./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor768130680 <...> Warning: Permanently added '10.128.1.67' (ED25519) to the list of known hosts. execve("./syz-executor768130680", ["./syz-executor768130680"], 0x7ffc6e6e1a20 /* 10 vars */) = 0 brk(NULL) = 0x55556909a000 brk(0x55556909ad00) = 0x55556909ad00 arch_prctl(ARCH_SET_FS, 0x55556909a380) = 0 set_tid_address(0x55556909a650) = 5829 set_robust_list(0x55556909a660, 24) = 0 rseq(0x55556909aca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor768130680", 4096) = 27 getrandom("\xa1\x2a\x19\x2f\x3d\x65\x0e\xf8", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55556909ad00 brk(0x5555690bbd00) = 0x5555690bbd00 brk(0x5555690bc000) = 0x5555690bc000 mprotect(0x7f0a3e217000, 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 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5830 attached , child_tidptr=0x55556909a650) = 5830 [pid 5830] set_robust_list(0x55556909a660, 24) = 0 [pid 5829] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5830] mkdir("./syzkaller.LQTzfP", 0700./strace-static-x86_64: Process 5831 attached [pid 5831] set_robust_list(0x55556909a660, 24 [pid 5829] <... clone resumed>, child_tidptr=0x55556909a650) = 5831 [pid 5831] <... set_robust_list resumed>) = 0 [pid 5831] mkdir("./syzkaller.OTX54N", 0700 [pid 5830] <... mkdir resumed>) = 0 [pid 5829] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5830] chmod("./syzkaller.LQTzfP", 0777./strace-static-x86_64: Process 5832 attached [pid 5831] <... mkdir resumed>) = 0 [pid 5831] chmod("./syzkaller.OTX54N", 0777 [pid 5830] <... chmod resumed>) = 0 [pid 5829] <... clone resumed>, child_tidptr=0x55556909a650) = 5832 [pid 5832] set_robust_list(0x55556909a660, 24 [pid 5830] chdir("./syzkaller.LQTzfP" [pid 5829] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5832] <... set_robust_list resumed>) = 0 [pid 5831] <... chmod resumed>) = 0 [pid 5830] <... chdir resumed>) = 0 [pid 5832] getrandom( [pid 5831] chdir("./syzkaller.OTX54N" [pid 5830] mkdir("./0", 0777./strace-static-x86_64: Process 5833 attached [pid 5832] <... getrandom resumed>"\x71\x20\x62\x52\xf7\x4d\x0f\x1b", 8, GRND_NONBLOCK) = 8 [pid 5831] <... chdir resumed>) = 0 [pid 5830] <... mkdir resumed>) = 0 [pid 5829] <... clone resumed>, child_tidptr=0x55556909a650) = 5833 [pid 5833] set_robust_list(0x55556909a660, 24 [pid 5832] mkdir("./syzkaller.V7m38K", 0700 [pid 5831] mkdir("./0", 0777 [pid 5829] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5833] <... set_robust_list resumed>) = 0 [pid 5830] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5832] <... mkdir resumed>) = 0 [pid 5831] <... mkdir resumed>) = 0 [pid 5830] <... openat resumed>) = 3 [pid 5831] openat(AT_FDCWD, "/dev/loop1", O_RDWR./strace-static-x86_64: Process 5834 attached [pid 5833] getrandom( [pid 5832] chmod("./syzkaller.V7m38K", 0777 [pid 5831] <... openat resumed>) = 3 [pid 5830] ioctl(3, LOOP_CLR_FD [pid 5829] <... clone resumed>, child_tidptr=0x55556909a650) = 5834 [pid 5834] set_robust_list(0x55556909a660, 24) = 0 [pid 5833] <... getrandom resumed>"\xb2\xc8\x91\x6a\xfb\x06\xd1\xd0", 8, GRND_NONBLOCK) = 8 [pid 5832] <... chmod resumed>) = 0 [pid 5831] ioctl(3, LOOP_CLR_FD [pid 5830] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5833] mkdir("./syzkaller.QiEWY8", 0700 [pid 5834] mkdir("./syzkaller.yLjs39", 0700 [pid 5833] <... mkdir resumed>) = 0 [pid 5832] chdir("./syzkaller.V7m38K" [pid 5831] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5830] close(3 [pid 5832] <... chdir resumed>) = 0 [pid 5834] <... mkdir resumed>) = 0 [pid 5832] mkdir("./0", 0777 [pid 5831] close(3 [pid 5830] <... close resumed>) = 0 [pid 5833] chmod("./syzkaller.QiEWY8", 0777 [pid 5831] <... close resumed>) = 0 [pid 5833] <... chmod resumed>) = 0 [pid 5834] chmod("./syzkaller.yLjs39", 0777 [pid 5833] chdir("./syzkaller.QiEWY8" [pid 5832] <... mkdir resumed>) = 0 [pid 5831] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5830] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5835 attached [pid 5834] <... chmod resumed>) = 0 [pid 5833] <... chdir resumed>) = 0 [pid 5832] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 ./strace-static-x86_64: Process 5836 attached [pid 5835] set_robust_list(0x55556909a660, 24 [pid 5834] chdir("./syzkaller.yLjs39" [pid 5833] mkdir("./0", 0777 [pid 5832] ioctl(3, LOOP_CLR_FD [pid 5831] <... clone resumed>, child_tidptr=0x55556909a650) = 5835 [pid 5835] <... set_robust_list resumed>) = 0 [pid 5836] set_robust_list(0x55556909a660, 24 [pid 5835] chdir("./0" [pid 5834] <... chdir resumed>) = 0 [pid 5836] <... set_robust_list resumed>) = 0 [pid 5835] <... chdir resumed>) = 0 [pid 5836] chdir("./0" [pid 5835] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5833] <... mkdir resumed>) = 0 [pid 5835] <... prctl resumed>) = 0 [pid 5835] setpgid(0, 0) = 0 [pid 5835] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5834] mkdir("./0", 0777 [pid 5832] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5836] <... chdir resumed>) = 0 [pid 5835] <... openat resumed>) = 3 [pid 5834] <... mkdir resumed>) = 0 [pid 5833] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5832] close(3 [pid 5830] <... clone resumed>, child_tidptr=0x55556909a650) = 5836 [pid 5836] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5835] write(3, "1000", 4 [pid 5834] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5833] <... openat resumed>) = 3 [pid 5832] <... close resumed>) = 0 [pid 5835] <... write resumed>) = 4 [pid 5836] setpgid(0, 0 [pid 5834] <... openat resumed>) = 3 [pid 5832] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5835] close(3) = 0 [pid 5836] <... setpgid resumed>) = 0 [pid 5836] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5835] symlink("/dev/binderfs", "./binderfs"./strace-static-x86_64: Process 5839 attached ) = 0 [pid 5834] ioctl(3, LOOP_CLR_FD [pid 5833] ioctl(3, LOOP_CLR_FD [pid 5836] <... openat resumed>) = 3 [pid 5834] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5833] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5832] <... clone resumed>, child_tidptr=0x55556909a650) = 5839 [pid 5839] set_robust_list(0x55556909a660, 24) = 0 [pid 5833] close(3 [pid 5834] close(3 [pid 5839] chdir("./0" [pid 5836] write(3, "1000", 4executing program [pid 5835] write(1, "executing program\n", 18 [pid 5833] <... close resumed>) = 0 [pid 5839] <... chdir resumed>) = 0 [pid 5836] <... write resumed>) = 4 [pid 5835] <... write resumed>) = 18 [pid 5839] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5836] close(3 [pid 5835] memfd_create("syzkaller", 0 [pid 5834] <... close resumed>) = 0 [pid 5833] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5839] <... prctl resumed>) = 0 [pid 5836] <... close resumed>) = 0 [pid 5835] <... memfd_create resumed>) = 3 [pid 5839] setpgid(0, 0 [pid 5836] symlink("/dev/binderfs", "./binderfs" [pid 5835] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0./strace-static-x86_64: Process 5840 attached [pid 5839] <... setpgid resumed>) = 0 [pid 5836] <... symlink resumed>) = 0 [pid 5835] <... mmap resumed>) = 0x7f0a35c00000 [pid 5834] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5840] set_robust_list(0x55556909a660, 24 [pid 5839] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5836] write(1, "executing program\n", 18executing program [pid 5839] <... openat resumed>) = 3 [pid 5836] <... write resumed>) = 18 [pid 5839] write(3, "1000", 4 [pid 5836] memfd_create("syzkaller", 0 [pid 5840] <... set_robust_list resumed>) = 0 [pid 5839] <... write resumed>) = 4 [pid 5836] <... memfd_create resumed>) = 3 ./strace-static-x86_64: Process 5841 attached [pid 5840] chdir("./0" [pid 5839] close(3 [pid 5836] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5839] <... close resumed>) = 0 [pid 5836] <... mmap resumed>) = 0x7f0a35c00000 [pid 5841] set_robust_list(0x55556909a660, 24 [pid 5840] <... chdir resumed>) = 0 [pid 5839] symlink("/dev/binderfs", "./binderfs" [pid 5833] <... clone resumed>, child_tidptr=0x55556909a650) = 5840 [pid 5840] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5841] <... set_robust_list resumed>) = 0 [pid 5841] chdir("./0" [pid 5840] <... prctl resumed>) = 0 [pid 5834] <... clone resumed>, child_tidptr=0x55556909a650) = 5841 [pid 5841] <... chdir resumed>) = 0 [pid 5841] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5841] setpgid(0, 0 [pid 5839] <... symlink resumed>) = 0 [pid 5841] <... setpgid resumed>) = 0 [pid 5840] setpgid(0, 0) = 0 executing program [pid 5841] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5840] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5839] write(1, "executing program\n", 18) = 18 [pid 5840] <... openat resumed>) = 3 [pid 5839] memfd_create("syzkaller", 0 [pid 5840] write(3, "1000", 4 [pid 5839] <... memfd_create resumed>) = 3 [pid 5840] <... write resumed>) = 4 [pid 5840] close(3 [pid 5839] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0a35c00000 [pid 5841] <... openat resumed>) = 3 [pid 5841] write(3, "1000", 4 [pid 5840] <... close resumed>) = 0 [pid 5841] <... write resumed>) = 4 [pid 5840] symlink("/dev/binderfs", "./binderfs" [pid 5841] close(3) = 0 [pid 5840] <... symlink resumed>) = 0 [pid 5841] symlink("/dev/binderfs", "./binderfs"executing program ) = 0 [pid 5840] write(1, "executing program\n", 18) = 18 [pid 5841] write(1, "executing program\n", 18 [pid 5840] memfd_create("syzkaller", 0executing program [pid 5841] <... write resumed>) = 18 [pid 5840] <... memfd_create resumed>) = 3 [pid 5840] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0a35c00000 [pid 5841] memfd_create("syzkaller", 0) = 3 [pid 5841] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0a35c00000 [pid 5836] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5841] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5839] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5840] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5835] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5836] <... write resumed>) = 16777216 [pid 5836] munmap(0x7f0a35c00000, 138412032) = 0 [pid 5836] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5836] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5836] close(3) = 0 [pid 5836] close(4) = 0 [pid 5836] mkdir("./file0", 0777) = 0 [ 62.083084][ T5836] loop0: detected capacity change from 0 to 32768 [pid 5836] mount("/dev/loop0", "./file0", "jfs", 0, "usrquota,iocharset=macceltic,quota,nointegrity,discard=0x0000000000000400,discard=0x0000000000000008"... [pid 5839] <... write resumed>) = 16777216 [pid 5836] <... mount resumed>) = 0 [pid 5839] munmap(0x7f0a35c00000, 138412032 [pid 5836] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5836] chdir("./file0" [pid 5840] <... write resumed>) = 16777216 [pid 5836] <... chdir resumed>) = 0 [pid 5836] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5836] exit_group(0) = ? [pid 5836] +++ exited with 0 +++ [pid 5830] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5836, si_uid=0, si_status=0, si_utime=11 /* 0.11 s */, si_stime=23 /* 0.23 s */} --- [pid 5830] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5830] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5840] munmap(0x7f0a35c00000, 138412032 [pid 5830] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5830] getdents64(3, 0x55556909b6f0 /* 4 entries */, 32768) = 112 [pid 5830] umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5830] newfstatat(AT_FDCWD, "./0/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5830] unlink("./0/binderfs") = 0 [pid 5830] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5839] <... munmap resumed>) = 0 [pid 5840] <... munmap resumed>) = 0 [pid 5835] <... write resumed>) = 16777216 [pid 5839] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5839] ioctl(4, LOOP_SET_FD, 3 [pid 5841] <... write resumed>) = 16777216 [pid 5840] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5835] munmap(0x7f0a35c00000, 138412032 [pid 5830] <... umount2 resumed>) = 0 [pid 5839] <... ioctl resumed>) = 0 [pid 5841] munmap(0x7f0a35c00000, 138412032 [pid 5840] <... openat resumed>) = 4 [pid 5835] <... munmap resumed>) = 0 [pid 5830] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5841] <... munmap resumed>) = 0 [pid 5840] ioctl(4, LOOP_SET_FD, 3 [pid 5839] close(3 [pid 5835] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5841] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5839] <... close resumed>) = 0 [pid 5830] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5839] close(4 [pid 5835] <... openat resumed>) = 4 [pid 5839] <... close resumed>) = 0 [pid 5839] mkdir("./file0", 0777) = 0 [pid 5841] <... openat resumed>) = 4 [pid 5840] <... ioctl resumed>) = 0 [pid 5839] mount("/dev/loop2", "./file0", "jfs", 0, "usrquota,iocharset=macceltic,quota,nointegrity,discard=0x0000000000000400,discard=0x0000000000000008"... [pid 5830] newfstatat(AT_FDCWD, "./0/file0", [pid 5841] ioctl(4, LOOP_SET_FD, 3 [pid 5840] close(3 [pid 5835] ioctl(4, LOOP_SET_FD, 3 [pid 5830] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [ 62.230866][ T5839] loop2: detected capacity change from 0 to 32768 [ 62.260436][ T5840] loop3: detected capacity change from 0 to 32768 [ 62.271145][ T5841] loop4: detected capacity change from 0 to 32768 [pid 5841] <... ioctl resumed>) = 0 [pid 5840] <... close resumed>) = 0 [pid 5830] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5841] close(3 [pid 5840] close(4) = 0 [pid 5830] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5840] mkdir("./file0", 0777 [pid 5830] openat(AT_FDCWD, "./0/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5840] <... mkdir resumed>) = 0 [pid 5830] newfstatat(4, "", [pid 5841] <... close resumed>) = 0 [pid 5835] <... ioctl resumed>) = 0 [pid 5841] close(4 [pid 5840] mount("/dev/loop3", "./file0", "jfs", 0, "usrquota,iocharset=macceltic,quota,nointegrity,discard=0x0000000000000400,discard=0x0000000000000008"... [pid 5830] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5841] <... close resumed>) = 0 [pid 5830] getdents64(4, [pid 5841] mkdir("./file0", 0777 [pid 5830] <... getdents64 resumed>0x5555690a3730 /* 2 entries */, 32768) = 48 [pid 5835] close(3 [pid 5841] <... mkdir resumed>) = 0 [pid 5835] <... close resumed>) = 0 [pid 5830] getdents64(4, [pid 5841] mount("/dev/loop4", "./file0", "jfs", 0, "usrquota,iocharset=macceltic,quota,nointegrity,discard=0x0000000000000400,discard=0x0000000000000008"... [pid 5835] close(4 [pid 5830] <... getdents64 resumed>0x5555690a3730 /* 0 entries */, 32768) = 0 [pid 5835] <... close resumed>) = 0 [pid 5835] mkdir("./file0", 0777) = 0 [pid 5830] close(4) = 0 [ 62.271914][ T5835] loop1: detected capacity change from 0 to 32768 [pid 5835] mount("/dev/loop1", "./file0", "jfs", 0, "usrquota,iocharset=macceltic,quota,nointegrity,discard=0x0000000000000400,discard=0x0000000000000008"... [pid 5830] rmdir("./0/file0" [pid 5841] <... mount resumed>) = 0 [pid 5840] <... mount resumed>) = 0 [pid 5839] <... mount resumed>) = 0 [pid 5839] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5841] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5840] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5839] <... openat resumed>) = 3 [pid 5830] <... rmdir resumed>) = 0 [pid 5841] <... openat resumed>) = 3 [pid 5840] <... openat resumed>) = 3 [pid 5830] getdents64(3, [pid 5841] chdir("./file0" [pid 5840] chdir("./file0" [pid 5839] chdir("./file0" [pid 5841] <... chdir resumed>) = 0 [pid 5840] <... chdir resumed>) = 0 [pid 5839] <... chdir resumed>) = 0 [pid 5830] <... getdents64 resumed>0x55556909b6f0 /* 0 entries */, 32768) = 0 [pid 5841] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5840] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5839] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5830] close(3 [pid 5841] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5840] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5839] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5830] <... close resumed>) = 0 [pid 5841] exit_group(0 [pid 5840] exit_group(0 [pid 5839] exit_group(0 [pid 5830] rmdir("./0" [pid 5840] <... exit_group resumed>) = ? [pid 5839] <... exit_group resumed>) = ? [pid 5830] <... rmdir resumed>) = 0 [pid 5840] +++ exited with 0 +++ [pid 5841] <... exit_group resumed>) = ? [pid 5839] +++ exited with 0 +++ [pid 5833] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5840, si_uid=0, si_status=0, si_utime=8 /* 0.08 s */, si_stime=22 /* 0.22 s */} --- [pid 5832] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5839, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=27 /* 0.27 s */} --- [pid 5830] mkdir("./1", 0777 [pid 5833] restart_syscall(<... resuming interrupted clone ...> [pid 5835] <... mount resumed>) = 0 [pid 5835] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5833] <... restart_syscall resumed>) = 0 [pid 5830] <... mkdir resumed>) = 0 [pid 5835] <... openat resumed>) = 3 [pid 5832] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5835] chdir("./file0" [pid 5833] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5832] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5835] <... chdir resumed>) = 0 [pid 5833] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5832] <... openat resumed>) = 3 [pid 5835] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5833] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5832] newfstatat(3, "", [pid 5835] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5833] <... openat resumed>) = 3 [pid 5832] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5835] exit_group(0 [pid 5833] newfstatat(3, "", [pid 5832] getdents64(3, [pid 5833] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5832] <... getdents64 resumed>0x55556909b6f0 /* 4 entries */, 32768) = 112 [pid 5835] <... exit_group resumed>) = ? [pid 5833] getdents64(3, [pid 5832] umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5833] <... getdents64 resumed>0x55556909b6f0 /* 4 entries */, 32768) = 112 [pid 5832] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5833] umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5832] newfstatat(AT_FDCWD, "./0/binderfs", [pid 5833] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5832] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5833] newfstatat(AT_FDCWD, "./0/binderfs", [pid 5832] unlink("./0/binderfs" [pid 5833] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5832] <... unlink resumed>) = 0 [pid 5841] +++ exited with 0 +++ [pid 5833] unlink("./0/binderfs" [pid 5832] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5830] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5834] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5841, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=23 /* 0.23 s */} --- [pid 5833] <... unlink resumed>) = 0 [pid 5834] restart_syscall(<... resuming interrupted clone ...> [ 62.367406][ T5833] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN PTI [ 62.380042][ T5833] KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037] [ 62.388484][ T5833] CPU: 0 UID: 0 PID: 5833 Comm: syz-executor768 Not tainted 6.13.0-rc1-next-20241203-syzkaller #0 [ 62.399087][ T5833] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 62.409184][ T5833] RIP: 0010:lmLogSync+0x228/0xae0 [pid 5833] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5830] <... openat resumed>) = 3 [pid 5835] +++ exited with 0 +++ [pid 5834] <... restart_syscall resumed>) = 0 [pid 5830] ioctl(3, LOOP_CLR_FD) = 0 [pid 5830] close(3 [pid 5831] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5835, si_uid=0, si_status=0, si_utime=9 /* 0.09 s */, si_stime=17 /* 0.17 s */} --- [pid 5831] restart_syscall(<... resuming interrupted clone ...>) = 0 [ 62.414247][ T5833] Code: a4 fe 49 8d 5f f0 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 26 4f d3 fe 48 8b 1b 48 83 c3 30 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 09 4f d3 fe 48 8b 3b e8 61 fa a4 [ 62.433899][ T5833] RSP: 0018:ffffc90003e1fa40 EFLAGS: 00010206 [ 62.439965][ T5833] RAX: 0000000000000006 RBX: 0000000000000030 RCX: ffff888033e11e00 [ 62.447927][ T5833] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 62.455892][ T5833] RBP: ffffc90003e1fb48 R08: ffffffff81d76d3e R09: 0000000000000000 [ 62.463852][ T5833] R10: ffffc90003e1f828 R11: fffff520007c3f34 R12: ffff88807b971800 [ 62.471814][ T5833] R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888026fa9e38 [ 62.479863][ T5833] FS: 000055556909a380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 [ 62.488780][ T5833] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 62.495352][ T5833] CR2: 00005555690a36f8 CR3: 000000007e896000 CR4: 00000000003526f0 [ 62.503319][ T5833] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 62.511280][ T5833] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 62.519240][ T5833] Call Trace: [ 62.522506][ T5833] [ 62.525427][ T5833] ? __die_body+0x5f/0xb0 [ 62.529751][ T5833] ? die_addr+0xb0/0xe0 [ 62.533895][ T5833] ? exc_general_protection+0x3dd/0x5d0 [ 62.539470][ T5833] ? asm_exc_general_protection+0x26/0x30 [ 62.545206][ T5833] ? filemap_flush+0x17e/0x260 [ 62.549974][ T5833] ? lmLogSync+0x228/0xae0 [ 62.554381][ T5833] ? __pfx_lmLogSync+0x10/0x10 [ 62.559163][ T5833] ? __pfx_dquot_writeback_dquots+0x10/0x10 [ 62.565047][ T5833] jfs_syncpt+0x7d/0xa0 [ 62.569191][ T5833] jfs_sync_fs+0x8a/0xa0 [ 62.573427][ T5833] sync_filesystem+0xed/0x230 [ 62.578094][ T5833] generic_shutdown_super+0x72/0x2d0 [ 62.583374][ T5833] kill_block_super+0x44/0x90 [ 62.588040][ T5833] deactivate_locked_super+0xc4/0x130 [ 62.593404][ T5833] cleanup_mnt+0x41f/0x4b0 [ 62.597812][ T5833] ? lockdep_hardirqs_on+0x99/0x150 [ 62.602999][ T5833] task_work_run+0x24f/0x310 [ 62.607584][ T5833] ? __pfx_task_work_run+0x10/0x10 [ 62.612684][ T5833] ? path_umount+0x284/0xf70 [ 62.617260][ T5833] ptrace_notify+0x2d2/0x380 [ 62.621855][ T5833] ? __pfx_ptrace_notify+0x10/0x10 [ 62.626956][ T5833] ? kmem_cache_free+0x195/0x410 [ 62.631889][ T5833] ? __x64_sys_umount+0x123/0x170 [ 62.636905][ T5833] syscall_exit_work+0xc7/0x1d0 [ 62.641746][ T5833] syscall_exit_to_user_mode+0x24a/0x340 [ 62.647372][ T5833] do_syscall_64+0x100/0x230 [ 62.651949][ T5833] ? clear_bhb_loop+0x35/0x90 [ 62.656633][ T5833] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 62.662530][ T5833] RIP: 0033:0x7f0a3e19e6f7 [ 62.666959][ T5833] Code: 07 00 48 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 [ 62.686564][ T5833] RSP: 002b:00007fff36987848 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 [ 62.694979][ T5833] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f0a3e19e6f7 [ 62.702939][ T5833] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff36987900 [ 62.710895][ T5833] RBP: 00007fff36987900 R08: 0000000000000000 R09: 0000000000000000 [pid 5831] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5830] <... close resumed>) = 0 [pid 5831] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5830] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5831] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5830] <... clone resumed>, child_tidptr=0x55556909a650) = 5843 ./strace-static-x86_64: Process 5843 attached [pid 5843] set_robust_list(0x55556909a660, 24 [pid 5831] newfstatat(3, "", [pid 5834] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5834] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5831] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5834] newfstatat(3, "", [pid 5843] <... set_robust_list resumed>) = 0 [pid 5834] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [ 62.718855][ T5833] R10: 00000000ffffffff R11: 0000000000000206 R12: 00007fff36988970 [ 62.726818][ T5833] R13: 000055556909b6c0 R14: 431bde82d7b634db R15: 00007fff36988990 [ 62.734787][ T5833] [ 62.737824][ T5833] Modules linked in: [ 62.742065][ T5833] ---[ end trace 0000000000000000 ]--- [pid 5831] getdents64(3, [pid 5834] getdents64(3, 0x55556909b6f0 /* 4 entries */, 32768) = 112 [pid 5834] umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5834] newfstatat(AT_FDCWD, "./0/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5834] unlink("./0/binderfs") = 0 [pid 5834] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5831] <... getdents64 resumed>0x55556909b6f0 /* 4 entries */, 32768) = 112 [pid 5843] chdir("./1" [pid 5831] umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5843] <... chdir resumed>) = 0 [pid 5831] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5843] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5831] newfstatat(AT_FDCWD, "./0/binderfs", [pid 5843] setpgid(0, 0 [pid 5831] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5843] <... setpgid resumed>) = 0 [pid 5843] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [ 62.773609][ T5833] RIP: 0010:lmLogSync+0x228/0xae0 [ 62.779422][ T5833] Code: a4 fe 49 8d 5f f0 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 26 4f d3 fe 48 8b 1b 48 83 c3 30 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 09 4f d3 fe 48 8b 3b e8 61 fa a4 [ 62.799543][ T5833] RSP: 0018:ffffc90003e1fa40 EFLAGS: 00010206 [ 62.805888][ T5833] RAX: 0000000000000006 RBX: 0000000000000030 RCX: ffff888033e11e00 [ 62.814347][ T5833] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [pid 5831] unlink("./0/binderfs" [pid 5843] <... openat resumed>) = 3 [pid 5831] <... unlink resumed>) = 0 [pid 5831] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5843] write(3, "1000", 4) = 4 [pid 5843] close(3) = 0 [pid 5843] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5843] write(1, "executing program\n", 18executing program ) = 18 [ 62.822378][ T5833] RBP: ffffc90003e1fb48 R08: ffffffff81d76d3e R09: 0000000000000000 [ 62.830765][ T5833] R10: ffffc90003e1f828 R11: fffff520007c3f34 R12: ffff88807b971800 [ 62.838817][ T5833] R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888026fa9e38 [ 62.847120][ T5833] FS: 000055556909a380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 [ 62.856276][ T5833] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 62.863057][ T5833] CR2: 00007f0a3e168b21 CR3: 000000007e896000 CR4: 00000000003526f0 [pid 5843] memfd_create("syzkaller", 0) = 3 [pid 5843] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0a35c00000 [ 62.871206][ T5833] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 62.879212][ T5833] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 62.887431][ T5833] Kernel panic - not syncing: Fatal exception [ 62.893762][ T5833] Kernel Offset: disabled [ 62.898076][ T5833] Rebooting in 86400 seconds..