[Bug binutils/17421] New: Internal error in output_insn during kernel build

[geoff+sourceware at geoffhill dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=17421

            Bug ID: 17421
           Summary: Internal error in output_insn during kernel build
           Product: binutils
           Version: 2.24
            Status: NEW
          Severity: normal
          Priority: P2
         Component: binutils
          Assignee: unassigned at sourceware dot org
          Reporter: geoff+sourceware at geoffhill dot org

Created attachment 7799
  --> https://sourceware.org/bugzilla/attachment.cgi?id=7799&action=edit
/proc/cpuinfo

Recently attempted a Linux kernel build, and several files fail to assemble
using GNU as 2.24 on one of my machines, throwing an internal error in the x86
output_insn function.

Note that this error only occurs on one of my three machines (Haswell CPU), the
other two (Phenom II and Sandy Bridge CPUs) are unaffected despite using the
same package versions and kernel build configuration. /proc/cpuinfo attached.

Using Arch Linux binutils 2.24-7 package, and building the current snapshot of
Linus' tree (3c2ea7024) with a silentoldconfig configuration.

> export KCFLAGS="-march=native -O2 -pipe"
> export KCPPFLAGS="-march=native -O2 -pipe"
> make -j4
  CHK     include/config/kernel.release
  CHK     include/generated/uapi/linux/version.h
  CHK     include/generated/utsrelease.h
  CALL    scripts/checksyscalls.sh
  CHK     include/generated/compile.h
  CHK     kernel/config_data.h
  CC      arch/x86/boot/cpucheck.o
  VOFFSET arch/x86/boot/voffset.h
{standard input}: Assembler messages:
{standard input}:32: Internal error, aborting at
/build/binutils/src/binutils-2.24/gas/config/tc-i386.c line 6969 in output_insn
Please report this bug.
scripts/Makefile.build:257: recipe for target 'arch/x86/boot/cpucheck.o' failed
make[1]: *** [arch/x86/boot/cpucheck.o] Error 1
make[1]: *** Waiting for unfinished jobs....

Will try to generate a more minimal repro than a kernel build though.

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