BUG: unable to handle kernel NULL pointer dereference at           (null)
IP:           (null)
PGD 0 P4D 0 
Oops: 0010 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 1 PID: 9183 Comm: kworker/1:4 Not tainted 4.14.206-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: pencrypt padata_serial_worker
task: ffff88805bcf4580 task.stack: ffff88805bcf8000
RIP: 0010:          (null)
RSP: 0018:ffff88805bcffcd0 EFLAGS: 00010296
RAX: 0000000000000000 RBX: ffff88809788d590 RCX: 1ffff1100b79ffa2
RDX: 1ffff11012f11aaa RSI: 0000000000000000 RDI: ffff88809788d540
RBP: dffffc0000000000 R08: ffffe8ffffd27170 R09: 0000000000000002
R10: 0000000000000000 R11: ffff88805bcf4580 R12: 0000000000000001
R13: ffff88805bcffd10 R14: ffff8880b0fc9b00 R15: ffff88809788d598
FS:  0000000000000000(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000009a3b9000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 padata_serial_worker+0x232/0x3e0 kernel/padata.c:307
audit: type=1804 audit(1605085341.345:60): pid=16164 uid=0 auid=0 ses=4 op="invalid_pcr" cause="ToMToU" comm="syz-executor.0" name="/root/syzkaller-testdir191385589/syzkaller.pT23Zt/77/bus" dev="sda1" ino=16350 res=1
 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: ffff88805bcffcd0
CR2: 0000000000000000
---[ end trace 2bb93a5461eac250 ]---