batman_adv: batadv0: Interface deactivated: batadv_slave_0 batman_adv: batadv0: Removing interface: batadv_slave_0 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: 7405 Comm: kworker/u4:5 Not tainted 4.14.171-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: ffff888060096180 task.stack: ffff8880600b8000 RIP: 0010:batadv_iv_ogm_schedule+0x24b/0xe20 net/batman-adv/bat_iv_ogm.c:951 RSP: 0018:ffff8880600bfc18 EFLAGS: 00010203 RAX: dffffc0000000000 RBX: 0000000000002400 RCX: 1ffff1100c012d49 RDX: 0000000000000002 RSI: ffff888060096a28 RDI: 0000000000000016 RBP: ffff8880600bfcb8 R08: 0000000000000001 R09: ffff888060096a48 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000006 R14: ffff888096029c80 R15: ffff888096029c80 FS: 0000000000000000(0000) GS:ffff8880aed00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b3082d000 CR3: 0000000066f84000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: batadv_iv_send_outstanding_bat_ogm_packet+0x4a1/0x680 net/batman-adv/bat_iv_ogm.c:1809 process_one_work+0x863/0x1600 kernel/workqueue.c:2114 worker_thread+0x5d9/0x1050 kernel/workqueue.c:2248 kthread+0x319/0x430 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 Code: 48 c1 ea 03 80 3c 02 00 0f 85 a5 0b 00 00 4d 8b a7 80 00 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d 7c 24 16 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 RIP: batadv_iv_ogm_schedule+0x24b/0xe20 net/batman-adv/bat_iv_ogm.c:951 RSP: ffff8880600bfc18 ---[ end trace a523204b8b54c43f ]---