From: Jesper Juhl <jesper.juhl@gmail.com>
Date: Wed, 19 Apr 2006 05:21:54 +0000 (-0700)
Subject: [PATCH] Fix potential NULL pointer deref in gen_init_cpio
X-Git-Tag: firefly_0821_release~36063
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=aa1e816fc92215f94bdfd90107baae8fdc2440d1;p=firefly-linux-kernel-4.4.55.git

[PATCH] Fix potential NULL pointer deref in gen_init_cpio

Fix potential NULL pointer deref in gen_init_cpio.c spotted by coverity
checker.  This fixes coverity bug #86

Without this patch we risk dereferencing a NULL `type' in the
"if ('\n' == *type) {" line.

Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/usr/gen_init_cpio.c b/usr/gen_init_cpio.c
index 33dbcbf77c5b..83acd6cc0b3c 100644
--- a/usr/gen_init_cpio.c
+++ b/usr/gen_init_cpio.c
@@ -471,6 +471,7 @@ int main (int argc, char *argv[])
 				"ERROR: incorrect format, could not locate file type line %d: '%s'\n",
 				line_nr, line);
 			ec = -1;
+			break;
 		}
 
 		if ('\n' == *type) {
@@ -506,7 +507,8 @@ int main (int argc, char *argv[])
 				line_nr, line);
 		}
 	}
-	cpio_trailer();
+	if (ec == 0)
+		cpio_trailer();
 
 	exit(ec);
 }