------------[ cut here ]------------
WARNING: CPU: 1 PID: 16097 at net/mac80211/tx.c:4944 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4944 [inline]
WARNING: CPU: 1 PID: 16097 at net/mac80211/tx.c:4944 __ieee80211_beacon_get+0x1233/0x1600 net/mac80211/tx.c:5345
Modules linked in:
CPU: 1 PID: 16097 Comm: syz.0.3106 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4944 [inline]
RIP: 0010:__ieee80211_beacon_get+0x1233/0x1600 net/mac80211/tx.c:5345
Code: 24 4c 89 e7 e8 8e f7 09 f8 45 31 f6 4c 8b bc 24 a0 00 00 00 e9 7a fe ff ff e8 89 57 d1 f7 0f 0b e9 f6 f7 ff ff e8 7d 57 d1 f7 <0f> 0b e9 48 fb ff ff e8 71 57 d1 f7 48 c7 c7 90 ef fa 8d 4c 89 e6
RSP: 0000:ffffc900001e0a30 EFLAGS: 00010246
RAX: ffffffff89b11dd3 RBX: ffffffff89b10bd6 RCX: ffff88802e2c8000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff88802e2c8000 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff888024336228
R13: dffffc0000000000 R14: ffff888024336760 R15: ffff888078752424
FS:  00007f4ecc58d6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4ec42bc000 CR3: 000000005f6f2000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 ieee80211_beacon_get_tim+0x63/0x4e0 net/mac80211/tx.c:5472
 ieee80211_beacon_get include/net/mac80211.h:5335 [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+0x54a/0xd50 kernel/time/hrtimer.c:1811
 hrtimer_run_softirq+0x183/0x2a0 kernel/time/hrtimer.c:1828
 handle_softirqs+0x2a1/0x930 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x13b/0x230 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:preempt_count arch/x86/include/asm/preempt.h:27 [inline]
RIP: 0010:preempt_count_sub+0x33/0x160 kernel/sched/core.c:5738
Code: fc ff df 48 c7 c0 40 01 c0 96 48 c1 e8 03 0f b6 04 18 84 c0 0f 85 bd 00 00 00 83 3d 26 15 67 15 00 75 25 65 8b 05 25 83 a9 7e <89> c1 81 e1 ff ff ff 7f 39 cf 7f 25 81 ff ff 00 00 00 0f 93 c1 84
vkms_vblank_simulate: vblank timer overrun
RSP: 0000:ffffc900034df960 EFLAGS: 00000246
RAX: 0000000080000001 RBX: dffffc0000000000 RCX: ffffffff96c00103
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
RBP: ffffea0001c2ee80 R08: ffff8880b8f41343 R09: 1ffff110171e8268
R10: dffffc0000000000 R11: ffffed10171e8269 R12: 0000000000140dca
R13: 0000000000000000 R14: ffff8880b8f41340 R15: ffffc900034dfb48
 rmqueue_pcplist mm/page_alloc.c:3857 [inline]
 rmqueue mm/page_alloc.c:3899 [inline]
 get_page_from_freelist+0x7dd/0x1ab0 mm/page_alloc.c:4354
 __alloc_pages+0x1ec/0x4f0 mm/page_alloc.c:5657
 __folio_alloc+0xe/0x30 mm/page_alloc.c:5689
 vma_alloc_folio+0x4a3/0x900 mm/mempolicy.c:2243
 alloc_page_vma include/linux/gfp.h:284 [inline]
 do_anonymous_page mm/memory.c:4189 [inline]
 handle_pte_fault mm/memory.c:5027 [inline]
 __handle_mm_fault mm/memory.c:5171 [inline]
 handle_mm_fault+0x22b1/0x3ee0 mm/memory.c:5292
 do_user_addr_fault+0x51f/0xb10 arch/x86/mm/fault.c:1338
 handle_page_fault arch/x86/mm/fault.c:1429 [inline]
 exc_page_fault+0x60/0x100 arch/x86/mm/fault.c:1482
 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:608
RIP: 0033:0x7f4ecee53b98
Code: 85 ed 74 3b 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 39 f0 72 1b 4d 8b 07 49 89 c1 49 29 f1 47 0f b6 0c 08 45 84 c9 74 08 <45> 88 0c 00 49 8b 47 10 48 83 c0 01 49 89 47 10 83 e9 01 73 d3 41
RSP: 002b:00007f4ecc58c470 EFLAGS: 00010282
RAX: 000000000014f000 RBX: 00007f4ecc58c530 RCX: 0000000000000016
RDX: 00000000000000ff RSI: 0000000000000200 RDI: 00007f4ecc58c5d0
RBP: 00000000000000e8 R08: 00007f4ec416d000 R09: 00000000000000fe
R10: 000020000001c602 R11: 000000000000975a R12: 0000000000000181
R13: 00007f4ecf052600 R14: 0000000000000011 R15: 00007f4ecc58c5d0
 </TASK>
----------------
Code disassembly (best guess):
   0:	fc                   	cld
   1:	ff                   	lcall  (bad)
   2:	df 48 c7             	fisttps -0x39(%rax)
   5:	c0 40 01 c0          	rolb   $0xc0,0x1(%rax)
   9:	96                   	xchg   %eax,%esi
   a:	48 c1 e8 03          	shr    $0x3,%rax
   e:	0f b6 04 18          	movzbl (%rax,%rbx,1),%eax
  12:	84 c0                	test   %al,%al
  14:	0f 85 bd 00 00 00    	jne    0xd7
  1a:	83 3d 26 15 67 15 00 	cmpl   $0x0,0x15671526(%rip)        # 0x15671547
  21:	75 25                	jne    0x48
  23:	65 8b 05 25 83 a9 7e 	mov    %gs:0x7ea98325(%rip),%eax        # 0x7ea9834f
* 2a:	89 c1                	mov    %eax,%ecx <-- trapping instruction
  2c:	81 e1 ff ff ff 7f    	and    $0x7fffffff,%ecx
  32:	39 cf                	cmp    %ecx,%edi
  34:	7f 25                	jg     0x5b
  36:	81 ff ff 00 00 00    	cmp    $0xff,%edi
  3c:	0f 93 c1             	setae  %cl
  3f:	84                   	.byte 0x84