linux-kernel - [PATCH AUTOSEL 5.8 05/62] drm/amdgpu: fix RAS memory leak in error case

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Message-Id: <20200821161423.347071-5-sashal@kernel.org>
Date:   Fri, 21 Aug 2020 12:13:26 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Guchun Chen <guchun.chen@....com>, Tao Zhou <tao.zhou1@....com>,
        Alex Deucher <alexander.deucher@....com>,
        Sasha Levin <sashal@...nel.org>, amd-gfx@...ts.freedesktop.org,
        dri-devel@...ts.freedesktop.org
Subject: [PATCH AUTOSEL 5.8 05/62] drm/amdgpu: fix RAS memory leak in error case

From: Guchun Chen <guchun.chen@....com>

[ Upstream commit 5e91160ac0b5cfbbaeb62cbff8b069262095f744 ]

RAS context memory needs to freed in failure case.

Signed-off-by: Guchun Chen <guchun.chen@....com>
Reviewed-by: Tao Zhou <tao.zhou1@....com>
Signed-off-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c | 19 ++++++++++---------
 1 file changed, 10 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
index 50fe08bf2f727..20a7d75b2eb88 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
@@ -1914,9 +1914,8 @@ int amdgpu_ras_init(struct amdgpu_device *adev)
 	amdgpu_ras_check_supported(adev, &con->hw_supported,
 			&con->supported);
 	if (!con->hw_supported) {
-		amdgpu_ras_set_context(adev, NULL);
-		kfree(con);
-		return 0;
+		r = 0;
+		goto err_out;
 	}
 
 	con->features = 0;
@@ -1927,29 +1926,31 @@ int amdgpu_ras_init(struct amdgpu_device *adev)
 	if (adev->nbio.funcs->init_ras_controller_interrupt) {
 		r = adev->nbio.funcs->init_ras_controller_interrupt(adev);
 		if (r)
-			return r;
+			goto err_out;
 	}
 
 	if (adev->nbio.funcs->init_ras_err_event_athub_interrupt) {
 		r = adev->nbio.funcs->init_ras_err_event_athub_interrupt(adev);
 		if (r)
-			return r;
+			goto err_out;
 	}
 
 	amdgpu_ras_mask &= AMDGPU_RAS_BLOCK_MASK;
 
-	if (amdgpu_ras_fs_init(adev))
-		goto fs_out;
+	if (amdgpu_ras_fs_init(adev)) {
+		r = -EINVAL;
+		goto err_out;
+	}
 
 	dev_info(adev->dev, "RAS INFO: ras initialized successfully, "
 			"hardware ability[%x] ras_mask[%x]\n",
 			con->hw_supported, con->supported);
 	return 0;
-fs_out:
+err_out:
 	amdgpu_ras_set_context(adev, NULL);
 	kfree(con);
 
-	return -EINVAL;
+	return r;
 }
 
 /* helper function to handle common stuff in ip late init phase */
-- 
2.25.1