./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2113387824 <...> Warning: Permanently added '10.128.10.3' (ED25519) to the list of known hosts. execve("./syz-executor2113387824", ["./syz-executor2113387824"], 0x7fff7f6bda60 /* 10 vars */) = 0 brk(NULL) = 0x555556203000 brk(0x555556203d00) = 0x555556203d00 arch_prctl(ARCH_SET_FS, 0x555556203380) = 0 set_tid_address(0x555556203650) = 5015 set_robust_list(0x555556203660, 24) = 0 rseq(0x555556203ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2113387824", 4096) = 28 getrandom("\x0b\x33\x48\x92\xc8\xfb\x55\x93", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556203d00 brk(0x555556224d00) = 0x555556224d00 brk(0x555556225000) = 0x555556225000 mprotect(0x7f86c9f25000, 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=0x555556203650) = 5016 ./strace-static-x86_64: Process 5016 attached [pid 5016] set_robust_list(0x555556203660, 24) = 0 [pid 5016] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5016] setpgid(0, 0) = 0 [pid 5016] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5016] write(3, "1000", 4) = 4 [pid 5016] close(3) = 0 [pid 5016] memfd_create("syzkaller", 0) = 3 [pid 5016] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86c1a73000 [pid 5016] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5016] munmap(0x7f86c1a73000, 262144) = 0 [pid 5016] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5016] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5016] close(3) = 0 [pid 5016] mkdir("./file0", 0777) = 0 [pid 5016] 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) [ 56.065243][ T5016] memfd_create() without MFD_EXEC nor MFD_NOEXEC_SEAL, pid=5016 'syz-executor211' [ 56.082229][ T5016] loop0: detected capacity change from 0 to 512 [ 56.091796][ T5016] ext2: Unknown parameter 'ÿÿÿÿ' [pid 5016] ioctl(4, LOOP_CLR_FD) = 0 [pid 5016] close(4) = 0 [pid 5016] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EIO (Input/output error) [pid 5016] exit_group(0) = ? [pid 5016] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5016, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556203650) = 5018 ./strace-static-x86_64: Process 5018 attached [pid 5018] set_robust_list(0x555556203660, 24) = 0 [pid 5018] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5018] setpgid(0, 0) = 0 [pid 5018] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5018] write(3, "1000", 4) = 4 [pid 5018] close(3) = 0 [pid 5018] memfd_create("syzkaller", 0) = 3 [pid 5018] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86c1a73000 [pid 5018] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5018] munmap(0x7f86c1a73000, 262144) = 0 [pid 5018] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 56.138453][ T5016] syz-executor211: attempt to access beyond end of device [ 56.138453][ T5016] loop0: rw=4096, sector=2, nr_sectors = 2 limit=0 [ 56.152226][ T5016] EXT4-fs (loop0): unable to read superblock [pid 5018] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5018] close(3) = 0 [pid 5018] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 5018] 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) [ 56.187085][ T5018] loop0: detected capacity change from 0 to 512 [ 56.196227][ T5018] ext2: Unknown parameter 'ÿÿÿÿ' [pid 5018] ioctl(4, LOOP_CLR_FD) = 0 [pid 5018] close(4) = 0 [pid 5018] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EIO (Input/output error) [pid 5018] exit_group(0) = ? [pid 5018] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5018, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- 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=0x555556203650) = 5019 ./strace-static-x86_64: Process 5019 attached [pid 5019] set_robust_list(0x555556203660, 24) = 0 [pid 5019] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5019] setpgid(0, 0) = 0 [pid 5019] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5019] write(3, "1000", 4) = 4 [pid 5019] close(3) = 0 [pid 5019] memfd_create("syzkaller", 0) = 3 [pid 5019] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86c1a73000 [pid 5019] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5019] munmap(0x7f86c1a73000, 262144) = 0 [pid 5019] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 56.245713][ T5018] syz-executor211: attempt to access beyond end of device [ 56.245713][ T5018] loop0: rw=4096, sector=2, nr_sectors = 2 limit=0 [ 56.259660][ T5018] EXT4-fs (loop0): unable to read superblock [pid 5019] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5019] close(3) = 0 [pid 5019] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 5019] 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 5019] ioctl(4, LOOP_CLR_FD) = 0 [pid 5019] close(4) = 0 [ 56.294892][ T5019] loop0: detected capacity change from 0 to 512 [ 56.302298][ T5019] ext2: Unknown parameter 'ÿÿÿÿ' [pid 5019] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EIO (Input/output error) [pid 5019] exit_group(0) = ? [pid 5019] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5019, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- 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 5020 attached , child_tidptr=0x555556203650) = 5020 [pid 5020] set_robust_list(0x555556203660, 24) = 0 [pid 5020] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5020] setpgid(0, 0) = 0 [pid 5020] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5020] write(3, "1000", 4) = 4 [pid 5020] close(3) = 0 [pid 5020] memfd_create("syzkaller", 0) = 3 [pid 5020] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86c1a73000 [pid 5020] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5020] munmap(0x7f86c1a73000, 262144) = 0 [pid 5020] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 56.355097][ T5019] syz-executor211: attempt to access beyond end of device [ 56.355097][ T5019] loop0: rw=4096, sector=2, nr_sectors = 2 limit=0 [ 56.368698][ T5019] EXT4-fs (loop0): unable to read superblock [pid 5020] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5020] close(3) = 0 [pid 5020] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 5020] 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) [ 56.400822][ T5020] loop0: detected capacity change from 0 to 512 [ 56.408367][ T5020] ext2: Unknown parameter 'ÿÿÿÿ' [pid 5020] ioctl(4, LOOP_CLR_FD) = 0 [pid 5020] close(4) = 0 [pid 5020] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EIO (Input/output error) [pid 5020] exit_group(0) = ? [pid 5020] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5020, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- 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=0x555556203650) = 5021 ./strace-static-x86_64: Process 5021 attached [pid 5021] set_robust_list(0x555556203660, 24) = 0 [pid 5021] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5021] setpgid(0, 0) = 0 [pid 5021] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5021] write(3, "1000", 4) = 4 [pid 5021] close(3) = 0 [pid 5021] memfd_create("syzkaller", 0) = 3 [pid 5021] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86c1a73000 [pid 5021] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5021] munmap(0x7f86c1a73000, 262144) = 0 [pid 5021] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 56.480607][ T5020] syz-executor211: attempt to access beyond end of device [ 56.480607][ T5020] loop0: rw=4096, sector=2, nr_sectors = 2 limit=0 [ 56.500834][ T5020] EXT4-fs (loop0): unable to read superblock [pid 5021] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5021] close(3) = 0 [pid 5021] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 5021] 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) [ 56.540945][ T5021] loop0: detected capacity change from 0 to 512 [ 56.548358][ T5021] ext2: Unknown parameter 'ÿÿÿÿ' [pid 5021] ioctl(4, LOOP_CLR_FD) = 0 [pid 5021] close(4) = 0 [pid 5021] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EIO (Input/output error) [pid 5021] exit_group(0) = ? [pid 5021] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5021, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- 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=0x555556203650) = 5022 ./strace-static-x86_64: Process 5022 attached [pid 5022] set_robust_list(0x555556203660, 24) = 0 [pid 5022] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5022] setpgid(0, 0) = 0 [pid 5022] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5022] write(3, "1000", 4) = 4 [pid 5022] close(3) = 0 [pid 5022] memfd_create("syzkaller", 0) = 3 [pid 5022] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86c1a73000 [pid 5022] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5022] munmap(0x7f86c1a73000, 262144) = 0 [pid 5022] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 56.632283][ T5021] syz-executor211: attempt to access beyond end of device [ 56.632283][ T5021] loop0: rw=4096, sector=2, nr_sectors = 2 limit=0 [ 56.645895][ T5021] EXT4-fs (loop0): unable to read superblock [pid 5022] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5022] close(3) = 0 [pid 5022] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 5022] 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) [ 56.690061][ T5022] loop0: detected capacity change from 0 to 512 [ 56.699558][ T5022] ext2: Unknown parameter 'ÿÿÿÿ' [pid 5022] ioctl(4, LOOP_CLR_FD) = 0 [pid 5022] close(4) = 0 [pid 5022] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EIO (Input/output error) [pid 5022] exit_group(0) = ? [pid 5022] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5022, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- 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=0x555556203650) = 5023 ./strace-static-x86_64: Process 5023 attached [pid 5023] set_robust_list(0x555556203660, 24) = 0 [pid 5023] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5023] setpgid(0, 0) = 0 [pid 5023] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5023] write(3, "1000", 4) = 4 [pid 5023] close(3) = 0 [pid 5023] memfd_create("syzkaller", 0) = 3 [pid 5023] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86c1a73000 [pid 5023] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5023] munmap(0x7f86c1a73000, 262144) = 0 [pid 5023] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 56.736060][ T5022] syz-executor211: attempt to access beyond end of device [ 56.736060][ T5022] loop0: rw=4096, sector=2, nr_sectors = 2 limit=0 [ 56.749998][ T5022] EXT4-fs (loop0): unable to read superblock [pid 5023] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5023] close(3) = 0 [pid 5023] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 5023] 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 5023] ioctl(4, LOOP_CLR_FD) = 0 [pid 5023] close(4) = 0 [ 56.785945][ T5023] loop0: detected capacity change from 0 to 512 [ 56.794058][ T5023] ext2: Unknown parameter 'ÿÿÿÿ' [pid 5023] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EIO (Input/output error) [pid 5023] exit_group(0) = ? [pid 5023] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5023, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- 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=0x555556203650) = 5024 ./strace-static-x86_64: Process 5024 attached [pid 5024] set_robust_list(0x555556203660, 24) = 0 [pid 5024] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5024] setpgid(0, 0) = 0 [pid 5024] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5024] write(3, "1000", 4) = 4 [pid 5024] close(3) = 0 [pid 5024] memfd_create("syzkaller", 0) = 3 [pid 5024] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86c1a73000 [pid 5024] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5024] munmap(0x7f86c1a73000, 262144) = 0 [pid 5024] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 56.843652][ T5023] syz-executor211: attempt to access beyond end of device [ 56.843652][ T5023] loop0: rw=4096, sector=2, nr_sectors = 2 limit=0 [ 56.857261][ T5023] EXT4-fs (loop0): unable to read superblock [pid 5024] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5024] close(3) = 0 [pid 5024] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 5024] 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 5024] ioctl(4, LOOP_CLR_FD) = 0 [pid 5024] close(4) = 0 [ 56.884672][ T5024] loop0: detected capacity change from 0 to 512 [ 56.892157][ T5024] ext2: Unknown parameter 'ÿÿÿÿ' [pid 5024] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EIO (Input/output error) [pid 5024] exit_group(0) = ? [pid 5024] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5024, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556203650) = 5025 ./strace-static-x86_64: Process 5025 attached [pid 5025] set_robust_list(0x555556203660, 24) = 0 [pid 5025] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5025] setpgid(0, 0) = 0 [pid 5025] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5025] write(3, "1000", 4) = 4 [pid 5025] close(3) = 0 [pid 5025] memfd_create("syzkaller", 0) = 3 [pid 5025] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86c1a73000 [pid 5025] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5025] munmap(0x7f86c1a73000, 262144) = 0 [ 56.926745][ T5024] syz-executor211: attempt to access beyond end of device [ 56.926745][ T5024] loop0: rw=4096, sector=2, nr_sectors = 2 limit=0 [ 56.940831][ T5024] EXT4-fs (loop0): unable to read superblock [pid 5025] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5025] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5025] close(3) = 0 [pid 5025] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 5025] 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) [ 56.968515][ T5025] loop0: detected capacity change from 0 to 512 [ 56.976293][ T5025] ext2: Unknown parameter 'ÿÿÿÿ' [pid 5025] ioctl(4, LOOP_CLR_FD) = 0 [pid 5025] close(4) = 0 [pid 5025] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EIO (Input/output error) [pid 5025] exit_group(0) = ? [pid 5025] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5025, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- 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 5026 attached , child_tidptr=0x555556203650) = 5026 [pid 5026] set_robust_list(0x555556203660, 24) = 0 [pid 5026] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5026] setpgid(0, 0) = 0 [pid 5026] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5026] write(3, "1000", 4) = 4 [pid 5026] close(3) = 0 [pid 5026] memfd_create("syzkaller", 0) = 3 [pid 5026] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86c1a73000 [pid 5026] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5026] munmap(0x7f86c1a73000, 262144) = 0 [pid 5026] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 57.040903][ T5025] syz-executor211: attempt to access beyond end of device [ 57.040903][ T5025] loop0: rw=4096, sector=2, nr_sectors = 2 limit=0 [ 57.058265][ T5025] EXT4-fs (loop0): unable to read superblock [pid 5026] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5026] close(3) = 0 [pid 5026] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 5026] 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) [ 57.091512][ T5026] loop0: detected capacity change from 0 to 512 [ 57.101730][ T5026] ext2: Unknown parameter 'ÿÿÿÿ' [pid 5026] ioctl(4, LOOP_CLR_FD) = 0 [pid 5026] close(4) = 0 [pid 5026] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EIO (Input/output error) [pid 5026] exit_group(0) = ? [pid 5026] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5026, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- 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=0x555556203650) = 5027 ./strace-static-x86_64: Process 5027 attached [pid 5027] set_robust_list(0x555556203660, 24) = 0 [pid 5027] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5027] setpgid(0, 0) = 0 [pid 5027] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5027] write(3, "1000", 4) = 4 [pid 5027] close(3) = 0 [pid 5027] memfd_create("syzkaller", 0) = 3 [ 57.171722][ T5026] syz-executor211: attempt to access beyond end of device [ 57.171722][ T5026] loop0: rw=4096, sector=2, nr_sectors = 2 limit=0 [ 57.189573][ T5026] EXT4-fs (loop0): unable to read superblock [pid 5027] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86c1a73000 [pid 5027] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5027] munmap(0x7f86c1a73000, 262144) = 0 [pid 5027] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5027] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5027] close(3) = 0 [pid 5027] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 5027] 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 5027] ioctl(4, LOOP_CLR_FD) = 0 [pid 5027] close(4) = 0 [ 57.226260][ T5027] loop0: detected capacity change from 0 to 512 [ 57.234192][ T5027] ext2: Unknown parameter 'ÿÿÿÿ' [pid 5027] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EIO (Input/output error) [pid 5027] exit_group(0) = ? [pid 5027] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5027, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- 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=0x555556203650) = 5028 ./strace-static-x86_64: Process 5028 attached [pid 5028] set_robust_list(0x555556203660, 24) = 0 [pid 5028] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5028] setpgid(0, 0) = 0 [pid 5028] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5028] write(3, "1000", 4) = 4 [pid 5028] close(3) = 0 [pid 5028] memfd_create("syzkaller", 0) = 3 [pid 5028] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86c1a73000 [pid 5028] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5028] munmap(0x7f86c1a73000, 262144) = 0 [pid 5028] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5028] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5028] close(3) = 0 [pid 5028] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 5028] 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 5028] ioctl(4, LOOP_CLR_FD) = 0 [pid 5028] close(4) = 0 [ 57.275923][ T5027] EXT4-fs (loop0): unable to read superblock [ 57.302266][ T5028] loop0: detected capacity change from 0 to 512 [ 57.311181][ T5028] ext2: Unknown parameter 'ÿÿÿÿ' [pid 5028] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EIO (Input/output error) [pid 5028] exit_group(0) = ? [pid 5028] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5028, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556203650) = 5029 ./strace-static-x86_64: Process 5029 attached [pid 5029] set_robust_list(0x555556203660, 24) = 0 [pid 5029] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5029] setpgid(0, 0) = 0 [pid 5029] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5029] write(3, "1000", 4) = 4 [pid 5029] close(3) = 0 [pid 5029] memfd_create("syzkaller", 0) = 3 [pid 5029] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86c1a73000 [pid 5029] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5029] munmap(0x7f86c1a73000, 262144) = 0 [pid 5029] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5029] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5029] close(3) = 0 [pid 5029] mkdir("./file0", 0777) = -1 EEXIST (File exists) [ 57.347233][ T5028] EXT4-fs (loop0): unable to read superblock [ 57.386082][ T5029] loop0: detected capacity change from 0 to 512 [pid 5029] 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 5029] ioctl(4, LOOP_CLR_FD) = 0 [pid 5029] close(4) = 0 [ 57.393897][ T5029] ext2: Unknown parameter 'ÿÿÿÿ' [pid 5029] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EIO (Input/output error) [pid 5029] exit_group(0) = ? [pid 5029] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5029, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- 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 5030 attached , child_tidptr=0x555556203650) = 5030 [pid 5030] set_robust_list(0x555556203660, 24) = 0 [pid 5030] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5030] setpgid(0, 0) = 0 [pid 5030] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5030] write(3, "1000", 4) = 4 [pid 5030] close(3) = 0 [pid 5030] memfd_create("syzkaller", 0) = 3 [pid 5030] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86c1a73000 [pid 5030] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5030] munmap(0x7f86c1a73000, 262144) = 0 [pid 5030] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5030] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5030] close(3) = 0 [pid 5030] mkdir("./file0", 0777) = -1 EEXIST (File exists) [ 57.433893][ T5029] EXT4-fs (loop0): unable to read superblock [ 57.472645][ T5030] loop0: detected capacity change from 0 to 512 [pid 5030] 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) [ 57.480111][ T5030] ext2: Unknown parameter 'ÿÿÿÿ' [pid 5030] ioctl(4, LOOP_CLR_FD) = 0 [pid 5030] close(4) = 0 [pid 5030] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EIO (Input/output error) [pid 5030] exit_group(0) = ? [pid 5030] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5030, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- 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 5031 attached , child_tidptr=0x555556203650) = 5031 [pid 5031] set_robust_list(0x555556203660, 24) = 0 [pid 5031] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5031] setpgid(0, 0) = 0 [pid 5031] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5031] write(3, "1000", 4) = 4 [pid 5031] close(3) = 0 [pid 5031] memfd_create("syzkaller", 0) = 3 [pid 5031] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86c1a73000 [pid 5031] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5031] munmap(0x7f86c1a73000, 262144) = 0 [pid 5031] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5031] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5031] close(3) = 0 [pid 5031] mkdir("./file0", 0777) = -1 EEXIST (File exists) [ 57.542452][ T5030] EXT4-fs (loop0): unable to read superblock [ 57.582183][ T5031] loop0: detected capacity change from 0 to 512 [pid 5031] 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) [ 57.591584][ T5031] ext2: Unknown parameter 'ÿÿÿÿ' [pid 5031] ioctl(4, LOOP_CLR_FD) = 0 [pid 5031] close(4) = 0 [pid 5031] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EIO (Input/output error) [pid 5031] exit_group(0) = ? [pid 5031] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5031, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556203650) = 5032 ./strace-static-x86_64: Process 5032 attached [pid 5032] set_robust_list(0x555556203660, 24) = 0 [pid 5032] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5032] setpgid(0, 0) = 0 [pid 5032] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5032] write(3, "1000", 4) = 4 [pid 5032] close(3) = 0 [pid 5032] memfd_create("syzkaller", 0) = 3 [pid 5032] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86c1a73000 [pid 5032] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5032] munmap(0x7f86c1a73000, 262144) = 0 [pid 5032] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5032] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5032] close(3) = 0 [pid 5032] mkdir("./file0", 0777) = -1 EEXIST (File exists) [ 57.646097][ T5031] EXT4-fs (loop0): unable to read superblock [ 57.683073][ T5032] loop0: detected capacity change from 0 to 512 [pid 5032] 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) [ 57.692716][ T5032] ext2: Unknown parameter 'ÿÿÿÿ' [pid 5032] ioctl(4, LOOP_CLR_FD) = 0 [pid 5032] close(4) = 0 [pid 5032] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EIO (Input/output error) [pid 5032] exit_group(0) = ? [pid 5032] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5032, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- 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=0x555556203650) = 5033 ./strace-static-x86_64: Process 5033 attached [pid 5033] set_robust_list(0x555556203660, 24) = 0 [pid 5033] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5033] setpgid(0, 0) = 0 [pid 5033] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5033] write(3, "1000", 4) = 4 [pid 5033] close(3) = 0 [pid 5033] memfd_create("syzkaller", 0) = 3 [pid 5033] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86c1a73000 [pid 5033] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5033] munmap(0x7f86c1a73000, 262144) = 0 [pid 5033] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 57.745897][ T5032] EXT4-fs (loop0): unable to read superblock [pid 5033] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5033] close(3) = 0 [pid 5033] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 5033] 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) [ 57.786379][ T5033] loop0: detected capacity change from 0 to 512 [ 57.795813][ T5033] ext2: Unknown parameter 'ÿÿÿÿ' [pid 5033] ioctl(4, LOOP_CLR_FD) = 0 [pid 5033] close(4) = 0 [pid 5033] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EIO (Input/output error) [pid 5033] exit_group(0) = ? [pid 5033] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5033, 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=0x555556203650) = 5034 ./strace-static-x86_64: Process 5034 attached [pid 5034] set_robust_list(0x555556203660, 24) = 0 [pid 5034] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5034] setpgid(0, 0) = 0 [pid 5034] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5034] write(3, "1000", 4) = 4 [pid 5034] close(3) = 0 [pid 5034] memfd_create("syzkaller", 0) = 3 [pid 5034] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86c1a73000 [pid 5034] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5034] munmap(0x7f86c1a73000, 262144) = 0 [pid 5034] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5034] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5034] close(3) = 0 [pid 5034] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 5034] 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) [ 57.854623][ T5033] EXT4-fs (loop0): unable to read superblock [ 57.889430][ T5034] loop0: detected capacity change from 0 to 512 [ 57.899904][ T5034] ext2: Unknown parameter 'ÿÿÿÿ' [pid 5034] ioctl(4, LOOP_CLR_FD) = 0 [pid 5034] close(4) = 0 [pid 5034] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EIO (Input/output error) [pid 5034] exit_group(0) = ? [pid 5034] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5034, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- 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 5035 attached , child_tidptr=0x555556203650) = 5035 [pid 5035] set_robust_list(0x555556203660, 24) = 0 [pid 5035] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5035] setpgid(0, 0) = 0 [pid 5035] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5035] write(3, "1000", 4) = 4 [pid 5035] close(3) = 0 [pid 5035] memfd_create("syzkaller", 0) = 3 [pid 5035] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86c1a73000 [pid 5035] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5035] munmap(0x7f86c1a73000, 262144) = 0 [pid 5035] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5035] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5035] close(3) = 0 [pid 5035] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 5035] 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) [ 57.964039][ T5034] EXT4-fs (loop0): unable to read superblock [ 57.999702][ T5035] loop0: detected capacity change from 0 to 512 [ 58.008457][ T5035] ext2: Unknown parameter 'ÿÿÿÿ' [pid 5035] ioctl(4, LOOP_CLR_FD) = 0 [pid 5035] close(4) = 0 [pid 5035] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EIO (Input/output error) [pid 5035] exit_group(0) = ? [pid 5035] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5035, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- 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=0x555556203650) = 5036 ./strace-static-x86_64: Process 5036 attached [pid 5036] set_robust_list(0x555556203660, 24) = 0 [pid 5036] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5036] setpgid(0, 0) = 0 [pid 5036] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5036] write(3, "1000", 4) = 4 [pid 5036] close(3) = 0 [pid 5036] memfd_create("syzkaller", 0) = 3 [pid 5036] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86c1a73000 [pid 5036] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5036] munmap(0x7f86c1a73000, 262144) = 0 [pid 5036] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5036] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5036] close(3) = 0 [pid 5036] mkdir("./file0", 0777) = -1 EEXIST (File exists) [ 58.074341][ T5035] EXT4-fs (loop0): unable to read superblock [ 58.114296][ T5036] loop0: detected capacity change from 0 to 512 [pid 5036] 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 5036] ioctl(4, LOOP_CLR_FD) = 0 [pid 5036] close(4) = 0 [ 58.122329][ T5036] ext2: Unknown parameter 'ÿÿÿÿ' [pid 5036] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EIO (Input/output error) [pid 5036] exit_group(0) = ? [pid 5036] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5036, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- 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=0x555556203650) = 5037 ./strace-static-x86_64: Process 5037 attached [pid 5037] set_robust_list(0x555556203660, 24) = 0 [pid 5037] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5037] setpgid(0, 0) = 0 [pid 5037] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5037] write(3, "1000", 4) = 4 [pid 5037] close(3) = 0 [pid 5037] memfd_create("syzkaller", 0) = 3 [pid 5037] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86c1a73000 [pid 5037] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5037] munmap(0x7f86c1a73000, 262144) = 0 [pid 5037] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5037] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5037] close(3) = 0 [pid 5037] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 5037] 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) [ 58.158855][ T5036] EXT4-fs (loop0): unable to read superblock [ 58.192232][ T5037] loop0: detected capacity change from 0 to 512 [ 58.200363][ T5037] ext2: Unknown parameter 'ÿÿÿÿ' [pid 5037] ioctl(4, LOOP_CLR_FD) = 0 [pid 5037] close(4) = 0 [pid 5037] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EIO (Input/output error) [pid 5037] exit_group(0) = ? [pid 5037] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5037, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556203650) = 5038 ./strace-static-x86_64: Process 5038 attached [pid 5038] set_robust_list(0x555556203660, 24) = 0 [pid 5038] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5038] setpgid(0, 0) = 0 [pid 5038] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5038] write(3, "1000", 4) = 4 [pid 5038] close(3) = 0 [pid 5038] memfd_create("syzkaller", 0) = 3 [pid 5038] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86c1a73000 [pid 5038] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5038] munmap(0x7f86c1a73000, 262144) = 0 [pid 5038] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5038] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5038] close(3) = 0 [pid 5038] mkdir("./file0", 0777) = -1 EEXIST (File exists) [ 58.252294][ T5037] EXT4-fs (loop0): unable to read superblock [ 58.289924][ T5038] loop0: detected capacity change from 0 to 512 [pid 5038] 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) [ 58.298114][ T5038] ext2: Unknown parameter 'ÿÿÿÿ' [pid 5038] ioctl(4, LOOP_CLR_FD) = 0 [pid 5038] close(4) = 0 [pid 5038] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EIO (Input/output error) [pid 5038] exit_group(0) = ? [pid 5038] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5038, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- 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=0x555556203650) = 5039 ./strace-static-x86_64: Process 5039 attached [pid 5039] set_robust_list(0x555556203660, 24) = 0 [pid 5039] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5039] setpgid(0, 0) = 0 [pid 5039] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5039] write(3, "1000", 4) = 4 [pid 5039] close(3) = 0 [pid 5039] memfd_create("syzkaller", 0) = 3 [pid 5039] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86c1a73000 [pid 5039] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5039] munmap(0x7f86c1a73000, 262144) = 0 [pid 5039] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5039] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5039] close(3) = 0 [pid 5039] mkdir("./file0", 0777) = -1 EEXIST (File exists) [ 58.358351][ T5038] EXT4-fs (loop0): unable to read superblock [ 58.394729][ T5039] loop0: detected capacity change from 0 to 512 [ 58.403765][ T5039] ext2: Unknown parameter 'ÿÿÿÿ' [pid 5039] 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 5039] ioctl(4, LOOP_CLR_FD) = 0 [pid 5039] close(4) = 0 [pid 5039] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EIO (Input/output error) [pid 5039] exit_group(0) = ? [pid 5039] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5039, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556203650) = 5040 ./strace-static-x86_64: Process 5040 attached [pid 5040] set_robust_list(0x555556203660, 24) = 0 [pid 5040] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5040] setpgid(0, 0) = 0 [pid 5040] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5040] write(3, "1000", 4) = 4 [pid 5040] close(3) = 0 [pid 5040] memfd_create("syzkaller", 0) = 3 [pid 5040] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86c1a73000 [pid 5040] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5040] munmap(0x7f86c1a73000, 262144) = 0 [pid 5040] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 58.453710][ T5039] EXT4-fs (loop0): unable to read superblock [pid 5040] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5040] close(3) = 0 [pid 5040] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 5040] 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 5040] ioctl(4, LOOP_CLR_FD) = 0 [ 58.503789][ T5040] loop0: detected capacity change from 0 to 512 [ 58.512963][ T5040] ext2: Unknown parameter 'ÿÿÿÿ' [pid 5040] close(4) = 0 [pid 5040] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EIO (Input/output error) [pid 5040] exit_group(0) = ? [pid 5040] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5040, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- 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=0x555556203650) = 5041 ./strace-static-x86_64: Process 5041 attached [pid 5041] set_robust_list(0x555556203660, 24) = 0 [pid 5041] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5041] setpgid(0, 0) = 0 [pid 5041] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5041] write(3, "1000", 4) = 4 [pid 5041] close(3) = 0 [pid 5041] memfd_create("syzkaller", 0) = 3 [pid 5041] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86c1a73000 [pid 5041] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5041] munmap(0x7f86c1a73000, 262144) = 0 [pid 5041] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 58.571161][ T5040] EXT4-fs (loop0): unable to read superblock [pid 5041] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5041] close(3) = 0 [pid 5041] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 5041] 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 5041] ioctl(4, LOOP_CLR_FD) = 0 [ 58.618428][ T5041] loop0: detected capacity change from 0 to 512 [ 58.626521][ T5041] ext2: Unknown parameter 'ÿÿÿÿ' [pid 5041] close(4) = 0 [pid 5041] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EIO (Input/output error) [pid 5041] exit_group(0) = ? [pid 5041] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5041, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- 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=0x555556203650) = 5042 ./strace-static-x86_64: Process 5042 attached [pid 5042] set_robust_list(0x555556203660, 24) = 0 [pid 5042] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5042] setpgid(0, 0) = 0 [pid 5042] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5042] write(3, "1000", 4) = 4 [pid 5042] close(3) = 0 [pid 5042] memfd_create("syzkaller", 0) = 3 [pid 5042] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86c1a73000 [pid 5042] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5042] munmap(0x7f86c1a73000, 262144) = 0 [pid 5042] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5042] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5042] close(3) = 0 [pid 5042] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 5042] 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) [ 58.684585][ T5041] EXT4-fs (loop0): unable to read superblock [ 58.715112][ T5042] loop0: detected capacity change from 0 to 512 [ 58.724660][ T5042] ext2: Unknown parameter 'ÿÿÿÿ' [pid 5042] ioctl(4, LOOP_CLR_FD) = 0 [pid 5042] close(4) = 0 [pid 5042] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EIO (Input/output error) [pid 5042] exit_group(0) = ? [pid 5042] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5042, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- 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=0x555556203650) = 5043 ./strace-static-x86_64: Process 5043 attached [pid 5043] set_robust_list(0x555556203660, 24) = 0 [pid 5043] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5043] setpgid(0, 0) = 0 [pid 5043] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5043] write(3, "1000", 4) = 4 [pid 5043] close(3) = 0 [pid 5043] memfd_create("syzkaller", 0) = 3 [pid 5043] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86c1a73000 [pid 5043] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5043] munmap(0x7f86c1a73000, 262144) = 0 [pid 5043] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5043] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5043] close(3) = 0 [pid 5043] mkdir("./file0", 0777) = -1 EEXIST (File exists) [ 58.772385][ T5042] EXT4-fs (loop0): unable to read superblock [ 58.805622][ T5043] loop0: detected capacity change from 0 to 512 [pid 5043] 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) [ 58.824998][ T5043] ext2: Unknown parameter 'ÿÿÿÿ' [pid 5043] ioctl(4, LOOP_CLR_FD) = 0 [pid 5043] close(4) = 0 [pid 5043] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EIO (Input/output error) [pid 5043] exit_group(0) = ? [pid 5043] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5043, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556203650) = 5044 ./strace-static-x86_64: Process 5044 attached [pid 5044] set_robust_list(0x555556203660, 24) = 0 [pid 5044] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5044] setpgid(0, 0) = 0 [pid 5044] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5044] write(3, "1000", 4) = 4 [pid 5044] close(3) = 0 [pid 5044] memfd_create("syzkaller", 0) = 3 [pid 5044] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86c1a73000 [pid 5044] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5044] munmap(0x7f86c1a73000, 262144) = 0 [pid 5044] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5044] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5044] close(3) = 0 [pid 5044] mkdir("./file0", 0777) = -1 EEXIST (File exists) [ 58.884616][ T5043] EXT4-fs (loop0): unable to read superblock [ 58.924324][ T5044] loop0: detected capacity change from 0 to 512 [pid 5044] 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) [ 58.932496][ T5044] ext2: Unknown parameter 'ÿÿÿÿ' [pid 5044] ioctl(4, LOOP_CLR_FD) = 0 [pid 5044] close(4) = 0 [pid 5044] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EIO (Input/output error) [pid 5044] exit_group(0) = ? [pid 5044] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5044, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- 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=0x555556203650) = 5045 ./strace-static-x86_64: Process 5045 attached [pid 5045] set_robust_list(0x555556203660, 24) = 0 [pid 5045] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5045] setpgid(0, 0) = 0 [pid 5045] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5045] write(3, "1000", 4) = 4 [pid 5045] close(3) = 0 [pid 5045] memfd_create("syzkaller", 0) = 3 [pid 5045] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86c1a73000 [pid 5045] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5045] munmap(0x7f86c1a73000, 262144) = 0 [pid 5045] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5045] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5045] close(3) = 0 [pid 5045] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 5045] 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) [ 58.997117][ T5044] EXT4-fs (loop0): unable to read superblock [ 59.031711][ T5045] loop0: detected capacity change from 0 to 512 [ 59.040746][ T5045] ext2: Unknown parameter 'ÿÿÿÿ' [pid 5045] ioctl(4, LOOP_CLR_FD) = 0 [pid 5045] close(4) = 0 [pid 5045] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EIO (Input/output error) [pid 5045] exit_group(0) = ? [pid 5045] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5045, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- 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 5046 attached [pid 5046] set_robust_list(0x555556203660, 24) = 0 [pid 5046] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5015] <... clone resumed>, child_tidptr=0x555556203650) = 5046 [pid 5046] <... prctl resumed>) = 0 [pid 5046] setpgid(0, 0) = 0 [pid 5046] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5046] write(3, "1000", 4) = 4 [pid 5046] close(3) = 0 [pid 5046] memfd_create("syzkaller", 0) = 3 [pid 5046] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86c1a73000 [pid 5046] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5046] munmap(0x7f86c1a73000, 262144) = 0 [pid 5046] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5046] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5046] close(3) = 0 [pid 5046] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 5046] 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) [ 59.102271][ T5045] EXT4-fs (loop0): unable to read superblock [ 59.126343][ T5046] loop0: detected capacity change from 0 to 512 [ 59.134084][ T5046] ext2: Unknown parameter 'ÿÿÿÿ' [pid 5046] ioctl(4, LOOP_CLR_FD) = 0 [pid 5046] close(4) = 0 [pid 5046] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EIO (Input/output error) [pid 5046] exit_group(0) = ? [pid 5046] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5046, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- 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=0x555556203650) = 5047 ./strace-static-x86_64: Process 5047 attached [pid 5047] set_robust_list(0x555556203660, 24) = 0 [pid 5047] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5047] setpgid(0, 0) = 0 [pid 5047] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5047] write(3, "1000", 4) = 4 [pid 5047] close(3) = 0 [pid 5047] memfd_create("syzkaller", 0) = 3 [pid 5047] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86c1a73000 [pid 5047] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5047] munmap(0x7f86c1a73000, 262144) = 0 [pid 5047] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5047] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5047] close(3) = 0 [pid 5047] mkdir("./file0", 0777) = -1 EEXIST (File exists) [ 59.192269][ T5046] EXT4-fs (loop0): unable to read superblock [ 59.230482][ T5047] loop0: detected capacity change from 0 to 512 [pid 5047] 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) [ 59.239001][ T5047] ext2: Unknown parameter 'ÿÿÿÿ' [pid 5047] ioctl(4, LOOP_CLR_FD) = 0 [pid 5047] close(4) = 0 [pid 5047] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EIO (Input/output error) [pid 5047] exit_group(0) = ? [pid 5047] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5047, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- 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=0x555556203650) = 5048 ./strace-static-x86_64: Process 5048 attached [pid 5048] set_robust_list(0x555556203660, 24) = 0 [pid 5048] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5048] setpgid(0, 0) = 0 [pid 5048] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5048] write(3, "1000", 4) = 4 [pid 5048] close(3) = 0 [pid 5048] memfd_create("syzkaller", 0) = 3 [pid 5048] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86c1a73000 [pid 5048] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5048] munmap(0x7f86c1a73000, 262144) = 0 [pid 5048] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5048] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5048] close(3) = 0 [pid 5048] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 5048] 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) [ 59.313283][ T5047] EXT4-fs (loop0): unable to read superblock [ 59.348978][ T5048] loop0: detected capacity change from 0 to 512 [ 59.358377][ T5048] ext2: Unknown parameter 'ÿÿÿÿ' [pid 5048] ioctl(4, LOOP_CLR_FD) = 0 [pid 5048] close(4) = 0 [pid 5048] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EIO (Input/output error) [pid 5048] exit_group(0) = ? [pid 5048] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5048, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556203650) = 5049 ./strace-static-x86_64: Process 5049 attached [pid 5049] set_robust_list(0x555556203660, 24) = 0 [pid 5049] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5049] setpgid(0, 0) = 0 [pid 5049] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5049] write(3, "1000", 4) = 4 [pid 5049] close(3) = 0 [pid 5049] memfd_create("syzkaller", 0) = 3 [pid 5049] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86c1a73000 [pid 5049] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5049] munmap(0x7f86c1a73000, 262144) = 0 [pid 5049] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5049] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5049] close(3) = 0 [pid 5049] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 5049] 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) [ 59.425841][ T5048] EXT4-fs (loop0): unable to read superblock [ 59.458241][ T5049] loop0: detected capacity change from 0 to 512 [ 59.465763][ T5049] ext2: Unknown parameter 'ÿÿÿÿ' [pid 5049] ioctl(4, LOOP_CLR_FD) = 0 [pid 5049] close(4) = 0 [pid 5049] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EIO (Input/output error) [pid 5049] exit_group(0) = ? [pid 5049] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5049, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_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 5050 attached , child_tidptr=0x555556203650) = 5050 [pid 5050] set_robust_list(0x555556203660, 24) = 0 [pid 5050] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5050] setpgid(0, 0) = 0 [pid 5050] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5050] write(3, "1000", 4) = 4 [pid 5050] close(3) = 0 [pid 5050] memfd_create("syzkaller", 0) = 3 [pid 5050] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86c1a73000 [pid 5050] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5050] munmap(0x7f86c1a73000, 262144) = 0 [pid 5050] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5050] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5050] close(3) = 0 [pid 5050] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 5050] 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) [ 59.513854][ T5049] EXT4-fs (loop0): unable to read superblock [ 59.550852][ T5050] loop0: detected capacity change from 0 to 512 [ 59.558328][ T5050] ext2: Unknown parameter 'ÿÿÿÿ' [pid 5050] ioctl(4, LOOP_CLR_FD) = 0 [pid 5050] close(4) = 0 [pid 5050] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EIO (Input/output error) [pid 5050] exit_group(0) = ? [pid 5050] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5050, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- 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=0x555556203650) = 5051 ./strace-static-x86_64: Process 5051 attached [pid 5051] set_robust_list(0x555556203660, 24) = 0 [pid 5051] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5051] setpgid(0, 0) = 0 [pid 5051] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5051] write(3, "1000", 4) = 4 [pid 5051] close(3) = 0 [pid 5051] memfd_create("syzkaller", 0) = 3 [pid 5051] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86c1a73000 [pid 5051] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5051] munmap(0x7f86c1a73000, 262144) = 0 [pid 5051] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5051] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5051] close(3) = 0 [pid 5051] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 5051] 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) [ 59.618531][ T5050] EXT4-fs (loop0): unable to read superblock [ 59.655618][ T5051] loop0: detected capacity change from 0 to 512 [ 59.663121][ T5051] ext2: Unknown parameter 'ÿÿÿÿ' [pid 5051] ioctl(4, LOOP_CLR_FD) = 0 [pid 5051] close(4) = 0 [pid 5051] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EIO (Input/output error) [pid 5051] exit_group(0) = ? [pid 5051] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5051, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- 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 5052 attached [pid 5052] set_robust_list(0x555556203660, 24 [pid 5015] <... clone resumed>, child_tidptr=0x555556203650) = 5052 [pid 5052] <... set_robust_list resumed>) = 0 [pid 5052] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5052] setpgid(0, 0) = 0 [pid 5052] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5052] write(3, "1000", 4) = 4 [pid 5052] close(3) = 0 [pid 5052] memfd_create("syzkaller", 0) = 3 [pid 5052] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86c1a73000 [pid 5052] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5052] munmap(0x7f86c1a73000, 262144) = 0 [pid 5052] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5052] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5052] close(3) = 0 [pid 5052] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 5052] 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) [ 59.731903][ T5051] EXT4-fs (loop0): unable to read superblock [ 59.767269][ T5052] loop0: detected capacity change from 0 to 512 [ 59.775181][ T5052] ext2: Unknown parameter 'ÿÿÿÿ' [pid 5052] ioctl(4, LOOP_CLR_FD) = 0 [pid 5052] close(4) = 0 [pid 5052] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EIO (Input/output error) [pid 5052] exit_group(0) = ? [pid 5052] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5052, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- 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=0x555556203650) = 5053 ./strace-static-x86_64: Process 5053 attached [pid 5053] set_robust_list(0x555556203660, 24) = 0 [pid 5053] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5053] setpgid(0, 0) = 0 [pid 5053] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5053] write(3, "1000", 4) = 4 [pid 5053] close(3) = 0 [pid 5053] memfd_create("syzkaller", 0) = 3 [pid 5053] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86c1a73000 [pid 5053] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5053] munmap(0x7f86c1a73000, 262144) = 0 [pid 5053] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5053] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5053] close(3) = 0 [pid 5053] mkdir("./file0", 0777) = -1 EEXIST (File exists) [ 59.822180][ T5052] EXT4-fs (loop0): unable to read superblock [ 59.860879][ T5053] loop0: detected capacity change from 0 to 512 [pid 5053] 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) [ 59.870425][ T5053] ext2: Unknown parameter 'ÿÿÿÿ' [pid 5053] ioctl(4, LOOP_CLR_FD) = 0 [pid 5053] close(4) = 0 [pid 5053] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EIO (Input/output error) [pid 5053] exit_group(0) = ? [pid 5053] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5053, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- 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=0x555556203650) = 5054 ./strace-static-x86_64: Process 5054 attached [pid 5054] set_robust_list(0x555556203660, 24) = 0 [pid 5054] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5054] setpgid(0, 0) = 0 [pid 5054] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5054] write(3, "1000", 4) = 4 [pid 5054] close(3) = 0 [pid 5054] memfd_create("syzkaller", 0) = 3 [pid 5054] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86c1a73000 [pid 5054] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5054] munmap(0x7f86c1a73000, 262144) = 0 [pid 5054] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 59.925696][ T5053] EXT4-fs (loop0): unable to read superblock [pid 5054] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5054] close(3) = 0 [pid 5054] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 5054] 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 5054] ioctl(4, LOOP_CLR_FD) = 0 [pid 5054] close(4) = 0 [ 59.974645][ T5054] loop0: detected capacity change from 0 to 512 [ 59.982950][ T5054] ext2: Unknown parameter 'ÿÿÿÿ' [pid 5054] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EIO (Input/output error) [pid 5054] exit_group(0) = ? [pid 5054] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5054, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- 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=0x555556203650) = 5055 ./strace-static-x86_64: Process 5055 attached [pid 5055] set_robust_list(0x555556203660, 24) = 0 [pid 5055] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5055] setpgid(0, 0) = 0 [pid 5055] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5055] write(3, "1000", 4) = 4 [pid 5055] close(3) = 0 [pid 5055] memfd_create("syzkaller", 0) = 3 [pid 5055] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86c1a73000 [pid 5055] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5055] munmap(0x7f86c1a73000, 262144) = 0 [pid 5055] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5055] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5055] close(3) = 0 [pid 5055] mkdir("./file0", 0777) = -1 EEXIST (File exists) [ 60.037254][ T5054] EXT4-fs (loop0): unable to read superblock [ 60.073083][ T5055] loop0: detected capacity change from 0 to 512 [ 60.082673][ T5055] ext2: Unknown parameter 'ÿÿÿÿ' [pid 5055] 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 5055] ioctl(4, LOOP_CLR_FD) = 0 [pid 5055] close(4) = 0 [pid 5055] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EIO (Input/output error) [pid 5055] exit_group(0) = ? [pid 5055] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5055, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556203650) = 5056 ./strace-static-x86_64: Process 5056 attached [pid 5056] set_robust_list(0x555556203660, 24) = 0 [pid 5056] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5056] setpgid(0, 0) = 0 [pid 5056] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5056] write(3, "1000", 4) = 4 [pid 5056] close(3) = 0 [pid 5056] memfd_create("syzkaller", 0) = 3 [pid 5056] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86c1a73000 [pid 5056] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5056] munmap(0x7f86c1a73000, 262144) = 0 [pid 5056] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5056] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5056] close(3) = 0 [pid 5056] mkdir("./file0", 0777) = -1 EEXIST (File exists) [ 60.110220][ T5055] EXT4-fs (loop0): unable to read superblock [ 60.149416][ T5056] loop0: detected capacity change from 0 to 512 [pid 5056] 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) [ 60.158053][ T5056] ext2: Unknown parameter 'ÿÿÿÿ' [pid 5056] ioctl(4, LOOP_CLR_FD) = 0 [pid 5056] close(4) = 0 [pid 5056] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EIO (Input/output error) [pid 5056] exit_group(0) = ? [pid 5056] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5056, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556203650) = 5057 ./strace-static-x86_64: Process 5057 attached [pid 5057] set_robust_list(0x555556203660, 24) = 0 [pid 5057] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5057] setpgid(0, 0) = 0 [pid 5057] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5057] write(3, "1000", 4) = 4 [pid 5057] close(3) = 0 [pid 5057] memfd_create("syzkaller", 0) = 3 [pid 5057] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86c1a73000 [pid 5057] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5057] munmap(0x7f86c1a73000, 262144) = 0 [pid 5057] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5057] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5057] close(3) = 0 [pid 5057] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 5057] 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) [ 60.206118][ T5056] EXT4-fs (loop0): unable to read superblock [ 60.233586][ T5057] loop0: detected capacity change from 0 to 512 [ 60.241315][ T5057] ext2: Unknown parameter 'ÿÿÿÿ' [pid 5057] ioctl(4, LOOP_CLR_FD) = 0 [pid 5057] close(4) = 0 [pid 5057] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EIO (Input/output error) [pid 5057] exit_group(0) = ? [pid 5057] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5057, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- 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=0x555556203650) = 5058 ./strace-static-x86_64: Process 5058 attached [pid 5058] set_robust_list(0x555556203660, 24) = 0 [pid 5058] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5058] setpgid(0, 0) = 0 [pid 5058] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5058] write(3, "1000", 4) = 4 [pid 5058] close(3) = 0 [pid 5058] memfd_create("syzkaller", 0) = 3 [pid 5058] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86c1a73000 [pid 5058] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5058] munmap(0x7f86c1a73000, 262144) = 0 [pid 5058] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5058] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5058] close(3) = 0 [pid 5058] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 5058] 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) [ 60.295387][ T5057] EXT4-fs (loop0): unable to read superblock [ 60.332301][ T5058] loop0: detected capacity change from 0 to 512 [ 60.340151][ T5058] ext2: Unknown parameter 'ÿÿÿÿ' [pid 5058] ioctl(4, LOOP_CLR_FD) = 0 [pid 5058] close(4) = 0 [pid 5058] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EIO (Input/output error) [pid 5058] exit_group(0) = ? [pid 5058] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5058, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- 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=0x555556203650) = 5059 ./strace-static-x86_64: Process 5059 attached [pid 5059] set_robust_list(0x555556203660, 24) = 0 [pid 5059] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5059] setpgid(0, 0) = 0 [pid 5059] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5059] write(3, "1000", 4) = 4 [pid 5059] close(3) = 0 [pid 5059] memfd_create("syzkaller", 0) = 3 [pid 5059] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86c1a73000 [pid 5059] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5059] munmap(0x7f86c1a73000, 262144) = 0 [pid 5059] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5059] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5059] close(3) = 0 [pid 5059] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 5059] 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) [ 60.398676][ T5058] EXT4-fs (loop0): unable to read superblock [ 60.433140][ T5059] loop0: detected capacity change from 0 to 512 [ 60.440873][ T5059] ext2: Unknown parameter 'ÿÿÿÿ' [pid 5059] ioctl(4, LOOP_CLR_FD) = 0 [pid 5059] close(4) = 0 [pid 5059] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EIO (Input/output error) [pid 5059] exit_group(0) = ? [pid 5059] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5059, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- 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=0x555556203650) = 5060 ./strace-static-x86_64: Process 5060 attached [pid 5060] set_robust_list(0x555556203660, 24) = 0 [pid 5060] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5060] setpgid(0, 0) = 0 [pid 5060] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5060] write(3, "1000", 4) = 4 [pid 5060] close(3) = 0 [pid 5060] memfd_create("syzkaller", 0) = 3 [pid 5060] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86c1a73000 [pid 5060] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5060] munmap(0x7f86c1a73000, 262144) = 0 [pid 5060] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5060] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5060] close(3) = 0 [pid 5060] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 5060] 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) [ 60.488145][ T5059] EXT4-fs (loop0): unable to read superblock [ 60.522758][ T5060] loop0: detected capacity change from 0 to 512 [ 60.530720][ T5060] ext2: Unknown parameter 'ÿÿÿÿ' [pid 5060] ioctl(4, LOOP_CLR_FD) = 0 [pid 5060] close(4) = 0 [pid 5060] mount("/dev/loop0", "./file0", "ext4", MS_STRICTATIME|MS_LAZYTIME|MS_SUBMOUNT|MS_NOREMOTELOCK|MS_NOSEC|MS_BORN, NULL) = -1 EIO (Input/output error) [pid 5060] exit_group(0) = ? [pid 5060] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5060, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- 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=0x555556203650) = 5061 ./strace-static-x86_64: Process 5061 attached [pid 5061] set_robust_list(0x555556203660, 24) = 0 [pid 5061] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5061] setpgid(0, 0) = 0 [pid 5061] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5061] write(3, "1000", 4) = 4 [pid 5061] close(3) = 0 [pid 5061] memfd_create("syzkaller", 0) = 3 [pid 5061] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86c1a73000 [pid 5061] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5061] munmap(0x7f86c1a73000, 262144) = 0 [pid 5061] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 60.578760][ T5060] EXT4-fs (loop0): unable to read superblock [pid 5061] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5061] close(3) = 0 [pid 5061] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 5061] 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 5061] ioctl(4, LOOP_CLR_FD) = 0 [pid 5061] close(4) = 0 [ 60.626872][ T5061] loop0: detected capacity change from 0 to 512 [ 60.637644][ T5061] ext2: Unknown parameter 'ÿÿÿÿ' [ 60.657197][ T5061] EXT4-fs (loop0): feature flags set on rev 0 fs, running e2fsck is recommended [ 60.667344][ T5061] EXT4-fs (loop0): warning: checktime reached, running e2fsck is recommended [ 60.679837][ T5061] EXT4-fs warning (device loop0): ext4_update_dynamic_rev:1084: updating to rev 1 because of new feature flag, running e2fsck is recommended [ 60.694990][ T5061] EXT4-fs error (device loop0): ext4_validate_block_bitmap:430: comm syz-executor211: bg 0: block 46: invalid block bitmap [ 60.708717][ T5061] Kernel panic - not syncing: EXT4-fs (device loop0): panic forced after error [ 60.717659][ T5061] CPU: 1 PID: 5061 Comm: syz-executor211 Not tainted 6.5.0-rc5-syzkaller-00353-gae545c3283dc #0 [ 60.728062][ T5061] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 [ 60.738111][ T5061] Call Trace: [ 60.741395][ T5061] [ 60.744331][ T5061] dump_stack_lvl+0x1e7/0x2d0 [ 60.749078][ T5061] ? nf_tcp_handle_invalid+0x650/0x650 [ 60.754531][ T5061] ? panic+0x770/0x770 [ 60.758593][ T5061] ? io_schedule+0x8c/0x100 [ 60.763099][ T5061] ? vscnprintf+0x5d/0x80 [ 60.767439][ T5061] panic+0x30f/0x770 [ 60.771344][ T5061] ? __wait_on_bit+0x170/0x170 [ 60.776112][ T5061] ? ext4_handle_error+0x660/0x8b0 [ 60.781232][ T5061] ? __memcpy_flushcache+0x2b0/0x2b0 [ 60.786534][ T5061] ? ext4_commit_super+0x3f8/0x4c0 [ 60.791665][ T5061] ext4_handle_error+0x84e/0x8b0 [ 60.796612][ T5061] __ext4_error+0x277/0x3b0 [ 60.801113][ T5061] ? ext4_itable_unused_set+0xf0/0xf0 [ 60.806566][ T5061] ? __lock_acquire+0x7f70/0x7f70 [ 60.811589][ T5061] ? ext4_block_bitmap_csum_verify+0x1cb/0x570 [ 60.817762][ T5061] ext4_validate_block_bitmap+0xdf5/0x1200 [ 60.823571][ T5061] ? ext4_wait_block_bitmap+0x147/0x1f0 [ 60.829109][ T5061] ext4_read_block_bitmap+0x40/0x80 [ 60.834301][ T5061] ext4_free_blocks+0xfd3/0x2e20 [ 60.839249][ T5061] ? do_new_mount+0x28f/0xae0 [ 60.843954][ T5061] ? ext4_mb_discard_preallocations_should_retry+0x940/0x940 [ 60.851438][ T5061] ? __ext4_journal_ensure_credits+0x30/0x460 [ 60.857522][ T5061] ? ext4_ext_check_inode+0x80/0x80 [ 60.862715][ T5061] ? ext4_ext_remove_space+0x8c2/0x4d90 [ 60.868259][ T5061] ? ext4_inode_journal_mode+0x18b/0x460 [ 60.873884][ T5061] ext4_ext_remove_space+0x216e/0x4d90 [ 60.879359][ T5061] ? ext4_ext_index_trans_blocks+0x120/0x120 [ 60.885343][ T5061] ? ext4_es_remove_extent+0x2fd/0x500 [ 60.890799][ T5061] ? ext4_es_lookup_extent+0xa60/0xa60 [ 60.896246][ T5061] ? __down_write_common+0x161/0x200 [ 60.901536][ T5061] ? ext4_journal_check_start+0x179/0x240 [ 60.907266][ T5061] ext4_ext_truncate+0x164/0x1f0 [ 60.912381][ T5061] ext4_truncate+0xa0a/0x1150 [ 60.917065][ T5061] ? __ext4_mark_inode_dirty+0x870/0x870 [ 60.922694][ T5061] ext4_process_orphan+0x1aa/0x2d0 [ 60.927804][ T5061] ext4_orphan_cleanup+0xb71/0x1400 [ 60.933095][ T5061] ? ext4_orphan_del+0xc50/0xc50 [ 60.938031][ T5061] ? __init_swait_queue_head+0xae/0x150 [ 60.943589][ T5061] ? errseq_check_and_advance+0x64/0x120 [ 60.949219][ T5061] ext4_fill_super+0x63ef/0x6ce0 [ 60.954190][ T5061] ? ext4_parse_test_dummy_encryption+0xa0/0xa0 [ 60.960447][ T5061] ? snprintf+0xda/0x120 [ 60.964691][ T5061] ? vscnprintf+0x80/0x80 [ 60.969029][ T5061] ? set_blocksize+0x1e2/0x390 [ 60.973807][ T5061] ? sb_set_blocksize+0x99/0x100 [ 60.978822][ T5061] get_tree_bdev+0x468/0x6c0 [ 60.983412][ T5061] ? ext4_parse_test_dummy_encryption+0xa0/0xa0 [ 60.989671][ T5061] vfs_get_tree+0x8c/0x270 [ 60.994084][ T5061] do_new_mount+0x28f/0xae0 [ 60.998670][ T5061] ? do_move_mount_old+0x170/0x170 [ 61.003775][ T5061] ? user_path_at_empty+0x12f/0x180 [ 61.008964][ T5061] __se_sys_mount+0x2d9/0x3c0 [ 61.013653][ T5061] ? __x64_sys_mount+0xc0/0xc0 [ 61.018424][ T5061] ? syscall_enter_from_user_mode+0x32/0x230 [ 61.024397][ T5061] ? __x64_sys_mount+0x20/0xc0 [ 61.029155][ T5061] do_syscall_64+0x41/0xc0 [ 61.033562][ T5061] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 61.039468][ T5061] RIP: 0033:0x7f86c9eb1a99 [ 61.043921][ T5061] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 17 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 [ 61.063532][ T5061] RSP: 002b:00007ffc2eecbce8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 61.071963][ T5061] RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007f86c9eb1a99 [ 61.079930][ T5061] RDX: 00000000200001c0 RSI: 00000000200006c0 RDI: 0000000020000640 [ 61.087983][ T5061] RBP: 000000000000ec37 R08: 0000000000000000 R09: 00005555562044c0 [ 61.096125][ T5061] R10: 000000003f000000 R11: 0000000000000246 R12: 00007ffc2eecbd10 [ 61.104103][ T5061] R13: 00007ffc2eecbcfc R14: 431bde82d7b634db R15: 00007f86c9efa03b [ 61.112106][ T5061] [ 61.115343][ T5061] Kernel Offset: disabled [ 61.119759][ T5061] Rebooting in 86400 seconds..