===================================================== BUG: KMSAN: uninit-value in ieee80211_ac_from_tid net/mac80211/ieee80211_i.h:2034 [inline] BUG: KMSAN: uninit-value in ieee80211_sta_tx_wmm_ac_notify net/mac80211/mlme.c:2490 [inline] BUG: KMSAN: uninit-value in ieee80211_sta_tx_notify+0x4be/0xda0 net/mac80211/mlme.c:2522 CPU: 1 PID: 8613 Comm: kworker/u4:1 Not tainted 5.9.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: phy18 ieee80211_beacon_connection_loss_work Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x21c/0x280 lib/dump_stack.c:118 kmsan_report+0xf7/0x1e0 mm/kmsan/kmsan_report.c:122 __msan_warning+0x58/0xa0 mm/kmsan/kmsan_instr.c:201 ieee80211_ac_from_tid net/mac80211/ieee80211_i.h:2034 [inline] ieee80211_sta_tx_wmm_ac_notify net/mac80211/mlme.c:2490 [inline] ieee80211_sta_tx_notify+0x4be/0xda0 net/mac80211/mlme.c:2522 __ieee80211_tx_status+0x2d3b/0x4450 net/mac80211/status.c:1013 ieee80211_tx_status+0x223/0x270 net/mac80211/status.c:1129 ieee80211_tasklet_handler+0x34e/0x3c0 net/mac80211/main.c:239 tasklet_action_common+0x416/0x6a0 kernel/softirq.c:562 tasklet_action+0x30/0x40 kernel/softirq.c:580 __do_softirq+0x2ea/0x7f5 kernel/softirq.c:299 asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:706 __run_on_irqstack arch/x86/include/asm/irq_stack.h:23 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:50 [inline] do_softirq_own_stack+0x7c/0xa0 arch/x86/kernel/irq_64.c:77 do_softirq kernel/softirq.c:344 [inline] __local_bh_enable_ip+0x184/0x1d0 kernel/softirq.c:196 local_bh_enable+0x36/0x40 include/linux/bottom_half.h:32 __ieee80211_tx_skb_tid_band+0x28e/0x390 net/mac80211/tx.c:5352 ieee80211_tx_skb_tid net/mac80211/ieee80211_i.h:2003 [inline] ieee80211_tx_skb net/mac80211/ieee80211_i.h:2012 [inline] ieee80211_send_nullfunc+0x59a/0x6d0 net/mac80211/mlme.c:1095 ieee80211_mgd_probe_ap_send+0x897/0xb40 net/mac80211/mlme.c:2593 ieee80211_mgd_probe_ap+0x6b3/0x760 net/mac80211/mlme.c:2669 ieee80211_beacon_connection_loss_work+0x156/0x270 net/mac80211/mlme.c:2788 process_one_work+0x1688/0x2140 kernel/workqueue.c:2269 worker_thread+0x10bc/0x2730 kernel/workqueue.c:2415 kthread+0x551/0x590 kernel/kthread.c:293 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 Uninit was created at: kmsan_save_stack_with_flags+0x3c/0x90 mm/kmsan/kmsan.c:143 kmsan_internal_alloc_meta_for_pages mm/kmsan/kmsan_shadow.c:268 [inline] kmsan_alloc_page+0xc5/0x1a0 mm/kmsan/kmsan_shadow.c:292 __alloc_pages_nodemask+0xf34/0x1120 mm/page_alloc.c:4927 __alloc_pages include/linux/gfp.h:509 [inline] __alloc_pages_node include/linux/gfp.h:522 [inline] alloc_pages_node include/linux/gfp.h:536 [inline] __page_frag_cache_refill mm/page_alloc.c:5002 [inline] page_frag_alloc+0x35b/0x880 mm/page_alloc.c:5032 __netdev_alloc_skb+0xc3d/0xc90 net/core/skbuff.c:456 netdev_alloc_skb include/linux/skbuff.h:2821 [inline] dev_alloc_skb include/linux/skbuff.h:2834 [inline] __ieee80211_beacon_get+0x37e3/0x4df0 net/mac80211/tx.c:4819 ieee80211_beacon_get_tim+0x109/0x800 net/mac80211/tx.c:4933 ieee80211_beacon_get include/net/mac80211.h:4845 [inline] mac80211_hwsim_beacon_tx+0x1c3/0xb80 drivers/net/wireless/mac80211_hwsim.c:1676 __iterate_interfaces net/mac80211/util.c:737 [inline] ieee80211_iterate_active_interfaces_atomic+0x40a/0x610 net/mac80211/util.c:773 mac80211_hwsim_beacon+0x11d/0x2e0 drivers/net/wireless/mac80211_hwsim.c:1717 __run_hrtimer+0x7cd/0xf00 kernel/time/hrtimer.c:1524 __hrtimer_run_queues kernel/time/hrtimer.c:1588 [inline] hrtimer_run_softirq+0x3bf/0x690 kernel/time/hrtimer.c:1605 __do_softirq+0x2ea/0x7f5 kernel/softirq.c:299 =====================================================