------------[ cut here ]------------
WARNING: CPU: 1 PID: 5138 at net/mac80211/tx.c:5031 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5031 [inline]
WARNING: CPU: 1 PID: 5138 at net/mac80211/tx.c:5031 __ieee80211_beacon_get+0x1233/0x1600 net/mac80211/tx.c:5442
Modules linked in:
CPU: 1 PID: 5138 Comm: udevd Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5031 [inline]
RIP: 0010:__ieee80211_beacon_get+0x1233/0x1600 net/mac80211/tx.c:5442
Code: 24 4c 89 e7 e8 de 52 c2 f7 45 31 f6 4c 8b bc 24 a0 00 00 00 e9 7a fe ff ff e8 39 99 84 f7 0f 0b e9 f6 f7 ff ff e8 2d 99 84 f7 <0f> 0b e9 48 fb ff ff e8 21 99 84 f7 48 c7 c7 e0 50 64 8e 4c 89 e6
RSP: 0018:ffffc900001f0a18 EFLAGS: 00010246
RAX: ffffffff8a027b83 RBX: ffffffff8a026986 RCX: ffff88807d8e9e00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff88807d8e9e00 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff88805ee5a3c0
R13: dffffc0000000000 R14: ffff88805ee5a8b0 R15: ffff88802976ac24
FS:  00007faec9d86880(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f10f4be5698 CR3: 00000000192da000 CR4: 00000000003506e0
Call Trace:
 <IRQ>
 ieee80211_beacon_get_tim+0xbf/0x580 net/mac80211/tx.c:5569
 ieee80211_beacon_get include/net/mac80211.h:5440 [inline]
 mac80211_hwsim_beacon_tx+0x3c7/0x780 drivers/net/wireless/virtual/mac80211_hwsim.c:2265
 __iterate_interfaces+0x243/0x500 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:1750 [inline]
 __hrtimer_run_queues+0x52a/0xc40 kernel/time/hrtimer.c:1814
 hrtimer_run_softirq+0x187/0x2b0 kernel/time/hrtimer.c:1831
 handle_softirqs+0x280/0x820 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_kcov_mode kernel/kcov.c:184 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:245 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp8+0x30/0x80 kernel/kcov.c:320
Code: 04 24 65 48 8b 0d c0 9c 7c 7e 65 8b 15 c1 9c 7c 7e 81 e2 00 01 ff 00 74 11 81 fa 00 01 00 00 75 57 83 b9 1c 16 00 00 00 74 4e <8b> 91 f8 15 00 00 83 fa 03 75 43 48 8b 91 00 16 00 00 44 8b 89 fc
RSP: 0018:ffffc90003267c20 EFLAGS: 00000246
RAX: ffffffff813c9cdc RBX: 000000002caaad00 RCX: ffff88807d8e9e00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff88802caaad00 R08: ffffffff911bf52f R09: 1ffffffff2237ea5
R10: dffffc0000000000 R11: fffffbfff2237ea6 R12: 0000000000000000
R13: dffffc0000000000 R14: 000000000000002e R15: 0000000000000000
 phys_addr_valid arch/x86/mm/physaddr.h:7 [inline]
 __phys_addr+0xac/0x170 arch/x86/mm/physaddr.c:28
 virt_to_folio include/linux/mm.h:1289 [inline]
 virt_to_slab mm/slab.h:218 [inline]
 qlink_to_cache+0x5/0xa0 mm/kasan/quarantine.c:129
 qlist_free_all+0x39/0xd0 mm/kasan/quarantine.c:182
 kasan_quarantine_reduce+0x143/0x160 mm/kasan/quarantine.c:292
 __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:306
 kasan_slab_alloc include/linux/kasan.h:188 [inline]
 slab_post_alloc_hook+0x6e/0x4b0 mm/slab.h:767
 slab_alloc_node mm/slub.c:3495 [inline]
 slab_alloc mm/slub.c:3503 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3510 [inline]
 kmem_cache_alloc+0x11a/0x2d0 mm/slub.c:3519
 getname_flags+0xbb/0x500 fs/namei.c:140
 user_path_at_empty+0x2c/0x60 fs/namei.c:2916
 do_readlinkat+0xdd/0x490 fs/stat.c:494
 __do_sys_readlink fs/stat.c:527 [inline]
 __se_sys_readlink fs/stat.c:524 [inline]
 __x64_sys_readlink+0x7f/0x90 fs/stat.c:524
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7faec97153a7
Code: 00 00 90 48 83 ec 10 48 63 ff 45 31 c9 45 31 c0 6a 00 31 c9 e8 8a 20 f9 ff 48 83 c4 18 c3 0f 1f 44 00 00 b8 59 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 8b 15 21 ba 0d 00 f7 d8 64 89 02 48
RSP: 002b:00007fff513346c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000059
RAX: ffffffffffffffda RBX: 00007fff51334ba0 RCX: 00007faec97153a7
RDX: 0000000000000400 RSI: 00007fff513346d0 RDI: 00007fff51334ba0
RBP: 00007fff513346d0 R08: 0000558d0d73cce4 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000400
R13: 0000000000000100 R14: 0000558d07516be0 R15: 00007fff51335620
 </TASK>
----------------
Code disassembly (best guess):
   0:	04 24                	add    $0x24,%al
   2:	65 48 8b 0d c0 9c 7c 	mov    %gs:0x7e7c9cc0(%rip),%rcx        # 0x7e7c9cca
   9:	7e
   a:	65 8b 15 c1 9c 7c 7e 	mov    %gs:0x7e7c9cc1(%rip),%edx        # 0x7e7c9cd2
  11:	81 e2 00 01 ff 00    	and    $0xff0100,%edx
  17:	74 11                	je     0x2a
  19:	81 fa 00 01 00 00    	cmp    $0x100,%edx
  1f:	75 57                	jne    0x78
  21:	83 b9 1c 16 00 00 00 	cmpl   $0x0,0x161c(%rcx)
  28:	74 4e                	je     0x78
* 2a:	8b 91 f8 15 00 00    	mov    0x15f8(%rcx),%edx <-- trapping instruction
  30:	83 fa 03             	cmp    $0x3,%edx
  33:	75 43                	jne    0x78
  35:	48 8b 91 00 16 00 00 	mov    0x1600(%rcx),%rdx
  3c:	44                   	rex.R
  3d:	8b                   	.byte 0x8b
  3e:	89 fc                	mov    %edi,%esp