[dm-devel] [PATCH 2/3] libmultipath: don't leak memory on invalid strings

[Benjamin Marzinski]

If set_path() or set_str_noslash() are called with a bad value, they
ignore it and continue to use the old value. But they weren't freeing
the bad value, causing a memory leak.

Signed-off-by: Benjamin Marzinski <bmarzins at redhat.com>
---
 libmultipath/dict.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libmultipath/dict.c b/libmultipath/dict.c
index 97f43387..f4233882 100644
--- a/libmultipath/dict.c
+++ b/libmultipath/dict.c
@@ -130,6 +130,7 @@ set_path(vector strvec, void *ptr, const char *file, int line_nr)
 	if ((*str_ptr)[0] != '/'){
 		condlog(1, "%s line %d, %s is not an absolute path. Ignoring",
 			file, line_nr, *str_ptr);
+		free(*str_ptr);
 		*str_ptr = old_str;
 	} else
 		free(old_str);
@@ -150,6 +151,7 @@ set_str_noslash(vector strvec, void *ptr, const char *file, int line_nr)
 	if (strchr(*str_ptr, '/')) {
 		condlog(1, "%s line %d, %s cannot contain a slash. Ignoring",
 			file, line_nr, *str_ptr);
+		free(*str_ptr);
 		*str_ptr = old_str;
 	} else
 		free(old_str);
-- 
2.17.2