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: 65 Comm: kworker/u4:2 Not tainted 4.10.0-rc3-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: ffff88012ac0e0c0 task.stack: ffff88012ac10000 RIP: 0010:batadv_iv_ogm_queue_add+0x2f/0xdb0 net/batman-adv/bat_iv_ogm.c:773 RSP: 0018:ffff88012ac17b78 EFLAGS: 00010286 RAX: dffffc0000000000 RBX: ffff88010d579580 RCX: ffff88010d579580 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: ffff88012ac17c10 R08: ffff88010d579580 R09: 0000000000000001 R10: ffff88012ac0e918 R11: ffff88012ac0e0c0 R12: 000000000000003c R13: 0000000000000000 R14: ffff88010d579580 R15: ffff8801182264c0 FS: 0000000000000000(0000) GS:ffff88012c100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc25cbc3000 CR3: 0000000123237000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: batadv_iv_ogm_schedule+0x95a/0xcc0 net/batman-adv/bat_iv_ogm.c:977 batadv_iv_send_outstanding_bat_ogm_packet+0x4e0/0x770 net/batman-adv/bat_iv_ogm.c:1803 process_one_work+0x72f/0x16a0 kernel/workqueue.c:2098 worker_thread+0xe1/0x1110 kernel/workqueue.c:2232 kthread+0x2c9/0x3d0 kernel/kthread.c:227 ret_from_fork+0x2a/0x40 arch/x86/entry/entry_64.S:427 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 70 <0f> b6 04 02 48 89 fa 48 89 4d b0 83 e2 07 4c 89 45 c0 44 89 4d RIP: batadv_iv_ogm_queue_add+0x2f/0xdb0 net/batman-adv/bat_iv_ogm.c:773 RSP: ffff88012ac17b78 ---[ end trace 847f38648a1be9cd ]---