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Message-ID: <20240728154927.2050160-2-sashal@kernel.org>
Date: Sun, 28 Jul 2024 11:49:00 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
stable@...r.kernel.org
Cc: Ma Jun <Jun.Ma2@....com>,
Lijo Lazar <lijo.lazar@....com>,
Alex Deucher <alexander.deucher@....com>,
Sasha Levin <sashal@...nel.org>,
christian.koenig@....com,
Xinhui.Pan@....com,
airlied@...il.com,
daniel@...ll.ch,
Hawking.Zhang@....com,
tao.zhou1@....com,
kevinyang.wang@....com,
YiPeng.Chai@....com,
Stanley.Yang@....com,
candice.li@....com,
amd-gfx@...ts.freedesktop.org,
dri-devel@...ts.freedesktop.org
Subject: [PATCH AUTOSEL 5.15 02/10] drm/amdgpu: Fix the null pointer dereference to ras_manager
From: Ma Jun <Jun.Ma2@....com>
[ Upstream commit 4c11d30c95576937c6c35e6f29884761f2dddb43 ]
Check ras_manager before using it
Signed-off-by: Ma Jun <Jun.Ma2@....com>
Reviewed-by: Lijo Lazar <lijo.lazar@....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 | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
index c963b87014b69..92a4f07858785 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
@@ -1509,12 +1509,15 @@ static void amdgpu_ras_interrupt_process_handler(struct work_struct *work)
int amdgpu_ras_interrupt_dispatch(struct amdgpu_device *adev,
struct ras_dispatch_if *info)
{
- struct ras_manager *obj = amdgpu_ras_find_obj(adev, &info->head);
- struct ras_ih_data *data = &obj->ih_data;
+ struct ras_manager *obj;
+ struct ras_ih_data *data;
+ obj = amdgpu_ras_find_obj(adev, &info->head);
if (!obj)
return -EINVAL;
+ data = &obj->ih_data;
+
if (data->inuse == 0)
return 0;
--
2.43.0
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