[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 20.220572] random: sshd: uninitialized urandom read (32 bytes read, 33 bits of entropy available) [?25l[?1c7[ ok 8[?25h[?0c. [ 21.028563] random: sshd: uninitialized urandom read (32 bytes read, 33 bits of entropy available) [ 21.338394] random: sshd: uninitialized urandom read (32 bytes read, 35 bits of entropy available) Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 22.243329] random: nonblocking pool is initialized Warning: Permanently added '10.128.0.63' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 28.755482] kasan: CONFIG_KASAN_INLINE enabled [ 28.759949] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 28.772860] Dumping ftrace buffer: [ 28.776373] (ftrace buffer empty) [ 28.780057] Modules linked in: [ 28.783345] CPU: 1 PID: 1843 Comm: kworker/1:2 Not tainted 4.4.138-gcf21a9a #64 [ 28.790764] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.800141] Workqueue: events xfrm_hash_rebuild [ 28.804907] task: ffff8801d3fe1800 task.stack: ffff8801d3ab0000 [ 28.810936] RIP: 0010:[] [] xfrm_hash_rebuild+0x4c4/0xae0 [ 28.819784] RSP: 0018:ffff8801d3ab7bb8 EFLAGS: 00010246 [ 28.825206] RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000004 [ 28.832459] RDX: 0000000000000000 RSI: ffffffff833c6482 RDI: ffffffff849190f0 [ 28.839705] RBP: ffff8801d3ab7c40 R08: ffffffff85378920 R09: 0000000000000000 [ 28.846949] R10: 0000000000000001 R11: ffff8801d3fe1800 R12: ffff8800bb265500 [ 28.854193] R13: 0000000000000001 R14: ffffffff849190d8 R15: ffffffff849190a8 [ 28.861450] FS: 0000000000000000(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 28.869650] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.875507] CR2: 00000000004a19a4 CR3: 00000001d8cc2000 CR4: 00000000001606f0 [ 28.882754] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.890003] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.897244] Stack: [ 28.899366] ffffffff81181f4f ffff8801d3ab7c00 fffffbfff0923219 ffffffff849190cc [ 28.907364] ffffffff84919478 ffffffff84919180 1ffffffff0923280 ffffffff8491911d [ 28.915363] ffffffff84919078 ffffffff84917ac0 ffffffff84919138 0000000000000002 [ 28.923352] Call Trace: [ 28.925914] [] ? process_one_work+0x7df/0x1600 [ 28.932118] [] process_one_work+0x7df/0x1600 [ 28.938149] [] ? process_one_work+0x6fa/0x1600 [ 28.944353] [] ? cancel_delayed_work_sync+0x20/0x20 [ 28.951006] [] worker_thread+0xd9/0xfc0 [ 28.956607] [] ? ___preempt_schedule+0x12/0x14 [ 28.962814] [] kthread+0x268/0x300 [ 28.968820] [] ? process_one_work+0x1600/0x1600 [ 28.975124] [] ? kthread_create_on_node+0x400/0x400 [ 28.981798] [] ? kthread_create_on_node+0x400/0x400 [ 28.988439] [] ret_from_fork+0x55/0x80 [ 28.993949] [] ? kthread_create_on_node+0x400/0x400 [ 29.000584] Code: 7c 08 84 d2 0f 85 43 04 00 00 48 8b 7d c0 49 8d b4 24 f4 00 00 00 41 0f b7 94 24 74 02 00 00 e8 23 ec ff ff 49 89 c5 48 c1 e8 03 <80> 3c 18 00 0f 85 eb 03 00 00 49 8b 55 00 49 8d 44 24 08 48 89 [ 29.027469] RIP [] xfrm_hash_rebuild+0x4c4/0xae0 [ 29.033972] RSP [ 29.037631] ---[ end trace b38d7eb8c071067c ]--- [ 29.042368] Kernel panic - not syncing: Fatal exception in interrupt [ 29.049447] Dumping ftrace buffer: [ 29.052968] (ftrace buffer empty) [ 29.056652] Kernel Offset: disabled [ 29.060250] Rebooting in 86400 seconds..