------------[ cut here ]------------
WARNING: CPU: 0 PID: 6285 at net/mac80211/tx.c:4981 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4981 [inline]
WARNING: CPU: 0 PID: 6285 at net/mac80211/tx.c:4981 __ieee80211_beacon_get+0x1141/0x1520 net/mac80211/tx.c:5382
Modules linked in:
CPU: 0 PID: 6285 Comm: syz.3.663 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026
RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4981 [inline]
RIP: 0010:__ieee80211_beacon_get+0x1141/0x1520 net/mac80211/tx.c:5382
Code: f7 4c 89 ef e8 60 37 01 f8 45 31 ed 4c 8b bc 24 a0 00 00 00 e9 7f fe ff ff e8 8b 6a c8 f7 0f 0b e9 61 f8 ff ff e8 7f 6a c8 f7 <0f> 0b e9 85 fb ff ff e8 73 6a c8 f7 48 c7 c7 40 13 fd 8e 4c 89 e6
RSP: 0018:ffffc90000007a48 EFLAGS: 00010246
RAX: ffffffff89b9fe21 RBX: dffffc0000000000 RCX: ffff8880325c5a00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff8880325c5a00 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff88807430e208
R13: ffff888055a80824 R14: ffff88807430e740 R15: ffff888055a80800
FS:  00007fe186bf96c0(0000) GS:ffff8880b8c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000005000 CR3: 000000007e523000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 ieee80211_beacon_get_tim+0x63/0x4e0 net/mac80211/tx.c:5509
 ieee80211_beacon_get include/net/mac80211.h:5338 [inline]
 mac80211_hwsim_beacon_tx+0x21c/0xae0 drivers/net/wireless/mac80211_hwsim.c:2097
 __iterate_interfaces+0x225/0x4c0 net/mac80211/util.c:788
 ieee80211_iterate_active_interfaces_atomic+0xd7/0x170 net/mac80211/util.c:824
 mac80211_hwsim_beacon+0xb7/0x1b0 drivers/net/wireless/mac80211_hwsim.c:2153
 __run_hrtimer kernel/time/hrtimer.c:1751 [inline]
 __hrtimer_run_queues+0x522/0xc90 kernel/time/hrtimer.c:1815
 hrtimer_run_softirq+0x173/0x290 kernel/time/hrtimer.c:1832
 handle_softirqs+0x291/0x910 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:679
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:finish_task_switch+0x267/0x8e0 kernel/sched/core.c:5136
Code: dd 08 85 c0 0f 84 38 01 00 00 48 85 db 0f 85 57 01 00 00 0f 1f 44 00 00 4c 89 e7 e8 33 d6 e7 08 e8 5e 44 2f 00 fb 4c 8b 65 b8 <49> 8d bc 24 f8 15 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0
RSP: 0018:ffffc90003e1f6e0 EFLAGS: 00000282
RAX: 52ba06877fcbaf00 RBX: 0000000000000000 RCX: 52ba06877fcbaf00
RDX: dffffc0000000000 RSI: ffffffff8aac1cc0 RDI: ffffffff8afe72a0
RBP: ffffc90003e1f730 R08: ffff8880b8c3ad03 R09: 1ffff110171875a0
R10: dffffc0000000000 R11: ffffed10171875a1 R12: ffff8880325c5a00
R13: 1ffff110171876fa R14: dffffc0000000000 R15: ffff8880b8c3b7d0
 context_switch kernel/sched/core.c:5260 [inline]
 __schedule+0x1091/0x4140 kernel/sched/core.c:6584
 schedule+0xb9/0x180 kernel/sched/core.c:6660
 schedule_timeout+0x184/0x2d0 kernel/time/timer.c:2168
 snd_rawmidi_write+0x3af/0xc60 sound/core/rawmidi.c:1605
 do_loop_readv_writev fs/read_write.c:-1 [inline]
 do_iter_write+0x4a4/0xb10 fs/read_write.c:863
 vfs_writev fs/read_write.c:934 [inline]
 do_writev+0x27b/0x480 fs/read_write.c:977
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fe185da94d9
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:00007fe186bf9028 EFLAGS: 00000246 ORIG_RAX: 0000000000000014
RAX: ffffffffffffffda RBX: 00007fe186025fa0 RCX: 00007fe185da94d9
RDX: 0000000000000002 RSI: 0000200000000840 RDI: 0000000000000005
RBP: 00007fe185e3804e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe186026038 R14: 00007fe186025fa0 R15: 00007ffea259fa88
 </TASK>
----------------
Code disassembly (best guess):
   0:	dd 08                	fisttpll (%rax)
   2:	85 c0                	test   %eax,%eax
   4:	0f 84 38 01 00 00    	je     0x142
   a:	48 85 db             	test   %rbx,%rbx
   d:	0f 85 57 01 00 00    	jne    0x16a
  13:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  18:	4c 89 e7             	mov    %r12,%rdi
  1b:	e8 33 d6 e7 08       	call   0x8e7d653
  20:	e8 5e 44 2f 00       	call   0x2f4483
  25:	fb                   	sti
  26:	4c 8b 65 b8          	mov    -0x48(%rbp),%r12
* 2a:	49 8d bc 24 f8 15 00 	lea    0x15f8(%r12),%rdi <-- trapping instruction
  31:	00
  32:	48 89 f8             	mov    %rdi,%rax
  35:	48 c1 e8 03          	shr    $0x3,%rax
  39:	42 0f b6 04 30       	movzbl (%rax,%r14,1),%eax
  3e:	84 c0                	test   %al,%al