[....] Starting enhanced syslogd: rsyslogd[ 12.682886] audit: type=1400 audit(1519871814.870:4): avc: denied { syslog } for pid=3566 comm="rsyslogd" capability=34 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 [?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] 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 Warning: Permanently added '10.128.10.6' (ECDSA) to the list of known hosts. 2018/03/01 02:37:08 parsed 1 programs 2018/03/01 02:37:08 executed programs: 0 syzkaller login: [ 25.988310] IPVS: Creating netns size=2536 id=1 [ 26.010586] IPVS: Creating netns size=2536 id=2 [ 26.033062] IPVS: Creating netns size=2536 id=3 [ 26.054174] IPVS: Creating netns size=2536 id=4 [ 26.074942] IPVS: Creating netns size=2536 id=5 [ 26.107584] IPVS: Creating netns size=2536 id=6 [ 26.139240] IPVS: Creating netns size=2536 id=7 [ 26.170589] IPVS: Creating netns size=2536 id=8 2018/03/01 02:37:13 executed programs: 461 2018/03/01 02:37:18 executed programs: 889 [ 36.101186] ------------[ cut here ]------------ [ 36.105957] WARNING: CPU: 0 PID: 6490 at kernel/locking/lockdep.c:704 register_lock_class+0xcac/0x1340 [ 36.115371] Kernel panic - not syncing: panic_on_warn set ... [ 36.115371] [ 36.122706] CPU: 0 PID: 6490 Comm: syz-executor3 Not tainted 4.9.85-g6e463bb #54 [ 36.130212] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.139543] ffff8801cc187528 ffffffff81d955d9 ffffffff83a480c0 ffff8801cc187600 [ 36.147528] ffffffff83a5b900 ffffffff81236cfc 0000000000000009 ffff8801cc1875f0 [ 36.155513] ffffffff8142f571 0000000041b58ab3 ffffffff8418b388 ffffffff8142f3b5 [ 36.163489] Call Trace: [ 36.166050] [] dump_stack+0xc1/0x128 [ 36.171384] [] ? register_lock_class+0xcac/0x1340 [ 36.177853] [] panic+0x1bc/0x3a8 [ 36.182846] [] ? percpu_up_read_preempt_enable.constprop.53+0xd7/0xd7 [ 36.191048] [] ? load_image_and_restore+0xf9/0xf9 [ 36.197517] [] ? __warn+0x1a9/0x1e0 [ 36.202765] [] ? register_lock_class+0xcac/0x1340 [ 36.209224] [] __warn+0x1c4/0x1e0 [ 36.214303] [] warn_slowpath_null+0x2c/0x40 [ 36.220251] [] register_lock_class+0xcac/0x1340 [ 36.226546] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 36.233533] [] __lock_acquire+0x16c/0x3640 [ 36.239394] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 36.246386] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 36.253373] [] ? _raw_spin_unlock_irq+0x38/0x50 [ 36.259665] [] ? finish_task_switch+0x1ed/0x630 [ 36.265955] [] ? finish_task_switch+0x1c1/0x630 [ 36.272243] [] ? __schedule+0x64d/0x1ba0 [ 36.277924] [] lock_acquire+0x12e/0x410 [ 36.283517] [] ? lock_sock_nested+0x43/0x120 [ 36.289546] [] _raw_spin_lock_bh+0x3a/0x50 [ 36.295403] [] ? lock_sock_nested+0x43/0x120 [ 36.301431] [] lock_sock_nested+0x43/0x120 [ 36.307286] [] ? __might_fault+0x18e/0x1d0 [ 36.313143] [] do_ip_getsockopt+0x16a/0x15f0 [ 36.319170] [] ? ip_ra_destroy_rcu+0x70/0x70 [ 36.325199] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 36.332180] [] ? futex_wake+0x1ac/0x440 [ 36.337780] [] ? __lock_acquire+0x629/0x3640 [ 36.343811] [] ? check_preemption_disabled+0x3b/0x200 [ 36.350619] [] ? avc_has_perm+0x28b/0x4f0 [ 36.356386] [] ? avc_has_perm+0x2fd/0x4f0 [ 36.362154] [] ? avc_has_perm+0xb0/0x4f0 [ 36.367835] [] ? do_futex+0x3f8/0x15c0 [ 36.373341] [] ? avc_has_perm_noaudit+0x450/0x450 [ 36.379802] [] ? check_preemption_disabled+0x3b/0x200 [ 36.386611] [] ? sock_has_perm+0x1c2/0x3e0 [ 36.392480] [] ? sock_has_perm+0x292/0x3e0 [ 36.398340] [] ? sock_has_perm+0x9f/0x3e0 [ 36.404107] [] compat_ip_getsockopt+0xa0/0x1c0 [ 36.410311] [] ? ip_getsockopt+0x180/0x180 [ 36.416165] [] ? __fget+0x20a/0x3b0 [ 36.421414] [] compat_udp_getsockopt+0x45/0x80 [ 36.427625] [] compat_sock_common_getsockopt+0xb2/0x140 [ 36.434609] [] ? udp_getsockopt+0x80/0x80 [ 36.440379] [] compat_SyS_getsockopt+0x14f/0x2a0 [ 36.446753] [] ? sock_common_getsockopt+0xd0/0xd0 [ 36.453215] [] ? compat_SyS_setsockopt+0x290/0x290 [ 36.459769] [] ? do_fast_syscall_32+0xcf/0x870 [ 36.465979] [] ? compat_SyS_setsockopt+0x290/0x290 [ 36.472527] [] do_fast_syscall_32+0x2f5/0x870 [ 36.478643] [] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 36.485280] [] entry_SYSENTER_compat+0x90/0xa2 [ 36.491932] Dumping ftrace buffer: [ 36.495448] (ftrace buffer empty) [ 36.499126] Kernel Offset: disabled [ 36.502718] Rebooting in 86400 seconds..