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NFS client bugfixe for Linux 3.8

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- Fix a socket lock leak in net/sunrpc/xprt.c
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Merge tag 'nfs-for-3.8-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull NFS client bugfix from Trond Myklebust:

- Fix a socket lock leak in net/sunrpc/xprt.c

* tag 'nfs-for-3.8-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  SUNRPC: Ensure we release the socket write lock if the rpc_task exits early
This commit is contained in:
Linus Torvalds 2013-01-11 12:09:04 -08:00
commit 93ccb3910a
2 changed files with 11 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
net/sunrpc/sched.c
View file

@ -972,8 +972,7 @@ static void rpc_async_release(struct work_struct *work)
static void rpc_release_resources_task(struct rpc_task *task)
{
if (task->tk_rqstp)
xprt_release(task);
xprt_release(task);
if (task->tk_msg.rpc_cred) {
put_rpccred(task->tk_msg.rpc_cred);
task->tk_msg.rpc_cred = NULL;

12
net/sunrpc/xprt.c
View file

@ -1136,10 +1136,18 @@ static void xprt_request_init(struct rpc_task *task, struct rpc_xprt *xprt)
void xprt_release(struct rpc_task *task)
{
struct rpc_xprt *xprt;
struct rpc_rqst *req;
struct rpc_rqst *req = task->tk_rqstp;
if (!(req = task->tk_rqstp))
if (req == NULL) {
if (task->tk_client) {
rcu_read_lock();
xprt = rcu_dereference(task->tk_client->cl_xprt);
if (xprt->snd_task == task)
xprt_release_write(xprt, task);
rcu_read_unlock();
}
return;
}
xprt = req->rq_xprt;
if (task->tk_ops->rpc_count_stats != NULL)