------------[ cut here ]------------
WARNING: CPU: 0 PID: 8687 at net/mac80211/tx.c:4934 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4934 [inline]
WARNING: CPU: 0 PID: 8687 at net/mac80211/tx.c:4934 __ieee80211_beacon_get+0x1952/0x1f50 net/mac80211/tx.c:5255
Modules linked in:
CPU: 0 PID: 8687 Comm: dhcpcd-run-hook Not tainted 6.1.147-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4934 [inline]
RIP: 0010:__ieee80211_beacon_get+0x1952/0x1f50 net/mac80211/tx.c:5255
Code: ff ff ff e8 20 59 e5 f7 0f 0b 48 8b 7c 24 20 e8 74 dd 7f fe e9 dd e9 ff ff e8 0a 59 e5 f7 0f 0b e9 f1 ee ff ff e8 fe 58 e5 f7 <0f> 0b e9 61 f2 ff ff e8 f2 58 e5 f7 48 c7 c7 b0 56 fa 8d 4c 89 f6
RSP: 0018:ffffc900000078a0 EFLAGS: 00010246
RAX: ffffffff899b6de2 RBX: 0000000000000000 RCX: ffff88802fbed940
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000007aa8 R08: ffff88802fbed940 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: 1ffff92000000f2c
R13: dffffc0000000000 R14: ffff88807cebe258 R15: ffff88807633b200
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb0338cc7d0 CR3: 000000000c88e000 CR4: 00000000003506f0
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:5342
 ieee80211_beacon_get include/net/mac80211.h:5262 [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:on_stack arch/x86/include/asm/stacktrace.h:58 [inline]
RIP: 0010:unwind_next_frame+0x17eb/0x20b0 arch/x86/kernel/unwind_orc.c:622
Code: 8d 73 10 4c 89 f0 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 f7 e8 16 77 98 00 49 8b 06 4d 39 fc 0f 96 c1 4c 39 f8 0f 97 c2 20 ca <80> fa 01 0f 85 82 00 00 00 49 8d 4f 08 4c 39 e1 76 79 48 39 c1 77
RSP: 0018:ffffc9000d8c7590 EFLAGS: 00000202
RAX: ffffc9000d8c8000 RBX: ffffc9000d8c7668 RCX: 0000000000000001
RDX: ffffc9000d8c7601 RSI: dffffc0000000000 RDI: ffffc9000d8c7670
RBP: ffffffff8ea83daa R08: ffffc9000d8c7c58 R09: ffffc9000d8c76b8
R10: fffff52001b18ed9 R11: 1ffff92001b18ed7 R12: ffffc9000d8c0000
R13: dffffc0000000000 R14: ffffc9000d8c7678 R15: ffffc9000d8c7c68
 arch_stack_walk+0x10c/0x140 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x98/0xe0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:52
 kasan_save_free_info+0x2d/0x50 mm/kasan/generic.c:516
 ____kasan_slab_free+0x126/0x1e0 mm/kasan/common.c:236
 kasan_slab_free include/linux/kasan.h:177 [inline]
 slab_free_hook mm/slub.c:1724 [inline]
 slab_free_freelist_hook+0x131/0x1a0 mm/slub.c:1750
 slab_free mm/slub.c:3661 [inline]
 kmem_cache_free+0xf7/0x290 mm/slub.c:3683
 remove_vma mm/mmap.c:143 [inline]
 exit_mmap+0x45f/0x8e0 mm/mmap.c:3268
 __mmput+0x118/0x3c0 kernel/fork.c:1200
 exit_mm+0x1e6/0x2c0 kernel/exit.c:565
 do_exit+0x8c1/0x2400 kernel/exit.c:867
 do_group_exit+0x217/0x2d0 kernel/exit.c:1022
 __do_sys_exit_group kernel/exit.c:1033 [inline]
 __se_sys_exit_group kernel/exit.c:1031 [inline]
 __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1031
 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: 0033:0x7fb0337ca6c5
Code: Unable to access opcode bytes at 0x7fb0337ca69b.
RSP: 002b:00007ffe5cab7ec8 EFLAGS: 00000202 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007ffe5cab8104 RCX: 00007fb0337ca6c5
RDX: 00000000000000e7 RSI: ffffffffffffff88 RDI: 0000000000000000
RBP: 0000000000000003 R08: 00007ffe5cab7fc0 R09: 0000000000000002
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 00007ffe5cab8200 R14: 00007fb0339d2000 R15: 000055a2a07eed98
 </TASK>
----------------
Code disassembly (best guess):
   0:	8d 73 10             	lea    0x10(%rbx),%esi
   3:	4c 89 f0             	mov    %r14,%rax
   6:	48 c1 e8 03          	shr    $0x3,%rax
   a:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1)
   f:	74 08                	je     0x19
  11:	4c 89 f7             	mov    %r14,%rdi
  14:	e8 16 77 98 00       	call   0x98772f
  19:	49 8b 06             	mov    (%r14),%rax
  1c:	4d 39 fc             	cmp    %r15,%r12
  1f:	0f 96 c1             	setbe  %cl
  22:	4c 39 f8             	cmp    %r15,%rax
  25:	0f 97 c2             	seta   %dl
  28:	20 ca                	and    %cl,%dl
* 2a:	80 fa 01             	cmp    $0x1,%dl <-- trapping instruction
  2d:	0f 85 82 00 00 00    	jne    0xb5
  33:	49 8d 4f 08          	lea    0x8(%r15),%rcx
  37:	4c 39 e1             	cmp    %r12,%rcx
  3a:	76 79                	jbe    0xb5
  3c:	48 39 c1             	cmp    %rax,%rcx
  3f:	77                   	.byte 0x77