------------[ cut here ]------------
refcount_t: decrement hit 0; leaking memory.
WARNING: CPU: 0 PID: 25 at lib/refcount.c:31 refcount_warn_saturate+0xbf/0x1e0 lib/refcount.c:31
Modules linked in:
CPU: 0 PID: 25 Comm: kworker/u4:1 Not tainted 5.12.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_purge_orig
RIP: 0010:refcount_warn_saturate+0xbf/0x1e0 lib/refcount.c:31
Code: 1d 3e 55 e8 09 31 ff 89 de e8 bd e7 aa fd 84 db 75 e0 e8 04 e1 aa fd 48 c7 c7 a0 e8 c1 89 c6 05 1e 55 e8 09 01 e8 ce f7 fa 04 <0f> 0b eb c4 e8 e8 e0 aa fd 0f b6 1d 0d 55 e8 09 31 ff 89 de e8 88
RSP: 0018:ffffc90000007e10 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff888011673880 RSI: ffffffff815c4d85 RDI: fffff52000000fb4
RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff815bdb1e R11: 0000000000000000 R12: ffff88802feae000
R13: ffff88802feae568 R14: ffff8880130df5e0 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31e23000 CR3: 00000000550cd000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 __refcount_dec include/linux/refcount.h:344 [inline]
 refcount_dec include/linux/refcount.h:359 [inline]
 dev_put include/linux/netdevice.h:4135 [inline]
 in_dev_finish_destroy+0x172/0x1b0 net/ipv4/devinet.c:244
 in_dev_put include/linux/inetdevice.h:265 [inline]
 in_dev_rcu_put+0x83/0xb0 net/ipv4/devinet.c:301
 rcu_do_batch kernel/rcu/tree.c:2559 [inline]
 rcu_core+0x74a/0x12f0 kernel/rcu/tree.c:2794
 __do_softirq+0x29b/0x9f6 kernel/softirq.c:345
 invoke_softirq kernel/softirq.c:221 [inline]
 __irq_exit_rcu kernel/softirq.c:422 [inline]
 irq_exit_rcu+0x134/0x200 kernel/softirq.c:434
 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1100
 </IRQ>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:632
RIP: 0010:__local_bh_enable_ip+0xa8/0x120 kernel/softirq.c:205
Code: 1d cd d3 bc 7e 65 8b 05 c6 d3 bc 7e a9 00 ff ff 00 74 45 bf 01 00 00 00 e8 75 09 09 00 e8 f0 c4 34 00 fb 65 8b 05 a8 d3 bc 7e <85> c0 74 58 5b 5d c3 65 8b 05 d6 da bc 7e 85 c0 75 a2 0f 0b eb 9e
RSP: 0018:ffffc90000dffbe0 EFLAGS: 00000202
RAX: 0000000080000000 RBX: 00000000fffffe00 RCX: 1ffffffff1f62f12
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffffff88a69ef0 R08: 0000000000000001 R09: ffffffff8fac6977
R10: 0000000000000001 R11: 0000000000000000 R12: dffffc0000000000
R13: ffff888059724d50 R14: ffff88801160a300 R15: 00000000000001ff
 spin_unlock_bh include/linux/spinlock.h:399 [inline]
 batadv_purge_orig_ref+0xee0/0x1540 net/batman-adv/originator.c:1329
 batadv_purge_orig+0x17/0x60 net/batman-adv/originator.c:1342
 process_one_work+0x98d/0x1600 kernel/workqueue.c:2275
 worker_thread+0x64c/0x1120 kernel/workqueue.c:2421
 kthread+0x3b1/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294