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authorEric Van Hensbergen <ericvh@gmail.com>2010-02-08 17:59:34 -0600
committerEric Van Hensbergen <ericvh@gmail.com>2010-02-08 17:59:34 -0600
commitbf2d29c64dd777e9a40bc4533e721944a590250f (patch)
tree4425f4ab1cee9cdf24a4ac92122682c929c24964
parentfb786100f7c75e154e63d0f5a2982e6d46dfb602 (diff)
downloadlinux-linaro-stable-bf2d29c64dd777e9a40bc4533e721944a590250f.tar.gz
9p: fix memory leak in v9fs_parse_options()
If match_strdup() fail this function exits without freeing the options string. Signed-off-by: Venkateswararao Jujjuri <jvrao@us.ibm.com> Sigend-off-by: Eric Van Hensbergen <ericvh@gmail.com>
-rw-r--r--fs/9p/v9fs.c27
1 files changed, 17 insertions, 10 deletions
diff --git a/fs/9p/v9fs.c b/fs/9p/v9fs.c
index 6848788a13db..7d6c2139891d 100644
--- a/fs/9p/v9fs.c
+++ b/fs/9p/v9fs.c
@@ -103,8 +103,10 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts)
return 0;
tmp_options = kstrdup(opts, GFP_KERNEL);
- if (!tmp_options)
+ if (!tmp_options) {
+ ret = -ENOMEM;
goto fail_option_alloc;
+ }
options = tmp_options;
while ((p = strsep(&options, ",")) != NULL) {
@@ -160,8 +162,12 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts)
break;
case Opt_cache:
s = match_strdup(&args[0]);
- if (!s)
- goto fail_option_alloc;
+ if (!s) {
+ ret = -ENOMEM;
+ P9_DPRINTK(P9_DEBUG_ERROR,
+ "problem allocating copy of cache arg\n");
+ goto free_and_return;
+ }
if (strcmp(s, "loose") == 0)
v9ses->cache = CACHE_LOOSE;
@@ -174,8 +180,12 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts)
case Opt_access:
s = match_strdup(&args[0]);
- if (!s)
- goto fail_option_alloc;
+ if (!s) {
+ ret = -ENOMEM;
+ P9_DPRINTK(P9_DEBUG_ERROR,
+ "problem allocating copy of access arg\n");
+ goto free_and_return;
+ }
v9ses->flags &= ~V9FS_ACCESS_MASK;
if (strcmp(s, "user") == 0)
@@ -196,13 +206,10 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts)
}
}
+free_and_return:
kfree(tmp_options);
- return ret;
-
fail_option_alloc:
- P9_DPRINTK(P9_DEBUG_ERROR,
- "failed to allocate copy of option argument\n");
- return -ENOMEM;
+ return ret;
}
/**