The patch titled
Subject: 9p: check memory allocation result for cachetag
has been added to the -mm tree. Its filename is
9p-check-memory-allocation-result-for-cachetag.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/9p-check-memory-allocation-result-for-cachetag.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/9p-check-memory-allocation-result-for-cachetag.patch
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*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Chengguang Xu <cgxu519@xxxxxxx>
Subject: 9p: check memory allocation result for cachetag
Check memory allocation result for cachetag in mount option parsing and
fix potential memory leak in the error case.
Link: http://lkml.kernel.org/r/1521614889-73446-1-git-send-email-cgxu519@xxxxxxx
Signed-off-by: Chengguang Xu <cgxu519@xxxxxxx>
Reviewed-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Eric Van Hensbergen <ericvh@xxxxxxxxx>
Cc: Ron Minnich <rminnich@xxxxxxxxxx>
Cc: Latchesar Ionkov <lucho@xxxxxxxxxx>
Cc: <v9fs-developer@xxxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/9p/v9fs.c | 7 +++++++
1 file changed, 7 insertions(+)
diff -puN fs/9p/v9fs.c~9p-check-memory-allocation-result-for-cachetag fs/9p/v9fs.c
--- a/fs/9p/v9fs.c~9p-check-memory-allocation-result-for-cachetag
+++ a/fs/9p/v9fs.c
@@ -292,6 +292,10 @@ static int v9fs_parse_options(struct v9f
#ifdef CONFIG_9P_FSCACHE
kfree(v9ses->cachetag);
v9ses->cachetag = match_strdup(&args[0]);
+ if (!v9ses->cachetag) {
+ ret = -ENOMEM;
+ goto free_and_return;
+ }
#endif
break;
case Opt_cache:
@@ -471,6 +475,9 @@ struct p9_fid *v9fs_session_init(struct
return fid;
err_clnt:
+#ifdef CONFIG_9P_FSCACHE
+ kfree(v9ses->cachetag);
+#endif
p9_client_destroy(v9ses->clnt);
err_names:
kfree(v9ses->uname);
_
Patches currently in -mm which might be from cgxu519@xxxxxxx are
9p-check-memory-allocation-result-for-cachetag.patch
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