------------[ cut here ]------------
WARNING: CPU: 1 PID: 4231 at net/mac80211/tx.c:4859 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4859 [inline]
WARNING: CPU: 1 PID: 4231 at net/mac80211/tx.c:4859 __ieee80211_beacon_get+0x179f/0x2000 net/mac80211/tx.c:5083
Modules linked in:
CPU: 1 PID: 4231 Comm: kworker/1:6 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Workqueue: events iterate_cleanup_work
RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4859 [inline]
RIP: 0010:__ieee80211_beacon_get+0x179f/0x2000 net/mac80211/tx.c:5083
Code: 2a f8 0f 0b 4f 89 64 2f 04 4f 89 64 2f 0c 43 c6 44 2f 14 f8 e9 19 fe ff ff e8 0d 4b 2a f8 0f 0b e9 03 ef ff ff e8 01 4b 2a f8 <0f> 0b e9 76 f2 ff ff e8 a5 92 6d 00 89 d9 80 e1 07 80 c1 03 38 c1
RSP: 0018:ffffc90000dd08e0 EFLAGS: 00010246
RAX: ffffffff894ed60f RBX: ffff88805f026268 RCX: ffff88802615bb80
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000dd0b08 R08: ffff88802615bb80 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff88805ff41600
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff920001ba12c
FS:  0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fcb5e8fbff8 CR3: 00000000522a7000 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+0x4f2/0xb70 kernel/time/hrtimer.c:1749
 hrtimer_run_softirq+0x176/0x240 kernel/time/hrtimer.c:1766
 handle_softirqs+0x339/0x830 kernel/softirq.c:576
 __do_softirq kernel/softirq.c:610 [inline]
 invoke_softirq kernel/softirq.c:450 [inline]
 __irq_exit_rcu+0x13b/0x230 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:check_kcov_mode kernel/kcov.c:183 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:227 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp8+0x32/0x80 kernel/kcov.c:300
Code: c4 4a 89 7e 65 8b 15 c5 4a 89 7e 81 e2 00 01 ff 00 74 11 81 fa 00 01 00 00 75 57 83 b9 34 16 00 00 00 74 4e 8b 91 10 16 00 00 <83> fa 03 75 43 48 8b 91 18 16 00 00 44 8b 89 14 16 00 00 49 c1 e1
RSP: 0018:ffffc9000312fac0 EFLAGS: 00000246
RAX: ffffffff88248fb5 RBX: ffff88802b684800 RCX: ffff88802615bb80
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 1ffff110056d0900 R08: ffffffff901d4157 R09: 1ffffffff203a82a
R10: dffffc0000000000 R11: fffffbfff203a82b R12: dffffc0000000000
R13: 0000000000021201 R14: ffffc9000312fb60 R15: ffffffff882492b0
 get_next_corpse net/netfilter/nf_conntrack_core.c:2335 [inline]
 nf_ct_iterate_cleanup+0xc5/0x3c0 net/netfilter/nf_conntrack_core.c:2381
 nf_ct_iterate_cleanup_net+0x11d/0x190 net/netfilter/nf_conntrack_core.c:2465
 iterate_cleanup_work+0x66/0x120 net/netfilter/nf_nat_masquerade.c:83
 process_one_work+0x85f/0x1010 kernel/workqueue.c:2310
 worker_thread+0xaa6/0x1290 kernel/workqueue.c:2457
 kthread+0x436/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	4a 89 7e 65          	rex.WX mov %rdi,0x65(%rsi)
   4:	8b 15 c5 4a 89 7e    	mov    0x7e894ac5(%rip),%edx        # 0x7e894acf
   a:	81 e2 00 01 ff 00    	and    $0xff0100,%edx
  10:	74 11                	je     0x23
  12:	81 fa 00 01 00 00    	cmp    $0x100,%edx
  18:	75 57                	jne    0x71
  1a:	83 b9 34 16 00 00 00 	cmpl   $0x0,0x1634(%rcx)
  21:	74 4e                	je     0x71
  23:	8b 91 10 16 00 00    	mov    0x1610(%rcx),%edx
* 29:	83 fa 03             	cmp    $0x3,%edx <-- trapping instruction
  2c:	75 43                	jne    0x71
  2e:	48 8b 91 18 16 00 00 	mov    0x1618(%rcx),%rdx
  35:	44 8b 89 14 16 00 00 	mov    0x1614(%rcx),%r9d
  3c:	49                   	rex.WB
  3d:	c1                   	.byte 0xc1
  3e:	e1                   	.byte 0xe1