[Xen-devel] [PATCH] libxc/unlz4: always set an error return code on failures

["Jan Beulich" <JBeulich@xxxxxxxx>]

"ret", being set to -1 early on, gets cleared by the first invocation
of lz4_decompress()/lz4_decompress_unknownoutputsize(), and hence
subsequent failures wouldn't be noticed by the caller without setting
it back to -1 right after those calls.

Linux commit: 2a1d689c9ba42a6066540fb221b6ecbd6298b728

Reported-by: Matthew Daley <mattjd@xxxxxxxxx>
Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

--- a/tools/libxc/xc_dom_decompress_lz4.c
+++ b/tools/libxc/xc_dom_decompress_lz4.c
@@ -98,6 +98,7 @@ int xc_try_lz4_decode(
                        goto exit_2;
                }
 
+               ret = -1;
                outp += dest_len;
                size -= chunksize;

Attachment: unlz4-errors-domU.patch
Description: Text document

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