source: libisal version: 2.31.1-1 severity: important Control: forwarded -1 https://github.com/intel/isa-l/issues/311 Control: tags -1 + patch fixed-upstream
A bug affecting big endian architectures (e.g. s390x) was recently fixed upstream. The issue is in upstream's issue tracker on github: https://github.com/intel/isa-l/issues/311 The git commit fixing the issue is attached in the form of a patch generated using git format-patch. Mattias
From 633add1b569fe927bace3960d7c84ed9c1b38bb9 Mon Sep 17 00:00:00 2001
From: Pablo de Lara <pablo.de.lara.gua...@intel.com>
Date: Fri, 24 Jan 2025 12:51:48 +0000
Subject: [PATCH] igzip: fix header construction in Big Endian systems
When a file contains a number of repeated '0x00' or '0xff'
bytes, the block header is copied from a precomputed header,
which only worked for Little-Endian systems.
Fixes #311.
Signed-off-by: Pablo de Lara <pablo.de.lara.gua...@intel.com>
---
igzip/repeated_char_result.h | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/igzip/repeated_char_result.h b/igzip/repeated_char_result.h
index c06d01d..c90d529 100644
--- a/igzip/repeated_char_result.h
+++ b/igzip/repeated_char_result.h
@@ -59,8 +59,13 @@
/* Headers for constant 0x00 and 0xFF blocks
* This also contains the first literal character. */
const uint32_t repeated_char_header[2][5] = {
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
{ 0x0121c0ec, 0xc30c0000, 0x7d57fab0, 0x49270938 }, /* Deflate header for 0x00 */
{ 0x0121c0ec, 0xc30c0000, 0x7baaff30, 0x49270938 } /* Deflate header for 0xFF */
+#else
+ { 0xecc02101, 0x00000cc3, 0xb0fa577d, 0x38092749 }, /* Deflate header for 0x00 */
+ { 0xecc02101, 0x00000cc3, 0x30ffaa7b, 0x38092749 }, /* Deflate header for 0xFF */
+#endif
};
--
2.48.1
signature.asc
Description: This is a digitally signed message part
