------------[ cut here ]------------
WARNING: CPU: 1 PID: 10870 at net/mac80211/tx.c:4944 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4944 [inline]
WARNING: CPU: 1 PID: 10870 at net/mac80211/tx.c:4944 __ieee80211_beacon_get+0x1952/0x1f50 net/mac80211/tx.c:5265
Modules linked in:
CPU: 1 PID: 10870 Comm: syz.3.1420 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4944 [inline]
RIP: 0010:__ieee80211_beacon_get+0x1952/0x1f50 net/mac80211/tx.c:5265
Code: ff ff ff e8 40 d3 e3 f7 0f 0b 48 8b 7c 24 20 e8 04 90 7f fe e9 dd e9 ff ff e8 2a d3 e3 f7 0f 0b e9 f1 ee ff ff e8 1e d3 e3 f7 <0f> 0b e9 61 f2 ff ff e8 12 d3 e3 f7 48 c7 c7 f0 73 fa 8d 4c 89 f6
RSP: 0018:ffffc900001e08a0 EFLAGS: 00010246
RAX: ffffffff899d0342 RBX: 0000000000000000 RCX: ffff88802f663b80
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900001e0aa8 R08: ffff88802f663b80 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: 1ffff9200003c12c
R13: dffffc0000000000 R14: ffff88807b5ea258 R15: ffff88802dcb9200
FS:  00007f4a71e506c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4a71e4ff98 CR3: 000000002d58e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 ieee80211_beacon_get_tim+0x5b/0x4d0 net/mac80211/tx.c:5352
 ieee80211_beacon_get include/net/mac80211.h:5264 [inline]
 mac80211_hwsim_beacon_tx+0x21c/0xae0 drivers/net/wireless/mac80211_hwsim.c:2091
 __iterate_interfaces+0x243/0x500 net/mac80211/util.c:788
 ieee80211_iterate_active_interfaces_atomic+0xd7/0x170 net/mac80211/util.c:824
 mac80211_hwsim_beacon+0xb7/0x1b0 drivers/net/wireless/mac80211_hwsim.c:2147
 __run_hrtimer kernel/time/hrtimer.c:1747 [inline]
 __hrtimer_run_queues+0x554/0xd60 kernel/time/hrtimer.c:1811
 hrtimer_run_softirq+0x183/0x2a0 kernel/time/hrtimer.c:1828
 handle_softirqs+0x2a1/0x920 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x12f/0x220 kernel/softirq.c:679
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:__copy_msghdr net/socket.c:2411 [inline]
RIP: 0010:copy_msghdr_from_user net/socket.c:2452 [inline]
RIP: 0010:recvmsg_copy_msghdr net/socket.c:2704 [inline]
RIP: 0010:___sys_recvmsg+0x2f2/0x510 net/socket.c:2776
Code: 30 48 85 c0 74 04 8b 5c 24 68 48 89 d0 48 c1 e8 03 48 89 44 24 10 42 0f b6 04 28 84 c0 48 89 54 24 08 0f 85 87 01 00 00 89 1a <31> ff 89 de e8 75 a4 66 f9 85 db 78 38 bf 80 00 00 00 89 de e8 65
RSP: 0018:ffffc90006317a80 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff88802f663b80
RDX: ffffc90006317d28 RSI: 0000000000000000 RDI: ffffc90006317d64
RBP: ffffc90006317c70 R08: 0000000000000000 R09: fffff52000c62f63
R10: fffff52000c62f63 R11: 1ffff92000c62f5c R12: ffffc90006317d20
R13: dffffc0000000000 R14: 0000000000000002 R15: 1ffff92000c62f58
 do_recvmmsg+0x359/0x7d0 net/socket.c:2874
 __sys_recvmmsg net/socket.c:2953 [inline]
 __do_sys_recvmmsg net/socket.c:2976 [inline]
 __se_sys_recvmmsg net/socket.c:2969 [inline]
 __x64_sys_recvmmsg+0x18d/0x240 net/socket.c:2969
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f4a70f8f6c9
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:00007f4a71e50038 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007f4a711e6270 RCX: 00007f4a70f8f6c9
RDX: 0000000000010106 RSI: 00002000000000c0 RDI: 0000000000000003
RBP: 00007f4a71011f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4a711e6308 R14: 00007f4a711e6270 R15: 00007ffcade9af68
 </TASK>
----------------
Code disassembly (best guess):
   0:	30 48 85             	xor    %cl,-0x7b(%rax)
   3:	c0 74 04 8b 5c       	shlb   $0x5c,-0x75(%rsp,%rax,1)
   8:	24 68                	and    $0x68,%al
   a:	48 89 d0             	mov    %rdx,%rax
   d:	48 c1 e8 03          	shr    $0x3,%rax
  11:	48 89 44 24 10       	mov    %rax,0x10(%rsp)
  16:	42 0f b6 04 28       	movzbl (%rax,%r13,1),%eax
  1b:	84 c0                	test   %al,%al
  1d:	48 89 54 24 08       	mov    %rdx,0x8(%rsp)
  22:	0f 85 87 01 00 00    	jne    0x1af
  28:	89 1a                	mov    %ebx,(%rdx)
* 2a:	31 ff                	xor    %edi,%edi <-- trapping instruction
  2c:	89 de                	mov    %ebx,%esi
  2e:	e8 75 a4 66 f9       	call   0xf966a4a8
  33:	85 db                	test   %ebx,%ebx
  35:	78 38                	js     0x6f
  37:	bf 80 00 00 00       	mov    $0x80,%edi
  3c:	89 de                	mov    %ebx,%esi
  3e:	e8                   	.byte 0xe8
  3f:	65                   	gs