linux-kernel - [PATCH] dma-buf: balance refcount inbalance

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-next>] [day] [month] [year] [list]

Message-Id: <20181206161840.6578-1-jglisse@redhat.com>
Date:   Thu,  6 Dec 2018 11:18:40 -0500
From:   jglisse@...hat.com
To:     linux-kernel@...r.kernel.org
Cc:     Jérôme Glisse <jglisse@...hat.com>,
        Christian König <christian.koenig@....com>,
        Daniel Vetter <daniel.vetter@...ll.ch>,
        Sumit Semwal <sumit.semwal@...aro.org>,
        linux-media@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linaro-mm-sig@...ts.linaro.org,
        Stéphane Marchesin <marcheu@...omium.org>,
        stable@...r.kernel.org
Subject: [PATCH] dma-buf: balance refcount inbalance

From: Jérôme Glisse <jglisse@...hat.com>

The debugfs take reference on fence without dropping them.

Signed-off-by: Jérôme Glisse <jglisse@...hat.com>
Cc: Christian König <christian.koenig@....com>
Cc: Daniel Vetter <daniel.vetter@...ll.ch>
Cc: Sumit Semwal <sumit.semwal@...aro.org>
Cc: linux-media@...r.kernel.org
Cc: dri-devel@...ts.freedesktop.org
Cc: linaro-mm-sig@...ts.linaro.org
Cc: Stéphane Marchesin <marcheu@...omium.org>
Cc: stable@...r.kernel.org
---
 drivers/dma-buf/dma-buf.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c
index 13884474d158..69842145c223 100644
--- a/drivers/dma-buf/dma-buf.c
+++ b/drivers/dma-buf/dma-buf.c
@@ -1069,6 +1069,7 @@ static int dma_buf_debug_show(struct seq_file *s, void *unused)
 				   fence->ops->get_driver_name(fence),
 				   fence->ops->get_timeline_name(fence),
 				   dma_fence_is_signaled(fence) ? "" : "un");
+			dma_fence_put(fence);
 		}
 		rcu_read_unlock();
 
-- 
2.17.2