------------[ cut here ]------------
WARNING: CPU: 1 PID: 55 at net/mac80211/tx.c:5057 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5057 [inline]
WARNING: CPU: 1 PID: 55 at net/mac80211/tx.c:5057 __ieee80211_beacon_get+0x1141/0x1520 net/mac80211/tx.c:5468
Modules linked in:
CPU: 1 PID: 55 Comm: kworker/1:1H Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
Workqueue: events_highpri snd_vmidi_output_work
RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5057 [inline]
RIP: 0010:__ieee80211_beacon_get+0x1141/0x1520 net/mac80211/tx.c:5468
Code: f7 4c 89 ef e8 f0 56 b5 f7 45 31 ed 4c 8b bc 24 a0 00 00 00 e9 7f fe ff ff e8 bb 4b 77 f7 0f 0b e9 61 f8 ff ff e8 af 4b 77 f7 <0f> 0b e9 85 fb ff ff e8 a3 4b 77 f7 48 c7 c7 40 99 65 8e 4c 89 e6
RSP: 0018:ffffc900001f0a18 EFLAGS: 00010246
RAX: ffffffff8a104501 RBX: dffffc0000000000 RCX: ffff88801b6fbc00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff88801b6fbc00 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff88805c946440
R13: ffff88805cf23c24 R14: ffff88805c946930 R15: ffff88805cf23c00
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000007000 CR3: 000000005b200000 CR4: 00000000003506e0
Call Trace:
 <IRQ>
 ieee80211_beacon_get_tim+0xbf/0x580 net/mac80211/tx.c:5595
 ieee80211_beacon_get include/net/mac80211.h:5443 [inline]
 mac80211_hwsim_beacon_tx+0x3bd/0x770 drivers/net/wireless/virtual/mac80211_hwsim.c:2271
 __iterate_interfaces+0x225/0x4c0 net/mac80211/util.c:766
 ieee80211_iterate_active_interfaces_atomic+0xdb/0x180 net/mac80211/util.c:802
 mac80211_hwsim_beacon+0xbb/0x1b0 drivers/net/wireless/virtual/mac80211_hwsim.c:2301
 __run_hrtimer kernel/time/hrtimer.c:1754 [inline]
 __hrtimer_run_queues+0x525/0xc10 kernel/time/hrtimer.c:1818
 hrtimer_run_softirq+0x177/0x290 kernel/time/hrtimer.c:1835
 handle_softirqs+0x27d/0x820 kernel/softirq.c:578
 __do_softirq kernel/softirq.c:612 [inline]
 invoke_softirq kernel/softirq.c:452 [inline]
 __irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661
 irq_exit_rcu+0x9/0x20 kernel/softirq.c:673
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline]
 sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xc0/0x120 kernel/locking/spinlock.c:194
Code: c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f7 44 24 20 00 02 00 00 41 c6 04 07 f8 75 4b f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> ab 96 c0 f6 65 8b 05 1c 54 67 75 85 c0 74 3c 48 c7 04 24 0e 36
RSP: 0018:ffffc90001397a00 EFLAGS: 00000206
RAX: dffffc0000000004 RBX: 0000000000000a02 RCX: 019bde0f82455500
RDX: dffffc0000000000 RSI: ffffffff8acacce0 RDI: 0000000000000001
RBP: ffffc90001397a98 R08: ffffffff911f0627 R09: 1ffffffff223e0c4
R10: dffffc0000000000 R11: fffffbfff223e0c5 R12: dffffc0000000000
R13: ffff88802c073e18 R14: ffff88802c073e38 R15: 1ffff92000272f40
 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
 snd_rawmidi_transmit+0x9c/0xc0 sound/core/rawmidi.c:1550
 snd_vmidi_output_work+0x1a6/0x3e0 sound/core/seq/seq_virmidi.c:151
 process_one_work kernel/workqueue.c:2657 [inline]
 process_scheduled_works+0xa60/0x1600 kernel/workqueue.c:2734
 worker_thread+0xa5e/0xfe0 kernel/workqueue.c:2815
 kthread+0x2fa/0x390 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
 </TASK>
----------------
Code disassembly (best guess):
   0:	c7 44 24 20 00 00 00 	movl   $0x0,0x20(%rsp)
   7:	00
   8:	9c                   	pushf
   9:	8f 44 24 20          	pop    0x20(%rsp)
   d:	f7 44 24 20 00 02 00 	testl  $0x200,0x20(%rsp)
  14:	00
  15:	41 c6 04 07 f8       	movb   $0xf8,(%r15,%rax,1)
  1a:	75 4b                	jne    0x67
  1c:	f7 c3 00 02 00 00    	test   $0x200,%ebx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
* 2a:	e8 ab 96 c0 f6       	call   0xf6c096da <-- trapping instruction
  2f:	65 8b 05 1c 54 67 75 	mov    %gs:0x7567541c(%rip),%eax        # 0x75675452
  36:	85 c0                	test   %eax,%eax
  38:	74 3c                	je     0x76
  3a:	48                   	rex.W
  3b:	c7                   	.byte 0xc7
  3c:	04 24                	add    $0x24,%al
  3e:	0e                   	(bad)
  3f:	36                   	ss