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Srinivasan Shanmugam
e35ba81bb3
This commit fixes multiple potential truncations when writing the
strings _pfp.bin, _me.bin, _rlc.bin, and _mec.bin into the fw_name
buffer in the gfx_v12_0_init_microcode function in the gfx_v12_0.c file
The ucode_prefix size was reduced from 30 to 15 to ensure the snprintf
function does not exceed the size of the fw_name buffer.
Thus fixing the below with gcc W=1:
drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c: In function ‘gfx_v12_0_early_init’:
drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c:421:54: warning: ‘_pfp.bin’ directive output may be truncated writing 8 bytes into a region of size between 4 and 33 [-Wformat-truncation=]
421 | snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_pfp.bin", ucode_prefix);
| ^~~~~~~~
drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c:421:9: note: ‘snprintf’ output between 16 and 45 bytes into a destination of size 40
421 | snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_pfp.bin", ucode_prefix);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c:428:54: warning: ‘_me.bin’ directive output may be truncated writing 7 bytes into a region of size between 4 and 33 [-Wformat-truncation=]
428 | snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_me.bin", ucode_prefix);
| ^~~~~~~
drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c:428:9: note: ‘snprintf’ output between 15 and 44 bytes into a destination of size 40
428 | snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_me.bin", ucode_prefix);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c:436:62: warning: ‘_rlc.bin’ directive output may be truncated writing 8 bytes into a region of size between 4 and 33 [-Wformat-truncation=]
436 | snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_rlc.bin", ucode_prefix);
| ^~~~~~~~
drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c:436:17: note: ‘snprintf’ output between 16 and 45 bytes into a destination of size 40
436 | snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_rlc.bin", ucode_prefix);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c:448:54: warning: ‘_mec.bin’ directive output may be truncated writing 8 bytes into a region of size between 4 and 33 [-Wformat-truncation=]
448 | snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_mec.bin", ucode_prefix);
| ^~~~~~~~
drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c:448:9: note: ‘snprintf’ output between 16 and 45 bytes into a destination of size 40
448 | snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_mec.bin", ucode_prefix);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Cc: Lijo Lazar <lijo.lazar@amd.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Srinivasan Shanmugam <srinivasan.shanmugam@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.