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[Qemu-devel] [Bug 1311614] Re: qemu-arm segfaults with gcc 4.9.0


From: Alexander
Subject: [Qemu-devel] [Bug 1311614] Re: qemu-arm segfaults with gcc 4.9.0
Date: Wed, 23 Apr 2014 11:47:00 -0000

And of course i rebuilt rpm package with latest gcc 4.9.0
Btw all working fine on a real hardware.

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https://bugs.launchpad.net/bugs/1311614

Title:
  qemu-arm segfaults with gcc 4.9.0

Status in QEMU:
  New

Bug description:
  I have an ARM chroot that working with qemu-arm emulation

  address@hidden fedya]# cat /proc/sys/fs/binfmt_misc/arm
  enabled
  interpreter /usr/bin/qemu-arm-binfmt
  flags: P
  offset 0
  magic 7f454c4601010100000000000000000002002800
  mask ffffffffffffff00fffffffffffffffffeffffff

  
  In chroot installed gcc dependencies with 4.9.0 version

  sudo rpm --root /home/fedya/root/ -qa | grep 4.9.0

  libgcc1-4.9.0_2014.04-1-omv2013.0.armv7hl
  libgomp1-4.9.0_2014.04-1-omv2013.0.armv7hl
  libstdc++6-4.9.0_2014.04-1-omv2013.0.armv7hl
  gcc-4.9.0_2014.04-1-omv2013.0.armv7hl
  gcc-cpp-4.9.0_2014.04-1-omv2013.0.armv7hl
  libstdc++-devel-4.9.0_2014.04-1-omv2013.0.armv7hl
  gcc-c++-4.9.0_2014.04-1-omv2013.0.armv7hl

  
  When i try to run "rpm" , "rpmbuild", "rpm2cpio"command i always see qemu 
segfault message

  
  example:

  address@hidden /]# uname -a
  Linux filzbach.lindev.ch 3.13.6-nrjQL-desktop-70omv #1 SMP PREEMPT Wed Mar 12 
21:40:00 UTC 2014 armv7l armv7l armv7l GNU/Linux

  address@hidden /]# rpm
  qemu: uncaught target signal 11 (Segmentation fault) - core dumped

  
  Segfault became apparent only after gcc upgrade from 4.8.3 to 4.9.0.

  When i downgrade it to 4.8.3 all working fine again.
  It looks like a qemu bug with gcc.

  
  P.S.
  I tried to rebuild qemu with gcc 4.9.0
  I tried to build qemu from git sources, from fedora sources, from suse 
sources etc.

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