[PATCH] dma-buf: balance refcount inbalance

[j***@redhat.com]

From: Jérôme Glisse <***@redhat.com>

The debugfs take reference on fence without dropping them.

Signed-off-by: Jérôme Glisse <***@redhat.com>
Cc: Christian König <***@amd.com>
Cc: Daniel Vetter <***@ffwll.ch>
Cc: Sumit Semwal <***@linaro.org>
Cc: linux-***@vger.kernel.org
Cc: dri-***@lists.freedesktop.org
Cc: linaro-mm-***@lists.linaro.org
Cc: Stéphane Marchesin <***@chromium.org>
Cc: ***@vger.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();

[Koenig, Christian]

Post by j***@redhat.com
The debugfs take reference on fence without dropping them.
---
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();

[Sasha Levin]

Hi,

[This is an automated email]

This commit has been processed because it contains a -stable tag.
The stable tag indicates that it's relevant for the following trees: all

The bot has tested the following trees: v4.19.7, v4.14.86, v4.9.143, v4.4.166, v3.18.128,

v4.19.7: Build OK!
v4.14.86: Build OK!
v4.9.143: Failed to apply! Possible dependencies:
5eb2c72c8acc ("dma-buf: fence debugging")

v4.4.166: Failed to apply! Possible dependencies:
5eb2c72c8acc ("dma-buf: fence debugging")

v3.18.128: Failed to apply! Possible dependencies:
5eb2c72c8acc ("dma-buf: fence debugging")


How should we proceed with this patch?

--
Thanks,
Sasha