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From: Dan Carpenter <dan.carpenter@oracle.com>
To: Bernard Metzler <bmt@zurich.ibm.com>
Cc: Doug Ledford <dledford@redhat.com>,
	Jason Gunthorpe <jgg@ziepe.ca>,
	linux-rdma@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: [PATCH] RDMA/siw: Fix a memory leak in siw_init_cpulist()
Date: Fri, 9 Aug 2019 13:16:19 +0300
Message-ID: <20190809101619.GB17867@mwanda> (raw)

The error handling code doesn't free siw_cpu_info.tx_valid_cpus[0].  The
first iteration through the loop is a no-op so this is sort of an off by
one bug.

Fixes: bdcf26bf9b3a ("rdma/siw: network and RDMA core interface")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
 drivers/infiniband/sw/siw/siw_main.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/infiniband/sw/siw/siw_main.c b/drivers/infiniband/sw/siw/siw_main.c
index d0f140daf659..95ace3967391 100644
--- a/drivers/infiniband/sw/siw/siw_main.c
+++ b/drivers/infiniband/sw/siw/siw_main.c
@@ -160,9 +160,9 @@ static int siw_init_cpulist(void)
 
 out_err:
 	siw_cpu_info.num_nodes = 0;
-	while (i) {
+	while (--i >= 0) {
 		kfree(siw_cpu_info.tx_valid_cpus[i]);
-		siw_cpu_info.tx_valid_cpus[i--] = NULL;
+		siw_cpu_info.tx_valid_cpus[i] = NULL;
 	}
 	kfree(siw_cpu_info.tx_valid_cpus);
 	siw_cpu_info.tx_valid_cpus = NULL;
-- 
2.20.1


             reply index

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-09 10:16 Dan Carpenter [this message]
2019-08-09 11:44 ` Bernard Metzler
2019-08-09 11:59   ` Dan Carpenter
2019-08-09 14:09   ` [PATCH v2] " Dan Carpenter
2019-08-09 14:28     ` Bernard Metzler
2019-08-12 14:53       ` Doug Ledford

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