./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor622231585 <...> Warning: Permanently added '10.128.0.205' (ED25519) to the list of known hosts. execve("./syz-executor622231585", ["./syz-executor622231585"], 0x7fffeaee8870 /* 10 vars */) = 0 brk(NULL) = 0x5555564d7000 brk(0x5555564d7d00) = 0x5555564d7d00 arch_prctl(ARCH_SET_FS, 0x5555564d7380) = 0 set_tid_address(0x5555564d7650) = 5062 set_robust_list(0x5555564d7660, 24) = 0 rseq(0x5555564d7ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor622231585", 4096) = 27 getrandom("\xfc\x5b\x1e\x86\x78\xae\x81\x10", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555564d7d00 brk(0x5555564f8d00) = 0x5555564f8d00 brk(0x5555564f9000) = 0x5555564f9000 mprotect(0x7f3b7df0d000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 mkdir("./syzkaller.wtIptx", 0700) = 0 chmod("./syzkaller.wtIptx", 0777) = 0 chdir("./syzkaller.wtIptx") = 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) [ 78.525164][ T27] audit: type=1400 audit(1704035640.397:83): avc: denied { execmem } for pid=5062 comm="syz-executor622" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564d7650) = 5063 ./strace-static-x86_64: Process 5063 attached [pid 5063] set_robust_list(0x5555564d7660, 24) = 0 [pid 5063] chdir("./0") = 0 [pid 5063] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5063] setpgid(0, 0) = 0 [pid 5063] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5063] write(3, "1000", 4) = 4 [pid 5063] close(3) = 0 [pid 5063] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5063] memfd_create("syzkaller", 0) = 3 [pid 5063] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [ 78.563117][ T27] audit: type=1400 audit(1704035640.437:84): avc: denied { read write } for pid=5062 comm="syz-executor622" name="loop0" dev="devtmpfs" ino=648 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 78.589254][ T27] audit: type=1400 audit(1704035640.437:85): avc: denied { open } for pid=5062 comm="syz-executor622" path="/dev/loop0" dev="devtmpfs" ino=648 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [pid 5063] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5063] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5063] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5063] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5063] close(3) = 0 [pid 5063] mkdir("./file1", 0777) = 0 [ 78.615245][ T27] audit: type=1400 audit(1704035640.437:86): avc: denied { ioctl } for pid=5062 comm="syz-executor622" path="/dev/loop0" dev="devtmpfs" ino=648 ioctlcmd=0x4c01 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 78.646720][ T5063] loop0: detected capacity change from 0 to 512 [ 78.681782][ T27] audit: type=1400 audit(1704035640.557:87): avc: denied { mounton } for pid=5063 comm="syz-executor622" path="/root/syzkaller.wtIptx/0/file1" dev="sda1" ino=1930 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 78.707443][ T5063] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [pid 5063] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5063] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5063] chdir("./file1") = 0 [pid 5063] ioctl(4, LOOP_CLR_FD) = 0 [ 78.727950][ T5063] EXT4-fs (loop0): 1 truncate cleaned up [ 78.733726][ T5063] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 78.747976][ T27] audit: type=1400 audit(1704035640.627:88): avc: denied { mount } for pid=5063 comm="syz-executor622" name="/" dev="loop0" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1 [pid 5063] close(4) = 0 [pid 5063] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5063] creat("./file1", 0410) = 4 [ 78.783720][ T27] audit: type=1400 audit(1704035640.657:89): avc: denied { write } for pid=5063 comm="syz-executor622" name="file1" dev="loop0" ino=15 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=file permissive=1 [ 78.808114][ T27] audit: type=1400 audit(1704035640.657:90): avc: denied { setattr } for pid=5063 comm="syz-executor622" name="file1" dev="loop0" ino=15 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=file permissive=1 [pid 5063] exit_group(0) = ? [pid 5063] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5063, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./0/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./0/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./0/binderfs") = 0 [ 78.832224][ T27] audit: type=1400 audit(1704035640.687:91): avc: denied { open } for pid=5063 comm="syz-executor622" path="/root/syzkaller.wtIptx/0/file1/file1" dev="loop0" ino=15 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=file permissive=1 umount2("./0/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./0/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./0/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [ 78.874314][ T27] audit: type=1400 audit(1704035640.747:92): avc: denied { unmount } for pid=5062 comm="syz-executor622" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1 [ 78.887770][ T5062] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. umount2("./0/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./0/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./0/file1") = 0 getdents64(3, 0x5555564d86f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./0") = 0 mkdir("./1", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5067 attached , child_tidptr=0x5555564d7650) = 5067 [pid 5067] set_robust_list(0x5555564d7660, 24) = 0 [pid 5067] chdir("./1") = 0 [pid 5067] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5067] setpgid(0, 0) = 0 [pid 5067] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5067] write(3, "1000", 4) = 4 [pid 5067] close(3) = 0 [pid 5067] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5067] memfd_create("syzkaller", 0) = 3 [pid 5067] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5067] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5067] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5067] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5067] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5067] close(3) = 0 [pid 5067] mkdir("./file1", 0777) = 0 [ 79.137669][ T5067] loop0: detected capacity change from 0 to 512 [ 79.158990][ T5067] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 79.175584][ T5067] EXT4-fs (loop0): 1 truncate cleaned up [pid 5067] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5067] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5067] chdir("./file1") = 0 [pid 5067] ioctl(4, LOOP_CLR_FD) = 0 [pid 5067] close(4) = 0 [pid 5067] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5067] creat("./file1", 0410) = 4 [pid 5067] exit_group(0) = ? [pid 5067] +++ exited with 0 +++ [ 79.181426][ T5067] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5067, 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 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./1/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./1/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./1/binderfs") = 0 umount2("./1/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./1/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./1/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./1/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./1/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [ 79.320700][ T5062] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./1/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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./strace-static-x86_64: Process 5069 attached , child_tidptr=0x5555564d7650) = 5069 [pid 5069] set_robust_list(0x5555564d7660, 24) = 0 [pid 5069] chdir("./2") = 0 [pid 5069] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5069] setpgid(0, 0) = 0 [pid 5069] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5069] write(3, "1000", 4) = 4 [pid 5069] close(3) = 0 [pid 5069] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5069] memfd_create("syzkaller", 0) = 3 [pid 5069] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5069] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5069] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5069] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5069] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5069] close(3) = 0 [pid 5069] mkdir("./file1", 0777) = 0 [ 79.565234][ T5069] loop0: detected capacity change from 0 to 512 [ 79.586380][ T5069] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 79.602919][ T5069] EXT4-fs (loop0): 1 truncate cleaned up [pid 5069] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5069] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5069] chdir("./file1") = 0 [pid 5069] ioctl(4, LOOP_CLR_FD) = 0 [pid 5069] close(4) = 0 [pid 5069] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5069] creat("./file1", 0410) = 4 [pid 5069] exit_group(0) = ? [pid 5069] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5069, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [ 79.608590][ T5069] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./2/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./2/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./2/binderfs") = 0 umount2("./2/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./2/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./2/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./2/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./2/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./2/file1") = 0 getdents64(3, 0x5555564d86f0 /* 0 entries */, 32768) = 0 [ 79.698834][ T5062] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. close(3) = 0 rmdir("./2") = 0 mkdir("./3", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5071 attached , child_tidptr=0x5555564d7650) = 5071 [pid 5071] set_robust_list(0x5555564d7660, 24) = 0 [pid 5071] chdir("./3") = 0 [pid 5071] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5071] setpgid(0, 0) = 0 [pid 5071] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5071] write(3, "1000", 4) = 4 [pid 5071] close(3) = 0 [pid 5071] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5071] memfd_create("syzkaller", 0) = 3 [pid 5071] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5071] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5071] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5071] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5071] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5071] close(3) = 0 [pid 5071] mkdir("./file1", 0777) = 0 [ 79.944110][ T5071] loop0: detected capacity change from 0 to 512 [ 79.964539][ T5071] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 79.981710][ T5071] EXT4-fs (loop0): 1 truncate cleaned up [pid 5071] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5071] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5071] chdir("./file1") = 0 [pid 5071] ioctl(4, LOOP_CLR_FD) = 0 [pid 5071] close(4) = 0 [pid 5071] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5071] creat("./file1", 0410) = 4 [ 79.987516][ T5071] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5071] exit_group(0) = ? [pid 5071] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5071, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./3", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./3", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./3/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./3/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./3/binderfs") = 0 umount2("./3/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./3/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./3/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [ 80.133874][ T5062] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. umount2("./3/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./3/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./3/file1") = 0 getdents64(3, 0x5555564d86f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./3") = 0 mkdir("./4", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5073 attached , child_tidptr=0x5555564d7650) = 5073 [pid 5073] set_robust_list(0x5555564d7660, 24) = 0 [pid 5073] chdir("./4") = 0 [pid 5073] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5073] setpgid(0, 0) = 0 [pid 5073] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5073] write(3, "1000", 4) = 4 [pid 5073] close(3) = 0 [pid 5073] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5073] memfd_create("syzkaller", 0) = 3 [pid 5073] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5073] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5073] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5073] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5073] close(3) = 0 [pid 5073] mkdir("./file1", 0777) = 0 [ 80.335944][ T5073] loop0: detected capacity change from 0 to 512 [ 80.356126][ T5073] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 80.372544][ T5073] EXT4-fs (loop0): 1 truncate cleaned up [pid 5073] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5073] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5073] chdir("./file1") = 0 [pid 5073] ioctl(4, LOOP_CLR_FD) = 0 [pid 5073] close(4) = 0 [pid 5073] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [ 80.378442][ T5073] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5073] creat("./file1", 0410) = 4 [pid 5073] exit_group(0) = ? [pid 5073] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5073, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./4", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./4", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./4/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./4/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./4/binderfs") = 0 umount2("./4/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./4/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./4/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./4/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./4/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 [ 80.569637][ T5062] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./4/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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./strace-static-x86_64: Process 5075 attached , child_tidptr=0x5555564d7650) = 5075 [pid 5075] set_robust_list(0x5555564d7660, 24) = 0 [pid 5075] chdir("./5") = 0 [pid 5075] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5075] setpgid(0, 0) = 0 [pid 5075] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5075] write(3, "1000", 4) = 4 [pid 5075] close(3) = 0 [pid 5075] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5075] memfd_create("syzkaller", 0) = 3 [pid 5075] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5075] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5075] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5075] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5075] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5075] close(3) = 0 [pid 5075] mkdir("./file1", 0777) = 0 [ 80.787924][ T5075] loop0: detected capacity change from 0 to 512 [ 80.812817][ T5075] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 80.828858][ T5075] EXT4-fs (loop0): 1 truncate cleaned up [pid 5075] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5075] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5075] chdir("./file1") = 0 [pid 5075] ioctl(4, LOOP_CLR_FD) = 0 [pid 5075] close(4) = 0 [ 80.835037][ T5075] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5075] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5075] creat("./file1", 0410) = 4 [pid 5075] exit_group(0) = ? [pid 5075] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5075, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./5", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./5", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./5/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./5/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./5/binderfs") = 0 umount2("./5/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./5/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./5/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./5/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 80.980605][ T5062] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. openat(AT_FDCWD, "./5/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./5/file1") = 0 getdents64(3, 0x5555564d86f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./5") = 0 mkdir("./6", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5077 attached [pid 5077] set_robust_list(0x5555564d7660, 24) = 0 [pid 5062] <... clone resumed>, child_tidptr=0x5555564d7650) = 5077 [pid 5077] chdir("./6") = 0 [pid 5077] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5077] setpgid(0, 0) = 0 [pid 5077] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5077] write(3, "1000", 4) = 4 [pid 5077] close(3) = 0 [pid 5077] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5077] memfd_create("syzkaller", 0) = 3 [pid 5077] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5077] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5077] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5077] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5077] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5077] close(3) = 0 [pid 5077] mkdir("./file1", 0777) = 0 [pid 5077] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5077] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5077] chdir("./file1") = 0 [pid 5077] ioctl(4, LOOP_CLR_FD) = 0 [pid 5077] close(4) = 0 [ 81.188266][ T5077] loop0: detected capacity change from 0 to 512 [ 81.198491][ T5077] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 81.214898][ T5077] EXT4-fs (loop0): 1 truncate cleaned up [ 81.220689][ T5077] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5077] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5077] creat("./file1", 0410) = 4 [pid 5077] exit_group(0) = ? [pid 5077] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5077, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./6", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./6", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./6/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./6/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./6/binderfs") = 0 umount2("./6/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./6/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./6/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./6/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 81.311229][ T5062] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. openat(AT_FDCWD, "./6/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./6/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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./strace-static-x86_64: Process 5079 attached [pid 5079] set_robust_list(0x5555564d7660, 24 [pid 5062] <... clone resumed>, child_tidptr=0x5555564d7650) = 5079 [pid 5079] <... set_robust_list resumed>) = 0 [pid 5079] chdir("./7") = 0 [pid 5079] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5079] setpgid(0, 0) = 0 [pid 5079] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5079] write(3, "1000", 4) = 4 [pid 5079] close(3) = 0 [pid 5079] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5079] memfd_create("syzkaller", 0) = 3 [pid 5079] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5079] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5079] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5079] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5079] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5079] close(3) = 0 [pid 5079] mkdir("./file1", 0777) = 0 [pid 5079] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [ 81.540392][ T5079] loop0: detected capacity change from 0 to 512 [ 81.555679][ T5079] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 81.572317][ T5079] EXT4-fs (loop0): 1 truncate cleaned up [ 81.578119][ T5079] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5079] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5079] chdir("./file1") = 0 [pid 5079] ioctl(4, LOOP_CLR_FD) = 0 [pid 5079] close(4) = 0 [pid 5079] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5079] creat("./file1", 0410) = 4 [pid 5079] exit_group(0) = ? [pid 5079] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5079, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./7", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./7", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./7/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./7/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./7/binderfs") = 0 umount2("./7/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./7/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./7/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./7/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./7/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [ 81.684442][ T5062] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./7/file1") = 0 getdents64(3, 0x5555564d86f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./7") = 0 mkdir("./8", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5081 attached , child_tidptr=0x5555564d7650) = 5081 [pid 5081] set_robust_list(0x5555564d7660, 24) = 0 [pid 5081] chdir("./8") = 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) = 0x7f3b75a5a000 [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(0x7f3b75a5a000, 138412032) = 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("./file1", 0777) = 0 [ 81.925997][ T5081] loop0: detected capacity change from 0 to 512 [ 81.942289][ T5081] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 81.958030][ T5081] EXT4-fs (loop0): 1 truncate cleaned up [pid 5081] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5081] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5081] chdir("./file1") = 0 [pid 5081] ioctl(4, LOOP_CLR_FD) = 0 [pid 5081] close(4) = 0 [ 81.964017][ T5081] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5081] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5081] creat("./file1", 0410) = 4 [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=5 /* 0.05 s */} --- umount2("./8", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./8", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./8/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./8/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./8/binderfs") = 0 umount2("./8/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./8/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./8/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./8/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 82.094835][ T5062] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. openat(AT_FDCWD, "./8/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./8/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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=0x5555564d7650) = 5083 ./strace-static-x86_64: Process 5083 attached [pid 5083] set_robust_list(0x5555564d7660, 24) = 0 [pid 5083] chdir("./9") = 0 [pid 5083] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5083] setpgid(0, 0) = 0 [pid 5083] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5083] write(3, "1000", 4) = 4 [pid 5083] close(3) = 0 [pid 5083] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5083] memfd_create("syzkaller", 0) = 3 [pid 5083] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5083] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5083] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5083] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5083] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5083] close(3) = 0 [pid 5083] mkdir("./file1", 0777) = 0 [ 82.351126][ T5083] loop0: detected capacity change from 0 to 512 [ 82.385859][ T5083] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [pid 5083] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5083] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5083] chdir("./file1") = 0 [pid 5083] ioctl(4, LOOP_CLR_FD) = 0 [ 82.408600][ T5083] EXT4-fs (loop0): 1 truncate cleaned up [ 82.414654][ T5083] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5083] close(4) = 0 [pid 5083] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5083] creat("./file1", 0410) = 4 [pid 5083] exit_group(0) = ? [pid 5083] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5083, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./9", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./9", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./9/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./9/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./9/binderfs") = 0 umount2("./9/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./9/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./9/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./9/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 82.552960][ T5062] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. openat(AT_FDCWD, "./9/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./9/file1") = 0 getdents64(3, 0x5555564d86f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./9") = 0 mkdir("./10", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5086 attached , child_tidptr=0x5555564d7650) = 5086 [pid 5086] set_robust_list(0x5555564d7660, 24) = 0 [pid 5086] chdir("./10") = 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) = 0x7f3b75a5a000 [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(0x7f3b75a5a000, 138412032) = 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("./file1", 0777) = 0 [ 82.759478][ T5086] loop0: detected capacity change from 0 to 512 [ 82.775072][ T5086] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 82.791908][ T5086] EXT4-fs (loop0): 1 truncate cleaned up [pid 5086] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5086] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5086] chdir("./file1") = 0 [pid 5086] ioctl(4, LOOP_CLR_FD) = 0 [pid 5086] close(4) = 0 [pid 5086] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [ 82.797618][ T5086] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5086] creat("./file1", 0410) = 4 [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=4 /* 0.04 s */} --- umount2("./10", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./10", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./10/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./10/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./10/binderfs") = 0 umount2("./10/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./10/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./10/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./10/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./10/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [ 82.885431][ T5062] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./10/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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./strace-static-x86_64: Process 5089 attached [pid 5089] set_robust_list(0x5555564d7660, 24 [pid 5062] <... clone resumed>, child_tidptr=0x5555564d7650) = 5089 [pid 5089] <... set_robust_list resumed>) = 0 [pid 5089] chdir("./11") = 0 [pid 5089] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5089] setpgid(0, 0) = 0 [pid 5089] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5089] write(3, "1000", 4) = 4 [pid 5089] close(3) = 0 [pid 5089] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5089] memfd_create("syzkaller", 0) = 3 [pid 5089] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5089] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5089] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5089] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5089] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5089] close(3) = 0 [pid 5089] mkdir("./file1", 0777) = 0 [ 83.110303][ T5089] loop0: detected capacity change from 0 to 512 [ 83.135996][ T5089] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 83.152566][ T5089] EXT4-fs (loop0): 1 truncate cleaned up [pid 5089] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5089] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5089] chdir("./file1") = 0 [pid 5089] ioctl(4, LOOP_CLR_FD) = 0 [pid 5089] close(4) = 0 [pid 5089] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5089] creat("./file1", 0410) = 4 [pid 5089] exit_group(0) = ? [pid 5089] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5089, 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 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [ 83.158226][ T5089] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./11/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./11/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./11/binderfs") = 0 umount2("./11/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./11/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./11/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./11/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./11/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 [ 83.254327][ T5062] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./11/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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./strace-static-x86_64: Process 5091 attached , child_tidptr=0x5555564d7650) = 5091 [pid 5091] set_robust_list(0x5555564d7660, 24) = 0 [pid 5091] chdir("./12") = 0 [pid 5091] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5091] setpgid(0, 0) = 0 [pid 5091] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5091] write(3, "1000", 4) = 4 [pid 5091] close(3) = 0 [pid 5091] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5091] memfd_create("syzkaller", 0) = 3 [pid 5091] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5091] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5091] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5091] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5091] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5091] close(3) = 0 [pid 5091] mkdir("./file1", 0777) = 0 [ 83.447758][ T5091] loop0: detected capacity change from 0 to 512 [ 83.472903][ T5091] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 83.488589][ T5091] EXT4-fs (loop0): 1 truncate cleaned up [pid 5091] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5091] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5091] chdir("./file1") = 0 [pid 5091] ioctl(4, LOOP_CLR_FD) = 0 [pid 5091] close(4) = 0 [pid 5091] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [ 83.494834][ T5091] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5091] creat("./file1", 0410) = 4 [pid 5091] exit_group(0) = ? [pid 5091] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5091, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./12", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./12", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./12/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./12/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./12/binderfs") = 0 umount2("./12/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./12/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./12/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./12/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./12/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [ 83.632674][ T5062] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./12/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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./strace-static-x86_64: Process 5093 attached , child_tidptr=0x5555564d7650) = 5093 [pid 5093] set_robust_list(0x5555564d7660, 24) = 0 [pid 5093] chdir("./13") = 0 [pid 5093] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5093] setpgid(0, 0) = 0 [pid 5093] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5093] write(3, "1000", 4) = 4 [pid 5093] close(3) = 0 [pid 5093] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5093] memfd_create("syzkaller", 0) = 3 [pid 5093] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5093] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5093] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5093] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5093] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5093] close(3) = 0 [pid 5093] mkdir("./file1", 0777) = 0 [ 83.825036][ T5093] loop0: detected capacity change from 0 to 512 [ 83.839579][ T5093] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 83.866224][ T5093] EXT4-fs (loop0): 1 truncate cleaned up [pid 5093] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5093] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5093] chdir("./file1") = 0 [pid 5093] ioctl(4, LOOP_CLR_FD) = 0 [pid 5093] close(4) = 0 [pid 5093] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5093] creat("./file1", 0410) = 4 [pid 5093] exit_group(0) = ? [pid 5093] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5093, 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 [ 83.872065][ T5093] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./13/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./13/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./13/binderfs") = 0 umount2("./13/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./13/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./13/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./13/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./13/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [ 84.007539][ T5062] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./13/file1") = 0 getdents64(3, 0x5555564d86f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./13") = 0 mkdir("./14", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5095 attached [pid 5095] set_robust_list(0x5555564d7660, 24) = 0 [pid 5095] chdir("./14" [pid 5062] <... clone resumed>, child_tidptr=0x5555564d7650) = 5095 [pid 5095] <... chdir resumed>) = 0 [pid 5095] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5095] setpgid(0, 0) = 0 [pid 5095] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5095] write(3, "1000", 4) = 4 [pid 5095] close(3) = 0 [pid 5095] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5095] memfd_create("syzkaller", 0) = 3 [pid 5095] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5095] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5095] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5095] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5095] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5095] close(3) = 0 [pid 5095] mkdir("./file1", 0777) = 0 [pid 5095] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5095] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5095] chdir("./file1") = 0 [pid 5095] ioctl(4, LOOP_CLR_FD) = 0 [pid 5095] close(4) = 0 [ 84.250913][ T5095] loop0: detected capacity change from 0 to 512 [ 84.262536][ T5095] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 84.278947][ T5095] EXT4-fs (loop0): 1 truncate cleaned up [ 84.285101][ T5095] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5095] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5095] creat("./file1", 0410) = 4 [pid 5095] exit_group(0) = ? [pid 5095] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5095, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./14", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./14", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./14/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./14/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./14/binderfs") = 0 umount2("./14/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./14/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./14/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./14/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./14/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [ 84.437727][ T5062] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./14/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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./strace-static-x86_64: Process 5097 attached , child_tidptr=0x5555564d7650) = 5097 [pid 5097] set_robust_list(0x5555564d7660, 24) = 0 [pid 5097] chdir("./15") = 0 [pid 5097] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5097] setpgid(0, 0) = 0 [pid 5097] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5097] write(3, "1000", 4) = 4 [pid 5097] close(3) = 0 [pid 5097] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5097] memfd_create("syzkaller", 0) = 3 [pid 5097] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5097] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5097] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5097] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5097] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5097] close(3) = 0 [pid 5097] mkdir("./file1", 0777) = 0 [pid 5097] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5097] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5097] chdir("./file1") = 0 [pid 5097] ioctl(4, LOOP_CLR_FD) = 0 [pid 5097] close(4) = 0 [ 84.624752][ T5097] loop0: detected capacity change from 0 to 512 [ 84.637354][ T5097] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 84.653519][ T5097] EXT4-fs (loop0): 1 truncate cleaned up [ 84.659400][ T5097] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5097] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5097] creat("./file1", 0410) = 4 [pid 5097] exit_group(0) = ? [pid 5097] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5097, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./15", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./15", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./15/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./15/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./15/binderfs") = 0 umount2("./15/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./15/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./15/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./15/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 84.801347][ T5062] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. openat(AT_FDCWD, "./15/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./15/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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./strace-static-x86_64: Process 5099 attached , child_tidptr=0x5555564d7650) = 5099 [pid 5099] set_robust_list(0x5555564d7660, 24) = 0 [pid 5099] chdir("./16") = 0 [pid 5099] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5099] setpgid(0, 0) = 0 [pid 5099] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5099] write(3, "1000", 4) = 4 [pid 5099] close(3) = 0 [pid 5099] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5099] memfd_create("syzkaller", 0) = 3 [pid 5099] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5099] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5099] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5099] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5099] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5099] close(3) = 0 [pid 5099] mkdir("./file1", 0777) = 0 [pid 5099] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5099] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5099] chdir("./file1") = 0 [pid 5099] ioctl(4, LOOP_CLR_FD) = 0 [pid 5099] close(4) = 0 [ 85.052390][ T5099] loop0: detected capacity change from 0 to 512 [ 85.065611][ T5099] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 85.081879][ T5099] EXT4-fs (loop0): 1 truncate cleaned up [ 85.087641][ T5099] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5099] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5099] creat("./file1", 0410) = 4 [pid 5099] exit_group(0) = ? [pid 5099] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5099, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./16", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./16", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./16/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./16/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./16/binderfs") = 0 umount2("./16/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./16/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./16/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./16/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./16/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./16/file1") = 0 getdents64(3, 0x5555564d86f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./16") = 0 mkdir("./17", 0777) = 0 [ 85.221753][ T5062] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_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 5102 attached , child_tidptr=0x5555564d7650) = 5102 [pid 5102] set_robust_list(0x5555564d7660, 24) = 0 [pid 5102] chdir("./17") = 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) = 0x7f3b75a5a000 [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(0x7f3b75a5a000, 138412032) = 0 [pid 5102] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5102] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5102] close(3) = 0 [pid 5102] mkdir("./file1", 0777) = 0 [ 85.378407][ T5102] loop0: detected capacity change from 0 to 512 [ 85.406305][ T5102] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [pid 5102] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5102] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5102] chdir("./file1") = 0 [pid 5102] ioctl(4, LOOP_CLR_FD) = 0 [pid 5102] close(4) = 0 [pid 5102] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5102] creat("./file1", 0410) = 4 [pid 5102] exit_group(0) = ? [ 85.422435][ T5102] EXT4-fs (loop0): 1 truncate cleaned up [ 85.430657][ T5102] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [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=6 /* 0.06 s */} --- umount2("./17", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./17", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./17/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./17/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./17/binderfs") = 0 umount2("./17/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./17/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./17/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./17/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 85.526143][ T5062] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. openat(AT_FDCWD, "./17/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./17/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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./strace-static-x86_64: Process 5104 attached , child_tidptr=0x5555564d7650) = 5104 [pid 5104] set_robust_list(0x5555564d7660, 24) = 0 [pid 5104] chdir("./18") = 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) = 0x7f3b75a5a000 [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(0x7f3b75a5a000, 138412032) = 0 [pid 5104] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5104] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5104] close(3) = 0 [pid 5104] mkdir("./file1", 0777) = 0 [pid 5104] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5104] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5104] chdir("./file1") = 0 [pid 5104] ioctl(4, LOOP_CLR_FD) = 0 [pid 5104] close(4) = 0 [ 85.840130][ T5104] loop0: detected capacity change from 0 to 512 [ 85.855748][ T5104] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 85.871225][ T5104] EXT4-fs (loop0): 1 truncate cleaned up [ 85.877157][ T5104] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5104] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5104] creat("./file1", 0410) = 4 [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=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./18", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./18", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./18/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./18/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./18/binderfs") = 0 umount2("./18/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./18/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./18/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./18/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./18/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [ 85.997481][ T5062] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./18/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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 5106 attached , child_tidptr=0x5555564d7650) = 5106 [pid 5106] set_robust_list(0x5555564d7660, 24) = 0 [pid 5106] chdir("./19") = 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) = 0x7f3b75a5a000 [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(0x7f3b75a5a000, 138412032) = 0 [pid 5106] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5106] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5106] close(3) = 0 [pid 5106] mkdir("./file1", 0777) = 0 [ 86.220265][ T5106] loop0: detected capacity change from 0 to 512 [ 86.249412][ T5106] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [pid 5106] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5106] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5106] chdir("./file1") = 0 [pid 5106] ioctl(4, LOOP_CLR_FD) = 0 [pid 5106] close(4) = 0 [pid 5106] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5106] creat("./file1", 0410) = 4 [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=3 /* 0.03 s */} --- umount2("./19", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./19", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [ 86.265819][ T5106] EXT4-fs (loop0): 1 truncate cleaned up [ 86.271681][ T5106] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./19/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./19/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./19/binderfs") = 0 umount2("./19/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./19/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./19/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./19/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./19/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [ 86.389661][ T5062] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./19/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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./strace-static-x86_64: Process 5108 attached , child_tidptr=0x5555564d7650) = 5108 [pid 5108] set_robust_list(0x5555564d7660, 24) = 0 [pid 5108] chdir("./20") = 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) = 0x7f3b75a5a000 [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(0x7f3b75a5a000, 138412032) = 0 [pid 5108] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5108] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5108] close(3) = 0 [pid 5108] mkdir("./file1", 0777) = 0 [ 86.579219][ T5108] loop0: detected capacity change from 0 to 512 [ 86.604275][ T5108] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 86.621216][ T5108] EXT4-fs (loop0): 1 truncate cleaned up [pid 5108] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5108] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5108] chdir("./file1") = 0 [pid 5108] ioctl(4, LOOP_CLR_FD) = 0 [pid 5108] close(4) = 0 [pid 5108] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5108] creat("./file1", 0410) = 4 [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 */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 [ 86.626876][ T5108] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. umount2("./20", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./20", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./20/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./20/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./20/binderfs") = 0 umount2("./20/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./20/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./20/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./20/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./20/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [ 86.756930][ T5062] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./20/file1") = 0 getdents64(3, 0x5555564d86f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./20") = 0 mkdir("./21", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5110 attached , child_tidptr=0x5555564d7650) = 5110 [pid 5110] set_robust_list(0x5555564d7660, 24) = 0 [pid 5110] chdir("./21") = 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) = 0x7f3b75a5a000 [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(0x7f3b75a5a000, 138412032) = 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("./file1", 0777) = 0 [pid 5110] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5110] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5110] chdir("./file1") = 0 [pid 5110] ioctl(4, LOOP_CLR_FD) = 0 [pid 5110] close(4) = 0 [pid 5110] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5110] creat("./file1", 0410) = 4 [pid 5110] exit_group(0) = ? [ 86.949845][ T5110] loop0: detected capacity change from 0 to 512 [ 86.964498][ T5110] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 86.980684][ T5110] EXT4-fs (loop0): 1 truncate cleaned up [ 86.986473][ T5110] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [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=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 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./21/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./21/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./21/binderfs") = 0 umount2("./21/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./21/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./21/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./21/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./21/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 [ 87.064571][ T5062] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. rmdir("./21/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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./strace-static-x86_64: Process 5112 attached , child_tidptr=0x5555564d7650) = 5112 [pid 5112] set_robust_list(0x5555564d7660, 24) = 0 [pid 5112] chdir("./22") = 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) = 0x7f3b75a5a000 [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(0x7f3b75a5a000, 138412032) = 0 [pid 5112] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5112] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5112] close(3) = 0 [pid 5112] mkdir("./file1", 0777) = 0 [ 87.252354][ T922] cfg80211: failed to load regulatory.db [ 87.259236][ T5112] loop0: detected capacity change from 0 to 512 [pid 5112] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5112] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5112] chdir("./file1") = 0 [pid 5112] ioctl(4, LOOP_CLR_FD) = 0 [pid 5112] close(4) = 0 [pid 5112] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5112] creat("./file1", 0410) = 4 [ 87.291836][ T5112] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 87.308509][ T5112] EXT4-fs (loop0): 1 truncate cleaned up [ 87.314279][ T5112] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [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=5 /* 0.05 s */} --- umount2("./22", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./22", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./22/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./22/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./22/binderfs") = 0 umount2("./22/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./22/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./22/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./22/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./22/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 [ 87.427257][ T5062] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. close(4) = 0 rmdir("./22/file1") = 0 getdents64(3, 0x5555564d86f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./22") = 0 mkdir("./23", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5114 attached , child_tidptr=0x5555564d7650) = 5114 [pid 5114] set_robust_list(0x5555564d7660, 24) = 0 [pid 5114] chdir("./23") = 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) = 0x7f3b75a5a000 [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(0x7f3b75a5a000, 138412032) = 0 [pid 5114] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5114] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5114] close(3) = 0 [pid 5114] mkdir("./file1", 0777) = 0 [ 87.629093][ T5114] loop0: detected capacity change from 0 to 512 [ 87.649182][ T5114] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 87.664841][ T5114] EXT4-fs (loop0): 1 truncate cleaned up [pid 5114] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5114] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5114] chdir("./file1") = 0 [pid 5114] ioctl(4, LOOP_CLR_FD) = 0 [pid 5114] close(4) = 0 [ 87.670662][ T5114] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5114] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5114] creat("./file1", 0410) = 4 [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=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 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./23/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./23/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./23/binderfs") = 0 umount2("./23/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./23/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./23/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./23/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./23/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [ 87.805678][ T5062] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./23/file1") = 0 getdents64(3, 0x5555564d86f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./23") = 0 mkdir("./24", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5116 attached , child_tidptr=0x5555564d7650) = 5116 [pid 5116] set_robust_list(0x5555564d7660, 24) = 0 [pid 5116] chdir("./24") = 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) = 0x7f3b75a5a000 [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(0x7f3b75a5a000, 138412032) = 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("./file1", 0777) = 0 [ 88.000720][ T5116] loop0: detected capacity change from 0 to 512 [ 88.026552][ T5116] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 88.044836][ T5116] EXT4-fs (loop0): 1 truncate cleaned up [pid 5116] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5116] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5116] chdir("./file1") = 0 [pid 5116] ioctl(4, LOOP_CLR_FD) = 0 [ 88.050775][ T5116] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5116] close(4) = 0 [pid 5116] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5116] creat("./file1", 0410) = 4 [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=6 /* 0.06 s */} --- umount2("./24", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./24", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./24/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./24/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./24/binderfs") = 0 umount2("./24/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./24/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./24/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./24/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./24/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [ 88.178295][ T5062] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./24/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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./strace-static-x86_64: Process 5118 attached , child_tidptr=0x5555564d7650) = 5118 [pid 5118] set_robust_list(0x5555564d7660, 24) = 0 [pid 5118] chdir("./25") = 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) = 0x7f3b75a5a000 [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(0x7f3b75a5a000, 138412032) = 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("./file1", 0777) = 0 [ 88.412870][ T5118] loop0: detected capacity change from 0 to 512 [ 88.439639][ T5118] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 88.455375][ T5118] EXT4-fs (loop0): 1 truncate cleaned up [pid 5118] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5118] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5118] chdir("./file1") = 0 [pid 5118] ioctl(4, LOOP_CLR_FD) = 0 [pid 5118] close(4) = 0 [pid 5118] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5118] creat("./file1", 0410) = 4 [ 88.461100][ T5118] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [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=3 /* 0.03 s */} --- umount2("./25", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./25", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./25/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./25/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./25/binderfs") = 0 umount2("./25/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./25/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./25/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./25/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./25/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./25/file1") = 0 getdents64(3, 0x5555564d86f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./25") = 0 [ 88.609485][ T5062] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. 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./strace-static-x86_64: Process 5120 attached , child_tidptr=0x5555564d7650) = 5120 [pid 5120] set_robust_list(0x5555564d7660, 24) = 0 [pid 5120] chdir("./26") = 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) = 0x7f3b75a5a000 [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(0x7f3b75a5a000, 138412032) = 0 [pid 5120] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5120] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5120] close(3) = 0 [pid 5120] mkdir("./file1", 0777) = 0 [ 88.762392][ T5120] loop0: detected capacity change from 0 to 512 [ 88.779148][ T5120] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 88.796184][ T5120] EXT4-fs (loop0): 1 truncate cleaned up [pid 5120] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5120] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5120] chdir("./file1") = 0 [pid 5120] ioctl(4, LOOP_CLR_FD) = 0 [pid 5120] close(4) = 0 [pid 5120] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5120] creat("./file1", 0410) = 4 [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 */} --- [ 88.802199][ T5120] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. umount2("./26", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./26", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./26/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./26/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./26/binderfs") = 0 umount2("./26/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./26/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./26/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./26/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./26/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [ 88.945065][ T5062] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./26/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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./strace-static-x86_64: Process 5122 attached , child_tidptr=0x5555564d7650) = 5122 [pid 5122] set_robust_list(0x5555564d7660, 24) = 0 [pid 5122] chdir("./27") = 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) = 0x7f3b75a5a000 [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(0x7f3b75a5a000, 138412032) = 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("./file1", 0777) = 0 [ 89.166556][ T5122] loop0: detected capacity change from 0 to 512 [ 89.192237][ T5122] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 89.209323][ T5122] EXT4-fs (loop0): 1 truncate cleaned up [pid 5122] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5122] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5122] chdir("./file1") = 0 [pid 5122] ioctl(4, LOOP_CLR_FD) = 0 [pid 5122] close(4) = 0 [ 89.215375][ T5122] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5122] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5122] creat("./file1", 0410) = 4 [pid 5122] exit_group(0) = ? [pid 5122] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5122, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./27", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./27", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./27/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./27/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./27/binderfs") = 0 umount2("./27/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./27/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./27/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./27/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./27/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./27/file1") = 0 getdents64(3, 0x5555564d86f0 /* 0 entries */, 32768) = 0 [ 89.324044][ T5062] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. close(3) = 0 rmdir("./27") = 0 mkdir("./28", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5124 attached , child_tidptr=0x5555564d7650) = 5124 [pid 5124] set_robust_list(0x5555564d7660, 24) = 0 [pid 5124] chdir("./28") = 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) = 0x7f3b75a5a000 [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(0x7f3b75a5a000, 138412032) = 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("./file1", 0777) = 0 [ 89.494026][ T5124] loop0: detected capacity change from 0 to 512 [ 89.519147][ T5124] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 89.536342][ T5124] EXT4-fs (loop0): 1 truncate cleaned up [pid 5124] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5124] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5124] chdir("./file1") = 0 [pid 5124] ioctl(4, LOOP_CLR_FD) = 0 [pid 5124] close(4) = 0 [pid 5124] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5124] creat("./file1", 0410) = 4 [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=5 /* 0.05 s */} --- umount2("./28", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 89.542130][ T5124] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. openat(AT_FDCWD, "./28", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./28/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./28/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./28/binderfs") = 0 umount2("./28/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./28/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./28/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./28/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./28/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [ 89.657904][ T5062] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./28/file1") = 0 getdents64(3, 0x5555564d86f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./28") = 0 mkdir("./29", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5126 attached [pid 5126] set_robust_list(0x5555564d7660, 24 [pid 5062] <... clone resumed>, child_tidptr=0x5555564d7650) = 5126 [pid 5126] <... set_robust_list resumed>) = 0 [pid 5126] chdir("./29") = 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) = 0x7f3b75a5a000 [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(0x7f3b75a5a000, 138412032) = 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("./file1", 0777) = 0 [ 89.877795][ T5126] loop0: detected capacity change from 0 to 512 [ 89.893390][ T5126] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 89.911464][ T5126] EXT4-fs (loop0): 1 truncate cleaned up [pid 5126] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5126] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5126] chdir("./file1") = 0 [pid 5126] ioctl(4, LOOP_CLR_FD) = 0 [pid 5126] close(4) = 0 [ 89.917161][ T5126] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5126] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5126] creat("./file1", 0410) = 4 [pid 5126] exit_group(0) = ? [pid 5126] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5126, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- umount2("./29", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./29", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./29/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./29/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./29/binderfs") = 0 umount2("./29/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./29/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./29/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./29/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./29/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [ 90.065406][ T5062] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./29/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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./strace-static-x86_64: Process 5129 attached , child_tidptr=0x5555564d7650) = 5129 [pid 5129] set_robust_list(0x5555564d7660, 24) = 0 [pid 5129] chdir("./30") = 0 [pid 5129] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5129] setpgid(0, 0) = 0 [pid 5129] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5129] write(3, "1000", 4) = 4 [pid 5129] close(3) = 0 [pid 5129] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5129] memfd_create("syzkaller", 0) = 3 [pid 5129] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5129] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5129] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5129] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5129] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5129] close(3) = 0 [pid 5129] mkdir("./file1", 0777) = 0 [ 90.306349][ T5129] loop0: detected capacity change from 0 to 512 [ 90.330385][ T5129] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 90.346744][ T5129] EXT4-fs (loop0): 1 truncate cleaned up [pid 5129] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5129] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5129] chdir("./file1") = 0 [pid 5129] ioctl(4, LOOP_CLR_FD) = 0 [pid 5129] close(4) = 0 [pid 5129] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5129] creat("./file1", 0410) = 4 [ 90.352701][ T5129] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5129] exit_group(0) = ? [pid 5129] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5129, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./30", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./30", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./30/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./30/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./30/binderfs") = 0 umount2("./30/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./30/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./30/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./30/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./30/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [ 90.442860][ T5062] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./30/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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./strace-static-x86_64: Process 5132 attached [pid 5132] set_robust_list(0x5555564d7660, 24 [pid 5062] <... clone resumed>, child_tidptr=0x5555564d7650) = 5132 [pid 5132] <... set_robust_list resumed>) = 0 [pid 5132] chdir("./31") = 0 [pid 5132] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5132] setpgid(0, 0) = 0 [pid 5132] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5132] write(3, "1000", 4) = 4 [pid 5132] close(3) = 0 [pid 5132] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5132] memfd_create("syzkaller", 0) = 3 [pid 5132] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [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(0x7f3b75a5a000, 138412032) = 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("./file1", 0777) = 0 [ 90.639662][ T5132] loop0: detected capacity change from 0 to 512 [ 90.660125][ T5132] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 90.675990][ T5132] EXT4-fs (loop0): 1 truncate cleaned up [pid 5132] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5132] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5132] chdir("./file1") = 0 [pid 5132] ioctl(4, LOOP_CLR_FD) = 0 [pid 5132] close(4) = 0 [ 90.682032][ T5132] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5132] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5132] creat("./file1", 0410) = 4 [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("./31", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./31", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./31/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./31/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./31/binderfs") = 0 umount2("./31/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./31/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./31/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./31/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./31/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 [ 90.807246][ T5062] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./31/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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./strace-static-x86_64: Process 5134 attached , child_tidptr=0x5555564d7650) = 5134 [pid 5134] set_robust_list(0x5555564d7660, 24) = 0 [pid 5134] chdir("./32") = 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) = 0x7f3b75a5a000 [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(0x7f3b75a5a000, 138412032) = 0 [pid 5134] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5134] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5134] close(3) = 0 [pid 5134] mkdir("./file1", 0777) = 0 [pid 5134] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5134] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5134] chdir("./file1") = 0 [pid 5134] ioctl(4, LOOP_CLR_FD) = 0 [pid 5134] close(4) = 0 [ 91.010675][ T5134] loop0: detected capacity change from 0 to 512 [ 91.035474][ T5134] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 91.052968][ T5134] EXT4-fs (loop0): 1 truncate cleaned up [pid 5134] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5134] creat("./file1", 0410) = 4 [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=2 /* 0.02 s */} --- umount2("./32", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./32", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./32/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./32/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./32/binderfs") = 0 umount2("./32/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./32/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./32/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./32/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./32/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./32/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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 5137 attached , child_tidptr=0x5555564d7650) = 5137 [pid 5137] set_robust_list(0x5555564d7660, 24) = 0 [pid 5137] chdir("./33") = 0 [pid 5137] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5137] setpgid(0, 0) = 0 [pid 5137] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5137] write(3, "1000", 4) = 4 [pid 5137] close(3) = 0 [pid 5137] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5137] memfd_create("syzkaller", 0) = 3 [pid 5137] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5137] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5137] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5137] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5137] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5137] close(3) = 0 [pid 5137] mkdir("./file1", 0777) = 0 [pid 5137] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5137] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5137] chdir("./file1") = 0 [pid 5137] ioctl(4, LOOP_CLR_FD) = 0 [pid 5137] close(4) = 0 [pid 5137] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5137] creat("./file1", 0410) = 4 [pid 5137] exit_group(0) = ? [pid 5137] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5137, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [ 91.423766][ T5137] loop0: detected capacity change from 0 to 512 [ 91.439380][ T5137] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 91.455615][ T5137] EXT4-fs (loop0): 1 truncate cleaned up umount2("./33", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./33", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./33/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./33/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./33/binderfs") = 0 umount2("./33/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./33/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./33/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./33/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./33/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./33/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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./strace-static-x86_64: Process 5139 attached , child_tidptr=0x5555564d7650) = 5139 [pid 5139] set_robust_list(0x5555564d7660, 24) = 0 [pid 5139] chdir("./34") = 0 [pid 5139] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5139] setpgid(0, 0) = 0 [pid 5139] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5139] write(3, "1000", 4) = 4 [pid 5139] close(3) = 0 [pid 5139] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5139] memfd_create("syzkaller", 0) = 3 [pid 5139] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5139] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5139] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5139] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5139] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5139] close(3) = 0 [pid 5139] mkdir("./file1", 0777) = 0 [pid 5139] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5139] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5139] chdir("./file1") = 0 [ 91.716292][ T5139] loop0: detected capacity change from 0 to 512 [ 91.741131][ T5139] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 91.758063][ T5139] EXT4-fs (loop0): 1 truncate cleaned up [pid 5139] ioctl(4, LOOP_CLR_FD) = 0 [pid 5139] close(4) = 0 [pid 5139] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5139] creat("./file1", 0410) = 4 [pid 5139] exit_group(0) = ? [pid 5139] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5139, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./34", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./34", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./34/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./34/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./34/binderfs") = 0 umount2("./34/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./34/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./34/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./34/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./34/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./34/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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./strace-static-x86_64: Process 5141 attached , child_tidptr=0x5555564d7650) = 5141 [pid 5141] set_robust_list(0x5555564d7660, 24) = 0 [pid 5141] chdir("./35") = 0 [pid 5141] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5141] setpgid(0, 0) = 0 [pid 5141] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5141] write(3, "1000", 4) = 4 [pid 5141] close(3) = 0 [pid 5141] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5141] memfd_create("syzkaller", 0) = 3 [pid 5141] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5141] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5141] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5141] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5141] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5141] close(3) = 0 [pid 5141] mkdir("./file1", 0777) = 0 [ 92.044733][ T5141] loop0: detected capacity change from 0 to 512 [ 92.073644][ T5141] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [pid 5141] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5141] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5141] chdir("./file1") = 0 [pid 5141] ioctl(4, LOOP_CLR_FD) = 0 [pid 5141] close(4) = 0 [pid 5141] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5141] creat("./file1", 0410) = 4 [ 92.089513][ T5141] EXT4-fs (loop0): 1 truncate cleaned up [pid 5141] exit_group(0) = ? [pid 5141] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5141, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./35", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./35", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./35/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./35/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./35/binderfs") = 0 umount2("./35/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./35/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./35/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./35/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./35/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./35/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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./strace-static-x86_64: Process 5143 attached [pid 5143] set_robust_list(0x5555564d7660, 24 [pid 5062] <... clone resumed>, child_tidptr=0x5555564d7650) = 5143 [pid 5143] <... set_robust_list resumed>) = 0 [pid 5143] chdir("./36") = 0 [pid 5143] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5143] setpgid(0, 0) = 0 [pid 5143] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5143] write(3, "1000", 4) = 4 [pid 5143] close(3) = 0 [pid 5143] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5143] memfd_create("syzkaller", 0) = 3 [pid 5143] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5143] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5143] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5143] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5143] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5143] close(3) = 0 [pid 5143] mkdir("./file1", 0777) = 0 [pid 5143] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5143] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5143] chdir("./file1") = 0 [pid 5143] ioctl(4, LOOP_CLR_FD) = 0 [pid 5143] close(4) = 0 [pid 5143] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5143] creat("./file1", 0410) = 4 [ 92.320747][ T5143] loop0: detected capacity change from 0 to 512 [ 92.331238][ T5143] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 92.347094][ T5143] EXT4-fs (loop0): 1 truncate cleaned up [pid 5143] exit_group(0) = ? [pid 5143] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5143, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./36", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./36", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./36/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./36/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./36/binderfs") = 0 umount2("./36/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./36/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./36/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./36/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./36/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./36/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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=0x5555564d7650) = 5145 ./strace-static-x86_64: Process 5145 attached [pid 5145] set_robust_list(0x5555564d7660, 24) = 0 [pid 5145] chdir("./37") = 0 [pid 5145] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5145] setpgid(0, 0) = 0 [pid 5145] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5145] write(3, "1000", 4) = 4 [pid 5145] close(3) = 0 [pid 5145] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5145] memfd_create("syzkaller", 0) = 3 [pid 5145] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5145] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5145] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5145] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5145] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5145] close(3) = 0 [pid 5145] mkdir("./file1", 0777) = 0 [pid 5145] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5145] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5145] chdir("./file1") = 0 [pid 5145] ioctl(4, LOOP_CLR_FD) = 0 [ 92.611087][ T5145] loop0: detected capacity change from 0 to 512 [ 92.638049][ T5145] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 92.654678][ T5145] EXT4-fs (loop0): 1 truncate cleaned up [pid 5145] close(4) = 0 [pid 5145] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5145] creat("./file1", 0410) = 4 [pid 5145] exit_group(0) = ? [pid 5145] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5145, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- umount2("./37", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./37", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./37/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./37/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./37/binderfs") = 0 umount2("./37/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./37/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./37/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./37/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./37/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./37/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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./strace-static-x86_64: Process 5147 attached , child_tidptr=0x5555564d7650) = 5147 [pid 5147] set_robust_list(0x5555564d7660, 24) = 0 [pid 5147] chdir("./38") = 0 [pid 5147] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5147] setpgid(0, 0) = 0 [pid 5147] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5147] write(3, "1000", 4) = 4 [pid 5147] close(3) = 0 [pid 5147] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5147] memfd_create("syzkaller", 0) = 3 [pid 5147] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5147] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5147] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5147] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5147] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5147] close(3) = 0 [pid 5147] mkdir("./file1", 0777) = 0 [pid 5147] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5147] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5147] chdir("./file1") = 0 [pid 5147] ioctl(4, LOOP_CLR_FD) = 0 [pid 5147] close(4) = 0 [pid 5147] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5147] creat("./file1", 0410) = 4 [pid 5147] exit_group(0) = ? [pid 5147] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5147, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [ 93.003390][ T5147] loop0: detected capacity change from 0 to 512 [ 93.018546][ T5147] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 93.034899][ T5147] EXT4-fs (loop0): 1 truncate cleaned up restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./38", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./38", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./38/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./38/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./38/binderfs") = 0 umount2("./38/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./38/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./38/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./38/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./38/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./38/file1") = 0 getdents64(3, 0x5555564d86f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./38") = 0 mkdir("./39", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5149 attached , child_tidptr=0x5555564d7650) = 5149 [pid 5149] set_robust_list(0x5555564d7660, 24) = 0 [pid 5149] chdir("./39") = 0 [pid 5149] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5149] setpgid(0, 0) = 0 [pid 5149] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5149] write(3, "1000", 4) = 4 [pid 5149] close(3) = 0 [pid 5149] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5149] memfd_create("syzkaller", 0) = 3 [pid 5149] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5149] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5149] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5149] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5149] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5149] close(3) = 0 [pid 5149] mkdir("./file1", 0777) = 0 [pid 5149] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5149] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5149] chdir("./file1") = 0 [pid 5149] ioctl(4, LOOP_CLR_FD) = 0 [pid 5149] close(4) = 0 [ 93.394745][ T5149] loop0: detected capacity change from 0 to 512 [ 93.410355][ T5149] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 93.426124][ T5149] EXT4-fs (loop0): 1 truncate cleaned up [pid 5149] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5149] creat("./file1", 0410) = 4 [pid 5149] exit_group(0) = ? [pid 5149] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5149, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./39", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./39", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./39/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./39/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./39/binderfs") = 0 umount2("./39/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./39/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./39/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./39/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./39/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./39/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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./strace-static-x86_64: Process 5151 attached , child_tidptr=0x5555564d7650) = 5151 [pid 5151] set_robust_list(0x5555564d7660, 24) = 0 [pid 5151] chdir("./40") = 0 [pid 5151] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5151] setpgid(0, 0) = 0 [pid 5151] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5151] write(3, "1000", 4) = 4 [pid 5151] close(3) = 0 [pid 5151] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5151] memfd_create("syzkaller", 0) = 3 [pid 5151] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5151] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5151] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5151] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5151] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5151] close(3) = 0 [pid 5151] mkdir("./file1", 0777) = 0 [pid 5151] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5151] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5151] chdir("./file1") = 0 [pid 5151] ioctl(4, LOOP_CLR_FD) = 0 [pid 5151] close(4) = 0 [pid 5151] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [ 93.774599][ T5151] loop0: detected capacity change from 0 to 512 [ 93.800239][ T5151] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 93.817467][ T5151] EXT4-fs (loop0): 1 truncate cleaned up [pid 5151] creat("./file1", 0410) = 4 [pid 5151] exit_group(0) = ? [pid 5151] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5151, si_uid=0, si_status=0, si_utime=0, si_stime=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 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./40/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./40/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./40/binderfs") = 0 umount2("./40/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./40/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./40/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./40/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./40/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./40/file1") = 0 getdents64(3, 0x5555564d86f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./40") = 0 mkdir("./41", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5153 attached , child_tidptr=0x5555564d7650) = 5153 [pid 5153] set_robust_list(0x5555564d7660, 24) = 0 [pid 5153] chdir("./41") = 0 [pid 5153] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5153] setpgid(0, 0) = 0 [pid 5153] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5153] write(3, "1000", 4) = 4 [pid 5153] close(3) = 0 [pid 5153] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5153] memfd_create("syzkaller", 0) = 3 [pid 5153] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5153] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5153] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5153] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5153] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5153] close(3) = 0 [pid 5153] mkdir("./file1", 0777) = 0 [ 94.119343][ T5153] loop0: detected capacity change from 0 to 512 [ 94.146274][ T5153] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [pid 5153] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5153] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5153] chdir("./file1") = 0 [pid 5153] ioctl(4, LOOP_CLR_FD) = 0 [ 94.165613][ T5153] EXT4-fs (loop0): 1 truncate cleaned up [pid 5153] close(4) = 0 [pid 5153] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5153] creat("./file1", 0410) = 4 [pid 5153] exit_group(0) = ? [pid 5153] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5153, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./41", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./41", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./41/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./41/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./41/binderfs") = 0 umount2("./41/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./41/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./41/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./41/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./41/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./41/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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./strace-static-x86_64: Process 5155 attached , child_tidptr=0x5555564d7650) = 5155 [pid 5155] set_robust_list(0x5555564d7660, 24) = 0 [pid 5155] chdir("./42") = 0 [pid 5155] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5155] setpgid(0, 0) = 0 [pid 5155] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5155] write(3, "1000", 4) = 4 [pid 5155] close(3) = 0 [pid 5155] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5155] memfd_create("syzkaller", 0) = 3 [pid 5155] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5155] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5155] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5155] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5155] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5155] close(3) = 0 [pid 5155] mkdir("./file1", 0777) = 0 [pid 5155] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5155] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5155] chdir("./file1") = 0 [pid 5155] ioctl(4, LOOP_CLR_FD) = 0 [pid 5155] close(4) = 0 [ 94.452919][ T5155] loop0: detected capacity change from 0 to 512 [ 94.468430][ T5155] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 94.484800][ T5155] EXT4-fs (loop0): 1 truncate cleaned up [pid 5155] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5155] creat("./file1", 0410) = 4 [pid 5155] exit_group(0) = ? [pid 5155] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5155, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- umount2("./42", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./42", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./42/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./42/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./42/binderfs") = 0 umount2("./42/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./42/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./42/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./42/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./42/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./42/file1") = 0 getdents64(3, 0x5555564d86f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./42") = 0 mkdir("./43", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5157 attached [pid 5157] set_robust_list(0x5555564d7660, 24 [pid 5062] <... clone resumed>, child_tidptr=0x5555564d7650) = 5157 [pid 5157] <... set_robust_list resumed>) = 0 [pid 5157] chdir("./43") = 0 [pid 5157] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5157] setpgid(0, 0) = 0 [pid 5157] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5157] write(3, "1000", 4) = 4 [pid 5157] close(3) = 0 [pid 5157] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5157] memfd_create("syzkaller", 0) = 3 [pid 5157] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5157] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5157] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5157] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5157] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5157] close(3) = 0 [pid 5157] mkdir("./file1", 0777) = 0 [pid 5157] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5157] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5157] chdir("./file1") = 0 [pid 5157] ioctl(4, LOOP_CLR_FD) = 0 [pid 5157] close(4) = 0 [pid 5157] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [ 94.865513][ T5157] loop0: detected capacity change from 0 to 512 [ 94.891327][ T5157] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 94.907176][ T5157] EXT4-fs (loop0): 1 truncate cleaned up [pid 5157] creat("./file1", 0410) = 4 [pid 5157] exit_group(0) = ? [pid 5157] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5157, si_uid=0, si_status=0, si_utime=0, si_stime=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 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./43/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./43/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./43/binderfs") = 0 umount2("./43/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./43/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./43/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./43/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./43/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./43/file1") = 0 getdents64(3, 0x5555564d86f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./43") = 0 mkdir("./44", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5159 attached , child_tidptr=0x5555564d7650) = 5159 [pid 5159] set_robust_list(0x5555564d7660, 24) = 0 [pid 5159] chdir("./44") = 0 [pid 5159] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5159] setpgid(0, 0) = 0 [pid 5159] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5159] write(3, "1000", 4) = 4 [pid 5159] close(3) = 0 [pid 5159] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5159] memfd_create("syzkaller", 0) = 3 [pid 5159] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5159] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5159] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5159] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5159] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5159] close(3) = 0 [pid 5159] mkdir("./file1", 0777) = 0 [pid 5159] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5159] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5159] chdir("./file1") = 0 [pid 5159] ioctl(4, LOOP_CLR_FD) = 0 [pid 5159] close(4) = 0 [ 95.198371][ T5159] loop0: detected capacity change from 0 to 512 [ 95.224122][ T5159] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 95.240602][ T5159] EXT4-fs (loop0): 1 truncate cleaned up [pid 5159] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5159] creat("./file1", 0410) = 4 [pid 5159] exit_group(0) = ? [pid 5159] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5159, si_uid=0, si_status=0, si_utime=0, si_stime=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 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./44/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./44/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./44/binderfs") = 0 umount2("./44/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./44/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./44/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./44/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./44/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./44/file1") = 0 getdents64(3, 0x5555564d86f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./44") = 0 mkdir("./45", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5162 attached , child_tidptr=0x5555564d7650) = 5162 [pid 5162] set_robust_list(0x5555564d7660, 24) = 0 [pid 5162] chdir("./45") = 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) = 0x7f3b75a5a000 [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(0x7f3b75a5a000, 138412032) = 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("./file1", 0777) = 0 [pid 5162] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5162] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5162] chdir("./file1") = 0 [pid 5162] ioctl(4, LOOP_CLR_FD) = 0 [pid 5162] close(4) = 0 [pid 5162] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [ 95.540388][ T5162] loop0: detected capacity change from 0 to 512 [ 95.556465][ T5162] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 95.572789][ T5162] EXT4-fs (loop0): 1 truncate cleaned up [pid 5162] creat("./file1", 0410) = 4 [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=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 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./45/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./45/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./45/binderfs") = 0 umount2("./45/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./45/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./45/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./45/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./45/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./45/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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 5164 attached [pid 5164] set_robust_list(0x5555564d7660, 24 [pid 5062] <... clone resumed>, child_tidptr=0x5555564d7650) = 5164 [pid 5164] <... set_robust_list resumed>) = 0 [pid 5164] chdir("./46") = 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) = 0x7f3b75a5a000 [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(0x7f3b75a5a000, 138412032) = 0 [pid 5164] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5164] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5164] close(3) = 0 [pid 5164] mkdir("./file1", 0777) = 0 [ 95.871019][ T5164] loop0: detected capacity change from 0 to 512 [ 95.902280][ T5164] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [pid 5164] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5164] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5164] chdir("./file1") = 0 [pid 5164] ioctl(4, LOOP_CLR_FD) = 0 [pid 5164] close(4) = 0 [pid 5164] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [ 95.918679][ T5164] EXT4-fs (loop0): 1 truncate cleaned up [pid 5164] creat("./file1", 0410) = 4 [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=1 /* 0.01 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 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./46/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./46/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./46/binderfs") = 0 umount2("./46/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./46/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./46/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./46/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./46/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./46/file1") = 0 getdents64(3, 0x5555564d86f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./46") = 0 mkdir("./47", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5166 attached [pid 5166] set_robust_list(0x5555564d7660, 24 [pid 5062] <... clone resumed>, child_tidptr=0x5555564d7650) = 5166 [pid 5166] <... set_robust_list resumed>) = 0 [pid 5166] chdir("./47") = 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) = 0x7f3b75a5a000 [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(0x7f3b75a5a000, 138412032) = 0 [pid 5166] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5166] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5166] close(3) = 0 [pid 5166] mkdir("./file1", 0777) = 0 [pid 5166] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5166] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5166] chdir("./file1") = 0 [pid 5166] ioctl(4, LOOP_CLR_FD) = 0 [pid 5166] close(4) = 0 [pid 5166] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [ 96.191373][ T5166] loop0: detected capacity change from 0 to 512 [ 96.212072][ T5166] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 96.228099][ T5166] EXT4-fs (loop0): 1 truncate cleaned up [pid 5166] creat("./file1", 0410) = 4 [pid 5166] exit_group(0) = ? [pid 5166] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5166, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 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 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./47/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./47/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./47/binderfs") = 0 umount2("./47/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./47/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./47/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./47/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./47/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./47/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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./strace-static-x86_64: Process 5168 attached , child_tidptr=0x5555564d7650) = 5168 [pid 5168] set_robust_list(0x5555564d7660, 24) = 0 [pid 5168] chdir("./48") = 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) = 0x7f3b75a5a000 [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(0x7f3b75a5a000, 138412032) = 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("./file1", 0777) = 0 [pid 5168] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5168] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5168] chdir("./file1") = 0 [pid 5168] ioctl(4, LOOP_CLR_FD) = 0 [pid 5168] close(4) = 0 [pid 5168] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5168] creat("./file1", 0410) = 4 [ 96.596865][ T5168] loop0: detected capacity change from 0 to 512 [ 96.612192][ T5168] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 96.628488][ T5168] EXT4-fs (loop0): 1 truncate cleaned up [pid 5168] exit_group(0) = ? [pid 5168] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5168, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- umount2("./48", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./48", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./48/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./48/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./48/binderfs") = 0 umount2("./48/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./48/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./48/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./48/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./48/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./48/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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./strace-static-x86_64: Process 5170 attached , child_tidptr=0x5555564d7650) = 5170 [pid 5170] set_robust_list(0x5555564d7660, 24) = 0 [pid 5170] chdir("./49") = 0 [pid 5170] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5170] setpgid(0, 0) = 0 [pid 5170] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5170] write(3, "1000", 4) = 4 [pid 5170] close(3) = 0 [pid 5170] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5170] memfd_create("syzkaller", 0) = 3 [pid 5170] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5170] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5170] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5170] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5170] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5170] close(3) = 0 [pid 5170] mkdir("./file1", 0777) = 0 [pid 5170] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5170] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5170] chdir("./file1") = 0 [pid 5170] ioctl(4, LOOP_CLR_FD) = 0 [pid 5170] close(4) = 0 [ 96.953955][ T5170] loop0: detected capacity change from 0 to 512 [ 96.971049][ T5170] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 96.986531][ T5170] EXT4-fs (loop0): 1 truncate cleaned up [pid 5170] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5170] creat("./file1", 0410) = 4 [pid 5170] exit_group(0) = ? [pid 5170] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5170, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./49", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./49", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./49/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./49/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./49/binderfs") = 0 umount2("./49/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./49/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./49/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./49/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./49/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./49/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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./strace-static-x86_64: Process 5172 attached , child_tidptr=0x5555564d7650) = 5172 [pid 5172] set_robust_list(0x5555564d7660, 24) = 0 [pid 5172] chdir("./50") = 0 [pid 5172] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5172] setpgid(0, 0) = 0 [pid 5172] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5172] write(3, "1000", 4) = 4 [pid 5172] close(3) = 0 [pid 5172] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5172] memfd_create("syzkaller", 0) = 3 [pid 5172] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5172] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5172] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5172] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5172] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5172] close(3) = 0 [pid 5172] mkdir("./file1", 0777) = 0 [pid 5172] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5172] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5172] chdir("./file1") = 0 [pid 5172] ioctl(4, LOOP_CLR_FD) = 0 [pid 5172] close(4) = 0 [ 97.297928][ T5172] loop0: detected capacity change from 0 to 512 [ 97.313616][ T5172] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 97.329531][ T5172] EXT4-fs (loop0): 1 truncate cleaned up [pid 5172] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5172] creat("./file1", 0410) = 4 [pid 5172] exit_group(0) = ? [pid 5172] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5172, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./50", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./50", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./50/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./50/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./50/binderfs") = 0 umount2("./50/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./50/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./50/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./50/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./50/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./50/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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./strace-static-x86_64: Process 5174 attached [pid 5174] set_robust_list(0x5555564d7660, 24 [pid 5062] <... clone resumed>, child_tidptr=0x5555564d7650) = 5174 [pid 5174] <... set_robust_list resumed>) = 0 [pid 5174] chdir("./51") = 0 [pid 5174] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5174] setpgid(0, 0) = 0 [pid 5174] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5174] write(3, "1000", 4) = 4 [pid 5174] close(3) = 0 [pid 5174] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5174] memfd_create("syzkaller", 0) = 3 [pid 5174] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5174] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5174] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5174] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5174] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5174] close(3) = 0 [pid 5174] mkdir("./file1", 0777) = 0 [pid 5174] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5174] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [ 97.711833][ T5174] loop0: detected capacity change from 0 to 512 [ 97.740200][ T5174] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [pid 5174] chdir("./file1") = 0 [pid 5174] ioctl(4, LOOP_CLR_FD) = 0 [pid 5174] close(4) = 0 [pid 5174] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [ 97.756608][ T5174] EXT4-fs (loop0): 1 truncate cleaned up [pid 5174] creat("./file1", 0410) = 4 [pid 5174] exit_group(0) = ? [pid 5174] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5174, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./51", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./51", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./51/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./51/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./51/binderfs") = 0 umount2("./51/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./51/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./51/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./51/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./51/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./51/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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./strace-static-x86_64: Process 5176 attached , child_tidptr=0x5555564d7650) = 5176 [pid 5176] set_robust_list(0x5555564d7660, 24) = 0 [pid 5176] chdir("./52") = 0 [pid 5176] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5176] setpgid(0, 0) = 0 [pid 5176] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5176] write(3, "1000", 4) = 4 [pid 5176] close(3) = 0 [pid 5176] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5176] memfd_create("syzkaller", 0) = 3 [pid 5176] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5176] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5176] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5176] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5176] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5176] close(3) = 0 [pid 5176] mkdir("./file1", 0777) = 0 [pid 5176] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5176] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5176] chdir("./file1") = 0 [pid 5176] ioctl(4, LOOP_CLR_FD) = 0 [pid 5176] close(4) = 0 [pid 5176] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5176] creat("./file1", 0410) = 4 [pid 5176] exit_group(0) = ? [pid 5176] +++ exited with 0 +++ [ 98.028096][ T5176] loop0: detected capacity change from 0 to 512 [ 98.047407][ T5176] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 98.064220][ T5176] EXT4-fs (loop0): 1 truncate cleaned up --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5176, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./52", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./52", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./52/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./52/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./52/binderfs") = 0 umount2("./52/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./52/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./52/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./52/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./52/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./52/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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 5178 attached , child_tidptr=0x5555564d7650) = 5178 [pid 5178] set_robust_list(0x5555564d7660, 24) = 0 [pid 5178] chdir("./53") = 0 [pid 5178] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5178] setpgid(0, 0) = 0 [pid 5178] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5178] write(3, "1000", 4) = 4 [pid 5178] close(3) = 0 [pid 5178] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5178] memfd_create("syzkaller", 0) = 3 [pid 5178] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5178] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5178] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5178] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5178] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5178] close(3) = 0 [pid 5178] mkdir("./file1", 0777) = 0 [pid 5178] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5178] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5178] chdir("./file1") = 0 [pid 5178] ioctl(4, LOOP_CLR_FD) = 0 [pid 5178] close(4) = 0 [pid 5178] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [ 98.298866][ T5178] loop0: detected capacity change from 0 to 512 [ 98.323434][ T5178] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 98.339764][ T5178] EXT4-fs (loop0): 1 truncate cleaned up [pid 5178] creat("./file1", 0410) = 4 [pid 5178] exit_group(0) = ? [pid 5178] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5178, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./53", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./53", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./53/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./53/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./53/binderfs") = 0 umount2("./53/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./53/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./53/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./53/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./53/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./53/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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./strace-static-x86_64: Process 5180 attached , child_tidptr=0x5555564d7650) = 5180 [pid 5180] set_robust_list(0x5555564d7660, 24) = 0 [pid 5180] chdir("./54") = 0 [pid 5180] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5180] setpgid(0, 0) = 0 [pid 5180] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5180] write(3, "1000", 4) = 4 [pid 5180] close(3) = 0 [pid 5180] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5180] memfd_create("syzkaller", 0) = 3 [pid 5180] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5180] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5180] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5180] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5180] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5180] close(3) = 0 [pid 5180] mkdir("./file1", 0777) = 0 [pid 5180] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5180] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5180] chdir("./file1") = 0 [pid 5180] ioctl(4, LOOP_CLR_FD) = 0 [pid 5180] close(4) = 0 [pid 5180] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5180] creat("./file1", 0410) = 4 [pid 5180] exit_group(0) = ? [pid 5180] +++ exited with 0 +++ [ 98.684940][ T5180] loop0: detected capacity change from 0 to 512 [ 98.709390][ T5180] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 98.725935][ T5180] EXT4-fs (loop0): 1 truncate cleaned up --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5180, 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 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./54/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./54/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./54/binderfs") = 0 umount2("./54/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./54/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./54/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./54/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./54/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./54/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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./strace-static-x86_64: Process 5182 attached , child_tidptr=0x5555564d7650) = 5182 [pid 5182] set_robust_list(0x5555564d7660, 24) = 0 [pid 5182] chdir("./55") = 0 [pid 5182] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5182] setpgid(0, 0) = 0 [pid 5182] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5182] write(3, "1000", 4) = 4 [pid 5182] close(3) = 0 [pid 5182] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5182] memfd_create("syzkaller", 0) = 3 [pid 5182] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5182] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5182] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5182] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5182] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5182] close(3) = 0 [pid 5182] mkdir("./file1", 0777) = 0 [pid 5182] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5182] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5182] chdir("./file1") = 0 [pid 5182] ioctl(4, LOOP_CLR_FD) = 0 [pid 5182] close(4) = 0 [ 98.979911][ T5182] loop0: detected capacity change from 0 to 512 [ 99.006806][ T5182] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 99.023115][ T5182] EXT4-fs (loop0): 1 truncate cleaned up [pid 5182] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5182] creat("./file1", 0410) = 4 [pid 5182] exit_group(0) = ? [pid 5182] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5182, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./55", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./55", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./55/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./55/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./55/binderfs") = 0 umount2("./55/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./55/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./55/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./55/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./55/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./55/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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 5184 attached , child_tidptr=0x5555564d7650) = 5184 [pid 5184] set_robust_list(0x5555564d7660, 24) = 0 [pid 5184] chdir("./56") = 0 [pid 5184] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5184] setpgid(0, 0) = 0 [pid 5184] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5184] write(3, "1000", 4) = 4 [pid 5184] close(3) = 0 [pid 5184] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5184] memfd_create("syzkaller", 0) = 3 [pid 5184] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5184] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5184] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5184] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5184] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5184] close(3) = 0 [pid 5184] mkdir("./file1", 0777) = 0 [pid 5184] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5184] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5184] chdir("./file1") = 0 [pid 5184] ioctl(4, LOOP_CLR_FD) = 0 [pid 5184] close(4) = 0 [pid 5184] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [ 99.389769][ T5184] loop0: detected capacity change from 0 to 512 [ 99.410571][ T5184] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 99.425905][ T5184] EXT4-fs (loop0): 1 truncate cleaned up [pid 5184] creat("./file1", 0410) = 4 [pid 5184] exit_group(0) = ? [pid 5184] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5184, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./56", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./56", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./56/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./56/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./56/binderfs") = 0 umount2("./56/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./56/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./56/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./56/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./56/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./56/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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 5186 attached [pid 5186] set_robust_list(0x5555564d7660, 24 [pid 5062] <... clone resumed>, child_tidptr=0x5555564d7650) = 5186 [pid 5186] <... set_robust_list resumed>) = 0 [pid 5186] chdir("./57") = 0 [pid 5186] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5186] setpgid(0, 0) = 0 [pid 5186] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5186] write(3, "1000", 4) = 4 [pid 5186] close(3) = 0 [pid 5186] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5186] memfd_create("syzkaller", 0) = 3 [pid 5186] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5186] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5186] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5186] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5186] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5186] close(3) = 0 [pid 5186] mkdir("./file1", 0777) = 0 [pid 5186] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5186] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5186] chdir("./file1") = 0 [pid 5186] ioctl(4, LOOP_CLR_FD) = 0 [pid 5186] close(4) = 0 [pid 5186] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [ 99.721136][ T5186] loop0: detected capacity change from 0 to 512 [ 99.737122][ T5186] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 99.753696][ T5186] EXT4-fs (loop0): 1 truncate cleaned up [pid 5186] creat("./file1", 0410) = 4 [pid 5186] exit_group(0) = ? [pid 5186] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5186, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- umount2("./57", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./57", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./57/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./57/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./57/binderfs") = 0 umount2("./57/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./57/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./57/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./57/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./57/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./57/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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./strace-static-x86_64: Process 5188 attached [pid 5188] set_robust_list(0x5555564d7660, 24 [pid 5062] <... clone resumed>, child_tidptr=0x5555564d7650) = 5188 [pid 5188] <... set_robust_list resumed>) = 0 [pid 5188] chdir("./58") = 0 [pid 5188] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5188] setpgid(0, 0) = 0 [pid 5188] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5188] write(3, "1000", 4) = 4 [pid 5188] close(3) = 0 [pid 5188] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5188] memfd_create("syzkaller", 0) = 3 [pid 5188] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5188] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5188] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5188] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5188] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5188] close(3) = 0 [pid 5188] mkdir("./file1", 0777) = 0 [pid 5188] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5188] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5188] chdir("./file1") = 0 [pid 5188] ioctl(4, LOOP_CLR_FD) = 0 [pid 5188] close(4) = 0 [pid 5188] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5188] creat("./file1", 0410) = 4 [pid 5188] exit_group(0) = ? [pid 5188] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5188, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./58", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 100.079671][ T5188] loop0: detected capacity change from 0 to 512 [ 100.096243][ T5188] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 100.112659][ T5188] EXT4-fs (loop0): 1 truncate cleaned up openat(AT_FDCWD, "./58", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./58/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./58/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./58/binderfs") = 0 umount2("./58/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./58/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./58/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./58/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./58/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./58/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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./strace-static-x86_64: Process 5190 attached , child_tidptr=0x5555564d7650) = 5190 [pid 5190] set_robust_list(0x5555564d7660, 24) = 0 [pid 5190] chdir("./59") = 0 [pid 5190] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5190] setpgid(0, 0) = 0 [pid 5190] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5190] write(3, "1000", 4) = 4 [pid 5190] close(3) = 0 [pid 5190] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5190] memfd_create("syzkaller", 0) = 3 [pid 5190] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5190] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5190] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5190] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5190] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5190] close(3) = 0 [pid 5190] mkdir("./file1", 0777) = 0 [pid 5190] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5190] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5190] chdir("./file1") = 0 [pid 5190] ioctl(4, LOOP_CLR_FD) = 0 [pid 5190] close(4) = 0 [pid 5190] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5190] creat("./file1", 0410) = 4 [pid 5190] exit_group(0) = ? [pid 5190] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5190, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [ 100.408742][ T5190] loop0: detected capacity change from 0 to 512 [ 100.425755][ T5190] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 100.442304][ T5190] 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 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./59/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./59/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./59/binderfs") = 0 umount2("./59/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./59/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./59/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./59/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./59/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./59/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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./strace-static-x86_64: Process 5192 attached , child_tidptr=0x5555564d7650) = 5192 [pid 5192] set_robust_list(0x5555564d7660, 24) = 0 [pid 5192] chdir("./60") = 0 [pid 5192] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5192] setpgid(0, 0) = 0 [pid 5192] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5192] write(3, "1000", 4) = 4 [pid 5192] close(3) = 0 [pid 5192] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5192] memfd_create("syzkaller", 0) = 3 [pid 5192] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5192] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5192] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5192] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5192] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5192] close(3) = 0 [pid 5192] mkdir("./file1", 0777) = 0 [pid 5192] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5192] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5192] chdir("./file1") = 0 [pid 5192] ioctl(4, LOOP_CLR_FD) = 0 [pid 5192] close(4) = 0 [pid 5192] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5192] creat("./file1", 0410) = 4 [ 100.765938][ T5192] loop0: detected capacity change from 0 to 512 [ 100.780890][ T5192] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 100.796854][ T5192] EXT4-fs (loop0): 1 truncate cleaned up [pid 5192] exit_group(0) = ? [pid 5192] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5192, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- umount2("./60", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./60", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./60/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./60/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./60/binderfs") = 0 umount2("./60/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./60/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./60/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./60/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./60/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./60/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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 5194 attached , child_tidptr=0x5555564d7650) = 5194 [pid 5194] set_robust_list(0x5555564d7660, 24) = 0 [pid 5194] chdir("./61") = 0 [pid 5194] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5194] setpgid(0, 0) = 0 [pid 5194] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5194] write(3, "1000", 4) = 4 [pid 5194] close(3) = 0 [pid 5194] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5194] memfd_create("syzkaller", 0) = 3 [pid 5194] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5194] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5194] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5194] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5194] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5194] close(3) = 0 [pid 5194] mkdir("./file1", 0777) = 0 [pid 5194] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5194] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5194] chdir("./file1") = 0 [pid 5194] ioctl(4, LOOP_CLR_FD) = 0 [pid 5194] close(4) = 0 [pid 5194] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [ 101.029982][ T5194] loop0: detected capacity change from 0 to 512 [ 101.040018][ T5194] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 101.055899][ T5194] EXT4-fs (loop0): 1 truncate cleaned up [ 101.093616][ T5194] [ 101.095993][ T5194] ====================================================== [ 101.103195][ T5194] WARNING: possible circular locking dependency detected [ 101.110217][ T5194] 6.7.0-rc7-syzkaller-00049-g453f5db0619e #0 Not tainted [ 101.117274][ T5194] ------------------------------------------------------ [ 101.124381][ T5194] syz-executor622/5194 is trying to acquire lock: [ 101.130789][ T5194] ffff8880763d2740 (&ea_inode->i_rwsem#7/1){+.+.}-{3:3}, at: ext4_xattr_inode_iget+0x173/0x430 [ 101.141156][ T5194] [ 101.141156][ T5194] but task is already holding lock: [ 101.148534][ T5194] ffff8880763d3608 (&ei->i_data_sem/3){++++}-{3:3}, at: ext4_setattr+0x1b94/0x29d0 [ 101.158387][ T5194] [ 101.158387][ T5194] which lock already depends on the new lock. [ 101.158387][ T5194] [ 101.169923][ T5194] [ 101.169923][ T5194] the existing dependency chain (in reverse order) is: [ 101.178935][ T5194] [ 101.178935][ T5194] -> #1 (&ei->i_data_sem/3){++++}-{3:3}: [ 101.186844][ T5194] down_write+0x3a/0x50 [ 101.191538][ T5194] ext4_xattr_set_entry+0x3415/0x3ce0 [ 101.197715][ T5194] ext4_xattr_ibody_set+0x126/0x380 [ 101.203802][ T5194] ext4_xattr_set_handle+0x936/0x1420 [ 101.210049][ T5194] ext4_xattr_set+0x149/0x370 [ 101.215535][ T5194] ext4_xattr_user_set+0xb9/0xf0 [ 101.221079][ T5194] __vfs_setxattr+0x173/0x1d0 [ 101.226623][ T5194] __vfs_setxattr_noperm+0x127/0x5e0 [ 101.232894][ T5194] __vfs_setxattr_locked+0x17e/0x250 [ 101.238719][ T5194] vfs_setxattr+0x146/0x350 [ 101.243853][ T5194] do_setxattr+0x142/0x170 [ 101.248889][ T5194] setxattr+0x159/0x170 [ 101.253923][ T5194] path_setxattr+0x175/0x1d0 [ 101.259822][ T5194] __x64_sys_setxattr+0xc4/0x160 [ 101.265409][ T5194] do_syscall_64+0x40/0x110 [ 101.270613][ T5194] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 101.277466][ T5194] [ 101.277466][ T5194] -> #0 (&ea_inode->i_rwsem#7/1){+.+.}-{3:3}: [ 101.286076][ T5194] __lock_acquire+0x2433/0x3b20 [ 101.291593][ T5194] lock_acquire+0x1ae/0x520 [ 101.297077][ T5194] down_write+0x3a/0x50 [ 101.302843][ T5194] ext4_xattr_inode_iget+0x173/0x430 [ 101.309010][ T5194] ext4_xattr_inode_get+0x170/0x840 [ 101.315458][ T5194] ext4_expand_extra_isize_ea+0x125a/0x1b20 [ 101.322140][ T5194] __ext4_expand_extra_isize+0x342/0x470 [ 101.328675][ T5194] __ext4_mark_inode_dirty+0x52b/0x810 [ 101.335302][ T5194] ext4_setattr+0x1c08/0x29d0 [ 101.340692][ T5194] notify_change+0x742/0x11c0 [ 101.347419][ T5194] do_truncate+0x15c/0x220 [ 101.352369][ T5194] path_openat+0x2597/0x2c50 [ 101.357731][ T5194] do_filp_open+0x1de/0x430 [ 101.362800][ T5194] do_sys_openat2+0x176/0x1e0 [ 101.368099][ T5194] __x64_sys_creat+0xcd/0x120 [ 101.373638][ T5194] do_syscall_64+0x40/0x110 [ 101.378790][ T5194] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 101.385322][ T5194] [ 101.385322][ T5194] other info that might help us debug this: [ 101.385322][ T5194] [ 101.395640][ T5194] Possible unsafe locking scenario: [ 101.395640][ T5194] [ 101.403177][ T5194] CPU0 CPU1 [ 101.408775][ T5194] ---- ---- [ 101.414256][ T5194] lock(&ei->i_data_sem/3); [ 101.418944][ T5194] lock(&ea_inode->i_rwsem#7/1); [ 101.427377][ T5194] lock(&ei->i_data_sem/3); [ 101.434671][ T5194] lock(&ea_inode->i_rwsem#7/1); [ 101.440214][ T5194] [ 101.440214][ T5194] *** DEADLOCK *** [ 101.440214][ T5194] [ 101.448872][ T5194] 5 locks held by syz-executor622/5194: [ 101.454506][ T5194] #0: ffff888020622418 (sb_writers#5){.+.+}-{0:0}, at: path_openat+0x2112/0x2c50 [ 101.464005][ T5194] #1: ffff8880763d3780 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: do_truncate+0x14b/0x220 [ 101.474572][ T5194] #2: ffff8880763d3920 (mapping.invalidate_lock){++++}-{3:3}, at: ext4_setattr+0xdf1/0x29d0 [ 101.486759][ T5194] #3: ffff8880763d3608 (&ei->i_data_sem/3){++++}-{3:3}, at: ext4_setattr+0x1b94/0x29d0 [ 101.496775][ T5194] #4: ffff8880763d3448 (&ei->xattr_sem){++++}-{3:3}, at: __ext4_mark_inode_dirty+0x4a1/0x810 [ 101.507502][ T5194] [ 101.507502][ T5194] stack backtrace: [ 101.513472][ T5194] CPU: 0 PID: 5194 Comm: syz-executor622 Not tainted 6.7.0-rc7-syzkaller-00049-g453f5db0619e #0 [ 101.524320][ T5194] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 101.534413][ T5194] Call Trace: [ 101.537703][ T5194] [ 101.540628][ T5194] dump_stack_lvl+0xd9/0x1b0 [ 101.545264][ T5194] check_noncircular+0x317/0x400 [ 101.550312][ T5194] ? print_circular_bug+0x5c0/0x5c0 [ 101.555565][ T5194] ? lockdep_lock+0xc6/0x200 [ 101.560163][ T5194] ? hlock_class+0x130/0x130 [ 101.564770][ T5194] __lock_acquire+0x2433/0x3b20 [ 101.569811][ T5194] ? lockdep_hardirqs_on_prepare+0x420/0x420 [ 101.575914][ T5194] ? look_up_lock_class+0x59/0x130 [ 101.581068][ T5194] lock_acquire+0x1ae/0x520 [ 101.585695][ T5194] ? ext4_xattr_inode_iget+0x173/0x430 [ 101.591165][ T5194] ? lock_sync+0x190/0x190 [ 101.595674][ T5194] ? preempt_count_sub+0x160/0x160 [ 101.600799][ T5194] down_write+0x3a/0x50 [ 101.604979][ T5194] ? ext4_xattr_inode_iget+0x173/0x430 [ 101.610616][ T5194] ext4_xattr_inode_iget+0x173/0x430 [ 101.616356][ T5194] ext4_xattr_inode_get+0x170/0x840 [ 101.621573][ T5194] ? ext4_xattr_inode_iget+0x430/0x430 [ 101.627281][ T5194] ? rcu_is_watching+0x12/0xb0 [ 101.632060][ T5194] ? trace_kmalloc+0x26/0xa0 [ 101.637108][ T5194] ? __kmalloc_node+0x78/0x90 [ 101.641950][ T5194] ext4_expand_extra_isize_ea+0x125a/0x1b20 [ 101.648123][ T5194] ? ext4_xattr_set+0x370/0x370 [ 101.653418][ T5194] ? lockdep_unlock+0x11b/0x290 [ 101.658278][ T5194] ? preempt_count_sub+0x160/0x160 [ 101.663404][ T5194] ? down_write_trylock+0x1ae/0x3d0 [ 101.668962][ T5194] ? dquot_initialize_needed+0x17d/0x290 [ 101.674973][ T5194] __ext4_expand_extra_isize+0x342/0x470 [ 101.680717][ T5194] __ext4_mark_inode_dirty+0x52b/0x810 [ 101.686221][ T5194] ? ext4_expand_extra_isize+0x600/0x600 [ 101.692134][ T5194] ? lock_sync+0x190/0x190 [ 101.696655][ T5194] ? preempt_count_sub+0x160/0x160 [ 101.701986][ T5194] ext4_setattr+0x1c08/0x29d0 [ 101.707157][ T5194] ? ext4_journalled_write_end+0x1120/0x1120 [ 101.713157][ T5194] notify_change+0x742/0x11c0 [ 101.717877][ T5194] do_truncate+0x15c/0x220 [ 101.722307][ T5194] ? file_open_root+0x450/0x450 [ 101.727190][ T5194] path_openat+0x2597/0x2c50 [ 101.734670][ T5194] ? path_lookupat+0x770/0x770 [ 101.739548][ T5194] ? lockdep_hardirqs_on_prepare+0x420/0x420 [ 101.745641][ T5194] do_filp_open+0x1de/0x430 [ 101.750355][ T5194] ? may_open_dev+0xf0/0xf0 [ 101.754867][ T5194] ? find_held_lock+0x2d/0x110 [ 101.759833][ T5194] ? _raw_spin_unlock+0x28/0x40 [ 101.764808][ T5194] ? alloc_fd+0x2da/0x6c0 [ 101.769354][ T5194] do_sys_openat2+0x176/0x1e0 [ 101.774047][ T5194] ? build_open_flags+0x690/0x690 [ 101.779072][ T5194] ? ptrace_notify+0xf4/0x130 [ 101.783765][ T5194] ? restore_fpregs_from_fpstate+0xc1/0x1d0 [ 101.789770][ T5194] __x64_sys_creat+0xcd/0x120 [ 101.794481][ T5194] ? __x64_compat_sys_openat+0x200/0x200 [ 101.800126][ T5194] ? _raw_spin_unlock_irq+0x2e/0x50 [ 101.805332][ T5194] ? syscall_trace_enter.constprop.0+0xaf/0x1e0 [ 101.811929][ T5194] do_syscall_64+0x40/0x110 [ 101.816483][ T5194] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 101.822516][ T5194] RIP: 0033:0x7f3b7de99169 [ 101.826937][ T5194] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 21 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 101.847163][ T5194] RSP: 002b:00007ffd97a88028 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 [ 101.855630][ T5194] RAX: ffffffffffffffda RBX: 0031656c69662f2e RCX: 00007f3b7de99169 [ 101.863810][ T5194] RDX: 00007f3b7de99169 RSI: 0000000000000108 RDI: 0000000020000000 [ 101.871873][ T5194] RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000 [ 101.880806][ T5194] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd97a88070 [ 101.888810][ T5194] R13: 00007ffd97a880b0 R14: 0000000000040000 R15: 0000000000000003 [pid 5194] creat("./file1", 0410) = 4 [pid 5194] exit_group(0) = ? [pid 5194] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5194, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [ 101.896882][ T5194] umount2("./61", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./61", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./61/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./61/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./61/binderfs") = 0 umount2("./61/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./61/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./61/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./61/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./61/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./61/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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./strace-static-x86_64: Process 5196 attached , child_tidptr=0x5555564d7650) = 5196 [pid 5196] set_robust_list(0x5555564d7660, 24) = 0 [pid 5196] chdir("./62") = 0 [pid 5196] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5196] setpgid(0, 0) = 0 [pid 5196] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5196] write(3, "1000", 4) = 4 [pid 5196] close(3) = 0 [pid 5196] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5196] memfd_create("syzkaller", 0) = 3 [pid 5196] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5196] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5196] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5196] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5196] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5196] close(3) = 0 [pid 5196] mkdir("./file1", 0777) = 0 [pid 5196] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5196] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5196] chdir("./file1") = 0 [pid 5196] ioctl(4, LOOP_CLR_FD) = 0 [pid 5196] close(4) = 0 [pid 5196] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5196] creat("./file1", 0410) = 4 [pid 5196] exit_group(0) = ? [pid 5196] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5196, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [ 102.245159][ T5196] loop0: detected capacity change from 0 to 512 [ 102.258716][ T5196] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 102.274038][ T5196] EXT4-fs (loop0): 1 truncate cleaned up restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./62", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./62", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./62/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./62/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./62/binderfs") = 0 umount2("./62/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./62/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./62/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./62/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./62/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./62/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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./strace-static-x86_64: Process 5198 attached , child_tidptr=0x5555564d7650) = 5198 [pid 5198] set_robust_list(0x5555564d7660, 24) = 0 [pid 5198] chdir("./63") = 0 [pid 5198] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5198] setpgid(0, 0) = 0 [pid 5198] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5198] write(3, "1000", 4) = 4 [pid 5198] close(3) = 0 [pid 5198] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5198] memfd_create("syzkaller", 0) = 3 [pid 5198] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5198] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5198] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5198] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5198] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5198] close(3) = 0 [pid 5198] mkdir("./file1", 0777) = 0 [pid 5198] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5198] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5198] chdir("./file1") = 0 [pid 5198] ioctl(4, LOOP_CLR_FD) = 0 [pid 5198] close(4) = 0 [pid 5198] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5198] creat("./file1", 0410) = 4 [pid 5198] exit_group(0) = ? [pid 5198] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5198, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [ 102.516666][ T5198] loop0: detected capacity change from 0 to 512 [ 102.542704][ T5198] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 102.557574][ T5198] EXT4-fs (loop0): 1 truncate cleaned up 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 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./63/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./63/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./63/binderfs") = 0 umount2("./63/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./63/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./63/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./63/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./63/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./63/file1") = 0 getdents64(3, 0x5555564d86f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./63") = 0 mkdir("./64", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5200 attached , child_tidptr=0x5555564d7650) = 5200 [pid 5200] set_robust_list(0x5555564d7660, 24) = 0 [pid 5200] chdir("./64") = 0 [pid 5200] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5200] setpgid(0, 0) = 0 [pid 5200] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5200] write(3, "1000", 4) = 4 [pid 5200] close(3) = 0 [pid 5200] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5200] memfd_create("syzkaller", 0) = 3 [pid 5200] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5200] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5200] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5200] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5200] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5200] close(3) = 0 [pid 5200] mkdir("./file1", 0777) = 0 [pid 5200] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5200] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5200] chdir("./file1") = 0 [pid 5200] ioctl(4, LOOP_CLR_FD) = 0 [pid 5200] close(4) = 0 [pid 5200] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5200] creat("./file1", 0410) = 4 [ 102.789153][ T5200] loop0: detected capacity change from 0 to 512 [ 102.814143][ T5200] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 102.828989][ T5200] EXT4-fs (loop0): 1 truncate cleaned up [pid 5200] exit_group(0) = ? [pid 5200] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5200, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./64", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./64", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./64/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./64/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./64/binderfs") = 0 umount2("./64/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./64/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./64/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./64/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./64/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./64/file1") = 0 getdents64(3, 0x5555564d86f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./64") = 0 mkdir("./65", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5202 attached [pid 5202] set_robust_list(0x5555564d7660, 24) = 0 [pid 5202] chdir("./65") = 0 [pid 5202] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5202] setpgid(0, 0) = 0 [pid 5202] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5062] <... clone resumed>, child_tidptr=0x5555564d7650) = 5202 [pid 5202] <... openat resumed>) = 3 [pid 5202] write(3, "1000", 4) = 4 [pid 5202] close(3) = 0 [pid 5202] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5202] memfd_create("syzkaller", 0) = 3 [pid 5202] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5202] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5202] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5202] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5202] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5202] close(3) = 0 [pid 5202] mkdir("./file1", 0777) = 0 [pid 5202] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5202] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5202] chdir("./file1") = 0 [pid 5202] ioctl(4, LOOP_CLR_FD) = 0 [pid 5202] close(4) = 0 [pid 5202] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5202] creat("./file1", 0410) = 4 [pid 5202] exit_group(0) = ? [pid 5202] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5202, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./65", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 103.072314][ T5202] loop0: detected capacity change from 0 to 512 [ 103.087043][ T5202] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 103.101700][ T5202] EXT4-fs (loop0): 1 truncate cleaned up openat(AT_FDCWD, "./65", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./65/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./65/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./65/binderfs") = 0 umount2("./65/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./65/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./65/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./65/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./65/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./65/file1") = 0 getdents64(3, 0x5555564d86f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./65") = 0 mkdir("./66", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564d7650) = 5204 ./strace-static-x86_64: Process 5204 attached [pid 5204] set_robust_list(0x5555564d7660, 24) = 0 [pid 5204] chdir("./66") = 0 [pid 5204] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5204] setpgid(0, 0) = 0 [pid 5204] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5204] write(3, "1000", 4) = 4 [pid 5204] close(3) = 0 [pid 5204] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5204] memfd_create("syzkaller", 0) = 3 [pid 5204] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5204] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5204] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5204] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5204] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5204] close(3) = 0 [pid 5204] mkdir("./file1", 0777) = 0 [pid 5204] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5204] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5204] chdir("./file1") = 0 [pid 5204] ioctl(4, LOOP_CLR_FD) = 0 [pid 5204] close(4) = 0 [pid 5204] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5204] creat("./file1", 0410) = 4 [ 103.242686][ T5204] loop0: detected capacity change from 0 to 512 [ 103.266165][ T5204] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 103.281355][ T5204] EXT4-fs (loop0): 1 truncate cleaned up [pid 5204] exit_group(0) = ? [pid 5204] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5204, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./66", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./66", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./66/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./66/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./66/binderfs") = 0 umount2("./66/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./66/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./66/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./66/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./66/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./66/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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./strace-static-x86_64: Process 5206 attached [pid 5206] set_robust_list(0x5555564d7660, 24) = 0 [pid 5206] chdir("./67") = 0 [pid 5206] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5206] setpgid(0, 0) = 0 [pid 5206] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5062] <... clone resumed>, child_tidptr=0x5555564d7650) = 5206 [pid 5206] <... openat resumed>) = 3 [pid 5206] write(3, "1000", 4) = 4 [pid 5206] close(3) = 0 [pid 5206] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5206] memfd_create("syzkaller", 0) = 3 [pid 5206] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5206] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5206] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5206] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5206] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5206] close(3) = 0 [pid 5206] mkdir("./file1", 0777) = 0 [pid 5206] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5206] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5206] chdir("./file1") = 0 [pid 5206] ioctl(4, LOOP_CLR_FD) = 0 [pid 5206] close(4) = 0 [ 103.602894][ T5206] loop0: detected capacity change from 0 to 512 [ 103.622317][ T5206] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 103.637195][ T5206] EXT4-fs (loop0): 1 truncate cleaned up [pid 5206] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5206] creat("./file1", 0410) = 4 [pid 5206] exit_group(0) = ? [pid 5206] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5206, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./67", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./67", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./67/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./67/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./67/binderfs") = 0 umount2("./67/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./67/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./67/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./67/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./67/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./67/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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 5208 attached , child_tidptr=0x5555564d7650) = 5208 [pid 5208] set_robust_list(0x5555564d7660, 24) = 0 [pid 5208] chdir("./68") = 0 [pid 5208] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5208] setpgid(0, 0) = 0 [pid 5208] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5208] write(3, "1000", 4) = 4 [pid 5208] close(3) = 0 [pid 5208] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5208] memfd_create("syzkaller", 0) = 3 [pid 5208] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5208] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5208] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5208] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5208] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5208] close(3) = 0 [pid 5208] mkdir("./file1", 0777) = 0 [pid 5208] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5208] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5208] chdir("./file1") = 0 [pid 5208] ioctl(4, LOOP_CLR_FD) = 0 [pid 5208] close(4) = 0 [pid 5208] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [ 103.929072][ T5208] loop0: detected capacity change from 0 to 512 [ 103.938444][ T5208] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 103.953251][ T5208] EXT4-fs (loop0): 1 truncate cleaned up [pid 5208] creat("./file1", 0410) = 4 [pid 5208] exit_group(0) = ? [pid 5208] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5208, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./68", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./68", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./68/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./68/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./68/binderfs") = 0 umount2("./68/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./68/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./68/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./68/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./68/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./68/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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 5210 attached , child_tidptr=0x5555564d7650) = 5210 [pid 5210] set_robust_list(0x5555564d7660, 24) = 0 [pid 5210] chdir("./69") = 0 [pid 5210] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5210] setpgid(0, 0) = 0 [pid 5210] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5210] write(3, "1000", 4) = 4 [pid 5210] close(3) = 0 [pid 5210] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5210] memfd_create("syzkaller", 0) = 3 [pid 5210] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5210] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5210] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5210] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5210] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5210] close(3) = 0 [pid 5210] mkdir("./file1", 0777) = 0 [pid 5210] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5210] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5210] chdir("./file1") = 0 [pid 5210] ioctl(4, LOOP_CLR_FD) = 0 [pid 5210] close(4) = 0 [ 104.128452][ T5210] loop0: detected capacity change from 0 to 512 [ 104.142232][ T5210] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 104.157027][ T5210] EXT4-fs (loop0): 1 truncate cleaned up [pid 5210] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5210] creat("./file1", 0410) = 4 [pid 5210] exit_group(0) = ? [pid 5210] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5210, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./69", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./69", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./69/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./69/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./69/binderfs") = 0 umount2("./69/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./69/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./69/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./69/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./69/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./69/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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./strace-static-x86_64: Process 5212 attached , child_tidptr=0x5555564d7650) = 5212 [pid 5212] set_robust_list(0x5555564d7660, 24) = 0 [pid 5212] chdir("./70") = 0 [pid 5212] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5212] setpgid(0, 0) = 0 [pid 5212] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5212] write(3, "1000", 4) = 4 [pid 5212] close(3) = 0 [pid 5212] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5212] memfd_create("syzkaller", 0) = 3 [pid 5212] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5212] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5212] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5212] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5212] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5212] close(3) = 0 [pid 5212] mkdir("./file1", 0777) = 0 [pid 5212] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5212] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5212] chdir("./file1") = 0 [pid 5212] ioctl(4, LOOP_CLR_FD) = 0 [pid 5212] close(4) = 0 [ 104.464127][ T5212] loop0: detected capacity change from 0 to 512 [ 104.489303][ T5212] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 104.504277][ T5212] EXT4-fs (loop0): 1 truncate cleaned up [pid 5212] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5212] creat("./file1", 0410) = 4 [pid 5212] exit_group(0) = ? [pid 5212] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5212, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./70", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./70", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./70/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./70/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./70/binderfs") = 0 umount2("./70/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./70/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./70/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./70/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./70/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./70/file1") = 0 getdents64(3, 0x5555564d86f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./70") = 0 mkdir("./71", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5214 attached , child_tidptr=0x5555564d7650) = 5214 [pid 5214] set_robust_list(0x5555564d7660, 24) = 0 [pid 5214] chdir("./71") = 0 [pid 5214] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5214] setpgid(0, 0) = 0 [pid 5214] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5214] write(3, "1000", 4) = 4 [pid 5214] close(3) = 0 [pid 5214] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5214] memfd_create("syzkaller", 0) = 3 [pid 5214] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5214] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5214] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5214] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5214] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5214] close(3) = 0 [pid 5214] mkdir("./file1", 0777) = 0 [pid 5214] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5214] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5214] chdir("./file1") = 0 [pid 5214] ioctl(4, LOOP_CLR_FD) = 0 [pid 5214] close(4) = 0 [ 104.841021][ T5214] loop0: detected capacity change from 0 to 512 [ 104.865426][ T5214] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 104.880760][ T5214] EXT4-fs (loop0): 1 truncate cleaned up [pid 5214] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5214] creat("./file1", 0410) = 4 [pid 5214] exit_group(0) = ? [pid 5214] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5214, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./71", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./71", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./71/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./71/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./71/binderfs") = 0 umount2("./71/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./71/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./71/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./71/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./71/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./71/file1") = 0 getdents64(3, 0x5555564d86f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./71") = 0 mkdir("./72", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5216 attached [pid 5216] set_robust_list(0x5555564d7660, 24) = 0 [pid 5216] chdir("./72") = 0 [pid 5216] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5216] setpgid(0, 0) = 0 [pid 5062] <... clone resumed>, child_tidptr=0x5555564d7650) = 5216 [pid 5216] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5216] write(3, "1000", 4) = 4 [pid 5216] close(3) = 0 [pid 5216] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5216] memfd_create("syzkaller", 0) = 3 [pid 5216] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5216] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5216] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5216] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5216] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5216] close(3) = 0 [pid 5216] mkdir("./file1", 0777) = 0 [pid 5216] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5216] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5216] chdir("./file1") = 0 [pid 5216] ioctl(4, LOOP_CLR_FD) = 0 [pid 5216] close(4) = 0 [ 105.181942][ T5216] loop0: detected capacity change from 0 to 512 [ 105.199158][ T5216] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 105.213967][ T5216] EXT4-fs (loop0): 1 truncate cleaned up [pid 5216] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5216] creat("./file1", 0410) = 4 [pid 5216] exit_group(0) = ? [pid 5216] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5216, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./72", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./72", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./72/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./72/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./72/binderfs") = 0 umount2("./72/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./72/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./72/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./72/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./72/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./72/file1") = 0 getdents64(3, 0x5555564d86f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./72") = 0 mkdir("./73", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564d7650) = 5218 ./strace-static-x86_64: Process 5218 attached [pid 5218] set_robust_list(0x5555564d7660, 24) = 0 [pid 5218] chdir("./73") = 0 [pid 5218] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5218] setpgid(0, 0) = 0 [pid 5218] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5218] write(3, "1000", 4) = 4 [pid 5218] close(3) = 0 [pid 5218] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5218] memfd_create("syzkaller", 0) = 3 [pid 5218] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5218] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5218] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5218] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5218] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5218] close(3) = 0 [pid 5218] mkdir("./file1", 0777) = 0 [pid 5218] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5218] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5218] chdir("./file1") = 0 [pid 5218] ioctl(4, LOOP_CLR_FD) = 0 [pid 5218] close(4) = 0 [ 105.560788][ T5218] loop0: detected capacity change from 0 to 512 [ 105.575908][ T5218] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 105.591332][ T5218] EXT4-fs (loop0): 1 truncate cleaned up [pid 5218] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5218] creat("./file1", 0410) = 4 [pid 5218] exit_group(0) = ? [pid 5218] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5218, si_uid=0, si_status=0, si_utime=0, si_stime=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 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./73/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./73/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./73/binderfs") = 0 umount2("./73/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./73/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./73/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./73/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./73/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./73/file1") = 0 getdents64(3, 0x5555564d86f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./73") = 0 mkdir("./74", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5221 attached , child_tidptr=0x5555564d7650) = 5221 [pid 5221] set_robust_list(0x5555564d7660, 24) = 0 [pid 5221] chdir("./74") = 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) = 0x7f3b75a5a000 [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(0x7f3b75a5a000, 138412032) = 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("./file1", 0777) = 0 [pid 5221] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5221] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5221] chdir("./file1") = 0 [pid 5221] ioctl(4, LOOP_CLR_FD) = 0 [pid 5221] close(4) = 0 [pid 5221] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5221] creat("./file1", 0410) = 4 [ 105.925388][ T5221] loop0: detected capacity change from 0 to 512 [ 105.939677][ T5221] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 105.955112][ T5221] EXT4-fs (loop0): 1 truncate cleaned up [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=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./74", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./74", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./74/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./74/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./74/binderfs") = 0 umount2("./74/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./74/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./74/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./74/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./74/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./74/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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 5223 attached [pid 5223] set_robust_list(0x5555564d7660, 24) = 0 [pid 5223] chdir("./75" [pid 5062] <... clone resumed>, child_tidptr=0x5555564d7650) = 5223 [pid 5223] <... chdir resumed>) = 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) = 0x7f3b75a5a000 [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(0x7f3b75a5a000, 138412032) = 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("./file1", 0777) = 0 [pid 5223] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5223] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5223] chdir("./file1") = 0 [pid 5223] ioctl(4, LOOP_CLR_FD) = 0 [pid 5223] close(4) = 0 [pid 5223] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5223] creat("./file1", 0410) = 4 [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=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 [ 106.238942][ T5223] loop0: detected capacity change from 0 to 512 [ 106.254408][ T5223] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 106.269719][ T5223] EXT4-fs (loop0): 1 truncate cleaned up umount2("./75", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./75", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./75/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./75/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./75/binderfs") = 0 umount2("./75/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./75/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./75/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./75/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./75/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./75/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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./strace-static-x86_64: Process 5225 attached , child_tidptr=0x5555564d7650) = 5225 [pid 5225] set_robust_list(0x5555564d7660, 24) = 0 [pid 5225] chdir("./76") = 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) = 0x7f3b75a5a000 [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(0x7f3b75a5a000, 138412032) = 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("./file1", 0777) = 0 [pid 5225] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5225] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5225] chdir("./file1") = 0 [pid 5225] ioctl(4, LOOP_CLR_FD) = 0 [pid 5225] close(4) = 0 [ 106.457264][ T5225] loop0: detected capacity change from 0 to 512 [ 106.471544][ T5225] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 106.485971][ T5225] EXT4-fs (loop0): 1 truncate cleaned up [pid 5225] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5225] creat("./file1", 0410) = 4 [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=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./76", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./76", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./76/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./76/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./76/binderfs") = 0 umount2("./76/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./76/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./76/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./76/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./76/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./76/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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./strace-static-x86_64: Process 5227 attached , child_tidptr=0x5555564d7650) = 5227 [pid 5227] set_robust_list(0x5555564d7660, 24) = 0 [pid 5227] chdir("./77") = 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) = 0x7f3b75a5a000 [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(0x7f3b75a5a000, 138412032) = 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("./file1", 0777) = 0 [pid 5227] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5227] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5227] chdir("./file1") = 0 [pid 5227] ioctl(4, LOOP_CLR_FD) = 0 [pid 5227] close(4) = 0 [pid 5227] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [ 106.771425][ T5227] loop0: detected capacity change from 0 to 512 [ 106.796051][ T5227] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 106.811219][ T5227] EXT4-fs (loop0): 1 truncate cleaned up [pid 5227] creat("./file1", 0410) = 4 [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=2 /* 0.02 s */} --- umount2("./77", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./77", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./77/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./77/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./77/binderfs") = 0 umount2("./77/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./77/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./77/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./77/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./77/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./77/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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./strace-static-x86_64: Process 5229 attached , child_tidptr=0x5555564d7650) = 5229 [pid 5229] set_robust_list(0x5555564d7660, 24) = 0 [pid 5229] chdir("./78") = 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) = 0x7f3b75a5a000 [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(0x7f3b75a5a000, 138412032) = 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("./file1", 0777) = 0 [pid 5229] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5229] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5229] chdir("./file1") = 0 [pid 5229] ioctl(4, LOOP_CLR_FD) = 0 [pid 5229] close(4) = 0 [pid 5229] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5229] creat("./file1", 0410) = 4 [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=2 /* 0.02 s */} --- umount2("./78", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./78", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [ 107.128432][ T5229] loop0: detected capacity change from 0 to 512 [ 107.143266][ T5229] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 107.158147][ T5229] EXT4-fs (loop0): 1 truncate cleaned up getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./78/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./78/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./78/binderfs") = 0 umount2("./78/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./78/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./78/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./78/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./78/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./78/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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./strace-static-x86_64: Process 5231 attached , child_tidptr=0x5555564d7650) = 5231 [pid 5231] set_robust_list(0x5555564d7660, 24) = 0 [pid 5231] chdir("./79") = 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) = 0x7f3b75a5a000 [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(0x7f3b75a5a000, 138412032) = 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("./file1", 0777) = 0 [pid 5231] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5231] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5231] chdir("./file1") = 0 [pid 5231] ioctl(4, LOOP_CLR_FD) = 0 [pid 5231] close(4) = 0 [pid 5231] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5231] creat("./file1", 0410) = 4 [pid 5231] exit_group(0) = ? [ 107.425678][ T5231] loop0: detected capacity change from 0 to 512 [ 107.441061][ T5231] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 107.455978][ T5231] EXT4-fs (loop0): 1 truncate cleaned up [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=5 /* 0.05 s */} --- umount2("./79", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./79", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./79/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./79/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./79/binderfs") = 0 umount2("./79/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./79/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./79/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./79/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./79/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./79/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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=0x5555564d7650) = 5233 ./strace-static-x86_64: Process 5233 attached [pid 5233] set_robust_list(0x5555564d7660, 24) = 0 [pid 5233] chdir("./80") = 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) = 0x7f3b75a5a000 [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(0x7f3b75a5a000, 138412032) = 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("./file1", 0777) = 0 [pid 5233] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5233] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5233] chdir("./file1") = 0 [pid 5233] ioctl(4, LOOP_CLR_FD) = 0 [pid 5233] close(4) = 0 [ 107.770498][ T5233] loop0: detected capacity change from 0 to 512 [ 107.794272][ T5233] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 107.809230][ T5233] EXT4-fs (loop0): 1 truncate cleaned up [pid 5233] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5233] creat("./file1", 0410) = 4 [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=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./80", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./80", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./80/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./80/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./80/binderfs") = 0 umount2("./80/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./80/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./80/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./80/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./80/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./80/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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 5235 attached , child_tidptr=0x5555564d7650) = 5235 [pid 5235] set_robust_list(0x5555564d7660, 24) = 0 [pid 5235] chdir("./81") = 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) = 0x7f3b75a5a000 [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(0x7f3b75a5a000, 138412032) = 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("./file1", 0777) = 0 [pid 5235] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5235] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5235] chdir("./file1") = 0 [pid 5235] ioctl(4, LOOP_CLR_FD) = 0 [pid 5235] close(4) = 0 [pid 5235] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5235] creat("./file1", 0410) = 4 [pid 5235] exit_group(0) = ? [ 108.089066][ T5235] loop0: detected capacity change from 0 to 512 [ 108.103302][ T5235] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 108.118691][ T5235] EXT4-fs (loop0): 1 truncate cleaned up [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("./81", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./81", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./81/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./81/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./81/binderfs") = 0 umount2("./81/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./81/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./81/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./81/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./81/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./81/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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 5238 attached [pid 5238] set_robust_list(0x5555564d7660, 24) = 0 [pid 5238] chdir("./82" [pid 5062] <... clone resumed>, child_tidptr=0x5555564d7650) = 5238 [pid 5238] <... chdir resumed>) = 0 [pid 5238] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5238] setpgid(0, 0) = 0 [pid 5238] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5238] write(3, "1000", 4) = 4 [pid 5238] close(3) = 0 [pid 5238] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5238] memfd_create("syzkaller", 0) = 3 [pid 5238] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5238] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5238] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5238] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5238] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5238] close(3) = 0 [pid 5238] mkdir("./file1", 0777) = 0 [ 108.504269][ T5238] loop0: detected capacity change from 0 to 512 [ 108.535280][ T5238] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [pid 5238] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5238] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5238] chdir("./file1") = 0 [pid 5238] ioctl(4, LOOP_CLR_FD) = 0 [pid 5238] close(4) = 0 [pid 5238] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5238] creat("./file1", 0410) = 4 [pid 5238] exit_group(0) = ? [pid 5238] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5238, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./82", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./82", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./82/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./82/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./82/binderfs") = 0 [ 108.550874][ T5238] EXT4-fs (loop0): 1 truncate cleaned up umount2("./82/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./82/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./82/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./82/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./82/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./82/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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./strace-static-x86_64: Process 5240 attached , child_tidptr=0x5555564d7650) = 5240 [pid 5240] set_robust_list(0x5555564d7660, 24) = 0 [pid 5240] chdir("./83") = 0 [pid 5240] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5240] setpgid(0, 0) = 0 [pid 5240] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5240] write(3, "1000", 4) = 4 [pid 5240] close(3) = 0 [pid 5240] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5240] memfd_create("syzkaller", 0) = 3 [pid 5240] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5240] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5240] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5240] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5240] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5240] close(3) = 0 [pid 5240] mkdir("./file1", 0777) = 0 [ 108.746201][ T5240] loop0: detected capacity change from 0 to 512 [ 108.760181][ T5240] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 108.775483][ T5240] EXT4-fs (loop0): 1 truncate cleaned up [ 108.782068][ T5240] EXT4-fs mount: 102 callbacks suppressed [pid 5240] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5240] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5240] chdir("./file1") = 0 [pid 5240] ioctl(4, LOOP_CLR_FD) = 0 [pid 5240] close(4) = 0 [pid 5240] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5240] creat("./file1", 0410) = 4 [pid 5240] exit_group(0) = ? [pid 5240] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5240, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [ 108.782082][ T5240] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. umount2("./83", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./83", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./83/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./83/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./83/binderfs") = 0 umount2("./83/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./83/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./83/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./83/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./83/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 [ 108.900955][ T5062] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. close(4) = 0 rmdir("./83/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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./strace-static-x86_64: Process 5242 attached [pid 5242] set_robust_list(0x5555564d7660, 24) = 0 [pid 5242] chdir("./84") = 0 [pid 5242] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5242] setpgid(0, 0) = 0 [pid 5242] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5062] <... clone resumed>, child_tidptr=0x5555564d7650) = 5242 [pid 5242] <... openat resumed>) = 3 [pid 5242] write(3, "1000", 4) = 4 [pid 5242] close(3) = 0 [pid 5242] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5242] memfd_create("syzkaller", 0) = 3 [pid 5242] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5242] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5242] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5242] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5242] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5242] close(3) = 0 [pid 5242] mkdir("./file1", 0777) = 0 [ 109.079221][ T5242] loop0: detected capacity change from 0 to 512 [ 109.098618][ T5242] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 109.113506][ T5242] EXT4-fs (loop0): 1 truncate cleaned up [pid 5242] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5242] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5242] chdir("./file1") = 0 [pid 5242] ioctl(4, LOOP_CLR_FD) = 0 [pid 5242] close(4) = 0 [ 109.119181][ T5242] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5242] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5242] creat("./file1", 0410) = 4 [pid 5242] exit_group(0) = ? [pid 5242] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5242, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./84", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./84", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./84/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./84/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./84/binderfs") = 0 umount2("./84/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./84/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./84/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./84/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./84/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./84/file1") = 0 [ 109.241051][ T5062] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. getdents64(3, 0x5555564d86f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./84") = 0 mkdir("./85", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5244 attached [pid 5244] set_robust_list(0x5555564d7660, 24) = 0 [pid 5244] chdir("./85") = 0 [pid 5244] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5062] <... clone resumed>, child_tidptr=0x5555564d7650) = 5244 [pid 5244] setpgid(0, 0) = 0 [pid 5244] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5244] write(3, "1000", 4) = 4 [pid 5244] close(3) = 0 [pid 5244] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5244] memfd_create("syzkaller", 0) = 3 [pid 5244] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5244] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5244] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5244] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5244] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5244] close(3) = 0 [pid 5244] mkdir("./file1", 0777) = 0 [pid 5244] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5244] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5244] chdir("./file1") = 0 [pid 5244] ioctl(4, LOOP_CLR_FD) = 0 [pid 5244] close(4) = 0 [ 109.432225][ T5244] loop0: detected capacity change from 0 to 512 [ 109.446304][ T5244] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 109.461627][ T5244] EXT4-fs (loop0): 1 truncate cleaned up [ 109.467476][ T5244] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5244] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5244] creat("./file1", 0410) = 4 [pid 5244] exit_group(0) = ? [pid 5244] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5244, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- umount2("./85", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./85", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./85/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./85/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./85/binderfs") = 0 umount2("./85/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./85/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./85/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./85/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./85/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [ 109.594110][ T5062] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./85/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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./strace-static-x86_64: Process 5246 attached [pid 5246] set_robust_list(0x5555564d7660, 24) = 0 [pid 5246] chdir("./86") = 0 [pid 5246] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5246] setpgid(0, 0) = 0 [pid 5246] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5062] <... clone resumed>, child_tidptr=0x5555564d7650) = 5246 [pid 5246] <... openat resumed>) = 3 [pid 5246] write(3, "1000", 4) = 4 [pid 5246] close(3) = 0 [pid 5246] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5246] memfd_create("syzkaller", 0) = 3 [pid 5246] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5246] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5246] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5246] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5246] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5246] close(3) = 0 [pid 5246] mkdir("./file1", 0777) = 0 [ 109.795215][ T5246] loop0: detected capacity change from 0 to 512 [ 109.811324][ T5246] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 109.827646][ T5246] EXT4-fs (loop0): 1 truncate cleaned up [pid 5246] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5246] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5246] chdir("./file1") = 0 [pid 5246] ioctl(4, LOOP_CLR_FD) = 0 [pid 5246] close(4) = 0 [pid 5246] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5246] creat("./file1", 0410) = 4 [ 109.834178][ T5246] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5246] exit_group(0) = ? [pid 5246] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5246, si_uid=0, si_status=0, si_utime=0, si_stime=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 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./86/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./86/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./86/binderfs") = 0 umount2("./86/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./86/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./86/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./86/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./86/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./86/file1") = 0 getdents64(3, 0x5555564d86f0 /* 0 entries */, 32768) = 0 [ 110.015313][ T5062] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. 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 5248 attached [pid 5248] set_robust_list(0x5555564d7660, 24) = 0 [pid 5248] chdir("./87") = 0 [pid 5248] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5248] setpgid(0, 0) = 0 [pid 5248] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5062] <... clone resumed>, child_tidptr=0x5555564d7650) = 5248 [pid 5248] <... openat resumed>) = 3 [pid 5248] write(3, "1000", 4) = 4 [pid 5248] close(3) = 0 [pid 5248] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5248] memfd_create("syzkaller", 0) = 3 [pid 5248] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5248] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5248] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5248] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5248] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5248] close(3) = 0 [pid 5248] mkdir("./file1", 0777) = 0 [ 110.151529][ T5248] loop0: detected capacity change from 0 to 512 [ 110.175855][ T5248] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 110.190680][ T5248] EXT4-fs (loop0): 1 truncate cleaned up [pid 5248] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5248] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5248] chdir("./file1") = 0 [pid 5248] ioctl(4, LOOP_CLR_FD) = 0 [pid 5248] close(4) = 0 [pid 5248] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5248] creat("./file1", 0410) = 4 [pid 5248] exit_group(0) = ? [pid 5248] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5248, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./87", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./87", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [ 110.196334][ T5248] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./87/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./87/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./87/binderfs") = 0 umount2("./87/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./87/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./87/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./87/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./87/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 [ 110.287521][ T5062] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. close(4) = 0 rmdir("./87/file1") = 0 getdents64(3, 0x5555564d86f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./87") = 0 mkdir("./88", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5250 attached , child_tidptr=0x5555564d7650) = 5250 [pid 5250] set_robust_list(0x5555564d7660, 24) = 0 [pid 5250] chdir("./88") = 0 [pid 5250] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5250] setpgid(0, 0) = 0 [pid 5250] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5250] write(3, "1000", 4) = 4 [pid 5250] close(3) = 0 [pid 5250] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5250] memfd_create("syzkaller", 0) = 3 [pid 5250] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5250] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5250] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5250] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5250] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5250] close(3) = 0 [pid 5250] mkdir("./file1", 0777) = 0 [pid 5250] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5250] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5250] chdir("./file1") = 0 [pid 5250] ioctl(4, LOOP_CLR_FD) = 0 [pid 5250] close(4) = 0 [pid 5250] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5250] creat("./file1", 0410) = 4 [ 110.467464][ T5250] loop0: detected capacity change from 0 to 512 [ 110.482652][ T5250] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 110.497323][ T5250] EXT4-fs (loop0): 1 truncate cleaned up [ 110.503220][ T5250] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5250] exit_group(0) = ? [pid 5250] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5250, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./88", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./88", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./88/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./88/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./88/binderfs") = 0 umount2("./88/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./88/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./88/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./88/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./88/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [ 110.581380][ T5062] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./88/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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./strace-static-x86_64: Process 5252 attached , child_tidptr=0x5555564d7650) = 5252 [pid 5252] set_robust_list(0x5555564d7660, 24) = 0 [pid 5252] chdir("./89") = 0 [pid 5252] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5252] setpgid(0, 0) = 0 [pid 5252] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5252] write(3, "1000", 4) = 4 [pid 5252] close(3) = 0 [pid 5252] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5252] memfd_create("syzkaller", 0) = 3 [pid 5252] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5252] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5252] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5252] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5252] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5252] close(3) = 0 [pid 5252] mkdir("./file1", 0777) = 0 [ 110.771963][ T5252] loop0: detected capacity change from 0 to 512 [ 110.794375][ T5252] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 110.808986][ T5252] EXT4-fs (loop0): 1 truncate cleaned up [pid 5252] mount("/dev/loop0", "./file1", "ext4", 0, "inode_readahead_blks=0x0000000000000000,nogrpid,debug_want_extra_isize=0x0000000000000066,dioread_no"...) = 0 [pid 5252] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5252] chdir("./file1") = 0 [pid 5252] ioctl(4, LOOP_CLR_FD) = 0 [pid 5252] close(4) = 0 [ 110.814747][ T5252] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5252] setxattr("./file1", "user.incfs.metadata", "\x3b\xca\x3e\x8e\xec\x60\xdb\x6d\xa7\x28\xee\x8e\x29\xfa\x00\xfa\x21\x03\x9b\x37\x80\xdd\x17\x54\x0b\xcd\xff\x62\xd7\x13\x4b\xa5\x3e\x25\xf5\x9a\xf9\x2d\xd4\x65\xa8\x39\x65\x8e\xad\x1f\x48\xc4\x42\xf9\x96\xdd\x68\x49\x56\xb1\x12\x67\xdb\x59\xfd\x65\x72\x81\xe9\x0a\x34\xe6\x3a\x4a\x3f\xeb\x92\xde\x49\xe5\x7c\xea\x7f\xec\x40\xeb\x97\x08\xf4\xc4\x39\x65\xc6\xae\x13\x8b\x7e\x6a\xe8\x40\x58\x14\x26\x34"..., 881, 0) = 0 [pid 5252] creat("./file1", 0410) = 4 [pid 5252] exit_group(0) = ? [pid 5252] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5252, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./89", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./89", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555564d86f0 /* 4 entries */, 32768) = 112 umount2("./89/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./89/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./89/binderfs") = 0 umount2("./89/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./89/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./89/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./89/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./89/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555564e0730 /* 2 entries */, 32768) = 48 getdents64(4, 0x5555564e0730 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./89/file1") = 0 getdents64(3, 0x5555564d86f0 /* 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) [ 110.963878][ T5062] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5254 attached [pid 5254] set_robust_list(0x5555564d7660, 24) = 0 [pid 5254] chdir("./90" [pid 5062] <... clone resumed>, child_tidptr=0x5555564d7650) = 5254 [pid 5254] <... chdir resumed>) = 0 [pid 5254] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5254] setpgid(0, 0) = 0 [pid 5254] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5254] write(3, "1000", 4) = 4 [pid 5254] close(3) = 0 [pid 5254] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5254] memfd_create("syzkaller", 0) = 3 [pid 5254] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3b75a5a000 [pid 5254] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5254] munmap(0x7f3b75a5a000, 138412032) = 0 [pid 5254] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5254] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5254] close(3) = 0 [pid 5254] mkdir("./file1", 0777) = 0