diff options
| author | Chengguang Xu <[email protected]> | 2018-04-05 16:20:01 -0700 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2018-04-05 21:36:23 -0700 |
| commit | 9421c3e64137ec69e5cf4ed024dc777a09b7779f (patch) | |
| tree | 53dfc3a13cfc070472ae9a0aa4d6dadd9fc1cf30 | |
| parent | 7ff3c2046803ac99d95de6d63cda46c84f72293b (diff) | |
net/9p/client.c: fix potential refcnt problem of trans module
When specifying trans_mod multiple times in a mount, it will cause an
inaccurate refcount of the trans module. Also, in the error case of
option parsing, we should put the trans module if we have already got
it.
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Chengguang Xu <[email protected]>
Reviewed-by: Andrew Morton <[email protected]>
Cc: David Miller <[email protected]>
Cc: Eric Van Hensbergen <[email protected]>
Cc: Ron Minnich <[email protected]>
Cc: Latchesar Ionkov <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
| -rw-r--r-- | net/9p/client.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/net/9p/client.c b/net/9p/client.c index e6cae8332e2e..21e6df1cc70f 100644 --- a/net/9p/client.c +++ b/net/9p/client.c @@ -190,7 +190,9 @@ static int parse_opts(char *opts, struct p9_client *clnt) p9_debug(P9_DEBUG_ERROR, "problem allocating copy of trans arg\n"); goto free_and_return; - } + } + + v9fs_put_trans(clnt->trans_mod); clnt->trans_mod = v9fs_get_trans_by_name(s); if (clnt->trans_mod == NULL) { pr_info("Could not find request transport: %s\n", @@ -226,6 +228,7 @@ static int parse_opts(char *opts, struct p9_client *clnt) } free_and_return: + v9fs_put_trans(clnt->trans_mod); kfree(tmp_options); return ret; } |