------------[ cut here ]------------ WARNING: CPU: 1 PID: 26 at net/mac80211/tx.c:5040 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5040 [inline] WARNING: CPU: 1 PID: 26 at net/mac80211/tx.c:5040 __ieee80211_beacon_get+0x1202/0x15c0 net/mac80211/tx.c:5469 Modules linked in: CPU: 1 UID: 0 PID: 26 Comm: kworker/1:0H Not tainted 6.14.0-rc2-next-20250210-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Workqueue: events_highpri snd_vmidi_output_work RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5040 [inline] RIP: 0010:__ieee80211_beacon_get+0x1202/0x15c0 net/mac80211/tx.c:5469 Code: e8 63 71 4a f6 eb 0d e8 5c 71 4a f6 4c 8b bc 24 98 00 00 00 4c 89 ef e8 fc e3 a5 f6 45 31 ed e9 4c fe ff ff e8 3f 71 4a f6 90 <0f> 0b 90 e9 00 f7 ff ff e8 31 71 4a f6 90 0f 0b 90 e9 e8 f8 ff ff RSP: 0018:ffffc90000a189e0 EFLAGS: 00010246 RAX: ffffffff8b751881 RBX: 0000000000000000 RCX: ffff88801d6f3c00 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: dffffc0000000000 R08: ffffffff8b750f7d R09: ffffffff8b750980 R10: 0000000000000003 R11: ffff88801d6f3c00 R12: ffff888077842500 R13: ffff88801f7b3800 R14: ffff8880778429d0 R15: ffff888077840d80 FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000400000007000 CR3: 0000000077d88000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ieee80211_beacon_get_tim+0xb4/0x320 net/mac80211/tx.c:5596 ieee80211_beacon_get include/net/mac80211.h:5641 [inline] mac80211_hwsim_beacon_tx+0x39d/0x850 drivers/net/wireless/virtual/mac80211_hwsim.c:2311 __iterate_interfaces+0x297/0x570 net/mac80211/util.c:760 ieee80211_iterate_active_interfaces_atomic+0xd8/0x170 net/mac80211/util.c:796 mac80211_hwsim_beacon+0xd4/0x1f0 drivers/net/wireless/virtual/mac80211_hwsim.c:2345 __run_hrtimer kernel/time/hrtimer.c:1801 [inline] __hrtimer_run_queues+0x59b/0xd30 kernel/time/hrtimer.c:1865 hrtimer_run_softirq+0x19a/0x2c0 kernel/time/hrtimer.c:1882 handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561 __do_softirq kernel/softirq.c:595 [inline] invoke_softirq kernel/softirq.c:435 [inline] __irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662 irq_exit_rcu+0x9/0x30 kernel/softirq.c:678 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0xd8/0x140 kernel/locking/spinlock.c:194 Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 8e 04 29 f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 b3 37 90 f5 65 8b 05 f4 55 06 74 85 c0 74 43 48 c7 04 24 0e 36 RSP: 0018:ffffc90000a0f940 EFLAGS: 00000206 RAX: aec21a97a183b000 RBX: 1ffff92000141f2c RCX: ffffffff819b5d0a RDX: dffffc0000000000 RSI: ffffffff8c0aa020 RDI: 0000000000000001 RBP: ffffc90000a0f9d8 R08: ffffffff9431892f R09: 1ffffffff2863125 R10: dffffc0000000000 R11: fffffbfff2863126 R12: dffffc0000000000 R13: 1ffff92000141f28 R14: ffffc90000a0f960 R15: 0000000000000246 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] class_spinlock_irqsave_destructor include/linux/spinlock.h:585 [inline] snd_rawmidi_transmit+0xb4/0xf0 sound/core/rawmidi.c:1493 snd_vmidi_output_work+0x1e1/0x470 sound/core/seq/seq_virmidi.c:151 process_one_work kernel/workqueue.c:3236 [inline] process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3317 worker_thread+0x870/0xd30 kernel/workqueue.c:3398 kthread+0x7a9/0x920 kernel/kthread.c:464 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 ---------------- Code disassembly (best guess): 0: 9c pushf 1: 8f 44 24 20 pop 0x20(%rsp) 5: 42 80 3c 23 00 cmpb $0x0,(%rbx,%r12,1) a: 74 08 je 0x14 c: 4c 89 f7 mov %r14,%rdi f: e8 8e 04 29 f6 call 0xf62904a2 14: f6 44 24 21 02 testb $0x2,0x21(%rsp) 19: 75 52 jne 0x6d 1b: 41 f7 c7 00 02 00 00 test $0x200,%r15d 22: 74 01 je 0x25 24: fb sti 25: bf 01 00 00 00 mov $0x1,%edi * 2a: e8 b3 37 90 f5 call 0xf59037e2 <-- trapping instruction 2f: 65 8b 05 f4 55 06 74 mov %gs:0x740655f4(%rip),%eax # 0x7406562a 36: 85 c0 test %eax,%eax 38: 74 43 je 0x7d 3a: 48 rex.W 3b: c7 .byte 0xc7 3c: 04 24 add $0x24,%al 3e: 0e (bad) 3f: 36 ss