From d5fa7fe8a104b32d673990e41e0066dd32ffcaee Mon Sep 17 00:00:00 2001
From: chao an <anchao@xiaomi.com>
Date: Mon, 11 Sep 2023 16:24:42 +0800
Subject: [PATCH] libsel4muslcsys: fix va list leak in failure case

va_start/va_end should call in pair

Signed-off-by: chao an <anchao@xiaomi.com>
---
 libsel4muslcsys/src/vsyscall.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libsel4muslcsys/src/vsyscall.c b/libsel4muslcsys/src/vsyscall.c
index 44c22bb5d..92ce41881 100644
--- a/libsel4muslcsys/src/vsyscall.c
+++ b/libsel4muslcsys/src/vsyscall.c
@@ -271,6 +271,7 @@ long sel4_vsyscall(long sysnum, ...)
         int index = find_sparse_syscall(sysnum);
         if (index < 0) {
             debug_error(sysnum);
+            va_end(al);
             return -ENOSYS;
         }
         syscall = sparse_syscall_table[index].syscall;
@@ -280,6 +281,7 @@ long sel4_vsyscall(long sysnum, ...)
     /* Check a syscall is implemented there */
     if (!syscall) {
         debug_error(sysnum);
+        va_end(al);
         return -ENOSYS;
     }
     /* Call it */