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kbuild: scripts/basic/fixdep segfault on pathological string-o-death 

build scripts: fixdep blows segfault on string CONFIG_MODULE seen

The string "CONFIG_MODULE" appearing anywhere in a source file causes
fixdep to segfault.  This string appeared in the wild in the current
mISDN sources (I think they meant CONFIG_MODULES).  But it shouldn't
segfault (esp as CONFIG_MODULE appeared in a quoted string).

Signed-off-by: Andy Green <andy@warmcat.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
This commit is contained in:
Andy Green 2007-05-02 12:49:06 +01:00 committed by Sam Ravnborg
parent 1e093ecd4a
commit 04c58f8196
1 changed files with 2 additions and 0 deletions
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2
scripts/basic/fixdep.c
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@ -249,6 +249,8 @@ void parse_config_file(char *map, size_t len)
found: found:
if (!memcmp(q - 7, "_MODULE", 7)) if (!memcmp(q - 7, "_MODULE", 7))
q -= 7; q -= 7;
if( (q-p-7) < 0 )
continue;
use_config(p+7, q-p-7); use_config(p+7, q-p-7);
} }
} }