28d3ae407e
This is an automated DistroBaker update from upstream sources. If you do not know what this is about or would like to opt out, contact the OSCI team. Source: https://src.fedoraproject.org/rpms/device-mapper-multipath.git#26a2cd7a3e189bf91263d17bc8a8c449cc043fb0
96 lines
2.4 KiB
Diff
96 lines
2.4 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
|
From: Martin Wilck <mwilck@suse.com>
|
|
Date: Wed, 23 Sep 2020 23:30:50 +0200
|
|
Subject: [PATCH] multipath: fix leak in check_path_valid()
|
|
|
|
If path status was successfully determined before calling store_pathvec(),
|
|
free_path() wasn't called.
|
|
|
|
Reviewed-by: Benjamin Marzinski <bmarzins@redhat.com>
|
|
Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
|
|
---
|
|
multipath/main.c | 30 ++++++++++++++++++++----------
|
|
1 file changed, 20 insertions(+), 10 deletions(-)
|
|
|
|
diff --git a/multipath/main.c b/multipath/main.c
|
|
index 1949a1cd..043d8fa7 100644
|
|
--- a/multipath/main.c
|
|
+++ b/multipath/main.c
|
|
@@ -93,7 +93,7 @@ void rcu_register_thread_memb(void) {}
|
|
void rcu_unregister_thread_memb(void) {}
|
|
|
|
static int
|
|
-filter_pathvec (vector pathvec, char * refwwid)
|
|
+filter_pathvec (vector pathvec, const char *refwwid)
|
|
{
|
|
int i;
|
|
struct path * pp;
|
|
@@ -594,8 +594,9 @@ static int
|
|
check_path_valid(const char *name, struct config *conf, bool is_uevent)
|
|
{
|
|
int fd, r = PATH_IS_ERROR;
|
|
- struct path *pp = NULL;
|
|
+ struct path *pp;
|
|
vector pathvec = NULL;
|
|
+ const char *wwid;
|
|
|
|
pp = alloc_path();
|
|
if (!pp)
|
|
@@ -664,14 +665,19 @@ check_path_valid(const char *name, struct config *conf, bool is_uevent)
|
|
|
|
if (store_path(pathvec, pp) != 0) {
|
|
free_path(pp);
|
|
+ pp = NULL;
|
|
goto fail;
|
|
+ } else {
|
|
+ /* make sure path isn't freed twice */
|
|
+ wwid = pp->wwid;
|
|
+ pp = NULL;
|
|
}
|
|
|
|
/* For find_multipaths = SMART, if there is more than one path
|
|
* matching the refwwid, then the path is valid */
|
|
if (path_discovery(pathvec, DI_SYSFS | DI_WWID) < 0)
|
|
goto fail;
|
|
- filter_pathvec(pathvec, pp->wwid);
|
|
+ filter_pathvec(pathvec, wwid);
|
|
if (VECTOR_SIZE(pathvec) > 1)
|
|
r = PATH_IS_VALID;
|
|
else
|
|
@@ -679,21 +685,25 @@ check_path_valid(const char *name, struct config *conf, bool is_uevent)
|
|
|
|
out:
|
|
r = print_cmd_valid(r, pathvec, conf);
|
|
- free_pathvec(pathvec, FREE_PATHS);
|
|
/*
|
|
* multipath -u must exit with status 0, otherwise udev won't
|
|
* import its output.
|
|
*/
|
|
if (!is_uevent && r == PATH_IS_NOT_VALID)
|
|
- return RTVL_FAIL;
|
|
- return RTVL_OK;
|
|
+ r = RTVL_FAIL;
|
|
+ else
|
|
+ r = RTVL_OK;
|
|
+ goto cleanup;
|
|
|
|
fail:
|
|
- if (pathvec)
|
|
- free_pathvec(pathvec, FREE_PATHS);
|
|
- else
|
|
+ r = RTVL_FAIL;
|
|
+
|
|
+cleanup:
|
|
+ if (pp != NULL)
|
|
free_path(pp);
|
|
- return RTVL_FAIL;
|
|
+ if (pathvec != NULL)
|
|
+ free_pathvec(pathvec, FREE_PATHS);
|
|
+ return r;
|
|
}
|
|
|
|
static int
|
|
--
|
|
2.17.2
|
|
|