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From: Kevin Laatz <kevin.laatz@intel.com>
To: dev@dpdk.org
Cc: Kevin Laatz <kevin.laatz@intel.com>,
	stable@dpdk.org, bruce.richardson@intel.com,
	Conor Walsh <conor.walsh@intel.com>
Subject: [PATCH 2/5] dma/idxd: fix memory leak due to free on incorrect pointer
Date: Fri,  8 Apr 2022 15:15:01 +0100	[thread overview]
Message-ID: <20220408141504.1319913-3-kevin.laatz@intel.com> (raw)
In-Reply-To: <20220408141504.1319913-1-kevin.laatz@intel.com>

During PCI device close, any allocated memory needs to be free'd.
Currently, one of the free's is being called on an incorrect idxd_dmadev
struct member, namely 'batch_idx_ring', causing a memleak from the
pointer that should have been free'd.
This patch fixes this memleak by calling free on the correct pointer.

Fixes: 9449330a8458 ("dma/idxd: create dmadev instances on PCI probe")
Cc: stable@dpdk.org
Cc: bruce.richardson@intel.com

Signed-off-by: Kevin Laatz <kevin.laatz@intel.com>
---
 drivers/dma/idxd/idxd_pci.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/dma/idxd/idxd_pci.c b/drivers/dma/idxd/idxd_pci.c
index 7036eb938d..fdb1f15750 100644
--- a/drivers/dma/idxd/idxd_pci.c
+++ b/drivers/dma/idxd/idxd_pci.c
@@ -130,7 +130,7 @@ idxd_pci_dev_close(struct rte_dma_dev *dev)
 
 	/* free device memory */
 	IDXD_PMD_DEBUG("Freeing device driver memory");
-	rte_free(idxd->batch_idx_ring);
+	rte_free(idxd->batch_comp_ring);
 	rte_free(idxd->desc_ring);
 
 	/* if this is the last WQ on the device, disable the device and free
-- 
2.31.1


  parent reply	other threads:[~2022-04-08 14:15 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-04-08 14:14 [PATCH 0/5] Fix IDXD PCI device close Kevin Laatz
2022-04-08 14:15 ` [PATCH 1/5] dma/idxd: fix memory leak in pci close Kevin Laatz
2022-04-08 14:49   ` Bruce Richardson
2022-04-08 14:15 ` Kevin Laatz [this message]
2022-04-08 14:52   ` [PATCH 2/5] dma/idxd: fix memory leak due to free on incorrect pointer Bruce Richardson
2022-04-19 16:20     ` Kevin Laatz
2022-04-08 14:15 ` [PATCH 3/5] app/test: close dma devices during cleanup Kevin Laatz
2022-04-08 14:55   ` Bruce Richardson
2022-04-19 16:18     ` Kevin Laatz
2022-04-08 14:15 ` [PATCH 4/5] app/testpmd: stop and close dmadevs at exit Kevin Laatz
2022-04-12 13:36   ` Bruce Richardson
2022-04-08 14:15 ` [PATCH 5/5] examples/dma: fix missing dma close Kevin Laatz
2022-05-31 16:17 ` [PATCH 0/5] Fix IDXD PCI device close Thomas Monjalon
2022-05-31 16:37   ` Kevin Laatz
2022-06-01 17:10     ` Kevin Laatz
2022-07-03 12:22 ` [PATCH v2 0/3] " Kevin Laatz
2022-07-03 12:22   ` [PATCH v2 1/3] dma/idxd: fix memory leak in pci close Kevin Laatz
2022-07-04 13:19     ` Bruce Richardson
2022-07-04 13:34       ` Kevin Laatz
2022-07-04 13:44         ` Bruce Richardson
2022-07-03 12:22   ` [PATCH v2 2/3] dma/idxd: fix memory leak due to free on incorrect pointer Kevin Laatz
2022-07-04 13:23     ` Bruce Richardson
2022-07-04 13:25       ` Bruce Richardson
2022-07-03 12:22   ` [PATCH v2 3/3] dma/idxd: fix null pointer dereference during pci remove Kevin Laatz
2022-07-04 13:25     ` Bruce Richardson
2022-07-04 15:27 ` [PATCH v3 0/3] Fix IDXD PCI device close Kevin Laatz
2022-07-04 15:27   ` [PATCH v3 1/3] dma/idxd: fix memory leak in pci close Kevin Laatz
2022-07-04 15:39     ` Bruce Richardson
2022-07-04 15:27   ` [PATCH v3 2/3] dma/idxd: fix memory leak due to free on incorrect pointer Kevin Laatz
2022-07-04 15:27   ` [PATCH v3 3/3] dma/idxd: fix null pointer dereference during pci remove Kevin Laatz
2022-07-05 19:09   ` [PATCH v3 0/3] Fix IDXD PCI device close Thomas Monjalon

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