[PATCH 1/2] xen: always set an error return code on lz4 decompression failures

[Matthew Daley <mattjd@gmail.com>]

Signed-off-by: Matthew Daley <mattjd@gmail.com>
---
 xen/common/unlz4.c |    6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/xen/common/unlz4.c b/xen/common/unlz4.c
index 195d829..ae87f4c 100644
--- a/xen/common/unlz4.c
+++ b/xen/common/unlz4.c
@@ -112,6 +112,7 @@ STATIC int INIT unlz4(unsigned char *input, unsigned int in_len,
 		if (fill) {
 			if (chunksize > lz4_compressbound(uncomp_chunksize)) {
 				error("chunk length is longer than allocated");
+				ret = -1;
 				goto exit_2;
 			}
 			fill(inp, chunksize);
@@ -133,8 +134,10 @@ STATIC int INIT unlz4(unsigned char *input, unsigned int in_len,
 			goto exit_2;
 		}
 
-		if (flush && flush(outp, dest_len) != dest_len)
+		if (flush && flush(outp, dest_len) != dest_len) {
+			ret = -1;
 			goto exit_2;
+		}
 		if (output)
 			outp += dest_len;
 		if (posp)
@@ -146,6 +149,7 @@ STATIC int INIT unlz4(unsigned char *input, unsigned int in_len,
 			break;
 		else if (size < 0) {
 			error("data corrupted");
+			ret = -1;
 			goto exit_2;
 		}
 
-- 
1.7.10.4