[ OK ] Started OpenBSD Secure Shell server. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.10.1' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 34.373233] audit: type=1400 audit(1592246415.403:8): avc: denied { execmem } for pid=6356 comm="syz-executor509" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 34.377945] INFO: trying to register non-static key. [ 34.398219] the code is fine but needs lockdep annotation. [ 34.403855] turning off the locking correctness validator. [ 34.409451] CPU: 0 PID: 6356 Comm: syz-executor509 Not tainted 4.14.184-syzkaller #0 [ 34.417329] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.426654] Call Trace: [ 34.429239] dump_stack+0x1b2/0x283 [ 34.432839] register_lock_class+0x32b/0x1320 [ 34.437305] ? static_obj+0x50/0x50 [ 34.440914] __lock_acquire+0x180/0x42a0 [ 34.444956] ? cpuacct_charge+0x1ce/0x350 [ 34.449088] ? __lock_acquire+0x655/0x42a0 [ 34.453295] ? trace_hardirqs_on+0x10/0x10 [ 34.457512] ? trace_hardirqs_on+0x10/0x10 [ 34.461719] ? check_preemption_disabled+0x35/0x240 [ 34.466718] lock_acquire+0x170/0x3f0 [ 34.470489] ? flush_work+0x82/0x780 [ 34.474172] flush_work+0xae/0x780 [ 34.477699] ? flush_work+0x82/0x780 [ 34.481381] ? mark_held_locks+0xa6/0xf0 [ 34.485409] ? insert_work+0x2f0/0x2f0 [ 34.489287] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 34.494284] ? _raw_spin_unlock_irq+0x5a/0x90 [ 34.498762] ? finish_task_switch+0x178/0x610 [ 34.503228] ? finish_task_switch+0x14d/0x610 [ 34.507695] ? mark_held_locks+0xa6/0xf0 [ 34.511810] ? __cancel_work_timer+0x2c9/0x460 [ 34.516411] __cancel_work_timer+0x329/0x460 [ 34.520836] ? cancel_delayed_work+0x20/0x20 [ 34.525220] ? ___preempt_schedule+0x16/0x18 [ 34.529642] ? ___preempt_schedule+0x16/0x18 [ 34.534024] ? smc_accept_dequeue+0x3b1/0x5f0 [ 34.538489] smc_close_active+0x684/0xb90 [ 34.542608] smc_release+0x40d/0x610 [ 34.546325] __sock_release+0xcd/0x2b0 [ 34.550189] ? __sock_release+0x2b0/0x2b0 [ 34.554307] sock_close+0x15/0x20 [ 34.557757] __fput+0x25f/0x7a0 [ 34.561008] task_work_run+0x113/0x190 [ 34.564869] do_exit+0x9fb/0x2ae0 [ 34.568306] ? ___preempt_schedule+0x16/0x18 [ 34.572685] ? mm_update_next_owner+0x5b0/0x5b0 [ 34.577324] ? smc_listen+0x131/0x3e0 [ 34.581118] ? __local_bh_enable_ip+0x124/0x160 [ 34.585846] ? smc_listen+0x131/0x3e0 [ 34.589622] ? SyS_listen+0x170/0x210 [ 34.593417] do_group_exit+0x100/0x2e0 [ 34.597276] SyS_exit_group+0x19/0x20 [ 34.601047] ? do_group_exit+0x2e0/0x2e0 [ 34.605076] do_syscall_64+0x1d5/0x640 [ 34.608949] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 34.614127] RIP: 0033:0x43ede8 [ 34.617290] RSP: 002b:00007fffca0c6558 EFLAGS: 00000246 ORIG_RAX: 0000000000000