------------[ cut here ]------------
WARNING: CPU: 0 PID: 4894 at net/mac80211/tx.c:4944 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4944 [inline]
WARNING: CPU: 0 PID: 4894 at net/mac80211/tx.c:4944 __ieee80211_beacon_get+0x1233/0x1600 net/mac80211/tx.c:5345
Modules linked in:
CPU: 0 PID: 4894 Comm: syz.3.154 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
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 9e d3 0a f8 45 31 f6 4c 8b bc 24 a0 00 00 00 e9 7a fe ff ff e8 39 3d d2 f7 0f 0b e9 f6 f7 ff ff e8 2d 3d d2 f7 <0f> 0b e9 48 fb ff ff e8 21 3d d2 f7 48 c7 c7 50 d6 fa 8d 4c 89 e6
vkms_vblank_simulate: vblank timer overrun
RSP: 0018:ffffc90000007a30 EFLAGS: 00010246
RAX: ffffffff89b03583 RBX: ffffffff89b02386 RCX: ffff888029e15940
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff888029e15940 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff888054db2228
R13: dffffc0000000000 R14: ffff888054db2760 R15: ffff88807491a824
FS:  00007f9854bd56c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9854bd5d58 CR3: 0000000062066000 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:memset+0x1/0x40 mm/kasan/shadow.c:43
Code: 08 31 ed eb d7 00 00 cc cc 89 f6 48 8b 0c 24 31 d2 e9 a3 ec ff ff 0f 1f 00 89 f6 48 8b 0c 24 ba 01 00 00 00 e9 90 ec ff ff 55 <41> 56 53 48 89 d3 89 f5 49 89 fe 48 8b 4c 24 18 48 89 d6 ba 01 00
RSP: 0018:ffffc90003ec78d0 EFLAGS: 00000246
RAX: ffffffff882841ad RBX: ffffc90003ec7d20 RCX: 0000000000000002
RDX: 0000000000000080 RSI: 0000000000000000 RDI: ffffc90003ec7980
RBP: ffffc90003ec7a70 R08: 0000000000000002 R09: 0000000000002ec2
R10: dffffc0000000000 R11: fffff520007d8fb0 R12: ffffc90003ec7980
R13: dffffc0000000000 R14: 1ffff920007d8f2c R15: 0000000000000002
 ____sys_recvmsg+0xe3/0x5e0 net/socket.c:2719
 ___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: 0033:0x7f985699c799
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:00007f9854bd5028 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007f9856c16090 RCX: 00007f985699c799
RDX: 0000000000010106 RSI: 00002000000000c0 RDI: 0000000000000006
RBP: 00007f9856a32c99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9856c16128 R14: 00007f9856c16090 R15: 00007ffdabcfd5a8
 </TASK>
----------------
Code disassembly (best guess):
   0:	08 31                	or     %dh,(%rcx)
   2:	ed                   	in     (%dx),%eax
   3:	eb d7                	jmp    0xffffffdc
   5:	00 00                	add    %al,(%rax)
   7:	cc                   	int3
   8:	cc                   	int3
   9:	89 f6                	mov    %esi,%esi
   b:	48 8b 0c 24          	mov    (%rsp),%rcx
   f:	31 d2                	xor    %edx,%edx
  11:	e9 a3 ec ff ff       	jmp    0xffffecb9
  16:	0f 1f 00             	nopl   (%rax)
  19:	89 f6                	mov    %esi,%esi
  1b:	48 8b 0c 24          	mov    (%rsp),%rcx
  1f:	ba 01 00 00 00       	mov    $0x1,%edx
  24:	e9 90 ec ff ff       	jmp    0xffffecb9
  29:	55                   	push   %rbp
* 2a:	41 56                	push   %r14 <-- trapping instruction
  2c:	53                   	push   %rbx
  2d:	48 89 d3             	mov    %rdx,%rbx
  30:	89 f5                	mov    %esi,%ebp
  32:	49 89 fe             	mov    %rdi,%r14
  35:	48 8b 4c 24 18       	mov    0x18(%rsp),%rcx
  3a:	48 89 d6             	mov    %rdx,%rsi
  3d:	ba                   	.byte 0xba
  3e:	01 00                	add    %eax,(%rax)