mdadm crashed with SIGSEGV in __libc_start_main()

[Steve Beattie]

Binary package hint: mdadm

This bug report is intended to capture a backtrace for bug 316670, which it will be a duplicate of.

Steps to recreate:
1) create 4 empty loopback disks:

  for i in $(seq 1 4) ; do
      dd if=/dev/zero of=disk${i} bs=1024 count=512000
      sudo losetup /dev/loop${i} disk${i}
  done

2) create raid10 array

  sudo mdadm -C /dev/md0 -l raid10 -n 4 /dev/loop{1,2,3,4}

3) stop the array:

  sudo mdadm --stop /dev/md0

4) incrementally assemble the first loop device

  sudo mdadm --incremental /dev/loop1

et voila, segv.

ProblemType: Crash
Architecture: i386
DistroRelease: Ubuntu 9.04
ExecutablePath: /sbin/mdadm
Package: mdadm 2.6.7.1-1ubuntu7
ProcAttrCurrent: unconfined
ProcCmdline: mdadm --incremental /dev/loop1
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_IN.UTF-8
 SHELL=/bin/bash
Signal: 11
SourcePackage: mdadm
Stacktrace:
 #0 0x0804fe08 in ?? ()
 #1 0x080602f6 in ?? ()
 #2 0x0804cc9c in ?? ()
 #3 0xb7dbd775 in __libc_start_main () from /lib/tls/i686/cmov/libc.so.6
 #4 0x08049c31 in ?? ()
StacktraceTop:
 ?? ()
 ?? ()
 ?? ()
 __libc_start_main () from /lib/tls/i686/cmov/libc.so.6
 ?? ()
Title: mdadm crashed with SIGSEGV in __libc_start_main()
Uname: Linux 2.6.28-11-generic i686
UserGroups:

[Apport retracing service (apport)]

StacktraceTop:enough (level=10, raid_disks=4, layout=258, clean=1, avail=0x0,
Incremental (devname=0xbf938a5f "/dev/loop1", verbose=0,
main (argc=3, argv=0xbf9372f4) at mdadm.c:1373