[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 33.089338] random: sshd: uninitialized urandom read (32 bytes read) [ 33.402668] kauditd_printk_skb: 9 callbacks suppressed [ 33.402677] audit: type=1400 audit(1569188265.618:35): avc: denied { map } for pid=6804 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 [ 33.458104] random: sshd: uninitialized urandom read (32 bytes read) [ 33.984536] random: sshd: uninitialized urandom read (32 bytes read) [ 34.168060] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.1.12' (ECDSA) to the list of known hosts. [ 39.781235] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 39.899883] audit: type=1400 audit(1569188272.108:36): avc: denied { map } for pid=6817 comm="syz-executor213" path="/root/syz-executor213710255" 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 [ 39.904596] INFO: trying to register non-static key. [ 39.931221] the code is fine but needs lockdep annotation. [ 39.936824] turning off the locking correctness validator. [ 39.942720] CPU: 0 PID: 6817 Comm: syz-executor213 Not tainted 4.14.146 #0 [ 39.949801] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 39.959137] Call Trace: [ 39.961735] dump_stack+0x138/0x197 [ 39.965360] register_lock_class+0x2fd/0x1730 [ 39.969833] ? cpuacct_charge+0x1db/0x360 [ 39.974045] ? find_held_lock+0x35/0x130 [ 39.978114] ? check_noncircular+0x20/0x20 [ 39.982340] __lock_acquire+0x147/0x4620 [ 39.986377] ? save_trace+0x290/0x290 [ 39.990164] ? __lock_acquire+0x5f7/0x4620 [ 39.994373] ? __lock_is_held+0xb6/0x140 [ 39.998611] ? trace_hardirqs_on+0x10/0x10 [ 40.002856] ? trace_hardirqs_on+0x10/0x10 [ 40.007073] ? save_trace+0x290/0x290 [ 40.010867] ? check_preemption_disabled+0x3c/0x250 [ 40.015861] ? finish_task_switch+0x178/0x650 [ 40.020337] ? find_held_lock+0x35/0x130 [ 40.024388] lock_acquire+0x16f/0x430 [ 40.028550] ? flush_work+0x84/0x730 [ 40.032249] flush_work+0xae/0x730 [ 40.035769] ? flush_work+0x84/0x730 [ 40.039477] ? insert_work+0x320/0x320 [ 40.043346] ? finish_task_switch+0x178/0x650 [ 40.047829] ? finish_task_switch+0x14d/0x650 [ 40.052307] ? __schedule+0x7c0/0x1cd0 [ 40.056186] ? mark_held_locks+0xb1/0x100 [ 40.060318] ? __cancel_work_timer+0x166/0x480 [ 40.064878] __cancel_work_timer+0x2f0/0x480 [ 40.069280] ? cancel_delayed_work+0x20/0x20 [ 40.073675] ? preempt_schedule+0x4b/0x60 [ 40.077822] ? smc_accept_dequeue+0x3b6/0x5e0 [ 40.082338] ? __local_bh_enable_ip+0x15e/0x1a0 [ 40.086987] cancel_work_sync+0x18/0x20 [ 40.090939] smc_close_active+0x68e/0xba0 [ 40.095078] smc_release+0x45a/0x630 [ 40.098798] __sock_release+0xce/0x2b0 [ 40.102661] ? __sock_release+0x2b0/0x2b0 [ 40.106782] sock_close+0x1b/0x30 [ 40.110231] __fput+0x275/0x7a0 [ 40.113488] ____fput+0x16/0x20 [ 40.116745] task_work_run+0x114/0x190 [ 40.120611] do_exit+0x7df/0x2c10 [ 40.124056] ? mm_update_next_owner+0x5d0/0x5d0 [ 40.128733] ? release_sock+0x14a/0x1b0 [ 40.132953] ? smc_listen+0x141/0x400 [ 40.136736] ? SyS_listen+0x181/0x230 [ 40.140525] do_group_exit+0x111/0x330 [ 40.144395] SyS_exit_group+0x1d/0x20 [ 40.148183] ? do_group_exit+0x330/0x330 [ 40.152238] do_syscall_64+0x1e8/0x640 [ 40.156101] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 40.160932] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 40.166098] RIP: 0033:0x43ed88 [ 40.169263] RSP: 002b:00007ffe546c5ad8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 40.176946] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ed88 [ 40.184194] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 40.191453] RBP: 00000000004be588 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 40.198711] R10: 0000000000