From 8999e04f3b7930f0c6f091a541237de51d8dd372 Mon Sep 17 00:00:00 2001 From: Latchesar Ionkov Date: Tue, 6 Nov 2007 08:02:53 -0600 Subject: [PATCH] 9p: use copy of the options value instead of original v9fs_parse_options function uses strsep which modifies the value of the v9ses->options field. That modified value is later passed to the function that creates the transport potentially making the transport creation function to fail. This patch creates a copy of v9ses->option field that v9fs_parse_options function uses instead of the original value. Signed-off-by: Latchesar Ionkov Acked-by: Eric Van Hensbergen --- fs/9p/v9fs.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/fs/9p/v9fs.c b/fs/9p/v9fs.c index 756f7e9beb..fbb12dadba 100644 --- a/fs/9p/v9fs.c +++ b/fs/9p/v9fs.c @@ -82,7 +82,7 @@ static match_table_t tokens = { static void v9fs_parse_options(struct v9fs_session_info *v9ses) { - char *options = v9ses->options; + char *options; substring_t args[MAX_OPT_ARGS]; char *p; int option; @@ -96,9 +96,10 @@ static void v9fs_parse_options(struct v9fs_session_info *v9ses) v9ses->cache = 0; v9ses->trans = v9fs_default_trans(); - if (!options) + if (!v9ses->options) return; + options = kstrdup(v9ses->options, GFP_KERNEL); while ((p = strsep(&options, ",")) != NULL) { int token; if (!*p) @@ -169,6 +170,7 @@ static void v9fs_parse_options(struct v9fs_session_info *v9ses) continue; } } + kfree(options); } /** -- 2.39.5