./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3796180329 <...> Warning: Permanently added '10.128.1.170' (ED25519) to the list of known hosts. execve("./syz-executor3796180329", ["./syz-executor3796180329"], 0x7fff3eca9a70 /* 10 vars */) = 0 brk(NULL) = 0x555556fb5000 brk(0x555556fb5d00) = 0x555556fb5d00 arch_prctl(ARCH_SET_FS, 0x555556fb5380) = 0 set_tid_address(0x555556fb5650) = 5034 set_robust_list(0x555556fb5660, 24) = 0 rseq(0x555556fb5ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3796180329", 4096) = 28 getrandom("\x3b\xb8\x8c\x9d\x60\x50\x43\x5d", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556fb5d00 brk(0x555556fd6d00) = 0x555556fd6d00 brk(0x555556fd7000) = 0x555556fd7000 mprotect(0x7f789b1fc000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 mkdir("./syzkaller.ryPXvs", 0700) = 0 chmod("./syzkaller.ryPXvs", 0777) = 0 chdir("./syzkaller.ryPXvs") = 0 mkdir("./0", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556fb5650) = 5035 ./strace-static-x86_64: Process 5035 attached [pid 5035] set_robust_list(0x555556fb5660, 24) = 0 [pid 5035] chdir("./0") = 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] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5035] memfd_create("syzkaller", 0) = 3 [pid 5035] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7892d35000 [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"..., 1048576) = 1048576 [pid 5035] munmap(0x7f7892d35000, 1048576) = 0 [ 60.218701][ T5035] memfd_create() without MFD_EXEC nor MFD_NOEXEC_SEAL, pid=5035 'syz-executor379' [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) = 0 [pid 5035] mount("/dev/loop0", "./file0", "udf", MS_NOEXEC|MS_POSIXACL|MS_LAZYTIME, "fileset=00000000000000065537,iocharset=macgreek,mode=00000000000000000000033,partition=0000000000000"...) = 0 [pid 5035] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5035] ioctl(4, LOOP_CLR_FD) = 0 [pid 5035] close(4) = 0 [pid 5035] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_NOATIME|FASYNC, 000) = 4 [pid 5035] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 5035] open("./bus", O_RDWR|O_NOCTTY|O_SYNC|O_NOATIME|0x3c) = 5 [pid 5035] memfd_create("syzkaller", 0) = 6 [pid 5035] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f788aa35000 [ 60.259238][ T5035] loop0: detected capacity change from 0 to 2048 [ 60.272580][ T5035] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [pid 5035] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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) = 16777216 [pid 5035] munmap(0x7f788aa35000, 16777216) = 0 [pid 5035] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 5035] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 5035] ioctl(7, LOOP_CLR_FD) = 0 [pid 5035] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 5035] close(7) = 0 [pid 5035] close(6) = 0 [pid 5035] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x67\x66\x73\x32\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 34136651) = 1048576 [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=1 /* 0.01 s */, si_stime=39 /* 0.39 s */} --- umount2("./0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x555556fb66f0 /* 5 entries */, 32768) = 136 umount2("./0/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./0/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./0/bus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./0/bus") = 0 umount2("./0/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./0/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./0/binderfs") = 0 [ 60.763990][ T5034] BUG: unable to handle page fault for address: ffffed10181e6c0d [ 60.771726][ T5034] #PF: supervisor read access in kernel mode [ 60.777696][ T5034] #PF: error_code(0x0000) - not-present page [ 60.783656][ T5034] PGD 23ffee067 P4D 23ffee067 PUD 13fff5067 PMD 0 [ 60.790147][ T5034] Oops: 0000 [#1] PREEMPT SMP KASAN [ 60.795321][ T5034] CPU: 0 PID: 5034 Comm: syz-executor379 Not tainted 6.5.0-rc2-next-20230721-syzkaller #0 [ 60.805188][ T5034] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 [ 60.815223][ T5034] RIP: 0010:udf_close_lvid+0x13b/0x5c0 [ 60.820720][ T5034] Code: 84 24 c0 00 00 00 31 f6 48 89 c7 48 89 44 24 08 e8 3a 53 49 07 48 8d 7b 18 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 b2 03 00 00 [ 60.840399][ T5034] RSP: 0018:ffffc90003a8fd00 EFLAGS: 00010a02 [ 60.846456][ T5034] RAX: dffffc0000000000 RBX: ffff8880c0f36050 RCX: fffff52000751f7e [ 60.854419][ T5034] RDX: 1ffff110181e6c0d RSI: ffffffff8ac87440 RDI: ffff8880c0f36068 [ 60.862395][ T5034] RBP: ffff888074e5b0e8 R08: 0000000000000000 R09: fffffbfff1d5881a [ 60.870363][ T5034] R10: ffffc90003a8fd00 R11: ffffffff81db8f8c R12: ffff88802004e800 [ 60.878335][ T5034] R13: ffff88807a450000 R14: ffff888074531000 R15: ffff888015e6adc0 [ 60.886292][ T5034] FS: 0000555556fb5380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 60.895214][ T5034] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 60.901788][ T5034] CR2: ffffed10181e6c0d CR3: 0000000077645000 CR4: 00000000003506f0 [ 60.909746][ T5034] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 60.917702][ T5034] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 60.926088][ T5034] Call Trace: [ 60.929351][ T5034] [ 60.932263][ T5034] ? __die+0x1e/0x60 [ 60.936143][ T5034] ? page_fault_oops+0x398/0xad0 [ 60.941060][ T5034] ? reacquire_held_locks+0x4b0/0x4b0 [ 60.946415][ T5034] ? dump_pagetable+0x530/0x530 [ 60.951247][ T5034] ? search_extable+0x83/0xb0 [ 60.955921][ T5034] ? is_prefetch.constprop.0+0xb6/0x550 [ 60.961539][ T5034] ? __module_address+0x55/0x3b0 [ 60.966460][ T5034] ? bpf_ksym_find+0x124/0x1b0 [ 60.971211][ T5034] ? pgtable_bad+0x80/0x80 [ 60.975633][ T5034] ? fixup_exception+0x110/0xc90 [ 60.980567][ T5034] ? kernelmode_fixup_or_oops+0x23c/0x2b0 [ 60.986267][ T5034] ? __bad_area_nosemaphore+0x390/0x6a0 [ 60.991792][ T5034] ? spurious_kernel_fault+0x376/0x550 [ 60.997236][ T5034] ? do_kern_addr_fault+0x5b/0x70 [ 61.002245][ T5034] ? exc_page_fault+0xba/0xd0 [ 61.006907][ T5034] ? asm_exc_page_fault+0x26/0x30 [ 61.011921][ T5034] ? __kasan_record_aux_stack+0xbc/0xd0 [ 61.017458][ T5034] ? udf_close_lvid+0x13b/0x5c0 [ 61.022309][ T5034] udf_put_super+0x19c/0x200 [ 61.026894][ T5034] ? udf_close_lvid+0x5c0/0x5c0 [ 61.031749][ T5034] generic_shutdown_super+0x158/0x480 [ 61.037114][ T5034] kill_block_super+0x64/0xb0 [ 61.041784][ T5034] deactivate_locked_super+0x9a/0x170 [ 61.047147][ T5034] deactivate_super+0xde/0x100 [ 61.051899][ T5034] cleanup_mnt+0x222/0x3d0 [ 61.056298][ T5034] task_work_run+0x14d/0x240 [ 61.060879][ T5034] ? task_work_cancel+0x30/0x30 [ 61.065718][ T5034] ptrace_notify+0x10c/0x130 [ 61.070294][ T5034] syscall_exit_to_user_mode_prepare+0x120/0x220 [ 61.076609][ T5034] syscall_exit_to_user_mode+0xd/0x50 [ 61.081992][ T5034] do_syscall_64+0x44/0xb0 [ 61.086393][ T5034] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 61.092302][ T5034] RIP: 0033:0x7f789b1756c7 [ 61.096698][ T5034] Code: 08 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 [ 61.116291][ T5034] RSP: 002b:00007ffe66c8eee8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 [ 61.124699][ T5034] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f789b1756c7 [ 61.132652][ T5034] RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007ffe66c8efa0 [ 61.140605][ T5034] RBP: 00007ffe66c8efa0 R08: 0000000000000000 R09: 0000000000000000 [ 61.148567][ T5034] R10: 00000000ffffffff R11: 0000000000000206 R12: 00007ffe66c90010 [ 61.156600][ T5034] R13: 0000555556fb66c0 R14: 431bde82d7b634db R15: 00007ffe66c90030 [ 61.164667][ T5034] [ 61.167672][ T5034] Modules linked in: [ 61.171557][ T5034] CR2: ffffed10181e6c0d [ 61.175793][ T5034] ---[ end trace 0000000000000000 ]--- [ 61.181231][ T5034] RIP: 0010:udf_close_lvid+0x13b/0x5c0 [ 61.186683][ T5034] Code: 84 24 c0 00 00 00 31 f6 48 89 c7 48 89 44 24 08 e8 3a 53 49 07 48 8d 7b 18 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 b2 03 00 00 [ 61.206278][ T5034] RSP: 0018:ffffc90003a8fd00 EFLAGS: 00010a02 [ 61.212335][ T5034] RAX: dffffc0000000000 RBX: ffff8880c0f36050 RCX: fffff52000751f7e [ 61.220322][ T5034] RDX: 1ffff110181e6c0d RSI: ffffffff8ac87440 RDI: ffff8880c0f36068 [ 61.228305][ T5034] RBP: ffff888074e5b0e8 R08: 0000000000000000 R09: fffffbfff1d5881a [ 61.236278][ T5034] R10: ffffc90003a8fd00 R11: ffffffff81db8f8c R12: ffff88802004e800 [ 61.244236][ T5034] R13: ffff88807a450000 R14: ffff888074531000 R15: ffff888015e6adc0 [ 61.252213][ T5034] FS: 0000555556fb5380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 61.261153][ T5034] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 61.267721][ T5034] CR2: ffffed10181e6c0d CR3: 0000000077645000 CR4: 00000000003506f0 [ 61.275676][ T5034] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 61.283627][ T5034] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 61.291581][ T5034] Kernel panic - not syncing: Fatal exception [ 61.297817][ T5034] Kernel Offset: disabled [ 61.302125][ T5034] Rebooting in 86400 seconds..