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Ben Woodard b118bce87a elf: Fix runtime linker auditing on aarch64 (BZ #26643) 
The rtld audit support show two problems on aarch64:

  1. _dl_runtime_resolve does not preserve x8, the indirect result
      location register, which might generate wrong result calls
      depending of the function signature.

  2. The NEON Q registers pushed onto the stack by _dl_runtime_resolve
     were twice the size of D registers extracted from the stack frame by
     _dl_runtime_profile.

While 2. might result in wrong information passed on the PLT tracing,
1. generates wrong runtime behaviour.

The aarch64 rtld audit support is changed to:

  * Both La_aarch64_regs and La_aarch64_retval are expanded to include
    both x8 and the full sized NEON V registers, as defined by the
    ABI.

  * dl_runtime_profile needed to extract registers saved by
    _dl_runtime_resolve and put them into the new correctly sized
    La_aarch64_regs structure.

  * The LAV_CURRENT check is change to only accept new audit modules
    to avoid the undefined behavior of not save/restore x8.

  * Different than other architectures, audit modules older than
    LAV_CURRENT are rejected (both La_aarch64_regs and La_aarch64_retval
    changed their layout and there are no requirements to support multiple
    audit interface with the inherent aarch64 issues).

  * A new field is also reserved on both La_aarch64_regs and
    La_aarch64_retval to support variant pcs symbols.

Similar to x86, a new La_aarch64_vector type to represent the NEON
register is added on the La_aarch64_regs (so each type can be accessed
directly).

Since LAV_CURRENT was already bumped to support bind-now, there is
no need to increase it again.

Checked on aarch64-linux-gnu.

Co-authored-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
Reviewed-by: Szabolcs Nagy <szabolcs.nagy@arm.com>
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Tested-by: Carlos O'Donell <carlos@redhat.com>
(cherry picked from commit ce9a68c57c)

Resolved conflicts:
	NEWS
	elf/rtld.c
2022-04-12 13:33:10 -04:00
..
net Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
netinet Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
nfs Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
sys Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
_G_config.h
_itoa.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
a.out.h
abort-instr.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
adaptive_spin_count.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
aio_misc.h Linux: Cleanups after librt move 2021-06-28 09:51:01 +02:00
allocalim.h
arch-fd_to_filename.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
asm-syntax.h
atomic-machine.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
c++-types.data
confstr.h
crti.S
crtn.S
device-nrs.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
dirstream.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
dl-audit-check.h elf: Fix runtime linker auditing on aarch64 (BZ #26643) 2022-04-12 13:33:10 -04:00
dl-auxv.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
dl-cache.h ldconfig/x86: Store ISA level in cache and aux cache 2021-01-13 05:51:17 -08:00
dl-dtprocnum.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
dl-dtv.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
dl-fcntl.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
dl-fileid.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
dl-fixup-attribute.h elf: Add _dl_audit_pltexit 2022-04-08 14:18:12 -04:00
dl-fptr.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
dl-hash.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
dl-hwcap-check.h elf: Add hook for checking HWCAP bits after auxiliary vector parsing 2021-05-19 11:09:57 +02:00
dl-irel.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
dl-isa-level.h ldconfig/x86: Store ISA level in cache and aux cache 2021-01-13 05:51:17 -08:00
dl-librecon.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
dl-lookupcfg.h elf: Issue la_symbind for bind-now (BZ #23734) 2022-04-12 13:32:59 -04:00
dl-machine-rel.h elf: Add _dl_audit_pltexit 2022-04-08 14:18:12 -04:00
dl-machine.h elf: Fix dynamic-link.h usage on rtld.c 2022-04-08 14:18:11 -04:00
dl-mman.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
dl-osinfo.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
dl-procinfo.c
dl-procinfo.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
dl-procruntime.c
dl-prop.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
dl-relocate-ld.h ld.so: Initialize bootstrap_map.l_ld_readonly [BZ #28340] 2021-11-03 07:53:12 +01:00
dl-sysdep.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
dl-tls.h
dl-unistd.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
dl-vdso-setup.c
dl-vdso-setup.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
dl-vdso.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
dwarf2.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
elf_machine_sym_no_match.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
elf-initfini.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
elf-read-prop.h ldconfig/x86: Store ISA level in cache and aux cache 2021-01-13 05:51:17 -08:00
elide.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
eloop-threshold.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
entry.h
errqueue.h
fd_to_filename.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
features-time64.h y2038: Add support for 64-bit time on legacy ABIs 2021-06-15 10:42:11 -03:00
fenv_private.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
fips-private.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
fix-fp-int-compare-invalid.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
fix-fp-int-convert-overflow.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
fix-int-fp-convert-zero.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
float128-abi.h
fork.h posix: Consolidate fork implementation 2021-06-24 10:02:06 -03:00
fpu_control.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
framestate.c __frame_state_for: Use <unwind-link.h> for unwinder access 2021-03-01 15:59:36 +01:00
gcc-compat.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
gccframe.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
get-rounding-mode.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
gmp-mparam.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
hp-timing-common.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
hp-timing.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
ifreq.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
ifunc-init.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
ifunc-sel.h
internal-signals.h nptl: Remove __libc_allocate_rtsig, __libc_current_sigrtmax, and __libc_current_sigrtmin 2021-03-26 13:37:18 -03:00
intr-msg.h
ld.abilist
ldbl-classify-compat.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
ldconfig.h ldconfig/x86: Store ISA level in cache and aux cache 2021-01-13 05:51:17 -08:00
ldsodefs.h elf: Issue la_symbind for bind-now (BZ #23734) 2022-04-12 13:32:59 -04:00
libanl.abilist
libBrokenLocale.abilist
libc_malloc_debug.abilist Move malloc hooks into a compat DSO 2021-07-22 18:37:59 +05:30
libc_start_call_main.h csu: Move calling main out of __libc_start_main_impl 2021-04-21 19:49:50 +02:00
libc-lock.h Remove pthread_key_create-related internals from libc-lock.h 2021-04-21 19:49:51 +02:00
libc-mmap.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
libc-mtag.h malloc: Only support zeroing and not arbitrary memset with mtag 2021-03-26 11:03:06 +00:00
libc-start.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
libc-symver.h Support for multiple versions in versioned_symbol, compat_symbol 2021-03-25 12:33:02 +01:00
libc-tsd.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
libc.abilist Make sysdeps/generic/libc.abilist empty 2021-05-13 21:28:17 +00:00
libcrypt.abilist
libdl.abilist
libm-alias-double.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
libm-alias-float128.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
libm-alias-float.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
libm-alias-ldouble.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
libm-test-ulps
libm-test-ulps-name
libm.abilist
libnsl.abilist
libnss_compat.abilist
libnss_db.abilist
libnss_dns.abilist
libnss_files.abilist
libnss_hesiod.abilist
libnss_nis.abilist
libnss_nisplus.abilist
libpthread.abilist
libresolv.abilist
librt.abilist
libutil.abilist
link_map.h
linkmap.h
local-setxid.h
localplt.data mtrace: Wean away from malloc hooks 2021-07-22 18:38:06 +05:30
machine-gmon.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
machine-lock.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
machine-sp.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
Makefile Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
malloc-alignment.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
malloc-machine.h Add a generic malloc test for MALLOC_ALIGNMENT 2021-07-09 06:39:30 -07:00
malloc-size.h Add a generic malloc test for MALLOC_ALIGNMENT 2021-07-09 06:39:30 -07:00
malloc-sysdep.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
math_ldbl_opt.h
math_ldbl.h
math_private_calls.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
math_private.h math: Remove mpa files [BZ #15267] 2021-03-11 14:26:36 +00:00
math-barriers.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
math-nan-payload-double.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
math-nan-payload-float.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
math-narrow-alias-float128.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
math-tests-arch.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
math-tests-exceptions.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
math-tests-rounding.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
math-tests-snan-cast.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
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math-type-macros-double.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
math-type-macros-float128.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
math-type-macros-float.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
math-type-macros-ldouble.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
math-type-macros.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
math-use-builtins-ceil.h
math-use-builtins-copysign.h
math-use-builtins-floor.h
math-use-builtins-fma.h
math-use-builtins-nearbyint.h
math-use-builtins-rint.h
math-use-builtins-round.h
math-use-builtins-roundeven.h Use GCC builtins for roundeven functions if desired. 2021-06-27 07:56:57 -07:00
math-use-builtins-sqrt.h
math-use-builtins-trunc.h
math-use-builtins.h Use GCC builtins for roundeven functions if desired. 2021-06-27 07:56:57 -07:00
memcopy.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
memusage.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
mmap_info.h
nan-high-order-bit.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
not-cancel.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
not-errno.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
nscd-types.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
pagecopy.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
paths.h
profil-counter.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
pty-private.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
register-dump.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
rtld_static_init.h elf: Partially initialize ld.so after static dlopen (bug 20802) 2021-05-17 10:06:57 +02:00
rtld-lowlevel.h
safe-fatal.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
setjmpP.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
sigcontextinfo.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
siglist-compat.c
siglist-compat.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
siglist.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
sigset-cvt-mask.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
sigsetops.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
single-thread.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
spawn_int_def.h posix: Add posix_spawn_file_actions_addclosefrom_np 2021-07-08 14:08:15 -03:00
stackguard-macros.h
stackinfo.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
stap-probe-machine.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
startup.h Use <startup.h> in __libc_init_secure 2021-01-19 09:55:47 -08:00
stdio-lock.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
string_private.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
struct_stat_time64.h
symbol-hacks.h
sysdep-cancel.h
sysdep.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
thread_state.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
time64-compat.h y2038: Add support for 64-bit time on legacy ABIs 2021-06-15 10:42:11 -03:00
time-clockid.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tininess.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tls-internal-struct.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tls-internal.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tls-internal.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tls-macros.h
tls-setup.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tls.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
tst-audit.h
tst-stack-align.h Properly check stack alignment [BZ #27901] 2021-05-24 07:42:12 -07:00
unsecvars.h
unwind-arch.h Implement <unwind-link.h> for dynamically loading the libgcc_s unwinder 2021-03-01 15:58:01 +01:00
unwind-dw2-fde-glibc.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
unwind-dw2-fde.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
unwind-dw2-fde.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
unwind-dw2.c Legacy unwinder: Remove definition of _Unwind_GetCFA 2021-03-16 15:33:09 +01:00
unwind-link.h Implement <unwind-link.h> for dynamically loading the libgcc_s unwinder 2021-03-01 15:58:01 +01:00
unwind-pe.c
unwind-pe.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
unwind-resume.c nptl: Move __pthread_unwind_next into libc 2021-04-21 19:49:50 +02:00
unwind-resume.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
unwind.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
utmp-equal.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
xstatver.h