===================================================== 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+0xa2/0xc0 arch/x86/kernel/apic/apic.c:1097 asm_sysvec_apic_timer_interrupt+0x12/0x20 kmsan_get_shadow_origin_ptr+0x9/0xf0 mm/kmsan/shadow.c:121 get_shadow_origin_ptr mm/kmsan/instrumentation.c:35 [inline] __msan_metadata_ptr_for_load_8+0x20/0x30 mm/kmsan/instrumentation.c:77 last_frame arch/x86/kernel/unwind_frame.c:82 [inline] is_last_frame arch/x86/kernel/unwind_frame.c:87 [inline] is_last_task_frame arch/x86/kernel/unwind_frame.c:156 [inline] unwind_next_frame+0x156/0xe50 arch/x86/kernel/unwind_frame.c:265 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_alloc+0xdb/0x150 mm/kmsan/hooks.c:69 slab_post_alloc_hook mm/slab.h:754 [inline] slab_alloc_node mm/slub.c:3231 [inline] slab_alloc mm/slub.c:3239 [inline] __kmem_cache_alloc_lru mm/slub.c:3246 [inline] kmem_cache_alloc+0x8d9/0x11a0 mm/slub.c:3256 ext4_es_alloc_extent fs/ext4/extents_status.c:458 [inline] __es_insert_extent+0x1147/0x3020 fs/ext4/extents_status.c:797 ext4_es_insert_extent+0x623/0x62b0 fs/ext4/extents_status.c:855 ext4_ext_put_gap_in_cache fs/ext4/extents.c:2286 [inline] ext4_ext_map_blocks+0x4aff/0x6a00 fs/ext4/extents.c:4186 ext4_map_blocks+0x863/0x3ab0 fs/ext4/inode.c:561 ext4_getblk+0x2dd/0xed0 fs/ext4/inode.c:847 ext4_bread+0xb7/0x430 fs/ext4/inode.c:900 ext4_append+0x2ce/0x700 fs/ext4/namei.c:67 ext4_init_new_dir+0x49b/0x10e0 fs/ext4/namei.c:2893 ext4_mkdir+0x7da/0x1870 fs/ext4/namei.c:2939 vfs_mkdir+0x6d5/0x9c0 fs/namei.c:3931 do_mkdirat+0x3f5/0x8e0 fs/namei.c:3957 __do_sys_mkdirat fs/namei.c:3972 [inline] __se_sys_mkdirat fs/namei.c:3970 [inline] __ia32_sys_mkdirat+0x11a/0x160 fs/namei.c:3970 do_syscall_32_irqs_on arch/x86/entry/common.c:113 [inline] __do_fast_syscall_32+0x96/0xf0 arch/x86/entry/common.c:179 do_fast_syscall_32+0x34/0x70 arch/x86/entry/common.c:204 do_SYSENTER_32+0x1b/0x20 arch/x86/entry/common.c:247 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c 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: 3500 Comm: syz-executor.1 Not tainted 5.18.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 =====================================================