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Message-Id: <1523708348-683-1-git-send-email-cgxu519@gmx.com> Date: Sat, 14 Apr 2018 20:19:08 +0800 From: Chengguang Xu <cgxu519@....com> To: ooo@...ctrozaur.com Cc: linux-kernel@...r.kernel.org, Chengguang Xu <cgxu519@....com> Subject: [PATCH] exofs: fix potential memory leak in mount option parsing When specifying string type mount option several times in a mount, current option parsing may cause memory leak. Hence, call kfree for previous one in this case. Signed-off-by: Chengguang Xu <cgxu519@....com> --- fs/exofs/super.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/exofs/super.c b/fs/exofs/super.c index 179cd5c..106b818 100644 --- a/fs/exofs/super.c +++ b/fs/exofs/super.c @@ -101,6 +101,7 @@ static int parse_options(char *options, struct exofs_mountopt *opts) token = match_token(p, tokens, args); switch (token) { case Opt_name: + kfree(opts->dev_name); opts->dev_name = match_strdup(&args[0]); if (unlikely(!opts->dev_name)) { EXOFS_ERR("Error allocating dev_name"); -- 1.8.3.1
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