------------[ cut here ]------------
WARNING: CPU: 1 PID: 6243 at net/mac80211/tx.c:4876 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4876 [inline]
WARNING: CPU: 1 PID: 6243 at net/mac80211/tx.c:4876 __ieee80211_beacon_get+0x178a/0x1ff0 net/mac80211/tx.c:5100
Modules linked in:
CPU: 1 PID: 6243 Comm: syz.6.502 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4876 [inline]
RIP: 0010:__ieee80211_beacon_get+0x178a/0x1ff0 net/mac80211/tx.c:5100
Code: 26 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 82 68 26 f8 0f 0b e9 16 ef ff ff e8 76 68 26 f8 <0f> 0b e9 7c f2 ff ff e8 3a 80 6d 00 89 d9 80 e1 07 80 c1 03 38 c1
RSP: 0018:ffffc90000dd08c0 EFLAGS: 00010246
RAX: ffffffff8952943a RBX: ffff8881435e0600 RCX: ffff888024f8bb80
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000dd0af8 R08: ffff888024f8bb80 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: f8f8f8f8f8f8f8f8
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff920001ba128
FS:  00007fad686ce6c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fad686cdff8 CR3: 000000007523d000 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:5219
 ieee80211_beacon_get include/net/mac80211.h:4983 [inline]
 mac80211_hwsim_beacon_tx+0x104/0x900 drivers/net/wireless/mac80211_hwsim.c:1812
 __iterate_interfaces+0x225/0x4c0 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+0x4ea/0xb60 kernel/time/hrtimer.c:1749
 hrtimer_run_softirq+0x176/0x240 kernel/time/hrtimer.c:1766
 handle_softirqs+0x336/0x830 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:arch_static_branch arch/x86/include/asm/jump_label.h:27 [inline]
RIP: 0010:static_key_false include/linux/jump_label.h:212 [inline]
RIP: 0010:native_write_msr arch/x86/include/asm/msr.h:156 [inline]
RIP: 0010:wrmsrl arch/x86/include/asm/msr.h:271 [inline]
RIP: 0010:native_x2apic_icr_write arch/x86/include/asm/apic.h:241 [inline]
RIP: 0010:__x2apic_send_IPI_dest arch/x86/kernel/apic/x2apic_phys.c:126 [inline]
RIP: 0010:x2apic_send_IPI+0x70/0xc0 arch/x86/kernel/apic/x2apic_phys.c:48
Code: f0 48 c1 e8 03 42 0f b6 04 20 84 c0 75 37 41 0f b7 16 0f ae f0 0f ae e8 83 fb 02 b8 00 04 00 00 0f 45 c3 b9 30 08 00 00 0f 30 <66> 90 5b 41 5c 41 5e 41 5f c3 48 c7 c7 a0 ee 18 8c 4c 89 f6 e8 57
RSP: 0018:ffffc9000300f938 EFLAGS: 00000206
RAX: 00000000000000fb RBX: 00000000000000fb RCX: 0000000000000830
RDX: 0000000000000000 RSI: 00000000000000fb RDI: 0000000000000000
RBP: ffffc9000300fa38 R08: ffff8880b903b407 R09: 1ffff11017207680
R10: dffffc0000000000 R11: ffffed1017207681 R12: dffffc0000000000
R13: 1ffff92000601f30 R14: ffff8880b9021568 R15: ffffffff8be3d820
 __smp_call_single_queue kernel/smp.c:496 [inline]
 generic_exec_single+0x26b/0x470 kernel/smp.c:529
 smp_call_function_single_async+0x71/0x100 kernel/smp.c:803
 rdmsr_safe_on_cpu+0x14d/0x290 arch/x86/lib/msr-smp.c:181
 msr_read+0x108/0x1b0 arch/x86/kernel/msr.c:67
 vfs_read+0x2ff/0xd50 fs/read_write.c:483
 ksys_read+0x153/0x260 fs/read_write.c:623
 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: 0033:0x7fad6a4760d9
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:00007fad686ce028 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007fad6a6fdfa0 RCX: 00007fad6a4760d9
RDX: 0000000000018ff8 RSI: 0000200000019680 RDI: 0000000000000003
RBP: 00007fad6a50d024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fad6a6fe038 R14: 00007fad6a6fdfa0 R15: 00007ffdf8fbe1c8
 </TASK>
----------------
Code disassembly (best guess):
   0:	f0 48 c1 e8 03       	lock shr $0x3,%rax
   5:	42 0f b6 04 20       	movzbl (%rax,%r12,1),%eax
   a:	84 c0                	test   %al,%al
   c:	75 37                	jne    0x45
   e:	41 0f b7 16          	movzwl (%r14),%edx
  12:	0f ae f0             	mfence
  15:	0f ae e8             	lfence
  18:	83 fb 02             	cmp    $0x2,%ebx
  1b:	b8 00 04 00 00       	mov    $0x400,%eax
  20:	0f 45 c3             	cmovne %ebx,%eax
  23:	b9 30 08 00 00       	mov    $0x830,%ecx
  28:	0f 30                	wrmsr
* 2a:	66 90                	xchg   %ax,%ax <-- trapping instruction
  2c:	5b                   	pop    %rbx
  2d:	41 5c                	pop    %r12
  2f:	41 5e                	pop    %r14
  31:	41 5f                	pop    %r15
  33:	c3                   	ret
  34:	48 c7 c7 a0 ee 18 8c 	mov    $0xffffffff8c18eea0,%rdi
  3b:	4c 89 f6             	mov    %r14,%rsi
  3e:	e8                   	.byte 0xe8
  3f:	57                   	push   %rdi