------------[ cut here ]------------ WARNING: CPU: 0 PID: 15 at net/mac80211/tx.c:4970 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4970 [inline] WARNING: CPU: 0 PID: 15 at net/mac80211/tx.c:4970 __ieee80211_beacon_get+0xf78/0x12fc net/mac80211/tx.c:5371 Modules linked in: CPU: 0 PID: 15 Comm: ksoftirqd/0 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026 pstate: 42400005 (nZcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4970 [inline] pc : __ieee80211_beacon_get+0xf78/0x12fc net/mac80211/tx.c:5371 lr : __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4970 [inline] lr : __ieee80211_beacon_get+0xf78/0x12fc net/mac80211/tx.c:5371 sp : ffff80001dc57880 x29: ffff80001dc578c0 x28: ffff0000cc390e80 x27: ffffffffffffe520 x26: 00000000ffffffff x25: ffff0000f6925c00 x24: ffff0000d6633258 x23: dfff800000000000 x22: ffff80001dc5792c x21: ffff0000f628a228 x20: 0000000000000000 x19: ffff0000f628a760 x18: 1fffe00033c1877e x17: ffff80001641d000 x16: ffff8000082dbe80 x15: 0000000000000000 x14: 0000000000000007 x13: 0000000000ff0100 x12: ffff800018cf9d28 x11: ff00800011497f54 x10: 0000000000000000 x9 : ffff800011497f54 x8 : ffff0000c09b3800 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff800011497230 x2 : 000000000000000a x1 : 0000000000000000 x0 : 0000000000000000 Call trace: __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4970 [inline] __ieee80211_beacon_get+0xf78/0x12fc net/mac80211/tx.c:5371 ieee80211_beacon_get_tim+0x70/0x44c net/mac80211/tx.c:5498 ieee80211_beacon_get include/net/mac80211.h:5338 [inline] mac80211_hwsim_beacon_tx+0x1e4/0x8fc drivers/net/wireless/mac80211_hwsim.c:2097 __iterate_interfaces+0x200/0x47c net/mac80211/util.c:788 ieee80211_iterate_active_interfaces_atomic+0xd4/0x180 net/mac80211/util.c:824 mac80211_hwsim_beacon+0xc8/0x1b0 drivers/net/wireless/mac80211_hwsim.c:2153 __run_hrtimer kernel/time/hrtimer.c:1751 [inline] __hrtimer_run_queues+0x444/0xc58 kernel/time/hrtimer.c:1815 hrtimer_run_softirq+0x164/0x408 kernel/time/hrtimer.c:1832 handle_softirqs+0x318/0xc90 kernel/softirq.c:596 run_ksoftirqd+0x7c/0x2ac kernel/softirq.c:968 smpboot_thread_fn+0x4e8/0x960 kernel/smpboot.c:164 kthread+0x254/0x2e0 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850 irq event stamp: 626029 hardirqs last enabled at (626028): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (626028): [] _raw_spin_unlock_irqrestore+0x48/0xac kernel/locking/spinlock.c:194 hardirqs last disabled at (626029): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (625998): [] softirq_handle_end kernel/softirq.c:439 [inline] softirqs last enabled at (625998): [] handle_softirqs+0xb1c/0xc90 kernel/softirq.c:624 softirqs last disabled at (626003): [] run_ksoftirqd+0x7c/0x2ac kernel/softirq.c:968 ---[ end trace 0000000000000000 ]--- vkms_vblank_simulate: vblank timer overrun