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SUNRPC: Fix races between socket connection and destroy code 

When we're destroying the socket transport, we need to ensure that
we cancel any existing delayed connection attempts, and order them
w.r.t. the call to xs_close().

Reported-by:"Suzuki K. Poulose" <suzuki.poulose@arm.com>
Acked-by: Jeff Layton <jlayton@poochiereds.net>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
This commit is contained in:
Trond Myklebust 2015-09-17 10:42:27 -04:00
parent 048883e0b9
commit 03c78827db
1 changed files with 3 additions and 0 deletions
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3
net/sunrpc/xprtsock.c
View File

@ -881,8 +881,11 @@ static void xs_xprt_free(struct rpc_xprt *xprt)
*/
static void xs_destroy(struct rpc_xprt *xprt)
{
struct sock_xprt *transport = container_of(xprt,
struct sock_xprt, xprt);
dprintk("RPC: xs_destroy xprt %p\n", xprt);
cancel_delayed_work_sync(&transport->connect_worker);
xs_close(xprt);
xs_xprt_free(xprt);
module_put(THIS_MODULE);