------------[ cut here ]------------
WARNING: CPU: 1 PID: 7421 at net/mac80211/tx.c:4859 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4859 [inline]
WARNING: CPU: 1 PID: 7421 at net/mac80211/tx.c:4859 __ieee80211_beacon_get+0x172c/0x1f80 net/mac80211/tx.c:5083
Modules linked in:
CPU: 1 PID: 7421 Comm: sed Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4859 [inline]
RIP: 0010:__ieee80211_beacon_get+0x172c/0x1f80 net/mac80211/tx.c:5083
Code: f8 0f 0b e9 f1 fa ff ff e8 81 83 3a f8 0f 0b 4c 8b 74 24 08 e9 36 fe ff ff e8 70 83 3a f8 0f 0b e9 3c ef ff ff e8 64 83 3a f8 <0f> 0b e9 b8 f2 ff ff e8 88 e7 6b 00 44 89 e1 80 e1 07 80 c1 03 38
RSP: 0000:ffffc90000dd08c0 EFLAGS: 00010246
RAX: ffffffff893d46ec RBX: ffff8880605c8c80 RCX: ffff888027b58000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000dd0ae8 R08: ffff888027b58000 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff888076535c00
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff920001ba128
FS:  00007f671826fc80(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f67184138f0 CR3: 000000006471f000 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:5202
 ieee80211_beacon_get include/net/mac80211.h:4983 [inline]
 mac80211_hwsim_beacon_tx+0xf4/0x920 drivers/net/wireless/mac80211_hwsim.c:1812
 __iterate_interfaces+0x243/0x500 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+0x53d/0xc40 kernel/time/hrtimer.c:1749
 hrtimer_run_softirq+0x176/0x240 kernel/time/hrtimer.c:1766
 handle_softirqs+0x328/0x820 kernel/softirq.c:576
 __do_softirq kernel/softirq.c:610 [inline]
 invoke_softirq kernel/softirq.c:450 [inline]
 __irq_exit_rcu+0x12f/0x220 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:__kasan_check_write+0x6/0x10 mm/kasan/shadow.c:37
Code: f6 a4 a2 8b 48 89 de e8 18 7b e2 07 31 ed eb d7 00 00 cc cc 89 f6 48 8b 0c 24 31 d2 e9 43 ef ff ff 0f 1f 00 89 f6 48 8b 0c 24 <ba> 01 00 00 00 e9 30 ef ff ff 55 41 56 53 48 89 d3 89 f5 49 89 fe
RSP: 0000:ffffc90002f5fa98 EFLAGS: 00000293
RAX: ffffffff81b015f0 RBX: ffffea000027b600 RCX: ffffffff81b01b01
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffea000027b630
RBP: dffffc0000000000 R08: dffffc0000000000 R09: fffff9400004f6c1
R10: fffff9400004f6c1 R11: 1ffffd400004f6c0 R12: ffffc90002f5fd80
R13: 0000000009ed8025 R14: 0000000000000000 R15: dffffc0000000000
 instrument_atomic_read_write include/linux/instrumented.h:101 [inline]
 atomic_inc_and_test include/linux/atomic/atomic-instrumented.h:549 [inline]
 page_add_file_rmap+0x711/0x940 mm/rmap.c:1245
 do_set_pte+0x3c9/0x530 mm/memory.c:4069
 filemap_map_pages+0xe7e/0x1390 mm/filemap.c:3344
 do_fault_around mm/memory.c:4243 [inline]
 do_read_fault mm/memory.c:4258 [inline]
 do_fault mm/memory.c:4392 [inline]
 handle_pte_fault mm/memory.c:4650 [inline]
 __handle_mm_fault mm/memory.c:4785 [inline]
 handle_mm_fault+0x2580/0x43c0 mm/memory.c:4883
 do_user_addr_fault+0x489/0xc80 arch/x86/mm/fault.c:1357
 handle_page_fault arch/x86/mm/fault.c:1445 [inline]
 exc_page_fault+0x60/0x100 arch/x86/mm/fault.c:1501
 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:606
RIP: 0033:0x7f67184138f0
Code: c1 e0 05 49 03 80 a0 00 00 00 39 70 04 b8 ff ff ff ff 0f 45 f8 89 f8 c3 66 90 8d 78 01 eb d4 bf ff ff ff ff eb ef 0f 1f 40 00 <41> 54 55 89 f5 53 83 7f 68 01 48 89 fb 7e 43 48 63 f6 48 81 fe ff
RSP: 002b:00007ffd119632d8 EFLAGS: 00010206
RAX: 0000000000000000 RBX: 00005622c8a0db20 RCX: 0000000000000000
RDX: 00007ffd11963348 RSI: 0000000000000009 RDI: 00007ffd11963340
RBP: 00007ffd11963340 R08: 0000000000000001 R09: 0000000000000110
R10: 0000000000000000 R11: 0000000000000008 R12: 0000000000000000
R13: 0000000000000008 R14: 00005622c8a0d9c0 R15: 0000000000000008
 </TASK>
----------------
Code disassembly (best guess):
   0:	f6 a4 a2 8b 48 89 de 	mulb   -0x2176b775(%rdx,%riz,4)
   7:	e8 18 7b e2 07       	call   0x7e27b24
   c:	31 ed                	xor    %ebp,%ebp
   e:	eb d7                	jmp    0xffffffe7
  10:	00 00                	add    %al,(%rax)
  12:	cc                   	int3
  13:	cc                   	int3
  14:	89 f6                	mov    %esi,%esi
  16:	48 8b 0c 24          	mov    (%rsp),%rcx
  1a:	31 d2                	xor    %edx,%edx
  1c:	e9 43 ef ff ff       	jmp    0xffffef64
  21:	0f 1f 00             	nopl   (%rax)
  24:	89 f6                	mov    %esi,%esi
  26:	48 8b 0c 24          	mov    (%rsp),%rcx
* 2a:	ba 01 00 00 00       	mov    $0x1,%edx <-- trapping instruction
  2f:	e9 30 ef ff ff       	jmp    0xffffef64
  34:	55                   	push   %rbp
  35:	41 56                	push   %r14
  37:	53                   	push   %rbx
  38:	48 89 d3             	mov    %rdx,%rbx
  3b:	89 f5                	mov    %esi,%ebp
  3d:	49 89 fe             	mov    %rdi,%r14