This is a note to let you know that I've just added the patch titled
xprtrdma: fix pointer derefs in error cases of rpcrdma_ep_create
to the 5.16-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
xprtrdma-fix-pointer-derefs-in-error-cases-of-rpcrdm.patch
and it can be found in the queue-5.16 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 8186536fe7a11a692631416d0bbfff206ec38900
Author: Dan Aloni <dan.aloni@xxxxxxxxxxxx>
Date: Tue Jan 25 22:06:46 2022 +0200
xprtrdma: fix pointer derefs in error cases of rpcrdma_ep_create
[ Upstream commit a9c10b5b3b67b3750a10c8b089b2e05f5e176e33 ]
If there are failures then we must not leave the non-NULL pointers with
the error value, otherwise `rpcrdma_ep_destroy` gets confused and tries
free them, resulting in an Oops.
Signed-off-by: Dan Aloni <dan.aloni@xxxxxxxxxxxx>
Acked-by: Chuck Lever <chuck.lever@xxxxxxxxxx>
Signed-off-by: Anna Schumaker <Anna.Schumaker@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c
index 3d3673ba9e1e5..2a2e1514ac79a 100644
--- a/net/sunrpc/xprtrdma/verbs.c
+++ b/net/sunrpc/xprtrdma/verbs.c
@@ -436,6 +436,7 @@ static int rpcrdma_ep_create(struct rpcrdma_xprt *r_xprt)
IB_POLL_WORKQUEUE);
if (IS_ERR(ep->re_attr.send_cq)) {
rc = PTR_ERR(ep->re_attr.send_cq);
+ ep->re_attr.send_cq = NULL;
goto out_destroy;
}
@@ -444,6 +445,7 @@ static int rpcrdma_ep_create(struct rpcrdma_xprt *r_xprt)
IB_POLL_WORKQUEUE);
if (IS_ERR(ep->re_attr.recv_cq)) {
rc = PTR_ERR(ep->re_attr.recv_cq);
+ ep->re_attr.recv_cq = NULL;
goto out_destroy;
}
ep->re_receive_count = 0;
@@ -482,6 +484,7 @@ static int rpcrdma_ep_create(struct rpcrdma_xprt *r_xprt)
ep->re_pd = ib_alloc_pd(device, 0);
if (IS_ERR(ep->re_pd)) {
rc = PTR_ERR(ep->re_pd);
+ ep->re_pd = NULL;
goto out_destroy;
}
