BUG: unable to handle kernel NULL pointer dereference at           (null)
IP:           (null)
PGD 64e27067 P4D 64e27067 PUD 64e28067 PMD 0 
Oops: 0010 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 0 PID: 3850 Comm: kworker/0:1 Not tainted 4.14.183-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: pencrypt padata_serial_worker
task: ffff88805b510100 task.stack: ffff8881e6080000
RIP: 0010:          (null)
RSP: 0018:ffff8881e6087cc8 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff8880a0e59a50 RCX: 1ffff1103cc10fa1
RDX: 1ffff110141cb342 RSI: 0000000000000000 RDI: ffff8880a0e59a00
RBP: dffffc0000000000 R08: 0000000000000001 R09: 0000000000000002
R10: 000000000011ce49 R11: ffff88805b510100 R12: 0000000000000001
R13: ffff8881e6087d08 R14: ffff8880a0e59a58 R15: ffff8882191f1500
FS:  0000000000000000(0000) GS:ffff8880aec00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000064e26000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
ip6_tables: ip6tables: counters copy to user failed while replacing table
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 padata_serial_worker+0x24e/0x3b0 kernel/padata.c:307
 process_one_work+0x7c0/0x14c0 kernel/workqueue.c:2116
 worker_thread+0x5d7/0x1080 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: ffff8881e6087cc8
CR2: 0000000000000000
---[ end trace 76e79d11ee2cf95e ]---