------------[ cut here ]------------ WARNING: CPU: 0 PID: 8042 at net/mac80211/tx.c:4981 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4981 [inline] WARNING: CPU: 0 PID: 8042 at net/mac80211/tx.c:4981 __ieee80211_beacon_get+0xf78/0x12fc net/mac80211/tx.c:5382 Modules linked in: CPU: 0 PID: 8042 Comm: syz.2.743 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026 pstate: 42400005 (nZcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4981 [inline] pc : __ieee80211_beacon_get+0xf78/0x12fc net/mac80211/tx.c:5382 lr : __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4981 [inline] lr : __ieee80211_beacon_get+0xf78/0x12fc net/mac80211/tx.c:5382 sp : ffff800008007ae0 x29: ffff800008007b20 x28: ffff0000f5428e80 x27: ffffffffffffe580 x26: 00000000ffffffff x25: ffff0000f7950800 x24: ffff0000ce26ae58 x23: dfff800000000000 x22: ffff800008007b8c x21: ffff0000cb1e6208 x20: 0000000000000000 x19: ffff0000cb1e6740 x18: 1fffe00033c2177e x17: 00000000ffff0000 x16: ffff8000082dce18 x15: 0000000000000000 x14: 0000000000000007 x13: 0000000000ff0100 x12: ffff800018cb27e8 x11: ff0080001146c3d8 x10: 0000000000000000 x9 : ffff80001146c3d8 x8 : ffff0000cf640000 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff80001146b6b4 x2 : 000000000000000a x1 : 0000000000000000 x0 : 0000000000000000 Call trace: __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4981 [inline] __ieee80211_beacon_get+0xf78/0x12fc net/mac80211/tx.c:5382 ieee80211_beacon_get_tim+0x70/0x44c net/mac80211/tx.c:5509 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 __do_softirq+0x14/0x20 kernel/softirq.c:630 ____do_softirq+0x10/0x1c arch/arm64/kernel/irq.c:80 call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:901 do_softirq_own_stack+0x1c/0x28 arch/arm64/kernel/irq.c:85 invoke_softirq kernel/softirq.c:477 [inline] __irq_exit_rcu+0x23c/0x430 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:585 arch_local_irq_restore arch/arm64/include/asm/irqflags.h:122 [inline] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] _raw_spin_unlock_irqrestore+0x58/0xac kernel/locking/spinlock.c:194 __debug_check_no_obj_freed lib/debugobjects.c:1054 [inline] debug_check_no_obj_freed+0x39c/0x454 lib/debugobjects.c:1075 free_pages_prepare mm/page_alloc.c:1493 [inline] free_pcp_prepare mm/page_alloc.c:1537 [inline] free_unref_page_prepare+0x740/0xb24 mm/page_alloc.c:3414 free_unref_page_list+0xd8/0x8dc mm/page_alloc.c:3555 release_pages+0xdac/0xfdc mm/swap.c:1035 __pagevec_release+0x84/0xf8 mm/swap.c:1055 pagevec_release include/linux/pagevec.h:71 [inline] folio_batch_release include/linux/pagevec.h:135 [inline] shmem_undo_range+0x494/0x14a8 mm/shmem.c:955 shmem_truncate_range mm/shmem.c:1071 [inline] shmem_evict_inode+0x200/0x8b0 mm/shmem.c:1180 evict+0x3d8/0x81c fs/inode.c:703 iput_final fs/inode.c:1832 [inline] iput+0x728/0x7e8 fs/inode.c:1858 dentry_unlink_inode+0x360/0x438 fs/dcache.c:405 __dentry_kill+0x318/0x590 fs/dcache.c:611 dentry_kill+0xcc/0x24c fs/dcache.c:-1 dput+0x228/0x444 fs/dcache.c:918 __fput+0x480/0x7b0 fs/file_table.c:328 ____fput+0x20/0x30 fs/file_table.c:348 task_work_run+0x1f4/0x280 kernel/task_work.c:203 exit_task_work include/linux/task_work.h:39 [inline] do_exit+0x54c/0x19ac kernel/exit.c:887 do_group_exit+0x198/0x238 kernel/exit.c:1030 get_signal+0x11f4/0x133c kernel/signal.c:2884 do_signal arch/arm64/kernel/signal.c:1110 [inline] do_notify_resume+0x364/0x2c84 arch/arm64/kernel/signal.c:1163 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+0x9c/0x12c 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:589 irq event stamp: 19045 hardirqs last enabled at (19044): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (19044): [] _raw_spin_unlock_irqrestore+0x48/0xac kernel/locking/spinlock.c:194 hardirqs last disabled at (19045): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (12696): [] softirq_handle_end kernel/softirq.c:439 [inline] softirqs last enabled at (12696): [] handle_softirqs+0xb1c/0xc90 kernel/softirq.c:624 softirqs last disabled at (18983): [] __do_softirq+0x14/0x20 kernel/softirq.c:630 ---[ end trace 0000000000000000 ]---