------------[ cut here ]------------ WARNING: CPU: 0 PID: 5095 at net/mac80211/tx.c:4961 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4961 [inline] WARNING: CPU: 0 PID: 5095 at net/mac80211/tx.c:4961 __ieee80211_beacon_get+0xf78/0x12fc net/mac80211/tx.c:5362 Modules linked in: CPU: 0 PID: 5095 Comm: syz.0.181 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 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: ffff0000f65c8e80 x27: ffffffffffffe520 x26: 00000000ffffffff x25: ffff0000c4c43800 x24: ffff0000dac2d058 x23: dfff800000000000 x22: ffff800008007b8c x21: ffff0000f6536228 x20: 0000000000000000 x19: ffff0000f6536760 x18: 1fffe00033e7277e x17: 00000000ffff0000 x16: ffff8000082dbd3c x15: 0000000000000000 x14: 0000000000000007 x13: 0000000000ff0100 x12: ffff800017c5d008 x11: ff00800011462380 x10: 0000000000000000 x9 : ffff800011462380 x8 : ffff0000d68cd400 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff80001146165c 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] folio_memcg_lock+0xf8/0x1f8 mm/memcontrol.c:2113 lock_page_memcg+0x48/0x58 mm/memcontrol.c:2137 page_add_file_rmap+0x160/0xc2c mm/rmap.c:1293 do_set_pte+0x348/0x494 mm/memory.c:4422 filemap_map_pages+0x94c/0x1284 mm/filemap.c:3513 do_fault_around mm/memory.c:4598 [inline] do_read_fault mm/memory.c:4624 [inline] do_fault mm/memory.c:4758 [inline] handle_pte_fault mm/memory.c:5029 [inline] __handle_mm_fault mm/memory.c:5171 [inline] handle_mm_fault+0x1cd0/0x3018 mm/memory.c:5292 faultin_page mm/gup.c:1026 [inline] __get_user_pages+0x340/0x770 mm/gup.c:1250 __get_user_pages_locked mm/gup.c:1454 [inline] get_dump_page+0x14c/0x5ac mm/gup.c:1952 dump_user_range+0xe8/0x5c4 fs/coredump.c:975 elf_core_dump+0x2900/0x2e14 fs/binfmt_elf.c:2354 do_coredump+0x10dc/0x1c90 fs/coredump.c:824 get_signal+0xdfc/0x133c kernel/signal.c:2866 do_signal arch/arm64/kernel/signal.c:1095 [inline] do_notify_resume+0x2a8/0x2c84 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_da+0xb4/0x144 arch/arm64/kernel/entry-common.c:516 el0t_64_sync_handler+0x90/0xf0 arch/arm64/kernel/entry-common.c:658 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 irq event stamp: 221445 hardirqs last enabled at (221444): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (221444): [] _raw_spin_unlock_irqrestore+0x48/0xac kernel/locking/spinlock.c:194 hardirqs last disabled at (221445): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (213700): [] softirq_handle_end kernel/softirq.c:439 [inline] softirqs last enabled at (213700): [] handle_softirqs+0xb1c/0xc90 kernel/softirq.c:624 softirqs last disabled at (221409): [] __do_softirq+0x14/0x20 kernel/softirq.c:630 ---[ end trace 0000000000000000 ]---