------------[ cut here ]------------ WARNING: CPU: 1 PID: 0 at net/mac80211/tx.c:5024 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5024 [inline] WARNING: CPU: 1 PID: 0 at net/mac80211/tx.c:5024 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5019 [inline] WARNING: CPU: 1 PID: 0 at net/mac80211/tx.c:5024 __ieee80211_beacon_get+0x14f4/0x1720 net/mac80211/tx.c:5453 Modules linked in: CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted 6.16.0-rc2-syzkaller-00087-g24770983ccfe #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5024 [inline] RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5019 [inline] RIP: 0010:__ieee80211_beacon_get+0x14f4/0x1720 net/mac80211/tx.c:5453 Code: 24 89 df 89 ee e8 bc 6a bf f6 40 38 eb 72 a2 e8 92 70 bf f6 4c 89 e7 e8 5a 4b 1a f7 45 31 e4 e9 9b fe ff ff e8 7d 70 bf f6 90 <0f> 0b 90 e9 3e f6 ff ff 48 89 c6 48 c7 c7 a0 24 75 90 48 89 44 24 vkms_vblank_simulate: vblank timer overrun RSP: 0018:ffffc90000a08b70 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff8880546f69d0 RCX: ffffffff8afca141 RDX: ffff88801e29da00 RSI: ffffffff8afcab03 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffffc90000a08c28 R13: ffff888031c27000 R14: 0000000000000041 R15: ffff8880546f6500 FS: 0000000000000000(0000) GS:ffff88812485a000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c27eb6a CR3: 000000005bf38000 CR4: 0000000000350ef0 Call Trace: ieee80211_beacon_get_tim+0xa6/0x280 net/mac80211/tx.c:5580 ieee80211_beacon_get include/net/mac80211.h:5638 [inline] mac80211_hwsim_beacon_tx+0x4d9/0xa40 drivers/net/wireless/virtual/mac80211_hwsim.c:2319 __iterate_interfaces+0x2e5/0x650 net/mac80211/util.c:761 ieee80211_iterate_active_interfaces_atomic+0x71/0x1b0 net/mac80211/util.c:797 mac80211_hwsim_beacon+0x105/0x200 drivers/net/wireless/virtual/mac80211_hwsim.c:2353 __run_hrtimer kernel/time/hrtimer.c:1761 [inline] __hrtimer_run_queues+0x202/0xad0 kernel/time/hrtimer.c:1825 hrtimer_run_softirq+0x17d/0x350 kernel/time/hrtimer.c:1842 handle_softirqs+0x219/0x8e0 kernel/softirq.c:579 __do_softirq kernel/softirq.c:613 [inline] invoke_softirq kernel/softirq.c:453 [inline] __irq_exit_rcu+0x109/0x170 kernel/softirq.c:680 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline] sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1050 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:pv_native_safe_halt+0xf/0x20 arch/x86/kernel/paravirt.c:82 Code: ab 74 02 e9 ae c9 92 f5 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa eb 07 0f 00 2d a3 80 2c 00 fb f4 87 c9 92 f5 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90 RSP: 0018:ffffc90000197df8 EFLAGS: 00000282 RAX: 0000000000198c97 RBX: 0000000000000001 RCX: ffffffff8b7d8c19 RDX: 0000000000000000 RSI: ffffffff8de159c8 RDI: ffffffff8c156620 RBP: ffffed1003c53b40 R08: 0000000000000001 R09: ffffed10170a6645 R10: ffff8880b853322b R11: 0000000000000001 R12: 0000000000000001 R13: ffff88801e29da00 R14: ffffffff90a83250 R15: 0000000000000000 arch_safe_halt arch/x86/include/asm/paravirt.h:107 [inline] default_idle+0x13/0x20 arch/x86/kernel/process.c:749 default_idle_call+0x6d/0xb0 kernel/sched/idle.c:117 cpuidle_idle_call kernel/sched/idle.c:185 [inline] do_idle+0x391/0x510 kernel/sched/idle.c:325 cpu_startup_entry+0x4f/0x60 kernel/sched/idle.c:423 start_secondary+0x21d/0x2b0 arch/x86/kernel/smpboot.c:315 common_startup_64+0x13e/0x148 ---------------- Code disassembly (best guess): 0: ab stos %eax,%es:(%rdi) 1: 74 02 je 0x5 3: e9 ae c9 92 f5 jmp 0xf592c9b6 8: 0f 1f 00 nopl (%rax) b: 90 nop c: 90 nop d: 90 nop e: 90 nop f: 90 nop 10: 90 nop 11: 90 nop 12: 90 nop 13: 90 nop 14: 90 nop 15: 90 nop 16: 90 nop 17: 90 nop 18: 90 nop 19: 90 nop 1a: 90 nop 1b: f3 0f 1e fa endbr64 1f: eb 07 jmp 0x28 21: 0f 00 2d a3 80 2c 00 verw 0x2c80a3(%rip) # 0x2c80cb 28: fb sti 29: f4 hlt * 2a: e9 87 c9 92 f5 jmp 0xf592c9b6 <-- trapping instruction 2f: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1) 36: 00 00 00 39: 66 90 xchg %ax,%ax 3b: 90 nop 3c: 90 nop 3d: 90 nop 3e: 90 nop 3f: 90 nop