------------[ cut here ]------------
WARNING: CPU: 0 PID: 5954 at net/mac80211/tx.c:4861 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4861 [inline]
WARNING: CPU: 0 PID: 5954 at net/mac80211/tx.c:4861 __ieee80211_beacon_get+0x178a/0x1ff0 net/mac80211/tx.c:5085
Modules linked in:
CPU: 0 PID: 5954 Comm: syz.2.401 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4861 [inline]
RIP: 0010:__ieee80211_beacon_get+0x178a/0x1ff0 net/mac80211/tx.c:5085
Code: 27 f8 0f 0b 4f 89 64 2f 04 4f 89 64 2f 0c 43 c6 44 2f 14 f8 e9 19 fe ff ff e8 22 4d 27 f8 0f 0b e9 16 ef ff ff e8 16 4d 27 f8 <0f> 0b e9 7c f2 ff ff e8 da 70 6d 00 89 d9 80 e1 07 80 c1 03 38 c1
RSP: 0018:ffffc900000078c0 EFLAGS: 00010246
RAX: ffffffff8951a58a RBX: ffff88805bbc5c00 RCX: ffff88802362d940
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000007af8 R08: ffff88802362d940 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: f8f8f8f8f8f8f8f8
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff92000000f28
FS:  00007fb38fc8a6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3291fff8 CR3: 000000001f7fd000 CR4: 00000000003506f0
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:5204
 ieee80211_beacon_get include/net/mac80211.h:4983 [inline]
 mac80211_hwsim_beacon_tx+0x104/0x900 drivers/net/wireless/mac80211_hwsim.c:1812
 __iterate_interfaces+0x225/0x4c0 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+0x4ea/0xb60 kernel/time/hrtimer.c:1749
 hrtimer_run_softirq+0x176/0x240 kernel/time/hrtimer.c:1766
 handle_softirqs+0x336/0x830 kernel/softirq.c:576
 __do_softirq kernel/softirq.c:610 [inline]
 invoke_softirq kernel/softirq.c:450 [inline]
 __irq_exit_rcu+0x13b/0x230 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:__put_user_nocheck_8+0xb/0x21
Code: 01 cb 89 01 31 c9 0f 01 ca c3 90 90 90 90 90 90 48 bb f9 ef ff ff ff 7f 00 00 48 39 d9 73 14 0f 01 cb 48 89 01 31 c9 0f 01 ca <c3> 90 90 90 90 90 0f 01 ca b9 f2 ff ff ff c3 00 00 cc cc 00 00 cc
RSP: 0018:ffffc90003b1f8f8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffffc9000f29c000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffffc90003b1fa90 R08: ffffc90003b1f707 R09: 1ffff92000763ee0
R10: dffffc0000000000 R11: fffff52000763ee1 R12: dffffc0000000000
R13: 00002000003e2fa8 R14: 0000000000000000 R15: 0000000000000000
 ____sys_recvmsg+0x3ec/0x5b0 net/socket.c:2686
 ___sys_recvmsg+0x213/0x5c0 net/socket.c:2707
 do_recvmmsg+0x360/0x7f0 net/socket.c:2801
 __sys_recvmmsg net/socket.c:2880 [inline]
 __do_sys_recvmmsg net/socket.c:2903 [inline]
 __se_sys_recvmmsg net/socket.c:2896 [inline]
 __x64_sys_recvmmsg+0x195/0x250 net/socket.c:2896
 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: 0033:0x7fb391a52e59
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:00007fb38fc8a028 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007fb391cdb090 RCX: 00007fb391a52e59
RDX: 0000000000010106 RSI: 00002000000000c0 RDI: 0000000000000003
RBP: 00007fb391ae8e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb391cdb128 R14: 00007fb391cdb090 R15: 00007ffc47c2abe8
 </TASK>
----------------
Code disassembly (best guess):
   0:	01 cb                	add    %ecx,%ebx
   2:	89 01                	mov    %eax,(%rcx)
   4:	31 c9                	xor    %ecx,%ecx
   6:	0f 01 ca             	clac
   9:	c3                   	ret
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	48 bb f9 ef ff ff ff 	movabs $0x7fffffffeff9,%rbx
  17:	7f 00 00
  1a:	48 39 d9             	cmp    %rbx,%rcx
  1d:	73 14                	jae    0x33
  1f:	0f 01 cb             	stac
  22:	48 89 01             	mov    %rax,(%rcx)
  25:	31 c9                	xor    %ecx,%ecx
  27:	0f 01 ca             	clac
* 2a:	c3                   	ret <-- trapping instruction
  2b:	90                   	nop
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	90                   	nop
  2f:	90                   	nop
  30:	0f 01 ca             	clac
  33:	b9 f2 ff ff ff       	mov    $0xfffffff2,%ecx
  38:	c3                   	ret
  39:	00 00                	add    %al,(%rax)
  3b:	cc                   	int3
  3c:	cc                   	int3
  3d:	00 00                	add    %al,(%rax)
  3f:	cc                   	int3