glibc: Fix __memcpy_chk on non-SSE2 CPUs
PATCH 1/1 glibc: Fix __memcpy_chk on non-SSE2 CPUs
Backport from upstream glibc:
https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=132a1328eccd20621b77f7810eebbeec0a1af187
Note that the fix is only required when glibc is built for i686/multiarch, so is not applicable in the default oe-core x86 configuration (which builds glibc for i586 and therefore does not include SSE2 optimised memcpy etc).
Signed-off-by Andre McCurdy <[email protected]>
--- .../glibc/Fix-__memcpy_chk-on-non-SSE2-CPUs.patch | 36 ++++++++++++++++++++++ meta/recipes-core/glibc/glibc_2.21.bb | 1 + 2 files changed, 37 insertions(+) create mode 100644 meta/recipes-core/glibc/glibc/Fix-__memcpy_chk-on-non-SSE2-CPUs.patch
meta/recipes-core/glibc/glibc/Fix-__memcpy_chk-on-non-SSE2-CPUs.patch new file +36 -0
@@ -0,0 +1,36 @@ +From 132a1328eccd20621b77f7810eebbeec0a1af187 Mon Sep 17 00:00:00 2001 +From: Evangelos Foutras <[email protected]> +Date: Tue, 10 Feb 2015 03:22:58 +0000 +Subject: [PATCH] Fix __memcpy_chk on non-SSE2 CPUs + +In commit 8b4416d, the 1: jump label in __mempcpy_chk was accidentally +moved. This resulted in failures of mempcpy on CPU without SSE2. + +Upstream-Status: Backport + + https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=132a1328eccd20621b77f7810eebbeec0a1af187 + +Signed-off-by: Andre McCurdy <[email protected]> + +--- + sysdeps/i386/i686/multiarch/mempcpy_chk.S | 4 ++-- + 3 files changed, 9 insertions(+), 3 deletions(-) + +diff --git a/sysdeps/i386/i686/multiarch/mempcpy_chk.S b/sysdeps/i386/i686/multiarch/mempcpy_chk.S +index 207b648..b6fa202 100644 +--- a/sysdeps/i386/i686/multiarch/mempcpy_chk.S ++++ b/sysdeps/i386/i686/multiarch/mempcpy_chk.S +@@ -36,8 +36,8 @@ ENTRY(__mempcpy_chk) + cmpl $0, KIND_OFFSET+__cpu_features@GOTOFF(%ebx) + jne 1f + call __init_cpu_features +- leal __mempcpy_chk_ia32@GOTOFF(%ebx), %eax +-1: testl $bit_SSE2, CPUID_OFFSET+index_SSE2+__cpu_features@GOTOFF(%ebx) ++1: leal __mempcpy_chk_ia32@GOTOFF(%ebx), %eax ++ testl $bit_SSE2, CPUID_OFFSET+index_SSE2+__cpu_features@GOTOFF(%ebx) + jz 2f + leal __mempcpy_chk_sse2_unaligned@GOTOFF(%ebx), %eax + testl $bit_Fast_Unaligned_Load, FEATURE_OFFSET+index_Fast_Unaligned_Load+__cpu_features@GOTOFF(%ebx) +-- +1.9.1 +
meta/recipes-core/glibc/glibc_2.21.bb +1 -0
@@ -27,6 +27,7 @@ SRC_URI = "git://sourceware.org/git/glibc.git;branch=${BRANCH} \ file://0001-yes-within-the-path-sets-wrong-config-variables.patch \ file://elf-Makefile-fix-a-typo.patch \ file://makesyscall.patch \ + file://Fix-__memcpy_chk-on-non-SSE2-CPUs.patch \ ${EGLIBCPATCHES} \ ${CVEPATCHES} \ "
Signature · 1 line
1.9.1