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[Bug 1292560] Re: unity-settings-daemon crashed with SIGSEGV in malloc_consolidate()


In my system, running Vivid, the SegvAnalysis shows the source as
"0x18(%rax)", but the address is 0x00000018 (which it also says it's not
located in a known VMA). The StacktraceTop shows pa_hashmap_new_full
instead of pa_hashmap_new. Apart from that, the details are basically
identical to those of this bug report.

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  unity-settings-daemon crashed with SIGSEGV in malloc_consolidate()

Status in pulseaudio package in Ubuntu:

Bug description:
  I booted the system and got this error.

  ProblemType: Crash
  DistroRelease: Ubuntu 14.04
  Package: unity-settings-daemon 14.04.0+14.04.20140310-0ubuntu1
  ProcVersionSignature: Ubuntu 3.13.0-17.37-generic 3.13.6
  Uname: Linux 3.13.0-17-generic x86_64
  ApportVersion: 2.13.3-0ubuntu1
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Fri Mar 14 11:03:04 2014
  ExecutablePath: /usr/lib/unity-settings-daemon/unity-settings-daemon
  ProcCmdline: /usr/lib/unity-settings-daemon/unity-settings-daemon
   PATH=(custom, user)
   Segfault happened at: 0x7f0b5c9ae583 <malloc_consolidate+307>:	cmp    0x18(%rax),%rbx
   PC (0x7f0b5c9ae583) ok
   source "0x18(%rax)" (0x7f0b5ccee7e80018) not located in a known VMA region (needed readable region)!
   destination "%rbx" ok
  SegvReason: reading unknown VMA
  Signal: 11
  SourcePackage: unity-settings-daemon
   malloc_consolidate (av=av@entry=0x7f0b5ccee760 <main_arena>) at malloc.c:4157
   _int_malloc (av=av@entry=0x7f0b5ccee760 <main_arena>, bytes=bytes@entry=1056) at malloc.c:3423
   __libc_calloc (n=<optimized out>, elem_size=<optimized out>) at malloc.c:3219
   pa_xmalloc0 () from /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-4.0.so
   pa_hashmap_new () from /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-4.0.so
  Title: unity-settings-daemon crashed with SIGSEGV in malloc_consolidate()
  UpgradeStatus: Upgraded to trusty on 2013-12-06 (97 days ago)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

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