------------[ cut here ]------------
WARNING: CPU: 1 PID: 5520 at net/mac80211/tx.c:4944 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4944 [inline]
WARNING: CPU: 1 PID: 5520 at net/mac80211/tx.c:4944 __ieee80211_beacon_get+0x1952/0x1f50 net/mac80211/tx.c:5265
Modules linked in:
CPU: 1 PID: 5520 Comm: syz.4.245 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:4944 [inline]
RIP: 0010:__ieee80211_beacon_get+0x1952/0x1f50 net/mac80211/tx.c:5265
Code: ff ff ff e8 30 36 e4 f7 0f 0b 48 8b 7c 24 20 e8 d4 a4 7f fe e9 dd e9 ff ff e8 1a 36 e4 f7 0f 0b e9 f1 ee ff ff e8 0e 36 e4 f7 <0f> 0b e9 61 f2 ff ff e8 02 36 e4 f7 48 c7 c7 f0 7e fa 8d 4c 89 f6
RSP: 0018:ffffc900001e08a0 EFLAGS: 00010246
RAX: ffffffff899c9a82 RBX: 0000000000000000 RCX: ffff88801f69d940
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900001e0aa8 R08: ffff88801f69d940 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: 1ffff9200003c12c
R13: dffffc0000000000 R14: ffff88802700e258 R15: ffff88801d325e00
FS:  00007fc422eaa6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c35a109 CR3: 0000000024863000 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:1752 [inline]
 __hrtimer_run_queues+0x554/0xd60 kernel/time/hrtimer.c:1816
 hrtimer_run_softirq+0x183/0x2a0 kernel/time/hrtimer.c:1833
 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:check_region_inline mm/kasan/generic.c:169 [inline]
RIP: 0010:kasan_check_range+0xd/0x290 mm/kasan/generic.c:189
Code: c3 0f 0b b8 ea ff ff ff c3 0f 0b b8 ea ff ff ff c3 00 00 cc cc 00 00 cc cc 00 00 cc cc b0 01 48 85 f6 0f 84 a4 01 00 00 41 57 <41> 56 53 49 89 f8 49 01 f0 0f 82 57 02 00 00 49 89 f8 49 c1 e8 2f
RSP: 0018:ffffc9001d6077e0 EFLAGS: 00000202
RAX: ffffffff81ab1101 RBX: 0000000000000000 RCX: ffffffff81ab1127
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffea0001418680
RBP: ffffc9001d6079d0 R08: dffffc0000000000 R09: fffff940002830d1
R10: fffff940002830d1 R11: 1ffffd40002830d0 R12: dffffc0000000000
R13: ffffea0001418688 R14: ffffea0001418680 R15: 1ffffd40002830d1
 instrument_atomic_read include/linux/instrumented.h:72 [inline]
 _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
 folio_test_head include/linux/page-flags.h:788 [inline]
 folio_test_large include/linux/page-flags.h:809 [inline]
 folio_more_pages+0x77/0x3e0 mm/filemap.c:2213
 filemap_map_pages+0xb42/0x10d0 mm/filemap.c:3492
 do_fault_around mm/memory.c:4600 [inline]
 do_read_fault mm/memory.c:4626 [inline]
 do_fault mm/memory.c:4760 [inline]
 handle_pte_fault mm/memory.c:5031 [inline]
 __handle_mm_fault mm/memory.c:5173 [inline]
 handle_mm_fault+0x2889/0x3e70 mm/memory.c:5294
 faultin_page mm/gup.c:1026 [inline]
 __get_user_pages+0x3ff/0xeb0 mm/gup.c:1250
 populate_vma_page_range+0x214/0x2b0 mm/gup.c:1607
 __mm_populate+0x248/0x370 mm/gup.c:1721
 mm_populate include/linux/mm.h:2837 [inline]
 vm_mmap_pgoff+0x203/0x2b0 mm/util.c:525
 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: 0033:0x7fc421f8eba9
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:00007fc422eaa038 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007fc4221d5fa0 RCX: 00007fc421f8eba9
RDX: b635773f06ebbeee RSI: 0000000000b36000 RDI: 0000200000000000
RBP: 00007fc422011e19 R08: ffffffffffffffff R09: 0000000000000000
R10: 0000000000008031 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc4221d6038 R14: 00007fc4221d5fa0 R15: 00007fff0aaadf58
 </TASK>
----------------
Code disassembly (best guess):
   0:	c3                   	ret
   1:	0f 0b                	ud2
   3:	b8 ea ff ff ff       	mov    $0xffffffea,%eax
   8:	c3                   	ret
   9:	0f 0b                	ud2
   b:	b8 ea ff ff ff       	mov    $0xffffffea,%eax
  10:	c3                   	ret
  11:	00 00                	add    %al,(%rax)
  13:	cc                   	int3
  14:	cc                   	int3
  15:	00 00                	add    %al,(%rax)
  17:	cc                   	int3
  18:	cc                   	int3
  19:	00 00                	add    %al,(%rax)
  1b:	cc                   	int3
  1c:	cc                   	int3
  1d:	b0 01                	mov    $0x1,%al
  1f:	48 85 f6             	test   %rsi,%rsi
  22:	0f 84 a4 01 00 00    	je     0x1cc
  28:	41 57                	push   %r15
* 2a:	41 56                	push   %r14 <-- trapping instruction
  2c:	53                   	push   %rbx
  2d:	49 89 f8             	mov    %rdi,%r8
  30:	49 01 f0             	add    %rsi,%r8
  33:	0f 82 57 02 00 00    	jb     0x290
  39:	49 89 f8             	mov    %rdi,%r8
  3c:	49 c1 e8 2f          	shr    $0x2f,%r8