------------[ cut here ]------------ WARNING: CPU: 0 PID: 4547 at net/mac80211/tx.c:4851 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4851 [inline] WARNING: CPU: 0 PID: 4547 at net/mac80211/tx.c:4851 __ieee80211_beacon_get+0x12ec/0x19dc net/mac80211/tx.c:5075 Modules linked in: CPU: 0 PID: 4547 Comm: syz.3.148 Not tainted 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 42400005 (nZcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4851 [inline] pc : __ieee80211_beacon_get+0x12ec/0x19dc net/mac80211/tx.c:5075 lr : __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4851 [inline] lr : __ieee80211_beacon_get+0x12ec/0x19dc net/mac80211/tx.c:5075 sp : ffff800008007800 x29: ffff800008007a10 x28: dfff800000000000 x27: ffff800008007880 x26: ffff0000d5668dc0 x25: ffff700001000f10 x24: ffff0000eb570c80 x23: ffff800008007970 x22: ffff800008007a70 x21: 0000000000000000 x20: ffff0000dd477200 x19: ffff0000eb572298 x18: 0000000000000100 x17: 0000000000000000 x16: ffff8000082bf708 x15: 0000000000000007 x14: 0000000000ff0100 x13: ffffffffffffffff x12: 0000000000ff0100 x11: 0000000000000100 x10: 0000000000000000 x9 : ffff800010b7fc58 x8 : ffff0000c7bf0000 x7 : ffff800010b88bd4 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000002 x2 : 0000000000000008 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4851 [inline] __ieee80211_beacon_get+0x12ec/0x19dc net/mac80211/tx.c:5075 ieee80211_beacon_get_tim+0x5c/0x790 net/mac80211/tx.c:5194 ieee80211_beacon_get include/net/mac80211.h:4981 [inline] mac80211_hwsim_beacon_tx+0x10c/0x7ac drivers/net/wireless/mac80211_hwsim.c:1812 __iterate_interfaces+0x204/0x484 net/mac80211/util.c:793 ieee80211_iterate_active_interfaces_atomic+0xd4/0x180 net/mac80211/util.c:829 mac80211_hwsim_beacon+0x90/0x174 drivers/net/wireless/mac80211_hwsim.c:1865 __run_hrtimer kernel/time/hrtimer.c:1690 [inline] __hrtimer_run_queues+0x428/0xb6c kernel/time/hrtimer.c:1754 hrtimer_run_softirq+0x160/0x400 kernel/time/hrtimer.c:1771 handle_softirqs+0x344/0xbf0 kernel/softirq.c:576 __do_softirq kernel/softirq.c:610 [inline] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline] invoke_softirq kernel/softirq.c:457 [inline] __irq_exit_rcu+0x240/0x440 kernel/softirq.c:659 irq_exit+0x14/0x88 kernel/softirq.c:683 handle_domain_irq+0x14c/0x1fc kernel/irq/irqdesc.c:711 gic_handle_irq+0x78/0x1c8 drivers/irqchip/irq-gic-v3.c:765 call_on_irq_stack+0x24/0x30 arch/arm64/kernel/entry.S:855 do_interrupt_handler+0x6c/0x88 arch/arm64/kernel/entry-common.c:267 el1_interrupt+0x30/0x58 arch/arm64/kernel/entry-common.c:454 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:470 el1h_64_irq+0x78/0x7c arch/arm64/kernel/entry.S:522 arch_local_irq_restore arch/arm64/include/asm/irqflags.h:122 [inline] queue_work_on+0x110/0x17c kernel/workqueue.c:1563 queue_work include/linux/workqueue.h:512 [inline] snd_virmidi_output_trigger+0xd4/0x11c sound/core/seq/seq_virmidi.c:178 snd_rawmidi_output_trigger sound/core/rawmidi.c:186 [inline] snd_rawmidi_kernel_write1+0x568/0x678 sound/core/rawmidi.c:1502 snd_rawmidi_write+0x45c/0x8fc sound/core/rawmidi.c:1555 do_loop_readv_writev fs/read_write.c:-1 [inline] do_iter_write+0x348/0x670 fs/read_write.c:857 vfs_writev fs/read_write.c:928 [inline] do_writev+0x1e0/0x380 fs/read_write.c:971 __do_sys_writev fs/read_write.c:1044 [inline] __se_sys_writev fs/read_write.c:1041 [inline] __arm64_sys_writev+0x80/0x94 fs/read_write.c:1041 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 irq event stamp: 183833 hardirqs last enabled at (183832): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] hardirqs last enabled at (183832): [] _raw_spin_unlock_irqrestore+0xa8/0x14c kernel/locking/spinlock.c:194 hardirqs last disabled at (183833): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396 softirqs last enabled at (180704): [] softirq_handle_end kernel/softirq.c:419 [inline] softirqs last enabled at (180704): [] handle_softirqs+0xa4c/0xbf0 kernel/softirq.c:604 softirqs last disabled at (183721): [] __do_softirq kernel/softirq.c:610 [inline] softirqs last disabled at (183721): [] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline] softirqs last disabled at (183721): [] invoke_softirq kernel/softirq.c:457 [inline] softirqs last disabled at (183721): [] __irq_exit_rcu+0x240/0x440 kernel/softirq.c:659 ---[ end trace 0f29c769a11bfd7f ]---