linux-kernel - [PATCH 4/5] dmaengine: hsu: Fix memory leak when stopping a running transfer

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <1427456155-28990-5-git-send-email-peter.ujfalusi@ti.com>
Date:	Fri, 27 Mar 2015 13:35:54 +0200
From:	Peter Ujfalusi <peter.ujfalusi@...com>
To:	<vinod.koul@...el.com>, <linux@....linux.org.uk>
CC:	<dan.j.williams@...el.com>, <dmaengine@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: [PATCH 4/5] dmaengine: hsu: Fix memory leak when stopping a running transfer

The vd->node is removed from the lists when the transfer started so the
vchan_get_all_descriptors() will not find it. This results memory leak.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@...com>
CC: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/dma/hsu/hsu.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/dma/hsu/hsu.c b/drivers/dma/hsu/hsu.c
index 683ba9b62795..d1864bda008f 100644
--- a/drivers/dma/hsu/hsu.c
+++ b/drivers/dma/hsu/hsu.c
@@ -387,7 +387,10 @@ static int hsu_dma_terminate_all(struct dma_chan *chan)
 	spin_lock_irqsave(&hsuc->vchan.lock, flags);
 
 	hsu_dma_stop_channel(hsuc);
-	hsuc->desc = NULL;
+	if (hsuc->desc) {
+		hsu_dma_desc_free(&hsuc->desc->vchan);
+		hsuc->desc = NULL;
+	}
 
 	vchan_get_all_descriptors(&hsuc->vchan, &head);
 	spin_unlock_irqrestore(&hsuc->vchan.lock, flags);
-- 
2.3.3

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/