------------[ cut here ]------------
WARNING: CPU: 1 PID: 10222 at net/mac80211/tx.c:4859 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4859 [inline]
WARNING: CPU: 1 PID: 10222 at net/mac80211/tx.c:4859 __ieee80211_beacon_get+0x179f/0x2000 net/mac80211/tx.c:5083
Modules linked in:
CPU: 1 PID: 10222 Comm: syz.6.1619 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4859 [inline]
RIP: 0010:__ieee80211_beacon_get+0x179f/0x2000 net/mac80211/tx.c:5083
Code: 2a f8 0f 0b 4f 89 64 2f 04 4f 89 64 2f 0c 43 c6 44 2f 14 f8 e9 19 fe ff ff e8 6d 09 2a f8 0f 0b e9 03 ef ff ff e8 61 09 2a f8 <0f> 0b e9 76 f2 ff ff e8 65 ae 6d 00 89 d9 80 e1 07 80 c1 03 38 c1
RSP: 0018:ffffc90000dd08e0 EFLAGS: 00010246
RAX: ffffffff894f2b2f RBX: ffff88807c23a268 RCX: ffff88804015d940
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000dd0b08 R08: ffff88804015d940 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff88805a6fc800
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff920001ba12c
FS:  00007f3afb80c6c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7fdeb4b6b0 CR3: 0000000050cf3000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 ieee80211_beacon_get_tim+0x48/0x840 net/mac80211/tx.c:5202
 ieee80211_beacon_get include/net/mac80211.h:4983 [inline]
 mac80211_hwsim_beacon_tx+0xf4/0x920 drivers/net/wireless/mac80211_hwsim.c:1812
 __iterate_interfaces+0x243/0x500 net/mac80211/util.c:793
 ieee80211_iterate_active_interfaces_atomic+0xb3/0x140 net/mac80211/util.c:829
 mac80211_hwsim_beacon+0x9b/0x180 drivers/net/wireless/mac80211_hwsim.c:1865
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x4f2/0xb70 kernel/time/hrtimer.c:1749
 hrtimer_run_softirq+0x176/0x240 kernel/time/hrtimer.c:1766
 handle_softirqs+0x339/0x830 kernel/softirq.c:576
 __do_softirq kernel/softirq.c:610 [inline]
 invoke_softirq kernel/softirq.c:450 [inline]
 __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:preempt_count_sub+0x48/0x160 kernel/sched/core.c:5541
Code: 85 bd 00 00 00 83 3d 26 4d db 14 00 75 25 65 8b 05 65 fd af 7e 89 c1 81 e1 ff ff ff 7f 39 cf 7f 25 81 ff ff 00 00 00 0f 93 c1 <84> c0 0f 95 c0 08 c8 74 53 65 8b 05 40 fd af 7e f7 df 65 01 3d 37
RSP: 0018:ffffc900048f75c8 EFLAGS: 00000293
RAX: 0000000080000001 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: ffffffff8a2b2800 RDI: 0000000000000001
RBP: ffffc900048f7678 R08: ffffffff901d5177 R09: 1ffffffff203aa2e
R10: dffffc0000000000 R11: fffffbfff203aa2f R12: dffffc0000000000
R13: 1ffff1100f056e44 R14: ffff8880782b71c8 R15: 1ffff9200091eebc
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline]
 _raw_spin_unlock_irqrestore+0xc1/0x120 kernel/locking/spinlock.c:194
 spin_unlock_irqrestore include/linux/spinlock.h:419 [inline]
 __skb_try_recv_datagram+0x179/0x4d0 net/core/datagram.c:267
 __unix_dgram_recvmsg+0x301/0xd90 net/unix/af_unix.c:2315
 ____sys_recvmsg+0x2cd/0x5e0 net/socket.c:-1
 ___sys_recvmsg+0x21a/0x5c0 net/socket.c:2706
 do_recvmmsg+0x382/0x850 net/socket.c:2800
 __sys_recvmmsg net/socket.c:2879 [inline]
 __do_sys_recvmmsg net/socket.c:2902 [inline]
 __se_sys_recvmmsg net/socket.c:2895 [inline]
 __x64_sys_recvmmsg+0x195/0x250 net/socket.c:2895
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f3afd5d3dd9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f3afb80c028 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007f3afd84d090 RCX: 00007f3afd5d3dd9
RDX: 0000000000010106 RSI: 00002000000000c0 RDI: 0000000000000003
RBP: 00007f3afd669d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3afd84d128 R14: 00007f3afd84d090 R15: 00007ffc79859d28
 </TASK>
----------------
Code disassembly (best guess):
   0:	85 bd 00 00 00 83    	test   %edi,-0x7d000000(%rbp)
   6:	3d 26 4d db 14       	cmp    $0x14db4d26,%eax
   b:	00 75 25             	add    %dh,0x25(%rbp)
   e:	65 8b 05 65 fd af 7e 	mov    %gs:0x7eaffd65(%rip),%eax        # 0x7eaffd7a
  15:	89 c1                	mov    %eax,%ecx
  17:	81 e1 ff ff ff 7f    	and    $0x7fffffff,%ecx
  1d:	39 cf                	cmp    %ecx,%edi
  1f:	7f 25                	jg     0x46
  21:	81 ff ff 00 00 00    	cmp    $0xff,%edi
  27:	0f 93 c1             	setae  %cl
* 2a:	84 c0                	test   %al,%al <-- trapping instruction
  2c:	0f 95 c0             	setne  %al
  2f:	08 c8                	or     %cl,%al
  31:	74 53                	je     0x86
  33:	65 8b 05 40 fd af 7e 	mov    %gs:0x7eaffd40(%rip),%eax        # 0x7eaffd7a
  3a:	f7 df                	neg    %edi
  3c:	65                   	gs
  3d:	01                   	.byte 0x1
  3e:	3d                   	.byte 0x3d
  3f:	37                   	(bad)