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Apply patch from upstream BZ #32470

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Koichiro Iwao 2025-03-10 14:07:18 +00:00 committed by root
parent 72b1f60f08
commit 937ab6b08a
2 changed files with 43 additions and 1 deletions
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36
SOURCES/glibc-upstream-2.34-bz-32470.patch Normal file
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@ -0,0 +1,36 @@
From 1b1f940938b6971a8c4eba33abf9cdcec83298a5 Mon Sep 17 00:00:00 2001
From: Florian Weimer <fweimer@redhat.com>
Date: Tue, 17 Dec 2024 18:12:03 +0100
Subject: [PATCH] x86: Avoid integer truncation with large cache sizes (bug
32470)
Some hypervisors report 1 TiB L3 cache size. This results
in some variables incorrectly getting zeroed, causing crashes
in memcpy/memmove because invariants are violated.
(cherry picked from commit 61c3450db96dce96ad2b24b4f0b548e6a46d68e5)
---
sysdeps/x86/dl-cacheinfo.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/sysdeps/x86/dl-cacheinfo.h b/sysdeps/x86/dl-cacheinfo.h
index 84b10b8540..7865e87054 100644
--- a/sysdeps/x86/dl-cacheinfo.h
+++ b/sysdeps/x86/dl-cacheinfo.h
@@ -901,12 +901,12 @@ dl_init_cacheinfo (struct cpu_features *cpu_features)
#if HAVE_TUNABLES
/* NB: The REP MOVSB threshold must be greater than VEC_SIZE * 8. */
- unsigned int minimum_rep_movsb_threshold;
+ unsigned long int minimum_rep_movsb_threshold;
#endif
/* NB: The default REP MOVSB threshold is 4096 * (VEC_SIZE / 16) for
VEC_SIZE == 64 or 32. For VEC_SIZE == 16, the default REP MOVSB
threshold is 2048 * (VEC_SIZE / 16). */
- unsigned int rep_movsb_threshold;
+ unsigned long int rep_movsb_threshold;
if (CPU_FEATURE_USABLE_P (cpu_features, AVX512F)
&& !CPU_FEATURE_PREFERRED_P (cpu_features, Prefer_No_AVX512))
{
--
2.46.2

8
SPECS/glibc.spec
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@ -157,7 +157,7 @@ end \
Summary: The GNU libc libraries
Name: glibc
Version: %{glibcversion}
Release: 168%{?dist}
Release: 168%{?dist}.alma.1
# In general, GPLv2+ is used by programs, LGPLv2+ is used for
# libraries.
@ -1115,6 +1115,9 @@ Patch807: glibc-RHEL-24740-2.patch
Patch808: glibc-RHEL-24740-3.patch
Patch809: glibc-RHEL-71547.patch
# AlmaLinux Patch
Patch1000: glibc-upstream-2.34-bz-32470.patch
##############################################################################
# Continued list of core "glibc" package information:
##############################################################################
@ -3107,6 +3110,9 @@ update_gconv_modules_cache ()
%endif
%changelog
* Mon Mar 10 2025 Koichiro Iwao <meta@almalinux.org> - 2.34-168.alma.1
- Apply patch from upstream BZ #32470
* Thu Feb 13 2025 Florian Weimer <fweimer@redhat.com> - 2.34-168
- Fix transliteration regression in iconv tool (RHEL-71547)