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From: Dan Carpenter <dan.carpenter@oracle.com>
To: "J. Bruce Fields" <bfields@fieldses.org>,
	Chuck Lever <chuck.lever@oracle.com>
Cc: Jeff Layton <jlayton@kernel.org>,
	Trond Myklebust <trond.myklebust@hammerspace.com>,
	Anna Schumaker <anna.schumaker@netapp.com>,
	linux-nfs@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: [PATCH 2/2] xprtrdma: Double free in rpcrdma_sendctxs_create()
Date: Sat, 05 Jan 2019 13:06:48 +0000	[thread overview]
Message-ID: <20190105130648.GC3288@kadam> (raw)

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>
---
 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 3dde05892c8e..4994e75945b8 100644
--- a/net/sunrpc/xprtrdma/verbs.c
+++ b/net/sunrpc/xprtrdma/verbs.c
@@ -845,17 +845,13 @@ 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
-- 
2.17.1

WARNING: multiple messages have this Message-ID (diff)
From: Dan Carpenter <dan.carpenter@oracle.com>
To: "J. Bruce Fields" <bfields@fieldses.org>,
	Chuck Lever <chuck.lever@oracle.com>
Cc: Jeff Layton <jlayton@kernel.org>,
	Trond Myklebust <trond.myklebust@hammerspace.com>,
	Anna Schumaker <anna.schumaker@netapp.com>,
	linux-nfs@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: [PATCH 2/2] xprtrdma: Double free in rpcrdma_sendctxs_create()
Date: Sat, 5 Jan 2019 16:06:48 +0300	[thread overview]
Message-ID: <20190105130648.GC3288@kadam> (raw)

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>
---
 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 3dde05892c8e..4994e75945b8 100644
--- a/net/sunrpc/xprtrdma/verbs.c
+++ b/net/sunrpc/xprtrdma/verbs.c
@@ -845,17 +845,13 @@ 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
-- 
2.17.1


             reply	other threads:[~2019-01-05 13:06 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-01-05 13:06 Dan Carpenter [this message]
2019-01-05 13:06 ` [PATCH 2/2] xprtrdma: Double free in rpcrdma_sendctxs_create() Dan Carpenter
2019-01-05 16:24 ` Chuck Lever
2019-01-05 16:24   ` Chuck Lever
2019-01-07 17:22   ` Bruce Fields
2019-01-07 17:22     ` Bruce Fields
2019-01-07 22:21     ` Schumaker, Anna
2019-01-07 22:21       ` Schumaker, Anna
2019-01-07 18:41   ` Dan Carpenter
2019-01-07 18:41     ` Dan Carpenter
2019-01-07 19:08   ` [PATCH] xprtrdma: Make rpcrdma_sendctxs_destroy() more robust Dan Carpenter
2019-01-07 19:08     ` Dan Carpenter
2019-01-07 21:25     ` Chuck Lever
2019-01-07 21:25       ` Chuck Lever

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