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-rw-r--r--meta/recipes-connectivity/nfs-utils/nfs-utils/0001-Do-not-pass-null-pointer-to-freeaddrinfo.patch32
1 files changed, 32 insertions, 0 deletions
diff --git a/meta/recipes-connectivity/nfs-utils/nfs-utils/0001-Do-not-pass-null-pointer-to-freeaddrinfo.patch b/meta/recipes-connectivity/nfs-utils/nfs-utils/0001-Do-not-pass-null-pointer-to-freeaddrinfo.patch
new file mode 100644
index 0000000000..a44d1bf2fe
--- /dev/null
+++ b/meta/recipes-connectivity/nfs-utils/nfs-utils/0001-Do-not-pass-null-pointer-to-freeaddrinfo.patch
@@ -0,0 +1,32 @@
+From 4f115fc314646500f7b4178d7248a02654c7cd10 Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Fri, 30 Nov 2018 16:47:57 -0800
+Subject: [PATCH] Do not pass null pointer to freeaddrinfo()
+
+Passing null pointer as input parameter to freeaddrinfo() is undefined
+behaviour, some libcs e.g. glibc might just call free() which does
+accept null pointer but other libcs e.g. musl might not and instead
+cause the program to segfault. Therefore do not rely on undefined
+behaviour instead make it deterministic
+
+Upstream-Status: Pending
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ support/export/client.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+Index: nfs-utils-2.3.2/support/export/client.c
+===================================================================
+--- nfs-utils-2.3.2.orig/support/export/client.c
++++ nfs-utils-2.3.2/support/export/client.c
+@@ -309,7 +309,8 @@ client_lookup(char *hname, int canonical
+ init_addrlist(clp, ai);
+
+ out:
+- freeaddrinfo(ai);
++ if (ai)
++ freeaddrinfo(ai);
+ return clp;
+ }
+