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drm/amd/pm: Replace all non-returning strlcpy with strscpy

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strlcpy() reads the entire source buffer first.
This read may exceed the destination size limit.
This is both inefficient and can lead to linear read
overflows if a source string is not NUL-terminated [1].
In an effort to remove strlcpy() completely [2], replace
strlcpy() here with strscpy().
No return values were used, so direct replacement is safe.

[1] https://www.kernel.org/doc/html/latest/process/deprecated.html#strlcpy
[2] https://github.com/KSPP/linux/issues/89

Signed-off-by: Azeem Shaikh <azeemshaikh38@gmail.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20230522155245.2336818-1-azeemshaikh38@gmail.com
This commit is contained in:
Azeem Shaikh 2023-05-22 15:52:45 +00:00 committed by Kees Cook
parent 992b8fe106
commit 7f09a3a09f
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/amd/pm/legacy-dpm/legacy_dpm.c
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@ -794,7 +794,7 @@ void amdgpu_add_thermal_controller(struct amdgpu_device *adev)
struct i2c_board_info info = { };
const char *name = pp_lib_thermal_controller_names[controller->ucType];
info.addr = controller->ucI2cAddress >> 1;
strlcpy(info.type, name, sizeof(info.type));
strscpy(info.type, name, sizeof(info.type));
i2c_new_client_device(&adev->pm.i2c_bus->adapter, &info);
}
} else {