diff options
| author | Ben Greear <greearb@candelatech.com> | 2011-07-12 10:27:55 -0700 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2011-07-12 13:40:13 -0400 |
| commit | ec0dd267bf7d08cb30e321e45a75fd40edd7e528 (patch) | |
| tree | 3bf48630b67c339e968c80965e9696027393c968 /net/sunrpc/rpcb_clnt.c | |
| parent | e5012d1f3861d18c7f3814e757c1c3ab3741dbcd (diff) | |
| download | linux-ec0dd267bf7d08cb30e321e45a75fd40edd7e528.tar.gz | |
SUNRPC: Fix use of static variable in rpcb_getport_async
Because struct rpcbind_args *map was declared static, if two threads entered this method at the same time, the values assigned to map could be sent two two differen tasks. This could cause all sorts of problems, include use-after-free and double-free of memory. Fix this by removing the static declaration so that the map pointer is on the stack. Signed-off-by: Ben Greear <greearb@candelatech.com> Cc: stable@kernel.org Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'net/sunrpc/rpcb_clnt.c')
| -rw-r--r-- | net/sunrpc/rpcb_clnt.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/sunrpc/rpcb_clnt.c b/net/sunrpc/rpcb_clnt.c index 9a80a922c527..e45d2fbbe5a8 100644 --- a/net/sunrpc/rpcb_clnt.c +++ b/net/sunrpc/rpcb_clnt.c @@ -597,7 +597,7 @@ void rpcb_getport_async(struct rpc_task *task) u32 bind_version; struct rpc_xprt *xprt; struct rpc_clnt *rpcb_clnt; - static struct rpcbind_args *map; + struct rpcbind_args *map; struct rpc_task *child; struct sockaddr_storage addr; struct sockaddr *sap = (struct sockaddr *)&addr; |