[ 43.960871] audit: type=1800 audit(1552001903.267:31): pid=7862 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 50.386902] kauditd_printk_skb: 3 callbacks suppressed [ 50.386918] audit: type=1400 audit(1552001909.747:35): avc: denied { map } for pid=8034 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.0.101' (ECDSA) to the list of known hosts. executing program [ 56.954097] audit: type=1400 audit(1552001916.317:36): avc: denied { map } for pid=8046 comm="syz-executor642" path="/root/syz-executor642773801" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 56.958920] WARNING: CPU: 0 PID: 8046 at kernel/workqueue.c:3020 __flush_work+0x74c/0x8a0 [ 56.988740] Kernel panic - not syncing: panic_on_warn set ... [ 56.994628] CPU: 0 PID: 8046 Comm: syz-executor642 Not tainted 5.0.0+ #11 [ 57.001535] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.010873] Call Trace: [ 57.013448] dump_stack+0x172/0x1f0 [ 57.017065] ? __flush_work+0x6d0/0x8a0 [ 57.021023] panic+0x2cb/0x65c [ 57.024198] ? __warn_printk+0xf3/0xf3 [ 57.028073] ? __flush_work+0x74c/0x8a0 [ 57.032035] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 57.037559] ? __warn.cold+0x5/0x45 [ 57.041170] ? __warn+0xe8/0x1d0 [ 57.044518] ? __flush_work+0x74c/0x8a0 [ 57.048526] __warn.cold+0x20/0x45 [ 57.052051] ? __flush_work+0x74c/0x8a0 [ 57.056015] report_bug+0x263/0x2b0 [ 57.059650] do_error_trap+0x11b/0x200 [ 57.063540] do_invalid_op+0x37/0x50 [ 57.067237] ? __flush_work+0x74c/0x8a0 [ 57.071195] invalid_op+0x14/0x20 [ 57.074632] RIP: 0010:__flush_work+0x74c/0x8a0 [ 57.079203] Code: 74 58 e8 77 12 26 00 fb 66 0f 1f 44 00 00 45 31 e4 e9 86 fd ff ff e8 63 12 26 00 0f 0b 45 31 e4 e9 77 fd ff ff e8 54 12 26 00 <0f> 0b 45 31 e4 e9 68 fd ff ff e8 45 12 26 00 4c 89 ff 45 31 e4 e8 [ 57.098114] RSP: 0018:ffff888087e6f608 EFLAGS: 00010293 [ 57.103465] RAX: ffff888098292340 RBX: ffff8880a623f000 RCX: ffffffff814a14cb [ 57.110718] RDX: 0000000000000000 RSI: ffffffff814a1b7c RDI: 0000000000000001 [ 57.117992] RBP: ffff888087e6f778 R08: ffff888098292340 R09: ffffed1010fcdedd [ 57.125246] R10: ffffed1010fcdedc R11: 0000000000000003 R12: dffffc0000000000 [ 57.132498] R13: ffff888087e6f750 R14: 0000000000000000 R15: 0000000000000001 [ 57.139784] ? __flush_work+0x9b/0x8a0 [ 57.143688] ? __flush_work+0x74c/0x8a0 [ 57.147649] ? __flush_work+0x74c/0x8a0 [ 57.151618] ? insert_work+0x3a0/0x3a0 [ 57.155487] ? mark_held_locks+0xa4/0xf0 [ 57.159533] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 57.165058] ? refcount_sub_and_test_checked+0x154/0x200 [ 57.170491] ? refcount_dec_not_one+0x1f0/0x1f0 [ 57.175145] ? __drm_atomic_helper_crtc_destroy_state+0xf3/0x340 [ 57.181280] flush_work+0x18/0x20 [ 57.184721] vkms_atomic_crtc_destroy_state+0x2d/0x40 [ 57.189899] drm_atomic_state_default_clear+0x37c/0xd60 [ 57.195250] drm_atomic_state_clear+0x9d/0xc0 [ 57.199733] __drm_atomic_state_free+0x3c/0xf0 [ 57.204298] drm_atomic_helper_set_config+0xe5/0x160 [ 57.209391] drm_mode_setcrtc+0x613/0x1490 [ 57.213617] ? drm_mode_getcrtc+0x870/0x870 [ 57.217923] ? drm_dev_exit+0x22/0x60 [ 57.221711] ? find_held_lock+0x35/0x130 [ 57.225755] ? drm_dev_exit+0x22/0x60 [ 57.229569] ? drm_lease_owner+0x45/0x60 [ 57.233631] ? drm_is_current_master+0x5c/0x140 [ 57.238294] drm_ioctl_kernel+0x23b/0x2e0 [ 57.242428] ? drm_mode_getcrtc+0x870/0x870 [ 57.246733] ? drm_setversion+0x8c0/0x8c0 [ 57.250866] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 57.256389] ? _copy_from_user+0xdd/0x150 [ 57.260526] drm_ioctl+0x545/0xa50 [ 57.264049] ? drm_mode_getcrtc+0x870/0x870 [ 57.268357] ? drm_version+0x3d0/0x3d0 [ 57.272231] ? debug_check_no_obj_freed+0x200/0x464 [ 57.277259] ? __might_sleep+0x95/0x190 [ 57.281221] ? trace_hardirqs_off+0x62/0x220 [ 57.285611] ? drm_version+0x3d0/0x3d0 [ 57.289488] do_vfs_ioctl+0xd6e/0x1390 [ 57.293360] ? selinux_file_ioctl+0x46f/0x5e0 [ 57.297858] ? selinux_file_ioctl+0x125/0x5e0 [ 57.302337] ? ioctl_preallocate+0x210/0x210 [ 57.306730] ? selinux_file_mprotect+0x620/0x620 [ 57.311471] ? kmem_cache_free+0x225/0x260 [ 57.315690] ? putname+0xf4/0x130 [ 57.319130] ? do_sys_open+0x31d/0x5d0 [ 57.323005] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 57.328528] ? security_file_ioctl+0x93/0xc0 [ 57.332920] ksys_ioctl+0xab/0xd0 [ 57.339397] __x64_sys_ioctl+0x73/0xb0 [ 57.343268] do_syscall_64+0x103/0x610 [ 57.347147] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 57.352343] RIP: 0033:0x443de9 [ 57.355522] 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 [ 57.374413] RSP: 002b:00007ffef4b0a4f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 57.382107] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000443de9 [ 57.389358] RDX: 0000000020000000 RSI: 00000000c06864a2 RDI: 0000000000000003 [ 57.396614] RBP: 00000000006ce018 R08: 0000000000000000 R09: 00000000004002e0 [ 57.403879] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401af0 [ 57.411130] R13: 0000000000401b80 R14: 0000000000000000 R15: 0000000000000000 [ 57.419268] Kernel Offset: disabled [ 57.422946] Rebooting in 86400 seconds..