H.J. Lu
9e38f455a6
x86: Add --enable-cet=permissive
...
When CET is enabled, it is an error to dlopen a non CET enabled shared
library in CET enabled application. It may be desirable to make CET
permissive, that is disable CET when dlopening a non CET enabled shared
library. With the new --enable-cet=permissive configure option, CET is
disabled when dlopening a non CET enabled shared library.
Add DEFAULT_DL_X86_CET_CONTROL to config.h.in:
/* The default value of x86 CET control. */
#define DEFAULT_DL_X86_CET_CONTROL cet_elf_property
which enables CET features based on ELF property note.
--enable-cet=permissive it to
/* The default value of x86 CET control. */
#define DEFAULT_DL_X86_CET_CONTROL cet_permissive
which enables CET features permissively.
Update tst-cet-legacy-5a, tst-cet-legacy-5b, tst-cet-legacy-6a and
tst-cet-legacy-6b to check --enable-cet and --enable-cet=permissive.
2020-05-18 08:38:53 -07:00
H.J. Lu
1fabdb9908
x86: Remove ARCH_CET_LEGACY_BITMAP [BZ #25397 ]
...
Since legacy bitmap doesn't cover jitted code generated by legacy JIT
engine, it isn't very useful. This patch removes ARCH_CET_LEGACY_BITMAP
and treats indirect branch tracking similar to shadow stack by removing
legacy bitmap support.
Tested on CET Linux/x86-64 and non-CET Linux/x86-64.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
2020-03-18 04:35:54 -07:00
H.J. Lu
635d6fae03
x86: Don't make 2 calls to dlerror () in a row
...
We shouldn't make 2 calls to dlerror () in a row since the first call
will clear the error. We should just use the return value from the
first call.
Tested on Linux/x86-64.
Reviewed-by: Florian Weimer <fweimer@redhat.com>
2020-02-01 05:43:34 -08:00
Joseph Myers
d614a75396
Update copyright dates with scripts/update-copyrights.
2020-01-01 00:14:33 +00:00
Paul Eggert
5a82c74822
Prefer https to http for gnu.org and fsf.org URLs
...
Also, change sources.redhat.com to sourceware.org.
This patch was automatically generated by running the following shell
script, which uses GNU sed, and which avoids modifying files imported
from upstream:
sed -ri '
s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g
s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g
' \
$(find $(git ls-files) -prune -type f \
! -name '*.po' \
! -name 'ChangeLog*' \
! -path COPYING ! -path COPYING.LIB \
! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \
! -path manual/texinfo.tex ! -path scripts/config.guess \
! -path scripts/config.sub ! -path scripts/install-sh \
! -path scripts/mkinstalldirs ! -path scripts/move-if-change \
! -path INSTALL ! -path locale/programs/charmap-kw.h \
! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \
! '(' -name configure \
-execdir test -f configure.ac -o -f configure.in ';' ')' \
! '(' -name preconfigure \
-execdir test -f preconfigure.ac ';' ')' \
-print)
and then by running 'make dist-prepare' to regenerate files built
from the altered files, and then executing the following to cleanup:
chmod a+x sysdeps/unix/sysv/linux/riscv/configure
# Omit irrelevant whitespace and comment-only changes,
# perhaps from a slightly-different Autoconf version.
git checkout -f \
sysdeps/csky/configure \
sysdeps/hppa/configure \
sysdeps/riscv/configure \
sysdeps/unix/sysv/linux/csky/configure
# Omit changes that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines
git checkout -f \
sysdeps/powerpc/powerpc64/ppc-mcount.S \
sysdeps/unix/sysv/linux/s390/s390-64/syscall.S
# Omit change that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline
git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
2019-09-07 02:43:31 -07:00
H.J. Lu
d0093c5cef
Call _dl_open_check after relocation [BZ #24259 ]
...
This is a workaround for [BZ #20839 ] which doesn't remove the NODELETE
object when _dl_open_check throws an exception. Move it after relocation
in dl_open_worker to avoid leaving the NODELETE object mapped without
relocation.
[BZ #24259 ]
* elf/dl-open.c (dl_open_worker): Call _dl_open_check after
relocation.
* sysdeps/x86/Makefile (tests): Add tst-cet-legacy-5a,
tst-cet-legacy-5b, tst-cet-legacy-6a and tst-cet-legacy-6b.
(modules-names): Add tst-cet-legacy-mod-5a, tst-cet-legacy-mod-5b,
tst-cet-legacy-mod-5c, tst-cet-legacy-mod-6a, tst-cet-legacy-mod-6b
and tst-cet-legacy-mod-6c.
(CFLAGS-tst-cet-legacy-5a.c): New.
(CFLAGS-tst-cet-legacy-5b.c): Likewise.
(CFLAGS-tst-cet-legacy-mod-5a.c): Likewise.
(CFLAGS-tst-cet-legacy-mod-5b.c): Likewise.
(CFLAGS-tst-cet-legacy-mod-5c.c): Likewise.
(CFLAGS-tst-cet-legacy-6a.c): Likewise.
(CFLAGS-tst-cet-legacy-6b.c): Likewise.
(CFLAGS-tst-cet-legacy-mod-6a.c): Likewise.
(CFLAGS-tst-cet-legacy-mod-6b.c): Likewise.
(CFLAGS-tst-cet-legacy-mod-6c.c): Likewise.
($(objpfx)tst-cet-legacy-5a): Likewise.
($(objpfx)tst-cet-legacy-5a.out): Likewise.
($(objpfx)tst-cet-legacy-mod-5a.so): Likewise.
($(objpfx)tst-cet-legacy-mod-5b.so): Likewise.
($(objpfx)tst-cet-legacy-5b): Likewise.
($(objpfx)tst-cet-legacy-5b.out): Likewise.
(tst-cet-legacy-5b-ENV): Likewise.
($(objpfx)tst-cet-legacy-6a): Likewise.
($(objpfx)tst-cet-legacy-6a.out): Likewise.
($(objpfx)tst-cet-legacy-mod-6a.so): Likewise.
($(objpfx)tst-cet-legacy-mod-6b.so): Likewise.
($(objpfx)tst-cet-legacy-6b): Likewise.
($(objpfx)tst-cet-legacy-6b.out): Likewise.
(tst-cet-legacy-6b-ENV): Likewise.
* sysdeps/x86/tst-cet-legacy-5.c: New file.
* sysdeps/x86/tst-cet-legacy-5a.c: Likewise.
* sysdeps/x86/tst-cet-legacy-5b.c: Likewise.
* sysdeps/x86/tst-cet-legacy-6.c: Likewise.
* sysdeps/x86/tst-cet-legacy-6a.c: Likewise.
* sysdeps/x86/tst-cet-legacy-6b.c: Likewise.
* sysdeps/x86/tst-cet-legacy-mod-5.c: Likewise.
* sysdeps/x86/tst-cet-legacy-mod-5a.c: Likewise.
* sysdeps/x86/tst-cet-legacy-mod-5b.c: Likewise.
* sysdeps/x86/tst-cet-legacy-mod-5c.c: Likewise.
* sysdeps/x86/tst-cet-legacy-mod-6.c: Likewise.
* sysdeps/x86/tst-cet-legacy-mod-6a.c: Likewise.
* sysdeps/x86/tst-cet-legacy-mod-6b.c: Likewise.
* sysdeps/x86/tst-cet-legacy-mod-6c.c: Likewise.
2019-07-01 12:23:22 -07:00
