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BUG: KMSAN: uninit-value in eth_skb_pkt_type include/linux/etherdevice.h:627 [inline]
BUG: KMSAN: uninit-value in eth_type_trans+0x461/0x9a0 net/ethernet/eth.c:165
 eth_skb_pkt_type include/linux/etherdevice.h:627 [inline]
 eth_type_trans+0x461/0x9a0 net/ethernet/eth.c:165
 __xdp_build_skb_from_frame+0x5ca/0xa60 net/core/xdp.c:831
 xdp_recv_frames net/bpf/test_run.c:261 [inline]
 xdp_test_run_batch net/bpf/test_run.c:350 [inline]
 bpf_test_run_xdp_live+0x2b1d/0x3680 net/bpf/test_run.c:379
 bpf_prog_test_run_xdp+0x15be/0x1cf0 net/bpf/test_run.c:1320
 bpf_prog_test_run+0x5c2/0xa40 kernel/bpf/syscall.c:4688
 __sys_bpf+0x873/0xeb0 kernel/bpf/syscall.c:6167
 __do_sys_bpf kernel/bpf/syscall.c:6259 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:6257 [inline]
 __ia32_sys_bpf+0xa4/0xf0 kernel/bpf/syscall.c:6257
 ia32_sys_call+0xadf/0x4310 arch/x86/include/generated/asm/syscalls_32.h:358
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
 __do_fast_syscall_32+0xb0/0x150 arch/x86/entry/syscall_32.c:306
 do_fast_syscall_32+0x38/0x80 arch/x86/entry/syscall_32.c:331
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/syscall_32.c:369
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e

Uninit was stored to memory at:
 nf_ct_frag6_reasm+0x3d2/0xc60 net/ipv6/netfilter/nf_conntrack_reasm.c:349
 nf_ct_frag6_queue net/ipv6/netfilter/nf_conntrack_reasm.c:292 [inline]
 nf_ct_frag6_gather+0x2d00/0x3280 net/ipv6/netfilter/nf_conntrack_reasm.c:491
 ipv6_defrag+0x54f/0x6d0 net/ipv6/netfilter/nf_defrag_ipv6_hooks.c:67
 nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]
 nf_hook_slow+0xe1/0x3d0 net/netfilter/core.c:623
 nf_hook_slow_list+0x214/0x850 net/netfilter/core.c:660
 NF_HOOK_LIST include/linux/netfilter.h:354 [inline]
 ip6_sublist_rcv+0x23d9/0x2410 net/ipv6/ip6_input.c:319
 ipv6_list_rcv+0xa30/0xa90 net/ipv6/ip6_input.c:355
 __netif_receive_skb_list_ptype net/core/dev.c:6122 [inline]
 __netif_receive_skb_list_core+0x10bc/0x16b0 net/core/dev.c:6169
 __netif_receive_skb_list net/core/dev.c:6221 [inline]
 netif_receive_skb_list_internal+0xee7/0x1530 net/core/dev.c:6312
 netif_receive_skb_list+0x5a/0x3f0 net/core/dev.c:6364
 xdp_recv_frames net/bpf/test_run.c:269 [inline]
 xdp_test_run_batch net/bpf/test_run.c:350 [inline]
 bpf_test_run_xdp_live+0x2f23/0x3680 net/bpf/test_run.c:379
 bpf_prog_test_run_xdp+0x15be/0x1cf0 net/bpf/test_run.c:1320
 bpf_prog_test_run+0x5c2/0xa40 kernel/bpf/syscall.c:4688
 __sys_bpf+0x873/0xeb0 kernel/bpf/syscall.c:6167
 __do_sys_bpf kernel/bpf/syscall.c:6259 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:6257 [inline]
 __ia32_sys_bpf+0xa4/0xf0 kernel/bpf/syscall.c:6257
 ia32_sys_call+0xadf/0x4310 arch/x86/include/generated/asm/syscalls_32.h:358
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
 __do_fast_syscall_32+0xb0/0x150 arch/x86/entry/syscall_32.c:306
 do_fast_syscall_32+0x38/0x80 arch/x86/entry/syscall_32.c:331
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/syscall_32.c:369
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e

Uninit was created at:
 slab_post_alloc_hook mm/slub.c:4977 [inline]
 slab_alloc_node mm/slub.c:5280 [inline]
 kmem_cache_alloc_noprof+0x8f5/0x1640 mm/slub.c:5287
 getname_flags+0x102/0xac0 fs/namei.c:146
 getname include/linux/fs.h:2922 [inline]
 __io_openat_prep io_uring/openclose.c:70 [inline]
 io_openat_prep+0x2e2/0x6b0 io_uring/openclose.c:95
 io_init_req io_uring/io_uring.c:2248 [inline]
 io_submit_sqe io_uring/io_uring.c:2295 [inline]
 io_submit_sqes+0x1122/0x3030 io_uring/io_uring.c:2447
 __do_sys_io_uring_enter io_uring/io_uring.c:3514 [inline]
 __se_sys_io_uring_enter+0x3b7/0x4c30 io_uring/io_uring.c:3453
 __ia32_sys_io_uring_enter+0x112/0x1a0 io_uring/io_uring.c:3453
 ia32_sys_call+0x3e68/0x4310 arch/x86/include/generated/asm/syscalls_32.h:427
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
 __do_fast_syscall_32+0xb0/0x150 arch/x86/entry/syscall_32.c:306
 do_fast_syscall_32+0x38/0x80 arch/x86/entry/syscall_32.c:331
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/syscall_32.c:369
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e

CPU: 0 UID: 0 PID: 20787 Comm: syz.7.4919 Not tainted syzkaller #0 PREEMPT(none) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
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