From: Dmitry V. Levin <ldv@altlinux.org>
Date: Fri, 7 Dec 2012 21:38:52 +0000 (+0000)
Subject: Fix *xattr decoding
X-Git-Tag: v4.8~202
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=1f21513c38cbcb1d3d16e7b8ac0f17ef4793085e;p=strace

Fix *xattr decoding

* file.c (print_xattr_val): Do not attempt to decode a zero sized array.
Fixes RH#885233.
---

diff --git a/file.c b/file.c
index b952e7f7..1cd8d3c0 100644
--- a/file.c
+++ b/file.c
@@ -2466,6 +2466,8 @@ print_xattr_val(struct tcb *tcp, int failed,
 		unsigned long insize,
 		unsigned long size)
 {
+	if (insize == 0)
+		failed = 1;
 	if (!failed) {
 		unsigned long capacity = 4 * size + 1;
 		unsigned char *buf = (capacity < size) ? NULL : malloc(capacity);