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9p: fix option parsing

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Options pointer is being moved before calling kfree() which seems
to cause problems.  This uses a separate pointer to track and free
original allocation.

Signed-off-by: Venkateswararao Jujjuri <jvrao@us.ibm.com>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>w
This commit is contained in:
Eric Van Hensbergen
2010-02-08 16:23:23 -06:00
parent 7a4439c406
commit d8c8a9e365
4 changed files with 22 additions and 16 deletions
Download Patch File Download Diff File Expand all files Collapse all files
net/9p/client.c
+5 -4
View File
@@ -69,7 +69,7 @@ p9_client_rpc(struct p9_client *c, int8_t type, const char *fmt, ...);
static int parse_opts(char *opts, struct p9_client *clnt)
{
char *options;
char *options, *tmp_options;
char *p;
substring_t args[MAX_OPT_ARGS];
int option;
@@ -81,12 +81,13 @@ static int parse_opts(char *opts, struct p9_client *clnt)
if (!opts)
return 0;
options = kstrdup(opts, GFP_KERNEL);
if (!options) {
tmp_options = kstrdup(opts, GFP_KERNEL);
if (!tmp_options) {
P9_DPRINTK(P9_DEBUG_ERROR,
"failed to allocate copy of option string\n");
return -ENOMEM;
}
options = tmp_options;
while ((p = strsep(&options, ",")) != NULL) {
int token;
@@ -125,7 +126,7 @@ static int parse_opts(char *opts, struct p9_client *clnt)
}
free_and_return:
kfree(options);
kfree(tmp_options);
return ret;
}
net/9p/trans_fd.c
+6 -4
View File
@@ -714,7 +714,7 @@ static int parse_opts(char *params, struct p9_fd_opts *opts)
char *p;
substring_t args[MAX_OPT_ARGS];
int option;
char *options;
char *options, *tmp_options;
int ret;
opts->port = P9_PORT;
@@ -724,12 +724,13 @@ static int parse_opts(char *params, struct p9_fd_opts *opts)
if (!params)
return 0;
options = kstrdup(params, GFP_KERNEL);
if (!options) {
tmp_options = kstrdup(params, GFP_KERNEL);
if (!tmp_options) {
P9_DPRINTK(P9_DEBUG_ERROR,
"failed to allocate copy of option string\n");
return -ENOMEM;
}
options = tmp_options;
while ((p = strsep(&options, ",")) != NULL) {
int token;
@@ -760,7 +761,8 @@ static int parse_opts(char *params, struct p9_fd_opts *opts)
continue;
}
}
kfree(options);
kfree(tmp_options);
return 0;
}
net/9p/trans_rdma.c
+5 -4
View File
@@ -166,7 +166,7 @@ static int parse_opts(char *params, struct p9_rdma_opts *opts)
char *p;
substring_t args[MAX_OPT_ARGS];
int option;
char *options;
char *options, *tmp_options;
int ret;
opts->port = P9_PORT;
@@ -177,12 +177,13 @@ static int parse_opts(char *params, struct p9_rdma_opts *opts)
if (!params)
return 0;
options = kstrdup(params, GFP_KERNEL);
if (!options) {
tmp_options = kstrdup(params, GFP_KERNEL);
if (!tmp_options) {
P9_DPRINTK(P9_DEBUG_ERROR,
"failed to allocate copy of option string\n");
return -ENOMEM;
}
options = tmp_options;
while ((p = strsep(&options, ",")) != NULL) {
int token;
@@ -216,7 +217,7 @@ static int parse_opts(char *params, struct p9_rdma_opts *opts)
}
/* RQ must be at least as large as the SQ */
opts->rq_depth = max(opts->rq_depth, opts->sq_depth);
kfree(options);
kfree(tmp_options);
return 0;
}