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BUG: KMSAN: uninit-value in hsr_forward_skb+0x292b/0x30e0 net/hsr/hsr_forward.c:618
 hsr_forward_skb+0x292b/0x30e0 net/hsr/hsr_forward.c:618
 hsr_handle_frame+0xa15/0xb40 net/hsr/hsr_slave.c:69
 __netif_receive_skb_core+0x1cdf/0x6100 net/core/dev.c:5423
 __netif_receive_skb_one_core net/core/dev.c:5527 [inline]
 __netif_receive_skb+0xc3/0x5a0 net/core/dev.c:5643
 netif_receive_skb_internal net/core/dev.c:5729 [inline]
 netif_receive_skb+0x58/0x660 net/core/dev.c:5788
 tun_rx_batched+0x3ee/0x980 drivers/net/tun.c:1555
 tun_get_user+0x53af/0x66d0 drivers/net/tun.c:2002
 tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2048
 call_write_iter include/linux/fs.h:2020 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x8ef/0x1490 fs/read_write.c:584
 ksys_write+0x20f/0x4c0 fs/read_write.c:637
 __do_sys_write fs/read_write.c:649 [inline]
 __se_sys_write fs/read_write.c:646 [inline]
 __x64_sys_write+0x93/0xd0 fs/read_write.c:646
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x44/0x110 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

Uninit was stored to memory at:
 hsr_fill_frame_info+0x532/0x540 net/hsr/hsr_forward.c:533
 fill_frame_info net/hsr/hsr_forward.c:600 [inline]
 hsr_forward_skb+0x105a/0x30e0 net/hsr/hsr_forward.c:615
 hsr_handle_frame+0xa15/0xb40 net/hsr/hsr_slave.c:69
 __netif_receive_skb_core+0x1cdf/0x6100 net/core/dev.c:5423
 __netif_receive_skb_one_core net/core/dev.c:5527 [inline]
 __netif_receive_skb+0xc3/0x5a0 net/core/dev.c:5643
 netif_receive_skb_internal net/core/dev.c:5729 [inline]
 netif_receive_skb+0x58/0x660 net/core/dev.c:5788
 tun_rx_batched+0x3ee/0x980 drivers/net/tun.c:1555
 tun_get_user+0x53af/0x66d0 drivers/net/tun.c:2002
 tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2048
 call_write_iter include/linux/fs.h:2020 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x8ef/0x1490 fs/read_write.c:584
 ksys_write+0x20f/0x4c0 fs/read_write.c:637
 __do_sys_write fs/read_write.c:649 [inline]
 __se_sys_write fs/read_write.c:646 [inline]
 __x64_sys_write+0x93/0xd0 fs/read_write.c:646
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x44/0x110 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

Uninit was created at:
 __alloc_pages+0x9a4/0xe00 mm/page_alloc.c:4591
 alloc_pages_mpol+0x62b/0x9d0 mm/mempolicy.c:2133
 alloc_pages+0x1be/0x1e0 mm/mempolicy.c:2204
 skb_page_frag_refill+0x2bf/0x7c0 net/core/sock.c:2905
 tun_build_skb drivers/net/tun.c:1679 [inline]
 tun_get_user+0xe0a/0x66d0 drivers/net/tun.c:1819
 tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2048
 call_write_iter include/linux/fs.h:2020 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x8ef/0x1490 fs/read_write.c:584
 ksys_write+0x20f/0x4c0 fs/read_write.c:637
 __do_sys_write fs/read_write.c:649 [inline]
 __se_sys_write fs/read_write.c:646 [inline]
 __x64_sys_write+0x93/0xd0 fs/read_write.c:646
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x44/0x110 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

CPU: 0 PID: 11928 Comm: syz-executor.5 Not tainted 6.7.0-rc5-syzkaller-00214-gc8e97fc6b4c0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
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