[Bug ld/28844] ld (bfd) segfaults on building efivar-38 with -flto

[dilfridge at gentoo dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=28844

Andreas K. Huettel <dilfridge at gentoo dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |dilfridge at gentoo dot org

--- Comment #5 from Andreas K. Huettel <dilfridge at gentoo dot org> ---
Sam asked me to reproduce this; here's the resulting backtrace:

huettel@pinacolada ~ $ coredumpctl debug 1001324
           PID: 1001324 (ld)
           UID: 1000 (huettel)
           GID: 1000 (huettel)
        Signal: 11 (SEGV)
     Timestamp: Mon 2022-01-31 02:40:33 CET (2min 42s ago)
  Command Line:
/usr/lib/gcc/x86_64-pc-linux-gnu/11.2.0/../../../../x86_64-pc-linux-gnu/bin/ld
-plugin /usr/libexec/gcc/x86_64-pc-linux-gnu/11.2.0/liblto_plugin.so
-plugin-opt=/usr/libexec/gcc/x86_64-pc-linux-gnu/11.2.0/lto-wrapper
-plugin-opt=-fresolution=/tmp/portage/sys-libs/efivar-38/temp/ccGm7cTv.res
-plugin-opt=-pass-through=-lgcc -plugin-opt=-pass-through=-lgcc_s
-plugin-opt=-pass-through=-lc -plugin-opt=-pass-through=-lgcc
-plugin-opt=-pass-through=-lgcc_s --eh-frame-hdr -m elf_x86_64 -shared
--no-undefined-version --no-allow-shlib-undefined --add-needed -z now
--build-id -z relro --no-undefined-version --no-allow-shlib-undefined
--add-needed -z now --build-id -z relro --no-undefined-version
--no-allow-shlib-undefined --add-needed -z now --build-id -z relro -o
libefivar.so /usr/lib/gcc/x86_64-pc-linux-gnu/11.2.0/../../../../lib64/crti.o
/usr/lib/gcc/x86_64-pc-linux-gnu/11.2.0/crtbeginS.o -L. -L.
-L/usr/lib/gcc/x86_64-pc-linux-gnu/11.2.0
-L/usr/lib/gcc/x86_64-pc-linux-gnu/11.2.0/../../../../lib64 -L/lib/../lib64
-L/usr/lib/../lib64
-L/usr/lib/gcc/x86_64-pc-linux-gnu/11.2.0/../../../../x86_64-pc-linux-gnu/lib
-L/usr/lib/gcc/x86_64-pc-linux-gnu/11.2.0/../../.. -O1 --as-needed --add-needed
--build-id --no-allow-shlib-undefined --no-undefined-version -z now -z muldefs
-z relro --fatal-warnings --add-needed --build-id --no-allow-shlib-undefined
--no-undefined-version -z now -z muldefs -z relro --fatal-warnings -soname
libefivar.so.1 --version-script=libefivar.map crc32.o dp.o dp-acpi.o dp-hw.o
dp-media.o dp-message.o efivarfs.o error.o export.o guid.o guid-symbols.o lib.o
vars.o time.o -ldl -lgcc --push-state --as-needed -lgcc_s --pop-state -lc -lgcc
--push-state --as-needed -lgcc_s --pop-state
/usr/lib/gcc/x86_64-pc-linux-gnu/11.2.0/crtendS.o
/usr/lib/gcc/x86_64-pc-linux-gnu/11.2.0/../../../../lib64/crtn.o -T guids.lds
    Executable: /usr/x86_64-pc-linux-gnu/binutils-bin/2.37_p1/ld
 Control Group:
/user.slice/user-1000.slice/user@1000.service/app.slice/app-org.kde.konsole\x20\x281\x29-396082e66f1f4eebad232d9b0f7e0414.scope
          Unit: user@1000.service
     User Unit:
app-org.kde.konsole\x20\x281\x29-396082e66f1f4eebad232d9b0f7e0414.scope
         Slice: user-1000.slice
     Owner UID: 1000 (huettel)
       Boot ID: 09285116397b43cf8efdfe10efc785a7
    Machine ID: 7c495b4863a12cc008574dfa604a257d
      Hostname: pinacolada
       Storage:
/var/lib/systemd/coredump/core.ld.1000.09285116397b43cf8efdfe10efc785a7.1001324.1643593233000000.zst
(present)
     Disk Size: 240.1K
       Message: Process 1001324 (ld) of user 1000 dumped core.

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Reading symbols from /usr/x86_64-pc-linux-gnu/binutils-bin/2.37_p1/ld...
Reading symbols from
/usr/lib/debug//usr/x86_64-pc-linux-gnu/binutils-bin/2.37_p1/ld.bfd.debug...
[New LWP 1001324]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Core was generated by
`/usr/lib/gcc/x86_64-pc-linux-gnu/11.2.0/../../../../x86_64-pc-linux-gnu/bin/ld'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  __strcmp_avx2_rtm () at ../sysdeps/x86_64/multiarch/strcmp-avx2.S:106
106             VPCMPEQ (%rsi), %ymm1, %ymm0
(gdb) bt
#0  __strcmp_avx2_rtm () at ../sysdeps/x86_64/multiarch/strcmp-avx2.S:106
#1  0x00007f1b63cd57fe in _bfd_generic_link_add_one_symbol
(info=info@entry=0x55ec85623c80 <link_info>, abfd=0x55ec86e76c90,
name=0x55ec8708626d "_efi_set_variable", 
    flags=<optimized out>, section=0x55ec87074d88, value=3376, string=0x0,
copy=false, collect=false, hashp=0x55ec870822a8)
    at
/tmp/portage/sys-devel/binutils-2.37_p1/work/binutils-2.37/bfd/linker.c:1685
#2  0x00007f1b63d1427e in elf_link_add_object_symbols (info=<optimized out>,
abfd=0x55ec86e76c90)
    at
/tmp/portage/sys-devel/binutils-2.37_p1/work/binutils-2.37/bfd/elflink.c:4957
#3  bfd_elf_link_add_symbols (abfd=0x55ec86e76c90, info=<optimized out>) at
/tmp/portage/sys-devel/binutils-2.37_p1/work/binutils-2.37/bfd/elflink.c:5971
#4  0x000055ec854efd6c in load_symbols (entry=entry@entry=0x55ec86e64c80,
place=place@entry=0x7fffe8dc2a40)
    at
/tmp/portage/sys-devel/binutils-2.37_p1/work/binutils-2.37/ld/ldlang.c:3157
#5  0x000055ec854f0951 in load_symbols (place=0x7fffe8dc2a40,
entry=0x55ec86e64c80) at
/tmp/portage/sys-devel/binutils-2.37_p1/work/binutils-2.37/ld/ldlang.c:3027
#6  open_input_bfds (s=0x55ec86e64c80, mode=mode@entry=OPEN_BFD_NORMAL) at
/tmp/portage/sys-devel/binutils-2.37_p1/work/binutils-2.37/ld/ldlang.c:3627
#7  0x000055ec854f47af in lang_process () at
/tmp/portage/sys-devel/binutils-2.37_p1/work/binutils-2.37/ld/ldlang.c:7986
#8  0x000055ec854df619 in main (argc=<optimized out>, argv=<optimized out>) at
/tmp/portage/sys-devel/binutils-2.37_p1/work/binutils-2.37/ld/ldmain.c:502
(gdb)

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