qemubuilder crashed with SIGSEGV in fork_qemu()

[Daniel Winzen]

I just typed 'sudo qemubuilder --create --architecture armel --distribution wheezy --mirror http://ftp.debian.org/debian' into terminal and waited until it finished, but after a few minutes it crashed. It also crashes when running 'sudo qemubuilder --update'.

ProblemType: Crash
DistroRelease: Ubuntu 12.10
Package: qemubuilder 0.70
ProcVersionSignature: Ubuntu 3.5.0-5.5-generic 3.5.0-rc7
Uname: Linux 3.5.0-5-generic x86_64
ApportVersion: 2.4-0ubuntu3
Architecture: amd64
Date: Fri Jul 20 23:38:16 2012
ExecutablePath: /usr/sbin/qemubuilder
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120403)
ProcCmdline: qemubuilder --create --architecture armel --distribution wheezy --mirror http://ftp.debian.org/debian
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x7f832b1cf401: movdqu (%rdi),%xmm1
 PC (0x7f832b1cf401) ok
 source "(%rdi)" (0x00000000) not located in a known VMA region (needed readable region)!
 destination "%xmm1" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: cowdancer
StacktraceTop:
 ?? () from /lib/x86_64-linux-gnu/libc.so.6
 ?? ()
 ?? ()
 ?? ()
 __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
Title: qemubuilder crashed with SIGSEGV in __libc_start_main()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

[Apport retracing service (apport)]

StacktraceTop:
 fork_qemu (hda=0x10271d0 "/var/cache/pbuilder/base.qemu", hdb=0x10270c0 "/var/cache/pbuilder/build//qemu.7703.dev", pc=pc@entry=0x608960) at qemubuilder.c:316
 cpbuilder_create (pc=pc@entry=0x608960) at qemubuilder.c:799
 parse_parameter (ac=<optimized out>, av=0x7fff766ed688, keyword=0x404f47 "qemu") at parameter.c:563
 __libc_start_main (main=0x4018a0 <main>, argc=8, ubp_av=0x7fff766ed688, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff766ed678) at libc-start.c:226
 _start ()

[Daniel Winzen (q-d-deactivatedaccount)]

This bug also occurs when running 'sudo qemubuilder --update'.

[Jessica Clarke (jrtc27)]

In Ubuntu 12.10, "qemubuilder.c:316" was "argv[argc++]=strdupa(kernel_image)" (version 0.69 of cowdancer). This crash is because no KERNEL_IMAGE was given in pbuilderrc. A fix has been committed, and will be included in the next upload. Please see the linked Debian bug for more information.

[Launchpad Janitor (janitor)]

This bug was fixed in the package cowdancer - 0.80ubuntu1

---------------
cowdancer (0.80ubuntu1) yakkety; urgency=medium

  * Build with -02 in ppc64el, try to fix FTBFS

 -- Mattia Rizzolo <email address hidden> Wed, 01 Jun 2016 17:02:56 +0000