------------[ cut here ]------------
WARNING: CPU: 0 PID: 4496 at net/mac80211/tx.c:4859 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4859 [inline]
WARNING: CPU: 0 PID: 4496 at net/mac80211/tx.c:4859 __ieee80211_beacon_get+0x179f/0x2000 net/mac80211/tx.c:5083
Modules linked in:
CPU: 0 PID: 4496 Comm: syz.2.51 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4859 [inline]
RIP: 0010:__ieee80211_beacon_get+0x179f/0x2000 net/mac80211/tx.c:5083
Code: 2a 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 6d 14 2a f8 0f 0b e9 03 ef ff ff e8 61 14 2a f8 <0f> 0b e9 76 f2 ff ff e8 65 a9 6d 00 89 d9 80 e1 07 80 c1 03 38 c1
RSP: 0018:ffffc900000078e0 EFLAGS: 00010246
RAX: ffffffff894f202f RBX: ffff88807b3d6268 RCX: ffff888077bf0000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000007b08 R08: ffff888077bf0000 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff88801f580c00
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff92000000f2c
FS:  00007f8b09b806c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32a1dff8 CR3: 000000001fd99000 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: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+0x4f2/0xb70 kernel/time/hrtimer.c:1749
 hrtimer_run_softirq+0x176/0x240 kernel/time/hrtimer.c:1766
 handle_softirqs+0x339/0x830 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:arch_irqs_disabled_flags arch/x86/include/asm/irqflags.h:127 [inline]
RIP: 0010:___might_sleep+0x176/0x610 kernel/sched/core.c:9626
Code: 85 53 03 00 00 45 03 7d 00 44 3b 7c 24 2c 75 70 42 c6 44 23 0c 00 48 c7 84 24 a0 00 00 00 00 00 00 00 9c 8f 84 24 a0 00 00 00 <f7> 84 24 a0 00 00 00 00 02 00 00 42 c6 44 23 0c f8 74 43 4c 8d 7a
RSP: 0018:ffffc9000330f920 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 1ffff92000661f2c RCX: 42b1d229aadbb400
RDX: ffff888077bf0000 RSI: ffffffff8a2b3aa0 RDI: ffffffff8a79fe00
RBP: ffffc9000330fa28 R08: ffffc9000330fb37 R09: ffffc9000330fb00
R10: dffffc0000000000 R11: fffff52000661f67 R12: dffffc0000000000
R13: ffff888077bf043c R14: 1ffff1100ef7e087 R15: 0000000000000000
 __might_fault+0x6b/0x110 mm/memory.c:5354
 _copy_from_user+0x29/0x170 lib/usercopy.c:14
 copy_from_user include/linux/uaccess.h:192 [inline]
 __copy_msghdr_from_user net/socket.c:2327 [inline]
 copy_msghdr_from_user net/socket.c:2378 [inline]
 recvmsg_copy_msghdr net/socket.c:2630 [inline]
 ___sys_recvmsg+0x173/0x5c0 net/socket.c:2702
 do_recvmmsg+0x382/0x850 net/socket.c:2800
 __sys_recvmmsg net/socket.c:2879 [inline]
 __do_sys_recvmmsg net/socket.c:2902 [inline]
 __se_sys_recvmmsg net/socket.c:2895 [inline]
 __x64_sys_recvmmsg+0x195/0x250 net/socket.c:2895
 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: 0033:0x7f8b0b947dd9
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:00007f8b09b80028 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007f8b0bbc1090 RCX: 00007f8b0b947dd9
RDX: 0000000000010106 RSI: 00002000000000c0 RDI: 0000000000000004
RBP: 00007f8b0b9ddd69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8b0bbc1128 R14: 00007f8b0bbc1090 R15: 00007fff5843b038
 </TASK>
----------------
Code disassembly (best guess):
   0:	85 53 03             	test   %edx,0x3(%rbx)
   3:	00 00                	add    %al,(%rax)
   5:	45 03 7d 00          	add    0x0(%r13),%r15d
   9:	44 3b 7c 24 2c       	cmp    0x2c(%rsp),%r15d
   e:	75 70                	jne    0x80
  10:	42 c6 44 23 0c 00    	movb   $0x0,0xc(%rbx,%r12,1)
  16:	48 c7 84 24 a0 00 00 	movq   $0x0,0xa0(%rsp)
  1d:	00 00 00 00 00
  22:	9c                   	pushf
  23:	8f 84 24 a0 00 00 00 	pop    0xa0(%rsp)
* 2a:	f7 84 24 a0 00 00 00 	testl  $0x200,0xa0(%rsp) <-- trapping instruction
  31:	00 02 00 00
  35:	42 c6 44 23 0c f8    	movb   $0xf8,0xc(%rbx,%r12,1)
  3b:	74 43                	je     0x80
  3d:	4c                   	rex.WR
  3e:	8d                   	.byte 0x8d
  3f:	7a                   	.byte 0x7a