===================================================== BUG: KMSAN: uninit-value in skb_trim+0x1f8/0x280 net/core/skbuff.c:2063 skb_trim+0x1f8/0x280 net/core/skbuff.c:2063 ath9k_htc_rx_msg+0x63c/0xbb0 drivers/net/wireless/ath/ath9k/htc_hst.c:455 ath9k_hif_usb_rx_stream drivers/net/wireless/ath/ath9k/hif_usb.c:654 [inline] ath9k_hif_usb_rx_cb+0x1721/0x1df0 drivers/net/wireless/ath/ath9k/hif_usb.c:687 __usb_hcd_giveback_urb+0x6c6/0x930 drivers/usb/core/hcd.c:1670 usb_hcd_giveback_urb+0x1e2/0x7c0 drivers/usb/core/hcd.c:1747 dummy_timer+0x157a/0x51c0 drivers/usb/gadget/udc/dummy_hcd.c:1987 call_timer_fn+0x81/0x540 kernel/time/timer.c:1421 expire_timers+0x2f5/0x6d0 kernel/time/timer.c:1466 __run_timers+0x66b/0x9f0 kernel/time/timer.c:1734 run_timer_softirq+0x71/0xe0 kernel/time/timer.c:1747 __do_softirq+0x1ee/0x7c5 kernel/softirq.c:558 do_softirq+0x16d/0x220 kernel/softirq.c:459 __local_bh_enable_ip+0xd5/0xe0 kernel/softirq.c:383 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:167 [inline] _raw_spin_unlock_bh+0x4b/0x60 kernel/locking/spinlock.c:210 spin_unlock_bh include/linux/spinlock.h:394 [inline] batadv_nc_purge_paths+0x794/0x840 net/batman-adv/network-coding.c:471 batadv_nc_worker+0xcbe/0x2370 net/batman-adv/network-coding.c:720 process_one_work+0xdb6/0x1820 kernel/workqueue.c:2307 worker_thread+0x10b3/0x21e0 kernel/workqueue.c:2454 kthread+0x3c7/0x500 kernel/kthread.c:377 ret_from_fork+0x1f/0x30 Uninit was created at: slab_post_alloc_hook mm/slab.h:737 [inline] slab_alloc_node mm/slub.c:3244 [inline] __kmalloc_node_track_caller+0xde3/0x14f0 mm/slub.c:4972 kmalloc_reserve net/core/skbuff.c:354 [inline] __alloc_skb+0x545/0xf90 net/core/skbuff.c:426 __netdev_alloc_skb+0x4b9/0x8c0 net/core/skbuff.c:494 __dev_alloc_skb include/linux/skbuff.h:2955 [inline] ath9k_hif_usb_rx_stream drivers/net/wireless/ath/ath9k/hif_usb.c:636 [inline] ath9k_hif_usb_rx_cb+0xead/0x1df0 drivers/net/wireless/ath/ath9k/hif_usb.c:687 __usb_hcd_giveback_urb+0x6c6/0x930 drivers/usb/core/hcd.c:1670 usb_hcd_giveback_urb+0x1e2/0x7c0 drivers/usb/core/hcd.c:1747 dummy_timer+0x157a/0x51c0 drivers/usb/gadget/udc/dummy_hcd.c:1987 call_timer_fn+0x81/0x540 kernel/time/timer.c:1421 expire_timers+0x2f5/0x6d0 kernel/time/timer.c:1466 __run_timers+0x66b/0x9f0 kernel/time/timer.c:1734 run_timer_softirq+0x71/0xe0 kernel/time/timer.c:1747 __do_softirq+0x1ee/0x7c5 kernel/softirq.c:558 CPU: 1 PID: 51 Comm: kworker/u4:2 Not tainted 5.17.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: bat_events batadv_nc_worker =====================================================