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BUG: KMSAN: uninit-value in bpf_sk_storage_diag_alloc+0xa7d/0xe10 net/core/bpf_sk_storage.c:520
 bpf_sk_storage_diag_alloc+0xa7d/0xe10 net/core/bpf_sk_storage.c:520
 __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:2381
 netlink_dump_start include/linux/netlink.h:294 [inline]
 inet_diag_rcv_msg_compat+0x285/0x520 net/ipv4/inet_diag.c:1321
 sock_diag_rcv_msg+0x1c5/0x520
 netlink_rcv_skb+0x3f1/0x750 net/netlink/af_netlink.c:2564
 sock_diag_rcv+0x3c/0x50 net/core/sock_diag.c:280
 netlink_unicast_kernel net/netlink/af_netlink.c:1330 [inline]
 netlink_unicast+0xf3b/0x1270 net/netlink/af_netlink.c:1356
 netlink_sendmsg+0x127d/0x1430 net/netlink/af_netlink.c:1932
 sock_sendmsg_nosec net/socket.c:714 [inline]
 sock_sendmsg net/socket.c:734 [inline]
 ____sys_sendmsg+0xa8e/0xe70 net/socket.c:2476
 ___sys_sendmsg+0x2a1/0x3f0 net/socket.c:2530
 __sys_sendmsg+0x258/0x440 net/socket.c:2559
 __compat_sys_sendmsg net/compat.c:345 [inline]
 __do_compat_sys_sendmsg net/compat.c:352 [inline]
 __se_compat_sys_sendmsg net/compat.c:349 [inline]
 __ia32_compat_sys_sendmsg+0x99/0xe0 net/compat.c:349
 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:766 [inline]
 slab_alloc_node mm/slub.c:3452 [inline]
 __kmem_cache_alloc_node+0x71f/0xce0 mm/slub.c:3491
 __do_kmalloc_node mm/slab_common.c:967 [inline]
 __kmalloc_node_track_caller+0x114/0x3b0 mm/slab_common.c:988
 kmalloc_reserve net/core/skbuff.c:492 [inline]
 __alloc_skb+0x3af/0x8f0 net/core/skbuff.c:565
 alloc_skb include/linux/skbuff.h:1270 [inline]
 netlink_alloc_large_skb net/netlink/af_netlink.c:1202 [inline]
 netlink_sendmsg+0xb66/0x1430 net/netlink/af_netlink.c:1907
 sock_sendmsg_nosec net/socket.c:714 [inline]
 sock_sendmsg net/socket.c:734 [inline]
 ____sys_sendmsg+0xa8e/0xe70 net/socket.c:2476
 ___sys_sendmsg+0x2a1/0x3f0 net/socket.c:2530
 __sys_sendmsg+0x258/0x440 net/socket.c:2559
 __compat_sys_sendmsg net/compat.c:345 [inline]
 __do_compat_sys_sendmsg net/compat.c:352 [inline]
 __se_compat_sys_sendmsg net/compat.c:349 [inline]
 __ia32_compat_sys_sendmsg+0x99/0xe0 net/compat.c:349
 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: 10637 Comm: syz-executor.4 Not tainted 6.2.0-rc5-syzkaller-80200-g41c66f470616 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
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