Commit 4596eee0 authored Jan 29, 2020 by Sami Tolvanen

ANDROID: kallsyms: strip hashes from function names with ThinLTO



With CONFIG_THINLTO and CFI both enabled, LLVM appends a hash to the
names of all static functions. This breaks userspace tools, so strip
out the hash from output.

Bug: 147422318
Change-Id: Ibea6be089d530e92dcd191481cb02549041203f6
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>

parent 99e4db37

kernel/kallsyms.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -280,6 +280,12 @@ static inline void cleanup_symbol_name(char *s)
		{
		char *res;

		#ifdef CONFIG_THINLTO
		/* Filter out hashes from static functions */
		res = strrchr(s, '$');
		if (res)
		*res = '\0';
		#endif
		res = strrchr(s, '.');
		if (res && !strcmp(res, ".cfi"))
		*res = '\0';