From: Ma Jun <Jun.Ma2@amd.com>
To: <amd-gfx@lists.freedesktop.org>
Cc: <Kenneth.Feng@amd.com>, <Alexander.Deucher@amd.com>,
<kevinyang.wang@amd.com>, <christian.koenig@amd.com>,
Ma Jun <Jun.Ma2@amd.com>
Subject: [PATCH 1/2] drm/amdgpu: Fix uninitialized variable warning in amdgpu_info_ioctl
Date: Mon, 6 May 2024 17:56:29 +0800 [thread overview]
Message-ID: <20240506095630.258594-1-Jun.Ma2@amd.com> (raw)
Check the return value of amdgpu_xcp_get_inst_details, otherwise we
may use an uninitialized variable inst_mask
Signed-off-by: Ma Jun <Jun.Ma2@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
index a0ea6fe8d060..977cde6d1362 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
@@ -623,25 +623,32 @@ int amdgpu_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
switch (type) {
case AMD_IP_BLOCK_TYPE_GFX:
ret = amdgpu_xcp_get_inst_details(xcp, AMDGPU_XCP_GFX, &inst_mask);
+ if (ret)
+ return ret;
count = hweight32(inst_mask);
break;
case AMD_IP_BLOCK_TYPE_SDMA:
ret = amdgpu_xcp_get_inst_details(xcp, AMDGPU_XCP_SDMA, &inst_mask);
+ if (ret)
+ return ret;
count = hweight32(inst_mask);
break;
case AMD_IP_BLOCK_TYPE_JPEG:
ret = amdgpu_xcp_get_inst_details(xcp, AMDGPU_XCP_VCN, &inst_mask);
+ if (ret)
+ return ret;
count = hweight32(inst_mask) * adev->jpeg.num_jpeg_rings;
break;
case AMD_IP_BLOCK_TYPE_VCN:
ret = amdgpu_xcp_get_inst_details(xcp, AMDGPU_XCP_VCN, &inst_mask);
+ if (ret)
+ return ret;
count = hweight32(inst_mask);
break;
default:
return -EINVAL;
}
- if (ret)
- return ret;
+
return copy_to_user(out, &count, min(size, 4u)) ? -EFAULT : 0;
}
--
2.34.1
next reply other threads:[~2024-05-06 9:57 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-06 9:56 Ma Jun [this message]
2024-05-06 9:56 ` [PATCH 2/2] drm/amdgpu/pm: Fix the param type of set_power_profile_mode Ma Jun
2024-05-06 15:21 ` [PATCH 1/2] drm/amdgpu: Fix uninitialized variable warning in amdgpu_info_ioctl Alex Deucher
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