./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4035574832 <...> forked to background, child pid 4652 no interfaces have a carri[ 21.267799][ T4653] 8021q: adding VLAN 0 to HW filter on device bond0 er [ 21.277971][ T4653] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.126' (ECDSA) to the list of known hosts. execve("./syz-executor4035574832", ["./syz-executor4035574832"], 0x7ffc5a9b87f0 /* 10 vars */) = 0 brk(NULL) = 0x555555919000 brk(0x555555919c40) = 0x555555919c40 arch_prctl(ARCH_SET_FS, 0x555555919300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor4035574832", 4096) = 28 brk(0x55555593ac40) = 0x55555593ac40 brk(0x55555593b000) = 0x55555593b000 mprotect(0x7f9b3000f000, 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() = 5080 mkdir("./syzkaller.KBWhal", 0700) = 0 chmod("./syzkaller.KBWhal", 0777) = 0 chdir("./syzkaller.KBWhal") = 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=0x5555559195d0) = 5081 ./strace-static-x86_64: Process 5081 attached [pid 5081] chdir("./0") = 0 [pid 5081] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5081] setpgid(0, 0) = 0 [pid 5081] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5081] write(3, "1000", 4) = 4 [pid 5081] close(3) = 0 [pid 5081] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5081] memfd_create("syzkaller", 0) = 3 [pid 5081] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5081] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5081] munmap(0x7f9b27b53000, 262144) = 0 [pid 5081] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5081] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5081] close(3) = 0 [pid 5081] mkdir("./file0", 0777) = 0 syzkaller login: [ 38.624887][ T5081] memfd_create() without MFD_EXEC nor MFD_NOEXEC_SEAL, pid=5081 'syz-executor403' [ 38.640865][ T5081] loop0: detected capacity change from 0 to 512 [ 38.649989][ T5081] ======================================================= [ 38.649989][ T5081] WARNING: The mand mount option has been deprecated and [ 38.649989][ T5081] and is ignored by this kernel. Remove the mand [pid 5081] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5081] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5081] chdir("./file0") = 0 [pid 5081] ioctl(4, LOOP_CLR_FD) = 0 [pid 5081] close(4) = 0 [pid 5081] exit_group(0) = ? [pid 5081] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5081, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- 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, 0x55555591a620 /* 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 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./0/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 [ 38.649989][ T5081] option from the mount to silence this warning. [ 38.649989][ T5081] ======================================================= [ 38.685278][ T5081] EXT4-fs: Ignoring removed oldalloc option [ 38.693050][ T5081] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 38.702924][ T5081] EXT4-fs (loop0): orphan cleanup on readonly fs [ 38.714151][ T5081] EXT4-fs (loop0): 1 truncate cleaned up close(3) = 0 rmdir("./0") = 0 mkdir("./1", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5084 ./strace-static-x86_64: Process 5084 attached [pid 5084] chdir("./1") = 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) = 0x7f9b27b53000 [pid 5084] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5084] munmap(0x7f9b27b53000, 262144) = 0 [pid 5084] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5084] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5084] close(3) = 0 [pid 5084] mkdir("./file0", 0777) = 0 [ 38.721505][ T5081] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 38.743933][ T5080] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5084] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5084] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5084] chdir("./file0") = 0 [pid 5084] ioctl(4, LOOP_CLR_FD) = 0 [pid 5084] close(4) = 0 [pid 5084] 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("./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, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./1/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./1/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./1/binderfs") = 0 umount2("./1/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./1/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./1/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./1/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./1/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 [ 38.790331][ T5084] loop0: detected capacity change from 0 to 512 [ 38.798692][ T5084] EXT4-fs: Ignoring removed oldalloc option [ 38.805524][ T5084] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 38.815603][ T5084] EXT4-fs (loop0): orphan cleanup on readonly fs [ 38.824119][ T5084] EXT4-fs (loop0): 1 truncate cleaned up rmdir("./1/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5086 ./strace-static-x86_64: Process 5086 attached [pid 5086] chdir("./2") = 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) = 0x7f9b27b53000 [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(0x7f9b27b53000, 262144) = 0 [pid 5086] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5086] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5086] close(3) = 0 [pid 5086] mkdir("./file0", 0777) = 0 [ 38.836852][ T5084] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 38.864881][ T5080] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5086] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5086] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5086] chdir("./file0") = 0 [pid 5086] ioctl(4, LOOP_CLR_FD) = 0 [pid 5086] close(4) = 0 [pid 5086] exit_group(0) = ? [pid 5086] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5086, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- 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, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./2/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./2") = 0 mkdir("./3", 0777) = 0 [ 38.900365][ T5086] loop0: detected capacity change from 0 to 512 [ 38.910258][ T5086] EXT4-fs: Ignoring removed oldalloc option [ 38.917402][ T5086] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 38.927817][ T5086] EXT4-fs (loop0): orphan cleanup on readonly fs [ 38.936175][ T5086] 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=0x5555559195d0) = 5088 ./strace-static-x86_64: Process 5088 attached [pid 5088] chdir("./3") = 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) = 0x7f9b27b53000 [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(0x7f9b27b53000, 262144) = 0 [pid 5088] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5088] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5088] close(3) = 0 [pid 5088] mkdir("./file0", 0777) = 0 [ 38.942316][ T5086] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 38.966003][ T5080] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5088] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5088] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5088] chdir("./file0") = 0 [pid 5088] ioctl(4, LOOP_CLR_FD) = 0 [pid 5088] close(4) = 0 [pid 5088] 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("./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, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./3/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./3/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./3/binderfs") = 0 umount2("./3/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./3/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./3/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./3/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./3/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./3/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./3") = 0 mkdir("./4", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5090 ./strace-static-x86_64: Process 5090 attached [pid 5090] chdir("./4") = 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) = 0x7f9b27b53000 [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(0x7f9b27b53000, 262144) = 0 [pid 5090] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 39.013707][ T5088] loop0: detected capacity change from 0 to 512 [ 39.022194][ T5088] EXT4-fs: Ignoring removed oldalloc option [ 39.029058][ T5088] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 39.038712][ T5088] EXT4-fs (loop0): orphan cleanup on readonly fs [ 39.047646][ T5088] EXT4-fs (loop0): 1 truncate cleaned up [pid 5090] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5090] close(3) = 0 [pid 5090] mkdir("./file0", 0777) = 0 [ 39.054580][ T5088] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 39.074003][ T5080] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [ 39.103217][ T5090] loop0: detected capacity change from 0 to 512 [pid 5090] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5090] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5090] chdir("./file0") = 0 [pid 5090] ioctl(4, LOOP_CLR_FD) = 0 [pid 5090] close(4) = 0 [pid 5090] exit_group(0) = ? [pid 5090] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5090, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- 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, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./4/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./4/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./4/binderfs") = 0 umount2("./4/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./4/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./4/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./4/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./4/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./4/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5092 ./strace-static-x86_64: Process 5092 attached [pid 5092] chdir("./5") = 0 [pid 5092] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [ 39.108767][ T5082] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 39.111133][ T5090] EXT4-fs: Ignoring removed oldalloc option [ 39.128682][ T5090] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 39.138493][ T5090] EXT4-fs (loop0): orphan cleanup on readonly fs [ 39.147503][ T5090] EXT4-fs (loop0): 1 truncate cleaned up [pid 5092] setpgid(0, 0) = 0 [pid 5092] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5092] write(3, "1000", 4) = 4 [pid 5092] close(3) = 0 [pid 5092] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5092] memfd_create("syzkaller", 0) = 3 [pid 5092] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [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(0x7f9b27b53000, 262144) = 0 [pid 5092] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5092] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5092] close(3) = 0 [pid 5092] mkdir("./file0", 0777) = 0 [ 39.153385][ T5090] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 39.177872][ T5080] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5092] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5092] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5092] chdir("./file0") = 0 [pid 5092] ioctl(4, LOOP_CLR_FD) = 0 [pid 5092] close(4) = 0 [pid 5092] 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("./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, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./5/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./5/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./5/binderfs") = 0 umount2("./5/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./5/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./5/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./5/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./5/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./5/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./5") = 0 mkdir("./6", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5094 ./strace-static-x86_64: Process 5094 attached [pid 5094] chdir("./6") = 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) = 0x7f9b27b53000 [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(0x7f9b27b53000, 262144) = 0 [pid 5094] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 39.216754][ T5092] loop0: detected capacity change from 0 to 512 [ 39.224911][ T5092] EXT4-fs: Ignoring removed oldalloc option [ 39.232524][ T5092] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 39.242241][ T5092] EXT4-fs (loop0): orphan cleanup on readonly fs [ 39.250742][ T5092] EXT4-fs (loop0): 1 truncate cleaned up [pid 5094] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5094] close(3) = 0 [pid 5094] mkdir("./file0", 0777) = 0 [ 39.256706][ T5092] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 39.280433][ T5080] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5094] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5094] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5094] chdir("./file0") = 0 [pid 5094] ioctl(4, LOOP_CLR_FD) = 0 [pid 5094] close(4) = 0 [pid 5094] exit_group(0) = ? [pid 5094] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5094, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./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, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./6/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5096 ./strace-static-x86_64: Process 5096 attached [pid 5096] chdir("./7") = 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) = 0x7f9b27b53000 [ 39.307503][ T5094] loop0: detected capacity change from 0 to 512 [ 39.315496][ T5094] EXT4-fs: Ignoring removed oldalloc option [ 39.322267][ T5094] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 39.332685][ T5094] EXT4-fs (loop0): orphan cleanup on readonly fs [ 39.341050][ T5094] EXT4-fs (loop0): 1 truncate cleaned up [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(0x7f9b27b53000, 262144) = 0 [pid 5096] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5096] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5096] close(3) = 0 [pid 5096] mkdir("./file0", 0777) = 0 [ 39.347578][ T5094] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 39.368243][ T5080] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5096] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5096] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5096] chdir("./file0") = 0 [pid 5096] ioctl(4, LOOP_CLR_FD) = 0 [pid 5096] close(4) = 0 [pid 5096] 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=5 /* 0.05 s */} --- 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, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./7/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./7/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./7/binderfs") = 0 umount2("./7/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./7/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./7/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./7/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./7/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./7/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./7") = 0 mkdir("./8", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5098 ./strace-static-x86_64: Process 5098 attached [pid 5098] chdir("./8") = 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) = 0x7f9b27b53000 [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 [ 39.404577][ T5096] loop0: detected capacity change from 0 to 512 [ 39.412606][ T5096] EXT4-fs: Ignoring removed oldalloc option [ 39.419818][ T5096] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 39.429825][ T5096] EXT4-fs (loop0): orphan cleanup on readonly fs [ 39.438787][ T5096] EXT4-fs (loop0): 1 truncate cleaned up [pid 5098] munmap(0x7f9b27b53000, 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 [ 39.445690][ T5096] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 39.463942][ T5080] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5098] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5098] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5098] chdir("./file0") = 0 [pid 5098] ioctl(4, LOOP_CLR_FD) = 0 [pid 5098] close(4) = 0 [pid 5098] 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=3 /* 0.03 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, 0x55555591a620 /* 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 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./8/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5100 ./strace-static-x86_64: Process 5100 attached [pid 5100] chdir("./9") = 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) = 0x7f9b27b53000 [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(0x7f9b27b53000, 262144) = 0 [pid 5100] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 39.499567][ T5098] loop0: detected capacity change from 0 to 512 [ 39.508717][ T5098] EXT4-fs: Ignoring removed oldalloc option [ 39.515206][ T5098] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 39.525260][ T5098] EXT4-fs (loop0): orphan cleanup on readonly fs [ 39.534377][ T5098] EXT4-fs (loop0): 1 truncate cleaned up [pid 5100] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5100] close(3) = 0 [pid 5100] mkdir("./file0", 0777) = 0 [ 39.540230][ T5098] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 39.558384][ T5080] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [ 39.587405][ T5100] loop0: detected capacity change from 0 to 512 [pid 5100] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5100] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5100] chdir("./file0") = 0 [pid 5100] ioctl(4, LOOP_CLR_FD) = 0 [pid 5100] close(4) = 0 [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=5 /* 0.05 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, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./9/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5102 ./strace-static-x86_64: Process 5102 attached [pid 5102] chdir("./10") = 0 [pid 5102] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5102] setpgid(0, 0) = 0 [pid 5102] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5102] write(3, "1000", 4) = 4 [pid 5102] close(3) = 0 [pid 5102] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5102] memfd_create("syzkaller", 0) = 3 [pid 5102] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [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(0x7f9b27b53000, 262144) = 0 [pid 5102] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 39.588122][ T5082] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 39.595346][ T5100] EXT4-fs: Ignoring removed oldalloc option [ 39.610111][ T5100] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 39.619911][ T5100] EXT4-fs (loop0): orphan cleanup on readonly fs [ 39.629077][ T5100] EXT4-fs (loop0): 1 truncate cleaned up [ 39.634945][ T5100] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [pid 5102] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5102] close(3) = 0 [pid 5102] mkdir("./file0", 0777) = 0 [pid 5102] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5102] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5102] chdir("./file0") = 0 [pid 5102] ioctl(4, LOOP_CLR_FD) = 0 [pid 5102] close(4) = 0 [ 39.662496][ T5080] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [ 39.692955][ T5102] loop0: detected capacity change from 0 to 512 [ 39.697473][ T5082] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [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=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./10", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./10", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./10/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5104 ./strace-static-x86_64: Process 5104 attached [pid 5104] chdir("./11") = 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) = 0x7f9b27b53000 [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(0x7f9b27b53000, 262144) = 0 [pid 5104] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 39.700890][ T5102] EXT4-fs: Ignoring removed oldalloc option [ 39.715555][ T5102] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 39.725324][ T5102] EXT4-fs (loop0): orphan cleanup on readonly fs [ 39.733743][ T5102] EXT4-fs (loop0): 1 truncate cleaned up [ 39.740016][ T5102] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [pid 5104] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5104] close(3) = 0 [pid 5104] mkdir("./file0", 0777) = 0 [pid 5104] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5104] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5104] chdir("./file0") = 0 [pid 5104] ioctl(4, LOOP_CLR_FD) = 0 [pid 5104] close(4) = 0 [ 39.766346][ T5080] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [ 39.806577][ T5104] loop0: detected capacity change from 0 to 512 [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=3 /* 0.03 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, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./11/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./11/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./11/binderfs") = 0 umount2("./11/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./11/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./11/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./11/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./11/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./11/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5106 ./strace-static-x86_64: Process 5106 attached [pid 5106] chdir("./12") = 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) = 0x7f9b27b53000 [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(0x7f9b27b53000, 262144) = 0 [pid 5106] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 39.814815][ T5104] EXT4-fs: Ignoring removed oldalloc option [ 39.821689][ T5104] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 39.831456][ T5104] EXT4-fs (loop0): orphan cleanup on readonly fs [ 39.839990][ T5104] EXT4-fs (loop0): 1 truncate cleaned up [ 39.846159][ T5104] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [pid 5106] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5106] close(3) = 0 [pid 5106] mkdir("./file0", 0777) = 0 [ 39.866318][ T5080] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [ 39.905806][ T5106] loop0: detected capacity change from 0 to 512 [pid 5106] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5106] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5106] chdir("./file0") = 0 [pid 5106] ioctl(4, LOOP_CLR_FD) = 0 [pid 5106] close(4) = 0 [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=5 /* 0.05 s */} --- umount2("./12", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./12", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./12/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5108 ./strace-static-x86_64: Process 5108 attached [pid 5108] chdir("./13") = 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) = 0x7f9b27b53000 [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(0x7f9b27b53000, 262144) = 0 [pid 5108] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 39.909244][ T5082] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 39.915469][ T5106] EXT4-fs: Ignoring removed oldalloc option [ 39.928684][ T5106] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 39.938644][ T5106] EXT4-fs (loop0): orphan cleanup on readonly fs [ 39.948179][ T5106] EXT4-fs (loop0): 1 truncate cleaned up [ 39.954348][ T5106] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [pid 5108] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5108] close(3) = 0 [pid 5108] mkdir("./file0", 0777) = 0 [ 39.981279][ T5080] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5108] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5108] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5108] chdir("./file0") = 0 [pid 5108] ioctl(4, LOOP_CLR_FD) = 0 [pid 5108] close(4) = 0 [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=4 /* 0.04 s */} --- umount2("./13", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./13", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./13/file0") = 0 getdents64(3, 0x55555591a620 /* 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) [ 40.022447][ T5108] loop0: detected capacity change from 0 to 512 [ 40.030894][ T5108] EXT4-fs: Ignoring removed oldalloc option [ 40.037664][ T5108] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 40.047297][ T5108] EXT4-fs (loop0): orphan cleanup on readonly fs [ 40.055423][ T5108] EXT4-fs (loop0): 1 truncate cleaned up close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5110 ./strace-static-x86_64: Process 5110 attached [pid 5110] chdir("./14") = 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) = 0x7f9b27b53000 [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 [pid 5110] munmap(0x7f9b27b53000, 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 [ 40.066472][ T5108] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 40.089169][ T5080] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5110] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5110] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5110] chdir("./file0") = 0 [pid 5110] ioctl(4, LOOP_CLR_FD) = 0 [pid 5110] close(4) = 0 [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=2 /* 0.02 s */} --- 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, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./14/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5112 ./strace-static-x86_64: Process 5112 attached [pid 5112] chdir("./15") = 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) = 0x7f9b27b53000 [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(0x7f9b27b53000, 262144) = 0 [pid 5112] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 40.131403][ T5110] loop0: detected capacity change from 0 to 512 [ 40.139887][ T5110] EXT4-fs: Ignoring removed oldalloc option [ 40.146427][ T5110] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 40.156969][ T5110] EXT4-fs (loop0): orphan cleanup on readonly fs [ 40.165526][ T5110] EXT4-fs (loop0): 1 truncate cleaned up [pid 5112] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5112] close(3) = 0 [pid 5112] mkdir("./file0", 0777) = 0 [pid 5112] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5112] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5112] chdir("./file0") = 0 [pid 5112] ioctl(4, LOOP_CLR_FD) = 0 [pid 5112] close(4) = 0 [ 40.171660][ T5110] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 40.189679][ T5080] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [ 40.220648][ T5112] loop0: detected capacity change from 0 to 512 [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=6 /* 0.06 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, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./15/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./15/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./15/binderfs") = 0 umount2("./15/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./15/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./15/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./15/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./15/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./15/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5114 ./strace-static-x86_64: Process 5114 attached [pid 5114] chdir("./16") = 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 [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) = 0x7f9b27b53000 [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(0x7f9b27b53000, 262144) = 0 [pid 5114] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 40.228705][ T5112] EXT4-fs: Ignoring removed oldalloc option [ 40.235351][ T5112] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 40.245067][ T5112] EXT4-fs (loop0): orphan cleanup on readonly fs [ 40.253865][ T5112] EXT4-fs (loop0): 1 truncate cleaned up [ 40.259876][ T5112] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5114] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5114] chdir("./file0") = 0 [pid 5114] ioctl(4, LOOP_CLR_FD) = 0 [pid 5114] close(4) = 0 [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=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./16", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./16", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [ 40.284885][ T5080] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [ 40.312694][ T5114] loop0: detected capacity change from 0 to 512 [ 40.314118][ T5082] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 40.320471][ T5114] EXT4-fs: Ignoring removed oldalloc option fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./16/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5116 ./strace-static-x86_64: Process 5116 attached [pid 5116] chdir("./17") = 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) = 0x7f9b27b53000 [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(0x7f9b27b53000, 262144) = 0 [pid 5116] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5116] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5116] close(3) = 0 [pid 5116] mkdir("./file0", 0777) = 0 [ 40.335615][ T5114] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 40.346046][ T5114] EXT4-fs (loop0): orphan cleanup on readonly fs [ 40.354967][ T5114] EXT4-fs (loop0): 1 truncate cleaned up [ 40.361014][ T5114] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 40.382289][ T5080] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5116] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5116] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5116] chdir("./file0") = 0 [pid 5116] ioctl(4, LOOP_CLR_FD) = 0 [pid 5116] close(4) = 0 [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=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./17", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./17", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 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 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 [ 40.420838][ T5116] loop0: detected capacity change from 0 to 512 [ 40.429450][ T5116] EXT4-fs: Ignoring removed oldalloc option [ 40.436000][ T5116] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 40.446083][ T5116] EXT4-fs (loop0): orphan cleanup on readonly fs [ 40.454753][ T5116] EXT4-fs (loop0): 1 truncate cleaned up close(4) = 0 rmdir("./17/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5118 ./strace-static-x86_64: Process 5118 attached [pid 5118] chdir("./18") = 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) = 0x7f9b27b53000 [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(0x7f9b27b53000, 262144) = 0 [pid 5118] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5118] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5118] close(3) = 0 [pid 5118] mkdir("./file0", 0777) = 0 [ 40.461817][ T5116] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [pid 5118] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5118] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5118] chdir("./file0") = 0 [pid 5118] ioctl(4, LOOP_CLR_FD) = 0 [pid 5118] close(4) = 0 [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=5 /* 0.05 s */} --- umount2("./18", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./18", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [ 40.494988][ T5080] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [ 40.531043][ T5118] loop0: detected capacity change from 0 to 512 [ 40.539118][ T5118] EXT4-fs: Ignoring removed oldalloc option fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./18/file0") = 0 getdents64(3, 0x55555591a620 /* 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./strace-static-x86_64: Process 5120 attached [pid 5120] chdir("./19") = 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 [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) = 0x7f9b27b53000 [pid 5080] <... clone resumed>, child_tidptr=0x5555559195d0) = 5120 [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(0x7f9b27b53000, 262144) = 0 [pid 5120] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 40.545656][ T5118] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 40.555720][ T5118] EXT4-fs (loop0): orphan cleanup on readonly fs [ 40.564535][ T5118] EXT4-fs (loop0): 1 truncate cleaned up [ 40.571187][ T5118] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [pid 5120] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5120] close(3) = 0 [pid 5120] mkdir("./file0", 0777) = 0 [pid 5120] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5120] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5120] chdir("./file0") = 0 [pid 5120] ioctl(4, LOOP_CLR_FD) = 0 [ 40.594716][ T5080] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [ 40.635406][ T5120] loop0: detected capacity change from 0 to 512 [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=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, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./19/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./19/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./19/binderfs") = 0 umount2("./19/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./19/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./19/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./19/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./19/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./19/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5122 ./strace-static-x86_64: Process 5122 attached [pid 5122] chdir("./20") = 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) = 0x7f9b27b53000 [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(0x7f9b27b53000, 262144) = 0 [pid 5122] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5122] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5122] close(3) = 0 [pid 5122] mkdir("./file0", 0777) = 0 [ 40.643854][ T5120] EXT4-fs: Ignoring removed oldalloc option [ 40.650538][ T5120] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 40.660728][ T5120] EXT4-fs (loop0): orphan cleanup on readonly fs [ 40.669841][ T5120] EXT4-fs (loop0): 1 truncate cleaned up [ 40.676352][ T5120] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [pid 5122] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5122] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5122] chdir("./file0") = 0 [pid 5122] ioctl(4, LOOP_CLR_FD) = 0 [pid 5122] close(4) = 0 [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 */} --- 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 [ 40.697731][ T5080] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [ 40.730632][ T5122] loop0: detected capacity change from 0 to 512 [ 40.739221][ T5122] EXT4-fs: Ignoring removed oldalloc option getdents64(3, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./20/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5124 ./strace-static-x86_64: Process 5124 attached [pid 5124] chdir("./21") = 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) = 0x7f9b27b53000 [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(0x7f9b27b53000, 262144) = 0 [pid 5124] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5124] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5124] close(3) = 0 [pid 5124] mkdir("./file0", 0777) = 0 [ 40.745995][ T5122] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 40.756114][ T5122] EXT4-fs (loop0): orphan cleanup on readonly fs [ 40.764321][ T5122] EXT4-fs (loop0): 1 truncate cleaned up [ 40.771932][ T5122] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [pid 5124] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5124] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5124] chdir("./file0") = 0 [pid 5124] ioctl(4, LOOP_CLR_FD) = 0 [pid 5124] close(4) = 0 [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=4 /* 0.04 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, 0x55555591a620 /* 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 [ 40.794686][ T5080] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [ 40.823234][ T5124] loop0: detected capacity change from 0 to 512 [ 40.831305][ T5124] EXT4-fs: Ignoring removed oldalloc option [ 40.838192][ T5124] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./21/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5126 ./strace-static-x86_64: Process 5126 attached [pid 5126] chdir("./22") = 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) = 0x7f9b27b53000 [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(0x7f9b27b53000, 262144) = 0 [pid 5126] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5126] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5126] close(3) = 0 [pid 5126] mkdir("./file0", 0777) = 0 [ 40.848281][ T5124] EXT4-fs (loop0): orphan cleanup on readonly fs [ 40.857502][ T5124] EXT4-fs (loop0): 1 truncate cleaned up [ 40.864478][ T5124] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 40.886953][ T5080] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5126] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5126] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5126] chdir("./file0") = 0 [pid 5126] ioctl(4, LOOP_CLR_FD) = 0 [pid 5126] close(4) = 0 [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=4 /* 0.04 s */} --- umount2("./22", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./22", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./22/file0") = 0 getdents64(3, 0x55555591a620 /* 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) [ 40.925482][ T5126] loop0: detected capacity change from 0 to 512 [ 40.933804][ T5126] EXT4-fs: Ignoring removed oldalloc option [ 40.940430][ T5126] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 40.950807][ T5126] EXT4-fs (loop0): orphan cleanup on readonly fs [ 40.960028][ T5126] 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 5128 attached , child_tidptr=0x5555559195d0) = 5128 [pid 5128] chdir("./23") = 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) = 0x7f9b27b53000 [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(0x7f9b27b53000, 262144) = 0 [pid 5128] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5128] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5128] close(3) = 0 [pid 5128] mkdir("./file0", 0777) = 0 [ 40.965905][ T5126] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 40.988732][ T5080] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5128] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5128] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5128] chdir("./file0") = 0 [pid 5128] ioctl(4, LOOP_CLR_FD) = 0 [pid 5128] close(4) = 0 [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=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./23", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./23", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./23/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./23/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./23/binderfs") = 0 umount2("./23/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./23/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./23/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./23/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./23/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./23/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./23") = 0 mkdir("./24", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5130 ./strace-static-x86_64: Process 5130 attached [pid 5130] chdir("./24") = 0 [pid 5130] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5130] setpgid(0, 0) = 0 [pid 5130] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5130] write(3, "1000", 4) = 4 [pid 5130] close(3) = 0 [pid 5130] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5130] memfd_create("syzkaller", 0) = 3 [pid 5130] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [ 41.029416][ T5128] loop0: detected capacity change from 0 to 512 [ 41.039483][ T5128] EXT4-fs: Ignoring removed oldalloc option [ 41.045963][ T5128] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 41.055970][ T5128] EXT4-fs (loop0): orphan cleanup on readonly fs [ 41.064227][ T5128] EXT4-fs (loop0): 1 truncate cleaned up [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(0x7f9b27b53000, 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 [ 41.070071][ T5128] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 41.091701][ T5080] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5130] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5130] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5130] chdir("./file0") = 0 [pid 5130] ioctl(4, LOOP_CLR_FD) = 0 [pid 5130] close(4) = 0 [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=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./24", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./24", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./24/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5132 ./strace-static-x86_64: Process 5132 attached [pid 5132] chdir("./25") = 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 [ 41.130895][ T5130] loop0: detected capacity change from 0 to 512 [ 41.139225][ T5130] EXT4-fs: Ignoring removed oldalloc option [ 41.145797][ T5130] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 41.156113][ T5130] EXT4-fs (loop0): orphan cleanup on readonly fs [ 41.164644][ T5130] EXT4-fs (loop0): 1 truncate cleaned up [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) = 0x7f9b27b53000 [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(0x7f9b27b53000, 262144) = 0 [pid 5132] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5132] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5132] close(3) = 0 [pid 5132] mkdir("./file0", 0777) = 0 [ 41.170728][ T5130] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 41.192473][ T5080] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5132] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5132] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5132] chdir("./file0") = 0 [pid 5132] ioctl(4, LOOP_CLR_FD) = 0 [pid 5132] close(4) = 0 [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 */} --- 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, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./25/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5134 ./strace-static-x86_64: Process 5134 attached [pid 5134] chdir("./26") = 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) = 0x7f9b27b53000 [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(0x7f9b27b53000, 262144) = 0 [ 41.232240][ T5132] loop0: detected capacity change from 0 to 512 [ 41.241061][ T5132] EXT4-fs: Ignoring removed oldalloc option [ 41.247655][ T5132] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 41.257536][ T5132] EXT4-fs (loop0): orphan cleanup on readonly fs [ 41.265963][ T5132] EXT4-fs (loop0): 1 truncate cleaned up [pid 5134] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5134] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5134] close(3) = 0 [pid 5134] mkdir("./file0", 0777) = 0 [ 41.272214][ T5132] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 41.292919][ T5080] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5134] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5134] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5134] chdir("./file0") = 0 [pid 5134] ioctl(4, LOOP_CLR_FD) = 0 [pid 5134] close(4) = 0 [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("./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, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./26/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5136 ./strace-static-x86_64: Process 5136 attached [pid 5136] chdir("./27") = 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) = 0x7f9b27b53000 [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(0x7f9b27b53000, 262144) = 0 [ 41.327070][ T5134] loop0: detected capacity change from 0 to 512 [ 41.334682][ T5134] EXT4-fs: Ignoring removed oldalloc option [ 41.341351][ T5134] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 41.351657][ T5134] EXT4-fs (loop0): orphan cleanup on readonly fs [ 41.360057][ T5134] EXT4-fs (loop0): 1 truncate cleaned up [pid 5136] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5136] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5136] close(3) = 0 [pid 5136] mkdir("./file0", 0777) = 0 [ 41.365935][ T5134] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 41.388256][ T5080] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5136] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5136] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5136] chdir("./file0") = 0 [pid 5136] ioctl(4, LOOP_CLR_FD) = 0 [pid 5136] close(4) = 0 [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=4 /* 0.04 s */} --- 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, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./27/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./27/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./27/binderfs") = 0 umount2("./27/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./27/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./27/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./27/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./27/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./27/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5138 ./strace-static-x86_64: Process 5138 attached [pid 5138] chdir("./28") = 0 [ 41.421465][ T5136] loop0: detected capacity change from 0 to 512 [ 41.429612][ T5136] EXT4-fs: Ignoring removed oldalloc option [ 41.436305][ T5136] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 41.446030][ T5136] EXT4-fs (loop0): orphan cleanup on readonly fs [ 41.455510][ T5136] EXT4-fs (loop0): 1 truncate cleaned up [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) = 0x7f9b27b53000 [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(0x7f9b27b53000, 262144) = 0 [pid 5138] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5138] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5138] close(3) = 0 [pid 5138] mkdir("./file0", 0777) = 0 [ 41.461620][ T5136] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 41.485268][ T5080] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5138] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5138] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5138] chdir("./file0") = 0 [pid 5138] ioctl(4, LOOP_CLR_FD) = 0 [pid 5138] close(4) = 0 [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=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./28", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./28", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./28/file0") = 0 getdents64(3, 0x55555591a620 /* 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 [ 41.530105][ T5138] loop0: detected capacity change from 0 to 512 [ 41.537875][ T5138] EXT4-fs: Ignoring removed oldalloc option [ 41.544360][ T5138] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 41.554284][ T5138] EXT4-fs (loop0): orphan cleanup on readonly fs [ 41.562641][ T5138] EXT4-fs (loop0): 1 truncate cleaned up clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5140 ./strace-static-x86_64: Process 5140 attached [pid 5140] chdir("./29") = 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 [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) = 0x7f9b27b53000 [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(0x7f9b27b53000, 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 [ 41.568579][ T5138] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 41.593451][ T5080] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5140] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5140] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5140] chdir("./file0") = 0 [pid 5140] ioctl(4, LOOP_CLR_FD) = 0 [pid 5140] close(4) = 0 [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("./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, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./29/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./29/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./29/binderfs") = 0 umount2("./29/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./29/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./29/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./29/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./29/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./29/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5142 ./strace-static-x86_64: Process 5142 attached [pid 5142] chdir("./30") = 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) = 0x7f9b27b53000 [ 41.633924][ T5140] loop0: detected capacity change from 0 to 512 [ 41.642642][ T5140] EXT4-fs: Ignoring removed oldalloc option [ 41.649257][ T5140] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 41.659044][ T5140] EXT4-fs (loop0): orphan cleanup on readonly fs [ 41.667470][ T5140] EXT4-fs (loop0): 1 truncate cleaned up [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(0x7f9b27b53000, 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 [ 41.673304][ T5140] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 41.698645][ T5080] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5142] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5142] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5142] chdir("./file0") = 0 [pid 5142] ioctl(4, LOOP_CLR_FD) = 0 [pid 5142] close(4) = 0 [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=4 /* 0.04 s */} --- 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, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./30/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./30/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./30/binderfs") = 0 umount2("./30/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./30/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./30/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./30/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./30/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./30/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5144 ./strace-static-x86_64: Process 5144 attached [pid 5144] chdir("./31") = 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) = 0x7f9b27b53000 [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(0x7f9b27b53000, 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 [ 41.731648][ T5142] loop0: detected capacity change from 0 to 512 [ 41.739288][ T5142] EXT4-fs: Ignoring removed oldalloc option [ 41.745734][ T5142] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 41.755964][ T5142] EXT4-fs (loop0): orphan cleanup on readonly fs [ 41.764110][ T5142] EXT4-fs (loop0): 1 truncate cleaned up [ 41.769953][ T5142] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [pid 5144] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5144] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5144] chdir("./file0") = 0 [pid 5144] ioctl(4, LOOP_CLR_FD) = 0 [pid 5144] close(4) = 0 [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=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./31", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./31", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./31/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./31/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./31/binderfs") = 0 [ 41.788817][ T5080] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [ 41.818632][ T5144] loop0: detected capacity change from 0 to 512 [ 41.828487][ T5144] EXT4-fs: Ignoring removed oldalloc option 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./31/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5146 ./strace-static-x86_64: Process 5146 attached [pid 5146] chdir("./32") = 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) = 0x7f9b27b53000 [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(0x7f9b27b53000, 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 [ 41.835029][ T5144] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 41.845146][ T5144] EXT4-fs (loop0): orphan cleanup on readonly fs [ 41.853397][ T5144] EXT4-fs (loop0): 1 truncate cleaned up [ 41.859358][ T5144] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 41.881295][ T5080] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5146] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5146] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5146] chdir("./file0") = 0 [pid 5146] ioctl(4, LOOP_CLR_FD) = 0 [pid 5146] close(4) = 0 [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("./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, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./32/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./32") = 0 mkdir("./33", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5148 attached , child_tidptr=0x5555559195d0) = 5148 [pid 5148] chdir("./33") = 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) = 0x7f9b27b53000 [ 41.920328][ T5146] loop0: detected capacity change from 0 to 512 [ 41.928364][ T5146] EXT4-fs: Ignoring removed oldalloc option [ 41.935329][ T5146] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 41.945279][ T5146] EXT4-fs (loop0): orphan cleanup on readonly fs [ 41.953734][ T5146] EXT4-fs (loop0): 1 truncate cleaned up [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(0x7f9b27b53000, 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 [ 41.959548][ T5146] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 41.978657][ T5080] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5148] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5148] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5148] chdir("./file0") = 0 [pid 5148] ioctl(4, LOOP_CLR_FD) = 0 [pid 5148] close(4) = 0 [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=5 /* 0.05 s */} --- umount2("./33", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./33", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 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) 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./33/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5150 ./strace-static-x86_64: Process 5150 attached [pid 5150] chdir("./34") = 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) = 0x7f9b27b53000 [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(0x7f9b27b53000, 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 [ 42.018857][ T5148] loop0: detected capacity change from 0 to 512 [ 42.026760][ T5148] EXT4-fs: Ignoring removed oldalloc option [ 42.033394][ T5148] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 42.043227][ T5148] EXT4-fs (loop0): orphan cleanup on readonly fs [ 42.052057][ T5148] EXT4-fs (loop0): 1 truncate cleaned up [pid 5150] mkdir("./file0", 0777) = 0 [pid 5150] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5150] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5150] chdir("./file0") = 0 [pid 5150] ioctl(4, LOOP_CLR_FD) = 0 [pid 5150] close(4) = 0 [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=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 [ 42.057985][ T5148] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 42.078096][ T5080] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [ 42.105121][ T5150] loop0: detected capacity change from 0 to 512 [ 42.112788][ T5150] EXT4-fs: Ignoring removed oldalloc option 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, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./34/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./34/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./34/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5152 ./strace-static-x86_64: Process 5152 attached [pid 5152] chdir("./35") = 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) = 0x7f9b27b53000 [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(0x7f9b27b53000, 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 [ 42.119729][ T5150] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 42.129605][ T5150] EXT4-fs (loop0): orphan cleanup on readonly fs [ 42.138684][ T5150] EXT4-fs (loop0): 1 truncate cleaned up [ 42.144558][ T5150] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [pid 5152] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5152] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5152] chdir("./file0") = 0 [pid 5152] ioctl(4, LOOP_CLR_FD) = 0 [pid 5152] close(4) = 0 [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=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./35", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 42.167858][ T5080] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [ 42.204992][ T5152] loop0: detected capacity change from 0 to 512 [ 42.213296][ T5152] EXT4-fs: Ignoring removed oldalloc option openat(AT_FDCWD, "./35", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./35/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5154 ./strace-static-x86_64: Process 5154 attached [pid 5154] chdir("./36") = 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) = 0x7f9b27b53000 [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(0x7f9b27b53000, 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 [ 42.219982][ T5152] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 42.229748][ T5152] EXT4-fs (loop0): orphan cleanup on readonly fs [ 42.238125][ T5152] EXT4-fs (loop0): 1 truncate cleaned up [ 42.243946][ T5152] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [pid 5154] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5154] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5154] chdir("./file0") = 0 [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=5 /* 0.05 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 [ 42.269937][ T5080] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [ 42.305274][ T5154] loop0: detected capacity change from 0 to 512 [ 42.313503][ T5154] EXT4-fs: Ignoring removed oldalloc option fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./36/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./36") = 0 mkdir("./37", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5156 ./strace-static-x86_64: Process 5156 attached [pid 5156] chdir("./37") = 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) = 0x7f9b27b53000 [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(0x7f9b27b53000, 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 [ 42.320548][ T5154] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 42.330404][ T5154] EXT4-fs (loop0): orphan cleanup on readonly fs [ 42.338894][ T5154] EXT4-fs (loop0): 1 truncate cleaned up [ 42.344752][ T5154] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [pid 5156] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5156] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5156] chdir("./file0") = 0 [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=4 /* 0.04 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 [ 42.368738][ T5080] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [ 42.404153][ T5156] loop0: detected capacity change from 0 to 512 [ 42.412365][ T5156] EXT4-fs: Ignoring removed oldalloc option getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./37/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./37/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./37/binderfs") = 0 umount2("./37/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./37/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./37/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./37/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./37/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./37/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5158 ./strace-static-x86_64: Process 5158 attached [pid 5158] chdir("./38") = 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) = 0x7f9b27b53000 [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(0x7f9b27b53000, 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 [ 42.419275][ T5156] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 42.429618][ T5156] EXT4-fs (loop0): orphan cleanup on readonly fs [ 42.438078][ T5156] EXT4-fs (loop0): 1 truncate cleaned up [ 42.443900][ T5156] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 42.466376][ T5080] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5158] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5158] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5158] chdir("./file0") = 0 [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=5 /* 0.05 s */} --- umount2("./38", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./38", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./38/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./38") = 0 mkdir("./39", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5160 ./strace-static-x86_64: Process 5160 attached [pid 5160] chdir("./39") = 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) = 0x7f9b27b53000 [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(0x7f9b27b53000, 262144) = 0 [pid 5160] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 42.504638][ T5158] loop0: detected capacity change from 0 to 512 [ 42.512345][ T5158] EXT4-fs: Ignoring removed oldalloc option [ 42.519075][ T5158] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 42.528846][ T5158] EXT4-fs (loop0): orphan cleanup on readonly fs [ 42.537534][ T5158] EXT4-fs (loop0): 1 truncate cleaned up [pid 5160] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5160] close(3) = 0 [pid 5160] mkdir("./file0", 0777) = 0 [ 42.543378][ T5158] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 42.565322][ T5080] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5160] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5160] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5160] chdir("./file0") = 0 [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=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./39", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./39", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./39/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./39/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./39/binderfs") = 0 umount2("./39/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./39/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./39/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./39/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./39/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./39/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5162 ./strace-static-x86_64: Process 5162 attached [pid 5162] chdir("./40") = 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) = 0x7f9b27b53000 [ 42.598708][ T5160] loop0: detected capacity change from 0 to 512 [ 42.606488][ T5160] EXT4-fs: Ignoring removed oldalloc option [ 42.613039][ T5160] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 42.623079][ T5160] EXT4-fs (loop0): orphan cleanup on readonly fs [ 42.631799][ T5160] EXT4-fs (loop0): 1 truncate cleaned up [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(0x7f9b27b53000, 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 [ 42.638745][ T5160] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 42.659218][ T5080] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5162] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5162] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5162] chdir("./file0") = 0 [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=4 /* 0.04 s */} --- 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, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./40/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5164 ./strace-static-x86_64: Process 5164 attached [pid 5164] chdir("./41") = 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) = 0x7f9b27b53000 [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(0x7f9b27b53000, 262144) = 0 [pid 5164] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 42.696086][ T5162] loop0: detected capacity change from 0 to 512 [ 42.704263][ T5162] EXT4-fs: Ignoring removed oldalloc option [ 42.710872][ T5162] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 42.721099][ T5162] EXT4-fs (loop0): orphan cleanup on readonly fs [ 42.729507][ T5162] EXT4-fs (loop0): 1 truncate cleaned up [pid 5164] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5164] close(3) = 0 [pid 5164] mkdir("./file0", 0777) = 0 [ 42.736068][ T5162] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 42.754629][ T5080] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [ 42.785365][ T5164] loop0: detected capacity change from 0 to 512 [pid 5164] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5164] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5164] chdir("./file0") = 0 [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=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./41", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./41", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./41/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./41/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./41/binderfs") = 0 umount2("./41/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./41/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./41/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./41/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./41/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./41/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5166 ./strace-static-x86_64: Process 5166 attached [pid 5166] chdir("./42") = 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) = 0x7f9b27b53000 [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(0x7f9b27b53000, 262144) = 0 [pid 5166] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 42.789777][ T5082] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 42.793411][ T5164] EXT4-fs: Ignoring removed oldalloc option [ 42.808349][ T5164] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 42.818240][ T5164] EXT4-fs (loop0): orphan cleanup on readonly fs [ 42.826931][ T5164] EXT4-fs (loop0): 1 truncate cleaned up [ 42.832985][ T5164] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5166] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5166] chdir("./file0") = 0 [pid 5166] ioctl(4, LOOP_CLR_FD) = 0 [pid 5166] close(4) = 0 [pid 5166] exit_group(0) = ? [ 42.854435][ T5080] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [ 42.892692][ T5166] loop0: detected capacity change from 0 to 512 [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=5 /* 0.05 s */} --- 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, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./42/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./42/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./42/binderfs") = 0 umount2("./42/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./42/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./42/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./42/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./42/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./42/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./42") = 0 mkdir("./43", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5168 ./strace-static-x86_64: Process 5168 attached [pid 5168] chdir("./43") = 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) = 0x7f9b27b53000 [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(0x7f9b27b53000, 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 [ 42.901171][ T5166] EXT4-fs: Ignoring removed oldalloc option [ 42.907707][ T5166] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 42.918035][ T5166] EXT4-fs (loop0): orphan cleanup on readonly fs [ 42.926579][ T5166] EXT4-fs (loop0): 1 truncate cleaned up [ 42.932444][ T5166] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [ 42.951141][ T5080] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [pid 5168] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5168] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5168] chdir("./file0") = 0 [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=5 /* 0.05 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, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./43/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./43/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./43/binderfs") = 0 umount2("./43/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./43/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./43/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./43/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./43/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./43/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./43") = 0 mkdir("./44", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5171 ./strace-static-x86_64: Process 5171 attached [pid 5171] chdir("./44") = 0 [pid 5171] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5171] setpgid(0, 0) = 0 [pid 5171] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5171] write(3, "1000", 4) = 4 [pid 5171] close(3) = 0 [pid 5171] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5171] memfd_create("syzkaller", 0) = 3 [pid 5171] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5171] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5171] munmap(0x7f9b27b53000, 262144) = 0 [pid 5171] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 42.987762][ T5168] loop0: detected capacity change from 0 to 512 [ 42.996137][ T5168] EXT4-fs: Ignoring removed oldalloc option [ 43.002821][ T5168] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 43.012696][ T5168] EXT4-fs (loop0): orphan cleanup on readonly fs [ 43.021294][ T5168] EXT4-fs (loop0): 1 truncate cleaned up [pid 5171] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5171] close(3) = 0 [pid 5171] mkdir("./file0", 0777) = 0 [pid 5171] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5171] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5171] chdir("./file0") = 0 [pid 5171] ioctl(4, LOOP_CLR_FD) = 0 [ 43.027380][ T5168] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback. [pid 5171] close(4) = 0 [pid 5171] exit_group(0) = ? [pid 5171] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5171, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./44", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./44", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./44/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./44") = 0 mkdir("./45", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5173 ./strace-static-x86_64: Process 5173 attached [pid 5173] chdir("./45") = 0 [pid 5173] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5173] setpgid(0, 0) = 0 [pid 5173] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5173] write(3, "1000", 4) = 4 [pid 5173] close(3) = 0 [pid 5173] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5173] memfd_create("syzkaller", 0) = 3 [pid 5173] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5173] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5173] munmap(0x7f9b27b53000, 262144) = 0 [pid 5173] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5173] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5173] close(3) = 0 [pid 5173] mkdir("./file0", 0777) = 0 [ 43.077474][ T5171] loop0: detected capacity change from 0 to 512 [ 43.085634][ T5171] EXT4-fs: Ignoring removed oldalloc option [ 43.092395][ T5171] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 43.102694][ T5171] EXT4-fs (loop0): orphan cleanup on readonly fs [ 43.111387][ T5171] EXT4-fs (loop0): 1 truncate cleaned up [pid 5173] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5173] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5173] chdir("./file0") = 0 [pid 5173] ioctl(4, LOOP_CLR_FD) = 0 [pid 5173] close(4) = 0 [pid 5173] exit_group(0) = ? [pid 5173] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5173, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- umount2("./45", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./45", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./45/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./45/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./45/binderfs") = 0 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./45/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./45") = 0 mkdir("./46", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5175 attached , child_tidptr=0x5555559195d0) = 5175 [pid 5175] chdir("./46") = 0 [pid 5175] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5175] setpgid(0, 0) = 0 [pid 5175] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5175] write(3, "1000", 4) = 4 [pid 5175] close(3) = 0 [pid 5175] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5175] memfd_create("syzkaller", 0) = 3 [pid 5175] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5175] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5175] munmap(0x7f9b27b53000, 262144) = 0 [pid 5175] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5175] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5175] close(3) = 0 [pid 5175] mkdir("./file0", 0777) = 0 [ 43.168946][ T5173] loop0: detected capacity change from 0 to 512 [ 43.178104][ T5173] EXT4-fs: Ignoring removed oldalloc option [ 43.184642][ T5173] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 43.194531][ T5173] EXT4-fs (loop0): orphan cleanup on readonly fs [ 43.202966][ T5173] EXT4-fs (loop0): 1 truncate cleaned up [pid 5175] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5175] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5175] chdir("./file0") = 0 [pid 5175] ioctl(4, LOOP_CLR_FD) = 0 [pid 5175] close(4) = 0 [pid 5175] exit_group(0) = ? [pid 5175] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5175, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./46/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./46") = 0 mkdir("./47", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5177 ./strace-static-x86_64: Process 5177 attached [pid 5177] chdir("./47") = 0 [pid 5177] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5177] setpgid(0, 0) = 0 [pid 5177] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5177] write(3, "1000", 4) = 4 [pid 5177] close(3) = 0 [pid 5177] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5177] memfd_create("syzkaller", 0) = 3 [pid 5177] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5177] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5177] munmap(0x7f9b27b53000, 262144) = 0 [pid 5177] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5177] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5177] close(3) = 0 [pid 5177] mkdir("./file0", 0777) = 0 [ 43.260559][ T5175] loop0: detected capacity change from 0 to 512 [ 43.268496][ T5175] EXT4-fs: Ignoring removed oldalloc option [ 43.275005][ T5175] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 43.285594][ T5175] EXT4-fs (loop0): orphan cleanup on readonly fs [ 43.294664][ T5175] EXT4-fs (loop0): 1 truncate cleaned up [pid 5177] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5177] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5177] chdir("./file0") = 0 [pid 5177] ioctl(4, LOOP_CLR_FD) = 0 [pid 5177] close(4) = 0 [pid 5177] exit_group(0) = ? [pid 5177] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5177, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./47", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./47", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./47/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./47") = 0 mkdir("./48", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5179 ./strace-static-x86_64: Process 5179 attached [pid 5179] chdir("./48") = 0 [pid 5179] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5179] setpgid(0, 0) = 0 [pid 5179] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5179] write(3, "1000", 4) = 4 [pid 5179] close(3) = 0 [pid 5179] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5179] memfd_create("syzkaller", 0) = 3 [pid 5179] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5179] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5179] munmap(0x7f9b27b53000, 262144) = 0 [pid 5179] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5179] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5179] close(3) = 0 [pid 5179] mkdir("./file0", 0777) = 0 [pid 5179] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5179] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5179] chdir("./file0") = 0 [pid 5179] ioctl(4, LOOP_CLR_FD) = 0 [pid 5179] close(4) = 0 [ 43.346162][ T5177] loop0: detected capacity change from 0 to 512 [ 43.354496][ T5177] EXT4-fs: Ignoring removed oldalloc option [ 43.361473][ T5177] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 43.371824][ T5177] EXT4-fs (loop0): orphan cleanup on readonly fs [ 43.380065][ T5177] EXT4-fs (loop0): 1 truncate cleaned up [pid 5179] exit_group(0) = ? [pid 5179] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5179, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 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, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./48/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5181 ./strace-static-x86_64: Process 5181 attached [pid 5181] chdir("./49") = 0 [pid 5181] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5181] setpgid(0, 0) = 0 [pid 5181] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5181] write(3, "1000", 4) = 4 [pid 5181] close(3) = 0 [pid 5181] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5181] memfd_create("syzkaller", 0) = 3 [pid 5181] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5181] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5181] munmap(0x7f9b27b53000, 262144) = 0 [pid 5181] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5181] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5181] close(3) = 0 [pid 5181] mkdir("./file0", 0777) = 0 [ 43.419609][ T5179] loop0: detected capacity change from 0 to 512 [ 43.427393][ T5179] EXT4-fs: Ignoring removed oldalloc option [ 43.433955][ T5179] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 43.444039][ T5179] EXT4-fs (loop0): orphan cleanup on readonly fs [ 43.452557][ T5179] EXT4-fs (loop0): 1 truncate cleaned up [pid 5181] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5181] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5181] chdir("./file0") = 0 [pid 5181] ioctl(4, LOOP_CLR_FD) = 0 [pid 5181] close(4) = 0 [pid 5181] exit_group(0) = ? [pid 5181] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5181, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 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, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./49/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./49/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./49/binderfs") = 0 umount2("./49/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./49/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./49/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./49/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5183 ./strace-static-x86_64: Process 5183 attached [pid 5183] chdir("./50") = 0 [pid 5183] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5183] setpgid(0, 0) = 0 [pid 5183] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5183] write(3, "1000", 4) = 4 [pid 5183] close(3) = 0 [pid 5183] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5183] memfd_create("syzkaller", 0) = 3 [pid 5183] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5183] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5183] munmap(0x7f9b27b53000, 262144) = 0 [pid 5183] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5183] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5183] close(3) = 0 [pid 5183] mkdir("./file0", 0777) = 0 [ 43.495174][ T5181] loop0: detected capacity change from 0 to 512 [ 43.499398][ T5082] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 43.503113][ T5181] EXT4-fs: Ignoring removed oldalloc option [ 43.519034][ T5181] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 43.530382][ T5181] EXT4-fs (loop0): orphan cleanup on readonly fs [ 43.538787][ T5181] EXT4-fs (loop0): 1 truncate cleaned up [pid 5183] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5183] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5183] chdir("./file0") = 0 [pid 5183] ioctl(4, LOOP_CLR_FD) = 0 [pid 5183] close(4) = 0 [pid 5183] exit_group(0) = ? [pid 5183] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5183, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- 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, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./50/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./50") = 0 mkdir("./51", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5185 ./strace-static-x86_64: Process 5185 attached [pid 5185] chdir("./51") = 0 [pid 5185] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5185] setpgid(0, 0) = 0 [pid 5185] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5185] write(3, "1000", 4) = 4 [pid 5185] close(3) = 0 [pid 5185] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5185] memfd_create("syzkaller", 0) = 3 [pid 5185] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5185] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5185] munmap(0x7f9b27b53000, 262144) = 0 [pid 5185] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5185] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5185] close(3) = 0 [pid 5185] mkdir("./file0", 0777) = 0 [pid 5185] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5185] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5185] chdir("./file0") = 0 [pid 5185] ioctl(4, LOOP_CLR_FD) = 0 [ 43.590048][ T5183] loop0: detected capacity change from 0 to 512 [ 43.598713][ T5183] EXT4-fs: Ignoring removed oldalloc option [ 43.605325][ T5183] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 43.615120][ T5183] EXT4-fs (loop0): orphan cleanup on readonly fs [ 43.623407][ T5183] EXT4-fs (loop0): 1 truncate cleaned up [pid 5185] close(4) = 0 [pid 5185] exit_group(0) = ? [pid 5185] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5185, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./51/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./51/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./51/binderfs") = 0 umount2("./51/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./51/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./51/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./51/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./51/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./51/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5187 ./strace-static-x86_64: Process 5187 attached [pid 5187] chdir("./52") = 0 [pid 5187] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5187] setpgid(0, 0) = 0 [pid 5187] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5187] write(3, "1000", 4) = 4 [pid 5187] close(3) = 0 [pid 5187] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5187] memfd_create("syzkaller", 0) = 3 [pid 5187] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5187] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5187] munmap(0x7f9b27b53000, 262144) = 0 [pid 5187] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5187] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5187] close(3) = 0 [pid 5187] mkdir("./file0", 0777) = 0 [pid 5187] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [ 43.653511][ T5185] loop0: detected capacity change from 0 to 512 [ 43.662316][ T5185] EXT4-fs: Ignoring removed oldalloc option [ 43.669255][ T5185] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 43.679163][ T5185] EXT4-fs (loop0): orphan cleanup on readonly fs [ 43.687855][ T5185] EXT4-fs (loop0): 1 truncate cleaned up [pid 5187] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5187] chdir("./file0") = 0 [pid 5187] ioctl(4, LOOP_CLR_FD) = 0 [pid 5187] close(4) = 0 [pid 5187] exit_group(0) = ? [pid 5187] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5187, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 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, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./52/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./52/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./52/binderfs") = 0 umount2("./52/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./52/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./52/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./52/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./52/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./52/file0") = 0 getdents64(3, 0x55555591a620 /* 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 5189 attached , child_tidptr=0x5555559195d0) = 5189 [pid 5189] chdir("./53") = 0 [pid 5189] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5189] setpgid(0, 0) = 0 [pid 5189] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5189] write(3, "1000", 4) = 4 [pid 5189] close(3) = 0 [pid 5189] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5189] memfd_create("syzkaller", 0) = 3 [pid 5189] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5189] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5189] munmap(0x7f9b27b53000, 262144) = 0 [pid 5189] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5189] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5189] close(3) = 0 [pid 5189] mkdir("./file0", 0777) = 0 [ 43.735752][ T5187] loop0: detected capacity change from 0 to 512 [ 43.744345][ T5187] EXT4-fs: Ignoring removed oldalloc option [ 43.751303][ T5187] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 43.761099][ T5187] EXT4-fs (loop0): orphan cleanup on readonly fs [ 43.769335][ T5187] EXT4-fs (loop0): 1 truncate cleaned up [pid 5189] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5189] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5189] chdir("./file0") = 0 [pid 5189] ioctl(4, LOOP_CLR_FD) = 0 [pid 5189] close(4) = 0 [pid 5189] exit_group(0) = ? [pid 5189] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5189, si_uid=0, si_status=0, si_utime=0, si_stime=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, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./53/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./53/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./53/binderfs") = 0 umount2("./53/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./53/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./53/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./53/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./53/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./53/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5191 ./strace-static-x86_64: Process 5191 attached [pid 5191] chdir("./54") = 0 [pid 5191] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5191] setpgid(0, 0) = 0 [pid 5191] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5191] write(3, "1000", 4) = 4 [pid 5191] close(3) = 0 [pid 5191] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5191] memfd_create("syzkaller", 0) = 3 [pid 5191] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5191] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5191] munmap(0x7f9b27b53000, 262144) = 0 [pid 5191] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5191] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5191] close(3) = 0 [pid 5191] mkdir("./file0", 0777) = 0 [ 43.827635][ T5189] loop0: detected capacity change from 0 to 512 [ 43.835331][ T5189] EXT4-fs: Ignoring removed oldalloc option [ 43.842118][ T5189] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 43.852434][ T5189] EXT4-fs (loop0): orphan cleanup on readonly fs [ 43.860664][ T5189] EXT4-fs (loop0): 1 truncate cleaned up [pid 5191] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5191] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5191] chdir("./file0") = 0 [pid 5191] ioctl(4, LOOP_CLR_FD) = 0 [pid 5191] close(4) = 0 [pid 5191] exit_group(0) = ? [pid 5191] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5191, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 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, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./54/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5193 ./strace-static-x86_64: Process 5193 attached [pid 5193] chdir("./55") = 0 [pid 5193] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5193] setpgid(0, 0) = 0 [pid 5193] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5193] write(3, "1000", 4) = 4 [pid 5193] close(3) = 0 [pid 5193] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5193] memfd_create("syzkaller", 0) = 3 [pid 5193] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5193] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5193] munmap(0x7f9b27b53000, 262144) = 0 [pid 5193] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5193] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5193] close(3) = 0 [pid 5193] mkdir("./file0", 0777) = 0 [ 43.918417][ T5191] loop0: detected capacity change from 0 to 512 [ 43.926353][ T5191] EXT4-fs: Ignoring removed oldalloc option [ 43.932812][ T5191] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 43.942735][ T5191] EXT4-fs (loop0): orphan cleanup on readonly fs [ 43.951404][ T5191] EXT4-fs (loop0): 1 truncate cleaned up [pid 5193] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5193] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5193] chdir("./file0") = 0 [pid 5193] ioctl(4, LOOP_CLR_FD) = 0 [pid 5193] close(4) = 0 [pid 5193] exit_group(0) = ? [pid 5193] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5193, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 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, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./55/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./55/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./55/binderfs") = 0 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./55/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./55") = 0 mkdir("./56", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5195 attached , child_tidptr=0x5555559195d0) = 5195 [pid 5195] chdir("./56") = 0 [pid 5195] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5195] setpgid(0, 0) = 0 [pid 5195] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5195] write(3, "1000", 4) = 4 [pid 5195] close(3) = 0 [pid 5195] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5195] memfd_create("syzkaller", 0) = 3 [pid 5195] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5195] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5195] munmap(0x7f9b27b53000, 262144) = 0 [pid 5195] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5195] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5195] close(3) = 0 [pid 5195] mkdir("./file0", 0777) = 0 [pid 5195] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5195] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5195] chdir("./file0") = 0 [pid 5195] ioctl(4, LOOP_CLR_FD) = 0 [ 44.001544][ T5193] loop0: detected capacity change from 0 to 512 [ 44.009646][ T5193] EXT4-fs: Ignoring removed oldalloc option [ 44.016118][ T5193] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 44.026302][ T5193] EXT4-fs (loop0): orphan cleanup on readonly fs [ 44.034688][ T5193] EXT4-fs (loop0): 1 truncate cleaned up [pid 5195] close(4) = 0 [pid 5195] exit_group(0) = ? [pid 5195] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5195, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 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, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./56/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./56") = 0 mkdir("./57", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5197 attached , child_tidptr=0x5555559195d0) = 5197 [pid 5197] chdir("./57") = 0 [pid 5197] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5197] setpgid(0, 0) = 0 [pid 5197] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5197] write(3, "1000", 4) = 4 [pid 5197] close(3) = 0 [pid 5197] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5197] memfd_create("syzkaller", 0) = 3 [pid 5197] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5197] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5197] munmap(0x7f9b27b53000, 262144) = 0 [pid 5197] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5197] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5197] close(3) = 0 [pid 5197] mkdir("./file0", 0777) = 0 [pid 5197] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5197] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5197] chdir("./file0") = 0 [pid 5197] ioctl(4, LOOP_CLR_FD) = 0 [ 44.081664][ T5195] loop0: detected capacity change from 0 to 512 [ 44.090284][ T5195] EXT4-fs: Ignoring removed oldalloc option [ 44.097266][ T5195] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 44.107095][ T5195] EXT4-fs (loop0): orphan cleanup on readonly fs [ 44.115618][ T5195] EXT4-fs (loop0): 1 truncate cleaned up [pid 5197] close(4) = 0 [pid 5197] exit_group(0) = ? [pid 5197] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5197, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- 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, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./57/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./57") = 0 mkdir("./58", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5199 ./strace-static-x86_64: Process 5199 attached [pid 5199] chdir("./58") = 0 [pid 5199] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5199] setpgid(0, 0) = 0 [pid 5199] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5199] write(3, "1000", 4) = 4 [pid 5199] close(3) = 0 [pid 5199] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5199] memfd_create("syzkaller", 0) = 3 [pid 5199] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5199] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5199] munmap(0x7f9b27b53000, 262144) = 0 [pid 5199] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5199] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5199] close(3) = 0 [pid 5199] mkdir("./file0", 0777) = 0 [ 44.161398][ T5197] loop0: detected capacity change from 0 to 512 [ 44.169282][ T5197] EXT4-fs: Ignoring removed oldalloc option [ 44.175849][ T5197] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 44.186345][ T5197] EXT4-fs (loop0): orphan cleanup on readonly fs [ 44.194650][ T5197] EXT4-fs (loop0): 1 truncate cleaned up [pid 5199] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5199] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5199] chdir("./file0") = 0 [pid 5199] ioctl(4, LOOP_CLR_FD) = 0 [pid 5199] close(4) = 0 [pid 5199] exit_group(0) = ? [pid 5199] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5199, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- umount2("./58", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./58", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./58/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./58/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./58/binderfs") = 0 umount2("./58/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./58/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./58/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./58/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./58/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./58/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5201 ./strace-static-x86_64: Process 5201 attached [pid 5201] chdir("./59") = 0 [pid 5201] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5201] setpgid(0, 0) = 0 [pid 5201] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5201] write(3, "1000", 4) = 4 [pid 5201] close(3) = 0 [pid 5201] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5201] memfd_create("syzkaller", 0) = 3 [pid 5201] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5201] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5201] munmap(0x7f9b27b53000, 262144) = 0 [pid 5201] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5201] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5201] close(3) = 0 [pid 5201] mkdir("./file0", 0777) = 0 [pid 5201] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5201] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5201] chdir("./file0") = 0 [pid 5201] ioctl(4, LOOP_CLR_FD) = 0 [pid 5201] close(4) = 0 [pid 5201] exit_group(0) = ? [pid 5201] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5201, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [ 44.248881][ T5199] loop0: detected capacity change from 0 to 512 [ 44.256780][ T5199] EXT4-fs: Ignoring removed oldalloc option [ 44.263296][ T5199] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 44.273789][ T5199] EXT4-fs (loop0): orphan cleanup on readonly fs [ 44.282022][ T5199] EXT4-fs (loop0): 1 truncate cleaned up restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./59", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./59", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./59/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5203 ./strace-static-x86_64: Process 5203 attached [pid 5203] chdir("./60") = 0 [pid 5203] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5203] setpgid(0, 0) = 0 [pid 5203] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5203] write(3, "1000", 4) = 4 [pid 5203] close(3) = 0 [pid 5203] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5203] memfd_create("syzkaller", 0) = 3 [pid 5203] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5203] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5203] munmap(0x7f9b27b53000, 262144) = 0 [pid 5203] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5203] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5203] close(3) = 0 [pid 5203] mkdir("./file0", 0777) = 0 [ 44.325173][ T5201] loop0: detected capacity change from 0 to 512 [ 44.333537][ T5201] EXT4-fs: Ignoring removed oldalloc option [ 44.340328][ T5201] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 44.350042][ T5201] EXT4-fs (loop0): orphan cleanup on readonly fs [ 44.358989][ T5201] EXT4-fs (loop0): 1 truncate cleaned up [pid 5203] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5203] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5203] chdir("./file0") = 0 [pid 5203] ioctl(4, LOOP_CLR_FD) = 0 [pid 5203] close(4) = 0 [pid 5203] exit_group(0) = ? [pid 5203] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5203, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./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, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./60/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./60/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./60/binderfs") = 0 umount2("./60/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./60/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./60/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./60/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./60/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./60/file0") = 0 getdents64(3, 0x55555591a620 /* 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./strace-static-x86_64: Process 5205 attached [pid 5205] chdir("./61") = 0 [pid 5205] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5080] <... clone resumed>, child_tidptr=0x5555559195d0) = 5205 [pid 5205] <... prctl resumed>) = 0 [pid 5205] setpgid(0, 0) = 0 [pid 5205] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5205] write(3, "1000", 4) = 4 [pid 5205] close(3) = 0 [pid 5205] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5205] memfd_create("syzkaller", 0) = 3 [pid 5205] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5205] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5205] munmap(0x7f9b27b53000, 262144) = 0 [pid 5205] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5205] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5205] close(3) = 0 [pid 5205] mkdir("./file0", 0777) = 0 [ 44.409844][ T5203] loop0: detected capacity change from 0 to 512 [ 44.418320][ T5203] EXT4-fs: Ignoring removed oldalloc option [ 44.424826][ T5203] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 44.434952][ T5203] EXT4-fs (loop0): orphan cleanup on readonly fs [ 44.443580][ T5203] EXT4-fs (loop0): 1 truncate cleaned up [pid 5205] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5205] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5205] chdir("./file0") = 0 [pid 5205] ioctl(4, LOOP_CLR_FD) = 0 [pid 5205] close(4) = 0 [pid 5205] exit_group(0) = ? [pid 5205] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5205, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./61", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./61", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 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 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./61/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5207 ./strace-static-x86_64: Process 5207 attached [pid 5207] chdir("./62") = 0 [pid 5207] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5207] setpgid(0, 0) = 0 [pid 5207] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5207] write(3, "1000", 4) = 4 [pid 5207] close(3) = 0 [pid 5207] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5207] memfd_create("syzkaller", 0) = 3 [pid 5207] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5207] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5207] munmap(0x7f9b27b53000, 262144) = 0 [pid 5207] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5207] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5207] close(3) = 0 [pid 5207] mkdir("./file0", 0777) = 0 [pid 5207] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5207] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5207] chdir("./file0") = 0 [ 44.497256][ T5205] loop0: detected capacity change from 0 to 512 [ 44.505388][ T5205] EXT4-fs: Ignoring removed oldalloc option [ 44.512659][ T5205] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 44.522362][ T5205] EXT4-fs (loop0): orphan cleanup on readonly fs [ 44.530828][ T5205] EXT4-fs (loop0): 1 truncate cleaned up [pid 5207] ioctl(4, LOOP_CLR_FD) = 0 [pid 5207] close(4) = 0 [pid 5207] exit_group(0) = ? [pid 5207] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5207, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./62", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./62", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./62/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./62/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./62/binderfs") = 0 umount2("./62/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./62/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./62/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./62/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./62/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./62/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5209 ./strace-static-x86_64: Process 5209 attached [pid 5209] chdir("./63") = 0 [pid 5209] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5209] setpgid(0, 0) = 0 [pid 5209] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5209] write(3, "1000", 4) = 4 [pid 5209] close(3) = 0 [pid 5209] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5209] memfd_create("syzkaller", 0) = 3 [pid 5209] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5209] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5209] munmap(0x7f9b27b53000, 262144) = 0 [pid 5209] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5209] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5209] close(3) = 0 [pid 5209] mkdir("./file0", 0777) = 0 [pid 5209] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5209] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5209] chdir("./file0") = 0 [pid 5209] ioctl(4, LOOP_CLR_FD) = 0 [ 44.572913][ T5207] loop0: detected capacity change from 0 to 512 [ 44.581466][ T5207] EXT4-fs: Ignoring removed oldalloc option [ 44.588523][ T5207] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 44.598501][ T5207] EXT4-fs (loop0): orphan cleanup on readonly fs [ 44.606932][ T5207] EXT4-fs (loop0): 1 truncate cleaned up [pid 5209] close(4) = 0 [pid 5209] exit_group(0) = ? [pid 5209] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5209, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 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, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./63/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./63/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./63/binderfs") = 0 umount2("./63/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./63/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./63/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./63/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./63/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./63/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./63") = 0 mkdir("./64", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5211 ./strace-static-x86_64: Process 5211 attached [pid 5211] chdir("./64") = 0 [pid 5211] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5211] setpgid(0, 0) = 0 [pid 5211] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5211] write(3, "1000", 4) = 4 [pid 5211] close(3) = 0 [pid 5211] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5211] memfd_create("syzkaller", 0) = 3 [pid 5211] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5211] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5211] munmap(0x7f9b27b53000, 262144) = 0 [pid 5211] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5211] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5211] close(3) = 0 [pid 5211] mkdir("./file0", 0777) = 0 [pid 5211] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5211] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5211] chdir("./file0") = 0 [pid 5211] ioctl(4, LOOP_CLR_FD) = 0 [ 44.640221][ T5209] loop0: detected capacity change from 0 to 512 [ 44.648359][ T5209] EXT4-fs: Ignoring removed oldalloc option [ 44.655074][ T5209] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 44.664870][ T5209] EXT4-fs (loop0): orphan cleanup on readonly fs [ 44.673460][ T5209] EXT4-fs (loop0): 1 truncate cleaned up [pid 5211] close(4) = 0 [pid 5211] exit_group(0) = ? [pid 5211] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5211, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 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, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./64/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./64/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./64/binderfs") = 0 umount2("./64/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./64/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./64/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./64/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./64/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./64/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./64") = 0 mkdir("./65", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5213 ./strace-static-x86_64: Process 5213 attached [pid 5213] chdir("./65") = 0 [pid 5213] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5213] setpgid(0, 0) = 0 [pid 5213] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5213] write(3, "1000", 4) = 4 [pid 5213] close(3) = 0 [pid 5213] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5213] memfd_create("syzkaller", 0) = 3 [pid 5213] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5213] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5213] munmap(0x7f9b27b53000, 262144) = 0 [pid 5213] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5213] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5213] close(3) = 0 [pid 5213] mkdir("./file0", 0777) = 0 [ 44.711288][ T5211] loop0: detected capacity change from 0 to 512 [ 44.719204][ T5211] EXT4-fs: Ignoring removed oldalloc option [ 44.725732][ T5211] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 44.735659][ T5211] EXT4-fs (loop0): orphan cleanup on readonly fs [ 44.744650][ T5211] EXT4-fs (loop0): 1 truncate cleaned up [pid 5213] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5213] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5213] chdir("./file0") = 0 [pid 5213] ioctl(4, LOOP_CLR_FD) = 0 [pid 5213] close(4) = 0 [pid 5213] exit_group(0) = ? [pid 5213] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5213, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./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, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./65/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./65/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./65/binderfs") = 0 umount2("./65/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./65/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./65/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./65/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./65/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./65/file0") = 0 getdents64(3, 0x55555591a620 /* 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./strace-static-x86_64: Process 5215 attached , child_tidptr=0x5555559195d0) = 5215 [pid 5215] chdir("./66") = 0 [pid 5215] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5215] setpgid(0, 0) = 0 [pid 5215] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5215] write(3, "1000", 4) = 4 [pid 5215] close(3) = 0 [pid 5215] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5215] memfd_create("syzkaller", 0) = 3 [pid 5215] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5215] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5215] munmap(0x7f9b27b53000, 262144) = 0 [pid 5215] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5215] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5215] close(3) = 0 [pid 5215] mkdir("./file0", 0777) = 0 [pid 5215] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5215] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5215] chdir("./file0") = 0 [pid 5215] ioctl(4, LOOP_CLR_FD) = 0 [ 44.801151][ T5213] loop0: detected capacity change from 0 to 512 [ 44.809411][ T5213] EXT4-fs: Ignoring removed oldalloc option [ 44.815970][ T5213] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 44.826019][ T5213] EXT4-fs (loop0): orphan cleanup on readonly fs [ 44.834452][ T5213] EXT4-fs (loop0): 1 truncate cleaned up [pid 5215] close(4) = 0 [pid 5215] exit_group(0) = ? [pid 5215] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5215, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./66", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./66", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./66/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./66/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./66/binderfs") = 0 umount2("./66/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./66/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./66/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./66/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./66/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./66/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5217 ./strace-static-x86_64: Process 5217 attached [pid 5217] chdir("./67") = 0 [pid 5217] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5217] setpgid(0, 0) = 0 [pid 5217] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5217] write(3, "1000", 4) = 4 [pid 5217] close(3) = 0 [pid 5217] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5217] memfd_create("syzkaller", 0) = 3 [pid 5217] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5217] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5217] munmap(0x7f9b27b53000, 262144) = 0 [pid 5217] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5217] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5217] close(3) = 0 [pid 5217] mkdir("./file0", 0777) = 0 [ 44.875352][ T5215] loop0: detected capacity change from 0 to 512 [ 44.884115][ T5215] EXT4-fs: Ignoring removed oldalloc option [ 44.891148][ T5215] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 44.900724][ T5215] EXT4-fs (loop0): orphan cleanup on readonly fs [ 44.909173][ T5215] EXT4-fs (loop0): 1 truncate cleaned up [pid 5217] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5217] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5217] chdir("./file0") = 0 [pid 5217] ioctl(4, LOOP_CLR_FD) = 0 [pid 5217] close(4) = 0 [pid 5217] exit_group(0) = ? [pid 5217] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5217, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./67", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./67", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./67/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./67/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./67/binderfs") = 0 umount2("./67/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./67/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./67/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./67/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./67/file0") = 0 getdents64(3, 0x55555591a620 /* 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./strace-static-x86_64: Process 5219 attached , child_tidptr=0x5555559195d0) = 5219 [pid 5219] chdir("./68") = 0 [pid 5219] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5219] setpgid(0, 0) = 0 [pid 5219] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5219] write(3, "1000", 4) = 4 [pid 5219] close(3) = 0 [pid 5219] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5219] memfd_create("syzkaller", 0) = 3 [pid 5219] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5219] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5219] munmap(0x7f9b27b53000, 262144) = 0 [pid 5219] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5219] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5219] close(3) = 0 [pid 5219] mkdir("./file0", 0777) = 0 [ 44.964670][ T5217] loop0: detected capacity change from 0 to 512 [ 44.973444][ T5217] EXT4-fs: Ignoring removed oldalloc option [ 44.980302][ T5217] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 44.990432][ T5217] EXT4-fs (loop0): orphan cleanup on readonly fs [ 44.998621][ T5217] EXT4-fs (loop0): 1 truncate cleaned up [pid 5219] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5219] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5219] chdir("./file0") = 0 [pid 5219] ioctl(4, LOOP_CLR_FD) = 0 [pid 5219] close(4) = 0 [pid 5219] exit_group(0) = ? [pid 5219] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5219, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./68/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./68/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./68/binderfs") = 0 umount2("./68/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./68/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./68/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./68/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./68/file0") = 0 getdents64(3, 0x55555591a620 /* 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./strace-static-x86_64: Process 5221 attached , child_tidptr=0x5555559195d0) = 5221 [pid 5221] chdir("./69") = 0 [pid 5221] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5221] setpgid(0, 0) = 0 [pid 5221] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5221] write(3, "1000", 4) = 4 [pid 5221] close(3) = 0 [pid 5221] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5221] memfd_create("syzkaller", 0) = 3 [pid 5221] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5221] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5221] munmap(0x7f9b27b53000, 262144) = 0 [pid 5221] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5221] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5221] close(3) = 0 [pid 5221] mkdir("./file0", 0777) = 0 [pid 5221] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5221] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5221] chdir("./file0") = 0 [pid 5221] ioctl(4, LOOP_CLR_FD) = 0 [ 45.051238][ T5219] loop0: detected capacity change from 0 to 512 [ 45.060190][ T5219] EXT4-fs: Ignoring removed oldalloc option [ 45.067213][ T5219] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 45.077731][ T5219] EXT4-fs (loop0): orphan cleanup on readonly fs [ 45.085982][ T5219] EXT4-fs (loop0): 1 truncate cleaned up [pid 5221] close(4) = 0 [pid 5221] exit_group(0) = ? [pid 5221] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5221, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./69", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./69", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./69/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./69/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./69/binderfs") = 0 umount2("./69/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./69/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5223 ./strace-static-x86_64: Process 5223 attached [pid 5223] chdir("./70") = 0 [pid 5223] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5223] setpgid(0, 0) = 0 [pid 5223] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5223] write(3, "1000", 4) = 4 [pid 5223] close(3) = 0 [pid 5223] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5223] memfd_create("syzkaller", 0) = 3 [pid 5223] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5223] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5223] munmap(0x7f9b27b53000, 262144) = 0 [pid 5223] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5223] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5223] close(3) = 0 [pid 5223] mkdir("./file0", 0777) = 0 [ 45.131114][ T5221] loop0: detected capacity change from 0 to 512 [ 45.139948][ T5221] EXT4-fs: Ignoring removed oldalloc option [ 45.147186][ T5221] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 45.157154][ T5221] EXT4-fs (loop0): orphan cleanup on readonly fs [ 45.165340][ T5221] EXT4-fs (loop0): 1 truncate cleaned up [ 45.210235][ T5223] loop0: detected capacity change from 0 to 512 [ 45.218896][ T5223] EXT4-fs: Ignoring removed oldalloc option [ 45.225500][ T5223] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 45.235541][ T5223] EXT4-fs (loop0): orphan cleanup on readonly fs [ 45.244896][ T5223] [ 45.247226][ T5223] ====================================================== [ 45.254230][ T5223] WARNING: possible circular locking dependency detected [ 45.261250][ T5223] 6.3.0-rc3-syzkaller-00012-g17214b70a159 #0 Not tainted [ 45.268276][ T5223] ------------------------------------------------------ [ 45.275272][ T5223] syz-executor403/5223 is trying to acquire lock: [ 45.281659][ T5223] ffff88807527d768 (&dquot->dq_lock){+.+.}-{3:3}, at: dquot_commit+0x51/0x570 [ 45.290540][ T5223] [ 45.290540][ T5223] but task is already holding lock: [ 45.297884][ T5223] ffff88807525dcd0 (&ei->i_data_sem/2){++++}-{3:3}, at: ext4_truncate+0xd50/0x1340 [ 45.307169][ T5223] [ 45.307169][ T5223] which lock already depends on the new lock. [ 45.307169][ T5223] [ 45.317547][ T5223] [ 45.317547][ T5223] the existing dependency chain (in reverse order) is: [ 45.326541][ T5223] [ 45.326541][ T5223] -> #2 (&ei->i_data_sem/2){++++}-{3:3}: [ 45.334338][ T5223] down_read+0x3d/0x50 [ 45.338944][ T5223] ext4_map_blocks+0x267/0x18d0 [ 45.344305][ T5223] ext4_getblk+0x61f/0x850 [ 45.349232][ T5223] ext4_bread+0x2e/0x190 [ 45.353988][ T5223] ext4_quota_write+0x218/0x620 [ 45.359347][ T5223] write_blk+0x12e/0x220 [ 45.364095][ T5223] get_free_dqblk+0x104/0x2f0 [ 45.369283][ T5223] do_insert_tree+0x3c5/0x12d0 [ 45.374576][ T5223] do_insert_tree+0x696/0x12d0 [ 45.379935][ T5223] do_insert_tree+0x696/0x12d0 [ 45.385208][ T5223] do_insert_tree+0x696/0x12d0 [ 45.390560][ T5223] qtree_write_dquot+0x3b4/0x570 [ 45.396000][ T5223] v2_write_dquot+0x120/0x250 [ 45.401179][ T5223] dquot_acquire+0x3d1/0x6c0 [ 45.406281][ T5223] ext4_acquire_dquot+0x2b1/0x3d0 [ 45.411818][ T5223] dqget+0x67d/0x1080 [ 45.416573][ T5223] __dquot_initialize+0x560/0xbe0 [ 45.422100][ T5223] ext4_process_orphan+0x47/0x410 [ 45.427626][ T5223] ext4_orphan_cleanup+0x6e5/0x1110 [ 45.433410][ T5223] ext4_fill_super+0x9630/0xad90 [ 45.438860][ T5223] get_tree_bdev+0x444/0x760 [ 45.443981][ T5223] vfs_get_tree+0x8d/0x350 [ 45.448906][ T5223] path_mount+0x1342/0x1e40 [ 45.453916][ T5223] __x64_sys_mount+0x283/0x300 [ 45.459185][ T5223] do_syscall_64+0x39/0xb0 [ 45.464108][ T5223] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 45.470507][ T5223] [ 45.470507][ T5223] -> #1 (&s->s_dquot.dqio_sem){++++}-{3:3}: [ 45.478753][ T5223] down_read+0x3d/0x50 [ 45.483350][ T5223] v2_read_dquot+0x4d/0x120 [ 45.488364][ T5223] dquot_acquire+0x1b3/0x6c0 [ 45.493463][ T5223] ext4_acquire_dquot+0x2b1/0x3d0 [ 45.498994][ T5223] dqget+0x67d/0x1080 [ 45.503478][ T5223] __dquot_initialize+0x560/0xbe0 [ 45.509006][ T5223] ext4_process_orphan+0x47/0x410 [ 45.514538][ T5223] ext4_orphan_cleanup+0x6e5/0x1110 [ 45.520268][ T5223] ext4_fill_super+0x9630/0xad90 [ 45.525709][ T5223] get_tree_bdev+0x444/0x760 [ 45.530892][ T5223] vfs_get_tree+0x8d/0x350 [ 45.535838][ T5223] path_mount+0x1342/0x1e40 [ 45.540858][ T5223] __x64_sys_mount+0x283/0x300 [ 45.546144][ T5223] do_syscall_64+0x39/0xb0 [ 45.551062][ T5223] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 45.557461][ T5223] [ 45.557461][ T5223] -> #0 (&dquot->dq_lock){+.+.}-{3:3}: [ 45.565099][ T5223] __lock_acquire+0x2ec7/0x5d40 [ 45.570974][ T5223] lock_acquire+0x1af/0x520 [ 45.575976][ T5223] __mutex_lock+0x12f/0x1350 [ 45.581066][ T5223] dquot_commit+0x51/0x570 [ 45.586074][ T5223] ext4_write_dquot+0x25f/0x330 [ 45.591427][ T5223] ext4_mark_dquot_dirty+0x115/0x1b0 [ 45.597217][ T5223] __dquot_free_space+0x773/0xaf0 [ 45.602747][ T5223] ext4_free_blocks+0x1132/0x20d0 [ 45.608284][ T5223] ext4_ext_remove_space+0x1ec4/0x4210 [ 45.614245][ T5223] ext4_ext_truncate+0x34b/0x400 [ 45.619688][ T5223] ext4_truncate+0xdb5/0x1340 [ 45.624870][ T5223] ext4_process_orphan+0x158/0x410 [ 45.630480][ T5223] ext4_orphan_cleanup+0x6e5/0x1110 [ 45.636179][ T5223] ext4_fill_super+0x9630/0xad90 [ 45.641730][ T5223] get_tree_bdev+0x444/0x760 [ 45.646824][ T5223] vfs_get_tree+0x8d/0x350 [ 45.651745][ T5223] path_mount+0x1342/0x1e40 [ 45.656752][ T5223] __x64_sys_mount+0x283/0x300 [ 45.662020][ T5223] do_syscall_64+0x39/0xb0 [ 45.666936][ T5223] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 45.673335][ T5223] [ 45.673335][ T5223] other info that might help us debug this: [ 45.673335][ T5223] [ 45.683816][ T5223] Chain exists of: [ 45.683816][ T5223] &dquot->dq_lock --> &s->s_dquot.dqio_sem --> &ei->i_data_sem/2 [ 45.683816][ T5223] [ 45.697521][ T5223] Possible unsafe locking scenario: [ 45.697521][ T5223] [ 45.704952][ T5223] CPU0 CPU1 [ 45.710306][ T5223] ---- ---- [ 45.715651][ T5223] lock(&ei->i_data_sem/2); [ 45.720222][ T5223] lock(&s->s_dquot.dqio_sem); [ 45.727575][ T5223] lock(&ei->i_data_sem/2); [ 45.734700][ T5223] lock(&dquot->dq_lock); [ 45.739111][ T5223] [ 45.739111][ T5223] *** DEADLOCK *** [ 45.739111][ T5223] [ 45.747232][ T5223] 4 locks held by syz-executor403/5223: [ 45.752750][ T5223] #0: ffff88807a9200e0 (&type->s_umount_key#27/1){+.+.}-{3:3}, at: alloc_super+0x22e/0xb60 [ 45.762823][ T5223] #1: ffff88807525de48 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_process_orphan+0x109/0x410 [ 45.773763][ T5223] #2: ffff88807525dcd0 (&ei->i_data_sem/2){++++}-{3:3}, at: ext4_truncate+0xd50/0x1340 [ 45.783830][ T5223] #3: ffffffff8c989aa8 (dquot_srcu){....}-{0:0}, at: __dquot_free_space+0x1a8/0xaf0 [ 45.793307][ T5223] [ 45.793307][ T5223] stack backtrace: [ 45.799169][ T5223] CPU: 1 PID: 5223 Comm: syz-executor403 Not tainted 6.3.0-rc3-syzkaller-00012-g17214b70a159 #0 [ 45.809576][ T5223] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 [ 45.819606][ T5223] Call Trace: [ 45.822869][ T5223] [ 45.825789][ T5223] dump_stack_lvl+0xd9/0x150 [ 45.830386][ T5223] check_noncircular+0x25f/0x2e0 [ 45.835314][ T5223] ? print_circular_bug+0x5c0/0x5c0 [ 45.840492][ T5223] ? print_usage_bug.part.0+0x660/0x660 [ 45.846019][ T5223] ? check_irq_usage+0x198/0x1a40 [ 45.851032][ T5223] __lock_acquire+0x2ec7/0x5d40 [ 45.855866][ T5223] ? mark_lock.part.0+0xee/0x1970 [ 45.860871][ T5223] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 45.866830][ T5223] ? check_path.constprop.0+0x24/0x50 [ 45.872274][ T5223] lock_acquire+0x1af/0x520 [ 45.876799][ T5223] ? dquot_commit+0x51/0x570 [ 45.881397][ T5223] ? lock_release+0x670/0x670 [ 45.886186][ T5223] __mutex_lock+0x12f/0x1350 [ 45.890769][ T5223] ? dquot_commit+0x51/0x570 [ 45.895362][ T5223] ? dquot_commit+0x51/0x570 [ 45.899934][ T5223] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 45.905897][ T5223] ? mutex_lock_io_nested+0x11a0/0x11a0 [ 45.911437][ T5223] ? find_held_lock+0x2d/0x110 [ 45.916189][ T5223] dquot_commit+0x51/0x570 [ 45.920672][ T5223] ? ext4_write_dquot+0x236/0x330 [ 45.925678][ T5223] ext4_write_dquot+0x25f/0x330 [ 45.930514][ T5223] ext4_mark_dquot_dirty+0x115/0x1b0 [ 45.935786][ T5223] __dquot_free_space+0x773/0xaf0 [ 45.940818][ T5223] ? dquot_claim_space_nodirty+0x6b0/0x6b0 [ 45.946697][ T5223] ? ext4_free_blocks+0x1610/0x20d0 [ 45.951882][ T5223] ? lock_downgrade+0x690/0x690 [ 45.956719][ T5223] ext4_free_blocks+0x1132/0x20d0 [ 45.961747][ T5223] ? ext4_mb_new_blocks+0x4b20/0x4b20 [ 45.967159][ T5223] ? __ext4_journal_ensure_credits+0x264/0x2e0 [ 45.973313][ T5223] ext4_ext_remove_space+0x1ec4/0x4210 [ 45.978765][ T5223] ? ext4_ext_index_trans_blocks+0x160/0x160 [ 45.984819][ T5223] ? ext4_es_remove_extent+0x107/0x3c0 [ 45.990293][ T5223] ? ext4_es_lookup_extent+0xb60/0xb60 [ 45.995742][ T5223] ? down_write+0x14f/0x200 [ 46.000264][ T5223] ext4_ext_truncate+0x34b/0x400 [ 46.005196][ T5223] ext4_truncate+0xdb5/0x1340 [ 46.009859][ T5223] ? ext4_punch_hole+0x1140/0x1140 [ 46.015051][ T5223] ? rwsem_down_write_slowpath+0x1220/0x1220 [ 46.021053][ T5223] ? __brelse+0x88/0xa0 [ 46.025254][ T5223] ext4_process_orphan+0x158/0x410 [ 46.030355][ T5223] ext4_orphan_cleanup+0x6e5/0x1110 [ 46.035536][ T5223] ? ext4_process_orphan+0x410/0x410 [ 46.040805][ T5223] ext4_fill_super+0x9630/0xad90 [ 46.045738][ T5223] ? ext4_reconfigure+0x2b60/0x2b60 [ 46.050947][ T5223] ? snprintf+0xbf/0x100 [ 46.055182][ T5223] ? vsprintf+0x30/0x30 [ 46.059373][ T5223] ? wait_for_completion_io_timeout+0x20/0x20 [ 46.065450][ T5223] get_tree_bdev+0x444/0x760 [ 46.070051][ T5223] ? ext4_reconfigure+0x2b60/0x2b60 [ 46.075333][ T5223] vfs_get_tree+0x8d/0x350 [ 46.079754][ T5223] path_mount+0x1342/0x1e40 [ 46.084265][ T5223] ? kmem_cache_free+0xe9/0x480 [ 46.089111][ T5223] ? finish_automount+0x9b0/0x9b0 [ 46.094216][ T5223] ? putname+0x102/0x140 [ 46.098549][ T5223] __x64_sys_mount+0x283/0x300 [ 46.103302][ T5223] ? copy_mnt_ns+0xb30/0xb30 [ 46.107883][ T5223] ? lockdep_hardirqs_on+0x7d/0x100 [ 46.113072][ T5223] ? _raw_spin_unlock_irq+0x2e/0x50 [ 46.118283][ T5223] ? ptrace_notify+0xfe/0x140 [ 46.122940][ T5223] do_syscall_64+0x39/0xb0 [ 46.127347][ T5223] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 46.133257][ T5223] RIP: 0033:0x7f9b2ffa1e7a [ 46.137689][ T5223] 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 [pid 5223] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5223] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5223] chdir("./file0") = 0 [pid 5223] ioctl(4, LOOP_CLR_FD) = 0 [pid 5223] close(4) = 0 [pid 5223] exit_group(0) = ? [pid 5223] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5223, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./70", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./70", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./70/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5225 ./strace-static-x86_64: Process 5225 attached [pid 5225] chdir("./71") = 0 [pid 5225] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5225] setpgid(0, 0) = 0 [pid 5225] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5225] write(3, "1000", 4) = 4 [pid 5225] close(3) = 0 [pid 5225] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5225] memfd_create("syzkaller", 0) = 3 [pid 5225] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5225] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5225] munmap(0x7f9b27b53000, 262144) = 0 [pid 5225] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5225] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5225] close(3) = 0 [pid 5225] mkdir("./file0", 0777) = 0 [ 46.157276][ T5223] RSP: 002b:00007ffd09dcfad8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 46.165680][ T5223] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f9b2ffa1e7a [ 46.173717][ T5223] RDX: 0000000020000040 RSI: 0000000020000500 RDI: 00007ffd09dcfae0 [ 46.181765][ T5223] RBP: 00007ffd09dcfae0 R08: 00007ffd09dcfb20 R09: 00000000000004a1 [ 46.189721][ T5223] R10: 0000000000000047 R11: 0000000000000246 R12: 0000000000000004 [ 46.197757][ T5223] R13: 00005555559192c0 R14: 00007ffd09dcfb20 R15: 0000000000000000 [ 46.205713][ T5223] [pid 5225] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5225] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5225] chdir("./file0") = 0 [pid 5225] ioctl(4, LOOP_CLR_FD) = 0 [pid 5225] close(4) = 0 [pid 5225] exit_group(0) = ? [pid 5225] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5225, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- 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, 0x55555591a620 /* 4 entries */, 32768) = 112 [ 46.209463][ T5223] EXT4-fs (loop0): 1 truncate cleaned up umount2("./71/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./71/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./71/binderfs") = 0 umount2("./71/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./71/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5227 ./strace-static-x86_64: Process 5227 attached [pid 5227] chdir("./72") = 0 [pid 5227] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5227] setpgid(0, 0) = 0 [pid 5227] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5227] write(3, "1000", 4) = 4 [pid 5227] close(3) = 0 [pid 5227] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5227] memfd_create("syzkaller", 0) = 3 [pid 5227] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5227] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5227] munmap(0x7f9b27b53000, 262144) = 0 [pid 5227] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5227] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5227] close(3) = 0 [pid 5227] mkdir("./file0", 0777) = 0 [ 46.248102][ T5225] loop0: detected capacity change from 0 to 512 [ 46.255457][ T5225] EXT4-fs: Ignoring removed oldalloc option [ 46.261807][ T5225] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 46.271560][ T5225] EXT4-fs (loop0): orphan cleanup on readonly fs [ 46.279305][ T5225] EXT4-fs (loop0): 1 truncate cleaned up [pid 5227] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5227] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5227] chdir("./file0") = 0 [pid 5227] ioctl(4, LOOP_CLR_FD) = 0 [pid 5227] close(4) = 0 [pid 5227] exit_group(0) = ? [pid 5227] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5227, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./72", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./72", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./72/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./72/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./72/binderfs") = 0 umount2("./72/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./72/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./72/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./72/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./72/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./72/file0") = 0 getdents64(3, 0x55555591a620 /* 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) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5229 ./strace-static-x86_64: Process 5229 attached [pid 5229] chdir("./73") = 0 [pid 5229] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5229] setpgid(0, 0) = 0 [pid 5229] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5229] write(3, "1000", 4) = 4 [pid 5229] close(3) = 0 [pid 5229] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5229] memfd_create("syzkaller", 0) = 3 [pid 5229] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5229] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5229] munmap(0x7f9b27b53000, 262144) = 0 [pid 5229] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5229] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5229] close(3) = 0 [pid 5229] mkdir("./file0", 0777) = 0 [pid 5229] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5229] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5229] chdir("./file0") = 0 [pid 5229] ioctl(4, LOOP_CLR_FD) = 0 [pid 5229] close(4) = 0 [ 46.304153][ T5227] loop0: detected capacity change from 0 to 512 [ 46.306961][ T5082] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 46.311309][ T5227] EXT4-fs: Ignoring removed oldalloc option [ 46.326964][ T5227] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 46.336512][ T5227] EXT4-fs (loop0): orphan cleanup on readonly fs [ 46.344251][ T5227] EXT4-fs (loop0): 1 truncate cleaned up [pid 5229] exit_group(0) = ? [pid 5229] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5229, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./73/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./73/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./73/binderfs") = 0 umount2("./73/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./73/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./73/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./73/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./73/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./73/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5231 ./strace-static-x86_64: Process 5231 attached [pid 5231] chdir("./74") = 0 [pid 5231] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5231] setpgid(0, 0) = 0 [pid 5231] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5231] write(3, "1000", 4) = 4 [pid 5231] close(3) = 0 [pid 5231] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5231] memfd_create("syzkaller", 0) = 3 [pid 5231] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5231] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5231] munmap(0x7f9b27b53000, 262144) = 0 [pid 5231] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5231] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5231] close(3) = 0 [pid 5231] mkdir("./file0", 0777) = 0 [pid 5231] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5231] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5231] chdir("./file0") = 0 [pid 5231] ioctl(4, LOOP_CLR_FD) = 0 [ 46.381794][ T5229] loop0: detected capacity change from 0 to 512 [ 46.389367][ T5229] EXT4-fs: Ignoring removed oldalloc option [ 46.395658][ T5229] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 46.405258][ T5229] EXT4-fs (loop0): orphan cleanup on readonly fs [ 46.413136][ T5229] EXT4-fs (loop0): 1 truncate cleaned up [pid 5231] close(4) = 0 [pid 5231] exit_group(0) = ? [pid 5231] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5231, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./74/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./74/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./74/binderfs") = 0 umount2("./74/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./74/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./74/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./74/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./74/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./74/file0") = 0 getdents64(3, 0x55555591a620 /* 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./strace-static-x86_64: Process 5233 attached , child_tidptr=0x5555559195d0) = 5233 [pid 5233] chdir("./75") = 0 [pid 5233] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5233] setpgid(0, 0) = 0 [pid 5233] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5233] write(3, "1000", 4) = 4 [pid 5233] close(3) = 0 [pid 5233] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5233] memfd_create("syzkaller", 0) = 3 [pid 5233] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5233] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5233] munmap(0x7f9b27b53000, 262144) = 0 [pid 5233] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5233] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5233] close(3) = 0 [pid 5233] mkdir("./file0", 0777) = 0 [pid 5233] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5233] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5233] chdir("./file0") = 0 [pid 5233] ioctl(4, LOOP_CLR_FD) = 0 [ 46.443367][ T5231] loop0: detected capacity change from 0 to 512 [ 46.451452][ T5231] EXT4-fs: Ignoring removed oldalloc option [ 46.458158][ T5231] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 46.467672][ T5231] EXT4-fs (loop0): orphan cleanup on readonly fs [ 46.475534][ T5231] EXT4-fs (loop0): 1 truncate cleaned up [pid 5233] close(4) = 0 [pid 5233] exit_group(0) = ? [pid 5233] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5233, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./75/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./75/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./75/binderfs") = 0 umount2("./75/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./75/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5235 ./strace-static-x86_64: Process 5235 attached [pid 5235] chdir("./76") = 0 [pid 5235] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5235] setpgid(0, 0) = 0 [pid 5235] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5235] write(3, "1000", 4) = 4 [pid 5235] close(3) = 0 [pid 5235] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5235] memfd_create("syzkaller", 0) = 3 [pid 5235] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5235] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5235] munmap(0x7f9b27b53000, 262144) = 0 [pid 5235] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5235] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5235] close(3) = 0 [pid 5235] mkdir("./file0", 0777) = 0 [ 46.514221][ T5233] loop0: detected capacity change from 0 to 512 [ 46.521662][ T5233] EXT4-fs: Ignoring removed oldalloc option [ 46.528165][ T5233] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 46.537889][ T5233] EXT4-fs (loop0): orphan cleanup on readonly fs [ 46.545782][ T5233] EXT4-fs (loop0): 1 truncate cleaned up [pid 5235] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5235] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5235] chdir("./file0") = 0 [pid 5235] ioctl(4, LOOP_CLR_FD) = 0 [pid 5235] close(4) = 0 [pid 5235] exit_group(0) = ? [pid 5235] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5235, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./76/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5237 ./strace-static-x86_64: Process 5237 attached [pid 5237] chdir("./77") = 0 [pid 5237] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5237] setpgid(0, 0) = 0 [pid 5237] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5237] write(3, "1000", 4) = 4 [pid 5237] close(3) = 0 [pid 5237] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5237] memfd_create("syzkaller", 0) = 3 [pid 5237] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5237] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5237] munmap(0x7f9b27b53000, 262144) = 0 [pid 5237] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5237] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5237] close(3) = 0 [pid 5237] mkdir("./file0", 0777) = 0 [pid 5237] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5237] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5237] chdir("./file0") = 0 [pid 5237] ioctl(4, LOOP_CLR_FD) = 0 [ 46.574215][ T5235] loop0: detected capacity change from 0 to 512 [ 46.578016][ T5082] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 46.581494][ T5235] EXT4-fs: Ignoring removed oldalloc option [ 46.596910][ T5235] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 46.606112][ T5235] EXT4-fs (loop0): orphan cleanup on readonly fs [ 46.613949][ T5235] EXT4-fs (loop0): 1 truncate cleaned up [pid 5237] close(4) = 0 [pid 5237] exit_group(0) = ? [pid 5237] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5237, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./77", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./77", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./77/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5239 ./strace-static-x86_64: Process 5239 attached [pid 5239] chdir("./78") = 0 [pid 5239] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5239] setpgid(0, 0) = 0 [pid 5239] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5239] write(3, "1000", 4) = 4 [pid 5239] close(3) = 0 [pid 5239] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5239] memfd_create("syzkaller", 0) = 3 [pid 5239] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5239] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5239] munmap(0x7f9b27b53000, 262144) = 0 [pid 5239] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5239] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5239] close(3) = 0 [pid 5239] mkdir("./file0", 0777) = 0 [pid 5239] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5239] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5239] chdir("./file0") = 0 [pid 5239] ioctl(4, LOOP_CLR_FD) = 0 [ 46.651083][ T5237] loop0: detected capacity change from 0 to 512 [ 46.658967][ T5237] EXT4-fs: Ignoring removed oldalloc option [ 46.665351][ T5237] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 46.675908][ T5237] EXT4-fs (loop0): orphan cleanup on readonly fs [ 46.683751][ T5237] EXT4-fs (loop0): 1 truncate cleaned up [pid 5239] close(4) = 0 [pid 5239] exit_group(0) = ? [pid 5239] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5239, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./78", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./78", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./78/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./78/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./78/binderfs") = 0 umount2("./78/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./78/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./78/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./78/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./78/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./78/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5241 ./strace-static-x86_64: Process 5241 attached [pid 5241] chdir("./79") = 0 [pid 5241] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5241] setpgid(0, 0) = 0 [pid 5241] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5241] write(3, "1000", 4) = 4 [pid 5241] close(3) = 0 [pid 5241] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5241] memfd_create("syzkaller", 0) = 3 [pid 5241] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5241] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5241] munmap(0x7f9b27b53000, 262144) = 0 [pid 5241] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5241] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5241] close(3) = 0 [pid 5241] mkdir("./file0", 0777) = 0 [ 46.713521][ T5239] loop0: detected capacity change from 0 to 512 [ 46.721230][ T5239] EXT4-fs: Ignoring removed oldalloc option [ 46.727667][ T5239] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 46.737165][ T5239] EXT4-fs (loop0): orphan cleanup on readonly fs [ 46.744858][ T5239] EXT4-fs (loop0): 1 truncate cleaned up [pid 5241] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5241] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5241] chdir("./file0") = 0 [pid 5241] ioctl(4, LOOP_CLR_FD) = 0 [pid 5241] close(4) = 0 [pid 5241] exit_group(0) = ? [pid 5241] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5241, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./79", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./79", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./79/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./79") = 0 mkdir("./80", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5243 ./strace-static-x86_64: Process 5243 attached [pid 5243] chdir("./80") = 0 [pid 5243] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5243] setpgid(0, 0) = 0 [pid 5243] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5243] write(3, "1000", 4) = 4 [pid 5243] close(3) = 0 [pid 5243] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5243] memfd_create("syzkaller", 0) = 3 [pid 5243] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5243] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5243] munmap(0x7f9b27b53000, 262144) = 0 [pid 5243] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5243] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5243] close(3) = 0 [pid 5243] mkdir("./file0", 0777) = 0 [ 46.774923][ T5241] loop0: detected capacity change from 0 to 512 [ 46.775506][ T5082] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 46.782074][ T5241] EXT4-fs: Ignoring removed oldalloc option [ 46.797537][ T5241] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 46.807514][ T5241] EXT4-fs (loop0): orphan cleanup on readonly fs [ 46.815229][ T5241] EXT4-fs (loop0): 1 truncate cleaned up [pid 5243] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5243] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5243] chdir("./file0") = 0 [pid 5243] ioctl(4, LOOP_CLR_FD) = 0 [pid 5243] close(4) = 0 [pid 5243] exit_group(0) = ? [pid 5243] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5243, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./80", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./80", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./80/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./80/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./80/binderfs") = 0 umount2("./80/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./80/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./80/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./80/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./80/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./80/file0") = 0 getdents64(3, 0x55555591a620 /* 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 5245 attached , child_tidptr=0x5555559195d0) = 5245 [pid 5245] chdir("./81") = 0 [pid 5245] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5245] setpgid(0, 0) = 0 [pid 5245] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5245] write(3, "1000", 4) = 4 [pid 5245] close(3) = 0 [pid 5245] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5245] memfd_create("syzkaller", 0) = 3 [pid 5245] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5245] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5245] munmap(0x7f9b27b53000, 262144) = 0 [pid 5245] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5245] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5245] close(3) = 0 [pid 5245] mkdir("./file0", 0777) = 0 [ 46.851020][ T5243] loop0: detected capacity change from 0 to 512 [ 46.858518][ T5243] EXT4-fs: Ignoring removed oldalloc option [ 46.864957][ T5243] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 46.874607][ T5243] EXT4-fs (loop0): orphan cleanup on readonly fs [ 46.882502][ T5243] EXT4-fs (loop0): 1 truncate cleaned up [pid 5245] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5245] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5245] chdir("./file0") = 0 [pid 5245] ioctl(4, LOOP_CLR_FD) = 0 [pid 5245] close(4) = 0 [pid 5245] exit_group(0) = ? [pid 5245] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5245, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- 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, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./81/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./81/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./81/binderfs") = 0 umount2("./81/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./81/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./81/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./81/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./81/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./81/file0") = 0 getdents64(3, 0x55555591a620 /* 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./strace-static-x86_64: Process 5247 attached , child_tidptr=0x5555559195d0) = 5247 [pid 5247] chdir("./82") = 0 [pid 5247] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5247] setpgid(0, 0) = 0 [pid 5247] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5247] write(3, "1000", 4) = 4 [pid 5247] close(3) = 0 [pid 5247] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5247] memfd_create("syzkaller", 0) = 3 [pid 5247] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5247] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5247] munmap(0x7f9b27b53000, 262144) = 0 [pid 5247] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5247] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5247] close(3) = 0 [pid 5247] mkdir("./file0", 0777) = 0 [pid 5247] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5247] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5247] chdir("./file0") = 0 [pid 5247] ioctl(4, LOOP_CLR_FD) = 0 [pid 5247] close(4) = 0 [pid 5247] exit_group(0) = ? [pid 5247] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5247, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [ 46.941161][ T5245] loop0: detected capacity change from 0 to 512 [ 46.948591][ T5245] EXT4-fs: Ignoring removed oldalloc option [ 46.954992][ T5245] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 46.964625][ T5245] EXT4-fs (loop0): orphan cleanup on readonly fs [ 46.972602][ T5245] EXT4-fs (loop0): 1 truncate cleaned up restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./82", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./82", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./82/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5249 ./strace-static-x86_64: Process 5249 attached [pid 5249] chdir("./83") = 0 [pid 5249] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5249] setpgid(0, 0) = 0 [pid 5249] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5249] write(3, "1000", 4) = 4 [pid 5249] close(3) = 0 [pid 5249] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5249] memfd_create("syzkaller", 0) = 3 [pid 5249] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5249] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5249] munmap(0x7f9b27b53000, 262144) = 0 [pid 5249] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5249] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5249] close(3) = 0 [pid 5249] mkdir("./file0", 0777) = 0 [pid 5249] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5249] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5249] chdir("./file0") = 0 [pid 5249] ioctl(4, LOOP_CLR_FD) = 0 [pid 5249] close(4) = 0 [ 47.012332][ T5247] loop0: detected capacity change from 0 to 512 [ 47.019997][ T5247] EXT4-fs: Ignoring removed oldalloc option [ 47.026585][ T5247] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 47.035942][ T5247] EXT4-fs (loop0): orphan cleanup on readonly fs [ 47.043850][ T5247] EXT4-fs (loop0): 1 truncate cleaned up [pid 5249] exit_group(0) = ? [pid 5249] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5249, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./83", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./83", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./83/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./83") = 0 mkdir("./84", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5251 ./strace-static-x86_64: Process 5251 attached [pid 5251] chdir("./84") = 0 [pid 5251] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5251] setpgid(0, 0) = 0 [pid 5251] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5251] write(3, "1000", 4) = 4 [pid 5251] close(3) = 0 [pid 5251] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5251] memfd_create("syzkaller", 0) = 3 [pid 5251] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5251] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5251] munmap(0x7f9b27b53000, 262144) = 0 [pid 5251] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5251] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5251] close(3) = 0 [pid 5251] mkdir("./file0", 0777) = 0 [ 47.070272][ T5249] loop0: detected capacity change from 0 to 512 [ 47.077607][ T5249] EXT4-fs: Ignoring removed oldalloc option [ 47.083908][ T5249] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 47.093674][ T5249] EXT4-fs (loop0): orphan cleanup on readonly fs [ 47.101576][ T5249] EXT4-fs (loop0): 1 truncate cleaned up [pid 5251] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5251] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5251] chdir("./file0") = 0 [pid 5251] ioctl(4, LOOP_CLR_FD) = 0 [pid 5251] close(4) = 0 [pid 5251] exit_group(0) = ? [pid 5251] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5251, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./84", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./84", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./84/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5253 ./strace-static-x86_64: Process 5253 attached [pid 5253] chdir("./85") = 0 [pid 5253] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5253] setpgid(0, 0) = 0 [pid 5253] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5253] write(3, "1000", 4) = 4 [pid 5253] close(3) = 0 [pid 5253] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5253] memfd_create("syzkaller", 0) = 3 [pid 5253] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5253] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5253] munmap(0x7f9b27b53000, 262144) = 0 [pid 5253] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5253] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5253] close(3) = 0 [pid 5253] mkdir("./file0", 0777) = 0 [ 47.130382][ T5251] loop0: detected capacity change from 0 to 512 [ 47.131511][ T5082] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 47.137481][ T5251] EXT4-fs: Ignoring removed oldalloc option [ 47.154002][ T5251] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 47.164270][ T5251] EXT4-fs (loop0): orphan cleanup on readonly fs [ 47.171995][ T5251] EXT4-fs (loop0): 1 truncate cleaned up [pid 5253] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5253] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5253] chdir("./file0") = 0 [pid 5253] ioctl(4, LOOP_CLR_FD) = 0 [pid 5253] close(4) = 0 [pid 5253] exit_group(0) = ? [pid 5253] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5253, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 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, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./85/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./85") = 0 mkdir("./86", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5255 ./strace-static-x86_64: Process 5255 attached [pid 5255] chdir("./86") = 0 [pid 5255] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5255] setpgid(0, 0) = 0 [pid 5255] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5255] write(3, "1000", 4) = 4 [pid 5255] close(3) = 0 [pid 5255] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5255] memfd_create("syzkaller", 0) = 3 [pid 5255] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5255] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5255] munmap(0x7f9b27b53000, 262144) = 0 [pid 5255] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5255] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5255] close(3) = 0 [pid 5255] mkdir("./file0", 0777) = 0 [pid 5255] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5255] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5255] chdir("./file0") = 0 [pid 5255] ioctl(4, LOOP_CLR_FD) = 0 [ 47.196429][ T5253] loop0: detected capacity change from 0 to 512 [ 47.197377][ T5082] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 47.203524][ T5253] EXT4-fs: Ignoring removed oldalloc option [ 47.218971][ T5253] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 47.228400][ T5253] EXT4-fs (loop0): orphan cleanup on readonly fs [ 47.236125][ T5253] EXT4-fs (loop0): 1 truncate cleaned up [pid 5255] close(4) = 0 [pid 5255] exit_group(0) = ? [pid 5255] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5255, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 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, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./86/file0") = 0 getdents64(3, 0x55555591a620 /* 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 5257 attached , child_tidptr=0x5555559195d0) = 5257 [pid 5257] chdir("./87") = 0 [pid 5257] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5257] setpgid(0, 0) = 0 [pid 5257] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5257] write(3, "1000", 4) = 4 [pid 5257] close(3) = 0 [pid 5257] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5257] memfd_create("syzkaller", 0) = 3 [pid 5257] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5257] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5257] munmap(0x7f9b27b53000, 262144) = 0 [pid 5257] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5257] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5257] close(3) = 0 [pid 5257] mkdir("./file0", 0777) = 0 [pid 5257] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5257] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5257] chdir("./file0") = 0 [pid 5257] ioctl(4, LOOP_CLR_FD) = 0 [pid 5257] close(4) = 0 [pid 5257] exit_group(0) = ? [pid 5257] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5257, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./87", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./87", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./87/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./87/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./87/binderfs") = 0 umount2("./87/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./87/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 47.259831][ T5255] loop0: detected capacity change from 0 to 512 [ 47.267383][ T5255] EXT4-fs: Ignoring removed oldalloc option [ 47.273832][ T5255] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 47.283360][ T5255] EXT4-fs (loop0): orphan cleanup on readonly fs [ 47.291432][ T5255] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./87/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./87") = 0 mkdir("./88", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5259 attached , child_tidptr=0x5555559195d0) = 5259 [pid 5259] chdir("./88") = 0 [pid 5259] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5259] setpgid(0, 0) = 0 [pid 5259] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5259] write(3, "1000", 4) = 4 [pid 5259] close(3) = 0 [pid 5259] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5259] memfd_create("syzkaller", 0) = 3 [pid 5259] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5259] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5259] munmap(0x7f9b27b53000, 262144) = 0 [pid 5259] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5259] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5259] close(3) = 0 [pid 5259] mkdir("./file0", 0777) = 0 [pid 5259] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5259] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5259] chdir("./file0") = 0 [pid 5259] ioctl(4, LOOP_CLR_FD) = 0 [ 47.332360][ T5257] loop0: detected capacity change from 0 to 512 [ 47.339605][ T5257] EXT4-fs: Ignoring removed oldalloc option [ 47.346086][ T5257] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 47.355663][ T5257] EXT4-fs (loop0): orphan cleanup on readonly fs [ 47.363397][ T5257] EXT4-fs (loop0): 1 truncate cleaned up [pid 5259] close(4) = 0 [pid 5259] exit_group(0) = ? [pid 5259] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5259, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./88/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./88/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./88/binderfs") = 0 umount2("./88/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./88/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5261 ./strace-static-x86_64: Process 5261 attached [pid 5261] chdir("./89") = 0 [pid 5261] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5261] setpgid(0, 0) = 0 [pid 5261] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5261] write(3, "1000", 4) = 4 [pid 5261] close(3) = 0 [pid 5261] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5261] memfd_create("syzkaller", 0) = 3 [pid 5261] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5261] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5261] munmap(0x7f9b27b53000, 262144) = 0 [pid 5261] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5261] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5261] close(3) = 0 [pid 5261] mkdir("./file0", 0777) = 0 [pid 5261] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5261] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5261] chdir("./file0") = 0 [pid 5261] ioctl(4, LOOP_CLR_FD) = 0 [ 47.398773][ T5259] loop0: detected capacity change from 0 to 512 [ 47.406356][ T5259] EXT4-fs: Ignoring removed oldalloc option [ 47.412918][ T5259] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 47.422402][ T5259] EXT4-fs (loop0): orphan cleanup on readonly fs [ 47.430559][ T5259] EXT4-fs (loop0): 1 truncate cleaned up [pid 5261] close(4) = 0 [pid 5261] exit_group(0) = ? [pid 5261] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5261, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./89", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./89", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./89/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./89") = 0 mkdir("./90", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5263 ./strace-static-x86_64: Process 5263 attached [pid 5263] chdir("./90") = 0 [pid 5263] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5263] setpgid(0, 0) = 0 [pid 5263] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5263] write(3, "1000", 4) = 4 [pid 5263] close(3) = 0 [pid 5263] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5263] memfd_create("syzkaller", 0) = 3 [pid 5263] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5263] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5263] munmap(0x7f9b27b53000, 262144) = 0 [pid 5263] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5263] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5263] close(3) = 0 [pid 5263] mkdir("./file0", 0777) = 0 [pid 5263] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5263] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5263] chdir("./file0") = 0 [pid 5263] ioctl(4, LOOP_CLR_FD) = 0 [pid 5263] close(4) = 0 [ 47.466186][ T5261] loop0: detected capacity change from 0 to 512 [ 47.473712][ T5261] EXT4-fs: Ignoring removed oldalloc option [ 47.480343][ T5261] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 47.489926][ T5261] EXT4-fs (loop0): orphan cleanup on readonly fs [ 47.497757][ T5261] EXT4-fs (loop0): 1 truncate cleaned up [pid 5263] exit_group(0) = ? [pid 5263] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5263, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./90", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./90", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./90/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5265 ./strace-static-x86_64: Process 5265 attached [pid 5265] chdir("./91") = 0 [pid 5265] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5265] setpgid(0, 0) = 0 [pid 5265] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5265] write(3, "1000", 4) = 4 [pid 5265] close(3) = 0 [pid 5265] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5265] memfd_create("syzkaller", 0) = 3 [pid 5265] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5265] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5265] munmap(0x7f9b27b53000, 262144) = 0 [pid 5265] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5265] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5265] close(3) = 0 [pid 5265] mkdir("./file0", 0777) = 0 [pid 5265] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5265] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5265] chdir("./file0") = 0 [pid 5265] ioctl(4, LOOP_CLR_FD) = 0 [ 47.528351][ T5263] loop0: detected capacity change from 0 to 512 [ 47.535719][ T5263] EXT4-fs: Ignoring removed oldalloc option [ 47.542521][ T5263] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 47.552070][ T5263] EXT4-fs (loop0): orphan cleanup on readonly fs [ 47.559711][ T5263] EXT4-fs (loop0): 1 truncate cleaned up [pid 5265] close(4) = 0 [pid 5265] exit_group(0) = ? [pid 5265] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5265, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./91", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./91", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./91/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./91/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./91/binderfs") = 0 umount2("./91/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./91/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./91/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./91/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./91/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./91/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5267 ./strace-static-x86_64: Process 5267 attached [pid 5267] chdir("./92") = 0 [pid 5267] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5267] setpgid(0, 0) = 0 [pid 5267] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5267] write(3, "1000", 4) = 4 [pid 5267] close(3) = 0 [pid 5267] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5267] memfd_create("syzkaller", 0) = 3 [pid 5267] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5267] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5267] munmap(0x7f9b27b53000, 262144) = 0 [pid 5267] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5267] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5267] close(3) = 0 [pid 5267] mkdir("./file0", 0777) = 0 [pid 5267] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5267] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5267] chdir("./file0") = 0 [pid 5267] ioctl(4, LOOP_CLR_FD) = 0 [pid 5267] close(4) = 0 [ 47.592786][ T5265] loop0: detected capacity change from 0 to 512 [ 47.600237][ T5265] EXT4-fs: Ignoring removed oldalloc option [ 47.606750][ T5265] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 47.616887][ T5265] EXT4-fs (loop0): orphan cleanup on readonly fs [ 47.624765][ T5265] EXT4-fs (loop0): 1 truncate cleaned up [pid 5267] exit_group(0) = ? [pid 5267] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5267, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./92", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./92", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./92/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./92") = 0 mkdir("./93", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5269 attached [pid 5269] chdir("./93") = 0 [pid 5269] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5269] setpgid(0, 0) = 0 [pid 5269] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5269] write(3, "1000", 4 [pid 5080] <... clone resumed>, child_tidptr=0x5555559195d0) = 5269 [pid 5269] <... write resumed>) = 4 [pid 5269] close(3) = 0 [pid 5269] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5269] memfd_create("syzkaller", 0) = 3 [pid 5269] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5269] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5269] munmap(0x7f9b27b53000, 262144) = 0 [pid 5269] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5269] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5269] close(3) = 0 [pid 5269] mkdir("./file0", 0777) = 0 [pid 5269] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5269] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5269] chdir("./file0") = 0 [pid 5269] ioctl(4, LOOP_CLR_FD) = 0 [pid 5269] close(4) = 0 [ 47.653881][ T5267] loop0: detected capacity change from 0 to 512 [ 47.661134][ T5267] EXT4-fs: Ignoring removed oldalloc option [ 47.667782][ T5267] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 47.677275][ T5267] EXT4-fs (loop0): orphan cleanup on readonly fs [ 47.685106][ T5267] EXT4-fs (loop0): 1 truncate cleaned up [pid 5269] exit_group(0) = ? [pid 5269] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5269, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./93", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./93", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./93/file0") = 0 getdents64(3, 0x55555591a620 /* 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 5271 attached [pid 5271] chdir("./94") = 0 [pid 5271] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5271] setpgid(0, 0) = 0 [pid 5271] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5080] <... clone resumed>, child_tidptr=0x5555559195d0) = 5271 [pid 5271] <... openat resumed>) = 3 [pid 5271] write(3, "1000", 4) = 4 [pid 5271] close(3) = 0 [pid 5271] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5271] memfd_create("syzkaller", 0) = 3 [pid 5271] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5271] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5271] munmap(0x7f9b27b53000, 262144) = 0 [pid 5271] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5271] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5271] close(3) = 0 [pid 5271] mkdir("./file0", 0777) = 0 [pid 5271] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5271] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5271] chdir("./file0") = 0 [pid 5271] ioctl(4, LOOP_CLR_FD) = 0 [pid 5271] close(4) = 0 [pid 5271] exit_group(0) = ? [ 47.719640][ T5269] loop0: detected capacity change from 0 to 512 [ 47.727003][ T5269] EXT4-fs: Ignoring removed oldalloc option [ 47.733541][ T5269] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 47.742956][ T5269] EXT4-fs (loop0): orphan cleanup on readonly fs [ 47.750863][ T5269] EXT4-fs (loop0): 1 truncate cleaned up [pid 5271] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5271, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./94", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./94", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./94/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./94/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./94/binderfs") = 0 umount2("./94/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./94/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./94/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./94/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./94/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./94/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5273 ./strace-static-x86_64: Process 5273 attached [pid 5273] chdir("./95") = 0 [pid 5273] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5273] setpgid(0, 0) = 0 [pid 5273] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5273] write(3, "1000", 4) = 4 [pid 5273] close(3) = 0 [pid 5273] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5273] memfd_create("syzkaller", 0) = 3 [pid 5273] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5273] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5273] munmap(0x7f9b27b53000, 262144) = 0 [pid 5273] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5273] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5273] close(3) = 0 [pid 5273] mkdir("./file0", 0777) = 0 [ 47.791638][ T5271] loop0: detected capacity change from 0 to 512 [ 47.799159][ T5271] EXT4-fs: Ignoring removed oldalloc option [ 47.805555][ T5271] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 47.815063][ T5271] EXT4-fs (loop0): orphan cleanup on readonly fs [ 47.822859][ T5271] EXT4-fs (loop0): 1 truncate cleaned up [pid 5273] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5273] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5273] chdir("./file0") = 0 [pid 5273] ioctl(4, LOOP_CLR_FD) = 0 [pid 5273] close(4) = 0 [pid 5273] exit_group(0) = ? [pid 5273] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5273, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- 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, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./95/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./95/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./95/binderfs") = 0 umount2("./95/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./95/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./95/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./95/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./95/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./95/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5275 ./strace-static-x86_64: Process 5275 attached [pid 5275] chdir("./96") = 0 [pid 5275] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5275] setpgid(0, 0) = 0 [pid 5275] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5275] write(3, "1000", 4) = 4 [pid 5275] close(3) = 0 [pid 5275] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5275] memfd_create("syzkaller", 0) = 3 [pid 5275] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5275] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5275] munmap(0x7f9b27b53000, 262144) = 0 [pid 5275] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5275] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5275] close(3) = 0 [pid 5275] mkdir("./file0", 0777) = 0 [ 47.850879][ T5273] loop0: detected capacity change from 0 to 512 [ 47.852099][ T5082] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 47.857981][ T5273] EXT4-fs: Ignoring removed oldalloc option [ 47.873401][ T5273] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 47.884136][ T5273] EXT4-fs (loop0): orphan cleanup on readonly fs [ 47.892067][ T5273] EXT4-fs (loop0): 1 truncate cleaned up [pid 5275] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5275] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5275] chdir("./file0") = 0 [pid 5275] ioctl(4, LOOP_CLR_FD) = 0 [pid 5275] close(4) = 0 [pid 5275] exit_group(0) = ? [pid 5275] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5275, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./96", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./96", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./96/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5277 ./strace-static-x86_64: Process 5277 attached [pid 5277] chdir("./97") = 0 [pid 5277] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5277] setpgid(0, 0) = 0 [pid 5277] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5277] write(3, "1000", 4) = 4 [pid 5277] close(3) = 0 [pid 5277] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5277] memfd_create("syzkaller", 0) = 3 [pid 5277] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5277] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5277] munmap(0x7f9b27b53000, 262144) = 0 [pid 5277] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5277] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5277] close(3) = 0 [pid 5277] mkdir("./file0", 0777) = 0 [pid 5277] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5277] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5277] chdir("./file0") = 0 [pid 5277] ioctl(4, LOOP_CLR_FD) = 0 [pid 5277] close(4) = 0 [pid 5277] exit_group(0) = ? [pid 5277] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5277, si_uid=0, si_status=0, si_utime=0, si_stime=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, 0x55555591a620 /* 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 [ 47.913343][ T5275] loop0: detected capacity change from 0 to 512 [ 47.915663][ T5082] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 47.920500][ T5275] EXT4-fs: Ignoring removed oldalloc option [ 47.935869][ T5275] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 47.945170][ T5275] EXT4-fs (loop0): orphan cleanup on readonly fs [ 47.952957][ T5275] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./97/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5279 ./strace-static-x86_64: Process 5279 attached [pid 5279] chdir("./98") = 0 [pid 5279] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5279] setpgid(0, 0) = 0 [pid 5279] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5279] write(3, "1000", 4) = 4 [pid 5279] close(3) = 0 [pid 5279] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5279] memfd_create("syzkaller", 0) = 3 [pid 5279] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5279] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5279] munmap(0x7f9b27b53000, 262144) = 0 [pid 5279] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5279] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5279] close(3) = 0 [pid 5279] mkdir("./file0", 0777) = 0 [pid 5279] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5279] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5279] chdir("./file0") = 0 [pid 5279] ioctl(4, LOOP_CLR_FD) = 0 [pid 5279] close(4) = 0 [pid 5279] exit_group(0) = ? [ 47.989175][ T5277] loop0: detected capacity change from 0 to 512 [ 47.996749][ T5277] EXT4-fs: Ignoring removed oldalloc option [ 48.002967][ T5277] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 48.012375][ T5277] EXT4-fs (loop0): orphan cleanup on readonly fs [ 48.020347][ T5277] EXT4-fs (loop0): 1 truncate cleaned up [pid 5279] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5279, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 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, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./98/file0") = 0 getdents64(3, 0x55555591a620 /* 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./strace-static-x86_64: Process 5281 attached , child_tidptr=0x5555559195d0) = 5281 [pid 5281] chdir("./99") = 0 [pid 5281] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5281] setpgid(0, 0) = 0 [pid 5281] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5281] write(3, "1000", 4) = 4 [pid 5281] close(3) = 0 [pid 5281] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5281] memfd_create("syzkaller", 0) = 3 [pid 5281] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5281] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5281] munmap(0x7f9b27b53000, 262144) = 0 [pid 5281] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5281] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5281] close(3) = 0 [pid 5281] mkdir("./file0", 0777) = 0 [pid 5281] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5281] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5281] chdir("./file0") = 0 [pid 5281] ioctl(4, LOOP_CLR_FD) = 0 [pid 5281] close(4) = 0 [ 48.049091][ T5279] loop0: detected capacity change from 0 to 512 [ 48.056691][ T5279] EXT4-fs: Ignoring removed oldalloc option [ 48.063007][ T5279] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 48.072766][ T5279] EXT4-fs (loop0): orphan cleanup on readonly fs [ 48.080351][ T5279] EXT4-fs (loop0): 1 truncate cleaned up [pid 5281] exit_group(0) = ? [pid 5281] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5281, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./99/file0") = 0 getdents64(3, 0x55555591a620 /* 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./strace-static-x86_64: Process 5283 attached , child_tidptr=0x5555559195d0) = 5283 [pid 5283] chdir("./100") = 0 [pid 5283] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5283] setpgid(0, 0) = 0 [pid 5283] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5283] write(3, "1000", 4) = 4 [pid 5283] close(3) = 0 [pid 5283] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5283] memfd_create("syzkaller", 0) = 3 [pid 5283] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5283] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5283] munmap(0x7f9b27b53000, 262144) = 0 [pid 5283] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5283] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5283] close(3) = 0 [pid 5283] mkdir("./file0", 0777) = 0 [pid 5283] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5283] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5283] chdir("./file0") = 0 [pid 5283] ioctl(4, LOOP_CLR_FD) = 0 [pid 5283] close(4) = 0 [pid 5283] exit_group(0) = ? [pid 5283] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5283, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [ 48.116821][ T5281] loop0: detected capacity change from 0 to 512 [ 48.124228][ T5281] EXT4-fs: Ignoring removed oldalloc option [ 48.130660][ T5281] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 48.140054][ T5281] EXT4-fs (loop0): orphan cleanup on readonly fs [ 48.147792][ T5281] EXT4-fs (loop0): 1 truncate cleaned up restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./100", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./100", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./100/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./100") = 0 mkdir("./101", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5285 ./strace-static-x86_64: Process 5285 attached [pid 5285] chdir("./101") = 0 [pid 5285] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5285] setpgid(0, 0) = 0 [pid 5285] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5285] write(3, "1000", 4) = 4 [pid 5285] close(3) = 0 [pid 5285] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5285] memfd_create("syzkaller", 0) = 3 [pid 5285] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5285] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5285] munmap(0x7f9b27b53000, 262144) = 0 [pid 5285] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5285] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5285] close(3) = 0 [pid 5285] mkdir("./file0", 0777) = 0 [pid 5285] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5285] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5285] chdir("./file0") = 0 [pid 5285] ioctl(4, LOOP_CLR_FD) = 0 [ 48.188401][ T5283] loop0: detected capacity change from 0 to 512 [ 48.195865][ T5283] EXT4-fs: Ignoring removed oldalloc option [ 48.202278][ T5283] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 48.211713][ T5283] EXT4-fs (loop0): orphan cleanup on readonly fs [ 48.219823][ T5283] EXT4-fs (loop0): 1 truncate cleaned up [pid 5285] close(4) = 0 [pid 5285] exit_group(0) = ? [pid 5285] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5285, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./101/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./101") = 0 mkdir("./102", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5287 ./strace-static-x86_64: Process 5287 attached [pid 5287] chdir("./102") = 0 [pid 5287] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5287] setpgid(0, 0) = 0 [pid 5287] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5287] write(3, "1000", 4) = 4 [pid 5287] close(3) = 0 [pid 5287] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5287] memfd_create("syzkaller", 0) = 3 [pid 5287] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5287] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5287] munmap(0x7f9b27b53000, 262144) = 0 [pid 5287] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5287] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5287] close(3) = 0 [pid 5287] mkdir("./file0", 0777) = 0 [pid 5287] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5287] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5287] chdir("./file0") = 0 [pid 5287] ioctl(4, LOOP_CLR_FD) = 0 [pid 5287] close(4) = 0 [pid 5287] exit_group(0) = ? [pid 5287] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5287, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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, 0x55555591a620 /* 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 [ 48.251794][ T5285] loop0: detected capacity change from 0 to 512 [ 48.259524][ T5285] EXT4-fs: Ignoring removed oldalloc option [ 48.265995][ T5285] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 48.275617][ T5285] EXT4-fs (loop0): orphan cleanup on readonly fs [ 48.283982][ T5285] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./102/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./102") = 0 mkdir("./103", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5289 ./strace-static-x86_64: Process 5289 attached [pid 5289] chdir("./103") = 0 [pid 5289] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5289] setpgid(0, 0) = 0 [pid 5289] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5289] write(3, "1000", 4) = 4 [pid 5289] close(3) = 0 [pid 5289] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5289] memfd_create("syzkaller", 0) = 3 [pid 5289] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5289] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5289] munmap(0x7f9b27b53000, 262144) = 0 [pid 5289] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5289] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5289] close(3) = 0 [pid 5289] mkdir("./file0", 0777) = 0 [pid 5289] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5289] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5289] chdir("./file0") = 0 [pid 5289] ioctl(4, LOOP_CLR_FD) = 0 [pid 5289] close(4) = 0 [pid 5289] exit_group(0) = ? [pid 5289] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5289, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 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, 0x55555591a620 /* 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 [ 48.312778][ T5287] loop0: detected capacity change from 0 to 512 [ 48.319959][ T5287] EXT4-fs: Ignoring removed oldalloc option [ 48.326652][ T5287] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 48.336018][ T5287] EXT4-fs (loop0): orphan cleanup on readonly fs [ 48.344248][ T5287] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./103/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5291 ./strace-static-x86_64: Process 5291 attached [pid 5291] chdir("./104") = 0 [pid 5291] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5291] setpgid(0, 0) = 0 [pid 5291] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5291] write(3, "1000", 4) = 4 [pid 5291] close(3) = 0 [pid 5291] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5291] memfd_create("syzkaller", 0) = 3 [pid 5291] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5291] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5291] munmap(0x7f9b27b53000, 262144) = 0 [pid 5291] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5291] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5291] close(3) = 0 [pid 5291] mkdir("./file0", 0777) = 0 [pid 5291] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5291] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5291] chdir("./file0") = 0 [pid 5291] ioctl(4, LOOP_CLR_FD) = 0 [pid 5291] close(4) = 0 [ 48.373879][ T5289] loop0: detected capacity change from 0 to 512 [ 48.381219][ T5289] EXT4-fs: Ignoring removed oldalloc option [ 48.387862][ T5289] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 48.397339][ T5289] EXT4-fs (loop0): orphan cleanup on readonly fs [ 48.405057][ T5289] EXT4-fs (loop0): 1 truncate cleaned up [pid 5291] exit_group(0) = ? [pid 5291] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5291, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 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, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./104/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./104") = 0 mkdir("./105", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5293 ./strace-static-x86_64: Process 5293 attached [pid 5293] chdir("./105") = 0 [pid 5293] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5293] setpgid(0, 0) = 0 [pid 5293] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5293] write(3, "1000", 4) = 4 [pid 5293] close(3) = 0 [pid 5293] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5293] memfd_create("syzkaller", 0) = 3 [pid 5293] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5293] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5293] munmap(0x7f9b27b53000, 262144) = 0 [pid 5293] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5293] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5293] close(3) = 0 [pid 5293] mkdir("./file0", 0777) = 0 [pid 5293] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5293] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5293] chdir("./file0") = 0 [pid 5293] ioctl(4, LOOP_CLR_FD) = 0 [pid 5293] close(4) = 0 [ 48.432677][ T5291] loop0: detected capacity change from 0 to 512 [ 48.439844][ T5291] EXT4-fs: Ignoring removed oldalloc option [ 48.446160][ T5291] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 48.455634][ T5291] EXT4-fs (loop0): orphan cleanup on readonly fs [ 48.463608][ T5291] EXT4-fs (loop0): 1 truncate cleaned up [pid 5293] exit_group(0) = ? [pid 5293] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5293, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./105", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./105", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./105/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./105/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./105/binderfs") = 0 umount2("./105/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./105/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./105/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./105/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./105/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./105/file0") = 0 getdents64(3, 0x55555591a620 /* 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./strace-static-x86_64: Process 5295 attached [pid 5295] chdir("./106" [pid 5080] <... clone resumed>, child_tidptr=0x5555559195d0) = 5295 [pid 5295] <... chdir resumed>) = 0 [pid 5295] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5295] setpgid(0, 0) = 0 [pid 5295] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5295] write(3, "1000", 4) = 4 [pid 5295] close(3) = 0 [pid 5295] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5295] memfd_create("syzkaller", 0) = 3 [pid 5295] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5295] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5295] munmap(0x7f9b27b53000, 262144) = 0 [pid 5295] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5295] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5295] close(3) = 0 [pid 5295] mkdir("./file0", 0777) = 0 [ 48.499835][ T5293] loop0: detected capacity change from 0 to 512 [ 48.507467][ T5293] EXT4-fs: Ignoring removed oldalloc option [ 48.513838][ T5293] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 48.523554][ T5293] EXT4-fs (loop0): orphan cleanup on readonly fs [ 48.531606][ T5293] EXT4-fs (loop0): 1 truncate cleaned up [pid 5295] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5295] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5295] chdir("./file0") = 0 [pid 5295] ioctl(4, LOOP_CLR_FD) = 0 [pid 5295] close(4) = 0 [pid 5295] exit_group(0) = ? [pid 5295] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5295, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./106", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./106", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./106/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5297 ./strace-static-x86_64: Process 5297 attached [pid 5297] chdir("./107") = 0 [pid 5297] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5297] setpgid(0, 0) = 0 [pid 5297] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5297] write(3, "1000", 4) = 4 [pid 5297] close(3) = 0 [pid 5297] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5297] memfd_create("syzkaller", 0) = 3 [pid 5297] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5297] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5297] munmap(0x7f9b27b53000, 262144) = 0 [pid 5297] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5297] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5297] close(3) = 0 [pid 5297] mkdir("./file0", 0777) = 0 [ 48.572683][ T5295] loop0: detected capacity change from 0 to 512 [ 48.580287][ T5295] EXT4-fs: Ignoring removed oldalloc option [ 48.587200][ T5295] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 48.596579][ T5295] EXT4-fs (loop0): orphan cleanup on readonly fs [ 48.604275][ T5295] EXT4-fs (loop0): 1 truncate cleaned up [pid 5297] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5297] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5297] chdir("./file0") = 0 [pid 5297] ioctl(4, LOOP_CLR_FD) = 0 [pid 5297] close(4) = 0 [pid 5297] exit_group(0) = ? [pid 5297] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5297, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./107", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./107", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./107/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./107/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./107/binderfs") = 0 umount2("./107/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./107/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./107/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./107/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./107/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./107/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5299 ./strace-static-x86_64: Process 5299 attached [pid 5299] chdir("./108") = 0 [pid 5299] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5299] setpgid(0, 0) = 0 [pid 5299] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5299] write(3, "1000", 4) = 4 [pid 5299] close(3) = 0 [pid 5299] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5299] memfd_create("syzkaller", 0) = 3 [pid 5299] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5299] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5299] munmap(0x7f9b27b53000, 262144) = 0 [pid 5299] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5299] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5299] close(3) = 0 [pid 5299] mkdir("./file0", 0777) = 0 [pid 5299] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5299] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5299] chdir("./file0") = 0 [pid 5299] ioctl(4, LOOP_CLR_FD) = 0 [pid 5299] close(4) = 0 [pid 5299] exit_group(0) = ? [ 48.661656][ T5297] loop0: detected capacity change from 0 to 512 [ 48.669068][ T5297] EXT4-fs: Ignoring removed oldalloc option [ 48.675465][ T5297] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 48.685152][ T5297] EXT4-fs (loop0): orphan cleanup on readonly fs [ 48.692990][ T5297] EXT4-fs (loop0): 1 truncate cleaned up [pid 5299] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5299, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./108/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5301 ./strace-static-x86_64: Process 5301 attached [pid 5301] chdir("./109") = 0 [pid 5301] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5301] setpgid(0, 0) = 0 [pid 5301] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5301] write(3, "1000", 4) = 4 [pid 5301] close(3) = 0 [pid 5301] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5301] memfd_create("syzkaller", 0) = 3 [pid 5301] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5301] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5301] munmap(0x7f9b27b53000, 262144) = 0 [pid 5301] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5301] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5301] close(3) = 0 [pid 5301] mkdir("./file0", 0777) = 0 [pid 5301] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5301] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5301] chdir("./file0") = 0 [pid 5301] ioctl(4, LOOP_CLR_FD) = 0 [pid 5301] close(4) = 0 [pid 5301] exit_group(0) = ? [pid 5301] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5301, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- 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, 0x55555591a620 /* 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 [ 48.723744][ T5299] loop0: detected capacity change from 0 to 512 [ 48.731180][ T5299] EXT4-fs: Ignoring removed oldalloc option [ 48.737515][ T5299] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 48.747500][ T5299] EXT4-fs (loop0): orphan cleanup on readonly fs [ 48.755391][ T5299] 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./109/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5303 ./strace-static-x86_64: Process 5303 attached [pid 5303] chdir("./110") = 0 [pid 5303] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5303] setpgid(0, 0) = 0 [pid 5303] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5303] write(3, "1000", 4) = 4 [pid 5303] close(3) = 0 [pid 5303] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5303] memfd_create("syzkaller", 0) = 3 [pid 5303] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5303] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5303] munmap(0x7f9b27b53000, 262144) = 0 [pid 5303] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5303] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5303] close(3) = 0 [pid 5303] mkdir("./file0", 0777) = 0 [pid 5303] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5303] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5303] chdir("./file0") = 0 [pid 5303] ioctl(4, LOOP_CLR_FD) = 0 [pid 5303] close(4) = 0 [ 48.784994][ T5301] loop0: detected capacity change from 0 to 512 [ 48.792393][ T5301] EXT4-fs: Ignoring removed oldalloc option [ 48.799268][ T5301] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 48.808686][ T5301] EXT4-fs (loop0): orphan cleanup on readonly fs [ 48.816618][ T5301] EXT4-fs (loop0): 1 truncate cleaned up [pid 5303] exit_group(0) = ? [pid 5303] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5303, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 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, 0x55555591a620 /* 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 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./110/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5305 ./strace-static-x86_64: Process 5305 attached [pid 5305] chdir("./111") = 0 [pid 5305] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5305] setpgid(0, 0) = 0 [pid 5305] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5305] write(3, "1000", 4) = 4 [pid 5305] close(3) = 0 [pid 5305] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5305] memfd_create("syzkaller", 0) = 3 [pid 5305] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5305] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5305] munmap(0x7f9b27b53000, 262144) = 0 [pid 5305] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5305] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5305] close(3) = 0 [pid 5305] mkdir("./file0", 0777) = 0 [pid 5305] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5305] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5305] chdir("./file0") = 0 [pid 5305] ioctl(4, LOOP_CLR_FD) = 0 [pid 5305] close(4) = 0 [pid 5305] exit_group(0) = ? [pid 5305] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5305, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 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, 0x55555591a620 /* 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 [ 48.842981][ T5303] loop0: detected capacity change from 0 to 512 [ 48.850537][ T5303] EXT4-fs: Ignoring removed oldalloc option [ 48.857172][ T5303] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 48.867243][ T5303] EXT4-fs (loop0): orphan cleanup on readonly fs [ 48.874973][ T5303] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./111/file0") = 0 getdents64(3, 0x55555591a620 /* 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./strace-static-x86_64: Process 5307 attached , child_tidptr=0x5555559195d0) = 5307 [pid 5307] chdir("./112") = 0 [pid 5307] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5307] setpgid(0, 0) = 0 [pid 5307] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5307] write(3, "1000", 4) = 4 [pid 5307] close(3) = 0 [pid 5307] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5307] memfd_create("syzkaller", 0) = 3 [pid 5307] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5307] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5307] munmap(0x7f9b27b53000, 262144) = 0 [pid 5307] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5307] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5307] close(3) = 0 [pid 5307] mkdir("./file0", 0777) = 0 [pid 5307] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5307] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5307] chdir("./file0") = 0 [pid 5307] ioctl(4, LOOP_CLR_FD) = 0 [pid 5307] close(4) = 0 [ 48.916494][ T5305] loop0: detected capacity change from 0 to 512 [ 48.924071][ T5305] EXT4-fs: Ignoring removed oldalloc option [ 48.930652][ T5305] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 48.940626][ T5305] EXT4-fs (loop0): orphan cleanup on readonly fs [ 48.948459][ T5305] EXT4-fs (loop0): 1 truncate cleaned up [pid 5307] exit_group(0) = ? [pid 5307] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5307, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./112/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5309 ./strace-static-x86_64: Process 5309 attached [pid 5309] chdir("./113") = 0 [pid 5309] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5309] setpgid(0, 0) = 0 [pid 5309] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5309] write(3, "1000", 4) = 4 [pid 5309] close(3) = 0 [pid 5309] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5309] memfd_create("syzkaller", 0) = 3 [pid 5309] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5309] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5309] munmap(0x7f9b27b53000, 262144) = 0 [pid 5309] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5309] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5309] close(3) = 0 [pid 5309] mkdir("./file0", 0777) = 0 [pid 5309] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5309] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5309] chdir("./file0") = 0 [pid 5309] ioctl(4, LOOP_CLR_FD) = 0 [pid 5309] close(4) = 0 [pid 5309] exit_group(0) = ? [pid 5309] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5309, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [ 48.980181][ T5307] loop0: detected capacity change from 0 to 512 [ 48.987710][ T5307] EXT4-fs: Ignoring removed oldalloc option [ 48.994003][ T5307] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 49.003545][ T5307] EXT4-fs (loop0): orphan cleanup on readonly fs [ 49.011408][ T5307] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x55555591a620 /* 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 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./113/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./113") = 0 mkdir("./114", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5311 ./strace-static-x86_64: Process 5311 attached [pid 5311] chdir("./114") = 0 [pid 5311] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5311] setpgid(0, 0) = 0 [pid 5311] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5311] write(3, "1000", 4) = 4 [pid 5311] close(3) = 0 [pid 5311] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5311] memfd_create("syzkaller", 0) = 3 [pid 5311] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5311] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5311] munmap(0x7f9b27b53000, 262144) = 0 [pid 5311] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5311] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5311] close(3) = 0 [pid 5311] mkdir("./file0", 0777) = 0 [pid 5311] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5311] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5311] chdir("./file0") = 0 [pid 5311] ioctl(4, LOOP_CLR_FD) = 0 [ 49.040112][ T5309] loop0: detected capacity change from 0 to 512 [ 49.047369][ T5309] EXT4-fs: Ignoring removed oldalloc option [ 49.053936][ T5309] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 49.063451][ T5309] EXT4-fs (loop0): orphan cleanup on readonly fs [ 49.071412][ T5309] EXT4-fs (loop0): 1 truncate cleaned up [pid 5311] close(4) = 0 [pid 5311] exit_group(0) = ? [pid 5311] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5311, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./114", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./114", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./114/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./114/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./114/binderfs") = 0 umount2("./114/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./114/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./114/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./114/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./114/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./114/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5313 ./strace-static-x86_64: Process 5313 attached [pid 5313] chdir("./115") = 0 [pid 5313] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5313] setpgid(0, 0) = 0 [pid 5313] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5313] write(3, "1000", 4) = 4 [pid 5313] close(3) = 0 [pid 5313] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5313] memfd_create("syzkaller", 0) = 3 [pid 5313] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5313] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5313] munmap(0x7f9b27b53000, 262144) = 0 [pid 5313] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5313] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5313] close(3) = 0 [pid 5313] mkdir("./file0", 0777) = 0 [pid 5313] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5313] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5313] chdir("./file0") = 0 [pid 5313] ioctl(4, LOOP_CLR_FD) = 0 [ 49.103737][ T5311] loop0: detected capacity change from 0 to 512 [ 49.111788][ T5311] EXT4-fs: Ignoring removed oldalloc option [ 49.118496][ T5311] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 49.127961][ T5311] EXT4-fs (loop0): orphan cleanup on readonly fs [ 49.136156][ T5311] EXT4-fs (loop0): 1 truncate cleaned up [pid 5313] close(4) = 0 [pid 5313] exit_group(0) = ? [pid 5313] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5313, si_uid=0, si_status=0, si_utime=0, si_stime=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, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./115/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./115") = 0 mkdir("./116", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5315 ./strace-static-x86_64: Process 5315 attached [pid 5315] chdir("./116") = 0 [pid 5315] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5315] setpgid(0, 0) = 0 [pid 5315] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5315] write(3, "1000", 4) = 4 [pid 5315] close(3) = 0 [pid 5315] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5315] memfd_create("syzkaller", 0) = 3 [pid 5315] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5315] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5315] munmap(0x7f9b27b53000, 262144) = 0 [pid 5315] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5315] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5315] close(3) = 0 [pid 5315] mkdir("./file0", 0777) = 0 [pid 5315] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5315] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5315] chdir("./file0") = 0 [pid 5315] ioctl(4, LOOP_CLR_FD) = 0 [ 49.179691][ T5313] loop0: detected capacity change from 0 to 512 [ 49.187576][ T5313] EXT4-fs: Ignoring removed oldalloc option [ 49.193950][ T5313] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 49.203841][ T5313] EXT4-fs (loop0): orphan cleanup on readonly fs [ 49.211916][ T5313] EXT4-fs (loop0): 1 truncate cleaned up [pid 5315] close(4) = 0 [pid 5315] exit_group(0) = ? [pid 5315] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5315, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./116", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./116", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./116/file0") = 0 getdents64(3, 0x55555591a620 /* 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 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5317 ./strace-static-x86_64: Process 5317 attached [pid 5317] chdir("./117") = 0 [pid 5317] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5317] setpgid(0, 0) = 0 [pid 5317] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5317] write(3, "1000", 4) = 4 [pid 5317] close(3) = 0 [pid 5317] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5317] memfd_create("syzkaller", 0) = 3 [pid 5317] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5317] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5317] munmap(0x7f9b27b53000, 262144) = 0 [pid 5317] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5317] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5317] close(3) = 0 [pid 5317] mkdir("./file0", 0777) = 0 [pid 5317] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5317] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5317] chdir("./file0") = 0 [pid 5317] ioctl(4, LOOP_CLR_FD) = 0 [ 49.251524][ T5315] loop0: detected capacity change from 0 to 512 [ 49.259041][ T5315] EXT4-fs: Ignoring removed oldalloc option [ 49.265540][ T5315] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 49.275289][ T5315] EXT4-fs (loop0): orphan cleanup on readonly fs [ 49.283226][ T5315] EXT4-fs (loop0): 1 truncate cleaned up [pid 5317] close(4) = 0 [pid 5317] exit_group(0) = ? [pid 5317] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5317, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./117", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./117", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./117/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./117/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./117/binderfs") = 0 umount2("./117/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./117/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./117/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./117/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./117/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./117/file0") = 0 getdents64(3, 0x55555591a620 /* 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./strace-static-x86_64: Process 5319 attached [pid 5319] chdir("./118") = 0 [pid 5319] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5319] setpgid(0, 0) = 0 [pid 5080] <... clone resumed>, child_tidptr=0x5555559195d0) = 5319 [pid 5319] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5319] write(3, "1000", 4) = 4 [pid 5319] close(3) = 0 [pid 5319] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5319] memfd_create("syzkaller", 0) = 3 [pid 5319] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5319] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5319] munmap(0x7f9b27b53000, 262144) = 0 [pid 5319] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5319] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5319] close(3) = 0 [pid 5319] mkdir("./file0", 0777) = 0 [pid 5319] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5319] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5319] chdir("./file0") = 0 [pid 5319] ioctl(4, LOOP_CLR_FD) = 0 [ 49.327412][ T5317] loop0: detected capacity change from 0 to 512 [ 49.334918][ T5317] EXT4-fs: Ignoring removed oldalloc option [ 49.341897][ T5317] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 49.351425][ T5317] EXT4-fs (loop0): orphan cleanup on readonly fs [ 49.359369][ T5317] EXT4-fs (loop0): 1 truncate cleaned up [pid 5319] close(4) = 0 [pid 5319] exit_group(0) = ? [pid 5319] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5319, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 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, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./118/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./118") = 0 mkdir("./119", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5321 ./strace-static-x86_64: Process 5321 attached [pid 5321] chdir("./119") = 0 [pid 5321] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5321] setpgid(0, 0) = 0 [pid 5321] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5321] write(3, "1000", 4) = 4 [pid 5321] close(3) = 0 [pid 5321] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5321] memfd_create("syzkaller", 0) = 3 [pid 5321] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5321] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5321] munmap(0x7f9b27b53000, 262144) = 0 [pid 5321] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5321] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5321] close(3) = 0 [pid 5321] mkdir("./file0", 0777) = 0 [pid 5321] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5321] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5321] chdir("./file0") = 0 [pid 5321] ioctl(4, LOOP_CLR_FD) = 0 [pid 5321] close(4) = 0 [pid 5321] exit_group(0) = ? [pid 5321] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5321, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [ 49.398941][ T5319] loop0: detected capacity change from 0 to 512 [ 49.406634][ T5319] EXT4-fs: Ignoring removed oldalloc option [ 49.413065][ T5319] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 49.422892][ T5319] EXT4-fs (loop0): orphan cleanup on readonly fs [ 49.430835][ T5319] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./119/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./119/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./119/binderfs") = 0 umount2("./119/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./119/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./119/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./119/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./119/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./119/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5323 ./strace-static-x86_64: Process 5323 attached [pid 5323] chdir("./120") = 0 [pid 5323] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5323] setpgid(0, 0) = 0 [pid 5323] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5323] write(3, "1000", 4) = 4 [pid 5323] close(3) = 0 [pid 5323] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5323] memfd_create("syzkaller", 0) = 3 [pid 5323] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5323] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5323] munmap(0x7f9b27b53000, 262144) = 0 [pid 5323] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5323] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5323] close(3) = 0 [pid 5323] mkdir("./file0", 0777) = 0 [pid 5323] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5323] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5323] chdir("./file0") = 0 [pid 5323] ioctl(4, LOOP_CLR_FD) = 0 [pid 5323] close(4) = 0 [pid 5323] exit_group(0) = ? [pid 5323] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5323, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./120", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./120", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 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 [ 49.473170][ T5321] loop0: detected capacity change from 0 to 512 [ 49.480851][ T5321] EXT4-fs: Ignoring removed oldalloc option [ 49.487556][ T5321] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 49.497397][ T5321] EXT4-fs (loop0): orphan cleanup on readonly fs [ 49.505217][ T5321] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./120/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./120") = 0 mkdir("./121", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5325 ./strace-static-x86_64: Process 5325 attached [pid 5325] chdir("./121") = 0 [pid 5325] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5325] setpgid(0, 0) = 0 [pid 5325] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5325] write(3, "1000", 4) = 4 [pid 5325] close(3) = 0 [pid 5325] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5325] memfd_create("syzkaller", 0) = 3 [pid 5325] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5325] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5325] munmap(0x7f9b27b53000, 262144) = 0 [pid 5325] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5325] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5325] close(3) = 0 [pid 5325] mkdir("./file0", 0777) = 0 [ 49.538317][ T5323] loop0: detected capacity change from 0 to 512 [ 49.545968][ T5323] EXT4-fs: Ignoring removed oldalloc option [ 49.552577][ T5323] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 49.561921][ T5323] EXT4-fs (loop0): orphan cleanup on readonly fs [ 49.569999][ T5323] EXT4-fs (loop0): 1 truncate cleaned up [pid 5325] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5325] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5325] chdir("./file0") = 0 [pid 5325] ioctl(4, LOOP_CLR_FD) = 0 [pid 5325] close(4) = 0 [pid 5325] exit_group(0) = ? [pid 5325] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5325, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./121", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./121", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./121/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./121/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./121/binderfs") = 0 umount2("./121/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./121/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./121/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./121/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./121/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./121/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5327 ./strace-static-x86_64: Process 5327 attached [pid 5327] chdir("./122") = 0 [pid 5327] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5327] setpgid(0, 0) = 0 [pid 5327] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5327] write(3, "1000", 4) = 4 [pid 5327] close(3) = 0 [pid 5327] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5327] memfd_create("syzkaller", 0) = 3 [pid 5327] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5327] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5327] munmap(0x7f9b27b53000, 262144) = 0 [pid 5327] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5327] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5327] close(3) = 0 [pid 5327] mkdir("./file0", 0777) = 0 [pid 5327] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5327] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5327] chdir("./file0") = 0 [pid 5327] ioctl(4, LOOP_CLR_FD) = 0 [ 49.592386][ T5325] loop0: detected capacity change from 0 to 512 [ 49.593712][ T5082] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 49.599532][ T5325] EXT4-fs: Ignoring removed oldalloc option [ 49.614834][ T5325] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 49.624223][ T5325] EXT4-fs (loop0): orphan cleanup on readonly fs [ 49.632335][ T5325] EXT4-fs (loop0): 1 truncate cleaned up [pid 5327] close(4) = 0 [pid 5327] exit_group(0) = ? [pid 5327] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5327, 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, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./122/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./122/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./122/binderfs") = 0 umount2("./122/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./122/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./122/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./122/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./122/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./122/file0") = 0 getdents64(3, 0x55555591a620 /* 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./strace-static-x86_64: Process 5329 attached [pid 5329] chdir("./123" [pid 5080] <... clone resumed>, child_tidptr=0x5555559195d0) = 5329 [pid 5329] <... chdir resumed>) = 0 [pid 5329] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5329] setpgid(0, 0) = 0 [pid 5329] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5329] write(3, "1000", 4) = 4 [pid 5329] close(3) = 0 [pid 5329] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5329] memfd_create("syzkaller", 0) = 3 [pid 5329] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5329] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5329] munmap(0x7f9b27b53000, 262144) = 0 [pid 5329] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5329] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5329] close(3) = 0 [pid 5329] mkdir("./file0", 0777) = 0 [pid 5329] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5329] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5329] chdir("./file0") = 0 [pid 5329] ioctl(4, LOOP_CLR_FD) = 0 [ 49.671138][ T5327] loop0: detected capacity change from 0 to 512 [ 49.678811][ T5327] EXT4-fs: Ignoring removed oldalloc option [ 49.685176][ T5327] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 49.694776][ T5327] EXT4-fs (loop0): orphan cleanup on readonly fs [ 49.702596][ T5327] EXT4-fs (loop0): 1 truncate cleaned up [pid 5329] close(4) = 0 [pid 5329] exit_group(0) = ? [pid 5329] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5329, 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, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./123/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./123") = 0 mkdir("./124", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5331 attached , child_tidptr=0x5555559195d0) = 5331 [pid 5331] chdir("./124") = 0 [pid 5331] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5331] setpgid(0, 0) = 0 [pid 5331] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5331] write(3, "1000", 4) = 4 [pid 5331] close(3) = 0 [pid 5331] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5331] memfd_create("syzkaller", 0) = 3 [pid 5331] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5331] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5331] munmap(0x7f9b27b53000, 262144) = 0 [pid 5331] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5331] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5331] close(3) = 0 [pid 5331] mkdir("./file0", 0777) = 0 [pid 5331] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5331] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5331] chdir("./file0") = 0 [pid 5331] ioctl(4, LOOP_CLR_FD) = 0 [pid 5331] close(4) = 0 [pid 5331] exit_group(0) = ? [pid 5331] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5331, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [ 49.740577][ T5329] loop0: detected capacity change from 0 to 512 [ 49.748579][ T5329] EXT4-fs: Ignoring removed oldalloc option [ 49.755007][ T5329] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 49.764482][ T5329] EXT4-fs (loop0): orphan cleanup on readonly fs [ 49.772240][ T5329] EXT4-fs (loop0): 1 truncate cleaned up restart_syscall(<... resuming interrupted clone ...>) = 0 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, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./124/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./124") = 0 mkdir("./125", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5333 ./strace-static-x86_64: Process 5333 attached [pid 5333] chdir("./125") = 0 [pid 5333] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5333] setpgid(0, 0) = 0 [pid 5333] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5333] write(3, "1000", 4) = 4 [pid 5333] close(3) = 0 [pid 5333] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5333] memfd_create("syzkaller", 0) = 3 [pid 5333] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5333] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5333] munmap(0x7f9b27b53000, 262144) = 0 [pid 5333] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5333] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5333] close(3) = 0 [pid 5333] mkdir("./file0", 0777) = 0 [pid 5333] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5333] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5333] chdir("./file0") = 0 [pid 5333] ioctl(4, LOOP_CLR_FD) = 0 [pid 5333] close(4) = 0 [ 49.804474][ T5331] loop0: detected capacity change from 0 to 512 [ 49.812140][ T5331] EXT4-fs: Ignoring removed oldalloc option [ 49.818558][ T5331] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 49.827951][ T5331] EXT4-fs (loop0): orphan cleanup on readonly fs [ 49.835631][ T5331] EXT4-fs (loop0): 1 truncate cleaned up [pid 5333] exit_group(0) = ? [pid 5333] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5333, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./125/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./125/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./125/binderfs") = 0 umount2("./125/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./125/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./125/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./125/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./125/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./125/file0") = 0 getdents64(3, 0x55555591a620 /* 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./strace-static-x86_64: Process 5335 attached [pid 5335] chdir("./126") = 0 [pid 5335] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5335] setpgid(0, 0) = 0 [pid 5335] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5335] write(3, "1000", 4) = 4 [pid 5335] close(3) = 0 [pid 5335] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5335] memfd_create("syzkaller", 0) = 3 [pid 5335] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5335] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 5080] <... clone resumed>, child_tidptr=0x5555559195d0) = 5335 [pid 5335] <... write resumed>) = 262144 [pid 5335] munmap(0x7f9b27b53000, 262144) = 0 [pid 5335] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5335] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5335] close(3) = 0 [pid 5335] mkdir("./file0", 0777) = 0 [pid 5335] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5335] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5335] chdir("./file0") = 0 [pid 5335] ioctl(4, LOOP_CLR_FD) = 0 [pid 5335] close(4) = 0 [pid 5335] exit_group(0) = ? [pid 5335] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5335, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./126", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./126", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 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 [ 49.872499][ T5333] loop0: detected capacity change from 0 to 512 [ 49.879671][ T5333] EXT4-fs: Ignoring removed oldalloc option [ 49.886077][ T5333] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 49.895508][ T5333] EXT4-fs (loop0): orphan cleanup on readonly fs [ 49.903193][ T5333] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./126/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5337 ./strace-static-x86_64: Process 5337 attached [pid 5337] chdir("./127") = 0 [pid 5337] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5337] setpgid(0, 0) = 0 [pid 5337] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5337] write(3, "1000", 4) = 4 [pid 5337] close(3) = 0 [pid 5337] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5337] memfd_create("syzkaller", 0) = 3 [pid 5337] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5337] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5337] munmap(0x7f9b27b53000, 262144) = 0 [pid 5337] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5337] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5337] close(3) = 0 [pid 5337] mkdir("./file0", 0777) = 0 [pid 5337] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5337] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5337] chdir("./file0") = 0 [pid 5337] ioctl(4, LOOP_CLR_FD) = 0 [pid 5337] close(4) = 0 [ 49.937044][ T5335] loop0: detected capacity change from 0 to 512 [ 49.944411][ T5335] EXT4-fs: Ignoring removed oldalloc option [ 49.950948][ T5335] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 49.960387][ T5335] EXT4-fs (loop0): orphan cleanup on readonly fs [ 49.968244][ T5335] EXT4-fs (loop0): 1 truncate cleaned up [pid 5337] exit_group(0) = ? [pid 5337] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5337, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./127", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./127", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./127/file0") = 0 getdents64(3, 0x55555591a620 /* 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./strace-static-x86_64: Process 5339 attached , child_tidptr=0x5555559195d0) = 5339 [pid 5339] chdir("./128") = 0 [pid 5339] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5339] setpgid(0, 0) = 0 [pid 5339] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5339] write(3, "1000", 4) = 4 [pid 5339] close(3) = 0 [pid 5339] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5339] memfd_create("syzkaller", 0) = 3 [pid 5339] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5339] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5339] munmap(0x7f9b27b53000, 262144) = 0 [pid 5339] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5339] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5339] close(3) = 0 [pid 5339] mkdir("./file0", 0777) = 0 [pid 5339] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5339] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5339] chdir("./file0") = 0 [pid 5339] ioctl(4, LOOP_CLR_FD) = 0 [pid 5339] close(4) = 0 [pid 5339] exit_group(0) = ? [pid 5339] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5339, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- 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, 0x55555591a620 /* 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 [ 49.997621][ T5337] loop0: detected capacity change from 0 to 512 [ 50.004747][ T5337] EXT4-fs: Ignoring removed oldalloc option [ 50.011481][ T5337] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 50.021094][ T5337] EXT4-fs (loop0): orphan cleanup on readonly fs [ 50.028783][ T5337] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./128/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5341 ./strace-static-x86_64: Process 5341 attached [pid 5341] chdir("./129") = 0 [pid 5341] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5341] setpgid(0, 0) = 0 [pid 5341] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5341] write(3, "1000", 4) = 4 [pid 5341] close(3) = 0 [pid 5341] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5341] memfd_create("syzkaller", 0) = 3 [pid 5341] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5341] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5341] munmap(0x7f9b27b53000, 262144) = 0 [pid 5341] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5341] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5341] close(3) = 0 [pid 5341] mkdir("./file0", 0777) = 0 [pid 5341] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5341] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5341] chdir("./file0") = 0 [pid 5341] ioctl(4, LOOP_CLR_FD) = 0 [pid 5341] close(4) = 0 [pid 5341] exit_group(0) = ? [pid 5341] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5341, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./129", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./129", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 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 [ 50.063559][ T5339] loop0: detected capacity change from 0 to 512 [ 50.071226][ T5339] EXT4-fs: Ignoring removed oldalloc option [ 50.077601][ T5339] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 50.087453][ T5339] EXT4-fs (loop0): orphan cleanup on readonly fs [ 50.095205][ T5339] EXT4-fs (loop0): 1 truncate cleaned up umount2("./129/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./129/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./129/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./129/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./129/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./129/file0") = 0 getdents64(3, 0x55555591a620 /* 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./strace-static-x86_64: Process 5343 attached , child_tidptr=0x5555559195d0) = 5343 [pid 5343] chdir("./130") = 0 [pid 5343] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5343] setpgid(0, 0) = 0 [pid 5343] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5343] write(3, "1000", 4) = 4 [pid 5343] close(3) = 0 [pid 5343] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5343] memfd_create("syzkaller", 0) = 3 [pid 5343] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5343] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5343] munmap(0x7f9b27b53000, 262144) = 0 [pid 5343] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5343] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5343] close(3) = 0 [pid 5343] mkdir("./file0", 0777) = 0 [pid 5343] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5343] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5343] chdir("./file0") = 0 [pid 5343] ioctl(4, LOOP_CLR_FD) = 0 [pid 5343] close(4) = 0 [pid 5343] exit_group(0) = ? [ 50.129681][ T5341] loop0: detected capacity change from 0 to 512 [ 50.137361][ T5341] EXT4-fs: Ignoring removed oldalloc option [ 50.143762][ T5341] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 50.153063][ T5341] EXT4-fs (loop0): orphan cleanup on readonly fs [ 50.160931][ T5341] EXT4-fs (loop0): 1 truncate cleaned up [pid 5343] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5343, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./130/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5345 ./strace-static-x86_64: Process 5345 attached [pid 5345] chdir("./131") = 0 [pid 5345] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5345] setpgid(0, 0) = 0 [pid 5345] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5345] write(3, "1000", 4) = 4 [pid 5345] close(3) = 0 [pid 5345] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5345] memfd_create("syzkaller", 0) = 3 [pid 5345] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5345] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5345] munmap(0x7f9b27b53000, 262144) = 0 [pid 5345] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5345] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5345] close(3) = 0 [pid 5345] mkdir("./file0", 0777) = 0 [pid 5345] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5345] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5345] chdir("./file0") = 0 [pid 5345] ioctl(4, LOOP_CLR_FD) = 0 [pid 5345] close(4) = 0 [pid 5345] exit_group(0) = ? [pid 5345] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5345, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 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, 0x55555591a620 /* 4 entries */, 32768) = 112 [ 50.193916][ T5343] loop0: detected capacity change from 0 to 512 [ 50.201177][ T5343] EXT4-fs: Ignoring removed oldalloc option [ 50.207597][ T5343] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 50.217131][ T5343] EXT4-fs (loop0): orphan cleanup on readonly fs [ 50.224986][ T5343] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./131/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5347 ./strace-static-x86_64: Process 5347 attached [pid 5347] chdir("./132") = 0 [pid 5347] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5347] setpgid(0, 0) = 0 [pid 5347] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5347] write(3, "1000", 4) = 4 [pid 5347] close(3) = 0 [pid 5347] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5347] memfd_create("syzkaller", 0) = 3 [pid 5347] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5347] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5347] munmap(0x7f9b27b53000, 262144) = 0 [pid 5347] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5347] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5347] close(3) = 0 [pid 5347] mkdir("./file0", 0777) = 0 [pid 5347] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5347] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5347] chdir("./file0") = 0 [pid 5347] ioctl(4, LOOP_CLR_FD) = 0 [pid 5347] close(4) = 0 [pid 5347] exit_group(0) = ? [pid 5347] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5347, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [ 50.266100][ T5345] loop0: detected capacity change from 0 to 512 [ 50.273595][ T5345] EXT4-fs: Ignoring removed oldalloc option [ 50.280193][ T5345] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 50.289416][ T5345] EXT4-fs (loop0): orphan cleanup on readonly fs [ 50.297144][ T5345] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./132/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./132/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./132/binderfs") = 0 umount2("./132/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./132/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./132/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./132/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./132/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./132/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5349 ./strace-static-x86_64: Process 5349 attached [pid 5349] chdir("./133") = 0 [pid 5349] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5349] setpgid(0, 0) = 0 [pid 5349] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5349] write(3, "1000", 4) = 4 [pid 5349] close(3) = 0 [pid 5349] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5349] memfd_create("syzkaller", 0) = 3 [pid 5349] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5349] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5349] munmap(0x7f9b27b53000, 262144) = 0 [pid 5349] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5349] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5349] close(3) = 0 [pid 5349] mkdir("./file0", 0777) = 0 [pid 5349] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5349] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5349] chdir("./file0") = 0 [pid 5349] ioctl(4, LOOP_CLR_FD) = 0 [pid 5349] close(4) = 0 [ 50.324833][ T5347] loop0: detected capacity change from 0 to 512 [ 50.332210][ T5347] EXT4-fs: Ignoring removed oldalloc option [ 50.338849][ T5347] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 50.348528][ T5347] EXT4-fs (loop0): orphan cleanup on readonly fs [ 50.356310][ T5347] EXT4-fs (loop0): 1 truncate cleaned up [pid 5349] exit_group(0) = ? [pid 5349] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5349, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 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, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./133/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5351 ./strace-static-x86_64: Process 5351 attached [pid 5351] chdir("./134") = 0 [pid 5351] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5351] setpgid(0, 0) = 0 [pid 5351] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5351] write(3, "1000", 4) = 4 [pid 5351] close(3) = 0 [pid 5351] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5351] memfd_create("syzkaller", 0) = 3 [pid 5351] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5351] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5351] munmap(0x7f9b27b53000, 262144) = 0 [pid 5351] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5351] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5351] close(3) = 0 [pid 5351] mkdir("./file0", 0777) = 0 [pid 5351] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5351] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5351] chdir("./file0") = 0 [pid 5351] ioctl(4, LOOP_CLR_FD) = 0 [ 50.390487][ T5349] loop0: detected capacity change from 0 to 512 [ 50.397947][ T5349] EXT4-fs: Ignoring removed oldalloc option [ 50.404374][ T5349] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 50.413973][ T5349] EXT4-fs (loop0): orphan cleanup on readonly fs [ 50.421621][ T5349] EXT4-fs (loop0): 1 truncate cleaned up [pid 5351] close(4) = 0 [pid 5351] exit_group(0) = ? [pid 5351] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5351, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./134/file0") = 0 getdents64(3, 0x55555591a620 /* 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./strace-static-x86_64: Process 5353 attached , child_tidptr=0x5555559195d0) = 5353 [pid 5353] chdir("./135") = 0 [pid 5353] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5353] setpgid(0, 0) = 0 [pid 5353] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5353] write(3, "1000", 4) = 4 [pid 5353] close(3) = 0 [pid 5353] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5353] memfd_create("syzkaller", 0) = 3 [pid 5353] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5353] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5353] munmap(0x7f9b27b53000, 262144) = 0 [pid 5353] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5353] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5353] close(3) = 0 [pid 5353] mkdir("./file0", 0777) = 0 [pid 5353] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5353] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5353] chdir("./file0") = 0 [pid 5353] ioctl(4, LOOP_CLR_FD) = 0 [pid 5353] close(4) = 0 [pid 5353] exit_group(0) = ? [pid 5353] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5353, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./135", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./135", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 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 [ 50.449883][ T5351] loop0: detected capacity change from 0 to 512 [ 50.457509][ T5351] EXT4-fs: Ignoring removed oldalloc option [ 50.463881][ T5351] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 50.473472][ T5351] EXT4-fs (loop0): orphan cleanup on readonly fs [ 50.481234][ T5351] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./135/file0") = 0 getdents64(3, 0x55555591a620 /* 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./strace-static-x86_64: Process 5355 attached [pid 5355] chdir("./136") = 0 [pid 5355] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5355] setpgid(0, 0) = 0 [pid 5355] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5080] <... clone resumed>, child_tidptr=0x5555559195d0) = 5355 [pid 5355] <... openat resumed>) = 3 [pid 5355] write(3, "1000", 4) = 4 [pid 5355] close(3) = 0 [pid 5355] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5355] memfd_create("syzkaller", 0) = 3 [pid 5355] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5355] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5355] munmap(0x7f9b27b53000, 262144) = 0 [pid 5355] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5355] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5355] close(3) = 0 [pid 5355] mkdir("./file0", 0777) = 0 [pid 5355] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5355] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5355] chdir("./file0") = 0 [pid 5355] ioctl(4, LOOP_CLR_FD) = 0 [pid 5355] close(4) = 0 [pid 5355] exit_group(0) = ? [ 50.517304][ T5353] loop0: detected capacity change from 0 to 512 [ 50.524840][ T5353] EXT4-fs: Ignoring removed oldalloc option [ 50.531468][ T5353] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 50.541100][ T5353] EXT4-fs (loop0): orphan cleanup on readonly fs [ 50.548936][ T5353] EXT4-fs (loop0): 1 truncate cleaned up [pid 5355] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5355, si_uid=0, si_status=0, si_utime=0, si_stime=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 getdents64(3, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./136/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5357 ./strace-static-x86_64: Process 5357 attached [pid 5357] chdir("./137") = 0 [pid 5357] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5357] setpgid(0, 0) = 0 [pid 5357] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5357] write(3, "1000", 4) = 4 [pid 5357] close(3) = 0 [pid 5357] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5357] memfd_create("syzkaller", 0) = 3 [pid 5357] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5357] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5357] munmap(0x7f9b27b53000, 262144) = 0 [pid 5357] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5357] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5357] close(3) = 0 [pid 5357] mkdir("./file0", 0777) = 0 [pid 5357] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5357] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5357] chdir("./file0") = 0 [pid 5357] ioctl(4, LOOP_CLR_FD) = 0 [ 50.582110][ T5355] loop0: detected capacity change from 0 to 512 [ 50.589709][ T5355] EXT4-fs: Ignoring removed oldalloc option [ 50.596099][ T5355] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 50.605578][ T5355] EXT4-fs (loop0): orphan cleanup on readonly fs [ 50.613337][ T5355] EXT4-fs (loop0): 1 truncate cleaned up [pid 5357] close(4) = 0 [pid 5357] exit_group(0) = ? [pid 5357] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5357, si_uid=0, si_status=0, si_utime=0, si_stime=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, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./137/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./137/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./137/binderfs") = 0 umount2("./137/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./137/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./137/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./137/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./137/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./137/file0") = 0 getdents64(3, 0x55555591a620 /* 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./strace-static-x86_64: Process 5359 attached [pid 5359] chdir("./138") = 0 [pid 5359] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5359] setpgid(0, 0) = 0 [pid 5359] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5359] write(3, "1000", 4) = 4 [pid 5359] close(3) = 0 [pid 5359] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5359] memfd_create("syzkaller", 0) = 3 [pid 5359] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5080] <... clone resumed>, child_tidptr=0x5555559195d0) = 5359 [pid 5359] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5359] munmap(0x7f9b27b53000, 262144) = 0 [pid 5359] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5359] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5359] close(3) = 0 [pid 5359] mkdir("./file0", 0777) = 0 [pid 5359] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5359] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5359] chdir("./file0") = 0 [pid 5359] ioctl(4, LOOP_CLR_FD) = 0 [pid 5359] close(4) = 0 [pid 5359] exit_group(0) = ? [pid 5359] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5359, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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, 0x55555591a620 /* 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 [ 50.640727][ T5357] loop0: detected capacity change from 0 to 512 [ 50.648537][ T5357] EXT4-fs: Ignoring removed oldalloc option [ 50.654859][ T5357] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 50.664294][ T5357] EXT4-fs (loop0): orphan cleanup on readonly fs [ 50.672257][ T5357] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./138/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./138") = 0 mkdir("./139", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5361 attached [pid 5361] chdir("./139") = 0 [pid 5361] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5361] setpgid(0, 0) = 0 [pid 5361] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5361] write(3, "1000", 4) = 4 [pid 5361] close(3) = 0 [pid 5361] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5361] memfd_create("syzkaller", 0) = 3 [pid 5361] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5080] <... clone resumed>, child_tidptr=0x5555559195d0) = 5361 [pid 5361] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5361] munmap(0x7f9b27b53000, 262144) = 0 [pid 5361] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5361] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5361] close(3) = 0 [pid 5361] mkdir("./file0", 0777) = 0 [ 50.710722][ T5359] loop0: detected capacity change from 0 to 512 [ 50.718444][ T5359] EXT4-fs: Ignoring removed oldalloc option [ 50.724761][ T5359] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 50.734453][ T5359] EXT4-fs (loop0): orphan cleanup on readonly fs [ 50.742478][ T5359] EXT4-fs (loop0): 1 truncate cleaned up [pid 5361] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5361] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5361] chdir("./file0") = 0 [pid 5361] ioctl(4, LOOP_CLR_FD) = 0 [pid 5361] close(4) = 0 [pid 5361] exit_group(0) = ? [pid 5361] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5361, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 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, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./139/file0") = 0 getdents64(3, 0x55555591a620 /* 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) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5363 ./strace-static-x86_64: Process 5363 attached [pid 5363] chdir("./140") = 0 [pid 5363] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5363] setpgid(0, 0) = 0 [pid 5363] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5363] write(3, "1000", 4) = 4 [pid 5363] close(3) = 0 [pid 5363] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5363] memfd_create("syzkaller", 0) = 3 [pid 5363] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5363] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5363] munmap(0x7f9b27b53000, 262144) = 0 [pid 5363] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5363] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5363] close(3) = 0 [pid 5363] mkdir("./file0", 0777) = 0 [ 50.768725][ T5361] loop0: detected capacity change from 0 to 512 [ 50.769184][ T5082] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 50.775689][ T5361] EXT4-fs: Ignoring removed oldalloc option [ 50.791275][ T5361] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 50.800885][ T5361] EXT4-fs (loop0): orphan cleanup on readonly fs [ 50.808833][ T5361] EXT4-fs (loop0): 1 truncate cleaned up [pid 5363] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5363] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5363] chdir("./file0") = 0 [pid 5363] ioctl(4, LOOP_CLR_FD) = 0 [pid 5363] close(4) = 0 [pid 5363] exit_group(0) = ? [pid 5363] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5363, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- umount2("./140", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./140", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./140/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./140/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./140/binderfs") = 0 umount2("./140/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./140/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./140/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./140/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./140/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./140/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5365 ./strace-static-x86_64: Process 5365 attached [pid 5365] chdir("./141") = 0 [pid 5365] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5365] setpgid(0, 0) = 0 [pid 5365] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5365] write(3, "1000", 4) = 4 [pid 5365] close(3) = 0 [pid 5365] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5365] memfd_create("syzkaller", 0) = 3 [pid 5365] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5365] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5365] munmap(0x7f9b27b53000, 262144) = 0 [pid 5365] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5365] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5365] close(3) = 0 [pid 5365] mkdir("./file0", 0777) = 0 [pid 5365] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5365] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5365] chdir("./file0") = 0 [pid 5365] ioctl(4, LOOP_CLR_FD) = 0 [pid 5365] close(4) = 0 [ 50.832846][ T5363] loop0: detected capacity change from 0 to 512 [ 50.835618][ T5082] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 50.840654][ T5363] EXT4-fs: Ignoring removed oldalloc option [ 50.855617][ T5363] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 50.865118][ T5363] EXT4-fs (loop0): orphan cleanup on readonly fs [ 50.873024][ T5363] EXT4-fs (loop0): 1 truncate cleaned up [pid 5365] exit_group(0) = ? [pid 5365] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5365, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 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 getdents64(3, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./141/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5367 ./strace-static-x86_64: Process 5367 attached [pid 5367] chdir("./142") = 0 [pid 5367] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5367] setpgid(0, 0) = 0 [pid 5367] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5367] write(3, "1000", 4) = 4 [pid 5367] close(3) = 0 [pid 5367] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5367] memfd_create("syzkaller", 0) = 3 [pid 5367] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5367] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5367] munmap(0x7f9b27b53000, 262144) = 0 [pid 5367] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5367] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5367] close(3) = 0 [pid 5367] mkdir("./file0", 0777) = 0 [pid 5367] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5367] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5367] chdir("./file0") = 0 [pid 5367] ioctl(4, LOOP_CLR_FD) = 0 [pid 5367] close(4) = 0 [ 50.901808][ T5365] loop0: detected capacity change from 0 to 512 [ 50.909175][ T5365] EXT4-fs: Ignoring removed oldalloc option [ 50.915578][ T5365] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 50.925152][ T5365] EXT4-fs (loop0): orphan cleanup on readonly fs [ 50.932838][ T5365] EXT4-fs (loop0): 1 truncate cleaned up [pid 5367] exit_group(0) = ? [pid 5367] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5367, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./142", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./142", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./142/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5369 ./strace-static-x86_64: Process 5369 attached [pid 5369] chdir("./143") = 0 [pid 5369] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5369] setpgid(0, 0) = 0 [pid 5369] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5369] write(3, "1000", 4) = 4 [pid 5369] close(3) = 0 [pid 5369] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5369] memfd_create("syzkaller", 0) = 3 [pid 5369] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5369] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5369] munmap(0x7f9b27b53000, 262144) = 0 [pid 5369] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5369] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5369] close(3) = 0 [pid 5369] mkdir("./file0", 0777) = 0 [pid 5369] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5369] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5369] chdir("./file0") = 0 [pid 5369] ioctl(4, LOOP_CLR_FD) = 0 [pid 5369] close(4) = 0 [pid 5369] exit_group(0) = ? [pid 5369] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5369, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- 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, 0x55555591a620 /* 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 [ 50.961116][ T5367] loop0: detected capacity change from 0 to 512 [ 50.968796][ T5367] EXT4-fs: Ignoring removed oldalloc option [ 50.975235][ T5367] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 50.984871][ T5367] EXT4-fs (loop0): orphan cleanup on readonly fs [ 50.992740][ T5367] EXT4-fs (loop0): 1 truncate cleaned up unlink("./143/binderfs") = 0 umount2("./143/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./143/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./143/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./143/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./143/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./143/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5371 ./strace-static-x86_64: Process 5371 attached [pid 5371] chdir("./144") = 0 [pid 5371] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5371] setpgid(0, 0) = 0 [pid 5371] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5371] write(3, "1000", 4) = 4 [pid 5371] close(3) = 0 [pid 5371] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5371] memfd_create("syzkaller", 0) = 3 [pid 5371] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5371] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5371] munmap(0x7f9b27b53000, 262144) = 0 [pid 5371] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5371] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5371] close(3) = 0 [pid 5371] mkdir("./file0", 0777) = 0 [pid 5371] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5371] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5371] chdir("./file0") = 0 [pid 5371] ioctl(4, LOOP_CLR_FD) = 0 [pid 5371] close(4) = 0 [ 51.030958][ T5369] loop0: detected capacity change from 0 to 512 [ 51.038486][ T5369] EXT4-fs: Ignoring removed oldalloc option [ 51.044809][ T5369] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 51.054588][ T5369] EXT4-fs (loop0): orphan cleanup on readonly fs [ 51.062653][ T5369] EXT4-fs (loop0): 1 truncate cleaned up [pid 5371] exit_group(0) = ? [pid 5371] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5371, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./144/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./144/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./144/binderfs") = 0 umount2("./144/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./144/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./144/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./144/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./144/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./144/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5373 ./strace-static-x86_64: Process 5373 attached [pid 5373] chdir("./145") = 0 [pid 5373] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5373] setpgid(0, 0) = 0 [pid 5373] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5373] write(3, "1000", 4) = 4 [pid 5373] close(3) = 0 [pid 5373] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5373] memfd_create("syzkaller", 0) = 3 [pid 5373] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5373] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5373] munmap(0x7f9b27b53000, 262144) = 0 [pid 5373] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5373] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5373] close(3) = 0 [pid 5373] mkdir("./file0", 0777) = 0 [pid 5373] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5373] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5373] chdir("./file0") = 0 [pid 5373] ioctl(4, LOOP_CLR_FD) = 0 [pid 5373] close(4) = 0 [pid 5373] exit_group(0) = ? [pid 5373] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5373, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- 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, 0x55555591a620 /* 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 [ 51.089853][ T5371] loop0: detected capacity change from 0 to 512 [ 51.097521][ T5371] EXT4-fs: Ignoring removed oldalloc option [ 51.103923][ T5371] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 51.113423][ T5371] EXT4-fs (loop0): orphan cleanup on readonly fs [ 51.121398][ T5371] 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./145/file0") = 0 getdents64(3, 0x55555591a620 /* 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./strace-static-x86_64: Process 5375 attached , child_tidptr=0x5555559195d0) = 5375 [pid 5375] chdir("./146") = 0 [pid 5375] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5375] setpgid(0, 0) = 0 [pid 5375] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5375] write(3, "1000", 4) = 4 [pid 5375] close(3) = 0 [pid 5375] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5375] memfd_create("syzkaller", 0) = 3 [pid 5375] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5375] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5375] munmap(0x7f9b27b53000, 262144) = 0 [pid 5375] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5375] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5375] close(3) = 0 [pid 5375] mkdir("./file0", 0777) = 0 [pid 5375] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5375] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5375] chdir("./file0") = 0 [pid 5375] ioctl(4, LOOP_CLR_FD) = 0 [pid 5375] close(4) = 0 [ 51.159991][ T5373] loop0: detected capacity change from 0 to 512 [ 51.168571][ T5373] EXT4-fs: Ignoring removed oldalloc option [ 51.174964][ T5373] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 51.184673][ T5373] EXT4-fs (loop0): orphan cleanup on readonly fs [ 51.192657][ T5373] EXT4-fs (loop0): 1 truncate cleaned up [pid 5375] exit_group(0) = ? [pid 5375] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5375, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./146", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./146", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./146/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./146/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./146/binderfs") = 0 umount2("./146/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./146/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./146/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./146/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./146/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./146/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./146") = 0 mkdir("./147", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5377 attached , child_tidptr=0x5555559195d0) = 5377 [pid 5377] chdir("./147") = 0 [pid 5377] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5377] setpgid(0, 0) = 0 [pid 5377] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5377] write(3, "1000", 4) = 4 [pid 5377] close(3) = 0 [pid 5377] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5377] memfd_create("syzkaller", 0) = 3 [pid 5377] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5377] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5377] munmap(0x7f9b27b53000, 262144) = 0 [pid 5377] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5377] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5377] close(3) = 0 [pid 5377] mkdir("./file0", 0777) = 0 [pid 5377] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5377] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5377] chdir("./file0") = 0 [pid 5377] ioctl(4, LOOP_CLR_FD) = 0 [ 51.225610][ T5375] loop0: detected capacity change from 0 to 512 [ 51.232901][ T5375] EXT4-fs: Ignoring removed oldalloc option [ 51.239668][ T5375] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 51.249545][ T5375] EXT4-fs (loop0): orphan cleanup on readonly fs [ 51.257456][ T5375] EXT4-fs (loop0): 1 truncate cleaned up [pid 5377] close(4) = 0 [pid 5377] exit_group(0) = ? [pid 5377] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5377, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 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 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./147/file0") = 0 getdents64(3, 0x55555591a620 /* 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, child_tidptr=0x5555559195d0) = 5379 ./strace-static-x86_64: Process 5379 attached [pid 5379] chdir("./148") = 0 [pid 5379] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5379] setpgid(0, 0) = 0 [pid 5379] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5379] write(3, "1000", 4) = 4 [pid 5379] close(3) = 0 [pid 5379] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5379] memfd_create("syzkaller", 0) = 3 [pid 5379] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5379] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5379] munmap(0x7f9b27b53000, 262144) = 0 [pid 5379] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5379] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5379] close(3) = 0 [pid 5379] mkdir("./file0", 0777) = 0 [pid 5379] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5379] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5379] chdir("./file0") = 0 [pid 5379] ioctl(4, LOOP_CLR_FD) = 0 [ 51.298461][ T5377] loop0: detected capacity change from 0 to 512 [ 51.306058][ T5377] EXT4-fs: Ignoring removed oldalloc option [ 51.312553][ T5377] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 51.322234][ T5377] EXT4-fs (loop0): orphan cleanup on readonly fs [ 51.330551][ T5377] EXT4-fs (loop0): 1 truncate cleaned up [pid 5379] close(4) = 0 [pid 5379] exit_group(0) = ? [pid 5379] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5379, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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, 0x55555591a620 /* 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 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./148/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5381 ./strace-static-x86_64: Process 5381 attached [pid 5381] chdir("./149") = 0 [pid 5381] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5381] setpgid(0, 0) = 0 [pid 5381] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5381] write(3, "1000", 4) = 4 [pid 5381] close(3) = 0 [pid 5381] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5381] memfd_create("syzkaller", 0) = 3 [pid 5381] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5381] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5381] munmap(0x7f9b27b53000, 262144) = 0 [pid 5381] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5381] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5381] close(3) = 0 [pid 5381] mkdir("./file0", 0777) = 0 [pid 5381] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5381] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5381] chdir("./file0") = 0 [pid 5381] ioctl(4, LOOP_CLR_FD) = 0 [ 51.373434][ T5379] loop0: detected capacity change from 0 to 512 [ 51.381339][ T5379] EXT4-fs: Ignoring removed oldalloc option [ 51.387899][ T5379] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 51.397498][ T5379] EXT4-fs (loop0): orphan cleanup on readonly fs [ 51.405736][ T5379] EXT4-fs (loop0): 1 truncate cleaned up [pid 5381] close(4) = 0 [pid 5381] exit_group(0) = ? [pid 5381] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5381, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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, 0x55555591a620 /* 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 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./149/file0") = 0 getdents64(3, 0x55555591a620 /* 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./strace-static-x86_64: Process 5383 attached , child_tidptr=0x5555559195d0) = 5383 [pid 5383] chdir("./150") = 0 [pid 5383] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5383] setpgid(0, 0) = 0 [pid 5383] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5383] write(3, "1000", 4) = 4 [pid 5383] close(3) = 0 [pid 5383] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5383] memfd_create("syzkaller", 0) = 3 [pid 5383] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5383] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5383] munmap(0x7f9b27b53000, 262144) = 0 [pid 5383] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5383] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5383] close(3) = 0 [pid 5383] mkdir("./file0", 0777) = 0 [pid 5383] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5383] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5383] chdir("./file0") = 0 [pid 5383] ioctl(4, LOOP_CLR_FD) = 0 [pid 5383] close(4) = 0 [pid 5383] exit_group(0) = ? [pid 5383] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5383, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./150", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./150", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 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 [ 51.436667][ T5381] loop0: detected capacity change from 0 to 512 [ 51.444233][ T5381] EXT4-fs: Ignoring removed oldalloc option [ 51.451111][ T5381] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 51.460714][ T5381] EXT4-fs (loop0): orphan cleanup on readonly fs [ 51.468607][ T5381] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./150/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5385 ./strace-static-x86_64: Process 5385 attached [pid 5385] chdir("./151") = 0 [pid 5385] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5385] setpgid(0, 0) = 0 [pid 5385] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5385] write(3, "1000", 4) = 4 [pid 5385] close(3) = 0 [pid 5385] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5385] memfd_create("syzkaller", 0) = 3 [pid 5385] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5385] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5385] munmap(0x7f9b27b53000, 262144) = 0 [pid 5385] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5385] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5385] close(3) = 0 [pid 5385] mkdir("./file0", 0777) = 0 [pid 5385] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5385] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5385] chdir("./file0") = 0 [pid 5385] ioctl(4, LOOP_CLR_FD) = 0 [pid 5385] close(4) = 0 [pid 5385] exit_group(0) = ? [pid 5385] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5385, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 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 [ 51.508516][ T5383] loop0: detected capacity change from 0 to 512 [ 51.516155][ T5383] EXT4-fs: Ignoring removed oldalloc option [ 51.522636][ T5383] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 51.532273][ T5383] EXT4-fs (loop0): orphan cleanup on readonly fs [ 51.540264][ T5383] EXT4-fs (loop0): 1 truncate cleaned up getdents64(3, 0x55555591a620 /* 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 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./151/file0") = 0 getdents64(3, 0x55555591a620 /* 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./strace-static-x86_64: Process 5387 attached , child_tidptr=0x5555559195d0) = 5387 [pid 5387] chdir("./152") = 0 [pid 5387] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5387] setpgid(0, 0) = 0 [pid 5387] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5387] write(3, "1000", 4) = 4 [pid 5387] close(3) = 0 [pid 5387] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5387] memfd_create("syzkaller", 0) = 3 [pid 5387] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5387] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5387] munmap(0x7f9b27b53000, 262144) = 0 [pid 5387] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5387] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5387] close(3) = 0 [pid 5387] mkdir("./file0", 0777) = 0 [pid 5387] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5387] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5387] chdir("./file0") = 0 [pid 5387] ioctl(4, LOOP_CLR_FD) = 0 [ 51.569562][ T5385] loop0: detected capacity change from 0 to 512 [ 51.577287][ T5385] EXT4-fs: Ignoring removed oldalloc option [ 51.583648][ T5385] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 51.593165][ T5385] EXT4-fs (loop0): orphan cleanup on readonly fs [ 51.601182][ T5385] EXT4-fs (loop0): 1 truncate cleaned up [pid 5387] close(4) = 0 [pid 5387] exit_group(0) = ? [pid 5387] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5387, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- 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, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./152/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./152") = 0 mkdir("./153", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5389 attached , child_tidptr=0x5555559195d0) = 5389 [pid 5389] chdir("./153") = 0 [pid 5389] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5389] setpgid(0, 0) = 0 [pid 5389] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5389] write(3, "1000", 4) = 4 [pid 5389] close(3) = 0 [pid 5389] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5389] memfd_create("syzkaller", 0) = 3 [pid 5389] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5389] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5389] munmap(0x7f9b27b53000, 262144) = 0 [pid 5389] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5389] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5389] close(3) = 0 [pid 5389] mkdir("./file0", 0777) = 0 [pid 5389] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5389] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5389] chdir("./file0") = 0 [pid 5389] ioctl(4, LOOP_CLR_FD) = 0 [pid 5389] close(4) = 0 [pid 5389] exit_group(0) = ? [pid 5389] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5389, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- 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, 0x55555591a620 /* 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 [ 51.638953][ T5387] loop0: detected capacity change from 0 to 512 [ 51.646750][ T5387] EXT4-fs: Ignoring removed oldalloc option [ 51.653202][ T5387] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 51.662854][ T5387] EXT4-fs (loop0): orphan cleanup on readonly fs [ 51.670743][ T5387] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./153/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5391 ./strace-static-x86_64: Process 5391 attached [pid 5391] chdir("./154") = 0 [pid 5391] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5391] setpgid(0, 0) = 0 [pid 5391] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5391] write(3, "1000", 4) = 4 [pid 5391] close(3) = 0 [pid 5391] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5391] memfd_create("syzkaller", 0) = 3 [pid 5391] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5391] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5391] munmap(0x7f9b27b53000, 262144) = 0 [pid 5391] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5391] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5391] close(3) = 0 [pid 5391] mkdir("./file0", 0777) = 0 [pid 5391] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5391] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5391] chdir("./file0") = 0 [pid 5391] ioctl(4, LOOP_CLR_FD) = 0 [pid 5391] close(4) = 0 [pid 5391] exit_group(0) = ? [pid 5391] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5391, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [ 51.715219][ T5389] loop0: detected capacity change from 0 to 512 [ 51.723023][ T5389] EXT4-fs: Ignoring removed oldalloc option [ 51.729763][ T5389] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 51.739334][ T5389] EXT4-fs (loop0): orphan cleanup on readonly fs [ 51.747302][ T5389] EXT4-fs (loop0): 1 truncate cleaned up 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, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./154/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5393 ./strace-static-x86_64: Process 5393 attached [pid 5393] chdir("./155") = 0 [pid 5393] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5393] setpgid(0, 0) = 0 [pid 5393] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5393] write(3, "1000", 4) = 4 [pid 5393] close(3) = 0 [pid 5393] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5393] memfd_create("syzkaller", 0) = 3 [pid 5393] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5393] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5393] munmap(0x7f9b27b53000, 262144) = 0 [pid 5393] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5393] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5393] close(3) = 0 [pid 5393] mkdir("./file0", 0777) = 0 [pid 5393] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5393] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5393] chdir("./file0") = 0 [pid 5393] ioctl(4, LOOP_CLR_FD) = 0 [ 51.777660][ T5391] loop0: detected capacity change from 0 to 512 [ 51.785022][ T5391] EXT4-fs: Ignoring removed oldalloc option [ 51.791599][ T5391] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 51.801149][ T5391] EXT4-fs (loop0): orphan cleanup on readonly fs [ 51.808942][ T5391] EXT4-fs (loop0): 1 truncate cleaned up [pid 5393] close(4) = 0 [pid 5393] exit_group(0) = ? [pid 5393] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5393, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- 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, 0x55555591a620 /* 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 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./155/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5395 ./strace-static-x86_64: Process 5395 attached [pid 5395] chdir("./156") = 0 [pid 5395] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5395] setpgid(0, 0) = 0 [pid 5395] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5395] write(3, "1000", 4) = 4 [pid 5395] close(3) = 0 [pid 5395] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5395] memfd_create("syzkaller", 0) = 3 [pid 5395] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5395] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5395] munmap(0x7f9b27b53000, 262144) = 0 [pid 5395] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5395] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5395] close(3) = 0 [pid 5395] mkdir("./file0", 0777) = 0 [pid 5395] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5395] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5395] chdir("./file0") = 0 [ 51.841375][ T5393] loop0: detected capacity change from 0 to 512 [ 51.848853][ T5393] EXT4-fs: Ignoring removed oldalloc option [ 51.855217][ T5393] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 51.865026][ T5393] EXT4-fs (loop0): orphan cleanup on readonly fs [ 51.872938][ T5393] EXT4-fs (loop0): 1 truncate cleaned up [pid 5395] ioctl(4, LOOP_CLR_FD) = 0 [pid 5395] close(4) = 0 [pid 5395] exit_group(0) = ? [pid 5395] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5395, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- 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, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./156/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5397 ./strace-static-x86_64: Process 5397 attached [pid 5397] chdir("./157") = 0 [pid 5397] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5397] setpgid(0, 0) = 0 [pid 5397] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5397] write(3, "1000", 4) = 4 [pid 5397] close(3) = 0 [pid 5397] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5397] memfd_create("syzkaller", 0) = 3 [pid 5397] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5397] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5397] munmap(0x7f9b27b53000, 262144) = 0 [pid 5397] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5397] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5397] close(3) = 0 [pid 5397] mkdir("./file0", 0777) = 0 [pid 5397] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5397] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5397] chdir("./file0") = 0 [pid 5397] ioctl(4, LOOP_CLR_FD) = 0 [pid 5397] close(4) = 0 [ 51.910751][ T5395] loop0: detected capacity change from 0 to 512 [ 51.918546][ T5395] EXT4-fs: Ignoring removed oldalloc option [ 51.924828][ T5395] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 51.934563][ T5395] EXT4-fs (loop0): orphan cleanup on readonly fs [ 51.942510][ T5395] EXT4-fs (loop0): 1 truncate cleaned up [pid 5397] exit_group(0) = ? [pid 5397] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5397, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 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, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./157/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5399 ./strace-static-x86_64: Process 5399 attached [pid 5399] chdir("./158") = 0 [pid 5399] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5399] setpgid(0, 0) = 0 [pid 5399] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5399] write(3, "1000", 4) = 4 [pid 5399] close(3) = 0 [pid 5399] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5399] memfd_create("syzkaller", 0) = 3 [pid 5399] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5399] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5399] munmap(0x7f9b27b53000, 262144) = 0 [pid 5399] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5399] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5399] close(3) = 0 [pid 5399] mkdir("./file0", 0777) = 0 [pid 5399] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5399] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5399] chdir("./file0") = 0 [pid 5399] ioctl(4, LOOP_CLR_FD) = 0 [pid 5399] close(4) = 0 [ 51.983383][ T5397] loop0: detected capacity change from 0 to 512 [ 51.991159][ T5397] EXT4-fs: Ignoring removed oldalloc option [ 51.997562][ T5397] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 52.007347][ T5397] EXT4-fs (loop0): orphan cleanup on readonly fs [ 52.015083][ T5397] EXT4-fs (loop0): 1 truncate cleaned up [pid 5399] exit_group(0) = ? [pid 5399] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5399, si_uid=0, si_status=0, si_utime=0, si_stime=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, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./158/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5401 ./strace-static-x86_64: Process 5401 attached [pid 5401] chdir("./159") = 0 [pid 5401] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5401] setpgid(0, 0) = 0 [pid 5401] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5401] write(3, "1000", 4) = 4 [pid 5401] close(3) = 0 [pid 5401] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5401] memfd_create("syzkaller", 0) = 3 [pid 5401] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5401] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5401] munmap(0x7f9b27b53000, 262144) = 0 [pid 5401] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5401] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5401] close(3) = 0 [pid 5401] mkdir("./file0", 0777) = 0 [ 52.055759][ T5399] loop0: detected capacity change from 0 to 512 [ 52.063045][ T5399] EXT4-fs: Ignoring removed oldalloc option [ 52.069780][ T5399] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 52.079142][ T5399] EXT4-fs (loop0): orphan cleanup on readonly fs [ 52.086886][ T5399] EXT4-fs (loop0): 1 truncate cleaned up [pid 5401] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5401] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5401] chdir("./file0") = 0 [pid 5401] ioctl(4, LOOP_CLR_FD) = 0 [pid 5401] close(4) = 0 [pid 5401] exit_group(0) = ? [pid 5401] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5401, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./159/file0") = 0 getdents64(3, 0x55555591a620 /* 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./strace-static-x86_64: Process 5403 attached , child_tidptr=0x5555559195d0) = 5403 [pid 5403] chdir("./160") = 0 [pid 5403] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5403] setpgid(0, 0) = 0 [pid 5403] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5403] write(3, "1000", 4) = 4 [pid 5403] close(3) = 0 [pid 5403] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5403] memfd_create("syzkaller", 0) = 3 [pid 5403] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5403] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5403] munmap(0x7f9b27b53000, 262144) = 0 [pid 5403] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5403] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5403] close(3) = 0 [pid 5403] mkdir("./file0", 0777) = 0 [pid 5403] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5403] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5403] chdir("./file0") = 0 [pid 5403] ioctl(4, LOOP_CLR_FD) = 0 [ 52.115284][ T5401] loop0: detected capacity change from 0 to 512 [ 52.115709][ T5082] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 52.122669][ T5401] EXT4-fs: Ignoring removed oldalloc option [ 52.138316][ T5401] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 52.149404][ T5401] EXT4-fs (loop0): orphan cleanup on readonly fs [ 52.157771][ T5401] EXT4-fs (loop0): 1 truncate cleaned up [pid 5403] close(4) = 0 [pid 5403] exit_group(0) = ? [pid 5403] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5403, si_uid=0, si_status=0, si_utime=0, si_stime=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, 0x55555591a620 /* 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, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./160/file0") = 0 getdents64(3, 0x55555591a620 /* 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=0x5555559195d0) = 5405 ./strace-static-x86_64: Process 5405 attached [pid 5405] chdir("./161") = 0 [pid 5405] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5405] setpgid(0, 0) = 0 [pid 5405] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5405] write(3, "1000", 4) = 4 [pid 5405] close(3) = 0 [pid 5405] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5405] memfd_create("syzkaller", 0) = 3 [pid 5405] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5405] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5405] munmap(0x7f9b27b53000, 262144) = 0 [pid 5405] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5405] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5405] close(3) = 0 [pid 5405] mkdir("./file0", 0777) = 0 [pid 5405] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5405] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5405] chdir("./file0") = 0 [pid 5405] ioctl(4, LOOP_CLR_FD) = 0 [ 52.199233][ T5403] loop0: detected capacity change from 0 to 512 [ 52.206740][ T5403] EXT4-fs: Ignoring removed oldalloc option [ 52.213132][ T5403] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 52.223312][ T5403] EXT4-fs (loop0): orphan cleanup on readonly fs [ 52.231264][ T5403] EXT4-fs (loop0): 1 truncate cleaned up [pid 5405] close(4) = 0 [pid 5405] exit_group(0) = ? [pid 5405] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5405, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./161", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./161", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./161/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./161/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./161/binderfs") = 0 umount2("./161/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./161/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./161/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./161/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./161/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./161/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./161") = 0 mkdir("./162", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5407 ./strace-static-x86_64: Process 5407 attached [pid 5407] chdir("./162") = 0 [pid 5407] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5407] setpgid(0, 0) = 0 [pid 5407] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5407] write(3, "1000", 4) = 4 [pid 5407] close(3) = 0 [pid 5407] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5407] memfd_create("syzkaller", 0) = 3 [pid 5407] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5407] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5407] munmap(0x7f9b27b53000, 262144) = 0 [pid 5407] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5407] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5407] close(3) = 0 [pid 5407] mkdir("./file0", 0777) = 0 [pid 5407] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5407] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5407] chdir("./file0") = 0 [pid 5407] ioctl(4, LOOP_CLR_FD) = 0 [pid 5407] close(4) = 0 [pid 5407] exit_group(0) = ? [ 52.259624][ T5405] loop0: detected capacity change from 0 to 512 [ 52.266854][ T5405] EXT4-fs: Ignoring removed oldalloc option [ 52.273452][ T5405] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 52.283049][ T5405] EXT4-fs (loop0): orphan cleanup on readonly fs [ 52.291183][ T5405] EXT4-fs (loop0): 1 truncate cleaned up [pid 5407] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5407, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./162", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./162", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./162/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./162/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./162/binderfs") = 0 umount2("./162/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./162/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./162/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./162/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./162/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./162/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./162") = 0 mkdir("./163", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5409 ./strace-static-x86_64: Process 5409 attached [pid 5409] chdir("./163") = 0 [pid 5409] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5409] setpgid(0, 0) = 0 [pid 5409] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5409] write(3, "1000", 4) = 4 [pid 5409] close(3) = 0 [pid 5409] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5409] memfd_create("syzkaller", 0) = 3 [pid 5409] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5409] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5409] munmap(0x7f9b27b53000, 262144) = 0 [pid 5409] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5409] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5409] close(3) = 0 [pid 5409] mkdir("./file0", 0777) = 0 [pid 5409] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5409] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5409] chdir("./file0") = 0 [pid 5409] ioctl(4, LOOP_CLR_FD) = 0 [ 52.323174][ T5407] loop0: detected capacity change from 0 to 512 [ 52.330905][ T5407] EXT4-fs: Ignoring removed oldalloc option [ 52.337607][ T5407] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 52.347265][ T5407] EXT4-fs (loop0): orphan cleanup on readonly fs [ 52.355393][ T5407] EXT4-fs (loop0): 1 truncate cleaned up [pid 5409] close(4) = 0 [pid 5409] exit_group(0) = ? [pid 5409] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5409, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./163", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./163", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./163/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./163/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./163/binderfs") = 0 umount2("./163/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./163/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./163/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./163/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./163/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./163/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./163") = 0 mkdir("./164", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5411 attached , child_tidptr=0x5555559195d0) = 5411 [pid 5411] chdir("./164") = 0 [pid 5411] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5411] setpgid(0, 0) = 0 [pid 5411] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5411] write(3, "1000", 4) = 4 [pid 5411] close(3) = 0 [pid 5411] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5411] memfd_create("syzkaller", 0) = 3 [pid 5411] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5411] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5411] munmap(0x7f9b27b53000, 262144) = 0 [pid 5411] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5411] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5411] close(3) = 0 [pid 5411] mkdir("./file0", 0777) = 0 [pid 5411] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5411] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5411] chdir("./file0") = 0 [pid 5411] ioctl(4, LOOP_CLR_FD) = 0 [ 52.386173][ T5409] loop0: detected capacity change from 0 to 512 [ 52.394119][ T5409] EXT4-fs: Ignoring removed oldalloc option [ 52.400729][ T5409] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 52.410804][ T5409] EXT4-fs (loop0): orphan cleanup on readonly fs [ 52.418824][ T5409] EXT4-fs (loop0): 1 truncate cleaned up [pid 5411] close(4) = 0 [pid 5411] exit_group(0) = ? [pid 5411] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5411, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./164", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./164", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./164/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./164/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./164/binderfs") = 0 umount2("./164/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./164/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./164/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./164/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./164/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./164/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./164") = 0 mkdir("./165", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5413 ./strace-static-x86_64: Process 5413 attached [pid 5413] chdir("./165") = 0 [pid 5413] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5413] setpgid(0, 0) = 0 [pid 5413] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5413] write(3, "1000", 4) = 4 [pid 5413] close(3) = 0 [pid 5413] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5413] memfd_create("syzkaller", 0) = 3 [pid 5413] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5413] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5413] munmap(0x7f9b27b53000, 262144) = 0 [pid 5413] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5413] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5413] close(3) = 0 [pid 5413] mkdir("./file0", 0777) = 0 [pid 5413] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5413] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5413] chdir("./file0") = 0 [pid 5413] ioctl(4, LOOP_CLR_FD) = 0 [pid 5413] close(4) = 0 [pid 5413] exit_group(0) = ? [pid 5413] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5413, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./165", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./165", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./165/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./165/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./165/binderfs") = 0 [ 52.464462][ T5411] loop0: detected capacity change from 0 to 512 [ 52.472043][ T5411] EXT4-fs: Ignoring removed oldalloc option [ 52.478754][ T5411] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 52.488401][ T5411] EXT4-fs (loop0): orphan cleanup on readonly fs [ 52.496350][ T5411] EXT4-fs (loop0): 1 truncate cleaned up umount2("./165/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./165/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./165/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./165/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./165/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./165/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./165") = 0 mkdir("./166", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5415 ./strace-static-x86_64: Process 5415 attached [pid 5415] chdir("./166") = 0 [pid 5415] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5415] setpgid(0, 0) = 0 [pid 5415] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5415] write(3, "1000", 4) = 4 [pid 5415] close(3) = 0 [pid 5415] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5415] memfd_create("syzkaller", 0) = 3 [pid 5415] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5415] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5415] munmap(0x7f9b27b53000, 262144) = 0 [pid 5415] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5415] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5415] close(3) = 0 [pid 5415] mkdir("./file0", 0777) = 0 [pid 5415] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5415] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5415] chdir("./file0") = 0 [pid 5415] ioctl(4, LOOP_CLR_FD) = 0 [ 52.538191][ T5413] loop0: detected capacity change from 0 to 512 [ 52.545720][ T5413] EXT4-fs: Ignoring removed oldalloc option [ 52.552417][ T5413] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 52.561821][ T5413] EXT4-fs (loop0): orphan cleanup on readonly fs [ 52.569782][ T5413] EXT4-fs (loop0): 1 truncate cleaned up [pid 5415] close(4) = 0 [pid 5415] exit_group(0) = ? [pid 5415] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5415, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./166", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./166", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./166/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./166/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./166/binderfs") = 0 umount2("./166/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./166/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./166/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./166/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./166/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./166/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./166") = 0 mkdir("./167", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5417 ./strace-static-x86_64: Process 5417 attached [pid 5417] chdir("./167") = 0 [pid 5417] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5417] setpgid(0, 0) = 0 [pid 5417] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5417] write(3, "1000", 4) = 4 [pid 5417] close(3) = 0 [pid 5417] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5417] memfd_create("syzkaller", 0) = 3 [pid 5417] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5417] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5417] munmap(0x7f9b27b53000, 262144) = 0 [pid 5417] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5417] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5417] close(3) = 0 [pid 5417] mkdir("./file0", 0777) = 0 [pid 5417] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5417] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5417] chdir("./file0") = 0 [pid 5417] ioctl(4, LOOP_CLR_FD) = 0 [ 52.599119][ T5415] loop0: detected capacity change from 0 to 512 [ 52.606688][ T5415] EXT4-fs: Ignoring removed oldalloc option [ 52.613153][ T5415] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 52.622964][ T5415] EXT4-fs (loop0): orphan cleanup on readonly fs [ 52.630926][ T5415] EXT4-fs (loop0): 1 truncate cleaned up [pid 5417] close(4) = 0 [pid 5417] exit_group(0) = ? [pid 5417] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5417, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./167", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./167", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./167/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./167/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./167/binderfs") = 0 umount2("./167/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./167/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./167/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./167/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./167/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./167/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./167") = 0 mkdir("./168", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5419 attached , child_tidptr=0x5555559195d0) = 5419 [pid 5419] chdir("./168") = 0 [pid 5419] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5419] setpgid(0, 0) = 0 [pid 5419] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5419] write(3, "1000", 4) = 4 [pid 5419] close(3) = 0 [pid 5419] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5419] memfd_create("syzkaller", 0) = 3 [pid 5419] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5419] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5419] munmap(0x7f9b27b53000, 262144) = 0 [pid 5419] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5419] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5419] close(3) = 0 [pid 5419] mkdir("./file0", 0777) = 0 [ 52.658103][ T5417] loop0: detected capacity change from 0 to 512 [ 52.665283][ T5417] EXT4-fs: Ignoring removed oldalloc option [ 52.671872][ T5417] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 52.681479][ T5417] EXT4-fs (loop0): orphan cleanup on readonly fs [ 52.689217][ T5417] EXT4-fs (loop0): 1 truncate cleaned up [pid 5419] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5419] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5419] chdir("./file0") = 0 [pid 5419] ioctl(4, LOOP_CLR_FD) = 0 [pid 5419] close(4) = 0 [pid 5419] exit_group(0) = ? [pid 5419] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5419, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./168", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./168", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./168/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./168/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./168/binderfs") = 0 umount2("./168/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./168/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./168/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./168/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./168/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./168/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./168") = 0 mkdir("./169", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5421 ./strace-static-x86_64: Process 5421 attached [pid 5421] chdir("./169") = 0 [pid 5421] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5421] setpgid(0, 0) = 0 [pid 5421] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5421] write(3, "1000", 4) = 4 [pid 5421] close(3) = 0 [pid 5421] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5421] memfd_create("syzkaller", 0) = 3 [pid 5421] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5421] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5421] munmap(0x7f9b27b53000, 262144) = 0 [pid 5421] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5421] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5421] close(3) = 0 [pid 5421] mkdir("./file0", 0777) = 0 [ 52.728870][ T5419] loop0: detected capacity change from 0 to 512 [ 52.736639][ T5419] EXT4-fs: Ignoring removed oldalloc option [ 52.743234][ T5419] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 52.752900][ T5419] EXT4-fs (loop0): orphan cleanup on readonly fs [ 52.761041][ T5419] EXT4-fs (loop0): 1 truncate cleaned up [pid 5421] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5421] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5421] chdir("./file0") = 0 [pid 5421] ioctl(4, LOOP_CLR_FD) = 0 [pid 5421] close(4) = 0 [pid 5421] exit_group(0) = ? [pid 5421] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5421, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./169", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./169", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./169/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./169/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./169/binderfs") = 0 umount2("./169/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./169/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./169/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./169/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./169/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./169/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./169") = 0 mkdir("./170", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5423 ./strace-static-x86_64: Process 5423 attached [pid 5423] chdir("./170") = 0 [pid 5423] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5423] setpgid(0, 0) = 0 [pid 5423] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5423] write(3, "1000", 4) = 4 [pid 5423] close(3) = 0 [pid 5423] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5423] memfd_create("syzkaller", 0) = 3 [pid 5423] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5423] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5423] munmap(0x7f9b27b53000, 262144) = 0 [pid 5423] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5423] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5423] close(3) = 0 [pid 5423] mkdir("./file0", 0777) = 0 [ 52.823066][ T5421] loop0: detected capacity change from 0 to 512 [ 52.830779][ T5421] EXT4-fs: Ignoring removed oldalloc option [ 52.837381][ T5421] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 52.847129][ T5421] EXT4-fs (loop0): orphan cleanup on readonly fs [ 52.855001][ T5421] EXT4-fs (loop0): 1 truncate cleaned up [pid 5423] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5423] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5423] chdir("./file0") = 0 [pid 5423] ioctl(4, LOOP_CLR_FD) = 0 [pid 5423] close(4) = 0 [pid 5423] exit_group(0) = ? [pid 5423] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5423, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./170", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./170", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./170/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./170/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./170/binderfs") = 0 umount2("./170/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./170/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./170/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./170/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./170/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./170/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./170") = 0 mkdir("./171", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5425 ./strace-static-x86_64: Process 5425 attached [pid 5425] chdir("./171") = 0 [pid 5425] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5425] setpgid(0, 0) = 0 [pid 5425] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5425] write(3, "1000", 4) = 4 [pid 5425] close(3) = 0 [pid 5425] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5425] memfd_create("syzkaller", 0) = 3 [pid 5425] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5425] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5425] munmap(0x7f9b27b53000, 262144) = 0 [pid 5425] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5425] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5425] close(3) = 0 [pid 5425] mkdir("./file0", 0777) = 0 [pid 5425] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5425] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5425] chdir("./file0") = 0 [pid 5425] ioctl(4, LOOP_CLR_FD) = 0 [ 52.884272][ T5423] loop0: detected capacity change from 0 to 512 [ 52.885053][ T5082] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 52.891474][ T5423] EXT4-fs: Ignoring removed oldalloc option [ 52.906977][ T5423] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 52.916633][ T5423] EXT4-fs (loop0): orphan cleanup on readonly fs [ 52.924480][ T5423] EXT4-fs (loop0): 1 truncate cleaned up [pid 5425] close(4) = 0 [pid 5425] exit_group(0) = ? [pid 5425] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5425, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./171", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./171", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./171/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./171/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./171/binderfs") = 0 umount2("./171/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./171/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./171/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./171/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./171/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./171/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./171") = 0 mkdir("./172", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5427 attached [pid 5427] chdir("./172") = 0 [pid 5080] <... clone resumed>, child_tidptr=0x5555559195d0) = 5427 [pid 5427] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5427] setpgid(0, 0) = 0 [pid 5427] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5427] write(3, "1000", 4) = 4 [pid 5427] close(3) = 0 [pid 5427] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5427] memfd_create("syzkaller", 0) = 3 [pid 5427] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5427] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5427] munmap(0x7f9b27b53000, 262144) = 0 [pid 5427] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5427] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5427] close(3) = 0 [pid 5427] mkdir("./file0", 0777) = 0 [pid 5427] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5427] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5427] chdir("./file0") = 0 [pid 5427] ioctl(4, LOOP_CLR_FD) = 0 [pid 5427] close(4) = 0 [pid 5427] exit_group(0) = ? [pid 5427] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5427, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./172", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./172", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./172/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./172/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./172/binderfs") = 0 [ 52.965255][ T5425] loop0: detected capacity change from 0 to 512 [ 52.973208][ T5425] EXT4-fs: Ignoring removed oldalloc option [ 52.979617][ T5425] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 52.989243][ T5425] EXT4-fs (loop0): orphan cleanup on readonly fs [ 52.996994][ T5425] EXT4-fs (loop0): 1 truncate cleaned up umount2("./172/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./172/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./172/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./172/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./172/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./172/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./172") = 0 mkdir("./173", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5429 ./strace-static-x86_64: Process 5429 attached [pid 5429] chdir("./173") = 0 [pid 5429] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5429] setpgid(0, 0) = 0 [pid 5429] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5429] write(3, "1000", 4) = 4 [pid 5429] close(3) = 0 [pid 5429] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5429] memfd_create("syzkaller", 0) = 3 [pid 5429] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5429] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5429] munmap(0x7f9b27b53000, 262144) = 0 [pid 5429] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5429] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5429] close(3) = 0 [pid 5429] mkdir("./file0", 0777) = 0 [pid 5429] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5429] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5429] chdir("./file0") = 0 [pid 5429] ioctl(4, LOOP_CLR_FD) = 0 [ 53.040253][ T5427] loop0: detected capacity change from 0 to 512 [ 53.047701][ T5427] EXT4-fs: Ignoring removed oldalloc option [ 53.054384][ T5427] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 53.064080][ T5427] EXT4-fs (loop0): orphan cleanup on readonly fs [ 53.071989][ T5427] EXT4-fs (loop0): 1 truncate cleaned up [pid 5429] close(4) = 0 [pid 5429] exit_group(0) = ? [pid 5429] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5429, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./173", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./173", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./173/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./173/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./173/binderfs") = 0 umount2("./173/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./173/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./173/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./173/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./173/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./173/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./173") = 0 mkdir("./174", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5431 ./strace-static-x86_64: Process 5431 attached [pid 5431] chdir("./174") = 0 [pid 5431] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5431] setpgid(0, 0) = 0 [pid 5431] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5431] write(3, "1000", 4) = 4 [pid 5431] close(3) = 0 [pid 5431] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5431] memfd_create("syzkaller", 0) = 3 [pid 5431] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5431] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5431] munmap(0x7f9b27b53000, 262144) = 0 [pid 5431] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5431] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5431] close(3) = 0 [pid 5431] mkdir("./file0", 0777) = 0 [pid 5431] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5431] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5431] chdir("./file0") = 0 [pid 5431] ioctl(4, LOOP_CLR_FD) = 0 [pid 5431] close(4) = 0 [ 53.095948][ T5429] loop0: detected capacity change from 0 to 512 [ 53.103650][ T5429] EXT4-fs: Ignoring removed oldalloc option [ 53.110269][ T5429] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 53.119967][ T5429] EXT4-fs (loop0): orphan cleanup on readonly fs [ 53.127871][ T5429] EXT4-fs (loop0): 1 truncate cleaned up [pid 5431] exit_group(0) = ? [pid 5431] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5431, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./174", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./174", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./174/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./174/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./174/binderfs") = 0 umount2("./174/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./174/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./174/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./174/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./174/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./174/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./174") = 0 mkdir("./175", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5433 ./strace-static-x86_64: Process 5433 attached [pid 5433] chdir("./175") = 0 [pid 5433] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5433] setpgid(0, 0) = 0 [pid 5433] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5433] write(3, "1000", 4) = 4 [pid 5433] close(3) = 0 [pid 5433] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5433] memfd_create("syzkaller", 0) = 3 [pid 5433] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5433] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5433] munmap(0x7f9b27b53000, 262144) = 0 [pid 5433] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5433] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5433] close(3) = 0 [pid 5433] mkdir("./file0", 0777) = 0 [pid 5433] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5433] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5433] chdir("./file0") = 0 [pid 5433] ioctl(4, LOOP_CLR_FD) = 0 [pid 5433] close(4) = 0 [pid 5433] exit_group(0) = ? [pid 5433] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5433, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./175", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./175", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 [ 53.157419][ T5431] loop0: detected capacity change from 0 to 512 [ 53.164925][ T5431] EXT4-fs: Ignoring removed oldalloc option [ 53.171525][ T5431] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 53.181114][ T5431] EXT4-fs (loop0): orphan cleanup on readonly fs [ 53.188914][ T5431] EXT4-fs (loop0): 1 truncate cleaned up umount2("./175/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./175/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./175/binderfs") = 0 umount2("./175/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./175/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./175/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./175/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./175/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./175/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./175") = 0 mkdir("./176", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5435 ./strace-static-x86_64: Process 5435 attached [pid 5435] chdir("./176") = 0 [pid 5435] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5435] setpgid(0, 0) = 0 [pid 5435] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5435] write(3, "1000", 4) = 4 [pid 5435] close(3) = 0 [pid 5435] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5435] memfd_create("syzkaller", 0) = 3 [pid 5435] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5435] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5435] munmap(0x7f9b27b53000, 262144) = 0 [pid 5435] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5435] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5435] close(3) = 0 [pid 5435] mkdir("./file0", 0777) = 0 [pid 5435] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5435] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5435] chdir("./file0") = 0 [pid 5435] ioctl(4, LOOP_CLR_FD) = 0 [ 53.228903][ T5433] loop0: detected capacity change from 0 to 512 [ 53.236407][ T5433] EXT4-fs: Ignoring removed oldalloc option [ 53.242782][ T5433] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 53.252581][ T5433] EXT4-fs (loop0): orphan cleanup on readonly fs [ 53.260605][ T5433] EXT4-fs (loop0): 1 truncate cleaned up [pid 5435] close(4) = 0 [pid 5435] exit_group(0) = ? [pid 5435] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5435, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./176", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./176", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./176/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./176/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./176/binderfs") = 0 umount2("./176/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./176/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./176/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./176/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./176/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./176/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./176") = 0 mkdir("./177", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5437 ./strace-static-x86_64: Process 5437 attached [pid 5437] chdir("./177") = 0 [pid 5437] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5437] setpgid(0, 0) = 0 [pid 5437] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5437] write(3, "1000", 4) = 4 [pid 5437] close(3) = 0 [pid 5437] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5437] memfd_create("syzkaller", 0) = 3 [pid 5437] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5437] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5437] munmap(0x7f9b27b53000, 262144) = 0 [pid 5437] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5437] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5437] close(3) = 0 [pid 5437] mkdir("./file0", 0777) = 0 [pid 5437] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5437] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5437] chdir("./file0") = 0 [pid 5437] ioctl(4, LOOP_CLR_FD) = 0 [ 53.288910][ T5435] loop0: detected capacity change from 0 to 512 [ 53.296460][ T5435] EXT4-fs: Ignoring removed oldalloc option [ 53.302735][ T5435] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 53.312312][ T5435] EXT4-fs (loop0): orphan cleanup on readonly fs [ 53.320896][ T5435] EXT4-fs (loop0): 1 truncate cleaned up [pid 5437] close(4) = 0 [pid 5437] exit_group(0) = ? [pid 5437] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5437, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./177", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./177", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./177/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./177/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./177/binderfs") = 0 umount2("./177/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./177/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./177/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./177/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./177/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./177/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./177") = 0 mkdir("./178", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5439 ./strace-static-x86_64: Process 5439 attached [pid 5439] chdir("./178") = 0 [pid 5439] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5439] setpgid(0, 0) = 0 [pid 5439] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5439] write(3, "1000", 4) = 4 [pid 5439] close(3) = 0 [pid 5439] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5439] memfd_create("syzkaller", 0) = 3 [pid 5439] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5439] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5439] munmap(0x7f9b27b53000, 262144) = 0 [pid 5439] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5439] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5439] close(3) = 0 [pid 5439] mkdir("./file0", 0777) = 0 [pid 5439] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5439] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5439] chdir("./file0") = 0 [pid 5439] ioctl(4, LOOP_CLR_FD) = 0 [pid 5439] close(4) = 0 [ 53.361793][ T5437] loop0: detected capacity change from 0 to 512 [ 53.369564][ T5437] EXT4-fs: Ignoring removed oldalloc option [ 53.376027][ T5437] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 53.385687][ T5437] EXT4-fs (loop0): orphan cleanup on readonly fs [ 53.393731][ T5437] EXT4-fs (loop0): 1 truncate cleaned up [pid 5439] exit_group(0) = ? [pid 5439] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5439, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./178", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./178", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./178/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./178/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./178/binderfs") = 0 umount2("./178/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./178/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./178/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./178/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./178/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./178/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./178") = 0 mkdir("./179", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5441 ./strace-static-x86_64: Process 5441 attached [pid 5441] chdir("./179") = 0 [pid 5441] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5441] setpgid(0, 0) = 0 [pid 5441] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5441] write(3, "1000", 4) = 4 [pid 5441] close(3) = 0 [pid 5441] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5441] memfd_create("syzkaller", 0) = 3 [pid 5441] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5441] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5441] munmap(0x7f9b27b53000, 262144) = 0 [pid 5441] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5441] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5441] close(3) = 0 [pid 5441] mkdir("./file0", 0777) = 0 [pid 5441] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5441] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5441] chdir("./file0") = 0 [pid 5441] ioctl(4, LOOP_CLR_FD) = 0 [pid 5441] close(4) = 0 [pid 5441] exit_group(0) = ? [pid 5441] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5441, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- umount2("./179", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 53.425970][ T5439] loop0: detected capacity change from 0 to 512 [ 53.433206][ T5439] EXT4-fs: Ignoring removed oldalloc option [ 53.439970][ T5439] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 53.449535][ T5439] EXT4-fs (loop0): orphan cleanup on readonly fs [ 53.457335][ T5439] EXT4-fs (loop0): 1 truncate cleaned up openat(AT_FDCWD, "./179", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./179/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./179/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./179/binderfs") = 0 umount2("./179/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./179/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./179/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./179/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./179/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./179/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./179") = 0 mkdir("./180", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5443 ./strace-static-x86_64: Process 5443 attached [pid 5443] chdir("./180") = 0 [pid 5443] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5443] setpgid(0, 0) = 0 [pid 5443] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5443] write(3, "1000", 4) = 4 [pid 5443] close(3) = 0 [pid 5443] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5443] memfd_create("syzkaller", 0) = 3 [pid 5443] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5443] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5443] munmap(0x7f9b27b53000, 262144) = 0 [pid 5443] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5443] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5443] close(3) = 0 [pid 5443] mkdir("./file0", 0777) = 0 [pid 5443] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5443] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5443] chdir("./file0") = 0 [pid 5443] ioctl(4, LOOP_CLR_FD) = 0 [pid 5443] close(4) = 0 [ 53.485281][ T5441] loop0: detected capacity change from 0 to 512 [ 53.493062][ T5441] EXT4-fs: Ignoring removed oldalloc option [ 53.499540][ T5441] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 53.509615][ T5441] EXT4-fs (loop0): orphan cleanup on readonly fs [ 53.517603][ T5441] EXT4-fs (loop0): 1 truncate cleaned up [pid 5443] exit_group(0) = ? [pid 5443] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5443, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./180", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./180", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./180/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./180/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./180/binderfs") = 0 umount2("./180/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./180/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./180/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./180/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./180/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./180/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./180") = 0 mkdir("./181", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5445 ./strace-static-x86_64: Process 5445 attached [pid 5445] chdir("./181") = 0 [pid 5445] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5445] setpgid(0, 0) = 0 [pid 5445] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5445] write(3, "1000", 4) = 4 [pid 5445] close(3) = 0 [pid 5445] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5445] memfd_create("syzkaller", 0) = 3 [pid 5445] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5445] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5445] munmap(0x7f9b27b53000, 262144) = 0 [pid 5445] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5445] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5445] close(3) = 0 [pid 5445] mkdir("./file0", 0777) = 0 [pid 5445] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5445] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5445] chdir("./file0") = 0 [pid 5445] ioctl(4, LOOP_CLR_FD) = 0 [pid 5445] close(4) = 0 [pid 5445] exit_group(0) = ? [pid 5445] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5445, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./181", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./181", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./181/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./181/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./181/binderfs") = 0 [ 53.546646][ T5443] loop0: detected capacity change from 0 to 512 [ 53.553977][ T5443] EXT4-fs: Ignoring removed oldalloc option [ 53.560536][ T5443] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 53.569938][ T5443] EXT4-fs (loop0): orphan cleanup on readonly fs [ 53.578242][ T5443] EXT4-fs (loop0): 1 truncate cleaned up umount2("./181/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./181/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./181/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./181/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./181/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./181/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./181") = 0 mkdir("./182", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5447 ./strace-static-x86_64: Process 5447 attached [pid 5447] chdir("./182") = 0 [pid 5447] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5447] setpgid(0, 0) = 0 [pid 5447] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5447] write(3, "1000", 4) = 4 [pid 5447] close(3) = 0 [pid 5447] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5447] memfd_create("syzkaller", 0) = 3 [pid 5447] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5447] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5447] munmap(0x7f9b27b53000, 262144) = 0 [pid 5447] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5447] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5447] close(3) = 0 [pid 5447] mkdir("./file0", 0777) = 0 [pid 5447] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5447] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5447] chdir("./file0") = 0 [pid 5447] ioctl(4, LOOP_CLR_FD) = 0 [pid 5447] close(4) = 0 [pid 5447] exit_group(0) = ? [ 53.618436][ T5445] loop0: detected capacity change from 0 to 512 [ 53.625940][ T5445] EXT4-fs: Ignoring removed oldalloc option [ 53.632436][ T5445] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 53.642358][ T5445] EXT4-fs (loop0): orphan cleanup on readonly fs [ 53.650237][ T5445] EXT4-fs (loop0): 1 truncate cleaned up [pid 5447] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5447, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./182", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./182", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./182/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./182/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./182/binderfs") = 0 umount2("./182/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./182/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./182/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./182/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./182/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./182/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./182") = 0 mkdir("./183", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5449 ./strace-static-x86_64: Process 5449 attached [pid 5449] chdir("./183") = 0 [pid 5449] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5449] setpgid(0, 0) = 0 [pid 5449] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5449] write(3, "1000", 4) = 4 [pid 5449] close(3) = 0 [pid 5449] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5449] memfd_create("syzkaller", 0) = 3 [pid 5449] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5449] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5449] munmap(0x7f9b27b53000, 262144) = 0 [pid 5449] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5449] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5449] close(3) = 0 [pid 5449] mkdir("./file0", 0777) = 0 [pid 5449] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5449] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5449] chdir("./file0") = 0 [pid 5449] ioctl(4, LOOP_CLR_FD) = 0 [ 53.687963][ T5447] loop0: detected capacity change from 0 to 512 [ 53.696128][ T5447] EXT4-fs: Ignoring removed oldalloc option [ 53.702724][ T5447] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 53.712425][ T5447] EXT4-fs (loop0): orphan cleanup on readonly fs [ 53.720679][ T5447] EXT4-fs (loop0): 1 truncate cleaned up [pid 5449] close(4) = 0 [pid 5449] exit_group(0) = ? [pid 5449] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5449, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./183", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./183", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./183/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./183/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./183/binderfs") = 0 umount2("./183/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./183/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./183/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./183/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./183/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./183/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./183") = 0 mkdir("./184", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5451 attached , child_tidptr=0x5555559195d0) = 5451 [pid 5451] chdir("./184") = 0 [pid 5451] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5451] setpgid(0, 0) = 0 [pid 5451] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5451] write(3, "1000", 4) = 4 [pid 5451] close(3) = 0 [pid 5451] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5451] memfd_create("syzkaller", 0) = 3 [pid 5451] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5451] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5451] munmap(0x7f9b27b53000, 262144) = 0 [pid 5451] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5451] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5451] close(3) = 0 [pid 5451] mkdir("./file0", 0777) = 0 [pid 5451] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5451] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5451] chdir("./file0") = 0 [pid 5451] ioctl(4, LOOP_CLR_FD) = 0 [ 53.753293][ T5449] loop0: detected capacity change from 0 to 512 [ 53.761482][ T5449] EXT4-fs: Ignoring removed oldalloc option [ 53.768294][ T5449] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 53.777964][ T5449] EXT4-fs (loop0): orphan cleanup on readonly fs [ 53.785804][ T5449] EXT4-fs (loop0): 1 truncate cleaned up [pid 5451] close(4) = 0 [pid 5451] exit_group(0) = ? [pid 5451] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5451, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./184", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./184", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./184/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./184/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./184/binderfs") = 0 umount2("./184/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./184/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./184/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./184/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./184/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./184/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./184") = 0 mkdir("./185", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5453 attached [pid 5453] chdir("./185" [pid 5080] <... clone resumed>, child_tidptr=0x5555559195d0) = 5453 [pid 5453] <... chdir resumed>) = 0 [pid 5453] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5453] setpgid(0, 0) = 0 [pid 5453] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5453] write(3, "1000", 4) = 4 [pid 5453] close(3) = 0 [pid 5453] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5453] memfd_create("syzkaller", 0) = 3 [pid 5453] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5453] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5453] munmap(0x7f9b27b53000, 262144) = 0 [pid 5453] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5453] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5453] close(3) = 0 [pid 5453] mkdir("./file0", 0777) = 0 [ 53.829355][ T5451] loop0: detected capacity change from 0 to 512 [ 53.836734][ T5451] EXT4-fs: Ignoring removed oldalloc option [ 53.843396][ T5451] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 53.852901][ T5451] EXT4-fs (loop0): orphan cleanup on readonly fs [ 53.860733][ T5451] EXT4-fs (loop0): 1 truncate cleaned up [pid 5453] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5453] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5453] chdir("./file0") = 0 [pid 5453] ioctl(4, LOOP_CLR_FD) = 0 [pid 5453] close(4) = 0 [pid 5453] exit_group(0) = ? [pid 5453] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5453, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./185", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./185", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./185/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./185/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./185/binderfs") = 0 umount2("./185/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./185/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./185/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./185/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./185/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./185/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./185") = 0 mkdir("./186", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5455 ./strace-static-x86_64: Process 5455 attached [pid 5455] chdir("./186") = 0 [pid 5455] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5455] setpgid(0, 0) = 0 [pid 5455] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5455] write(3, "1000", 4) = 4 [pid 5455] close(3) = 0 [pid 5455] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5455] memfd_create("syzkaller", 0) = 3 [pid 5455] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5455] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5455] munmap(0x7f9b27b53000, 262144) = 0 [pid 5455] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5455] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5455] close(3) = 0 [pid 5455] mkdir("./file0", 0777) = 0 [pid 5455] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5455] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5455] chdir("./file0") = 0 [pid 5455] ioctl(4, LOOP_CLR_FD) = 0 [ 53.900669][ T5453] loop0: detected capacity change from 0 to 512 [ 53.908612][ T5453] EXT4-fs: Ignoring removed oldalloc option [ 53.915050][ T5453] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 53.925098][ T5453] EXT4-fs (loop0): orphan cleanup on readonly fs [ 53.933187][ T5453] EXT4-fs (loop0): 1 truncate cleaned up [pid 5455] close(4) = 0 [pid 5455] exit_group(0) = ? [pid 5455] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5455, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./186", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./186", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./186/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./186/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./186/binderfs") = 0 umount2("./186/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./186/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./186/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./186/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./186/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./186/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./186") = 0 mkdir("./187", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5457 ./strace-static-x86_64: Process 5457 attached [pid 5457] chdir("./187") = 0 [pid 5457] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5457] setpgid(0, 0) = 0 [pid 5457] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5457] write(3, "1000", 4) = 4 [pid 5457] close(3) = 0 [pid 5457] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5457] memfd_create("syzkaller", 0) = 3 [pid 5457] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5457] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5457] munmap(0x7f9b27b53000, 262144) = 0 [pid 5457] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5457] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5457] close(3) = 0 [pid 5457] mkdir("./file0", 0777) = 0 [pid 5457] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5457] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5457] chdir("./file0") = 0 [pid 5457] ioctl(4, LOOP_CLR_FD) = 0 [ 53.968540][ T5455] loop0: detected capacity change from 0 to 512 [ 53.976472][ T5455] EXT4-fs: Ignoring removed oldalloc option [ 53.982902][ T5455] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 53.992493][ T5455] EXT4-fs (loop0): orphan cleanup on readonly fs [ 54.000758][ T5455] EXT4-fs (loop0): 1 truncate cleaned up [pid 5457] close(4) = 0 [pid 5457] exit_group(0) = ? [pid 5457] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5457, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./187", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./187", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./187/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./187/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./187/binderfs") = 0 umount2("./187/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./187/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./187/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./187/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./187/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./187/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./187") = 0 mkdir("./188", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5459 attached [pid 5459] chdir("./188") = 0 [pid 5080] <... clone resumed>, child_tidptr=0x5555559195d0) = 5459 [pid 5459] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5459] setpgid(0, 0) = 0 [pid 5459] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5459] write(3, "1000", 4) = 4 [pid 5459] close(3) = 0 [pid 5459] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5459] memfd_create("syzkaller", 0) = 3 [pid 5459] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5459] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5459] munmap(0x7f9b27b53000, 262144) = 0 [pid 5459] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5459] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5459] close(3) = 0 [pid 5459] mkdir("./file0", 0777) = 0 [pid 5459] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5459] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5459] chdir("./file0") = 0 [pid 5459] ioctl(4, LOOP_CLR_FD) = 0 [ 54.031446][ T5457] loop0: detected capacity change from 0 to 512 [ 54.038846][ T5457] EXT4-fs: Ignoring removed oldalloc option [ 54.045223][ T5457] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 54.054915][ T5457] EXT4-fs (loop0): orphan cleanup on readonly fs [ 54.062921][ T5457] EXT4-fs (loop0): 1 truncate cleaned up [pid 5459] close(4) = 0 [pid 5459] exit_group(0) = ? [pid 5459] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5459, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./188", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./188", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./188/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./188/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./188/binderfs") = 0 umount2("./188/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./188/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./188/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./188/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./188/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./188/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./188") = 0 mkdir("./189", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5461 ./strace-static-x86_64: Process 5461 attached [pid 5461] chdir("./189") = 0 [pid 5461] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5461] setpgid(0, 0) = 0 [pid 5461] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5461] write(3, "1000", 4) = 4 [pid 5461] close(3) = 0 [pid 5461] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5461] memfd_create("syzkaller", 0) = 3 [pid 5461] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5461] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5461] munmap(0x7f9b27b53000, 262144) = 0 [pid 5461] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5461] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5461] close(3) = 0 [pid 5461] mkdir("./file0", 0777) = 0 [pid 5461] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5461] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5461] chdir("./file0") = 0 [pid 5461] ioctl(4, LOOP_CLR_FD) = 0 [ 54.102834][ T5459] loop0: detected capacity change from 0 to 512 [ 54.110638][ T5459] EXT4-fs: Ignoring removed oldalloc option [ 54.117135][ T5459] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 54.127351][ T5459] EXT4-fs (loop0): orphan cleanup on readonly fs [ 54.135095][ T5459] EXT4-fs (loop0): 1 truncate cleaned up [pid 5461] close(4) = 0 [pid 5461] exit_group(0) = ? [pid 5461] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5461, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./189", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./189", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./189/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./189/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./189/binderfs") = 0 umount2("./189/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./189/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./189/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./189/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./189/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./189/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./189") = 0 mkdir("./190", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5463 ./strace-static-x86_64: Process 5463 attached [pid 5463] chdir("./190") = 0 [pid 5463] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5463] setpgid(0, 0) = 0 [pid 5463] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5463] write(3, "1000", 4) = 4 [pid 5463] close(3) = 0 [pid 5463] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5463] memfd_create("syzkaller", 0) = 3 [pid 5463] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5463] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5463] munmap(0x7f9b27b53000, 262144) = 0 [pid 5463] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5463] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5463] close(3) = 0 [pid 5463] mkdir("./file0", 0777) = 0 [ 54.179055][ T5461] loop0: detected capacity change from 0 to 512 [ 54.186783][ T5461] EXT4-fs: Ignoring removed oldalloc option [ 54.193277][ T5461] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 54.202820][ T5461] EXT4-fs (loop0): orphan cleanup on readonly fs [ 54.210650][ T5461] EXT4-fs (loop0): 1 truncate cleaned up [pid 5463] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5463] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5463] chdir("./file0") = 0 [pid 5463] ioctl(4, LOOP_CLR_FD) = 0 [pid 5463] close(4) = 0 [pid 5463] exit_group(0) = ? [pid 5463] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5463, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./190", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./190", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./190/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./190/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./190/binderfs") = 0 umount2("./190/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./190/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./190/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./190/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./190/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./190/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./190") = 0 mkdir("./191", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5465 ./strace-static-x86_64: Process 5465 attached [pid 5465] chdir("./191") = 0 [pid 5465] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5465] setpgid(0, 0) = 0 [pid 5465] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5465] write(3, "1000", 4) = 4 [pid 5465] close(3) = 0 [pid 5465] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5465] memfd_create("syzkaller", 0) = 3 [pid 5465] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5465] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5465] munmap(0x7f9b27b53000, 262144) = 0 [pid 5465] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5465] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5465] close(3) = 0 [pid 5465] mkdir("./file0", 0777) = 0 [pid 5465] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5465] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5465] chdir("./file0") = 0 [pid 5465] ioctl(4, LOOP_CLR_FD) = 0 [pid 5465] close(4) = 0 [ 54.241024][ T5463] loop0: detected capacity change from 0 to 512 [ 54.241958][ T5082] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 54.248222][ T5463] EXT4-fs: Ignoring removed oldalloc option [ 54.263411][ T5463] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 54.272969][ T5463] EXT4-fs (loop0): orphan cleanup on readonly fs [ 54.280793][ T5463] EXT4-fs (loop0): 1 truncate cleaned up [pid 5465] exit_group(0) = ? [pid 5465] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5465, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./191", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./191", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./191/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./191/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./191/binderfs") = 0 umount2("./191/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./191/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./191/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./191/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./191/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./191/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./191") = 0 mkdir("./192", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5467 attached , child_tidptr=0x5555559195d0) = 5467 [pid 5467] chdir("./192") = 0 [pid 5467] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5467] setpgid(0, 0) = 0 [pid 5467] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5467] write(3, "1000", 4) = 4 [pid 5467] close(3) = 0 [pid 5467] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5467] memfd_create("syzkaller", 0) = 3 [pid 5467] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5467] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5467] munmap(0x7f9b27b53000, 262144) = 0 [pid 5467] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5467] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5467] close(3) = 0 [pid 5467] mkdir("./file0", 0777) = 0 [pid 5467] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5467] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5467] chdir("./file0") = 0 [pid 5467] ioctl(4, LOOP_CLR_FD) = 0 [pid 5467] close(4) = 0 [pid 5467] exit_group(0) = ? [pid 5467] +++ exited with 0 +++ [ 54.311060][ T5465] loop0: detected capacity change from 0 to 512 [ 54.318878][ T5465] EXT4-fs: Ignoring removed oldalloc option [ 54.325208][ T5465] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 54.334740][ T5465] EXT4-fs (loop0): orphan cleanup on readonly fs [ 54.342602][ T5465] EXT4-fs (loop0): 1 truncate cleaned up --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5467, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./192", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./192", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./192/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./192/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./192/binderfs") = 0 umount2("./192/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./192/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./192/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./192/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./192/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./192/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./192") = 0 mkdir("./193", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5469 ./strace-static-x86_64: Process 5469 attached [pid 5469] chdir("./193") = 0 [pid 5469] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5469] setpgid(0, 0) = 0 [pid 5469] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5469] write(3, "1000", 4) = 4 [pid 5469] close(3) = 0 [pid 5469] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5469] memfd_create("syzkaller", 0) = 3 [pid 5469] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5469] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5469] munmap(0x7f9b27b53000, 262144) = 0 [pid 5469] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5469] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5469] close(3) = 0 [pid 5469] mkdir("./file0", 0777) = 0 [pid 5469] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5469] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5469] chdir("./file0") = 0 [pid 5469] ioctl(4, LOOP_CLR_FD) = 0 [ 54.378481][ T5467] loop0: detected capacity change from 0 to 512 [ 54.386075][ T5467] EXT4-fs: Ignoring removed oldalloc option [ 54.392849][ T5467] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 54.402625][ T5467] EXT4-fs (loop0): orphan cleanup on readonly fs [ 54.410276][ T5467] EXT4-fs (loop0): 1 truncate cleaned up [pid 5469] close(4) = 0 [pid 5469] exit_group(0) = ? [pid 5469] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5469, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./193", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./193", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./193/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./193/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./193/binderfs") = 0 umount2("./193/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./193/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./193/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./193/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./193/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./193/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./193") = 0 mkdir("./194", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5471 ./strace-static-x86_64: Process 5471 attached [pid 5471] chdir("./194") = 0 [pid 5471] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5471] setpgid(0, 0) = 0 [pid 5471] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5471] write(3, "1000", 4) = 4 [pid 5471] close(3) = 0 [pid 5471] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5471] memfd_create("syzkaller", 0) = 3 [pid 5471] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5471] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5471] munmap(0x7f9b27b53000, 262144) = 0 [pid 5471] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5471] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5471] close(3) = 0 [pid 5471] mkdir("./file0", 0777) = 0 [ 54.440558][ T5469] loop0: detected capacity change from 0 to 512 [ 54.448136][ T5469] EXT4-fs: Ignoring removed oldalloc option [ 54.454562][ T5469] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 54.464132][ T5469] EXT4-fs (loop0): orphan cleanup on readonly fs [ 54.472246][ T5469] EXT4-fs (loop0): 1 truncate cleaned up [pid 5471] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5471] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5471] chdir("./file0") = 0 [pid 5471] ioctl(4, LOOP_CLR_FD) = 0 [pid 5471] close(4) = 0 [pid 5471] exit_group(0) = ? [pid 5471] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5471, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./194", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./194", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./194/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./194/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./194/binderfs") = 0 umount2("./194/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./194/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./194/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./194/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./194/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./194/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./194") = 0 mkdir("./195", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5473 attached , child_tidptr=0x5555559195d0) = 5473 [pid 5473] chdir("./195") = 0 [pid 5473] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5473] setpgid(0, 0) = 0 [pid 5473] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5473] write(3, "1000", 4) = 4 [pid 5473] close(3) = 0 [pid 5473] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5473] memfd_create("syzkaller", 0) = 3 [pid 5473] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5473] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5473] munmap(0x7f9b27b53000, 262144) = 0 [pid 5473] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5473] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5473] close(3) = 0 [pid 5473] mkdir("./file0", 0777) = 0 [ 54.500682][ T5471] loop0: detected capacity change from 0 to 512 [ 54.508353][ T5471] EXT4-fs: Ignoring removed oldalloc option [ 54.515205][ T5471] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 54.524815][ T5471] EXT4-fs (loop0): orphan cleanup on readonly fs [ 54.533108][ T5471] EXT4-fs (loop0): 1 truncate cleaned up [pid 5473] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5473] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5473] chdir("./file0") = 0 [pid 5473] ioctl(4, LOOP_CLR_FD) = 0 [pid 5473] close(4) = 0 [pid 5473] exit_group(0) = ? [pid 5473] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5473, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./195", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./195", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./195/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./195/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./195/binderfs") = 0 umount2("./195/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./195/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./195/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./195/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./195/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./195/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./195") = 0 mkdir("./196", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5475 ./strace-static-x86_64: Process 5475 attached [pid 5475] chdir("./196") = 0 [pid 5475] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5475] setpgid(0, 0) = 0 [pid 5475] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5475] write(3, "1000", 4) = 4 [pid 5475] close(3) = 0 [pid 5475] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5475] memfd_create("syzkaller", 0) = 3 [pid 5475] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5475] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5475] munmap(0x7f9b27b53000, 262144) = 0 [pid 5475] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5475] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5475] close(3) = 0 [pid 5475] mkdir("./file0", 0777) = 0 [pid 5475] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5475] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5475] chdir("./file0") = 0 [pid 5475] ioctl(4, LOOP_CLR_FD) = 0 [pid 5475] close(4) = 0 [pid 5475] exit_group(0) = ? [pid 5475] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5475, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [ 54.590355][ T5473] loop0: detected capacity change from 0 to 512 [ 54.598000][ T5473] EXT4-fs: Ignoring removed oldalloc option [ 54.604487][ T5473] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 54.614417][ T5473] EXT4-fs (loop0): orphan cleanup on readonly fs [ 54.622265][ T5473] EXT4-fs (loop0): 1 truncate cleaned up restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./196", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./196", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./196/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./196/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./196/binderfs") = 0 umount2("./196/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./196/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./196/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./196/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./196/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./196/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./196") = 0 mkdir("./197", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5477 ./strace-static-x86_64: Process 5477 attached [pid 5477] chdir("./197") = 0 [pid 5477] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5477] setpgid(0, 0) = 0 [pid 5477] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5477] write(3, "1000", 4) = 4 [pid 5477] close(3) = 0 [pid 5477] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5477] memfd_create("syzkaller", 0) = 3 [pid 5477] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5477] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5477] munmap(0x7f9b27b53000, 262144) = 0 [pid 5477] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5477] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5477] close(3) = 0 [pid 5477] mkdir("./file0", 0777) = 0 [ 54.651277][ T5475] loop0: detected capacity change from 0 to 512 [ 54.658857][ T5475] EXT4-fs: Ignoring removed oldalloc option [ 54.665356][ T5475] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 54.675206][ T5475] EXT4-fs (loop0): orphan cleanup on readonly fs [ 54.683520][ T5475] EXT4-fs (loop0): 1 truncate cleaned up [pid 5477] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5477] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5477] chdir("./file0") = 0 [pid 5477] ioctl(4, LOOP_CLR_FD) = 0 [pid 5477] close(4) = 0 [pid 5477] exit_group(0) = ? [pid 5477] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5477, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./197", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./197", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./197/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./197/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./197/binderfs") = 0 umount2("./197/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./197/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./197/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./197/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./197/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./197/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./197") = 0 mkdir("./198", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5479 ./strace-static-x86_64: Process 5479 attached [pid 5479] chdir("./198") = 0 [pid 5479] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5479] setpgid(0, 0) = 0 [pid 5479] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5479] write(3, "1000", 4) = 4 [pid 5479] close(3) = 0 [pid 5479] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5479] memfd_create("syzkaller", 0) = 3 [pid 5479] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5479] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5479] munmap(0x7f9b27b53000, 262144) = 0 [pid 5479] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5479] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5479] close(3) = 0 [pid 5479] mkdir("./file0", 0777) = 0 [pid 5479] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5479] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5479] chdir("./file0") = 0 [pid 5479] ioctl(4, LOOP_CLR_FD) = 0 [pid 5479] close(4) = 0 [ 54.707188][ T5477] loop0: detected capacity change from 0 to 512 [ 54.710009][ T5082] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 54.714503][ T5477] EXT4-fs: Ignoring removed oldalloc option [ 54.729553][ T5477] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 54.739234][ T5477] EXT4-fs (loop0): orphan cleanup on readonly fs [ 54.748131][ T5477] EXT4-fs (loop0): 1 truncate cleaned up [pid 5479] exit_group(0) = ? [pid 5479] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5479, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./198", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./198", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./198/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./198/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./198/binderfs") = 0 umount2("./198/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./198/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./198/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./198/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./198/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./198/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./198") = 0 mkdir("./199", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5481 attached [pid 5481] chdir("./199" [pid 5080] <... clone resumed>, child_tidptr=0x5555559195d0) = 5481 [pid 5481] <... chdir resumed>) = 0 [pid 5481] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5481] setpgid(0, 0) = 0 [pid 5481] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5481] write(3, "1000", 4) = 4 [pid 5481] close(3) = 0 [pid 5481] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5481] memfd_create("syzkaller", 0) = 3 [pid 5481] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5481] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5481] munmap(0x7f9b27b53000, 262144) = 0 [pid 5481] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5481] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5481] close(3) = 0 [pid 5481] mkdir("./file0", 0777) = 0 [pid 5481] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5481] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5481] chdir("./file0") = 0 [pid 5481] ioctl(4, LOOP_CLR_FD) = 0 [pid 5481] close(4) = 0 [pid 5481] exit_group(0) = ? [pid 5481] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5481, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./199", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./199", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./199/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 54.783407][ T5479] loop0: detected capacity change from 0 to 512 [ 54.790720][ T5479] EXT4-fs: Ignoring removed oldalloc option [ 54.797153][ T5479] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 54.806874][ T5479] EXT4-fs (loop0): orphan cleanup on readonly fs [ 54.814911][ T5479] EXT4-fs (loop0): 1 truncate cleaned up lstat("./199/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./199/binderfs") = 0 umount2("./199/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./199/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./199/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./199/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./199/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./199/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./199") = 0 mkdir("./200", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5483 ./strace-static-x86_64: Process 5483 attached [pid 5483] chdir("./200") = 0 [pid 5483] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5483] setpgid(0, 0) = 0 [pid 5483] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5483] write(3, "1000", 4) = 4 [pid 5483] close(3) = 0 [pid 5483] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5483] memfd_create("syzkaller", 0) = 3 [pid 5483] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5483] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5483] munmap(0x7f9b27b53000, 262144) = 0 [pid 5483] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5483] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5483] close(3) = 0 [pid 5483] mkdir("./file0", 0777) = 0 [pid 5483] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5483] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5483] chdir("./file0") = 0 [pid 5483] ioctl(4, LOOP_CLR_FD) = 0 [pid 5483] close(4) = 0 [pid 5483] exit_group(0) = ? [pid 5483] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5483, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./200", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./200", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 [ 54.854634][ T5481] loop0: detected capacity change from 0 to 512 [ 54.862450][ T5481] EXT4-fs: Ignoring removed oldalloc option [ 54.869102][ T5481] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 54.878703][ T5481] EXT4-fs (loop0): orphan cleanup on readonly fs [ 54.886604][ T5481] EXT4-fs (loop0): 1 truncate cleaned up umount2("./200/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./200/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./200/binderfs") = 0 umount2("./200/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./200/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./200/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./200/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./200/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./200/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./200") = 0 mkdir("./201", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5485 ./strace-static-x86_64: Process 5485 attached [pid 5485] chdir("./201") = 0 [pid 5485] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5485] setpgid(0, 0) = 0 [pid 5485] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5485] write(3, "1000", 4) = 4 [pid 5485] close(3) = 0 [pid 5485] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5485] memfd_create("syzkaller", 0) = 3 [pid 5485] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5485] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5485] munmap(0x7f9b27b53000, 262144) = 0 [pid 5485] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5485] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5485] close(3) = 0 [pid 5485] mkdir("./file0", 0777) = 0 [pid 5485] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5485] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5485] chdir("./file0") = 0 [pid 5485] ioctl(4, LOOP_CLR_FD) = 0 [pid 5485] close(4) = 0 [ 54.915533][ T5483] loop0: detected capacity change from 0 to 512 [ 54.923005][ T5483] EXT4-fs: Ignoring removed oldalloc option [ 54.929496][ T5483] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 54.939258][ T5483] EXT4-fs (loop0): orphan cleanup on readonly fs [ 54.946987][ T5483] EXT4-fs (loop0): 1 truncate cleaned up [pid 5485] exit_group(0) = ? [pid 5485] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5485, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- umount2("./201", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./201", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./201/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./201/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./201/binderfs") = 0 umount2("./201/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./201/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./201/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./201/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./201/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./201/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./201") = 0 mkdir("./202", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5487 attached , child_tidptr=0x5555559195d0) = 5487 [pid 5487] chdir("./202") = 0 [pid 5487] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5487] setpgid(0, 0) = 0 [pid 5487] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5487] write(3, "1000", 4) = 4 [pid 5487] close(3) = 0 [pid 5487] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5487] memfd_create("syzkaller", 0) = 3 [pid 5487] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5487] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5487] munmap(0x7f9b27b53000, 262144) = 0 [pid 5487] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5487] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5487] close(3) = 0 [pid 5487] mkdir("./file0", 0777) = 0 [pid 5487] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5487] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5487] chdir("./file0") = 0 [pid 5487] ioctl(4, LOOP_CLR_FD) = 0 [pid 5487] close(4) = 0 [ 54.975597][ T5485] loop0: detected capacity change from 0 to 512 [ 54.983042][ T5485] EXT4-fs: Ignoring removed oldalloc option [ 54.989694][ T5485] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 54.999471][ T5485] EXT4-fs (loop0): orphan cleanup on readonly fs [ 55.007364][ T5485] EXT4-fs (loop0): 1 truncate cleaned up [pid 5487] exit_group(0) = ? [pid 5487] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5487, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./202", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./202", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./202/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./202/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./202/binderfs") = 0 umount2("./202/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./202/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./202/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./202/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./202/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./202/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./202") = 0 mkdir("./203", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5489 ./strace-static-x86_64: Process 5489 attached [pid 5489] chdir("./203") = 0 [pid 5489] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5489] setpgid(0, 0) = 0 [pid 5489] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5489] write(3, "1000", 4) = 4 [pid 5489] close(3) = 0 [pid 5489] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5489] memfd_create("syzkaller", 0) = 3 [pid 5489] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5489] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5489] munmap(0x7f9b27b53000, 262144) = 0 [pid 5489] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5489] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5489] close(3) = 0 [pid 5489] mkdir("./file0", 0777) = 0 [pid 5489] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5489] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5489] chdir("./file0") = 0 [pid 5489] ioctl(4, LOOP_CLR_FD) = 0 [pid 5489] close(4) = 0 [pid 5489] exit_group(0) = ? [pid 5489] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5489, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- umount2("./203", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./203", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./203/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./203/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./203/binderfs") = 0 umount2("./203/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./203/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./203/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [ 55.049320][ T5487] loop0: detected capacity change from 0 to 512 [ 55.057118][ T5487] EXT4-fs: Ignoring removed oldalloc option [ 55.063474][ T5487] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 55.072999][ T5487] EXT4-fs (loop0): orphan cleanup on readonly fs [ 55.080820][ T5487] EXT4-fs (loop0): 1 truncate cleaned up umount2("./203/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./203/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./203/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./203") = 0 mkdir("./204", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5491 attached , child_tidptr=0x5555559195d0) = 5491 [pid 5491] chdir("./204") = 0 [pid 5491] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5491] setpgid(0, 0) = 0 [pid 5491] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5491] write(3, "1000", 4) = 4 [pid 5491] close(3) = 0 [pid 5491] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5491] memfd_create("syzkaller", 0) = 3 [pid 5491] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5491] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5491] munmap(0x7f9b27b53000, 262144) = 0 [pid 5491] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5491] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5491] close(3) = 0 [pid 5491] mkdir("./file0", 0777) = 0 [pid 5491] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5491] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5491] chdir("./file0") = 0 [pid 5491] ioctl(4, LOOP_CLR_FD) = 0 [ 55.109562][ T5489] loop0: detected capacity change from 0 to 512 [ 55.116847][ T5489] EXT4-fs: Ignoring removed oldalloc option [ 55.123188][ T5489] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 55.132735][ T5489] EXT4-fs (loop0): orphan cleanup on readonly fs [ 55.140484][ T5489] EXT4-fs (loop0): 1 truncate cleaned up [pid 5491] close(4) = 0 [pid 5491] exit_group(0) = ? [pid 5491] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5491, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./204", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./204", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./204/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./204/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./204/binderfs") = 0 umount2("./204/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./204/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./204/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./204/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./204/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./204/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./204") = 0 mkdir("./205", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5493 ./strace-static-x86_64: Process 5493 attached [pid 5493] chdir("./205") = 0 [pid 5493] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5493] setpgid(0, 0) = 0 [pid 5493] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5493] write(3, "1000", 4) = 4 [pid 5493] close(3) = 0 [pid 5493] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5493] memfd_create("syzkaller", 0) = 3 [pid 5493] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5493] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5493] munmap(0x7f9b27b53000, 262144) = 0 [pid 5493] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5493] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5493] close(3) = 0 [pid 5493] mkdir("./file0", 0777) = 0 [pid 5493] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5493] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5493] chdir("./file0") = 0 [pid 5493] ioctl(4, LOOP_CLR_FD) = 0 [ 55.172015][ T5491] loop0: detected capacity change from 0 to 512 [ 55.179564][ T5491] EXT4-fs: Ignoring removed oldalloc option [ 55.185937][ T5491] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 55.195497][ T5491] EXT4-fs (loop0): orphan cleanup on readonly fs [ 55.203520][ T5491] EXT4-fs (loop0): 1 truncate cleaned up [pid 5493] close(4) = 0 [pid 5493] exit_group(0) = ? [pid 5493] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5493, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./205", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./205", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./205/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./205/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./205/binderfs") = 0 umount2("./205/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./205/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./205/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./205/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./205/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./205/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./205") = 0 mkdir("./206", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5495 ./strace-static-x86_64: Process 5495 attached [pid 5495] chdir("./206") = 0 [pid 5495] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5495] setpgid(0, 0) = 0 [pid 5495] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5495] write(3, "1000", 4) = 4 [pid 5495] close(3) = 0 [pid 5495] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5495] memfd_create("syzkaller", 0) = 3 [pid 5495] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5495] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5495] munmap(0x7f9b27b53000, 262144) = 0 [pid 5495] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5495] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5495] close(3) = 0 [pid 5495] mkdir("./file0", 0777) = 0 [pid 5495] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6f\x6c\x64\x61\x6c\x6c\x6f\x63\x2c\x75\x73\x72\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x65\x72\x72\x6f\x72\x73\x3d\x72\x65\x6d\x6f\x75\x6e\x74\x2d\x72\x6f\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73"...) = 0 [pid 5495] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5495] chdir("./file0") = 0 [pid 5495] ioctl(4, LOOP_CLR_FD) = 0 [pid 5495] close(4) = 0 [pid 5495] exit_group(0) = ? [ 55.231604][ T5493] loop0: detected capacity change from 0 to 512 [ 55.239713][ T5493] EXT4-fs: Ignoring removed oldalloc option [ 55.246367][ T5493] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled [ 55.256052][ T5493] EXT4-fs (loop0): orphan cleanup on readonly fs [ 55.264213][ T5493] EXT4-fs (loop0): 1 truncate cleaned up [pid 5495] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5495, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./206", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./206", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(3, 0x55555591a620 /* 4 entries */, 32768) = 112 umount2("./206/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./206/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 unlink("./206/binderfs") = 0 umount2("./206/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./206/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) lstat("./206/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 umount2("./206/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./206/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getdents64(4, 0x555555922660 /* 2 entries */, 32768) = 48 getdents64(4, 0x555555922660 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./206/file0") = 0 getdents64(3, 0x55555591a620 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./206") = 0 mkdir("./207", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555559195d0) = 5497 ./strace-static-x86_64: Process 5497 attached [pid 5497] chdir("./207") = 0 [pid 5497] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5497] setpgid(0, 0) = 0 [pid 5497] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5497] write(3, "1000", 4) = 4 [pid 5497] close(3) = 0 [pid 5497] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5497] memfd_create("syzkaller", 0) = 3 [pid 5497] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b27b53000 [pid 5497] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5497] munmap(0x7f9b27b53000, 262144) = 0 [pid 5497] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4