kasan: CONFIG_KASAN_INLINE enabled batman_adv: batadv0: Interface deactivated: batadv_slave_1 batman_adv: batadv0: Removing interface: batadv_slave_1 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: 28156 Comm: kworker/u4:0 Not tainted 4.8.0-rc8-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: ffff88013ab40000 task.stack: ffff880128838000 RIP: 0010:[] [] batadv_iv_ogm_queue_add+0x2f/0x1150 net/batman-adv/bat_iv_ogm.c:800 RSP: 0018:ffff88012883fa58 EFLAGS: 00010292 RAX: dffffc0000000000 RBX: ffff88012771cf00 RCX: ffff88012771cf00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: ffff88012883faf8 R08: ffff88012771cf00 R09: 0000000000000001 R10: ffff88013ab40860 R11: ffff88013ab40000 R12: 000000000000003c R13: 0000000000000000 R14: ffff88012771cf00 R15: ffff880139a34c40 FS: 0000000000000000(0000) GS:ffff88013bc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8248036028 CR3: 000000012eaee000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: 0000000000000000 0000000000000000 0000000000000002 0000000000000000 ffff88012883faf8 0000000000000282 0000000000000000 ffffffff86599acd ffff880100000000 00000000000003d4 00000001000029a3 ffff88012286f780 Call Trace: [] batadv_iv_ogm_schedule+0x95e/0xcc0 net/batman-adv/bat_iv_ogm.c:1004 [] batadv_iv_send_outstanding_bat_ogm_packet+0x2d0/0xbe0 net/batman-adv/bat_iv_ogm.c:1830 [] process_one_work+0x67d/0x14f0 kernel/workqueue.c:2096 [] worker_thread+0xda/0xf10 kernel/workqueue.c:2230 [] kthread+0x209/0x2d0 kernel/kthread.c:209 [] ret_from_fork+0x1f/0x40 arch/x86/entry/entry_64.S:393 Code: 00 00 00 fc ff df 55 48 89 e5 41 57 49 89 ff 48 8d 7e 03 41 56 41 55 49 89 f5 41 54 41 89 d4 48 89 fa 48 c1 ea 03 53 48 83 ec 78 <0f> b6 04 02 48 89 fa 48 89 4d a8 83 e2 07 4c 89 45 b8 44 89 4d RIP [] batadv_iv_ogm_queue_add+0x2f/0x1150 net/batman-adv/bat_iv_ogm.c:789 RSP ---[ end trace 3f6e63096a174a2e ]---