------------[ cut here ]------------
WARNING: CPU: 1 PID: 6963 at net/mac80211/tx.c:5057 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5057 [inline]
WARNING: CPU: 1 PID: 6963 at net/mac80211/tx.c:5057 __ieee80211_beacon_get+0x1141/0x1520 net/mac80211/tx.c:5468
Modules linked in:
CPU: 1 PID: 6963 Comm: syz.2.280 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5057 [inline]
RIP: 0010:__ieee80211_beacon_get+0x1141/0x1520 net/mac80211/tx.c:5468
Code: f7 4c 89 ef e8 00 24 b5 f7 45 31 ed 4c 8b bc 24 a0 00 00 00 e9 7f fe ff ff e8 4b df 76 f7 0f 0b e9 61 f8 ff ff e8 3f df 76 f7 <0f> 0b e9 85 fb ff ff e8 33 df 76 f7 48 c7 c7 40 92 45 8f 4c 89 e6
RSP: 0018:ffffc900001f0a18 EFLAGS: 00010246
RAX: ffffffff8a10b171 RBX: dffffc0000000000 RCX: ffff8880322c0000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff8880322c0000 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff88805d7e6440
R13: ffff88805e33d424 R14: ffff88805d7e6930 R15: ffff88805e33d400
FS:  00007f5b926b16c0(0000) GS:ffff8880b8d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000098030 CR3: 0000000024921000 CR4: 00000000003506e0
Call Trace:
 <IRQ>
 ieee80211_beacon_get_tim+0xbf/0x580 net/mac80211/tx.c:5595
 ieee80211_beacon_get include/net/mac80211.h:5443 [inline]
 mac80211_hwsim_beacon_tx+0x3bd/0x770 drivers/net/wireless/virtual/mac80211_hwsim.c:2271
 __iterate_interfaces+0x225/0x4c0 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:2301
 __run_hrtimer kernel/time/hrtimer.c:1754 [inline]
 __hrtimer_run_queues+0x525/0xc10 kernel/time/hrtimer.c:1818
 hrtimer_run_softirq+0x177/0x290 kernel/time/hrtimer.c:1835
 handle_softirqs+0x27d/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:skb_free_datagram+0x5/0x20 net/core/datagram.c:321
Code: 3b 44 24 18 75 12 4c 89 f8 48 83 c4 20 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 78 32 11 02 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 53 <48> 89 f3 e8 03 b9 05 f9 48 89 df 5b e9 1a d1 fc ff 66 2e 0f 1f 84
RSP: 0018:ffffc90003467710 EFLAGS: 00000246
RAX: 82ed834bc26b0600 RBX: ffff888076f81800 RCX: 0000000000080000
RDX: ffffc9000dc16000 RSI: ffff8880754913c0 RDI: ffff888076a47000
RBP: ffffc90003467898 R08: ffff888076f8180f R09: 1ffff1100edf0301
R10: dffffc0000000000 R11: ffffed100edf0302 R12: 1ffff9200068cef0
R13: dffffc0000000000 R14: dffffc0000000000 R15: ffff8880754913c0
 __unix_dgram_recvmsg+0xa05/0xd90 net/unix/af_unix.c:2502
 sock_recvmsg_nosec+0x82/0xd0 net/socket.c:1047
 ____sys_recvmsg+0x4d7/0x5d0 net/socket.c:2812
 ___sys_recvmsg+0x214/0x590 net/socket.c:2856
 do_recvmmsg+0x377/0x810 net/socket.c:2950
 __sys_recvmmsg net/socket.c:3029 [inline]
 __do_sys_recvmmsg net/socket.c:3052 [inline]
 __se_sys_recvmmsg net/socket.c:3045 [inline]
 __x64_sys_recvmmsg+0x199/0x250 net/socket.c:3045
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f5b9179e559
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:00007f5b926b1028 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007f5b91a26090 RCX: 00007f5b9179e559
RDX: 0000000004000087 RSI: 0000200000000740 RDI: 0000000000000003
RBP: 00007f5b918358b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5b91a26128 R14: 00007f5b91a26090 R15: 00007fffcb5b0388
 </TASK>
----------------
Code disassembly (best guess):
   0:	3b 44 24 18          	cmp    0x18(%rsp),%eax
   4:	75 12                	jne    0x18
   6:	4c 89 f8             	mov    %r15,%rax
   9:	48 83 c4 20          	add    $0x20,%rsp
   d:	5b                   	pop    %rbx
   e:	41 5c                	pop    %r12
  10:	41 5d                	pop    %r13
  12:	41 5e                	pop    %r14
  14:	41 5f                	pop    %r15
  16:	5d                   	pop    %rbp
  17:	c3                   	ret
  18:	e8 78 32 11 02       	call   0x2113295
  1d:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
  24:	00
  25:	f3 0f 1e fa          	endbr64
  29:	53                   	push   %rbx
* 2a:	48 89 f3             	mov    %rsi,%rbx <-- trapping instruction
  2d:	e8 03 b9 05 f9       	call   0xf905b935
  32:	48 89 df             	mov    %rbx,%rdi
  35:	5b                   	pop    %rbx
  36:	e9 1a d1 fc ff       	jmp    0xfffcd155
  3b:	66                   	data16
  3c:	2e                   	cs
  3d:	0f                   	.byte 0xf
  3e:	1f                   	(bad)
  3f:	84                   	.byte 0x84