------------[ cut here ]------------
WARNING: CPU: 1 PID: 10426 at net/mac80211/tx.c:5031 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5031 [inline]
WARNING: CPU: 1 PID: 10426 at net/mac80211/tx.c:5031 __ieee80211_beacon_get+0x1233/0x1600 net/mac80211/tx.c:5442
Modules linked in:
CPU: 1 PID: 10426 Comm: syz.2.847 Not tainted 6.6.102-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5031 [inline]
RIP: 0010:__ieee80211_beacon_get+0x1233/0x1600 net/mac80211/tx.c:5442
Code: 24 4c 89 e7 e8 fe 37 d5 f7 45 31 f6 4c 8b bc 24 a0 00 00 00 e9 7a fe ff ff e8 89 12 98 f7 0f 0b e9 f6 f7 ff ff e8 7d 12 98 f7 <0f> 0b e9 48 fb ff ff e8 71 12 98 f7 48 c7 c7 c0 00 24 8e 4c 89 e6
RSP: 0018:ffffc900001f0a18 EFLAGS: 00010246
RAX: ffffffff89ed78a3 RBX: ffffffff89ed66a6 RCX: ffff888020cc9e00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff888020cc9e00 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff88805a94e3c0
R13: dffffc0000000000 R14: ffff88805a94e8b0 R15: ffff88805f8f9424
FS:  00007f593163e6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c27916f CR3: 000000007d182000 CR4: 00000000003506e0
Call Trace:
 <IRQ>
 ieee80211_beacon_get_tim+0xb8/0x560 net/mac80211/tx.c:5569
 ieee80211_beacon_get include/net/mac80211.h:5438 [inline]
 mac80211_hwsim_beacon_tx+0x3c7/0x780 drivers/net/wireless/virtual/mac80211_hwsim.c:2265
 __iterate_interfaces+0x243/0x500 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:2295
 __run_hrtimer kernel/time/hrtimer.c:1755 [inline]
 __hrtimer_run_queues+0x51e/0xc40 kernel/time/hrtimer.c:1819
 hrtimer_run_softirq+0x187/0x2b0 kernel/time/hrtimer.c:1836
 handle_softirqs+0x280/0x820 kernel/softirq.c:578
 __do_softirq kernel/softirq.c:612 [inline]
 invoke_softirq kernel/softirq.c:452 [inline]
 __irq_exit_rcu+0xc7/0x190 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:ip_check_mc_rcu+0x11a/0x670 net/ipv4/igmp.c:2736
Code: 20 4c 89 f0 48 c1 e8 03 80 3c 18 00 74 08 4c 89 f7 e8 ba d5 db f8 4d 8b 36 e8 92 51 6c 01 41 89 c4 31 ff 89 c6 e8 26 92 84 f8 <45> 85 e4 0f 84 bd 01 00 00 e8 48 7c 6d f8 41 89 c4 31 ff 89 c6 e8
RSP: 0018:ffffc9000b3ef420 EFLAGS: 00000297
RAX: ffffffff8900fcaa RBX: dffffc0000000000 RCX: 0000000000000002
RDX: ffff888020cc9e00 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000011 R08: ffffffff8e4a882f R09: 1ffffffff1c95105
R10: dffffc0000000000 R11: fffffbfff1c95106 R12: 0000000000000001
R13: 0000000000000000 R14: ffff88801b274400 R15: 00000000020000e0
 __mkroute_output net/ipv4/route.c:2566 [inline]
 ip_route_output_key_hash_rcu+0xdf0/0x2320 net/ipv4/route.c:2840
 ip_route_output_key_hash+0x20b/0x340 net/ipv4/route.c:2669
 __ip_route_output_key include/net/route.h:134 [inline]
 ip_route_output_flow+0x2a/0x150 net/ipv4/route.c:2897
 udp_sendmsg+0x15cf/0x2380 net/ipv4/udp.c:1236
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg net/socket.c:745 [inline]
 ____sys_sendmsg+0x5bf/0x950 net/socket.c:2595
 ___sys_sendmsg+0x220/0x290 net/socket.c:2649
 __sys_sendmmsg+0x275/0x4a0 net/socket.c:2735
 __do_sys_sendmmsg net/socket.c:2764 [inline]
 __se_sys_sendmmsg net/socket.c:2761 [inline]
 __x64_sys_sendmmsg+0xa0/0xb0 net/socket.c:2761
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f593078ebe9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f593163e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007f59309b6180 RCX: 00007f593078ebe9
RDX: 000000000800001d RSI: 0000200000007fc0 RDI: 0000000000000006
RBP: 00007f5930811e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f59309b6218 R14: 00007f59309b6180 R15: 00007ffff1500998
 </TASK>
----------------
Code disassembly (best guess):
   0:	20 4c 89 f0          	and    %cl,-0x10(%rcx,%rcx,4)
   4:	48 c1 e8 03          	shr    $0x3,%rax
   8:	80 3c 18 00          	cmpb   $0x0,(%rax,%rbx,1)
   c:	74 08                	je     0x16
   e:	4c 89 f7             	mov    %r14,%rdi
  11:	e8 ba d5 db f8       	call   0xf8dbd5d0
  16:	4d 8b 36             	mov    (%r14),%r14
  19:	e8 92 51 6c 01       	call   0x16c51b0
  1e:	41 89 c4             	mov    %eax,%r12d
  21:	31 ff                	xor    %edi,%edi
  23:	89 c6                	mov    %eax,%esi
  25:	e8 26 92 84 f8       	call   0xf8849250
* 2a:	45 85 e4             	test   %r12d,%r12d <-- trapping instruction
  2d:	0f 84 bd 01 00 00    	je     0x1f0
  33:	e8 48 7c 6d f8       	call   0xf86d7c80
  38:	41 89 c4             	mov    %eax,%r12d
  3b:	31 ff                	xor    %edi,%edi
  3d:	89 c6                	mov    %eax,%esi
  3f:	e8                   	.byte 0xe8