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BUG: KMSAN: kernel-infoleak in instrument_copy_to_user include/linux/instrumented.h:114 [inline]
BUG: KMSAN: kernel-infoleak in copyout lib/iov_iter.c:169 [inline]
BUG: KMSAN: kernel-infoleak in _copy_to_iter+0x420/0x1d00 lib/iov_iter.c:536
 instrument_copy_to_user include/linux/instrumented.h:114 [inline]
 copyout lib/iov_iter.c:169 [inline]
 _copy_to_iter+0x420/0x1d00 lib/iov_iter.c:536
 copy_to_iter include/linux/uio.h:206 [inline]
 simple_copy_to_iter+0x68/0xa0 net/core/datagram.c:513
 __skb_datagram_iter+0x123/0xdc0 net/core/datagram.c:419
 skb_copy_datagram_iter+0x5c/0x200 net/core/datagram.c:527
 skb_copy_datagram_msg include/linux/skbuff.h:3960 [inline]
 netlink_recvmsg+0x4ae/0x15a0 net/netlink/af_netlink.c:1970
 sock_recvmsg_nosec net/socket.c:1019 [inline]
 sock_recvmsg net/socket.c:1040 [inline]
 __sys_recvfrom+0x502/0x810 net/socket.c:2196
 __do_sys_recvfrom net/socket.c:2214 [inline]
 __se_sys_recvfrom net/socket.c:2210 [inline]
 __x64_sys_recvfrom+0x126/0x1d0 net/socket.c:2210
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Uninit was stored to memory at:
 copy_to_user_auth net/xfrm/xfrm_user.c:998 [inline]
 copy_to_user_state_extra+0xfa3/0x1e80 net/xfrm/xfrm_user.c:1130
 dump_one_state+0x2cc/0x7c0 net/xfrm/xfrm_user.c:1208
 xfrm_state_walk+0x721/0x1300 net/xfrm/xfrm_state.c:2309
 xfrm_dump_sa+0x1de/0x6a0 net/xfrm/xfrm_user.c:1279
 netlink_dump+0x9d1/0x1310 net/netlink/af_netlink.c:2268
 __netlink_dump_start+0xa75/0xc40 net/netlink/af_netlink.c:2373
 netlink_dump_start include/linux/netlink.h:329 [inline]
 xfrm_user_rcv_msg+0x75e/0xf30 net/xfrm/xfrm_user.c:3135
 netlink_rcv_skb+0x371/0x650 net/netlink/af_netlink.c:2546
 xfrm_netlink_rcv+0x76/0xb0 net/xfrm/xfrm_user.c:3172
 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline]
 netlink_unicast+0xf28/0x1230 net/netlink/af_netlink.c:1365
 netlink_sendmsg+0x122f/0x13d0 net/netlink/af_netlink.c:1913
 sock_sendmsg_nosec net/socket.c:724 [inline]
 sock_sendmsg net/socket.c:747 [inline]
 ____sys_sendmsg+0x999/0xd50 net/socket.c:2503
 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2557
 __sys_sendmsg net/socket.c:2586 [inline]
 __do_sys_sendmsg net/socket.c:2595 [inline]
 __se_sys_sendmsg net/socket.c:2593 [inline]
 __x64_sys_sendmsg+0x304/0x490 net/socket.c:2593
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Uninit was created at:
 slab_post_alloc_hook+0x12d/0xb60 mm/slab.h:716
 slab_alloc_node mm/slub.c:3451 [inline]
 __kmem_cache_alloc_node+0x4ff/0x8b0 mm/slub.c:3490
 __do_kmalloc_node mm/slab_common.c:965 [inline]
 __kmalloc+0x121/0x3c0 mm/slab_common.c:979
 kmalloc include/linux/slab.h:563 [inline]
 attach_auth net/xfrm/xfrm_user.c:442 [inline]
 xfrm_state_construct net/xfrm/xfrm_user.c:716 [inline]
 xfrm_add_sa+0x29a7/0x4580 net/xfrm/xfrm_user.c:795
 xfrm_user_rcv_msg+0xbcb/0xf30 net/xfrm/xfrm_user.c:3150
 netlink_rcv_skb+0x371/0x650 net/netlink/af_netlink.c:2546
 xfrm_netlink_rcv+0x76/0xb0 net/xfrm/xfrm_user.c:3172
 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline]
 netlink_unicast+0xf28/0x1230 net/netlink/af_netlink.c:1365
 netlink_sendmsg+0x122f/0x13d0 net/netlink/af_netlink.c:1913
 sock_sendmsg_nosec net/socket.c:724 [inline]
 sock_sendmsg net/socket.c:747 [inline]
 ____sys_sendmsg+0x999/0xd50 net/socket.c:2503
 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2557
 __sys_sendmsg net/socket.c:2586 [inline]
 __do_sys_sendmsg net/socket.c:2595 [inline]
 __se_sys_sendmsg net/socket.c:2593 [inline]
 __x64_sys_sendmsg+0x304/0x490 net/socket.c:2593
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Bytes 327-379 of 1616 are uninitialized
Memory access of size 1616 starts at ffff888062483000

CPU: 0 PID: 14776 Comm: syz-executor.2 Tainted: G        W          6.4.0-rc4-syzkaller-g2741f1b02117 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
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