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
65 lines
2.2 KiB
Diff
65 lines
2.2 KiB
Diff
commit 62ff85fd09ff648183af4265f07dace2879e6d42
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Author: H.J. Lu <hjl.tools@gmail.com>
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Date: Mon Jul 28 12:18:22 2025 -0700
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x86-64: Add GLIBC_ABI_GNU2_TLS version [BZ #33129]
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Programs and shared libraries compiled with -mtls-dialect=gnu2 may fail
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silently at run-time against glibc without the GNU2 TLS run-time fix
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for:
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https://sourceware.org/bugzilla/show_bug.cgi?id=31372
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Add GLIBC_ABI_GNU2_TLS version to indicate that glibc has the working
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GNU2 TLS run-time. Linker can add the GLIBC_ABI_GNU2_TLS version to
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binaries which depend on the working GNU2 TLS run-time:
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https://sourceware.org/bugzilla/show_bug.cgi?id=33130
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so that such programs and shared libraries will fail to load and run at
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run-time against libc.so without the GLIBC_ABI_GNU2_TLS version, instead
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of fail silently at random.
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This fixes BZ #33129.
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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 9df8fa397d515dc86ff5565f6c45625e672d539e)
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diff --git a/sysdeps/x86_64/Makefile b/sysdeps/x86_64/Makefile
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index 08ec882159990e97..af978601657c2129 100644
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--- a/sysdeps/x86_64/Makefile
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+++ b/sysdeps/x86_64/Makefile
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@@ -209,6 +209,15 @@ LDFLAGS-tst-plt-rewrite2 = -Wl,-z,now
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LDFLAGS-tst-plt-rewritemod2.so = -Wl,-z,now,-z,undefs
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tst-plt-rewrite2-ENV = GLIBC_TUNABLES=glibc.cpu.plt_rewrite=2
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$(objpfx)tst-plt-rewrite2: $(objpfx)tst-plt-rewritemod2.so
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+
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+tests-special += $(objpfx)check-gnu2-tls.out
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+
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+$(objpfx)check-gnu2-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_GNU2_TLS > $@; \
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+ $(evaluate-test)
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+generated += check-gnu2-tls.out
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endif
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test-internal-extras += tst-gnu2-tls2mod1
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diff --git a/sysdeps/x86_64/Versions b/sysdeps/x86_64/Versions
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index e94758b23643a905..a63c11bcb25adf48 100644
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--- a/sysdeps/x86_64/Versions
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+++ b/sysdeps/x86_64/Versions
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@@ -5,6 +5,11 @@ libc {
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GLIBC_2.13 {
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__fentry__;
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}
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+ GLIBC_ABI_GNU2_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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