ld segfaults building a kernel image on armel

[Oliver Grawert]

Binary package hint: binutils

  ld -EL --defsym zreladdr=0x80008000 --defsym initrd_phys=0x80800000 --defsym params_phys=0x80000100 -p --no-undefined -X /usr/lib/gcc/arm-linux-gnueabi/4.4.1/libgcc.a -T arch/arm/boot/compressed/vmlinux.lds arch/arm/boot/compressed/head.o arch/arm/boot/compressed/pi
ggy.o arch/arm/boot/compressed/misc.o -o arch/arm/boot/compressed/vmlinux

causes the kernel build to fail with a segfault ...

[Oliver Grawert (ogra)]

using binutils 2.19.51.20090423-0ubuntu2 makes the segfault go away

[Matthias Klose (doko)]

http://sourceware.org/ml/binutils/2009-05/msg00220.html

Paul Brook schrieb:
> The patch below implements linker processing of ARM unwinding tables
> (SHT_ARM_EXIDX).
>
> 2009-05-05 Paul Brook <email address hidden>
>
> bfd/
> * bfd-in.h (elf32_arm_fix_exidx_coverage): Add prototype.
> * bfd-in2.h: Regenerate.
> * elf32-arm.c (arm_unwind_edit_type, arm_unwind_table_edit): Define.
> (_arm_elf_section_data): Add text and exidx fields.
> (add_unwind_table_edit, get_arm_elf_section_data, adjust_exidx_size,
> insert_cantunwind_after, elf32_arm_fix_exidx_coverage, offset_prel31,
> copy_exidx_entry): New functions.
> (elf32_arm_write_section): Fixup .ARM.exidx contents.
>
> ld/
> * emultempl/armelf.em (compare_output_sec_vma): New function.
> (gld${EMULATION_NAME}_finish): Add exidx munging code.

This breaks kernel builds on arm-linux-gnueabi. Checked by reverting this
change. command line used and object files at https://launchpad.net/bugs/375991

  Matthias

Program received signal SIGSEGV, Segmentation fault.
bfd_set_section_size (abfd=0x0, ptr=0x7e5f8, val=8) at ../../bfd/section.c:1297
1297 if (abfd->output_has_begun)
(gdb) bt
#0 bfd_set_section_size (abfd=0x0, ptr=0x7e5f8, val=8) at ../../bfd/section.c:1297
#1 0x4005c60c in elf32_arm_fix_exidx_coverage (text_section_order=<value
optimized out>, num_text_sections=4,
    info=<value optimized out>) at ../../bfd/elf32-arm.c:8425
#2 0x00026980 in gldarmelf_linux_eabi_finish () at earmelf_linux_eabi.c:420
#3 0x00021ea8 in ldemul_finish () at ../../ld/ldemul.c:90
#4 0x0001ac08 in lang_process () at ../../ld/ldlang.c:6282
#5 0x0001f154 in main (argc=10000, argv=0x12) at ../../ld/ldmain.c:479

[Launchpad Janitor (janitor)]

This bug was fixed in the package binutils - 2.19.51.20090515-0ubuntu1

---------------
binutils (2.19.51.20090515-0ubuntu1) karmic; urgency=low

  * Snapshot, taken from the trunk 20090515.
    - Fix PR ld/10152. LP: #375991.
  * Revert work-around from last upload.
  * debian/*.shlibs: Update to the version from the trunk.
  * Build the binutils-gold package again.

 -- Matthias Klose <email address hidden> Fri, 15 May 2009 16:34:56 +0200

[Matthias Klose (doko)]

fixed in 20090516 trunk