From: Chengguang Xu <cgxu519@gmx.com>
To: linux-fsdevel@vger.kernel.org
Cc: dhowells@redhat.com, kstewart@linuxfoundation.org,
gregkh@linuxfoundation.org, tglx@linutronix.de,
pombredanne@nexb.com, linux-kernel@vger.kernel.org,
Chengguang Xu <cgxu519@gmx.com>
Subject: [PATCH 2/2] hfsplus: fix potential refcnt problem of nls module
Date: Tue, 17 Apr 2018 15:05:33 +0800 [thread overview]
Message-ID: <1523948733-8537-2-git-send-email-cgxu519@gmx.com> (raw)
In-Reply-To: <1523948733-8537-1-git-send-email-cgxu519@gmx.com>
When specifying nls option multiple times in a mount,
current option parsing will cause inaccurate refcount of nls
module. Hence, call unload_nls for previous one in this case.
Signed-off-by: Chengguang Xu <cgxu519@gmx.com>
---
fs/hfsplus/options.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/fs/hfsplus/options.c b/fs/hfsplus/options.c
index 047e05c..068d4e2 100644
--- a/fs/hfsplus/options.c
+++ b/fs/hfsplus/options.c
@@ -171,8 +171,10 @@ int hfsplus_parse_options(char *input, struct hfsplus_sb_info *sbi)
return 0;
}
p = match_strdup(&args[0]);
- if (p)
+ if (p) {
+ unload_nls(sbi->nls);
sbi->nls = load_nls(p);
+ }
if (!sbi->nls) {
pr_err("unable to load nls mapping \"%s\"\n",
p);
--
1.8.3.1
next prev parent reply other threads:[~2018-04-17 7:05 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-17 7:05 [PATCH 1/2] hfs: fix potential refcnt problem of nls module Chengguang Xu
2018-04-17 7:05 ` Chengguang Xu [this message]
2018-04-18 17:11 ` [PATCH 2/2] hfsplus: " Viacheslav Dubeyko
2018-04-18 19:43 ` Andrew Morton
2018-04-18 17:10 ` [PATCH 1/2] hfs: " Viacheslav Dubeyko
2018-04-18 19:42 ` Andrew Morton
2018-04-19 1:18 ` cgxu519
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