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BUG: KMSAN: uninit-value in bpf_sk_storage_diag_alloc+0xa7d/0xe10 net/core/bpf_sk_storage.c:550
 bpf_sk_storage_diag_alloc+0xa7d/0xe10 net/core/bpf_sk_storage.c:550
 __inet_diag_dump_start+0x765/0x1770 net/ipv4/inet_diag.c:1231
 inet_diag_dump_start_compat+0x2e/0x40 net/ipv4/inet_diag.c:1250
 __netlink_dump_start+0x642/0xc40 net/netlink/af_netlink.c:2370
 netlink_dump_start include/linux/netlink.h:269 [inline]
 inet_diag_rcv_msg_compat+0x285/0x520 net/ipv4/inet_diag.c:1321
 sock_diag_rcv_msg+0x1c5/0x520
 netlink_rcv_skb+0x3b5/0x6e0 net/netlink/af_netlink.c:2540
 sock_diag_rcv+0x3c/0x50 net/core/sock_diag.c:277
 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
 netlink_unicast+0xf3b/0x1270 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0x127d/0x1430 net/netlink/af_netlink.c:1921
 sock_sendmsg_nosec net/socket.c:714 [inline]
 sock_sendmsg net/socket.c:734 [inline]
 ____sys_sendmsg+0xa8e/0xe70 net/socket.c:2482
 ___sys_sendmsg+0x2a1/0x3f0 net/socket.c:2536
 __sys_sendmsg+0x258/0x440 net/socket.c:2565
 __compat_sys_sendmsg net/compat.c:344 [inline]
 __do_compat_sys_sendmsg net/compat.c:351 [inline]
 __se_compat_sys_sendmsg net/compat.c:348 [inline]
 __ia32_compat_sys_sendmsg+0x99/0xe0 net/compat.c:348
 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
 __do_fast_syscall_32+0xa2/0x100 arch/x86/entry/common.c:178
 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203
 do_SYSENTER_32+0x1b/0x20 arch/x86/entry/common.c:246
 entry_SYSENTER_compat_after_hwframe+0x70/0x82

Uninit was created at:
 slab_post_alloc_hook mm/slab.h:742 [inline]
 slab_alloc_node mm/slub.c:3398 [inline]
 __kmem_cache_alloc_node+0x6ee/0xc90 mm/slub.c:3437
 __do_kmalloc_node mm/slab_common.c:954 [inline]
 __kmalloc_node_track_caller+0x117/0x3d0 mm/slab_common.c:975
 kmalloc_reserve net/core/skbuff.c:437 [inline]
 __alloc_skb+0x34a/0xca0 net/core/skbuff.c:509
 alloc_skb include/linux/skbuff.h:1267 [inline]
 netlink_alloc_large_skb net/netlink/af_netlink.c:1191 [inline]
 netlink_sendmsg+0xb66/0x1430 net/netlink/af_netlink.c:1896
 sock_sendmsg_nosec net/socket.c:714 [inline]
 sock_sendmsg net/socket.c:734 [inline]
 ____sys_sendmsg+0xa8e/0xe70 net/socket.c:2482
 ___sys_sendmsg+0x2a1/0x3f0 net/socket.c:2536
 __sys_sendmsg+0x258/0x440 net/socket.c:2565
 __compat_sys_sendmsg net/compat.c:344 [inline]
 __do_compat_sys_sendmsg net/compat.c:351 [inline]
 __se_compat_sys_sendmsg net/compat.c:348 [inline]
 __ia32_compat_sys_sendmsg+0x99/0xe0 net/compat.c:348
 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
 __do_fast_syscall_32+0xa2/0x100 arch/x86/entry/common.c:178
 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203
 do_SYSENTER_32+0x1b/0x20 arch/x86/entry/common.c:246
 entry_SYSENTER_compat_after_hwframe+0x70/0x82

CPU: 0 PID: 4043 Comm: syz-executor.5 Not tainted 6.1.0-rc4-syzkaller-62821-gcb231e2f67ec #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
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