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BUG: KMSAN: uninit-value in skb_trim+0x1f2/0x280 net/core/skbuff.c:1911
CPU: 1 PID: 4708 Comm: systemd-udevd Not tainted 5.10.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __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:118
 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197
 skb_trim+0x1f2/0x280 net/core/skbuff.c:1911
 ath9k_htc_rx_msg+0x5f7/0x1f40 drivers/net/wireless/ath/ath9k/htc_hst.c:455
 ath9k_hif_usb_rx_stream drivers/net/wireless/ath/ath9k/hif_usb.c:647 [inline]
 ath9k_hif_usb_rx_cb+0x1841/0x1d10 drivers/net/wireless/ath/ath9k/hif_usb.c:680
 __usb_hcd_giveback_urb+0x687/0x870 drivers/usb/core/hcd.c:1650
 usb_hcd_giveback_urb+0x1cb/0x730 drivers/usb/core/hcd.c:1716
 dummy_timer+0xd57/0x71c0 drivers/usb/gadget/udc/dummy_hcd.c:1967
 call_timer_fn+0x7d/0x450 kernel/time/timer.c:1410
 expire_timers+0x318/0x6c0 kernel/time/timer.c:1455
 __run_timers+0x624/0x9e0 kernel/time/timer.c:1747
 run_timer_softirq+0x2d/0x50 kernel/time/timer.c:1760
 __do_softirq+0x1a9/0x6fa kernel/softirq.c:298
 asm_call_irq_on_stack+0xf/0x20
 </IRQ>
 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline]
 run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline]
 do_softirq_own_stack+0x6e/0x90 arch/x86/kernel/irq_64.c:77
 invoke_softirq kernel/softirq.c:393 [inline]
 __irq_exit_rcu+0x226/0x270 kernel/softirq.c:423
 irq_exit_rcu+0xe/0x10 kernel/softirq.c:435
 sysvec_apic_timer_interrupt+0x106/0x130 arch/x86/kernel/apic/apic.c:1091
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:metadata_is_contiguous+0x1a0/0x1b0 mm/kmsan/kmsan.c:493
Code: 41 b7 01 eb 1d 48 89 c3 8b 30 45 31 ff 48 c7 c7 3e 2e 3a 90 31 c0 e8 92 36 53 ff 8b 3b e8 28 24 00 00 44 89 f8 48 83 c4 28 5b <41> 5c 41 5d 41 5e 41 5f 5d c3 66 0f 1f 44 00 00 55 48 89 e5 41 57
RSP: 0018:ffff888115b738a0 EFLAGS: 00000282
RAX: 0000000000000001 RBX: 0000000000000008 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888115b73ae8
RBP: ffff888115b738c0 R08: ffffffff85730eea R09: ffff88813fffa000
R10: 0000000000000003 R11: ffff8881128f0000 R12: 0000000000000008
R13: ffff888115b73ad0 R14: ffffffff9037bdac R15: 0000000000000001
 kmsan_get_shadow_origin_ptr+0x61/0xb0 mm/kmsan/kmsan_shadow.c:144
 __msan_metadata_ptr_for_load_8+0x10/0x20 mm/kmsan/kmsan_instr.c:55
 tomoyo_compare_name_union security/tomoyo/file.c:260 [inline]
 tomoyo_check_path_acl+0x125/0x360 security/tomoyo/file.c:260
 tomoyo_check_acl+0x249/0x5d0 security/tomoyo/domain.c:175
 tomoyo_path_permission security/tomoyo/file.c:586 [inline]
 tomoyo_path_perm+0x83f/0xc60 security/tomoyo/file.c:838
 tomoyo_inode_getattr+0x54/0x60 security/tomoyo/tomoyo.c:123
 security_inode_getattr+0x144/0x280 security/security.c:1279
 vfs_getattr fs/stat.c:121 [inline]
 vfs_statx+0x29c/0x890 fs/stat.c:189
 vfs_fstatat fs/stat.c:207 [inline]
 vfs_lstat include/linux/fs.h:3125 [inline]
 __do_sys_newlstat fs/stat.c:362 [inline]
 __se_sys_newlstat+0xce/0x920 fs/stat.c:356
 __x64_sys_newlstat+0x3e/0x60 fs/stat.c:356
 do_syscall_64+0x9f/0x140 arch/x86/entry/common.c:48
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f4715def335
Code: 69 db 2b 00 64 c7 00 16 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 83 ff 01 48 89 f0 77 30 48 89 c7 48 89 d6 b8 06 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 03 f3 c3 90 48 8b 15 31 db 2b 00 f7 d8 64 89
RSP: 002b:00007fffb6c95f78 EFLAGS: 00000246 ORIG_RAX: 0000000000000006
RAX: ffffffffffffffda RBX: 000056133a162350 RCX: 00007f4715def335
RDX: 00007fffb6c95fb0 RSI: 00007fffb6c95fb0 RDI: 000056133a161350
RBP: 00007fffb6c96070 R08: 00007f47160ae228 R09: 0000000000001010
R10: 00007f47160adb58 R11: 0000000000000246 R12: 000056133a161350
R13: 000056133a16137e R14: 000056133a13f137 R15: 000056133a13f13e

Uninit was created at:
 kmsan_save_stack_with_flags+0x3c/0x90 mm/kmsan/kmsan.c:121
 kmsan_alloc_page+0xd3/0x1f0 mm/kmsan/kmsan_shadow.c:274
 __alloc_pages_nodemask+0x84e/0xfb0 mm/page_alloc.c:4989
 __alloc_pages include/linux/gfp.h:511 [inline]
 __alloc_pages_node include/linux/gfp.h:524 [inline]
 alloc_pages_node include/linux/gfp.h:538 [inline]
 __page_frag_cache_refill mm/page_alloc.c:5065 [inline]
 page_frag_alloc+0x35b/0x890 mm/page_alloc.c:5095
 __netdev_alloc_skb+0x2b2/0xc50 net/core/skbuff.c:451
 __dev_alloc_skb include/linux/skbuff.h:2833 [inline]
 ath9k_hif_usb_rx_stream drivers/net/wireless/ath/ath9k/hif_usb.c:629 [inline]
 ath9k_hif_usb_rx_cb+0xe5a/0x1d10 drivers/net/wireless/ath/ath9k/hif_usb.c:680
 __usb_hcd_giveback_urb+0x687/0x870 drivers/usb/core/hcd.c:1650
 usb_hcd_giveback_urb+0x1cb/0x730 drivers/usb/core/hcd.c:1716
 dummy_timer+0xd57/0x71c0 drivers/usb/gadget/udc/dummy_hcd.c:1967
 call_timer_fn+0x7d/0x450 kernel/time/timer.c:1410
 expire_timers+0x318/0x6c0 kernel/time/timer.c:1455
 __run_timers+0x624/0x9e0 kernel/time/timer.c:1747
 run_timer_softirq+0x2d/0x50 kernel/time/timer.c:1760
 __do_softirq+0x1a9/0x6fa kernel/softirq.c:298
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