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| author | H.J. Lu <hjl.tools@gmail.com> | 2024-01-01 07:55:18 -0800 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2024-01-01 15:53:52 -0800 |
| commit | b5dcccfb12385ee492eb074f6beb9ead56b5e5fd (patch) | |
| tree | 8938cf9d7869284e0095c9e57e8f1762ff780031 /sysdeps/x86/Makefile | |
| parent | 6ac0e019098252cd6378d4ca2e1e3c0174d4806d (diff) | |
| download | glibc-b5dcccfb12385ee492eb074f6beb9ead56b5e5fd.tar glibc-b5dcccfb12385ee492eb074f6beb9ead56b5e5fd.tar.gz glibc-b5dcccfb12385ee492eb074f6beb9ead56b5e5fd.tar.bz2 glibc-b5dcccfb12385ee492eb074f6beb9ead56b5e5fd.zip | |
x86/cet: Add -fcf-protection=none before -fcf-protection=branch
When shadow stack is enabled, some CET tests failed when compiled with
GCC 14:
FAIL: elf/tst-cet-legacy-4
FAIL: elf/tst-cet-legacy-5a
FAIL: elf/tst-cet-legacy-6a
which are caused by
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113039
These tests use -fcf-protection -fcf-protection=branch and assume that
-fcf-protection=branch will override -fcf-protection. But this GCC 14
commit:
https://gcc.gnu.org/git/gitweb.cgi?p=gcc.git;h=1c6231c05bdcca
changed the -fcf-protection behavior such that
-fcf-protection -fcf-protection=branch
is treated the same as
-fcf-protection
Use
-fcf-protection -fcf-protection=none -fcf-protection=branch
as the workaround. This fixes BZ #31187.
Tested with GCC 13 and GCC 14 on Intel Tiger Lake.
Reviewed-by: Noah Goldstein <goldstein.w.n@gmail.com>
Diffstat (limited to 'sysdeps/x86/Makefile')
| -rw-r--r-- | sysdeps/x86/Makefile | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/sysdeps/x86/Makefile b/sysdeps/x86/Makefile index a49b13c595..5c8ab64c4d 100644 --- a/sysdeps/x86/Makefile +++ b/sysdeps/x86/Makefile @@ -215,12 +215,12 @@ modules-names += \ tst-cet-legacy-mod-6c \ # modules-names -CFLAGS-tst-cet-legacy-2.c += -fcf-protection=branch +CFLAGS-tst-cet-legacy-2.c += -fcf-protection=none -fcf-protection=branch CFLAGS-tst-cet-legacy-2a.c += -fcf-protection CFLAGS-tst-cet-legacy-mod-1.c += -fcf-protection=none CFLAGS-tst-cet-legacy-mod-2.c += -fcf-protection=none CFLAGS-tst-cet-legacy-3.c += -fcf-protection=none -CFLAGS-tst-cet-legacy-4.c += -fcf-protection=branch +CFLAGS-tst-cet-legacy-4.c += -fcf-protection=none -fcf-protection=branch CPPFLAGS-tst-cet-legacy-4a.c += -DCET_IS_PERMISSIVE=1 CFLAGS-tst-cet-legacy-4a.c += -fcf-protection CFLAGS-tst-cet-legacy-4b.c += -fcf-protection @@ -231,7 +231,7 @@ CPPFLAGS-tst-cet-legacy-5a.c += -DCET_IS_PERMISSIVE=1 endif CFLAGS-tst-cet-legacy-5b.c += -fcf-protection -mshstk CPPFLAGS-tst-cet-legacy-5b.c += -DCET_DISABLED_BY_ENV=1 -CFLAGS-tst-cet-legacy-mod-5a.c += -fcf-protection=branch +CFLAGS-tst-cet-legacy-mod-5a.c += -fcf-protection=none -fcf-protection=branch CFLAGS-tst-cet-legacy-mod-5b.c += -fcf-protection CFLAGS-tst-cet-legacy-mod-5c.c += -fcf-protection CFLAGS-tst-cet-legacy-6a.c += -fcf-protection -mshstk @@ -240,7 +240,7 @@ CPPFLAGS-tst-cet-legacy-6a.c += -DCET_IS_PERMISSIVE=1 endif CFLAGS-tst-cet-legacy-6b.c += -fcf-protection -mshstk CPPFLAGS-tst-cet-legacy-6b.c += -DCET_DISABLED_BY_ENV=1 -CFLAGS-tst-cet-legacy-mod-6a.c += -fcf-protection=branch +CFLAGS-tst-cet-legacy-mod-6a.c += -fcf-protection=none -fcf-protection=branch CFLAGS-tst-cet-legacy-mod-6b.c += -fcf-protection CFLAGS-tst-cet-legacy-mod-6c.c += -fcf-protection CFLAGS-tst-cet-legacy-7.c += -fcf-protection=none |