------------[ cut here ]------------
WARNING: CPU: 0 PID: 19889 at net/mac80211/tx.c:5031 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5031 [inline]
WARNING: CPU: 0 PID: 19889 at net/mac80211/tx.c:5031 __ieee80211_beacon_get+0x1233/0x1600 net/mac80211/tx.c:5442
Modules linked in:
CPU: 0 PID: 19889 Comm: syz.8.3567 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:ffffc90000007a18 EFLAGS: 00010246
RAX: ffffffff8a027b83 RBX: ffffffff8a026986 RCX: ffff88802fa65a00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff88802fa65a00 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff888078dce3c0
R13: dffffc0000000000 R14: ffff888078dce8b0 R15: ffff888066b7f824
FS:  00007fdd29f006c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c3c63ed CR3: 0000000039388000 CR4: 00000000003506f0
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:__skb_datagram_iter+0x135/0x780 net/core/datagram.c:-1
Code: 29 dc 0f 84 07 05 00 00 e8 68 98 11 f9 48 bd 00 00 00 00 00 fc ff df 4c 8b 2c 24 eb 08 e8 53 98 11 f9 45 89 f5 4c 89 64 24 10 <48> 8b 5c 24 20 4c 8d b3 d0 00 00 00 48 81 c3 cc 00 00 00 4c 89 f0
RSP: 0018:ffffc90010ce7650 EFLAGS: 00000246
RAX: ffffffff88757c5d RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc9000d653000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: dffffc0000000000 R08: 0000000000000000 R09: ffffffff887584b0
R10: dffffc0000000000 R11: fffffbfff1d15ba6 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 skb_copy_datagram_iter+0xb1/0x200 net/core/datagram.c:535
 skb_copy_datagram_msg include/linux/skbuff.h:4020 [inline]
 __unix_dgram_recvmsg+0x6a1/0xd80 net/unix/af_unix.c:2449
 sock_recvmsg_nosec+0x82/0xd0 net/socket.c:1046
 ____sys_recvmsg+0x4e8/0x5e0 net/socket.c:2811
 ___sys_recvmsg+0x216/0x590 net/socket.c:2855
 do_recvmmsg+0x39a/0x870 net/socket.c:2949
 __sys_recvmmsg net/socket.c:3028 [inline]
 __do_sys_recvmmsg net/socket.c:3051 [inline]
 __se_sys_recvmmsg net/socket.c:3044 [inline]
 __x64_sys_recvmmsg+0x199/0x250 net/socket.c:3044
 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: 0033:0x7fdd28f9af79
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:00007fdd29f00028 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007fdd29216090 RCX: 00007fdd28f9af79
RDX: 0000000000010106 RSI: 00002000000000c0 RDI: 0000000000000004
RBP: 00007fdd290316e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fdd29216128 R14: 00007fdd29216090 R15: 00007ffc58ef19d8
 </TASK>
----------------
Code disassembly (best guess):
   0:	29 dc                	sub    %ebx,%esp
   2:	0f 84 07 05 00 00    	je     0x50f
   8:	e8 68 98 11 f9       	call   0xf9119875
   d:	48 bd 00 00 00 00 00 	movabs $0xdffffc0000000000,%rbp
  14:	fc ff df
  17:	4c 8b 2c 24          	mov    (%rsp),%r13
  1b:	eb 08                	jmp    0x25
  1d:	e8 53 98 11 f9       	call   0xf9119875
  22:	45 89 f5             	mov    %r14d,%r13d
  25:	4c 89 64 24 10       	mov    %r12,0x10(%rsp)
* 2a:	48 8b 5c 24 20       	mov    0x20(%rsp),%rbx <-- trapping instruction
  2f:	4c 8d b3 d0 00 00 00 	lea    0xd0(%rbx),%r14
  36:	48 81 c3 cc 00 00 00 	add    $0xcc,%rbx
  3d:	4c 89 f0             	mov    %r14,%rax