module: fix symbol versioning with symbol prefixes

Fix symbol versioning on architectures with symbol prefixes. Although the build was free from warnings the actual modules still wouldn't load as the ____versions table contained unprefixed symbol names, which were being compared against the prefixed symbol names when checking the symbol versions. This is fixed by modifying modpost to add the symbol prefix to the ____versions table it outputs (Modules.symvers still contains unprefixed symbol names). The check_modstruct_version() function is also fixed as it checks the version of the unprefixed "module_layout" symbol which would no longer work.

James Hogan committed 13 years ago

Commit a4b6a771 parent b92021b2 files · +4 −2Browse files

Showing the changes to kernel/module.c (1 of 2 files). Show all

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kernel/module.c+2−1

@@ -1212,7 +1212,8 @@ static inline int check_modstruct_version(Elf_Shdr *sechdrs, · 1211 unmodified lines
1212	1212	if (!find_symbol(VMLINUX_SYMBOL_STR(module_layout), NULL,
1213	1213	&crc, true, false))
1214	1214	BUG();
1215		− return check_version(sechdrs, versindex, "module_layout", mod, crc,
	1215	+ return check_version(sechdrs, versindex,
	1216	+ VMLINUX_SYMBOL_STR(module_layout), mod, crc,
1216	1217	NULL);
1217	1218	}
1218	1219