device-mapper-multipath/SOURCES/0002-libmultipath-fix-leak-in-foreign-code.patch

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Benjamin Marzinski <bmarzins@redhat.com>
Date: Mon, 7 Oct 2019 17:17:13 -0500
Subject: [PATCH] libmultipath: fix leak in foreign code
If scandir fails or finds no foreign libraries, enable_re needs to be
freed before exitting.
Fixes: 8d03eda4 'multipath.conf: add "enable_foreign" parameter'
Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
---
libmultipath/foreign.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)
diff --git a/libmultipath/foreign.c b/libmultipath/foreign.c
index 4b34e141..68e9a9b8 100644
--- a/libmultipath/foreign.c
+++ b/libmultipath/foreign.c
@@ -129,7 +129,7 @@ static int _init_foreign(const char *multipath_dir, const char *enable)
char pathbuf[PATH_MAX];
struct dirent **di;
struct scandir_result sr;
- int r, i;
+ int r, i, ret = 0;
regex_t *enable_re = NULL;
foreigns = vector_alloc();
@@ -157,13 +157,15 @@ static int _init_foreign(const char *multipath_dir, const char *enable)
if (r == 0) {
condlog(3, "%s: no foreign multipath libraries found",
__func__);
- return 0;
+ ret = 0;
+ goto out;
} else if (r < 0) {
r = errno;
condlog(1, "%s: error %d scanning foreign multipath libraries",
__func__, r);
_cleanup_foreign();
- return -r;
+ ret = -r;
+ goto out;
}
sr.di = di;
@@ -250,8 +252,9 @@ static int _init_foreign(const char *multipath_dir, const char *enable)
free_foreign(fgn);
}
pthread_cleanup_pop(1); /* free_scandir_result */
+out:
pthread_cleanup_pop(1); /* free_pre */
- return 0;
+ return ret;
}
int init_foreign(const char *multipath_dir, const char *enable)
--
2.17.2