=====================================================
BUG: KMSAN: uninit-value in check_pointer lib/vsprintf.c:705 [inline]
BUG: KMSAN: uninit-value in string+0x3d2/0x700 lib/vsprintf.c:717
 check_pointer lib/vsprintf.c:705 [inline]
 string+0x3d2/0x700 lib/vsprintf.c:717
 vsnprintf+0x224f/0x36a0 lib/vsprintf.c:2797
 snprintf+0x244/0x290 lib/vsprintf.c:2930
 esp_init_authenc net/ipv6/esp6.c:1108 [inline]
 esp6_init_state+0x535/0x1a60 net/ipv6/esp6.c:1186
 __xfrm_init_state+0x1048/0x18d0 net/xfrm/xfrm_state.c:2648
 xfrm_state_construct net/xfrm/xfrm_user.c:627 [inline]
 xfrm_add_sa+0x3f45/0x5040 net/xfrm/xfrm_user.c:684
 xfrm_user_rcv_msg+0xe2c/0x11b0 net/xfrm/xfrm_user.c:2912
 netlink_rcv_skb+0x447/0x800 net/netlink/af_netlink.c:2510
 xfrm_netlink_rcv+0xb2/0xf0 net/xfrm/xfrm_user.c:2934
 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
 netlink_unicast+0x107b/0x1350 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0x1717/0x18a0 net/netlink/af_netlink.c:1935
 sock_sendmsg_nosec net/socket.c:704 [inline]
 sock_sendmsg net/socket.c:724 [inline]
 ____sys_sendmsg+0xe11/0x12c0 net/socket.c:2409
 ___sys_sendmsg net/socket.c:2463 [inline]
 __sys_sendmsg+0x704/0x840 net/socket.c:2492
 __do_sys_sendmsg net/socket.c:2501 [inline]
 __se_sys_sendmsg net/socket.c:2499 [inline]
 __x64_sys_sendmsg+0xe2/0x120 net/socket.c:2499
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x54/0xd0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Local variable sample.i created at:
 perf_log_itrace_start kernel/events/core.c:9069 [inline]
 event_sched_in+0x13d1/0x33e0 kernel/events/core.c:2557
 group_sched_in kernel/events/core.c:2595 [inline]
 merge_sched_in kernel/events/core.c:3746 [inline]
 visit_groups_merge+0x28a8/0x7320 kernel/events/core.c:3696
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