[....] 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: [ 32.744160] random: sshd: uninitialized urandom read (32 bytes read) [ 32.995835] kauditd_printk_skb: 9 callbacks suppressed [ 32.995843] audit: type=1400 audit(1566805324.106:35): avc: denied { map } for pid=6736 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 [ 33.036359] random: sshd: uninitialized urandom read (32 bytes read) [ 33.565151] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.187' (ECDSA) to the list of known hosts. [ 39.380572] urandom_read: 1 callbacks suppressed [ 39.380576] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 39.499188] audit: type=1400 audit(1566805330.606:36): avc: denied { map } for pid=6749 comm="syz-executor180" path="/root/syz-executor180020206" 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 [ 39.503596] INFO: trying to register non-static key. [ 39.530606] the code is fine but needs lockdep annotation. [ 39.536203] turning off the locking correctness validator. [ 39.541915] CPU: 1 PID: 6749 Comm: syz-executor180 Not tainted 4.14.140 #36 [ 39.549015] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 39.558436] Call Trace: [ 39.561018] dump_stack+0x138/0x197 [ 39.564626] register_lock_class+0x2fd/0x1730 [ 39.569102] ? cpuacct_charge+0x1db/0x360 [ 39.573234] ? find_held_lock+0x35/0x130 [ 39.577890] ? check_noncircular+0x20/0x20 [ 39.582104] __lock_acquire+0x147/0x4620 [ 39.586148] ? save_trace+0x290/0x290 [ 39.589929] ? __lock_acquire+0x5f7/0x4620 [ 39.594138] ? __lock_is_held+0xb6/0x140 [ 39.598181] ? trace_hardirqs_on+0x10/0x10 [ 39.602483] ? trace_hardirqs_on+0x10/0x10 [ 39.606709] ? save_trace+0x290/0x290 [ 39.610503] ? check_preemption_disabled+0x3c/0x250 [ 39.615511] ? finish_task_switch+0x178/0x650 [ 39.620075] ? find_held_lock+0x35/0x130 [ 39.624116] lock_acquire+0x16f/0x430 [ 39.628059] ? flush_work+0x84/0x730 [ 39.631924] flush_work+0xae/0x730 [ 39.635545] ? flush_work+0x84/0x730 [ 39.639255] ? insert_work+0x320/0x320 [ 39.643120] ? finish_task_switch+0x178/0x650 [ 39.647597] ? finish_task_switch+0x14d/0x650 [ 39.652161] ? __schedule+0x7c0/0x1cd0 [ 39.656028] ? mark_held_locks+0xb1/0x100 [ 39.660155] ? __cancel_work_timer+0x166/0x480 [ 39.664725] __cancel_work_timer+0x2f0/0x480 [ 39.669108] ? cancel_delayed_work+0x20/0x20 [ 39.673501] ? preempt_schedule+0x4b/0x60 [ 39.677641] ? smc_accept_dequeue+0x3b6/0x5e0 [ 39.682113] ? __local_bh_enable_ip+0x15e/0x1a0 [ 39.686919] cancel_work_sync+0x18/0x20 [ 39.690976] smc_close_active+0x68e/0xba0 [ 39.695107] smc_release+0x45a/0x630 [ 39.698799] __sock_release+0xce/0x2b0 [ 39.702668] ? __sock_release+0x2b0/0x2b0 [ 39.707026] sock_close+0x1b/0x30 [ 39.710467] __fput+0x275/0x7a0 [ 39.713744] ____fput+0x16/0x20 [ 39.717004] task_work_run+0x114/0x190 [ 39.720867] do_exit+0x7df/0x2c10 [ 39.724303] ? mm_update_next_owner+0x5d0/0x5d0 [ 39.728946] ? release_sock+0x14a/0x1b0 [ 39.732910] ? smc_listen+0x141/0x400 [ 39.736691] ? SyS_listen+0x181/0x230 [ 39.740477] do_group_exit+0x111/0x330 [ 39.744521] SyS_exit_group+0x1d/0x20 [ 39.748307] ? do_group_exit+0x330/0x330 [ 39.752357] do_syscall_64+0x1e8/0x640 [ 39.756227] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 39.761047] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 39.766354] RIP: 0033:0x43ed88 [ 39.769530] RSP: 002b:00007fff63eeec68 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 39.777214] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ed88 [ 39.784460] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 39.791780] RBP: 00000000004be588 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 39.799043] R1