linux-kernel - [PATCH AUTOSEL 5.19 10/33] drm/amdgpu: fix hive reference leak when adding xgmi device

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Date:   Tue, 30 Aug 2022 13:18:01 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     YiPeng Chai <YiPeng.Chai@....com>,
        Hawking Zhang <Hawking.Zhang@....com>,
        Alex Deucher <alexander.deucher@....com>,
        Sasha Levin <sashal@...nel.org>, christian.koenig@....com,
        Xinhui.Pan@....com, airlied@...ux.ie, daniel@...ll.ch,
        andrey.grodzovsky@....com, guchun.chen@....com,
        shaoyun.liu@....com, Amaranath.Somalapuram@....com,
        lang.yu@....com, amd-gfx@...ts.freedesktop.org,
        dri-devel@...ts.freedesktop.org
Subject: [PATCH AUTOSEL 5.19 10/33] drm/amdgpu: fix hive reference leak when adding xgmi device

From: YiPeng Chai <YiPeng.Chai@....com>

[ Upstream commit f5994da72ba124a3d0463672fdfbec073e3bb72f ]

Only amdgpu_get_xgmi_hive but no amdgpu_put_xgmi_hive
which will leak the hive reference.

Signed-off-by: YiPeng Chai <YiPeng.Chai@....com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@....com>
Signed-off-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 3adebb63680e0..ea2b74c0fd229 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -2482,12 +2482,14 @@ static int amdgpu_device_ip_init(struct amdgpu_device *adev)
 			if (!hive->reset_domain ||
 			    !amdgpu_reset_get_reset_domain(hive->reset_domain)) {
 				r = -ENOENT;
+				amdgpu_put_xgmi_hive(hive);
 				goto init_failed;
 			}
 
 			/* Drop the early temporary reset domain we created for device */
 			amdgpu_reset_put_reset_domain(adev->reset_domain);
 			adev->reset_domain = hive->reset_domain;
+			amdgpu_put_xgmi_hive(hive);
 		}
 	}
 
-- 
2.35.1