Fwd: binutils-2.36.1 BTI PLT with only GNU PROP

[sajcho]

Subject: binutils-2.36.1 BTI PLT with only GNU PROP

Hi all.

When I run the binutils-2.36.1 test, I still get the same error.
Can you help me with the interpretation of this error and how to eliminate
it.
Here is the relevant part with the test log and gcc binutils configuration
used during compilation:

$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/aarch64-unknown-linux-gnu/10.2.0/lto-wrapper
Target: aarch64-unknown-linux-gnu
Configured with:
../gcc-10.2.0/configure \
--prefix=/usr \
--libexecdir=/usr/lib \
--enable-languages=c,c++,objc,fortran \
--enable-threads=posix \
--enable-__cxa_atexit \
--enable-clocale=gnu \
--enable-default-pie \
--enable-default-ssp \
--enable-fix-cortex-a53-835769 \
--enable-fix-cortex-a53-843419 \
--enable-gnu-unique-object \
--enable-linker-build-id \
--enable-shared \
--enable-plugin \
--disable-nls \
--disable-multilib \
--disable-libssp \
--disable-libquadmath \
--disable-libquadmath-support \
--disable-libstdcxx-pch \
--with-arch=armv8-a \
--with-abi=lp64 \
--with-system-zlib \
--with-linker-hash-style=gnu \
--with-pkgversion='SAUX Aarch64'

Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 10.2.0 (SAUX Aarch64)



Binutils version 2.36.1

configure \
--prefix=/usr \
--enable-ld=default \
--enable-gold=no \
--enable-plugins \
--enable-threads \
--enable-relro \
--enable-secureplt \ # ??? PowerPC
--enable-64-bit-bfd \
--enable-install-libiberty \
--enable-deterministic-archives \
--enable-default-hash-style=gnu \
--disable-nls \
--disable-shared \
--disable-werror \
--disable-multilib \
--disable-gdb \
--with-pic \
--with-mmap \
--with-system-zlib \
--with-pkgversion="SAUX Aarch64"

Building use:

CFLAGS="-O2 -march=armv8-a -mharden-sls=all -pipe"
CXXFLAGS="-O2 -march=armv8-a -mharden-sls=all -pipe"


Executing on host: sh -c {./ld-new -z norelro
-L/home/saux-devel/testing/binutils/work/src/binutils-2.36.1/ld/testsuite/ld-aarch64
-z force-bti -e _start -T bti-plt.ld -L./tmpdir -lbti-plt-so -o tmpdir/dump
tmpdir/bti-plt-1.o  2>&1}  /devspawn [open ...]
/home/saux-devel/testing/binutils/work/src/build/ld/../binutils/readelf  -n
tmpdir/dump > tmpdir/dump.out
Executing on host: sh -c
{/home/saux-devel/testing/binutils/work/src/build/ld/../binutils/readelf  -n
tmpdir/dump > tmpdir/dump.out 2>dump.tmp}  /dev/null  (timeout = 300)
spawn [open ...]
PASS: Check -z force-bti emits BTI feature (exec)


/home/saux-devel/testing/binutils/work/src/build/ld/../gas/as-new
 -mabi=lp64
-defsym __property_bti__=1  -o tmpdir/property-bti-pac1.o
/home/saux-devel/testing/binutils/work/src/binutils-2.36.1/ld/testsuite/ld-aarch64/property-bti-pac1.s
Executing on host: sh -c
{/home/saux-devel/testing/binutils/work/src/build/ld/../gas/as-new
 -mabi=lp64
-defsym __property_bti__=1  -o tmpdir/property-bti-pac1.o
/home/saux-devel/testing/binutils/work/src/binutils-2.36.1/ld/testsuite/ld-aarspawn
[open ...]
./ld-new -z norelro
-L/home/saux-devel/testing/binutils/work/src/binutils-2.36.1/ld/testsuite/ld-aarch64
-e _start -L./tmpdir -lbti-plt-so -o tmpdir/dump tmpdir/property-bti-pac1.o
Executing on host: sh -c {./ld-new -z norelro
-L/home/saux-devel/testing/binutils/work/src/binutils-2.36.1/ld/testsuite/ld-aarch64
-e _start -L./tmpdir -lbti-plt-so -o tmpdir/dump tmpdir/property-bti-pac1.o
2>&1}  /dev/null dump.tmp (timspawn [open ...]
/home/saux-devel/testing/binutils/work/src/build/ld/../binutils/objdump  -dr
-j .plt tmpdir/dump > tmpdir/dump.out
Executing on host: sh -c
{/home/saux-devel/testing/binutils/work/src/build/ld/../binutils/objdump
 -dr
-j .plt tmpdir/dump > tmpdir/dump.out 2>dump.tmp}  /dev/null  (timeout =
300)
spawn [open ...]
regexp_diff match failure
regexp "^.*:    f9421611        ldr     x17, \[x16, #1064\]$"
line   "  40029c:       f9420611        ldr     x17, [x16, #1032]"
regexp_diff match failure
regexp "^.*:    9110a210        add     x16, x16, #0x428$"
line   "  4002a0:       91102210        add     x16, x16, #0x408"
regexp_diff match failure
regexp "^.*:    f9421a11        ldr     x17, \[x16, #1072\]$"
line   "  4002b8:       f9420a11        ldr     x17, [x16, #1040]"
regexp_diff match failure
regexp "^.*:    9110c210        add     x16, x16, #0x430$"
line   "  4002bc:       91104210        add     x16, x16, #0x410"


FAIL: BTI PLT with only GNU PROP


/home/saux-devel/testing/binutils/work/src/build/ld/../gas/as-new
 -mabi=lp64
-defsym __property_pac__=1  -o tmpdir/property-bti-pac2.o
/home/saux-devel/testing/binutils/work/src/binutils-2.36.1/ld/testsuite/ld-aarch64/property-bti-pac2.s
Executing on host: sh -c
{/home/saux-devel/testing/binutils/work/src/build/ld/../gas/as-new
 -mabi=lp64
-defsym __property_pac__=1  -o tmpdir/property-bti-pac2.o
/home/saux-devel/testing/binutils/work/src/binutils-2.36.1/ld/testsuite/ld-aarspawn
[open ...]
/home/saux-devel/testing/binutils/work/src/build/ld/../gas/as-new
 -mabi=lp64
-defsym __property_pac__=1  -o tmpdir/property-bti-pac1.o
/home/saux-devel/testing/binutils/work/src/binutils-2.36.1/ld/testsuite/ld-aarch64/property-bti-pac1.s
Executing on host: sh -c
{/home/saux-devel/testing/binutils/work/src/build/ld/../gas/as-new
 -mabi=lp64
-defsym __property_pac__=1  -o tmpdir/property-bti-pac1.o
/home/saux-devel/testing/binutils/work/src/binutils-2.36.1/ld/testsuite/ld-aarspawn
[open ...]
./ld-new -z norelro
-L/home/saux-devel/testing/binutils/work/src/binutils-2.36.1/ld/testsuite/ld-aarch64
-shared -z force-bti -o tmpdir/dump tmpdir/property-bti-pac2.o
tmpdir/property-bti-pac1.o
Executing on host: sh -c {./ld-new -z norelro
-L/home/saux-devel/testing/binutils/work/src/binutils-2.36.1/ld/testsuite/ld-aarch64
-shared -z force-bti -o tmpdir/dump tmpdir/property-bti-pac2.o
tmpdir/property-bti-pac1.o  2>&1}  /dev/nullspawn [open ...]
./ld-new: tmpdir/property-bti-pac2.o: warning: BTI turned on by -z force-bti
when all inputs do not have BTI in NOTE section.
succeeded with: <./ld-new: tmpdir/property-bti-pac2.o: warning: BTI turned
on
by -z force-bti when all inputs do not have BTI in NOTE section.>, expected:
<.*property-bti-pac2.*: warning: BTI turned on by -z force-bti.*$>
/home/saux-devel/testing/binutils/work/src/build/ld/../binutils/readelf  -n
tmpdir/dump > tmpdir/dump.out
Executing on host: sh -c
{/home/saux-devel/testing/binutils/work/src/build/ld/../binutils/readelf  -n
tmpdir/dump > tmpdir/dump.out 2>dump.tmp}  /dev/null  (timeout = 300)
spawn [open ...]

Regards

Milan