IPVS: ovf: UDP 224.0.0.2:0 - no destination available
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refcount_t: underflow; use-after-free.
WARNING: CPU: 3 PID: 13 at lib/refcount.c:28 refcount_warn_saturate+0x14a/0x210 lib/refcount.c:28
Modules linked in:
CPU: 3 UID: 0 PID: 13 Comm: kworker/u32:1 Not tainted 6.16.0-rc7-syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: events_unbound cfg80211_wiphy_work
RIP: 0010:refcount_warn_saturate+0x14a/0x210 lib/refcount.c:28
Code: ff 89 de e8 38 f2 e0 fc 84 db 0f 85 66 ff ff ff e8 4b f7 e0 fc c6 05 76 aa b6 0b 01 90 48 c7 c7 a0 1f 15 8c e8 d7 fe 9f fc 90 <0f> 0b 90 90 e9 43 ff ff ff e8 28 f7 e0 fc 0f b6 1d 51 aa b6 0b 31
RSP: 0018:ffffc900006f8d90 EFLAGS: 00010082
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff817af1a8
RDX: ffff88801dac0000 RSI: ffffffff817af1b5 RDI: 0000000000000001
RBP: ffff88803bf14aa8 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffff88803bf14aa8
R13: ffff888013203800 R14: 0000000000000015 R15: 1ffff11020a2880c
FS:  0000000000000000(0000) GS:ffff8880d6a20000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555676d2808 CR3: 000000000e382000 CR4: 0000000000352ef0
DR0: 0000000000000006 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 __refcount_sub_and_test include/linux/refcount.h:400 [inline]
 __refcount_dec_and_test include/linux/refcount.h:432 [inline]
 refcount_dec_and_test include/linux/refcount.h:450 [inline]
 p9_req_put+0x1ec/0x250 net/9p/client.c:404
 req_done+0x1dc/0x2e0 net/9p/trans_virtio.c:147
 vring_interrupt drivers/virtio/virtio_ring.c:2715 [inline]
 vring_interrupt+0x31e/0x400 drivers/virtio/virtio_ring.c:2690
 __handle_irq_event_percpu+0x229/0x7d0 kernel/irq/handle.c:158
 handle_irq_event_percpu kernel/irq/handle.c:193 [inline]
 handle_irq_event+0xab/0x1e0 kernel/irq/handle.c:210
 handle_edge_irq+0x28e/0xab0 kernel/irq/chip.c:797
 generic_handle_irq_desc include/linux/irqdesc.h:173 [inline]
 handle_irq arch/x86/kernel/irq.c:254 [inline]
 call_irq_handler arch/x86/kernel/irq.c:266 [inline]
 __common_interrupt+0xe2/0x250 arch/x86/kernel/irq.c:292
 common_interrupt+0xba/0xe0 arch/x86/kernel/irq.c:285
 </IRQ>
 <TASK>
 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693
RIP: 0010:get_current arch/x86/include/asm/current.h:25 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x8/0x70 kernel/kcov.c:216
Code: e9 5d 4e 5a 00 be 03 00 00 00 5b e9 92 07 1f 03 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 34 24 <65> 48 8b 15 98 17 14 12 65 8b 05 a9 17 14 12 a9 00 01 ff 00 74 1d
RSP: 0018:ffffc90000107240 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff8ad7d79f
RDX: ffff88801dac0000 RSI: ffffffff8ad7d7ac RDI: 0000000000000005
RBP: ffff888013bb3338 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffffc900001078c0
R13: ffff888013bb3338 R14: 0000000000000001 R15: ffffc900001076e0
 regulatory_hint_found_beacon+0xec/0x7b0 net/wireless/reg.c:3678
 cfg80211_inform_single_bss_data+0xfed/0x1df0 net/wireless/scan.c:2325
 cfg80211_inform_bss_data+0x224/0x3bc0 net/wireless/scan.c:3222
 cfg80211_inform_bss_frame_data+0x26f/0x750 net/wireless/scan.c:3313
 ieee80211_bss_info_update+0x310/0xab0 net/mac80211/scan.c:226
 ieee80211_rx_bss_info net/mac80211/ibss.c:1094 [inline]
 ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1573 [inline]
 ieee80211_ibss_rx_queued_mgmt+0x1905/0x2fd0 net/mac80211/ibss.c:1600
 ieee80211_iface_process_skb net/mac80211/iface.c:1670 [inline]
 ieee80211_iface_work+0xbf4/0x1020 net/mac80211/iface.c:1724
 cfg80211_wiphy_work+0x3dc/0x550 net/wireless/core.c:435
 process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3238
 process_scheduled_works kernel/workqueue.c:3321 [inline]
 worker_thread+0x6c8/0xf10 kernel/workqueue.c:3402
 kthread+0x3c5/0x780 kernel/kthread.c:464
 ret_from_fork+0x5d4/0x6f0 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
----------------
Code disassembly (best guess):
   0:	e9 5d 4e 5a 00       	jmp    0x5a4e62
   5:	be 03 00 00 00       	mov    $0x3,%esi
   a:	5b                   	pop    %rbx
   b:	e9 92 07 1f 03       	jmp    0x31f07a2
  10:	66 90                	xchg   %ax,%ax
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	f3 0f 1e fa          	endbr64
  26:	48 8b 34 24          	mov    (%rsp),%rsi
* 2a:	65 48 8b 15 98 17 14 	mov    %gs:0x12141798(%rip),%rdx        # 0x121417ca <-- trapping instruction
  31:	12
  32:	65 8b 05 a9 17 14 12 	mov    %gs:0x121417a9(%rip),%eax        # 0x121417e2
  39:	a9 00 01 ff 00       	test   $0xff0100,%eax
  3e:	74 1d                	je     0x5d