linux-kernel - [PATCH 3.11 171/182] drm/radeon: memory leak on bo reservation failure. v2

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Message-Id: <1398329507-5911-172-git-send-email-luis.henriques@canonical.com>
Date:	Thu, 24 Apr 2014 09:51:36 +0100
From:	Luis Henriques <luis.henriques@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Christian König <christian.koenig@....com>,
	Alex Deucher <alexander.deucher@....com>,
	Quentin Casasnovas <quentin.casasnovas@...cle.com>,
	Luis Henriques <luis.henriques@...onical.com>
Subject: [PATCH 3.11 171/182] drm/radeon: memory leak on bo reservation failure. v2

3.11.10.9 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Quentin Casasnovas <quentin.casasnovas@...cle.com>

commit 74073c9dd29905645feb6dee03c144657a9844cd upstream.

On bo reservation failure, we end up leaking fpriv.

v2 (chk): rebased and added missing free on vm failure as well

Fixes: 5e386b574cf7e1 ("drm/radeon: fix missing bo reservation")
Cc: Christian König <christian.koenig@....com>
Cc: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Quentin Casasnovas <quentin.casasnovas@...cle.com>
Signed-off-by: Christian König <christian.koenig@....com>
[ luis: backported to 3.11:
  - radeon_vm_init() returns a value only after commit 6d2f294
    "drm/radeon: use normal BOs for the page tables v4", which is not
    in 3.11 kernel, thus dropped 1st chunk of commit ]
Signed-off-by: Luis Henriques <luis.henriques@...onical.com>
---
 drivers/gpu/drm/radeon/radeon_kms.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/radeon/radeon_kms.c b/drivers/gpu/drm/radeon/radeon_kms.c
index 42ff84b..82b8710 100644
--- a/drivers/gpu/drm/radeon/radeon_kms.c
+++ b/drivers/gpu/drm/radeon/radeon_kms.c
@@ -505,8 +505,11 @@ int radeon_driver_open_kms(struct drm_device *dev, struct drm_file *file_priv)
 		radeon_vm_init(rdev, &fpriv->vm);
 
 		r = radeon_bo_reserve(rdev->ring_tmp_bo.bo, false);
-		if (r)
+		if (r) {
+			radeon_vm_fini(rdev, &fpriv->vm);
+			kfree(fpriv);
 			return r;
+		}
 
 		/* map the ib pool buffer read only into
 		 * virtual address space */
-- 
1.9.1

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