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drm/amdgpu: Fix the null pointer when load rlc firmware

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commit bc03c02cc1 upstream.

If the RLC firmware is invalid because of wrong header size,
the pointer to the rlc firmware is released in function
amdgpu_ucode_request. There will be a null pointer error
in subsequent use. So skip validation to fix it.

Fixes: 3da9b71563 ("drm/amd: Use `amdgpu_ucode_*` helpers for GFX10")
Signed-off-by: Ma Jun <Jun.Ma2@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ma Jun 2024-01-12 13:33:24 +08:00 committed by Greg Kroah-Hartman
parent e256f6d364
commit 8b5bacce2d
1 changed files with 6 additions and 9 deletions
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15
drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
View file

@ -3989,16 +3989,13 @@ static int gfx_v10_0_init_microcode(struct amdgpu_device *adev)
if (!amdgpu_sriov_vf(adev)) {
snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_rlc.bin", ucode_prefix);
err = amdgpu_ucode_request(adev, &adev->gfx.rlc_fw, fw_name);
/* don't check this. There are apparently firmwares in the wild with
* incorrect size in the header
*/
if (err == -ENODEV)
goto out;
err = request_firmware(&adev->gfx.rlc_fw, fw_name, adev->dev);
if (err)
dev_dbg(adev->dev,
"gfx10: amdgpu_ucode_request() failed \"%s\"\n",
fw_name);
goto out;
/* don't validate this firmware. There are apparently firmwares
* in the wild with incorrect size in the header
*/
rlc_hdr = (const struct rlc_firmware_header_v2_0 *)adev->gfx.rlc_fw->data;
version_major = le16_to_cpu(rlc_hdr->header.header_version_major);
version_minor = le16_to_cpu(rlc_hdr->header.header_version_minor);