[PATCH 2/3] genksyms: Fix segfault with invalid declarations

[Michal Marek]

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-by: Borislav Petkov 
Signed-off-by: Michal Marek 
---
 scripts/genksyms/parse.y | 2 --
 1 file changed, 2 deletions(-)

diff --git a/scripts/genksyms/parse.y b/scripts/genksyms/parse.y
index 4fba255e54ae..00a6d7e54971 100644
--- 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
-- 
2.10.2

[PATCH 2/3] genksyms: Fix segfault with invalid declarations

[Michal Marek]

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-by: Borislav Petkov 
Signed-off-by: Michal Marek 
---
 scripts/genksyms/parse.y | 2 --
 1 file changed, 2 deletions(-)

diff --git a/scripts/genksyms/parse.y b/scripts/genksyms/parse.y
index 4fba255e54ae..00a6d7e54971 100644
--- 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
-- 
2.10.2