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BUG: KMSAN: uninit-value in skb_trim+0x1f8/0x280 net/core/skbuff.c:2095
 skb_trim+0x1f8/0x280 net/core/skbuff.c:2095
 ath9k_htc_rx_msg+0x63c/0xbc0 drivers/net/wireless/ath/ath9k/htc_hst.c:460
 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:1988
 call_timer_fn+0x81/0x540 kernel/time/timer.c:1421
 expire_timers+0x2f5/0x6d0 kernel/time/timer.c:1466
 __run_timers+0x682/0xa80 kernel/time/timer.c:1737
 run_timer_softirq+0x71/0xe0 kernel/time/timer.c:1750
 __do_softirq+0x1ee/0x7c5 kernel/softirq.c:558
 invoke_softirq+0xa4/0x130 kernel/softirq.c:432
 __irq_exit_rcu kernel/softirq.c:637 [inline]
 irq_exit_rcu+0x76/0x130 kernel/softirq.c:649
 sysvec_apic_timer_interrupt+0x9a/0xc0 arch/x86/kernel/apic/apic.c:1097
 asm_sysvec_apic_timer_interrupt+0x12/0x20
 on_stack arch/x86/include/asm/stacktrace.h:58 [inline]
 update_stack_state+0x2c1/0xa60 arch/x86/kernel/unwind_frame.c:218
 unwind_next_frame+0x6d0/0xe50 arch/x86/kernel/unwind_frame.c:304
 arch_stack_walk+0x320/0x3c0 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x117/0x1a0 kernel/stacktrace.c:122
 kmsan_save_stack_with_flags mm/kmsan/core.c:80 [inline]
 kmsan_internal_poison_memory+0x45/0x90 mm/kmsan/core.c:65
 kmsan_slab_free+0xcf/0x130 mm/kmsan/hooks.c:91
 slab_free_hook mm/slub.c:1712 [inline]
 slab_free_freelist_hook+0x24a/0x890 mm/slub.c:1768
 slab_free mm/slub.c:3524 [inline]
 kmem_cache_free+0x2f9/0xab0 mm/slub.c:3541
 locks_free_lock fs/locks.c:307 [inline]
 locks_dispose_list fs/locks.c:319 [inline]
 flock_lock_inode+0x2613/0x3370 fs/locks.c:1046
 locks_remove_flock fs/locks.c:2568 [inline]
 locks_remove_file+0x59a/0x20c0 fs/locks.c:2610
 __fput+0x6ad/0x10a0 fs/file_table.c:309
 ____fput+0x37/0x40 fs/file_table.c:350
 task_work_run+0x154/0x290 kernel/task_work.c:164
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0x345/0x3d0 kernel/entry/common.c:171
 exit_to_user_mode_prepare kernel/entry/common.c:203 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
 syscall_exit_to_user_mode+0x79/0xc0 kernel/entry/common.c:296
 do_syscall_64+0x49/0x90 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Uninit was created at:
 slab_post_alloc_hook mm/slab.h:754 [inline]
 slab_alloc_node mm/slub.c:3231 [inline]
 __kmalloc_node_track_caller+0xde3/0x14f0 mm/slub.c:4962
 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:3107 [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:1988
 call_timer_fn+0x81/0x540 kernel/time/timer.c:1421
 expire_timers+0x2f5/0x6d0 kernel/time/timer.c:1466
 __run_timers+0x682/0xa80 kernel/time/timer.c:1737
 run_timer_softirq+0x71/0xe0 kernel/time/timer.c:1750
 __do_softirq+0x1ee/0x7c5 kernel/softirq.c:558

CPU: 0 PID: 3924 Comm: udevd Not tainted 5.18.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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