./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2423021961 <...> Warning: Permanently added '10.128.1.90' (ED25519) to the list of known hosts. execve("./syz-executor2423021961", ["./syz-executor2423021961"], 0x7ffc28a4c280 /* 10 vars */) = 0 brk(NULL) = 0x555555e6e000 brk(0x555555e6ed00) = 0x555555e6ed00 arch_prctl(ARCH_SET_FS, 0x555555e6e380) = 0 set_tid_address(0x555555e6e650) = 358 set_robust_list(0x555555e6e660, 24) = 0 rseq(0x555555e6eca0, 0x20, 0, 0x53053053) = -1 ENOSYS (Function not implemented) prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2423021961", 4096) = 28 getrandom("\x1b\x8d\xdf\x50\x92\x37\x3c\x7f", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555555e6ed00 brk(0x555555e8fd00) = 0x555555e8fd00 brk(0x555555e90000) = 0x555555e90000 mprotect(0x7f1c8c812000, 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 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555e6e650) = 359 ./strace-static-x86_64: Process 359 attached [pid 359] set_robust_list(0x555555e6e660, 24) = 0 [pid 359] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 359] setpgid(0, 0) = 0 [pid 359] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 359] write(3, "1000", 4) = 4 [pid 359] close(3) = 0 [pid 359] memfd_create("syzkaller", 0) = 3 [pid 359] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1c84360000 [pid 359] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 359] munmap(0x7f1c84360000, 262144) = 0 [pid 359] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 359] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 359] close(3) = 0 [pid 359] mkdir("./file0", 0777) = 0 [ 25.387128][ T23] audit: type=1400 audit(1691918793.250:66): avc: denied { execmem } for pid=358 comm="syz-executor242" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 25.407203][ T23] audit: type=1400 audit(1691918793.250:67): avc: denied { read write } for pid=358 comm="syz-executor242" name="loop0" dev="devtmpfs" ino=1149 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [pid 359] mount("/dev/loop0", "./file0", "ext2", MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_POSIXACL|MS_RELATIME, "\xff\xff\xff\xff\x2c\x65\x72\x72\x6f\x72\x73\x3d\x63\x6f\x6e\x74\x69\x6e\x75\x65") = -1 EINVAL (Invalid argument) [ 25.431596][ T23] audit: type=1400 audit(1691918793.250:68): avc: denied { open } for pid=358 comm="syz-executor242" path="/dev/loop0" dev="devtmpfs" ino=1149 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 25.437532][ T359] EXT4-fs (loop0): Unrecognized mount option "ÿÿÿÿ" or missing value [pid 359] ioctl(4, LOOP_CLR_FD) = 0 [pid 359] close(4) = 0 [ 25.455651][ T23] audit: type=1400 audit(1691918793.250:69): avc: denied { ioctl } for pid=358 comm="syz-executor242" path="/dev/loop0" dev="devtmpfs" ino=1149 ioctlcmd=0x4c01 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 25.488994][ T23] audit: type=1400 audit(1691918793.270:70): avc: denied { mounton } for pid=359 comm="syz-executor242" path="/root/file0" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 25.524298][ T128] blk_update_request: I/O error, dev loop0, sector 2 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 [pid 359] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EINVAL (Invalid argument) [pid 359] exit_group(0) = ? [pid 359] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=359, si_uid=0, si_status=0, si_utime=0, si_stime=4} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555e6e650) = 362 ./strace-static-x86_64: Process 362 attached [pid 362] set_robust_list(0x555555e6e660, 24) = 0 [pid 362] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 362] setpgid(0, 0) = 0 [pid 362] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 362] write(3, "1000", 4) = 4 [pid 362] close(3) = 0 [pid 362] memfd_create("syzkaller", 0) = 3 [pid 362] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1c84360000 [pid 362] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 362] munmap(0x7f1c84360000, 262144) = 0 [pid 362] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 362] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 362] close(3) = 0 [pid 362] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 362] mount("/dev/loop0", "./file0", "ext2", MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_POSIXACL|MS_RELATIME, "\xff\xff\xff\xff\x2c\x65\x72\x72\x6f\x72\x73\x3d\x63\x6f\x6e\x74\x69\x6e\x75\x65") = -1 EINVAL (Invalid argument) [pid 362] ioctl(4, LOOP_CLR_FD) = 0 [pid 362] close(4) = 0 [ 25.535019][ T359] EXT4-fs (loop0): unable to read superblock [ 25.553020][ T362] EXT4-fs (loop0): Unrecognized mount option "ÿÿÿÿ" or missing value [pid 362] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EINVAL (Invalid argument) [pid 362] exit_group(0) = ? [pid 362] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=362, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_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 364 attached , child_tidptr=0x555555e6e650) = 364 [pid 364] set_robust_list(0x555555e6e660, 24) = 0 [pid 364] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 364] setpgid(0, 0) = 0 [pid 364] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 364] write(3, "1000", 4) = 4 [pid 364] close(3) = 0 [pid 364] memfd_create("syzkaller", 0) = 3 [pid 364] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1c84360000 [pid 364] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 364] munmap(0x7f1c84360000, 262144) = 0 [pid 364] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 364] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 364] close(3) = 0 [pid 364] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 364] mount("/dev/loop0", "./file0", "ext2", MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_POSIXACL|MS_RELATIME, "\xff\xff\xff\xff\x2c\x65\x72\x72\x6f\x72\x73\x3d\x63\x6f\x6e\x74\x69\x6e\x75\x65") = -1 EINVAL (Invalid argument) [pid 364] ioctl(4, LOOP_CLR_FD) = 0 [pid 364] close(4) = 0 [ 25.598371][ T128] blk_update_request: I/O error, dev loop0, sector 2 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 [ 25.609063][ T362] EXT4-fs (loop0): unable to read superblock [ 25.631097][ T364] EXT4-fs (loop0): Unrecognized mount option "ÿÿÿÿ" or missing value [pid 364] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EINVAL (Invalid argument) [pid 364] exit_group(0) = ? [pid 364] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=364, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555e6e650) = 367 ./strace-static-x86_64: Process 367 attached [pid 367] set_robust_list(0x555555e6e660, 24) = 0 [pid 367] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 367] setpgid(0, 0) = 0 [pid 367] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 367] write(3, "1000", 4) = 4 [pid 367] close(3) = 0 [pid 367] memfd_create("syzkaller", 0) = 3 [pid 367] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1c84360000 [pid 367] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 367] munmap(0x7f1c84360000, 262144) = 0 [pid 367] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 367] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 367] close(3) = 0 [pid 367] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 367] mount("/dev/loop0", "./file0", "ext2", MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_POSIXACL|MS_RELATIME, "\xff\xff\xff\xff\x2c\x65\x72\x72\x6f\x72\x73\x3d\x63\x6f\x6e\x74\x69\x6e\x75\x65") = -1 EINVAL (Invalid argument) [pid 367] ioctl(4, LOOP_CLR_FD) = 0 [pid 367] close(4) = 0 [ 25.668705][ T128] blk_update_request: I/O error, dev loop0, sector 2 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 [ 25.679465][ T364] EXT4-fs (loop0): unable to read superblock [ 25.704367][ T367] EXT4-fs (loop0): Unrecognized mount option "ÿÿÿÿ" or missing value [pid 367] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EINVAL (Invalid argument) [pid 367] exit_group(0) = ? [pid 367] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=367, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555e6e650) = 369 ./strace-static-x86_64: Process 369 attached [pid 369] set_robust_list(0x555555e6e660, 24) = 0 [pid 369] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 369] setpgid(0, 0) = 0 [pid 369] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 369] write(3, "1000", 4) = 4 [pid 369] close(3) = 0 [pid 369] memfd_create("syzkaller", 0) = 3 [pid 369] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1c84360000 [pid 369] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 369] munmap(0x7f1c84360000, 262144) = 0 [pid 369] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 369] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 369] close(3) = 0 [pid 369] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 369] mount("/dev/loop0", "./file0", "ext2", MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_POSIXACL|MS_RELATIME, "\xff\xff\xff\xff\x2c\x65\x72\x72\x6f\x72\x73\x3d\x63\x6f\x6e\x74\x69\x6e\x75\x65") = -1 EINVAL (Invalid argument) [pid 369] ioctl(4, LOOP_CLR_FD) = 0 [pid 369] close(4) = 0 [ 25.744240][ T128] blk_update_request: I/O error, dev loop0, sector 2 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 [ 25.754957][ T367] EXT4-fs (loop0): unable to read superblock [ 25.784218][ T369] EXT4-fs (loop0): Unrecognized mount option "ÿÿÿÿ" or missing value [pid 369] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EINVAL (Invalid argument) [pid 369] exit_group(0) = ? [pid 369] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=369, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555e6e650) = 371 ./strace-static-x86_64: Process 371 attached [pid 371] set_robust_list(0x555555e6e660, 24) = 0 [pid 371] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 371] setpgid(0, 0) = 0 [pid 371] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 371] write(3, "1000", 4) = 4 [pid 371] close(3) = 0 [pid 371] memfd_create("syzkaller", 0) = 3 [pid 371] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1c84360000 [pid 371] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 371] munmap(0x7f1c84360000, 262144) = 0 [pid 371] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 371] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 371] close(3) = 0 [pid 371] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 371] mount("/dev/loop0", "./file0", "ext2", MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_POSIXACL|MS_RELATIME, "\xff\xff\xff\xff\x2c\x65\x72\x72\x6f\x72\x73\x3d\x63\x6f\x6e\x74\x69\x6e\x75\x65") = -1 EINVAL (Invalid argument) [ 25.818269][ T128] blk_update_request: I/O error, dev loop0, sector 2 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 [ 25.829005][ T369] EXT4-fs (loop0): unable to read superblock [ 25.847842][ T371] EXT4-fs (loop0): Unrecognized mount option "ÿÿÿÿ" or missing value [pid 371] ioctl(4, LOOP_CLR_FD) = 0 [pid 371] close(4) = 0 [pid 371] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EINVAL (Invalid argument) [pid 371] exit_group(0) = ? [pid 371] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=371, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555e6e650) = 373 ./strace-static-x86_64: Process 373 attached [pid 373] set_robust_list(0x555555e6e660, 24) = 0 [pid 373] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 373] setpgid(0, 0) = 0 [pid 373] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 373] write(3, "1000", 4) = 4 [pid 373] close(3) = 0 [pid 373] memfd_create("syzkaller", 0) = 3 [pid 373] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1c84360000 [pid 373] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 373] munmap(0x7f1c84360000, 262144) = 0 [pid 373] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 373] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 373] close(3) = 0 [pid 373] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 373] mount("/dev/loop0", "./file0", "ext2", MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_POSIXACL|MS_RELATIME, "\xff\xff\xff\xff\x2c\x65\x72\x72\x6f\x72\x73\x3d\x63\x6f\x6e\x74\x69\x6e\x75\x65") = -1 EINVAL (Invalid argument) [pid 373] ioctl(4, LOOP_CLR_FD) = 0 [pid 373] close(4) = 0 [ 25.878394][ T128] blk_update_request: I/O error, dev loop0, sector 2 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 [ 25.889129][ T371] EXT4-fs (loop0): unable to read superblock [ 25.908203][ T373] EXT4-fs (loop0): Unrecognized mount option "ÿÿÿÿ" or missing value [pid 373] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EINVAL (Invalid argument) [pid 373] exit_group(0) = ? [pid 373] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=373, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555e6e650) = 375 ./strace-static-x86_64: Process 375 attached [pid 375] set_robust_list(0x555555e6e660, 24) = 0 [pid 375] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 375] setpgid(0, 0) = 0 [pid 375] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 375] write(3, "1000", 4) = 4 [pid 375] close(3) = 0 [pid 375] memfd_create("syzkaller", 0) = 3 [pid 375] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1c84360000 [pid 375] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 375] munmap(0x7f1c84360000, 262144) = 0 [pid 375] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 375] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 375] close(3) = 0 [pid 375] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 375] mount("/dev/loop0", "./file0", "ext2", MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_POSIXACL|MS_RELATIME, "\xff\xff\xff\xff\x2c\x65\x72\x72\x6f\x72\x73\x3d\x63\x6f\x6e\x74\x69\x6e\x75\x65") = -1 EINVAL (Invalid argument) [pid 375] ioctl(4, LOOP_CLR_FD) = 0 [pid 375] close(4) = 0 [ 25.958767][ T128] blk_update_request: I/O error, dev loop0, sector 2 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 [ 25.969514][ T373] EXT4-fs (loop0): unable to read superblock [ 25.986411][ T375] EXT4-fs (loop0): Unrecognized mount option "ÿÿÿÿ" or missing value [ 26.006192][ T375] EXT4-fs (loop0): feature flags set on rev 0 fs, running e2fsck is recommended [ 26.015690][ T375] EXT4-fs (loop0): warning: checktime reached, running e2fsck is recommended [ 26.024861][ T375] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:864: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 26.039011][ T375] EXT4-fs error (device loop0): ext4_validate_block_bitmap:409: comm syz-executor242: bg 0: block 46: invalid block bitmap [ 26.051638][ T375] Kernel panic - not syncing: EXT4-fs (device loop0): panic forced after error [ 26.060363][ T375] CPU: 0 PID: 375 Comm: syz-executor242 Not tainted 5.4.249-syzkaller-00009-gfed9191809bc #0 [ 26.070348][ T375] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 [ 26.080233][ T375] Call Trace: [ 26.083367][ T375] dump_stack+0x1d8/0x241 [ 26.087525][ T375] ? panic+0x896/0x896 [ 26.091432][ T375] ? submit_bio+0x1bf/0x6d0 [ 26.095773][ T375] ? nf_ct_l4proto_log_invalid+0x258/0x258 [ 26.101412][ T375] panic+0x309/0x896 [ 26.105148][ T375] ? ext4_handle_error+0x27f/0x3d0 [ 26.110091][ T375] ? csum_partial_copy_generic+0x169/0x169 [ 26.115741][ T375] ? ext4_commit_super+0x898/0xa40 [ 26.120686][ T375] ext4_handle_error+0x3c2/0x3d0 [ 26.125458][ T375] __ext4_error+0x1f9/0x490 [ 26.129797][ T375] ? ext4_itable_unused_set+0xf0/0xf0 [ 26.135002][ T375] ext4_validate_block_bitmap+0xa8c/0xcd0 [ 26.140559][ T375] ? ext4_wait_block_bitmap+0x18c/0x1b0 [ 26.145936][ T375] ext4_read_block_bitmap+0x3a/0x80 [ 26.150981][ T375] ext4_free_blocks+0x960/0x2310 [ 26.155745][ T375] ? ext4_truncate+0xb23/0x1290 [ 26.160430][ T375] ? ksys_mount+0xc2/0xf0 [ 26.164599][ T375] ? ext4_mb_discard_preallocations+0x250/0x250 [ 26.170675][ T375] ? get_default_free_blocks_flags+0x1d7/0x4c0 [ 26.176663][ T375] ext4_ext_remove_space+0x2758/0x4ba0 [ 26.181960][ T375] ? _raw_write_lock+0xa4/0x170 [ 26.186648][ T375] ? ext4_ext_index_trans_blocks+0x120/0x120 [ 26.192457][ T375] ? ext4_es_remove_extent+0x12b/0x350 [ 26.197758][ T375] ? ext4_es_lookup_extent+0x9d0/0x9d0 [ 26.203047][ T375] ? ext4_ext_truncate+0x136/0x180 [ 26.207993][ T375] ext4_truncate+0xb23/0x1290 [ 26.212510][ T375] ? down_write+0xd7/0x150 [ 26.216759][ T375] ? ext4_mark_inode_dirty+0x7a0/0x7a0 [ 26.222060][ T375] ? __brelse+0x55/0x90 [ 26.226049][ T375] ext4_orphan_cleanup+0x8bc/0xd40 [ 26.230995][ T375] ext4_fill_super+0x8576/0x8d70 [ 26.235785][ T375] ? ext4_mount+0x40/0x40 [ 26.239934][ T375] ? vscnprintf+0x80/0x80 [ 26.244100][ T375] mount_bdev+0x267/0x370 [ 26.248267][ T375] ? ext4_mount+0x40/0x40 [ 26.252434][ T375] legacy_get_tree+0xdf/0x170 [ 26.256945][ T375] ? ext4_lazyinit_thread+0xc60/0xc60 [ 26.262152][ T375] vfs_get_tree+0x85/0x260 [ 26.266406][ T375] do_new_mount+0x292/0x570 [ 26.270746][ T375] ? do_move_mount_old+0x160/0x160 [ 26.275695][ T375] ? security_capable+0x86/0xb0 [ 26.280379][ T375] do_mount+0x688/0xe10 [ 26.284373][ T375] ? copy_mount_string+0x30/0x30 [ 26.289146][ T375] ? _copy_from_user+0xa6/0xe0 [ 26.293745][ T375] ? copy_mount_options+0xcb/0x300 [ 26.298693][ T375] ksys_mount+0xc2/0xf0 [ 26.302696][ T375] __x64_sys_mount+0xb1/0xc0 [ 26.307113][ T375] do_syscall_64+0xca/0x1c0 [ 26.311453][ T375] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 26.317333][ T375] Kernel Offset: disabled [ 26.321447][ T375] Rebooting in 86400 seconds..