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: 0 PID: 22317 Comm: kworker/u4:9 Not tainted 4.14.222-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: ffff8880577b8080 task.stack: ffff888234cb8000
RIP: 0010:batadv_iv_ogm_schedule_buff+0xa42/0xf80 net/batman-adv/bat_iv_ogm.c:1015
RSP: 0018:ffff888234cbfc50 EFLAGS: 00010202
RAX: 000000000000000e RBX: 0000000000000000 RCX: 1ffffffff11981ac
RDX: 0000000000000000 RSI: ffffffff87ccd500 RDI: 0000000000000070
RBP: dffffc0000000000 R08: 0000000000000000 R09: 0000000000020012
R10: ffff8880577b8980 R11: ffff8880577b8080 R12: 0000000000000000
R13: ffff8880a5d5c940 R14: ffff8880a5d5c940 R15: ffffed1014bab936
FS:  0000000000000000(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2ec2c000 CR3: 00000000af063000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:1041 [inline]
 batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:1034 [inline]
 batadv_iv_send_outstanding_bat_ogm_packet+0x500/0x6f0 net/batman-adv/bat_iv_ogm.c:1859
 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: 03 80 3c 28 00 0f 85 46 05 00 00 48 8b 1b 48 81 fb 40 fe 9b 8c 0f 84 bf 01 00 00 e8 99 f4 6f fa 48 8d 7b 70 48 89 f8 48 c1 e8 03 <80> 3c 28 00 0f 85 03 05 00 00 48 8b 04 24 4c 8b 63 70 80 38 00 
RIP: batadv_iv_ogm_schedule_buff+0xa42/0xf80 net/batman-adv/bat_iv_ogm.c:1015 RSP: ffff888234cbfc50
---[ end trace 58e7523b0c778d55 ]---