0x300/0x300 [ 60.842525][ T5194] ? down_write+0x1a5/0x270 [ 60.847014][ T5194] ? trace_ext4_fc_stats+0x2f0/0x2f0 [ 60.852281][ T5194] ? down_read_killable+0x80/0x80 [ 60.857290][ T5194] ext4_ext_truncate+0x177/0x220 [ 60.862212][ T5194] ext4_truncate+0xa6a/0xea0 [ 60.866789][ T5194] ? __ext4_mark_inode_dirty+0x670/0x670 [ 60.872437][ T5194] ext4_process_orphan+0x1aa/0x2d0 [ 60.877536][ T5194] ext4_orphan_cleanup+0xb60/0x1340 [ 60.882725][ T5194] ? ext4_orphan_del+0xc20/0xc20 [ 60.887646][ T5194] ? __init_swait_queue_head+0xa6/0x140 [ 60.893181][ T5194] ? errseq_check_and_advance+0x5e/0x110 [ 60.898806][ T5194] ext4_fill_super+0x81cd/0x8700 [ 60.903737][ T5194] ? ext4_parse_test_dummy_encryption+0xb0/0xb0 [ 60.909969][ T5194] ? snprintf+0xc0/0x110 [ 60.914231][ T5194] ? set_blocksize+0x1ec/0x390 [ 60.918983][ T5194] ? sb_set_blocksize+0x95/0xf0 [ 60.923816][ T5194] get_tree_bdev+0x400/0x620 [ 60.928405][ T5194] ? ext4_parse_test_dummy_encryption+0xb0/0xb0 [ 60.934659][ T5194] vfs_get_tree+0x88/0x270 [ 60.939062][ T5194] do_new_mount+0x289/0xad0 [ 60.943555][ T5194] ? do_move_mount_old+0x150/0x150 [ 60.948648][ T5194] ? user_path_at_empty+0x149/0x1a0 [ 60.953838][ T5194] __se_sys_mount+0x2d3/0x3c0 [ 60.958515][ T5194] ? __x64_sys_mount+0xc0/0xc0 [ 60.963260][ T5194] ? syscall_enter_from_user_mode+0x2e/0x1d0 [ 60.969226][ T5194] ? __x64_sys_mount+0x1c/0xc0 [ 60.973976][ T5194] do_syscall_64+0x3d/0xb0 [ 60.978393][ T5194] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 60.984296][ T5194] RIP: 0033:0x7f12fab62cca [ 60.988697][ T5194] 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 [ 61.008462][ T5194] RSP: 002b:00007fff0bedd0a8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [pid 5194] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5194] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5194] ioctl(4, LOOP_CLR_FD) = 0 [ 61.016894][ T5194] RAX: ffffffffffffffda RBX: 00005555560a12c0 RCX: 00007f12fab62cca [ 61.024856][ T5194] RDX: 0000000020000040 RSI: 0000000020000500 RDI: 00007fff0bedd0f0 [ 61.032813][ T5194] RBP: 0000000000000000 R08: 00007fff0bedd130 R09: 00000000000004b4 [ 61.040773][ T5194] R10: 0000000000000047 R11: 0000000000000206 R12: 0000000000000004 [ 61.048729][ T5194] R13: 00007fff0bedd130 R14: 0000000000000003 R15: 00007fff0bedd0f0 [ 61.056691][ T5194] [ 61.060838][ T5194] EXT4-fs (loop0): 1 truncate cleaned up [pid 5194] close(4) = 0 [pid 5194] exit_group(0) = ? [pid 5194] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5194, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- 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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./59/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5196 ./strace-static-x86_64: Process 5196 attached [pid 5196] chdir("./60") = 0 [pid 5196] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5196] setpgid(0, 0) = 0 [pid 5196] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5196] write(3, "1000", 4) = 4 [pid 5196] close(3) = 0 [pid 5196] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5196] memfd_create("syzkaller", 0) = 3 [pid 5196] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5196] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5196] munmap(0x7f12f2714000, 262144) = 0 [pid 5196] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 61.088302][ T5194] syz-executor335 (5194) used greatest stack depth: 16376 bytes left [pid 5196] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5196] close(3) = 0 [pid 5196] mkdir("./file0", 0777) = 0 [pid 5196] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5196] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5196] ioctl(4, LOOP_CLR_FD) = 0 [pid 5196] close(4) = 0 [pid 5196] exit_group(0) = ? [pid 5196] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5196, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 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, 0x5555560a2620 /* 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 [ 61.132634][ T5196] loop0: detected capacity change from 0 to 512 [ 61.142347][ T5196] EXT4-fs (loop0): orphan cleanup on readonly fs [ 61.151359][ T5196] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./60/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5198 ./strace-static-x86_64: Process 5198 attached [pid 5198] chdir("./61") = 0 [pid 5198] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5198] setpgid(0, 0) = 0 [pid 5198] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5198] write(3, "1000", 4) = 4 [pid 5198] close(3) = 0 [pid 5198] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5198] memfd_create("syzkaller", 0) = 3 [pid 5198] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5198] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5198] munmap(0x7f12f2714000, 262144) = 0 [pid 5198] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5198] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5198] close(3) = 0 [pid 5198] mkdir("./file0", 0777) = 0 [pid 5198] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5198] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5198] ioctl(4, LOOP_CLR_FD) = 0 [pid 5198] close(4) = 0 [pid 5198] exit_group(0) = ? [pid 5198] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5198, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- 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, 0x5555560a2620 /* 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 [ 61.213507][ T5198] loop0: detected capacity change from 0 to 512 [ 61.223884][ T5198] EXT4-fs (loop0): orphan cleanup on readonly fs [ 61.232797][ T5198] 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./61/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5200 ./strace-static-x86_64: Process 5200 attached [pid 5200] chdir("./62") = 0 [pid 5200] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5200] setpgid(0, 0) = 0 [pid 5200] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5200] write(3, "1000", 4) = 4 [pid 5200] close(3) = 0 [pid 5200] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5200] memfd_create("syzkaller", 0) = 3 [pid 5200] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5200] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5200] munmap(0x7f12f2714000, 262144) = 0 [pid 5200] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5200] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5200] close(3) = 0 [pid 5200] mkdir("./file0", 0777) = 0 [ 61.285473][ T5200] loop0: detected capacity change from 0 to 512 [ 61.286814][ T5076] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 61.301443][ T5076] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 [ 61.310632][ T5076] Buffer I/O error on dev loop0, logical block 0, async page read [ 61.321745][ T5200] EXT4-fs (loop0): orphan cleanup on readonly fs [pid 5200] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5200] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5200] ioctl(4, LOOP_CLR_FD) = 0 [pid 5200] close(4) = 0 [pid 5200] exit_group(0) = ? [pid 5200] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5200, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 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, 0x5555560a2620 /* 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 [ 61.331108][ T5200] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./62/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5202 ./strace-static-x86_64: Process 5202 attached [pid 5202] chdir("./63") = 0 [pid 5202] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5202] setpgid(0, 0) = 0 [pid 5202] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5202] write(3, "1000", 4) = 4 [pid 5202] close(3) = 0 [pid 5202] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5202] memfd_create("syzkaller", 0) = 3 [pid 5202] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5202] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5202] munmap(0x7f12f2714000, 262144) = 0 [pid 5202] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5202] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5202] close(3) = 0 [pid 5202] mkdir("./file0", 0777) = 0 [pid 5202] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5202] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5202] ioctl(4, LOOP_CLR_FD) = 0 [pid 5202] close(4) = 0 [pid 5202] exit_group(0) = ? [pid 5202] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5202, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 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, 0x5555560a2620 /* 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 [ 61.392839][ T5202] loop0: detected capacity change from 0 to 512 [ 61.402058][ T5202] EXT4-fs (loop0): orphan cleanup on readonly fs [ 61.410394][ T5202] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./63/file0") = 0 getdents64(3, 0x5555560a2620 /* 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./strace-static-x86_64: Process 5204 attached , child_tidptr=0x5555560a15d0) = 5204 [pid 5204] chdir("./64") = 0 [pid 5204] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5204] setpgid(0, 0) = 0 [pid 5204] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5204] write(3, "1000", 4) = 4 [pid 5204] close(3) = 0 [pid 5204] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5204] memfd_create("syzkaller", 0) = 3 [pid 5204] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5204] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5204] munmap(0x7f12f2714000, 262144) = 0 [pid 5204] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5204] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5204] close(3) = 0 [pid 5204] mkdir("./file0", 0777) = 0 [pid 5204] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5204] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5204] ioctl(4, LOOP_CLR_FD) = 0 [pid 5204] close(4) = 0 [pid 5204] exit_group(0) = ? [pid 5204] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5204, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./64", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./64", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x5555560a2620 /* 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 [ 61.471832][ T5204] loop0: detected capacity change from 0 to 512 [ 61.482150][ T5204] EXT4-fs (loop0): orphan cleanup on readonly fs [ 61.490673][ T5204] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./64/file0") = 0 getdents64(3, 0x5555560a2620 /* 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./strace-static-x86_64: Process 5206 attached [pid 5206] chdir("./65") = 0 [pid 5206] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5206] setpgid(0, 0) = 0 [pid 5206] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5074] <... clone resumed>, child_tidptr=0x5555560a15d0) = 5206 [pid 5206] <... openat resumed>) = 3 [pid 5206] write(3, "1000", 4) = 4 [pid 5206] close(3) = 0 [pid 5206] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5206] memfd_create("syzkaller", 0) = 3 [pid 5206] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5206] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5206] munmap(0x7f12f2714000, 262144) = 0 [pid 5206] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5206] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5206] close(3) = 0 [pid 5206] mkdir("./file0", 0777) = 0 [pid 5206] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5206] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5206] ioctl(4, LOOP_CLR_FD) = 0 [pid 5206] close(4) = 0 [pid 5206] exit_group(0) = ? [pid 5206] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5206, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- 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, 0x5555560a2620 /* 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 [ 61.559236][ T5206] loop0: detected capacity change from 0 to 512 [ 61.568602][ T5206] EXT4-fs (loop0): orphan cleanup on readonly fs [ 61.577337][ T5206] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./65/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5208 ./strace-static-x86_64: Process 5208 attached [pid 5208] chdir("./66") = 0 [pid 5208] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5208] setpgid(0, 0) = 0 [pid 5208] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5208] write(3, "1000", 4) = 4 [pid 5208] close(3) = 0 [pid 5208] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5208] memfd_create("syzkaller", 0) = 3 [pid 5208] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5208] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5208] munmap(0x7f12f2714000, 262144) = 0 [pid 5208] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5208] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5208] close(3) = 0 [pid 5208] mkdir("./file0", 0777) = 0 [pid 5208] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5208] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5208] ioctl(4, LOOP_CLR_FD) = 0 [pid 5208] close(4) = 0 [pid 5208] exit_group(0) = ? [pid 5208] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5208, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 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, 0x5555560a2620 /* 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) [ 61.643759][ T5208] loop0: detected capacity change from 0 to 512 [ 61.654278][ T5208] EXT4-fs (loop0): orphan cleanup on readonly fs [ 61.662670][ T5208] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./66/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5210 ./strace-static-x86_64: Process 5210 attached [pid 5210] chdir("./67") = 0 [pid 5210] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5210] setpgid(0, 0) = 0 [pid 5210] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5210] write(3, "1000", 4) = 4 [pid 5210] close(3) = 0 [pid 5210] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5210] memfd_create("syzkaller", 0) = 3 [pid 5210] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5210] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5210] munmap(0x7f12f2714000, 262144) = 0 [pid 5210] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5210] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5210] close(3) = 0 [pid 5210] mkdir("./file0", 0777) = 0 [pid 5210] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5210] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5210] ioctl(4, LOOP_CLR_FD) = 0 [pid 5210] close(4) = 0 [pid 5210] exit_group(0) = ? [pid 5210] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5210, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- 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, 0x5555560a2620 /* 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 [ 61.724248][ T5210] loop0: detected capacity change from 0 to 512 [ 61.733910][ T5210] EXT4-fs (loop0): orphan cleanup on readonly fs [ 61.743288][ T5210] EXT4-fs (loop0): 1 truncate cleaned up 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) 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./67/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5212 ./strace-static-x86_64: Process 5212 attached [pid 5212] chdir("./68") = 0 [pid 5212] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5212] setpgid(0, 0) = 0 [pid 5212] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5212] write(3, "1000", 4) = 4 [pid 5212] close(3) = 0 [pid 5212] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5212] memfd_create("syzkaller", 0) = 3 [pid 5212] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5212] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5212] munmap(0x7f12f2714000, 262144) = 0 [pid 5212] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5212] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5212] close(3) = 0 [pid 5212] mkdir("./file0", 0777) = 0 [pid 5212] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5212] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5212] ioctl(4, LOOP_CLR_FD) = 0 [pid 5212] close(4) = 0 [pid 5212] exit_group(0) = ? [pid 5212] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5212, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./68", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./68", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x5555560a2620 /* 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 [ 61.804188][ T5212] loop0: detected capacity change from 0 to 512 [ 61.814324][ T5212] EXT4-fs (loop0): orphan cleanup on readonly fs [ 61.822807][ T5212] EXT4-fs (loop0): 1 truncate cleaned up 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) 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./68/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5214 ./strace-static-x86_64: Process 5214 attached [pid 5214] chdir("./69") = 0 [pid 5214] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5214] setpgid(0, 0) = 0 [pid 5214] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5214] write(3, "1000", 4) = 4 [pid 5214] close(3) = 0 [pid 5214] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5214] memfd_create("syzkaller", 0) = 3 [pid 5214] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5214] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5214] munmap(0x7f12f2714000, 262144) = 0 [pid 5214] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5214] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5214] close(3) = 0 [pid 5214] mkdir("./file0", 0777) = 0 [pid 5214] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5214] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5214] ioctl(4, LOOP_CLR_FD) = 0 [pid 5214] close(4) = 0 [pid 5214] exit_group(0) = ? [pid 5214] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5214, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- 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, 0x5555560a2620 /* 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 [ 61.890367][ T5214] loop0: detected capacity change from 0 to 512 [ 61.901255][ T5214] EXT4-fs (loop0): orphan cleanup on readonly fs [ 61.909750][ T5214] EXT4-fs (loop0): 1 truncate cleaned up umount2("./69/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./69/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5216 ./strace-static-x86_64: Process 5216 attached [pid 5216] chdir("./70") = 0 [pid 5216] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5216] setpgid(0, 0) = 0 [pid 5216] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5216] write(3, "1000", 4) = 4 [pid 5216] close(3) = 0 [pid 5216] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5216] memfd_create("syzkaller", 0) = 3 [pid 5216] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5216] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5216] munmap(0x7f12f2714000, 262144) = 0 [pid 5216] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5216] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5216] close(3) = 0 [pid 5216] mkdir("./file0", 0777) = 0 [pid 5216] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5216] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5216] ioctl(4, LOOP_CLR_FD) = 0 [pid 5216] close(4) = 0 [pid 5216] exit_group(0) = ? [pid 5216] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5216, si_uid=0, si_status=0, si_utime=0, si_stime=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, 0x5555560a2620 /* 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 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./70/file0") = 0 getdents64(3, 0x5555560a2620 /* 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, child_tidptr=0x5555560a15d0) = 5218 ./strace-static-x86_64: Process 5218 attached [pid 5218] chdir("./71") = 0 [pid 5218] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5218] setpgid(0, 0) = 0 [pid 5218] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5218] write(3, "1000", 4) = 4 [ 61.977186][ T5216] loop0: detected capacity change from 0 to 512 [ 61.987838][ T5216] EXT4-fs (loop0): orphan cleanup on readonly fs [ 61.998511][ T5216] EXT4-fs (loop0): 1 truncate cleaned up [pid 5218] close(3) = 0 [pid 5218] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5218] memfd_create("syzkaller", 0) = 3 [pid 5218] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5218] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5218] munmap(0x7f12f2714000, 262144) = 0 [pid 5218] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5218] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5218] close(3) = 0 [pid 5218] mkdir("./file0", 0777) = 0 [pid 5218] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5218] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5218] ioctl(4, LOOP_CLR_FD) = 0 [pid 5218] close(4) = 0 [pid 5218] exit_group(0) = ? [pid 5218] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5218, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 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, 0x5555560a2620 /* 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 [ 62.063707][ T5218] loop0: detected capacity change from 0 to 512 [ 62.073750][ T5218] EXT4-fs (loop0): orphan cleanup on readonly fs [ 62.083344][ T5218] EXT4-fs (loop0): 1 truncate cleaned up umount2("./71/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./71/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./71") = 0 mkdir("./72", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5220 ./strace-static-x86_64: Process 5220 attached [pid 5220] chdir("./72") = 0 [pid 5220] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5220] setpgid(0, 0) = 0 [pid 5220] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5220] write(3, "1000", 4) = 4 [pid 5220] close(3) = 0 [pid 5220] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5220] memfd_create("syzkaller", 0) = 3 [pid 5220] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5220] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5220] munmap(0x7f12f2714000, 262144) = 0 [pid 5220] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5220] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5220] close(3) = 0 [pid 5220] mkdir("./file0", 0777) = 0 [pid 5220] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5220] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5220] ioctl(4, LOOP_CLR_FD) = 0 [pid 5220] close(4) = 0 [pid 5220] exit_group(0) = ? [pid 5220] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5220, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- 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, 0x5555560a2620 /* 4 entries */, 32768) = 112 [ 62.146796][ T5220] loop0: detected capacity change from 0 to 512 [ 62.157135][ T5220] EXT4-fs (loop0): orphan cleanup on readonly fs [ 62.165790][ T5220] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./72/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5222 ./strace-static-x86_64: Process 5222 attached [pid 5222] chdir("./73") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5222] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5222] ioctl(4, LOOP_CLR_FD) = 0 [pid 5222] close(4) = 0 [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=2 /* 0.02 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, 0x5555560a2620 /* 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 [ 62.231634][ T5222] loop0: detected capacity change from 0 to 512 [ 62.242214][ T5222] EXT4-fs (loop0): orphan cleanup on readonly fs [ 62.251014][ T5222] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./73/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./73") = 0 mkdir("./74", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5224 ./strace-static-x86_64: Process 5224 attached [pid 5224] chdir("./74") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5224] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5224] ioctl(4, LOOP_CLR_FD) = 0 [pid 5224] close(4) = 0 [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=1 /* 0.01 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, 0x5555560a2620 /* 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) [ 62.318578][ T5224] loop0: detected capacity change from 0 to 512 [ 62.330253][ T5224] EXT4-fs (loop0): orphan cleanup on readonly fs [ 62.339319][ T5224] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./74/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./74") = 0 mkdir("./75", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5226 ./strace-static-x86_64: Process 5226 attached [pid 5226] chdir("./75") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5226] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5226] ioctl(4, LOOP_CLR_FD) = 0 [pid 5226] close(4) = 0 [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 */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 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, 0x5555560a2620 /* 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 [ 62.420570][ T5226] loop0: detected capacity change from 0 to 512 [ 62.430332][ T5226] EXT4-fs (loop0): orphan cleanup on readonly fs [ 62.439771][ T5226] EXT4-fs (loop0): 1 truncate cleaned up umount2("./75/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./75/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5228 ./strace-static-x86_64: Process 5228 attached [pid 5228] chdir("./76") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5228] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5228] ioctl(4, LOOP_CLR_FD) = 0 [pid 5228] close(4) = 0 [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=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./76", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./76", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./76/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5230 ./strace-static-x86_64: Process 5230 attached [pid 5230] chdir("./77") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 262144) = 0 [pid 5230] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 62.508743][ T5228] loop0: detected capacity change from 0 to 512 [ 62.520096][ T5228] EXT4-fs (loop0): orphan cleanup on readonly fs [ 62.528630][ T5228] EXT4-fs (loop0): 1 truncate cleaned up [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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5230] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5230] ioctl(4, LOOP_CLR_FD) = 0 [pid 5230] close(4) = 0 [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 */} --- [ 62.585591][ T5230] loop0: detected capacity change from 0 to 512 [ 62.595345][ T5230] EXT4-fs (loop0): orphan cleanup on readonly fs [ 62.603891][ T5230] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./77/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./77") = 0 mkdir("./78", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5232 ./strace-static-x86_64: Process 5232 attached [pid 5232] chdir("./78") = 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 [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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5232] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5232] ioctl(4, LOOP_CLR_FD) = 0 [pid 5232] close(4) = 0 [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=2 /* 0.02 s */} --- 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, 0x5555560a2620 /* 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 [ 62.671616][ T5232] loop0: detected capacity change from 0 to 512 [ 62.681721][ T5232] EXT4-fs (loop0): orphan cleanup on readonly fs [ 62.690801][ T5232] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./78/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5234 ./strace-static-x86_64: Process 5234 attached [pid 5234] chdir("./79") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5234] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5234] ioctl(4, LOOP_CLR_FD) = 0 [pid 5234] close(4) = 0 [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("./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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./79/file0") = 0 getdents64(3, 0x5555560a2620 /* 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./strace-static-x86_64: Process 5236 attached , child_tidptr=0x5555560a15d0) = 5236 [ 62.752105][ T5234] loop0: detected capacity change from 0 to 512 [ 62.762720][ T5234] EXT4-fs (loop0): orphan cleanup on readonly fs [ 62.772115][ T5234] EXT4-fs (loop0): 1 truncate cleaned up [pid 5236] chdir("./80") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5236] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5236] ioctl(4, LOOP_CLR_FD) = 0 [pid 5236] close(4) = 0 [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 */} --- 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, 0x5555560a2620 /* 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 [ 62.842861][ T5236] loop0: detected capacity change from 0 to 512 [ 62.853886][ T5236] EXT4-fs (loop0): orphan cleanup on readonly fs [ 62.862354][ T5236] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./80/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./80") = 0 mkdir("./81", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5238 attached , child_tidptr=0x5555560a15d0) = 5238 [pid 5238] chdir("./81") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 262144) = 0 [pid 5238] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5238] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5238] ioctl(4, LOOP_CLR_FD) = 0 [pid 5238] close(4) = 0 [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=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, 0x5555560a2620 /* 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) [ 62.922949][ T5238] loop0: detected capacity change from 0 to 512 [ 62.933324][ T5238] EXT4-fs (loop0): orphan cleanup on readonly fs [ 62.942285][ T5238] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./81/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5240 ./strace-static-x86_64: Process 5240 attached [pid 5240] chdir("./82") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 262144) = 0 [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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5240] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5240] ioctl(4, LOOP_CLR_FD) = 0 [pid 5240] close(4) = 0 [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=2 /* 0.02 s */} --- 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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./82/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5242 ./strace-static-x86_64: Process 5242 attached [pid 5242] chdir("./83") = 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 [ 63.006022][ T5240] loop0: detected capacity change from 0 to 512 [ 63.015938][ T5240] EXT4-fs (loop0): orphan cleanup on readonly fs [ 63.024846][ T5240] EXT4-fs (loop0): 1 truncate cleaned up [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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5242] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5242] ioctl(4, LOOP_CLR_FD) = 0 [pid 5242] close(4) = 0 [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=2 /* 0.02 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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./83/file0") = 0 getdents64(3, 0x5555560a2620 /* 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 [ 63.074440][ T5242] loop0: detected capacity change from 0 to 512 [ 63.083852][ T5242] EXT4-fs (loop0): orphan cleanup on readonly fs [ 63.092857][ T5242] EXT4-fs (loop0): 1 truncate cleaned up clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5244 ./strace-static-x86_64: Process 5244 attached [pid 5244] chdir("./84") = 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 5244] memfd_create("syzkaller", 0) = 3 [pid 5244] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5244] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5244] ioctl(4, LOOP_CLR_FD) = 0 [pid 5244] close(4) = 0 [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=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./84", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 63.148528][ T5244] loop0: detected capacity change from 0 to 512 [ 63.158708][ T5244] EXT4-fs (loop0): orphan cleanup on readonly fs [ 63.167990][ T5244] 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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./84/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./84") = 0 mkdir("./85", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5246 ./strace-static-x86_64: Process 5246 attached [pid 5246] chdir("./85") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5246] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5246] ioctl(4, LOOP_CLR_FD) = 0 [pid 5246] close(4) = 0 [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=3 /* 0.03 s */} --- 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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./85/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 [ 63.233961][ T5246] loop0: detected capacity change from 0 to 512 [ 63.243435][ T5246] EXT4-fs (loop0): orphan cleanup on readonly fs [ 63.252656][ T5246] EXT4-fs (loop0): 1 truncate cleaned up close(3) = 0 rmdir("./85") = 0 mkdir("./86", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5248 ./strace-static-x86_64: Process 5248 attached [pid 5248] chdir("./86") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 262144) = 0 [pid 5248] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5248] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5248] ioctl(4, LOOP_CLR_FD) = 0 [pid 5248] close(4) = 0 [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=2 /* 0.02 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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./86/file0") = 0 getdents64(3, 0x5555560a2620 /* 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./strace-static-x86_64: Process 5250 attached , child_tidptr=0x5555560a15d0) = 5250 [pid 5250] chdir("./87") = 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) = 0x7f12f2714000 [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 [ 63.311361][ T5248] loop0: detected capacity change from 0 to 512 [ 63.323499][ T5248] EXT4-fs (loop0): orphan cleanup on readonly fs [ 63.332974][ T5248] EXT4-fs (loop0): 1 truncate cleaned up [pid 5250] munmap(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5250] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5250] ioctl(4, LOOP_CLR_FD) = 0 [pid 5250] close(4) = 0 [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("./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, 0x5555560a2620 /* 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 [ 63.394252][ T5250] loop0: detected capacity change from 0 to 512 [ 63.398642][ T5076] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 63.415246][ T5250] EXT4-fs (loop0): orphan cleanup on readonly fs [ 63.424406][ T5250] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./87/file0") = 0 getdents64(3, 0x5555560a2620 /* 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, child_tidptr=0x5555560a15d0) = 5252 ./strace-static-x86_64: Process 5252 attached [pid 5252] chdir("./88") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5252] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5252] ioctl(4, LOOP_CLR_FD) = 0 [pid 5252] close(4) = 0 [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=1 /* 0.01 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, 0x5555560a2620 /* 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 [ 63.500765][ T5252] loop0: detected capacity change from 0 to 512 [ 63.511535][ T5252] EXT4-fs (loop0): orphan cleanup on readonly fs [ 63.520226][ T5252] EXT4-fs (loop0): 1 truncate cleaned up unlink("./88/binderfs") = 0 umount2("./88/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./88/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5254 ./strace-static-x86_64: Process 5254 attached [pid 5254] chdir("./89") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5254] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5254] ioctl(4, LOOP_CLR_FD) = 0 [pid 5254] close(4) = 0 [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=3 /* 0.03 s */} --- 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, 0x5555560a2620 /* 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 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./89/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./89") = 0 [ 63.592008][ T5254] loop0: detected capacity change from 0 to 512 [ 63.601858][ T5254] EXT4-fs (loop0): orphan cleanup on readonly fs [ 63.610954][ T5254] EXT4-fs (loop0): 1 truncate cleaned up mkdir("./90", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5256 ./strace-static-x86_64: Process 5256 attached [pid 5256] chdir("./90") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5256] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5256] ioctl(4, LOOP_CLR_FD) = 0 [pid 5256] close(4) = 0 [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=2 /* 0.02 s */} --- 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, 0x5555560a2620 /* 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 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./90/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5258 ./strace-static-x86_64: Process 5258 attached [pid 5258] chdir("./91") = 0 [pid 5258] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5258] setpgid(0, 0) = 0 [ 63.664533][ T5256] loop0: detected capacity change from 0 to 512 [ 63.675478][ T5256] EXT4-fs (loop0): orphan cleanup on readonly fs [ 63.684824][ T5256] EXT4-fs (loop0): 1 truncate cleaned up [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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5258] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5258] ioctl(4, LOOP_CLR_FD) = 0 [pid 5258] close(4) = 0 [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=3 /* 0.03 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, 0x5555560a2620 /* 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 [ 63.752552][ T5258] loop0: detected capacity change from 0 to 512 [ 63.761881][ T5258] EXT4-fs (loop0): orphan cleanup on readonly fs [ 63.771533][ T5258] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./91/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5260 ./strace-static-x86_64: Process 5260 attached [pid 5260] chdir("./92") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5260] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5260] ioctl(4, LOOP_CLR_FD) = 0 [pid 5260] close(4) = 0 [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=0} --- 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, 0x5555560a2620 /* 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) 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./92/file0") = 0 getdents64(3, 0x5555560a2620 /* 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) [ 63.837887][ T5260] loop0: detected capacity change from 0 to 512 [ 63.848474][ T5260] EXT4-fs (loop0): orphan cleanup on readonly fs [ 63.857763][ T5260] EXT4-fs (loop0): 1 truncate cleaned up close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5262 ./strace-static-x86_64: Process 5262 attached [pid 5262] chdir("./93") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5262] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5262] ioctl(4, LOOP_CLR_FD) = 0 [pid 5262] close(4) = 0 [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=0} --- 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 [ 63.929682][ T5262] loop0: detected capacity change from 0 to 512 [ 63.939706][ T5262] EXT4-fs (loop0): orphan cleanup on readonly fs [ 63.948694][ T5262] EXT4-fs (loop0): 1 truncate cleaned up getdents64(3, 0x5555560a2620 /* 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) 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./93/file0") = 0 getdents64(3, 0x5555560a2620 /* 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./strace-static-x86_64: Process 5264 attached , child_tidptr=0x5555560a15d0) = 5264 [pid 5264] chdir("./94") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5264] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5264] ioctl(4, LOOP_CLR_FD) = 0 [pid 5264] close(4) = 0 [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=2 /* 0.02 s */} --- 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, 0x5555560a2620 /* 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 [ 64.018287][ T5264] loop0: detected capacity change from 0 to 512 [ 64.027661][ T5264] EXT4-fs (loop0): orphan cleanup on readonly fs [ 64.035877][ T5264] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./94/file0") = 0 getdents64(3, 0x5555560a2620 /* 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 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5266 ./strace-static-x86_64: Process 5266 attached [pid 5266] chdir("./95") = 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 [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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5266] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5266] ioctl(4, LOOP_CLR_FD) = 0 [pid 5266] close(4) = 0 [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=0} --- 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, 0x5555560a2620 /* 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 [ 64.098043][ T5266] loop0: detected capacity change from 0 to 512 [ 64.107801][ T5266] EXT4-fs (loop0): orphan cleanup on readonly fs [ 64.117241][ T5266] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./95/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5268 ./strace-static-x86_64: Process 5268 attached [pid 5268] chdir("./96") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5268] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5268] ioctl(4, LOOP_CLR_FD) = 0 [pid 5268] close(4) = 0 [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 */} --- 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, 0x5555560a2620 /* 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 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./96/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5270 ./strace-static-x86_64: Process 5270 attached [pid 5270] chdir("./97") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 262144) = 0 [ 64.181482][ T5268] loop0: detected capacity change from 0 to 512 [ 64.193369][ T5268] EXT4-fs (loop0): orphan cleanup on readonly fs [ 64.202063][ T5268] EXT4-fs (loop0): 1 truncate cleaned up [pid 5270] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5270] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5270] ioctl(4, LOOP_CLR_FD) = 0 [pid 5270] close(4) = 0 [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("./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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 [ 64.263511][ T5270] loop0: detected capacity change from 0 to 512 [ 64.273968][ T5270] EXT4-fs (loop0): orphan cleanup on readonly fs [ 64.282999][ T5270] EXT4-fs (loop0): 1 truncate cleaned up rmdir("./97/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5272 ./strace-static-x86_64: Process 5272 attached [pid 5272] chdir("./98") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5272] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5272] ioctl(4, LOOP_CLR_FD) = 0 [pid 5272] close(4) = 0 [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=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, 0x5555560a2620 /* 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 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./98/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5274 ./strace-static-x86_64: Process 5274 attached [pid 5274] chdir("./99") = 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) = 0x7f12f2714000 [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 [pid 5274] munmap(0x7f12f2714000, 262144) = 0 [pid 5274] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 64.340779][ T5272] loop0: detected capacity change from 0 to 512 [ 64.352198][ T5272] EXT4-fs (loop0): orphan cleanup on readonly fs [ 64.361587][ T5272] EXT4-fs (loop0): 1 truncate cleaned up [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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5274] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5274] ioctl(4, LOOP_CLR_FD) = 0 [pid 5274] close(4) = 0 [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=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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./99/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5276 ./strace-static-x86_64: Process 5276 attached [pid 5276] chdir("./100") = 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 [ 64.421248][ T5274] loop0: detected capacity change from 0 to 512 [ 64.431841][ T5274] EXT4-fs (loop0): orphan cleanup on readonly fs [ 64.442113][ T5274] EXT4-fs (loop0): 1 truncate cleaned up [pid 5276] memfd_create("syzkaller", 0) = 3 [pid 5276] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5276] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5276] ioctl(4, LOOP_CLR_FD) = 0 [pid 5276] close(4) = 0 [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=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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./100/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./100") = 0 mkdir("./101", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5278 attached , child_tidptr=0x5555560a15d0) = 5278 [pid 5278] chdir("./101") = 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) = 0x7f12f2714000 [ 64.509673][ T5276] loop0: detected capacity change from 0 to 512 [ 64.519344][ T5276] EXT4-fs (loop0): orphan cleanup on readonly fs [ 64.529566][ T5276] EXT4-fs (loop0): 1 truncate cleaned up [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5278] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5278] ioctl(4, LOOP_CLR_FD) = 0 [pid 5278] close(4) = 0 [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=2 /* 0.02 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, 0x5555560a2620 /* 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 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./101/file0") = 0 getdents64(3, 0x5555560a2620 /* 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 [ 64.591748][ T5278] loop0: detected capacity change from 0 to 512 [ 64.602524][ T5278] EXT4-fs (loop0): orphan cleanup on readonly fs [ 64.611527][ T5278] EXT4-fs (loop0): 1 truncate cleaned up clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5280 ./strace-static-x86_64: Process 5280 attached [pid 5280] chdir("./102") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5280] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5280] ioctl(4, LOOP_CLR_FD) = 0 [pid 5280] close(4) = 0 [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=2 /* 0.02 s */} --- 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, 0x5555560a2620 /* 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 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./102/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 [ 64.684057][ T5280] loop0: detected capacity change from 0 to 512 [ 64.694163][ T5280] EXT4-fs (loop0): orphan cleanup on readonly fs [ 64.702710][ T5280] EXT4-fs (loop0): 1 truncate cleaned up 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=0x5555560a15d0) = 5282 ./strace-static-x86_64: Process 5282 attached [pid 5282] chdir("./103") = 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 [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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5282] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5282] ioctl(4, LOOP_CLR_FD) = 0 [pid 5282] close(4) = 0 [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=2 /* 0.02 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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./103/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5284 ./strace-static-x86_64: Process 5284 attached [pid 5284] chdir("./104") = 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) = 0x7f12f2714000 [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 [ 64.761969][ T5282] loop0: detected capacity change from 0 to 512 [ 64.773417][ T5282] EXT4-fs (loop0): orphan cleanup on readonly fs [ 64.781937][ T5282] EXT4-fs (loop0): 1 truncate cleaned up [pid 5284] munmap(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5284] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5284] ioctl(4, LOOP_CLR_FD) = 0 [pid 5284] close(4) = 0 [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=1 /* 0.01 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./104/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./104") = 0 mkdir("./105", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 [ 64.847941][ T5284] loop0: detected capacity change from 0 to 512 [ 64.858780][ T5284] EXT4-fs (loop0): orphan cleanup on readonly fs [ 64.867636][ T5284] EXT4-fs (loop0): 1 truncate cleaned up clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5286 ./strace-static-x86_64: Process 5286 attached [pid 5286] chdir("./105") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5286] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5286] ioctl(4, LOOP_CLR_FD) = 0 [pid 5286] close(4) = 0 [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=1 /* 0.01 s */} --- 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, 0x5555560a2620 /* 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 [ 64.938687][ T5286] loop0: detected capacity change from 0 to 512 [ 64.948275][ T5286] EXT4-fs (loop0): orphan cleanup on readonly fs [ 64.957360][ T5286] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./105/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5288 ./strace-static-x86_64: Process 5288 attached [pid 5288] chdir("./106") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5288] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5288] ioctl(4, LOOP_CLR_FD) = 0 [pid 5288] close(4) = 0 [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=0} --- umount2("./106", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 65.027000][ T5288] loop0: detected capacity change from 0 to 512 [ 65.037484][ T5288] EXT4-fs (loop0): orphan cleanup on readonly fs [ 65.047268][ T5288] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./106/file0") = 0 getdents64(3, 0x5555560a2620 /* 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, child_tidptr=0x5555560a15d0) = 5290 ./strace-static-x86_64: Process 5290 attached [pid 5290] chdir("./107") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5290] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5290] ioctl(4, LOOP_CLR_FD) = 0 [pid 5290] close(4) = 0 [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=0} --- 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, 0x5555560a2620 /* 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 [ 65.127130][ T5290] loop0: detected capacity change from 0 to 512 [ 65.137191][ T5290] EXT4-fs (loop0): orphan cleanup on readonly fs [ 65.146789][ T5290] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./107/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 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=0x5555560a15d0) = 5292 ./strace-static-x86_64: Process 5292 attached [pid 5292] chdir("./108") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5292] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5292] ioctl(4, LOOP_CLR_FD) = 0 [pid 5292] close(4) = 0 [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=2 /* 0.02 s */} --- 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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 [ 65.213530][ T5292] loop0: detected capacity change from 0 to 512 [ 65.223632][ T5292] EXT4-fs (loop0): orphan cleanup on readonly fs [ 65.232740][ T5292] EXT4-fs (loop0): 1 truncate cleaned up rmdir("./108/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./108") = 0 mkdir("./109", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5294 ./strace-static-x86_64: Process 5294 attached [pid 5294] chdir("./109") = 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) = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5294] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5294] ioctl(4, LOOP_CLR_FD) = 0 [pid 5294] close(4) = 0 [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=1 /* 0.01 s */, si_stime=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, 0x5555560a2620 /* 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 [ 65.299565][ T5294] loop0: detected capacity change from 0 to 512 [ 65.309837][ T5294] EXT4-fs (loop0): orphan cleanup on readonly fs [ 65.318977][ T5294] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./109/file0") = 0 getdents64(3, 0x5555560a2620 /* 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) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5296 ./strace-static-x86_64: Process 5296 attached [pid 5296] chdir("./110") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5296] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5296] ioctl(4, LOOP_CLR_FD) = 0 [pid 5296] close(4) = 0 [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 */} --- 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, 0x5555560a2620 /* 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 [ 65.380138][ T5296] loop0: detected capacity change from 0 to 512 [ 65.390106][ T5296] EXT4-fs (loop0): orphan cleanup on readonly fs [ 65.399181][ T5296] 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./110/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./110") = 0 mkdir("./111", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5298 ./strace-static-x86_64: Process 5298 attached [pid 5298] chdir("./111") = 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 [pid 5298] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5298] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5298] ioctl(4, LOOP_CLR_FD) = 0 [pid 5298] close(4) = 0 [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=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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./111/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5300 ./strace-static-x86_64: Process 5300 attached [pid 5300] chdir("./112") = 0 [ 65.471722][ T5298] loop0: detected capacity change from 0 to 512 [ 65.482285][ T5298] EXT4-fs (loop0): orphan cleanup on readonly fs [ 65.491656][ T5298] EXT4-fs (loop0): 1 truncate cleaned up [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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5300] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5300] ioctl(4, LOOP_CLR_FD) = 0 [pid 5300] close(4) = 0 [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=2 /* 0.02 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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./112/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./112") = 0 mkdir("./113", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5302 [ 65.560428][ T5300] loop0: detected capacity change from 0 to 512 [ 65.571139][ T5300] EXT4-fs (loop0): orphan cleanup on readonly fs [ 65.580530][ T5300] EXT4-fs (loop0): 1 truncate cleaned up ./strace-static-x86_64: Process 5302 attached [pid 5302] chdir("./113") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5302] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5302] ioctl(4, LOOP_CLR_FD) = 0 [pid 5302] close(4) = 0 [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=1 /* 0.01 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, 0x5555560a2620 /* 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 [ 65.649573][ T5302] loop0: detected capacity change from 0 to 512 [ 65.659595][ T5302] EXT4-fs (loop0): orphan cleanup on readonly fs [ 65.668388][ T5302] 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./113/file0") = 0 getdents64(3, 0x5555560a2620 /* 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./strace-static-x86_64: Process 5304 attached , child_tidptr=0x5555560a15d0) = 5304 [pid 5304] chdir("./114") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5304] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5304] ioctl(4, LOOP_CLR_FD) = 0 [pid 5304] close(4) = 0 [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=1 /* 0.01 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, 0x5555560a2620 /* 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 [ 65.740183][ T5304] loop0: detected capacity change from 0 to 512 [ 65.749682][ T5304] EXT4-fs (loop0): orphan cleanup on readonly fs [ 65.758468][ T5304] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./114/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./114") = 0 mkdir("./115", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5306 ./strace-static-x86_64: Process 5306 attached [pid 5306] chdir("./115") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5306] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5306] ioctl(4, LOOP_CLR_FD) = 0 [pid 5306] close(4) = 0 [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=2 /* 0.02 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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./115/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./115") = 0 mkdir("./116", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 [ 65.824850][ T5306] loop0: detected capacity change from 0 to 512 [ 65.836976][ T5306] EXT4-fs (loop0): orphan cleanup on readonly fs [ 65.845452][ T5306] EXT4-fs (loop0): 1 truncate cleaned up clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5308 ./strace-static-x86_64: Process 5308 attached [pid 5308] chdir("./116") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5308] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5308] ioctl(4, LOOP_CLR_FD) = 0 [pid 5308] close(4) = 0 [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("./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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./116/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./116") = 0 mkdir("./117", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 [ 65.914945][ T5308] loop0: detected capacity change from 0 to 512 [ 65.925931][ T5308] EXT4-fs (loop0): orphan cleanup on readonly fs [ 65.935787][ T5308] EXT4-fs (loop0): 1 truncate cleaned up clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5310 ./strace-static-x86_64: Process 5310 attached [pid 5310] chdir("./117") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5310] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5310] ioctl(4, LOOP_CLR_FD) = 0 [pid 5310] close(4) = 0 [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("./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, 0x5555560a2620 /* 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) [ 66.007701][ T5310] loop0: detected capacity change from 0 to 512 [ 66.017715][ T5310] EXT4-fs (loop0): orphan cleanup on readonly fs [ 66.027092][ T5310] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./117/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5312 ./strace-static-x86_64: Process 5312 attached [pid 5312] chdir("./118") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5312] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5312] ioctl(4, LOOP_CLR_FD) = 0 [pid 5312] close(4) = 0 [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=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, 0x5555560a2620 /* 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 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./118/file0") = 0 getdents64(3, 0x5555560a2620 /* 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./strace-static-x86_64: Process 5314 attached , child_tidptr=0x5555560a15d0) = 5314 [pid 5314] chdir("./119") = 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 [ 66.096032][ T5312] loop0: detected capacity change from 0 to 512 [ 66.105660][ T5312] EXT4-fs (loop0): orphan cleanup on readonly fs [ 66.113945][ T5312] EXT4-fs (loop0): 1 truncate cleaned up [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) = 0x7f12f2714000 [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(0x7f12f2714000, 262144) = 0 [pid 5314] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5314] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5314] ioctl(4, LOOP_CLR_FD) = 0 [pid 5314] close(4) = 0 [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=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./119", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./119", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x5555560a2620 /* 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 [ 66.162756][ T5314] loop0: detected capacity change from 0 to 512 [ 66.172223][ T5314] EXT4-fs (loop0): orphan cleanup on readonly fs [ 66.181814][ T5314] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./119/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5316 ./strace-static-x86_64: Process 5316 attached [pid 5316] chdir("./120") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5316] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5316] ioctl(4, LOOP_CLR_FD) = 0 [pid 5316] close(4) = 0 [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=1 /* 0.01 s */} --- 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, 0x5555560a2620 /* 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 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./120/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./120") = 0 mkdir("./121", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 [ 66.245290][ T5316] loop0: detected capacity change from 0 to 512 [ 66.257683][ T5316] EXT4-fs (loop0): orphan cleanup on readonly fs [ 66.267638][ T5316] EXT4-fs (loop0): 1 truncate cleaned up clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5318 ./strace-static-x86_64: Process 5318 attached [pid 5318] chdir("./121") = 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 [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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5318] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5318] ioctl(4, LOOP_CLR_FD) = 0 [pid 5318] close(4) = 0 [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=1 /* 0.01 s */} --- 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, 0x5555560a2620 /* 4 entries */, 32768) = 112 [ 66.339172][ T5318] loop0: detected capacity change from 0 to 512 [ 66.349700][ T5318] EXT4-fs (loop0): orphan cleanup on readonly fs [ 66.358337][ T5318] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./121/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5320 ./strace-static-x86_64: Process 5320 attached [pid 5320] chdir("./122") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5320] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5320] ioctl(4, LOOP_CLR_FD) = 0 [pid 5320] close(4) = 0 [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=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, 0x5555560a2620 /* 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) [ 66.423118][ T5320] loop0: detected capacity change from 0 to 512 [ 66.433087][ T5320] EXT4-fs (loop0): orphan cleanup on readonly fs [ 66.442305][ T5320] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./122/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./122") = 0 mkdir("./123", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5322 ./strace-static-x86_64: Process 5322 attached [pid 5322] chdir("./123") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 262144) = 0 [pid 5322] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5322] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5322] close(3) = 0 [pid 5322] mkdir("./file0", 0777) = 0 [pid 5322] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5322] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5322] ioctl(4, LOOP_CLR_FD) = 0 [pid 5322] close(4) = 0 [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=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./123", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./123", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./123/file0") = 0 getdents64(3, 0x5555560a2620 /* 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) [ 66.502269][ T5322] loop0: detected capacity change from 0 to 512 [ 66.503193][ T5076] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 66.521705][ T5322] EXT4-fs (loop0): orphan cleanup on readonly fs [ 66.531201][ T5322] EXT4-fs (loop0): 1 truncate cleaned up close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5324 ./strace-static-x86_64: Process 5324 attached [pid 5324] chdir("./124") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5324] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5324] ioctl(4, LOOP_CLR_FD) = 0 [pid 5324] close(4) = 0 [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=2 /* 0.02 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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./124/file0") = 0 getdents64(3, 0x5555560a2620 /* 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) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5326 ./strace-static-x86_64: Process 5326 attached [pid 5326] chdir("./125") = 0 [ 66.591848][ T5324] loop0: detected capacity change from 0 to 512 [ 66.601286][ T5324] EXT4-fs (loop0): orphan cleanup on readonly fs [ 66.610438][ T5324] EXT4-fs (loop0): 1 truncate cleaned up [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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5326] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5326] ioctl(4, LOOP_CLR_FD) = 0 [pid 5326] close(4) = 0 [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=2 /* 0.02 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, 0x5555560a2620 /* 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 [ 66.674105][ T5326] loop0: detected capacity change from 0 to 512 [ 66.685911][ T5326] EXT4-fs (loop0): orphan cleanup on readonly fs [ 66.695399][ T5326] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./125/file0") = 0 getdents64(3, 0x5555560a2620 /* 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 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5328 ./strace-static-x86_64: Process 5328 attached [pid 5328] chdir("./126") = 0 [pid 5328] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5328] setpgid(0, 0) = 0 [pid 5328] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5328] write(3, "1000", 4) = 4 [pid 5328] close(3) = 0 [pid 5328] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5328] memfd_create("syzkaller", 0) = 3 [pid 5328] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5328] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5328] ioctl(4, LOOP_CLR_FD) = 0 [pid 5328] close(4) = 0 [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=0} --- [ 66.788133][ T5328] loop0: detected capacity change from 0 to 512 [ 66.798399][ T5328] EXT4-fs (loop0): orphan cleanup on readonly fs [ 66.807085][ T5328] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./126/file0") = 0 getdents64(3, 0x5555560a2620 /* 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, child_tidptr=0x5555560a15d0) = 5330 ./strace-static-x86_64: Process 5330 attached [pid 5330] chdir("./127") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5330] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5330] ioctl(4, LOOP_CLR_FD) = 0 [pid 5330] close(4) = 0 [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=2 /* 0.02 s */} --- 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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 [ 66.873362][ T5330] loop0: detected capacity change from 0 to 512 [ 66.883087][ T5330] EXT4-fs (loop0): orphan cleanup on readonly fs [ 66.892011][ T5330] EXT4-fs (loop0): 1 truncate cleaned up close(4) = 0 rmdir("./127/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./127") = 0 mkdir("./128", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5332 ./strace-static-x86_64: Process 5332 attached [pid 5332] chdir("./128") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5332] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5332] ioctl(4, LOOP_CLR_FD) = 0 [pid 5332] close(4) = 0 [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=2 /* 0.02 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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./128/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5334 ./strace-static-x86_64: Process 5334 attached [pid 5334] chdir("./129") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 262144) = 0 [pid 5334] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 66.954183][ T5332] loop0: detected capacity change from 0 to 512 [ 66.965105][ T5332] EXT4-fs (loop0): orphan cleanup on readonly fs [ 66.973909][ T5332] EXT4-fs (loop0): 1 truncate cleaned up [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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5334] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5334] ioctl(4, LOOP_CLR_FD) = 0 [pid 5334] close(4) = 0 [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 */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./129", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 67.028468][ T5334] loop0: detected capacity change from 0 to 512 [ 67.038359][ T5334] EXT4-fs (loop0): orphan cleanup on readonly fs [ 67.046764][ T5334] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x5555560a2620 /* 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 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./129/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5336 ./strace-static-x86_64: Process 5336 attached [pid 5336] chdir("./130") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5336] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5336] ioctl(4, LOOP_CLR_FD) = 0 [pid 5336] close(4) = 0 [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=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./130/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 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, child_tidptr=0x5555560a15d0) = 5338 ./strace-static-x86_64: Process 5338 attached [pid 5338] chdir("./131") = 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 [ 67.115020][ T5336] loop0: detected capacity change from 0 to 512 [ 67.125603][ T5336] EXT4-fs (loop0): orphan cleanup on readonly fs [ 67.134142][ T5336] EXT4-fs (loop0): 1 truncate cleaned up [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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5338] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5338] ioctl(4, LOOP_CLR_FD) = 0 [pid 5338] close(4) = 0 [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=2 /* 0.02 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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./131/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5340 ./strace-static-x86_64: Process 5340 attached [pid 5340] chdir("./132") = 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) = 0x7f12f2714000 [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 [ 67.183122][ T5338] loop0: detected capacity change from 0 to 512 [ 67.193837][ T5338] EXT4-fs (loop0): orphan cleanup on readonly fs [ 67.203024][ T5338] EXT4-fs (loop0): 1 truncate cleaned up [pid 5340] munmap(0x7f12f2714000, 262144) = 0 [pid 5340] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5340] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5340] close(3) = 0 [pid 5340] mkdir("./file0", 0777) = 0 [pid 5340] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5340] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5340] ioctl(4, LOOP_CLR_FD) = 0 [pid 5340] close(4) = 0 [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=2 /* 0.02 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, 0x5555560a2620 /* 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 [ 67.265802][ T5340] loop0: detected capacity change from 0 to 512 [ 67.274943][ T5340] EXT4-fs (loop0): orphan cleanup on readonly fs [ 67.284078][ T5340] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./132/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5342 ./strace-static-x86_64: Process 5342 attached [pid 5342] chdir("./133") = 0 [pid 5342] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5342] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5342] ioctl(4, LOOP_CLR_FD) = 0 [pid 5342] close(4) = 0 [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("./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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./133/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5344 [ 67.344512][ T5342] loop0: detected capacity change from 0 to 512 [ 67.364088][ T5342] EXT4-fs (loop0): orphan cleanup on readonly fs [ 67.375022][ T5342] EXT4-fs (loop0): 1 truncate cleaned up ./strace-static-x86_64: Process 5344 attached [pid 5344] chdir("./134") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5344] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5344] ioctl(4, LOOP_CLR_FD) = 0 [pid 5344] close(4) = 0 [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=4 /* 0.04 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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./134/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./134") = 0 mkdir("./135", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5346 ./strace-static-x86_64: Process 5346 attached [pid 5346] chdir("./135") = 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) = 0x7f12f2714000 [ 67.451071][ T5344] loop0: detected capacity change from 0 to 512 [ 67.462339][ T5344] EXT4-fs (loop0): orphan cleanup on readonly fs [ 67.471208][ T5344] EXT4-fs (loop0): 1 truncate cleaned up [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5346] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5346] ioctl(4, LOOP_CLR_FD) = 0 [pid 5346] close(4) = 0 [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=2 /* 0.02 s */} --- 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, 0x5555560a2620 /* 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 getdents64(4, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./135/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5348 ./strace-static-x86_64: Process 5348 attached [pid 5348] chdir("./136") = 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 [ 67.535626][ T5346] loop0: detected capacity change from 0 to 512 [ 67.545378][ T5346] EXT4-fs (loop0): orphan cleanup on readonly fs [ 67.553769][ T5346] EXT4-fs (loop0): 1 truncate cleaned up [pid 5348] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5348] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5348] ioctl(4, LOOP_CLR_FD) = 0 [pid 5348] close(4) = 0 [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 */} --- 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 [ 67.601067][ T5348] loop0: detected capacity change from 0 to 512 [ 67.611704][ T5348] EXT4-fs (loop0): orphan cleanup on readonly fs [ 67.620567][ T5348] EXT4-fs (loop0): 1 truncate cleaned up getdents64(3, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./136/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./136") = 0 mkdir("./137", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5350 ./strace-static-x86_64: Process 5350 attached [pid 5350] chdir("./137") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5350] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5350] ioctl(4, LOOP_CLR_FD) = 0 [pid 5350] close(4) = 0 [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=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, 0x5555560a2620 /* 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 [ 67.681209][ T5350] loop0: detected capacity change from 0 to 512 [ 67.683107][ T5076] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 67.702635][ T5350] EXT4-fs (loop0): orphan cleanup on readonly fs [ 67.710976][ T5350] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./137/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5352 ./strace-static-x86_64: Process 5352 attached [pid 5352] chdir("./138") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 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 [pid 5352] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5352] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5352] ioctl(4, LOOP_CLR_FD) = 0 [pid 5352] close(4) = 0 [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=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, 0x5555560a2620 /* 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 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./138/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./138") = 0 mkdir("./139", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5354 ./strace-static-x86_64: Process 5354 attached [pid 5354] chdir("./139") = 0 [pid 5354] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [ 67.785341][ T5352] loop0: detected capacity change from 0 to 512 [ 67.795851][ T5352] EXT4-fs (loop0): orphan cleanup on readonly fs [ 67.804552][ T5352] EXT4-fs (loop0): 1 truncate cleaned up [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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [ 67.856416][ T5354] loop0: detected capacity change from 0 to 512 [ 67.867182][ T5354] EXT4-fs (loop0): orphan cleanup on readonly fs [ 67.875787][ T5354] EXT4-fs (loop0): 1 truncate cleaned up [pid 5354] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5354] ioctl(4, LOOP_CLR_FD) = 0 [pid 5354] close(4) = 0 [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=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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./139/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5356 ./strace-static-x86_64: Process 5356 attached [pid 5356] chdir("./140") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5356] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5356] ioctl(4, LOOP_CLR_FD) = 0 [pid 5356] close(4) = 0 [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=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 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, 0x5555560a2620 /* 4 entries */, 32768) = 112 [ 67.961169][ T5356] loop0: detected capacity change from 0 to 512 [ 67.972309][ T5356] EXT4-fs (loop0): orphan cleanup on readonly fs [ 67.980520][ T5356] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./140/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./140") = 0 mkdir("./141", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5358 ./strace-static-x86_64: Process 5358 attached [pid 5358] chdir("./141") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 262144) = 0 [pid 5358] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5358] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5358] ioctl(4, LOOP_CLR_FD) = 0 [pid 5358] close(4) = 0 [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=1 /* 0.01 s */} --- 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 [ 68.049096][ T5358] loop0: detected capacity change from 0 to 512 [ 68.058991][ T5358] EXT4-fs (loop0): orphan cleanup on readonly fs [ 68.067656][ T5358] EXT4-fs (loop0): 1 truncate cleaned up getdents64(3, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./141/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5360 ./strace-static-x86_64: Process 5360 attached [pid 5360] chdir("./142") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5360] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5360] ioctl(4, LOOP_CLR_FD) = 0 [pid 5360] close(4) = 0 [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=1 /* 0.01 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./142", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 68.137186][ T5360] loop0: detected capacity change from 0 to 512 [ 68.148280][ T5360] EXT4-fs (loop0): orphan cleanup on readonly fs [ 68.157423][ T5360] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x5555560a2620 /* 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./142/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5362 ./strace-static-x86_64: Process 5362 attached [pid 5362] chdir("./143") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5362] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5362] ioctl(4, LOOP_CLR_FD) = 0 [pid 5362] close(4) = 0 [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=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, 0x5555560a2620 /* 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 [ 68.248256][ T5362] loop0: detected capacity change from 0 to 512 [ 68.257925][ T5362] EXT4-fs (loop0): orphan cleanup on readonly fs [ 68.266459][ T5362] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./143/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5364 ./strace-static-x86_64: Process 5364 attached [pid 5364] chdir("./144") = 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) = 0x7f12f2714000 [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 [pid 5364] munmap(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5364] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5364] ioctl(4, LOOP_CLR_FD) = 0 [pid 5364] close(4) = 0 [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=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 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, 0x5555560a2620 /* 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 [ 68.331825][ T5364] loop0: detected capacity change from 0 to 512 [ 68.341626][ T5364] EXT4-fs (loop0): orphan cleanup on readonly fs [ 68.350839][ T5364] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./144/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5366 ./strace-static-x86_64: Process 5366 attached [pid 5366] chdir("./145") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 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|MS_MANDLOCK, ",errors=continue") = 0 [pid 5366] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5366] ioctl(4, LOOP_CLR_FD) = 0 [pid 5366] close(4) = 0 [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 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, 0x5555560a2620 /* 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 [ 68.422472][ T5366] loop0: detected capacity change from 0 to 512 [ 68.432854][ T5366] EXT4-fs (loop0): orphan cleanup on readonly fs [ 68.441534][ T5366] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./145/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5368 ./strace-static-x86_64: Process 5368 attached [pid 5368] chdir("./146") = 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) = 0x7f12f2714000 [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(0x7f12f2714000, 262144) = 0 [pid 5368] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5368] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5368] close(3) = 0 [pid 5368] mkdir("./file0", 0777) = 0 [pid 5368] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5368] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5368] ioctl(4, LOOP_CLR_FD) = 0 [pid 5368] close(4) = 0 [pid 5368] exit_group(0) = ? [pid 5368] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5368, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- 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, 0x5555560a2620 /* 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 [ 68.509896][ T5368] loop0: detected capacity change from 0 to 512 [ 68.519796][ T5368] EXT4-fs (loop0): orphan cleanup on readonly fs [ 68.528856][ T5368] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./146/file0") = 0 getdents64(3, 0x5555560a2620 /* 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=0x5555560a15d0) = 5370 ./strace-static-x86_64: Process 5370 attached [pid 5370] chdir("./147") = 0 [pid 5370] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5370] setpgid(0, 0) = 0 [pid 5370] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5370] write(3, "1000", 4) = 4 [pid 5370] close(3) = 0 [pid 5370] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5370] memfd_create("syzkaller", 0) = 3 [pid 5370] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5370] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5370] munmap(0x7f12f2714000, 262144) = 0 [pid 5370] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5370] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5370] close(3) = 0 [pid 5370] mkdir("./file0", 0777) = 0 [pid 5370] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5370] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5370] ioctl(4, LOOP_CLR_FD) = 0 [pid 5370] close(4) = 0 [pid 5370] exit_group(0) = ? [pid 5370] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5370, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./147", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./147", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [ 68.588713][ T5370] loop0: detected capacity change from 0 to 512 [ 68.598574][ T5370] EXT4-fs (loop0): orphan cleanup on readonly fs [ 68.607985][ T5370] EXT4-fs (loop0): 1 truncate cleaned up fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x5555560a2620 /* 4 entries */, 32768) = 112 umount2("./147/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./147/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./147/binderfs") = 0 umount2("./147/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./147/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./147/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./147/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./147/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./147/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./147") = 0 mkdir("./148", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_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 5372 attached [pid 5372] chdir("./148" [pid 5074] <... clone resumed>, child_tidptr=0x5555560a15d0) = 5372 [pid 5372] <... chdir resumed>) = 0 [pid 5372] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5372] setpgid(0, 0) = 0 [pid 5372] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5372] write(3, "1000", 4) = 4 [pid 5372] close(3) = 0 [pid 5372] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5372] memfd_create("syzkaller", 0) = 3 [pid 5372] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5372] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5372] munmap(0x7f12f2714000, 262144) = 0 [pid 5372] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5372] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5372] close(3) = 0 [pid 5372] mkdir("./file0", 0777) = 0 [pid 5372] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5372] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5372] ioctl(4, LOOP_CLR_FD) = 0 [pid 5372] close(4) = 0 [pid 5372] exit_group(0) = ? [pid 5372] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5372, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- umount2("./148", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./148", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x5555560a2620 /* 4 entries */, 32768) = 112 umount2("./148/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./148/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./148/binderfs") = 0 [ 68.678690][ T5372] loop0: detected capacity change from 0 to 512 [ 68.690060][ T5372] EXT4-fs (loop0): orphan cleanup on readonly fs [ 68.698232][ T5372] EXT4-fs (loop0): 1 truncate cleaned up umount2("./148/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./148/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./148/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./148/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./148/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./148/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./148") = 0 mkdir("./149", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5374 ./strace-static-x86_64: Process 5374 attached [pid 5374] chdir("./149") = 0 [pid 5374] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5374] setpgid(0, 0) = 0 [pid 5374] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5374] write(3, "1000", 4) = 4 [pid 5374] close(3) = 0 [pid 5374] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5374] memfd_create("syzkaller", 0) = 3 [pid 5374] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5374] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5374] munmap(0x7f12f2714000, 262144) = 0 [pid 5374] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5374] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5374] close(3) = 0 [pid 5374] mkdir("./file0", 0777) = 0 [pid 5374] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5374] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5374] ioctl(4, LOOP_CLR_FD) = 0 [pid 5374] close(4) = 0 [pid 5374] exit_group(0) = ? [pid 5374] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5374, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./149", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./149", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x5555560a2620 /* 4 entries */, 32768) = 112 umount2("./149/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./149/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./149/binderfs") = 0 [ 68.751670][ T5374] loop0: detected capacity change from 0 to 512 [ 68.761310][ T5374] EXT4-fs (loop0): orphan cleanup on readonly fs [ 68.770109][ T5374] EXT4-fs (loop0): 1 truncate cleaned up umount2("./149/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./149/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./149/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./149/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./149/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./149/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./149") = 0 mkdir("./150", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5376 ./strace-static-x86_64: Process 5376 attached [pid 5376] chdir("./150") = 0 [pid 5376] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5376] setpgid(0, 0) = 0 [pid 5376] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5376] write(3, "1000", 4) = 4 [pid 5376] close(3) = 0 [pid 5376] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5376] memfd_create("syzkaller", 0) = 3 [pid 5376] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5376] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5376] munmap(0x7f12f2714000, 262144) = 0 [pid 5376] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5376] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5376] close(3) = 0 [pid 5376] mkdir("./file0", 0777) = 0 [pid 5376] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5376] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5376] ioctl(4, LOOP_CLR_FD) = 0 [pid 5376] close(4) = 0 [pid 5376] exit_group(0) = ? [pid 5376] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5376, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- umount2("./150", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./150", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x5555560a2620 /* 4 entries */, 32768) = 112 umount2("./150/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./150/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./150/binderfs") = 0 umount2("./150/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./150/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./150/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./150/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./150/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./150/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./150") = 0 mkdir("./151", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5378 ./strace-static-x86_64: Process 5378 attached [pid 5378] chdir("./151") = 0 [pid 5378] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5378] setpgid(0, 0) = 0 [pid 5378] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5378] write(3, "1000", 4) = 4 [pid 5378] close(3) = 0 [pid 5378] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5378] memfd_create("syzkaller", 0) = 3 [pid 5378] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5378] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5378] munmap(0x7f12f2714000, 262144) = 0 [pid 5378] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 68.833365][ T5376] loop0: detected capacity change from 0 to 512 [ 68.844255][ T5376] EXT4-fs (loop0): orphan cleanup on readonly fs [ 68.853325][ T5376] EXT4-fs (loop0): 1 truncate cleaned up [pid 5378] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5378] close(3) = 0 [pid 5378] mkdir("./file0", 0777) = 0 [pid 5378] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5378] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5378] ioctl(4, LOOP_CLR_FD) = 0 [pid 5378] close(4) = 0 [pid 5378] exit_group(0) = ? [pid 5378] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5378, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./151", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./151", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x5555560a2620 /* 4 entries */, 32768) = 112 umount2("./151/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./151/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./151/binderfs") = 0 [ 68.912786][ T5378] loop0: detected capacity change from 0 to 512 [ 68.922184][ T5378] EXT4-fs (loop0): orphan cleanup on readonly fs [ 68.931118][ T5378] EXT4-fs (loop0): 1 truncate cleaned up umount2("./151/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./151/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./151/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./151/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./151/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./151/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./151") = 0 mkdir("./152", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5380 ./strace-static-x86_64: Process 5380 attached [pid 5380] chdir("./152") = 0 [pid 5380] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5380] setpgid(0, 0) = 0 [pid 5380] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5380] write(3, "1000", 4) = 4 [pid 5380] close(3) = 0 [pid 5380] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5380] memfd_create("syzkaller", 0) = 3 [pid 5380] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5380] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5380] munmap(0x7f12f2714000, 262144) = 0 [pid 5380] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5380] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5380] close(3) = 0 [pid 5380] mkdir("./file0", 0777) = 0 [pid 5380] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5380] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5380] ioctl(4, LOOP_CLR_FD) = 0 [pid 5380] close(4) = 0 [pid 5380] exit_group(0) = ? [pid 5380] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5380, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./152", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./152", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x5555560a2620 /* 4 entries */, 32768) = 112 umount2("./152/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./152/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./152/binderfs") = 0 umount2("./152/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./152/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./152/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./152/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./152/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./152/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./152") = 0 mkdir("./153", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5382 ./strace-static-x86_64: Process 5382 attached [pid 5382] chdir("./153") = 0 [pid 5382] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5382] setpgid(0, 0) = 0 [pid 5382] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5382] write(3, "1000", 4) = 4 [pid 5382] close(3) = 0 [pid 5382] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5382] memfd_create("syzkaller", 0) = 3 [pid 5382] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5382] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 [ 69.000113][ T5380] loop0: detected capacity change from 0 to 512 [ 69.010480][ T5380] EXT4-fs (loop0): orphan cleanup on readonly fs [ 69.018906][ T5380] EXT4-fs (loop0): 1 truncate cleaned up [pid 5382] munmap(0x7f12f2714000, 262144) = 0 [pid 5382] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5382] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5382] close(3) = 0 [pid 5382] mkdir("./file0", 0777) = 0 [pid 5382] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5382] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5382] ioctl(4, LOOP_CLR_FD) = 0 [pid 5382] close(4) = 0 [pid 5382] exit_group(0) = ? [pid 5382] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5382, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./153", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./153", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x5555560a2620 /* 4 entries */, 32768) = 112 umount2("./153/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./153/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./153/binderfs") = 0 umount2("./153/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./153/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./153/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./153/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./153/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./153/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./153") = 0 mkdir("./154", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5384 ./strace-static-x86_64: Process 5384 attached [pid 5384] chdir("./154") = 0 [pid 5384] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5384] setpgid(0, 0) = 0 [pid 5384] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5384] write(3, "1000", 4) = 4 [pid 5384] close(3) = 0 [pid 5384] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5384] memfd_create("syzkaller", 0) = 3 [pid 5384] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5384] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5384] munmap(0x7f12f2714000, 262144) = 0 [pid 5384] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 69.062385][ T5382] loop0: detected capacity change from 0 to 512 [ 69.073644][ T5382] EXT4-fs (loop0): orphan cleanup on readonly fs [ 69.082382][ T5382] EXT4-fs (loop0): 1 truncate cleaned up [pid 5384] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5384] close(3) = 0 [pid 5384] mkdir("./file0", 0777) = 0 [pid 5384] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5384] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5384] ioctl(4, LOOP_CLR_FD) = 0 [pid 5384] close(4) = 0 [pid 5384] exit_group(0) = ? [pid 5384] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5384, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./154", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./154", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x5555560a2620 /* 4 entries */, 32768) = 112 umount2("./154/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./154/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./154/binderfs") = 0 umount2("./154/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./154/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./154/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./154/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./154/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./154/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./154") = 0 mkdir("./155", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5386 [ 69.142442][ T5384] loop0: detected capacity change from 0 to 512 [ 69.144471][ T5076] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 69.163394][ T5384] EXT4-fs (loop0): orphan cleanup on readonly fs [ 69.172957][ T5384] EXT4-fs (loop0): 1 truncate cleaned up ./strace-static-x86_64: Process 5386 attached [pid 5386] chdir("./155") = 0 [pid 5386] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5386] setpgid(0, 0) = 0 [pid 5386] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5386] write(3, "1000", 4) = 4 [pid 5386] close(3) = 0 [pid 5386] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5386] memfd_create("syzkaller", 0) = 3 [pid 5386] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5386] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5386] munmap(0x7f12f2714000, 262144) = 0 [pid 5386] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5386] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5386] close(3) = 0 [pid 5386] mkdir("./file0", 0777) = 0 [pid 5386] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5386] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5386] ioctl(4, LOOP_CLR_FD) = 0 [pid 5386] close(4) = 0 [pid 5386] exit_group(0) = ? [pid 5386] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5386, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./155", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./155", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x5555560a2620 /* 4 entries */, 32768) = 112 umount2("./155/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./155/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./155/binderfs") = 0 umount2("./155/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [ 69.233735][ T5386] loop0: detected capacity change from 0 to 512 [ 69.243235][ T5386] EXT4-fs (loop0): orphan cleanup on readonly fs [ 69.251538][ T5386] EXT4-fs (loop0): 1 truncate cleaned up umount2("./155/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./155/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./155/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./155/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./155/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./155") = 0 mkdir("./156", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5388 ./strace-static-x86_64: Process 5388 attached [pid 5388] chdir("./156") = 0 [pid 5388] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5388] setpgid(0, 0) = 0 [pid 5388] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5388] write(3, "1000", 4) = 4 [pid 5388] close(3) = 0 [pid 5388] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5388] memfd_create("syzkaller", 0) = 3 [pid 5388] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5388] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5388] munmap(0x7f12f2714000, 262144) = 0 [pid 5388] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5388] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5388] close(3) = 0 [pid 5388] mkdir("./file0", 0777) = 0 [pid 5388] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5388] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5388] ioctl(4, LOOP_CLR_FD) = 0 [pid 5388] close(4) = 0 [pid 5388] exit_group(0) = ? [pid 5388] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5388, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- umount2("./156", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./156", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x5555560a2620 /* 4 entries */, 32768) = 112 umount2("./156/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./156/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./156/binderfs") = 0 umount2("./156/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./156/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./156/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./156/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./156/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./156/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./156") = 0 mkdir("./157", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5390 ./strace-static-x86_64: Process 5390 attached [pid 5390] chdir("./157") = 0 [pid 5390] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5390] setpgid(0, 0) = 0 [pid 5390] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5390] write(3, "1000", 4) = 4 [pid 5390] close(3) = 0 [pid 5390] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5390] memfd_create("syzkaller", 0) = 3 [pid 5390] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5390] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5390] munmap(0x7f12f2714000, 262144) = 0 [pid 5390] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 69.318239][ T5388] loop0: detected capacity change from 0 to 512 [ 69.329612][ T5388] EXT4-fs (loop0): orphan cleanup on readonly fs [ 69.338488][ T5388] EXT4-fs (loop0): 1 truncate cleaned up [pid 5390] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5390] close(3) = 0 [pid 5390] mkdir("./file0", 0777) = 0 [ 69.398079][ T5390] loop0: detected capacity change from 0 to 512 [ 69.408145][ T5390] EXT4-fs (loop0): orphan cleanup on readonly fs [ 69.416344][ T5390] EXT4-fs (loop0): 1 truncate cleaned up [pid 5390] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5390] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5390] ioctl(4, LOOP_CLR_FD) = 0 [pid 5390] close(4) = 0 [pid 5390] exit_group(0) = ? [pid 5390] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5390, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./157", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./157", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x5555560a2620 /* 4 entries */, 32768) = 112 umount2("./157/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./157/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./157/binderfs") = 0 umount2("./157/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./157/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./157/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./157/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./157/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./157/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./157") = 0 mkdir("./158", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5392 ./strace-static-x86_64: Process 5392 attached [pid 5392] chdir("./158") = 0 [pid 5392] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5392] setpgid(0, 0) = 0 [pid 5392] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5392] write(3, "1000", 4) = 4 [pid 5392] close(3) = 0 [pid 5392] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5392] memfd_create("syzkaller", 0) = 3 [pid 5392] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5392] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5392] munmap(0x7f12f2714000, 262144) = 0 [pid 5392] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5392] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5392] close(3) = 0 [pid 5392] mkdir("./file0", 0777) = 0 [pid 5392] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5392] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5392] ioctl(4, LOOP_CLR_FD) = 0 [pid 5392] close(4) = 0 [pid 5392] exit_group(0) = ? [pid 5392] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5392, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./158", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./158", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x5555560a2620 /* 4 entries */, 32768) = 112 umount2("./158/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./158/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./158/binderfs") = 0 umount2("./158/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./158/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./158/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./158/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./158/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./158/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./158") = 0 mkdir("./159", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5394 ./strace-static-x86_64: Process 5394 attached [pid 5394] chdir("./159") = 0 [pid 5394] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5394] setpgid(0, 0) = 0 [pid 5394] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5394] write(3, "1000", 4) = 4 [pid 5394] close(3) = 0 [pid 5394] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5394] memfd_create("syzkaller", 0) = 3 [pid 5394] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5394] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5394] munmap(0x7f12f2714000, 262144) = 0 [pid 5394] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 69.511696][ T5392] loop0: detected capacity change from 0 to 512 [ 69.522562][ T5392] EXT4-fs (loop0): orphan cleanup on readonly fs [ 69.531619][ T5392] EXT4-fs (loop0): 1 truncate cleaned up [pid 5394] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5394] close(3) = 0 [pid 5394] mkdir("./file0", 0777) = 0 [pid 5394] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5394] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5394] ioctl(4, LOOP_CLR_FD) = 0 [pid 5394] close(4) = 0 [pid 5394] exit_group(0) = ? [pid 5394] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5394, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./159", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./159", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x5555560a2620 /* 4 entries */, 32768) = 112 umount2("./159/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./159/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./159/binderfs") = 0 umount2("./159/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./159/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./159/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./159/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./159/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./159/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./159") = 0 mkdir("./160", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5396 ./strace-static-x86_64: Process 5396 attached [pid 5396] chdir("./160") = 0 [pid 5396] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5396] setpgid(0, 0) = 0 [pid 5396] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5396] write(3, "1000", 4) = 4 [pid 5396] close(3) = 0 [ 69.587788][ T5394] loop0: detected capacity change from 0 to 512 [ 69.597543][ T5394] EXT4-fs (loop0): orphan cleanup on readonly fs [ 69.605474][ T5394] EXT4-fs (loop0): 1 truncate cleaned up [pid 5396] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5396] memfd_create("syzkaller", 0) = 3 [pid 5396] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5396] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5396] munmap(0x7f12f2714000, 262144) = 0 [pid 5396] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5396] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5396] close(3) = 0 [pid 5396] mkdir("./file0", 0777) = 0 [pid 5396] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0 [pid 5396] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5396] ioctl(4, LOOP_CLR_FD) = 0 [pid 5396] close(4) = 0 [pid 5396] exit_group(0) = ? [ 69.656266][ T5396] loop0: detected capacity change from 0 to 512 [ 69.665676][ T5396] EXT4-fs (loop0): orphan cleanup on readonly fs [ 69.674409][ T5396] EXT4-fs (loop0): 1 truncate cleaned up [pid 5396] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5396, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./160", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./160", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x5555560a2620 /* 4 entries */, 32768) = 112 umount2("./160/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./160/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./160/binderfs") = 0 umount2("./160/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./160/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./160/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./160/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./160/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x5555560aa660 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555560aa660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./160/file0") = 0 getdents64(3, 0x5555560a2620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./160") = 0 mkdir("./161", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560a15d0) = 5398 ./strace-static-x86_64: Process 5398 attached [pid 5398] chdir("./161") = 0 [pid 5398] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5398] setpgid(0, 0) = 0 [pid 5398] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5398] write(3, "1000", 4) = 4 [pid 5398] close(3) = 0 [pid 5398] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5398] memfd_create("syzkaller", 0) = 3 [pid 5398] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f12f2714000 [pid 5398] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5398] munmap(0x7f12f2714000, 262144) = 0 [pid 5398] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5398] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5398] close(3) = 0 [pid 5398] mkdir("./file0", 0777) = 0