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BUG: KMSAN: uninit-value in nr_route_frame+0x4bb/0xfe0 net/netrom/nr_route.c:782
 nr_route_frame+0x4bb/0xfe0 net/netrom/nr_route.c:782
 nr_xmit+0x5a/0x1c0 net/netrom/nr_dev.c:144
 __netdev_start_xmit include/linux/netdevice.h:4913 [inline]
 netdev_start_xmit include/linux/netdevice.h:4922 [inline]
 xmit_one net/core/dev.c:3580 [inline]
 dev_hard_start_xmit+0x247/0xa20 net/core/dev.c:3596
 __dev_queue_xmit+0x358c/0x5610 net/core/dev.c:4423
 dev_queue_xmit include/linux/netdevice.h:3105 [inline]
 raw_sendmsg+0x64e/0xc10 net/ieee802154/socket.c:299
 ieee802154_sock_sendmsg+0x96/0xd0 net/ieee802154/socket.c:96
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0x30f/0x380 net/socket.c:745
 ____sys_sendmsg+0x877/0xb60 net/socket.c:2597
 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2651
 __sys_sendmsg net/socket.c:2680 [inline]
 __do_sys_sendmsg net/socket.c:2689 [inline]
 __se_sys_sendmsg net/socket.c:2687 [inline]
 __x64_sys_sendmsg+0x307/0x4a0 net/socket.c:2687
 x64_sys_call+0x2da0/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:47
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was created at:
 slab_post_alloc_hook mm/slub.c:3994 [inline]
 slab_alloc_node mm/slub.c:4037 [inline]
 kmem_cache_alloc_node_noprof+0x6bf/0xb80 mm/slub.c:4080
 kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:583
 __alloc_skb+0x363/0x7b0 net/core/skbuff.c:674
 alloc_skb include/linux/skbuff.h:1320 [inline]
 alloc_skb_with_frags+0xc8/0xbf0 net/core/skbuff.c:6526
 sock_alloc_send_pskb+0xa81/0xbf0 net/core/sock.c:2815
 sock_alloc_send_skb include/net/sock.h:1778 [inline]
 raw_sendmsg+0x367/0xc10 net/ieee802154/socket.c:282
 ieee802154_sock_sendmsg+0x96/0xd0 net/ieee802154/socket.c:96
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0x30f/0x380 net/socket.c:745
 ____sys_sendmsg+0x877/0xb60 net/socket.c:2597
 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2651
 __sys_sendmsg net/socket.c:2680 [inline]
 __do_sys_sendmsg net/socket.c:2689 [inline]
 __se_sys_sendmsg net/socket.c:2687 [inline]
 __x64_sys_sendmsg+0x307/0x4a0 net/socket.c:2687
 x64_sys_call+0x2da0/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:47
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

CPU: 1 UID: 0 PID: 5588 Comm: syz.4.44 Not tainted 6.11.0-rc4-syzkaller-00255-gd2bafcf224f3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
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