[PATCH] drm/amdgpu: fix multiple memory leaks

From: Navid Emamdoost <navid.emamdoost@gmail.com>
To: unlisted-recipients:; (no To-header on input)
Cc: emamd001@umn.edu, smccaman@umn.edu, kjlu@umn.edu,
	"Navid Emamdoost" <navid.emamdoost@gmail.com>,
	"Alex Deucher" <alexander.deucher@amd.com>,
	"Christian König" <christian.koenig@amd.com>,
	"David (ChunMing) Zhou" <David1.Zhou@amd.com>,
	"David Airlie" <airlied@linux.ie>,
	"Daniel Vetter" <daniel@ffwll.ch>, "Rex Zhu" <Rex.Zhu@amd.com>,
	"Sam Ravnborg" <sam@ravnborg.org>,
	amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH] drm/amdgpu: fix multiple memory leaks
Date: Wed, 18 Sep 2019 11:09:41 -0500	[thread overview]
Message-ID: <20190918160943.14105-1-navid.emamdoost@gmail.com> (raw)

In acp_hw_init there are some allocations that needs to be released in
case of failure:

1- adev->acp.acp_genpd should be released if any allocation attemp for
adev->acp.acp_cell, adev->acp.acp_res or i2s_pdata fails.
2- all of those allocations should be released if pm_genpd_add_device
fails.

Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c
index eba42c752bca..dd3fa85b11c5 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c
@@ -231,17 +231,21 @@ static int acp_hw_init(void *handle)
 	adev->acp.acp_cell = kcalloc(ACP_DEVS, sizeof(struct mfd_cell),
 							GFP_KERNEL);
 
-	if (adev->acp.acp_cell == NULL)
+	if (adev->acp.acp_cell == NULL) {
+		kfree(adev->acp.acp_genpd);
 		return -ENOMEM;
+	}
 
 	adev->acp.acp_res = kcalloc(5, sizeof(struct resource), GFP_KERNEL);
 	if (adev->acp.acp_res == NULL) {
+		kfree(adev->acp.acp_genpd);
 		kfree(adev->acp.acp_cell);
 		return -ENOMEM;
 	}
 
 	i2s_pdata = kcalloc(3, sizeof(struct i2s_platform_data), GFP_KERNEL);
 	if (i2s_pdata == NULL) {
+		kfree(adev->acp.acp_genpd);
 		kfree(adev->acp.acp_res);
 		kfree(adev->acp.acp_cell);
 		return -ENOMEM;
@@ -348,6 +352,10 @@ static int acp_hw_init(void *handle)
 		r = pm_genpd_add_device(&adev->acp.acp_genpd->gpd, dev);
 		if (r) {
 			dev_err(dev, "Failed to add dev to genpd\n");
+			kfree(adev->acp.acp_genpd);
+			kfree(adev->acp.acp_res);
+			kfree(adev->acp.acp_cell);
+			kfree(i2s_pdata);
 			return r;
 		}
 	}
-- 
2.17.1

