amdgpu driver fails compilation when compiling with
CONFIG_FORTIFY_SOURCE kernel option:
In function ‘memmove’,
inlined from ‘append_entry’ at
drivers/gpu/drm/amd/amdgpu/../display/dc/basics/logger.c:258:2,
inlined from ‘dm_logger_append_va.part.5’ at
drivers/gpu/drm/amd/amdgpu/../display/dc/basics/logger.c:349:4:
./include/linux/string.h:356:4: error: call to ‘__read_overflow2’
declared with attribute error: detected read beyond size of object
passed as 2nd parameter
__read_overflow2();
^~~~~~~~~~~~~~~~~~
I have attached a patch which resolves this problem.
Regards,
Jan
diff -ur a/drivers/gpu/drm/amd/display/dc/basics/logger.c b/drivers/gpu/drm/amd/display/dc/basics/logger.c
--- a/drivers/gpu/drm/amd/display/dc/basics/logger.c 2018-09-05 12:37:10.829547720 +0200
+++ b/drivers/gpu/drm/amd/display/dc/basics/logger.c 2018-09-05 12:36:52.612682259 +0200
@@ -346,7 +346,7 @@
if (size < LOG_MAX_LINE_SIZE - 1) {
append_entry(entry, buffer, size);
} else {
- append_entry(entry, "LOG_ERROR, line too long\n", 27);
+ append_entry(entry, "LOG_ERROR, line too long\n", 25);
}
}
}
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