------------[ cut here ]------------ WARNING: CPU: 0 PID: 15551 at net/mac80211/tx.c:4961 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4961 [inline] WARNING: CPU: 0 PID: 15551 at net/mac80211/tx.c:4961 __ieee80211_beacon_get+0xf78/0x12fc net/mac80211/tx.c:5362 Modules linked in: CPU: 0 PID: 15551 Comm: syz.7.2756 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026 pstate: 42400005 (nZcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4961 [inline] pc : __ieee80211_beacon_get+0xf78/0x12fc net/mac80211/tx.c:5362 lr : __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4961 [inline] lr : __ieee80211_beacon_get+0xf78/0x12fc net/mac80211/tx.c:5362 sp : ffff800008007ae0 x29: ffff800008007b20 x28: ffff0000e5038e80 x27: ffffffffffffe520 x26: 00000000ffffffff x25: ffff0000f1f0b800 x24: ffff0000d0d41658 x23: dfff800000000000 x22: ffff800008007b8c x21: ffff0000f7762228 x20: 0000000000000000 x19: ffff0000f7762760 x18: 0000000048050c4b x17: 00000000ffff0000 x16: ffff8000082dbd50 x15: 0000000000000000 x14: 0000000000000007 x13: 0000000000ff0100 x12: ffff800017c7de68 x11: ff00800011471fc4 x10: 0000000000000000 x9 : ffff800011471fc4 x8 : ffff0000cb081c00 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff8000114712a0 x2 : 000000000000000a x1 : 0000000000000000 x0 : 0000000000000000 Call trace: __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4961 [inline] __ieee80211_beacon_get+0xf78/0x12fc net/mac80211/tx.c:5362 ieee80211_beacon_get_tim+0x70/0x44c net/mac80211/tx.c:5489 ieee80211_beacon_get include/net/mac80211.h:5335 [inline] mac80211_hwsim_beacon_tx+0x1e4/0x8fc drivers/net/wireless/mac80211_hwsim.c:2091 __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:2147 __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+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/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:581 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+0x7c/0x3a0 mm/page_alloc.c:3509 free_the_page mm/page_alloc.c:781 [inline] __free_pages+0x1a0/0x1cc mm/page_alloc.c:5747 free_pages+0xa0/0xb8 mm/page_alloc.c:5758 tlb_batch_list_free mm/mmu_gather.c:76 [inline] tlb_finish_mmu+0x134/0x228 mm/mmu_gather.c:397 exit_mmap+0x2a8/0x944 mm/mmap.c:3262 __mmput+0xe8/0x38c kernel/fork.c:1210 mmput+0x70/0xa8 kernel/fork.c:1232 exit_mm+0x20c/0x290 kernel/exit.c:572 do_exit+0x4d0/0x19ac kernel/exit.c:874 do_group_exit+0x198/0x238 kernel/exit.c:1030 get_signal+0x11f4/0x133c kernel/signal.c:2880 do_signal arch/arm64/kernel/signal.c:1095 [inline] do_notify_resume+0x364/0x2c84 arch/arm64/kernel/signal.c:1148 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+0x98/0x128 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: 224343 hardirqs last enabled at (224342): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (224342): [] _raw_spin_unlock_irqrestore+0x48/0xac kernel/locking/spinlock.c:194 hardirqs last disabled at (224343): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (222596): [] softirq_handle_end kernel/softirq.c:439 [inline] softirqs last enabled at (222596): [] handle_softirqs+0xb1c/0xc90 kernel/softirq.c:624 softirqs last disabled at (224313): [] __do_softirq+0x14/0x20 kernel/softirq.c:630 ---[ end trace 0000000000000000 ]---