[PATCH AUTOSEL 4.20 034/105] xprtrdma: Double free in rpcrdma_sendctxs_create()

Sasha Levin
2019-02-13T02:34:22Z

From: Dan Carpenter <dan.carpenter@oracle.com>

[ Upstream commit 6e17f58c486d9554341f70aa5b63b8fbed07b3fa ]

The clean up is handled by the caller, rpcrdma_buffer_create(), so this
call to rpcrdma_sendctxs_destroy() leads to a double free.

Fixes: ae72950abf99 ("xprtrdma: Add data structure to manage RDMA Send arguments")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/sunrpc/xprtrdma/verbs.c | 6 +-----
1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c
index b9bc7f9f6bb9..4ffa6db804bb 100644
--- a/net/sunrpc/xprtrdma/verbs.c
+++ b/net/sunrpc/xprtrdma/verbs.c
@@ -913,17 +913,13 @@ static int rpcrdma_sendctxs_create(struct rpcrdma_xprt *r_xprt)
for (i = 0; i <= buf->rb_sc_last; i++) {
sc = rpcrdma_sendctx_create(&r_xprt->rx_ia);
if (!sc)
- goto out_destroy;
+ return -ENOMEM;

sc->sc_xprt = r_xprt;
buf->rb_sc_ctxs[i] = sc;
}

return 0;
-
-out_destroy:
- rpcrdma_sendctxs_destroy(buf);
- return -ENOMEM;
}

/* The sendctx queue is not guaranteed to have a size that is a
--
2.19.1