------------[ cut here ]------------ WARNING: CPU: 0 PID: 7858 at net/mac80211/tx.c:4944 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4944 [inline] WARNING: CPU: 0 PID: 7858 at net/mac80211/tx.c:4944 __ieee80211_beacon_get+0x148c/0x19cc net/mac80211/tx.c:5265 Modules linked in: CPU: 0 PID: 7858 Comm: syz.0.954 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 pstate: 42400005 (nZcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4944 [inline] pc : __ieee80211_beacon_get+0x148c/0x19cc net/mac80211/tx.c:5265 lr : __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4944 [inline] lr : __ieee80211_beacon_get+0x148c/0x19cc net/mac80211/tx.c:5265 sp : ffff800008007920 x29: ffff800008007ad0 x28: ffff800008007b3c x27: ffff0000d906c858 x26: ffff0000f5b78ea0 x25: ffff0000d2717e00 x24: ffff0000f6610c80 x23: 0000000000000000 x22: 0000000000000001 x21: ffff700001000f34 x20: ffff0000f6612790 x19: dfff800000000000 x18: 0000000000000000 x17: ffff80018a6a7000 x16: ffff8000082d10fc x15: 0000000000000000 x14: 0000000000000007 x13: 0000000000ff0100 x12: 0000000000ff0100 x11: ff00800011252b54 x10: 0000000000000000 x9 : ffff800011252b54 x8 : ffff0000c7598000 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff800011251970 x2 : 000000000000000a x1 : 0000000000000000 x0 : 0000000000000000 Call trace: __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4944 [inline] __ieee80211_beacon_get+0x148c/0x19cc net/mac80211/tx.c:5265 ieee80211_beacon_get_tim+0x68/0x444 net/mac80211/tx.c:5352 ieee80211_beacon_get include/net/mac80211.h:5264 [inline] mac80211_hwsim_beacon_tx+0x1e8/0x914 drivers/net/wireless/mac80211_hwsim.c:2091 __iterate_interfaces+0x204/0x484 net/mac80211/util.c:788 ieee80211_iterate_active_interfaces_atomic+0xd4/0x180 net/mac80211/util.c:824 mac80211_hwsim_beacon+0xc8/0x1b8 drivers/net/wireless/mac80211_hwsim.c:2147 __run_hrtimer kernel/time/hrtimer.c:1747 [inline] __hrtimer_run_queues+0x44c/0xc64 kernel/time/hrtimer.c:1811 hrtimer_run_softirq+0x160/0x400 kernel/time/hrtimer.c:1828 handle_softirqs+0x318/0xc6c kernel/softirq.c:596 __do_softirq+0x14/0x20 kernel/softirq.c:630 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80 call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:897 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:85 invoke_softirq kernel/softirq.c:477 [inline] __irq_exit_rcu+0x23c/0x43c kernel/softirq.c:679 irq_exit_rcu+0x14/0x84 kernel/softirq.c:691 __el1_irq arch/arm64/kernel/entry-common.c:472 [inline] el1_interrupt+0x38/0x54 arch/arm64/kernel/entry-common.c:486 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:491 el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:581 arch_local_irq_restore arch/arm64/include/asm/irqflags.h:122 [inline] lock_acquire+0x24c/0x644 kernel/locking/lockdep.c:5665 rcu_lock_acquire+0x44/0x54 include/linux/rcupdate.h:350 rcu_read_lock include/linux/rcupdate.h:791 [inline] page_ext_get+0x2c/0x2c4 mm/page_ext.c:157 page_table_check_clear+0x94/0x410 mm/page_table_check.c:71 __page_table_check_pte_clear+0x7c/0x9c mm/page_table_check.c:168 page_table_check_pte_clear include/linux/page_table_check.h:55 [inline] ptep_get_and_clear arch/arm64/include/asm/pgtable.h:946 [inline] ptep_get_and_clear_full include/linux/pgtable.h:429 [inline] zap_pte_range mm/memory.c:1435 [inline] zap_pmd_range mm/memory.c:1574 [inline] zap_pud_range mm/memory.c:1603 [inline] zap_p4d_range mm/memory.c:1624 [inline] unmap_page_range+0x18f4/0x1dd0 mm/memory.c:1645 unmap_single_vma mm/memory.c:1691 [inline] unmap_vmas+0x234/0x348 mm/memory.c:1730 exit_mmap+0x154/0x934 mm/mmap.c:3250 __mmput+0xec/0x39c kernel/fork.c:1200 mmput+0x70/0xac kernel/fork.c:1222 exit_mm+0x140/0x234 kernel/exit.c:565 do_exit+0x4cc/0x19a8 kernel/exit.c:867 do_group_exit+0x194/0x22c kernel/exit.c:1022 get_signal+0x11d0/0x1310 kernel/signal.c:2871 do_signal arch/arm64/kernel/signal.c:1081 [inline] do_notify_resume+0x34c/0x2b28 arch/arm64/kernel/signal.c:1134 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x98/0x138 arch/arm64/kernel/entry-common.c:638 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 irq event stamp: 48679 hardirqs last enabled at (48678): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (48678): [] _raw_spin_unlock_irqrestore+0x48/0xac kernel/locking/spinlock.c:194 hardirqs last disabled at (48679): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (42124): [] sock_orphan include/net/sock.h:2191 [inline] softirqs last enabled at (42124): [] unix_release_sock+0x3a4/0xc24 net/unix/af_unix.c:598 softirqs last disabled at (48675): [] __do_softirq+0x14/0x20 kernel/softirq.c:630 ---[ end trace 0000000000000000 ]--- vkms_vblank_simulate: vblank timer overrun