[Bug 529714] Re: rhythmbox crashed with SIGSEGV in_nss_wins_gethostbyname_r()

[John Toliver]

@Brendan Peterfly,

When you get some time can you list the steps you took so I can duplicate it on my test machine.  Its not urgent however... At least for me it isn't.
-----Original Message-----
From: Brendan Peterffy <529714 at bugs.launchpad.net>
Sender: bounces at canonical.com
Date: Mon, 07 Feb 2011 09:48:23 
To: <john.toliver at gmail.com>
Reply-To: Bug 529714 <529714 at bugs.launchpad.net>
Subject: [Bug 529714] Re: rhythmbox crashed with SIGSEGV in
	_nss_wins_gethostbyname_r()

Okay, this is odd. I've gotten the source for samba using "apt-get source winbind", built it without optimizations, then used LD_PRELOAD to override the system's copy of libnss_wins.so with my fresh copy, then launched rhythmbox (which segfaulted whenever it tried to resolve a hostname.) and it isn't crashing! I'll do some investigating to see if it was gcc's optimizations that mucked it up or some other cause, but at least this is progress!
It's 5 AM here, so I ought to get to bed, but I'll dig deeper tomorrow!

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https://bugs.launchpad.net/bugs/529714

Title:
  rhythmbox crashed with SIGSEGV in_nss_wins_gethostbyname_r()

Status in “samba” package in Ubuntu:
  Confirmed

Bug description:
  Binary package hint: rhythmbox

  rhythmbox crashes when trying to access the Ubuntu One music store.

  ProblemType: Crash
  Architecture: i386
  Date: Sun Feb 28 16:05:20 2010
  DistroRelease: Ubuntu 10.04
  EcryptfsInUse: Yes
  ExecutablePath: /usr/bin/rhythmbox
  Package: rhythmbox 0.12.6git20100223-0ubuntu1
  ProcCmdline: rhythmbox
  ProcEnviron:
   LANG=en_CA.UTF-8
   SHELL=/bin/bash
  ProcVersionSignature: Ubuntu 2.6.32-14.20-generic
  SegvAnalysis:
   Segfault happened at: 0x223f682 <_nss_wins_gethostbyname_r+914>:	movl   $0x0,(%eax)
   PC (0x0223f682) ok
   source "$0x0" ok
   destination "(%eax)" (0x00000000) not located in a known VMA region (needed writable region)!
  SegvReason: writing NULL VMA
  Signal: 11
  SourcePackage: rhythmbox
  StacktraceTop:
_nss_wins_gethostbyname_r () from /lib/libnss_wins.so.2
_nss_wins_gethostbyname2_r () from /lib/libnss_wins.so.2
   ?? () from /lib/tls/i686/cmov/libc.so.6
   getaddrinfo () from /lib/tls/i686/cmov/libc.so.6
   ?? () from /usr/lib/libgio-2.0.so.0
  Title: rhythmbox crashed with SIGSEGV in_nss_wins_gethostbyname_r()
  Uname: Linux 2.6.32-14-generic i686
  UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

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Title:
  rhythmbox crashed with SIGSEGV in _nss_wins_gethostbyname_r()