------------[ cut here ]------------
WARNING: CPU: 0 PID: 9182 at net/mac80211/tx.c:4944 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4944 [inline]
WARNING: CPU: 0 PID: 9182 at net/mac80211/tx.c:4944 __ieee80211_beacon_get+0x1233/0x1600 net/mac80211/tx.c:5345
Modules linked in:
CPU: 0 PID: 9182 Comm: syz.2.1551 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4944 [inline]
RIP: 0010:__ieee80211_beacon_get+0x1233/0x1600 net/mac80211/tx.c:5345
Code: 24 4c 89 e7 e8 7e 06 0a f8 45 31 f6 4c 8b bc 24 a0 00 00 00 e9 7a fe ff ff e8 79 66 d1 f7 0f 0b e9 f6 f7 ff ff e8 6d 66 d1 f7 <0f> 0b e9 48 fb ff ff e8 61 66 d1 f7 48 c7 c7 50 f1 fa 8d 4c 89 e6
RSP: 0018:ffffc90000007a30 EFLAGS: 00010246
RAX: ffffffff89b10ee3 RBX: ffffffff89b0fce6 RCX: ffff88802fc1bb80
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff88802fc1bb80 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff8880299a2228
R13: dffffc0000000000 R14: ffff8880299a2760 R15: ffff88802e129824
FS:  00007f14727a96c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1e00bf6d58 CR3: 00000000667e8000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 ieee80211_beacon_get_tim+0x63/0x4e0 net/mac80211/tx.c:5472
 ieee80211_beacon_get include/net/mac80211.h:5335 [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:1747 [inline]
 __hrtimer_run_queues+0x54a/0xd50 kernel/time/hrtimer.c:1811
 hrtimer_run_softirq+0x183/0x2a0 kernel/time/hrtimer.c:1828
 handle_softirqs+0x2a1/0x930 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x13b/0x230 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_kcov_mode kernel/kcov.c:184 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:245 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x2c/0x80 kernel/kcov.c:313
Code: 04 24 65 48 8b 15 84 f6 7f 7e 65 8b 0d 85 f6 7f 7e 81 e1 00 01 ff 00 74 11 81 f9 00 01 00 00 75 5b 83 ba 1c 16 00 00 00 74 52 <8b> 8a f8 15 00 00 83 f9 03 75 47 48 8b 8a 00 16 00 00 44 8b 8a fc
RSP: 0018:ffffc900039cf8d8 EFLAGS: 00000246
RAX: ffffffff8828989d RBX: ffffc900039cfd20 RCX: 0000000000000000
RDX: ffff88802fc1bb80 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc900039cfa70 R08: 0000000000000002 R09: 000000000000ceda
R10: dffffc0000000000 R11: fffff52000739fb0 R12: ffffc900039cf980
R13: dffffc0000000000 R14: 1ffff92000739f2c R15: 0000000000000002
 ____sys_recvmsg+0xbd/0x5e0 net/socket.c:2718
 ___sys_recvmsg+0x212/0x590 net/socket.c:2779
 do_recvmmsg+0x393/0x870 net/socket.c:2873
 __sys_recvmmsg net/socket.c:2952 [inline]
 __do_sys_recvmmsg net/socket.c:2975 [inline]
 __se_sys_recvmmsg net/socket.c:2968 [inline]
 __x64_sys_recvmmsg+0x195/0x250 net/socket.c:2968
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f147199c819
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f14727a9028 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007f1471c16180 RCX: 00007f147199c819
RDX: 0000000000010106 RSI: 00002000000000c0 RDI: 0000000000000003
RBP: 00007f1471a32c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1471c16218 R14: 00007f1471c16180 R15: 00007ffe5def4698
 </TASK>
----------------
Code disassembly (best guess):
   0:	04 24                	add    $0x24,%al
   2:	65 48 8b 15 84 f6 7f 	mov    %gs:0x7e7ff684(%rip),%rdx        # 0x7e7ff68e
   9:	7e
   a:	65 8b 0d 85 f6 7f 7e 	mov    %gs:0x7e7ff685(%rip),%ecx        # 0x7e7ff696
  11:	81 e1 00 01 ff 00    	and    $0xff0100,%ecx
  17:	74 11                	je     0x2a
  19:	81 f9 00 01 00 00    	cmp    $0x100,%ecx
  1f:	75 5b                	jne    0x7c
  21:	83 ba 1c 16 00 00 00 	cmpl   $0x0,0x161c(%rdx)
  28:	74 52                	je     0x7c
* 2a:	8b 8a f8 15 00 00    	mov    0x15f8(%rdx),%ecx <-- trapping instruction
  30:	83 f9 03             	cmp    $0x3,%ecx
  33:	75 47                	jne    0x7c
  35:	48 8b 8a 00 16 00 00 	mov    0x1600(%rdx),%rcx
  3c:	44                   	rex.R
  3d:	8b                   	.byte 0x8b
  3e:	8a fc                	mov    %ah,%bh