[ 37.697003] audit: type=1800 audit(1548931365.088:26): pid=7616 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 37.718747] audit: type=1800 audit(1548931365.088:27): pid=7616 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 37.788647] audit: type=1800 audit(1548931365.198:28): pid=7616 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 38.825932] audit: type=1800 audit(1548931366.228:29): pid=7616 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.105' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 49.692408] INFO: trying to register non-static key. [ 49.697532] the code is fine but needs lockdep annotation. [ 49.703132] turning off the locking correctness validator. [ 49.708738] CPU: 1 PID: 7768 Comm: syz-executor559 Not tainted 5.0.0-rc4+ #52 [ 49.715993] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.725410] Call Trace: [ 49.728140] dump_stack+0x1db/0x2d0 [ 49.731758] ? dump_stack_print_info.cold+0x20/0x20 [ 49.736766] ? vprintk_func+0x86/0x189 [ 49.740636] register_lock_class+0x19dc/0x1e60 [ 49.745393] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 49.750394] ? bpf_prog_kallsyms_find+0xca/0x4b0 [ 49.755149] ? check_noncircular+0x20/0x20 [ 49.759366] ? module_enable_ro.part.0+0xe0/0xe0 [ 49.764109] ? __bpf_trace_xdp_cpumap_enqueue+0x40/0x40 [ 49.769459] ? check_preemption_disabled+0x48/0x290 [ 49.774475] ? lock_downgrade+0x910/0x910 [ 49.778605] ? check_noncircular+0x20/0x20 [ 49.782820] ? rcu_read_unlock_special+0x380/0x380 [ 49.787725] ? check_noncircular+0x20/0x20 [ 49.791952] ? print_usage_bug+0xd0/0xd0 [ 49.796001] ? is_bpf_text_address+0xd3/0x170 [ 49.800496] ? kernel_text_address+0x73/0xf0 [ 49.804892] ? __kernel_text_address+0xd/0x40 [ 49.809687] __lock_acquire+0x149/0x4a30 [ 49.813782] ? print_usage_bug+0xd0/0xd0 [ 49.817836] ? print_usage_bug+0xd0/0xd0 [ 49.821877] ? add_lock_to_list.isra.0+0x1c9/0x450 [ 49.826794] ? mark_held_locks+0x100/0x100 [ 49.831021] ? __lock_acquire+0x572/0x4a30 [ 49.835250] ? __lock_acquire+0x2514/0x4a30 [ 49.839558] ? mark_held_locks+0x100/0x100 [ 49.843773] ? mark_held_locks+0x100/0x100 [ 49.848000] ? mark_held_locks+0x100/0x100 [ 49.852224] ? mark_held_locks+0x100/0x100 [ 49.856603] ? add_lock_to_list.isra.0+0x450/0x450 [ 49.861512] ? add_lock_to_list.isra.0+0x450/0x450 [ 49.866427] ? save_stack+0x45/0xd0 [ 49.870153] ? __kasan_kmalloc.constprop.0+0xcf/0xe0 [ 49.875240] ? print_usage_bug+0xd0/0xd0 [ 49.879282] ? try_wait_for_completion+0x146/0x190 [ 49.884194] lock_acquire+0x1db/0x570 [ 49.887988] ? __flush_work+0x762/0xa20 [ 49.891946] ? lock_release+0xc40/0xc40 [ 49.895922] ? try_wait_for_completion+0x146/0x190 [ 49.900861] ? trace_hardirqs_off_caller+0x300/0x300 [ 49.906092] ? lockdep_hardirqs_on+0x415/0x5d0 [ 49.910799] __flush_work+0x787/0xa20 [ 49.914748] ? __flush_work+0x762/0xa20 [ 49.918705] ? insert_work+0x620/0x620 [ 49.922576] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 49.928096] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 49.933759] ? check_preemption_disabled+0x48/0x290 [ 49.938771] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 49.944291] ? refcount_sub_and_test_checked+0x1fe/0x2f0 [ 49.949817] ? refcount_inc_not_zero_checked+0x2e0/0x2e0 [ 49.955252] ? __drm_atomic_helper_crtc_destroy_state+0xf3/0x340 [ 49.961377] flush_work+0x18/0x20 [ 49.964809] vkms_atomic_crtc_destroy_state+0x2d/0x40 [ 49.969987] drm_atomic_state_default_clear+0x37c/0xd60 [ 49.975344] drm_atomic_state_clear+0x9d/0xc0 [ 49.979829] __drm_atomic_state_free+0x3c/0xf0 [ 49.984394] drm_atomic_helper_set_config+0xe5/0x160 [ 49.989482] drm_mode_setcrtc+0x73c/0x1870 [ 49.993706] ? drm_mode_getcrtc+0x870/0x870 [ 49.998096] ? drm_unbind_agp+0x20/0x20 [ 50.002053] ? drm_unbind_agp+0x20/0x20 [ 50.006010] ? drm_dev_unregister+0x480/0x480 [ 50.010494] ? drm_lease_owner+0x45/0x60 [ 50.014537] ? drm_is_current_master+0x5c/0x140 [ 50.019549] drm_ioctl_kernel+0x278/0x340 [ 50.023680] ? drm_mode_getcrtc+0x870/0x870 [ 50.027992] ? drm_setversion+0x8c0/0x8c0 [ 50.032123] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 50.037641] ? _copy_from_user+0xdd/0x150 [ 50.041769] drm_ioctl+0x592/0xb50 [ 50.045375] ? drm_mode_getcrtc+0x870/0x870 [ 50.049680] ? drm_version+0x3d0/0x3d0 [ 50.053553] ? trace_hardirqs_on_caller+0x310/0x310 [ 50.058551] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 50.064426] ? check_preemption_disabled+0x48/0x290 [ 50.069444] ? drm_version+0x3d0/0x3d0 [ 50.073327] do_vfs_ioctl+0x107b/0x17d0 [ 50.077283] ? putname+0xef/0x130 [ 50.080714] ? ioctl_preallocate+0x2f0/0x2f0 [ 50.085100] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 50.090614] ? __fget_light+0x2db/0x420 [ 50.094653] ? fget_raw+0x20/0x20 [ 50.098089] ? do_syscall_64+0x8c/0x800 [ 50.102415] ? do_syscall_64+0x8c/0x800 [ 50.106376] ? lockdep_hardirqs_on+0x415/0x5d0 [ 50.110957] ? security_file_ioctl+0x93/0xc0 [ 50.115355] ksys_ioctl+0xab/0xd0 [ 50.118792] __x64_sys_ioctl+0x73/0xb0 [ 50.122940] do_syscall_64+0x1a3/0x800 [ 50.126847] ? syscall_return_slowpath+0x5f0/0x5f0 [ 50.131767] ? prepare_exit_to_usermode+0x232/0x3b0 [ 50.136768] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 50.141975] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 50.147151] RIP: 0033:0x443de9 [ 50.150323] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 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 0f 83 7b d8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 50.169286] RSP: 002b:00007fff85b52bf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 50.176986] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000443de9 [ 50.184236] RDX: 0000000020000180 RSI: 00000000c06864a2 RDI: 0000000000000003 [ 50.191631] RBP: 00000000006ce01