Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.154' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 33.941025] audit: type=1804 audit(1605498664.442:2): pid=8012 uid=0 auid=0 ses=5 op="invalid_pcr" cause="open_writers" comm="syz-executor716" name="/root/bus" dev="sda1" ino=15707 res=1 [ 33.941977] TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. [ 33.970294] BUG: unable to handle kernel NULL pointer dereference at (null) [ 33.978267] IP: (null) [ 33.981609] PGD a1b7b067 P4D a1b7b067 PUD aa629067 PMD 0 [ 33.987980] Oops: 0010 [#1] PREEMPT SMP KASAN [ 33.992459] Modules linked in: [ 33.995644] CPU: 0 PID: 3299 Comm: kworker/0:2 Not tainted 4.14.206-syzkaller #0 [ 34.003179] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.012549] Workqueue: pencrypt padata_serial_worker [ 34.017642] task: ffff8880aa6f0600 task.stack: ffff8880aabc8000 [ 34.023702] RIP: 0010: (null) [ 34.027573] RSP: 0018:ffff8880aabcfcd0 EFLAGS: 00010296 [ 34.032921] RAX: 0000000000000000 RBX: ffff8880a3888090 RCX: 1ffff11015579fa2 [ 34.040821] RDX: 1ffff1101471100a RSI: 0000000000000000 RDI: ffff8880a3888040 [ 34.048115] RBP: dffffc0000000000 R08: ffffe8ffffc27170 R09: 0000000000000002 [ 34.057596] R10: 0000000000000000 R11: ffff8880aa6f0600 R12: 0000000000000001 [ 34.064858] R13: ffff8880aabcfd10 R14: ffff8880b0f7ff00 R15: ffff8880a3888098 [ 34.072121] FS: 0000000000000000(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 34.080338] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.086209] CR2: 0000000000000000 CR3: 000000009f028000 CR4: 00000000001406f0 [ 34.093583] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.100845] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.108206] Call Trace: [ 34.110817] padata_serial_worker+0x232/0x3e0 [ 34.115362] ? lock_acquire+0x170/0x3f0 [ 34.119333] ? padata_start+0x80/0x80 [ 34.123827] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 34.129272] process_one_work+0x793/0x14a0 [ 34.133517] ? work_busy+0x320/0x320 [ 34.137224] ? worker_thread+0x158/0xff0 [ 34.141283] ? _raw_spin_unlock_irq+0x24/0x80 [ 34.145791] worker_thread+0x5cc/0xff0 [ 34.149680] ? rescuer_thread+0xc80/0xc80 [ 34.153841] kthread+0x30d/0x420 [ 34.157199] ? kthread_create_on_node+0xd0/0xd0 [ 34.161861] ret_from_fork+0x24/0x30 [ 34.165685] Code: Bad RIP value. [ 34.169358] RIP: (null) RSP: ffff8880aabcfcd0 [ 34.174709] CR2: 0000000000000000 [ 34.178184] ---[ end trace f6b31047ff78f7a3 ]--- [ 34.183185] Kernel panic - not syncing: Fatal exception in interrupt [ 34.190295] Kernel Offset: disabled [ 34.193912] Rebooting in 86400 seconds..