batman_adv: batadv0: Interface deactivated: batadv_slave_1
batman_adv: batadv0: Removing interface: batadv_slave_1
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 1 PID: 20356 Comm: kworker/u4:8 Not tainted 4.14.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet
task: ffff88012b2cc040 task.stack: ffff880121398000
RIP: 0010:batadv_iv_ogm_queue_add+0xdf/0x1110 net/batman-adv/bat_iv_ogm.c:772
RSP: 0018:ffff88012139eee0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff88012139f108 RCX: ffff880124367580
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: ffff88012139f130 R08: ffff880124367580 R09: 0000000000000001
R10: ffffed0024273e66 R11: ffff88012b2cc040 R12: 0000000000000084
R13: ffff880129ed6600 R14: dffffc0000000000 R15: ffffed0024273e66
FS:  0000000000000000(0000) GS:ffff88012c100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000001206e2000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 batadv_iv_ogm_schedule+0xcc0/0x10b0 net/batman-adv/bat_iv_ogm.c:976
 batadv_iv_send_outstanding_bat_ogm_packet+0x576/0xa30 net/batman-adv/bat_iv_ogm.c:1803
 process_one_work+0x9f7/0x1a80 kernel/workqueue.c:2119
protocol 88fb is buggy, dev hsr_slave_0
protocol 88fb is buggy, dev hsr_slave_1
 worker_thread+0x215/0x1820 kernel/workqueue.c:2253
 kthread+0x376/0x440 kernel/kthread.c:231
 ret_from_fork+0x2a/0x40 arch/x86/entry/entry_64.S:431
Code: f2 c7 40 20 f2 f2 f2 f2 c7 40 24 00 f2 f2 f2 c7 40 28 f2 f2 f2 f2 c7 40 2c 00 f2 f2 f2 c7 40 30 f3 f3 f3 f3 48 89 f8 48 c1 e8 03 <0f> b6 04 10 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 bd 0c 00 
RIP: batadv_iv_ogm_queue_add+0xdf/0x1110 net/batman-adv/bat_iv_ogm.c:772 RSP: ffff88012139eee0
---[ end trace f1e880689c220f85 ]---