Your message dated Mon, 25 Mar 2019 20:44:42 +0000
with message-id <e1h8wsy-000elx...@fasolo.debian.org>
and subject line Bug#925360: fixed in pcre2 10.32-5
has caused the Debian Bug report #925360,
regarding pcre2: Uses SSE2 unconditionally on i386
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact ow...@bugs.debian.org
immediately.)
--
925360: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=925360
Debian Bug Tracking System
Contact ow...@bugs.debian.org with problems
--- Begin Message ---
Source: pcre2
Source-Version: 10.32-4
Severity: serious
Tags: upstream patch
Hi!
I just upgraded a server of mine to Debian buster, and roundcube's
postinst started to crash with "Illegal instruction" messages from a
php process, due to usage of a SSE2 instruction (PSLLDQ). This
instruction is not required by our ISA baseline, and SSE2 is not
present on many i386 based CPUs, such as AMD Semprons for example.
Tracking this down was a bit of a pain, as the offending instructions
were JITed at run-time, so there were no symbols associated, or
indication from where this was coming from. Checking php source
themselves revelead at least what seemed like some unconditional usage
of AVX, SSE2, SSS3 and SSE4.x instructions, and I've got a patch for
that, but this didn't fix the problem. Because php links against the
system pcre2 instead of using its internal embedded copy. :)
So attached is the matching patch for pcre2, that does fix this issue
for me.
Thanks,
Guillem
diff -u pcre2-10.32/debian/changelog pcre2-10.32/debian/changelog
--- pcre2-10.32/debian/changelog
+++ pcre2-10.32/debian/changelog
@@ -1,3 +1,12 @@
+pcre2 (10.32-4.1) UNRELEASED; urgency=medium
+
+ * Non-maintainer upload.
+ * Do not unconditionally use SSE2 instructions on i386, as some processors
+ that conform to the architecture ISA baseline, do not support that
+ instruction set.
+
+ -- Guillem Jover <guil...@debian.org> Sat, 23 Mar 2019 19:24:32 +0100
+
pcre2 (10.32-4) unstable; urgency=medium
* Take patch from Jeremy Bicha to build with
only in patch2:
unchanged:
--- pcre2-10.32.orig/src/pcre2_jit_compile.c
+++ pcre2-10.32/src/pcre2_jit_compile.c
@@ -5120,8 +5120,9 @@
}
#if (defined SLJIT_CONFIG_X86 && SLJIT_CONFIG_X86) && !(defined SUPPORT_VALGRIND) && !(defined _WIN64)
-if (check_fast_forward_char_pair_sse2(common, chars, max))
- return TRUE;
+if (sljit_has_cpu_feature(SLJIT_HAS_SSE2))
+ if (check_fast_forward_char_pair_sse2(common, chars, max))
+ return TRUE;
#endif
in_range = FALSE;
--- End Message ---
--- Begin Message ---
Source: pcre2
Source-Version: 10.32-5
We believe that the bug you reported is fixed in the latest version of
pcre2, which is due to be installed in the Debian FTP archive.
A summary of the changes between this version and the previous one is
attached.
Thank you for reporting the bug, which will now be closed. If you
have further comments please address them to 925...@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Matthew Vernon <matt...@debian.org> (supplier of updated pcre2 package)
(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmas...@ftp-master.debian.org)
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512
Format: 1.8
Date: Mon, 25 Mar 2019 19:56:19 +0000
Source: pcre2
Binary: libpcre2-8-0 libpcre2-8-0-udeb libpcre2-16-0 libpcre2-32-0
libpcre2-posix0 libpcre2-dev libpcre2-dbg pcre2-utils
Architecture: i386 source
Version: 10.32-5
Distribution: unstable
Urgency: high
Maintainer: Matthew Vernon <matt...@debian.org>
Changed-By: Matthew Vernon <matt...@debian.org>
Closes: 925360
Description:
libpcre2-16-0 - New Perl Compatible Regular Expression Library - 16 bit
runtime f
libpcre2-32-0 - New Perl Compatible Regular Expression Library - 32 bit
runtime f
libpcre2-8-0 - New Perl Compatible Regular Expression Library- 8 bit runtime
fil
libpcre2-8-0-udeb - New Perl Compatible Regular Expression Library- 8 bit
runtime fil (udeb)
libpcre2-dbg - New Perl Compatible Regular Expression Library - debug symbols
libpcre2-dev - New Perl Compatible Regular Expression Library - development
file
libpcre2-posix0 - New Perl Compatible Regular Expression Library -
posix-compatible
pcre2-utils - New Perl Compatible Regular Expression Library - utilities
Changes:
pcre2 (10.32-5) unstable; urgency=high
.
* Patch from Guillem Jover <guil...@debian.org> to only use SSE2
instructions on those i386 CPUs that support them (Closes: #925360)
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