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authorEric Van Hensbergen <ericvh@gmail.com>2010-02-08 16:23:23 -0600
committerEric Van Hensbergen <ericvh@gmail.com>2010-02-08 16:23:23 -0600
commitd8c8a9e36560e9ff4c99279d64ce5dd0e1a33fa6 (patch)
treeb52f301bd5811b9b813b6d244b555edbab38299a /fs/9p
parent7a4439c406c21b1e900ed497cec1a79d05b38c07 (diff)
downloadop-kernel-dev-d8c8a9e36560e9ff4c99279d64ce5dd0e1a33fa6.zip
op-kernel-dev-d8c8a9e36560e9ff4c99279d64ce5dd0e1a33fa6.tar.gz
9p: fix option parsing
Options pointer is being moved before calling kfree() which seems to cause problems. This uses a separate pointer to track and free original allocation. Signed-off-by: Venkateswararao Jujjuri <jvrao@us.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>w
Diffstat (limited to 'fs/9p')
-rw-r--r--fs/9p/v9fs.c10
1 files changed, 6 insertions, 4 deletions
diff --git a/fs/9p/v9fs.c b/fs/9p/v9fs.c
index cf62b05..6848788 100644
--- a/fs/9p/v9fs.c
+++ b/fs/9p/v9fs.c
@@ -84,7 +84,7 @@ static const match_table_t tokens = {
static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts)
{
- char *options;
+ char *options, *tmp_options;
substring_t args[MAX_OPT_ARGS];
char *p;
int option = 0;
@@ -102,9 +102,10 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts)
if (!opts)
return 0;
- options = kstrdup(opts, GFP_KERNEL);
- if (!options)
+ tmp_options = kstrdup(opts, GFP_KERNEL);
+ if (!tmp_options)
goto fail_option_alloc;
+ options = tmp_options;
while ((p = strsep(&options, ",")) != NULL) {
int token;
@@ -194,7 +195,8 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts)
continue;
}
}
- kfree(options);
+
+ kfree(tmp_options);
return ret;
fail_option_alloc:
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