------------[ cut here ]------------
WARNING: CPU: 1 PID: 14004 at net/mac80211/tx.c:5048 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5048 [inline]
WARNING: CPU: 1 PID: 14004 at net/mac80211/tx.c:5048 __ieee80211_beacon_get+0x1141/0x1520 net/mac80211/tx.c:5459
Modules linked in:
CPU: 1 PID: 14004 Comm: syz.8.1744 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:5048 [inline]
RIP: 0010:__ieee80211_beacon_get+0x1141/0x1520 net/mac80211/tx.c:5459
Code: f7 4c 89 ef e8 90 69 ba f7 45 31 ed 4c 8b bc 24 a0 00 00 00 e9 7f fe ff ff e8 eb 82 7c f7 0f 0b e9 61 f8 ff ff e8 df 82 7c f7 <0f> 0b e9 85 fb ff ff e8 d3 82 7c f7 48 c7 c7 40 bf 65 8e 4c 89 e6
RSP: 0018:ffffc900001f0a18 EFLAGS: 00010246
RAX: ffffffff8a0aec41 RBX: dffffc0000000000 RCX: ffff88802b909e00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff88802b909e00 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff888064b92440
R13: ffff888021b00c24 R14: ffff888064b92930 R15: ffff888021b00c00
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb43e7eb700 CR3: 000000005b22d000 CR4: 00000000003506e0
Call Trace:
 <IRQ>
 ieee80211_beacon_get_tim+0xbf/0x580 net/mac80211/tx.c:5586
 ieee80211_beacon_get include/net/mac80211.h:5440 [inline]
 mac80211_hwsim_beacon_tx+0x3bd/0x770 drivers/net/wireless/virtual/mac80211_hwsim.c:2265
 __iterate_interfaces+0x225/0x4c0 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:1754 [inline]
 __hrtimer_run_queues+0x525/0xc10 kernel/time/hrtimer.c:1818
 hrtimer_run_softirq+0x177/0x290 kernel/time/hrtimer.c:1835
 handle_softirqs+0x27d/0x820 kernel/softirq.c:578
 __do_softirq kernel/softirq.c:612 [inline]
 invoke_softirq kernel/softirq.c:452 [inline]
 __irq_exit_rcu+0xd3/0x190 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:check_preemption_disabled+0x18/0x110 lib/smp_processor_id.c:14
Code: 40 06 1d 8b eb 0c 66 2e 0f 1f 84 00 00 00 00 00 66 90 55 41 57 41 56 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00 48 89 44 24 08 <65> 8b 05 9d dd 76 75 65 8b 0d 92 dd 76 75 f7 c1 ff ff ff 7f 74 1f
RSP: 0018:ffffc9000b4372a8 EFLAGS: 00000282
RAX: 8bcdbe281c610d00 RBX: 0000000000000001 RCX: ffffffff81690896
RDX: 0000000000000000 RSI: ffffffff8b1d0640 RDI: ffffffff8b1d0600
RBP: ffffc9000b437418 R08: ffffffff8e8c7caf R09: 1ffffffff1d18f95
R10: dffffc0000000000 R11: fffffbfff1d18f96 R12: ffffffff81eafe7d
R13: dffffc0000000000 R14: 0000000000000001 R15: 1ffff92001686e6c
 rcu_dynticks_curr_cpu_in_eqs include/linux/context_tracking.h:122 [inline]
 rcu_is_watching+0x15/0xb0 kernel/rcu/tree.c:700
 trace_lock_release include/trace/events/lock.h:69 [inline]
 lock_release+0xb5/0x8c0 kernel/locking/lockdep.c:5765
 rcu_lock_release include/linux/rcupdate.h:344 [inline]
 rcu_read_unlock_sched include/linux/rcupdate.h:899 [inline]
 pfn_valid+0x3c5/0x420 include/linux/mmzone.h:2021
 page_table_check_clear+0x1e/0x6a0 mm/page_table_check.c:70
 ptep_get_and_clear_full arch/x86/include/asm/jump_label.h:-1 [inline]
 zap_pte_range mm/memory.c:1429 [inline]
 zap_pmd_range mm/memory.c:1571 [inline]
 zap_pud_range mm/memory.c:1600 [inline]
 zap_p4d_range mm/memory.c:1621 [inline]
 unmap_page_range+0x1c35/0x32f0 mm/memory.c:1642
 unmap_vmas+0x286/0x3f0 mm/memory.c:1732
 exit_mmap+0x238/0xb90 mm/mmap.c:3302
 __mmput+0x118/0x3a0 kernel/fork.c:1362
 exit_mm+0x23f/0x340 kernel/exit.c:576
 do_exit+0x909/0x2530 kernel/exit.c:877
 do_group_exit+0x22d/0x2f0 kernel/exit.c:1032
 get_signal+0x12a6/0x1390 kernel/signal.c:2911
 arch_do_signal_or_restart+0xc2/0x7b0 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop+0x70/0x110 kernel/entry/common.c:174
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
 syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:302
 do_syscall_64+0x61/0xb0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fb43e79e019
Code: Unable to access opcode bytes at 0x7fb43e79dfef.
RSP: 002b:00007fb43f5c3028 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: 0000200000000000 RBX: 00007fb43ea26090 RCX: 00007fb43e79e019
RDX: b635773f06ebbeee RSI: 0000000000b36000 RDI: 0000200000000000
RBP: 00007fb43e83500c R08: ffffffffffffffff R09: 0000000000000000
R10: 0000000000008031 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb43ea26128 R14: 00007fb43ea26090 R15: 00007ffd4bf3c0a8
 </TASK>
----------------
Code disassembly (best guess):
   0:	40 06                	rex (bad)
   2:	1d 8b eb 0c 66       	sbb    $0x660ceb8b,%eax
   7:	2e 0f 1f 84 00 00 00 	cs nopl 0x0(%rax,%rax,1)
   e:	00 00
  10:	66 90                	xchg   %ax,%ax
  12:	55                   	push   %rbp
  13:	41 57                	push   %r15
  15:	41 56                	push   %r14
  17:	53                   	push   %rbx
  18:	48 83 ec 10          	sub    $0x10,%rsp
  1c:	65 48 8b 04 25 28 00 	mov    %gs:0x28,%rax
  23:	00 00
  25:	48 89 44 24 08       	mov    %rax,0x8(%rsp)
* 2a:	65 8b 05 9d dd 76 75 	mov    %gs:0x7576dd9d(%rip),%eax        # 0x7576ddce <-- trapping instruction
  31:	65 8b 0d 92 dd 76 75 	mov    %gs:0x7576dd92(%rip),%ecx        # 0x7576ddca
  38:	f7 c1 ff ff ff 7f    	test   $0x7fffffff,%ecx
  3e:	74 1f                	je     0x5f