------------[ cut here ]------------
WARNING: CPU: 1 PID: 3548 at net/mac80211/tx.c:4859 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4859 [inline]
WARNING: CPU: 1 PID: 3548 at net/mac80211/tx.c:4859 __ieee80211_beacon_get+0x172c/0x1f80 net/mac80211/tx.c:5083
Modules linked in:
CPU: 1 PID: 3548 Comm: klogd Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4859 [inline]
RIP: 0010:__ieee80211_beacon_get+0x172c/0x1f80 net/mac80211/tx.c:5083
Code: f8 0f 0b e9 f1 fa ff ff e8 f1 c2 41 f8 0f 0b 4c 8b 74 24 08 e9 36 fe ff ff e8 e0 c2 41 f8 0f 0b e9 3c ef ff ff e8 d4 c2 41 f8 <0f> 0b e9 b8 f2 ff ff e8 f8 dd 6b 00 44 89 e1 80 e1 07 80 c1 03 38
RSP: 0018:ffffc90000dd08c0 EFLAGS: 00010246
RAX: ffffffff8936093c RBX: ffff888060b90c80 RCX: ffff88807dda3b80
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000dd0ae8 R08: ffff88807dda3b80 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff888077869600
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff920001ba128
FS:  00007fde55e88c80(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0ad3c90e9c CR3: 000000002a6a3000 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+0x53d/0xc40 kernel/time/hrtimer.c:1749
 hrtimer_run_softirq+0x176/0x240 kernel/time/hrtimer.c:1766
 handle_softirqs+0x328/0x820 kernel/softirq.c:576
 __do_softirq kernel/softirq.c:610 [inline]
 invoke_softirq kernel/softirq.c:450 [inline]
 __irq_exit_rcu+0x12f/0x220 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:_copy_from_iter+0x60c/0x1150 lib/iov_iter.c:776
Code: 10 45 31 ff 48 8b 44 24 68 42 80 3c 28 00 4c 8b 74 24 70 74 08 4c 89 f7 e8 f1 5d e3 fd 4d 89 3e 48 8b 4c 24 50 42 80 3c 29 00 <4c> 8b 7c 24 58 74 08 4c 89 ff e8 55 5d e3 fd 48 89 5c 24 08 4c 8b
RSP: 0018:ffffc90002e2f960 EFLAGS: 00000246
RAX: 1ffff920005c5fbf RBX: ffffc90002e2fe70 RCX: 1ffff920005c5fc1
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90002e2fab0 R08: dffffc0000000000 R09: ffffed100f371515
R10: 0000000000000000 R11: 0000000000000010 R12: 00000000000000a2
R13: dffffc0000000000 R14: ffffc90002e2fdf8 R15: 0000000000000000
 copy_from_iter include/linux/uio.h:164 [inline]
 skb_copy_datagram_from_iter+0xf2/0x6a0 net/core/datagram.c:567
 unix_dgram_sendmsg+0x861/0x1890 net/unix/af_unix.c:1822
 sock_sendmsg_nosec net/socket.c:706 [inline]
 __sock_sendmsg net/socket.c:718 [inline]
 __sys_sendto+0x423/0x580 net/socket.c:2073
 __do_sys_sendto net/socket.c:2085 [inline]
 __se_sys_sendto net/socket.c:2081 [inline]
 __x64_sys_sendto+0xda/0xf0 net/socket.c:2081
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fde55fd8407
Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff
RSP: 002b:00007ffc2ea48500 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007fde55e88c80 RCX: 00007fde55fd8407
RDX: 00000000000000a2 RSI: 00007ffc2ea48640 RDI: 0000000000000003
RBP: 00007ffc2ea48a70 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004000 R11: 0000000000000202 R12: 00007ffc2ea48a88
R13: 00007ffc2ea48640 R14: 0000000000000087 R15: 00007ffc2ea48640
 </TASK>
----------------
Code disassembly (best guess):
   0:	10 45 31             	adc    %al,0x31(%rbp)
   3:	ff 48 8b             	decl   -0x75(%rax)
   6:	44 24 68             	rex.R and $0x68,%al
   9:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1)
   e:	4c 8b 74 24 70       	mov    0x70(%rsp),%r14
  13:	74 08                	je     0x1d
  15:	4c 89 f7             	mov    %r14,%rdi
  18:	e8 f1 5d e3 fd       	call   0xfde35e0e
  1d:	4d 89 3e             	mov    %r15,(%r14)
  20:	48 8b 4c 24 50       	mov    0x50(%rsp),%rcx
  25:	42 80 3c 29 00       	cmpb   $0x0,(%rcx,%r13,1)
* 2a:	4c 8b 7c 24 58       	mov    0x58(%rsp),%r15 <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	4c 89 ff             	mov    %r15,%rdi
  34:	e8 55 5d e3 fd       	call   0xfde35d8e
  39:	48 89 5c 24 08       	mov    %rbx,0x8(%rsp)
  3e:	4c                   	rex.WR
  3f:	8b                   	.byte 0x8b