audit: type=1804 audit(1609933984.965:36): pid=18804 uid=0 auid=0 ses=4 op="invalid_pcr" cause="open_writers" comm="syz-executor.5" name="/root/syzkaller-testdir916933434/syzkaller.rbXNpb/264/bus" dev="sda1" ino=16145 res=1 TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. BUG: unable to handle kernel NULL pointer dereference at (null) IP: (null) PGD af1a0067 P4D af1a0067 PUD 9df93067 PMD 0 Oops: 0010 [#1] PREEMPT SMP KASAN Modules linked in: CPU: 0 PID: 3 Comm: kworker/0:0 Not tainted 4.14.213-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: pencrypt padata_serial_worker task: ffff8880b5fdc0c0 task.stack: ffff8880b5fe0000 RIP: 0010: (null) RSP: 0018:ffff8880b5fe7cd0 EFLAGS: 00010296 RAX: 0000000000000000 RBX: ffff88809daae850 RCX: 1ffff11016bfcfa2 RDX: 1ffff11013b55d02 RSI: 0000000000000000 RDI: ffff88809daae800 RBP: dffffc0000000000 R08: ffffe8ffffc24360 R09: 0000000000000002 R10: 0000000000000000 R11: ffff8880b5fdc0c0 R12: 0000000000000001 R13: ffff8880b5fe7d10 R14: ffff888238811200 R15: ffff88809daae858 FS: 0000000000000000(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000000a35e0000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: padata_serial_worker+0x232/0x3e0 kernel/padata.c:307 process_one_work+0x793/0x14a0 kernel/workqueue.c:2116 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2250 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 Code: Bad RIP value. RIP: (null) RSP: ffff8880b5fe7cd0 CR2: 0000000000000000 ---[ end trace 9757c4b0f65cf3f5 ]---