53f4d259fa
Upstream commit: fffc2df8a3e2c8cda2991063d23086360268b777 - i386: Provide GLIBC_ABI_GNU_TLS symbol version [BZ #33221] - i386: Update ___tls_get_addr to preserve vector registers - Extend struct r_debug to support multiple namespaces (RHEL-101985) - Fix a potential crash in the dynamic loader when processing specific symbol versions (RHEL-109683) - Signal la_objopen for ld.so with dlmopen (RHEL-109693) - Switch to main malloc after final ld.so self-relocation (RHEL-109703) - Prevent ld.so from asserting and crashing during audited library loads (RHEL-109702) - x86-64: Provide GLIBC_ABI_DT_X86_64_PLT symbol version (RHEL-109621) - x86-64, i386: Provide GLIBC_ABI_GNU2_TLS symbol version (RHEL-109625) - Ensure fallback initialization of ctype TLS data pointers to fix segfaults in programs using dlmopen or auditors (RHEL-72018) - Handle load segment gaps in _dl_find_object (RHEL-104854) - AArch64: Improve codegen in SVE log1p - AArch64: Optimize inverse trig functions - AArch64: Avoid memset ifunc in cpu-features.c [BZ #33112] Resolves: RHEL-109536 Resolves: RHEL-72018 Resolves: RHEL-101985 Resolves: RHEL-104854 Resolves: RHEL-109621 Resolves: RHEL-109625 Resolves: RHEL-109683 Resolves: RHEL-109693 Resolves: RHEL-109702 Resolves: RHEL-109703
61 lines
2.1 KiB
Diff
61 lines
2.1 KiB
Diff
commit 83340b35ccb24dcda8b709c4683ab9eade454bd7
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Author: H.J. Lu <hjl.tools@gmail.com>
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Date: Mon Jul 28 12:16:11 2025 -0700
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i386: Add GLIBC_ABI_GNU_TLS version [BZ #33221]
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On i386, programs and shared libraries with __thread usage may fail
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silently at run-time against glibc without the TLS run-time fix for:
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https://sourceware.org/bugzilla/show_bug.cgi?id=32996
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Add GLIBC_ABI_GNU_TLS version to indicate that glibc has the working
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GNU TLS run-time. Linker can add the GLIBC_ABI_GNU_TLS version to
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binaries which depend on the working TLS run-time so that such programs
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and shared libraries will fail to load and run at run-time against
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libc.so without the GLIBC_ABI_GNU_TLS version, instead of fail silently
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at random.
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This fixes BZ #33221.
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Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
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Reviewed-by: Sam James <sam@gentoo.org>
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(cherry picked from commit ed1b7a5a489ab555a27fad9c101ebe2e1c1ba881)
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diff --git a/sysdeps/i386/Makefile b/sysdeps/i386/Makefile
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index ee6470d78e856315..c0c017b899ebccbe 100644
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--- a/sysdeps/i386/Makefile
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+++ b/sysdeps/i386/Makefile
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@@ -60,6 +60,15 @@ $(objpfx)tst-ld-sse-use.out: ../sysdeps/i386/tst-ld-sse-use.sh $(objpfx)ld.so
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@echo "Checking ld.so for SSE register use. This will take a few seconds..."
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$(BASH) $< $(objpfx) '$(NM)' '$(OBJDUMP)' '$(READELF)' > $@; \
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$(evaluate-test)
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+
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+tests-special += $(objpfx)check-gnu-tls.out
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+
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+$(objpfx)check-gnu-tls.out: $(common-objpfx)libc.so
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+ LC_ALL=C $(READELF) -V -W $< \
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+ | sed -ne '/.gnu.version_d/, /.gnu.version_r/ p' \
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+ | grep GLIBC_ABI_GNU_TLS > $@; \
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+ $(evaluate-test)
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+generated += check-gnu-tls.out
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else
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CFLAGS-.os += $(if $(filter rtld-%.os,$(@F)), $(rtld-CFLAGS))
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endif
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diff --git a/sysdeps/i386/Versions b/sysdeps/i386/Versions
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index 36e23b466a622f43..9c84c8ef049eb18d 100644
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--- a/sysdeps/i386/Versions
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+++ b/sysdeps/i386/Versions
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@@ -28,6 +28,11 @@ libc {
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GLIBC_2.13 {
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__fentry__;
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}
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+ GLIBC_ABI_GNU_TLS {
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+ # This symbol is used only for empty version map and will be removed
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+ # by scripts/versions.awk.
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+ __placeholder_only_for_empty_version_map;
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+ }
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}
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libm {
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GLIBC_2.1 {
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