WARNING: CPU: 0 PID: 7 at net/batman-adv/bat_iv_ogm.c:423 batadv_iv_ogm_emit net/batman-adv/bat_iv_ogm.c:420 [inline]
WARNING: CPU: 0 PID: 7 at net/batman-adv/bat_iv_ogm.c:423 batadv_iv_send_outstanding_bat_ogm_packet+0x58d/0x820 net/batman-adv/bat_iv_ogm.c:1723
Modules linked in:

CPU: 0 PID: 7 Comm: kworker/u4:0 Not tainted 5.13.0-rc4-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

RIP: 0010:batadv_iv_ogm_emit net/batman-adv/bat_iv_ogm.c:420 [inline]
RIP: 0010:batadv_iv_send_outstanding_bat_ogm_packet+0x58d/0x820 net/batman-adv/bat_iv_ogm.c:1723
Code: 85 ba 01 00 00 e8 a3 18 90 f9 4c 8b 75 d0 49 bf 00 00 00 00 00 fc ff df 48 8b 5d c8 48 85 db 0f 85 b5 01 00 00 e8 83 18 90 f9 <0f> 0b e9 d0 00 00 00 e8 77 18 90 f9 4c 8b 6d b8 48 8b 5d c0 48 89
RSP: 0018:ffff888100397c40 EFLAGS: 00010246

RAX: 000000000000003e RBX: ffff8881187cc000 RCX: e3de4eb027773300
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffff888100397cd8 R08: ffffffff816319d5 R09: ffffed103ec86168
R10: ffffed103ec86168 R11: 0000000000000000 R12: ffff8881187cc000
R13: ffff888100b63c48 R14: ffff888100b63c00 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881f6500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055e995d29478 CR3: 0000000107587006 CR4: 00000000001706e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 process_one_work+0x7ce/0x1040 kernel/workqueue.c:2276
 worker_thread+0xb60/0x1420 kernel/workqueue.c:2422
 kthread+0x3b0/0x3d0 kernel/kthread.c:313
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
irq event stamp: 429111
hardirqs last  enabled at (430057): [<ffffffff880ade12>] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline]
hardirqs last  enabled at (430057): [<ffffffff880ade12>] _raw_spin_unlock_irq+0x22/0x80 kernel/locking/spinlock.c:199
hardirqs last disabled at (430098): [<ffffffff8809d04c>] __schedule+0x10c/0x10c0 kernel/sched/core.c:5043
softirqs last  enabled at (430192): [<ffffffff814bffa3>] invoke_softirq kernel/softirq.c:433 [inline]
softirqs last  enabled at (430192): [<ffffffff814bffa3>] __irq_exit_rcu+0x213/0x240 kernel/softirq.c:637
softirqs last disabled at (430107): [<ffffffff814bffa3>] invoke_softirq kernel/softirq.c:433 [inline]
softirqs last disabled at (430107): [<ffffffff814bffa3>] __irq_exit_rcu+0x213/0x240 kernel/softirq.c:637
---[ end trace 9e1489d417de7f7d ]---