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NFS client bugfixes for Linux 3.9

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- Stable fix for memory corruption issues in nfs4[01]_walk_client_list
 - Stable fix for an Oopsable bug in rpc_clone_client
 - Another state manager deadlock in the NFSv4 open code
 - Memory leaks in nfs4_discover_server_trunking and rpc_new_client
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Merge tag 'nfs-for-3.9-4' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull NFS client bugfixes from Trond Myklebust:
 - fix for memory corruption issues in nfs4[01]_walk_client_list (stable)
 - fix for an Oopsable bug in rpc_clone_client (stable)
 - another state manager deadlock in the NFSv4 open code
 - memory leaks in nfs4_discover_server_trunking and rpc_new_client

* tag 'nfs-for-3.9-4' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  NFSv4: Fix another potential state manager deadlock
  SUNRPC: Fix a potential memory leak in rpc_new_client
  NFSv4/4.1: Fix bugs in nfs4[01]_walk_client_list
  NFSv4: Fix a memory leak in nfs4_discover_server_trunking
  SUNRPC: Remove extra xprt_put()
This commit is contained in:
Linus Torvalds 2013-04-10 09:00:51 -07:00
commit f94eeb423b
4 changed files with 39 additions and 25 deletions
Download patch file Download diff file Expand all files Collapse all files

11
net/sunrpc/clnt.c
View file

@ -304,10 +304,8 @@ static struct rpc_clnt * rpc_new_client(const struct rpc_create_args *args, stru
err = rpciod_up();
if (err)
goto out_no_rpciod;
err = -EINVAL;
if (!xprt)
goto out_no_xprt;
err = -EINVAL;
if (args->version >= program->nrvers)
goto out_err;
version = program->version[args->version];
@ -382,10 +380,9 @@ out_no_principal:
out_no_stats:
kfree(clnt);
out_err:
xprt_put(xprt);
out_no_xprt:
rpciod_down();
out_no_rpciod:
xprt_put(xprt);
return ERR_PTR(err);
}
@ -512,7 +509,7 @@ static struct rpc_clnt *__rpc_clone_client(struct rpc_create_args *args,
new = rpc_new_client(args, xprt);
if (IS_ERR(new)) {
err = PTR_ERR(new);
goto out_put;
goto out_err;
}
atomic_inc(&clnt->cl_count);
@ -525,8 +522,6 @@ static struct rpc_clnt *__rpc_clone_client(struct rpc_create_args *args,
new->cl_chatty = clnt->cl_chatty;
return new;
out_put:
xprt_put(xprt);
out_err:
dprintk("RPC: %s: returned error %d\n", __func__, err);
return ERR_PTR(err);