genksyms: Fix segfault with invalid declarations

Do not try to recover too early and segfault when parsing invalid declarations such as echo 'int (int);' | scripts/genksyms/genksyms echo 'int a, (int);' | scripts/genksyms/genksyms echo 'extern void *__inline_memcpy((void *), (const void *), (__kernel_size_t));' | scripts/genksyms/genksyms The last one was a real-life bug with include/asm-generic/asm-prototypes.h on x86_64. Reported-and-tested-by: Borislav Petkov <[email protected]> Signed-off-by: Michal Marek <[email protected]>
CarlFK · Jan 5, 2017 · d920f7c · d920f7c
1 parent 7ce7d89
commit d920f7c
Showing 1 changed file with 0 additions and 2 deletions.
diff --git a/scripts/genksyms/parse.y b/scripts/genksyms/parse.y
@@ -322,8 +322,6 @@ direct_declarator:
 		{ $$ = $2; }
 	| '(' declarator ')'
 		{ $$ = $3; }
-	| '(' error ')'
-		{ $$ = $3; }
 	;
 
 /* Nested declarators differ from regular declarators in that they do