kscreenlocker crashed with SIGSEGV in _nl_find_locale()

[Jarkko Palviainen]

Binary package hint: kdebase-workspace

The crash occurred while desktop was just idling by itself.

$ lsb_release -rd
Description: Ubuntu karmic (development branch)
Release: 9.10

ProblemType: Crash
Architecture: i386
Date: Fri Sep 4 22:40:52 2009
DistroRelease: Ubuntu 9.10
ExecutablePath: /usr/lib/kde4/libexec/kscreenlocker
NonfreeKernelModules: nvidia
Package: kdebase-workspace-bin 4:4.3.1-0ubuntu1
ProcCmdline: /usr/lib/kde4/libexec/kscreenlocker
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
 LANGUAGE=
ProcVersionSignature: Ubuntu 2.6.31-9.29-generic
SegvAnalysis:
 Segfault happened at: 0x4e0747c <_nl_find_locale+1084>: mov %eax,0x10(%esi)
 PC (0x04e0747c) ok
 source "%eax" ok
 destination "0x10(%esi)" (0x08f6e520) in non-writable VMA region: 0x08f6e000-0x08f6f000 r--p None
SegvReason: writing VMA None
Signal: 11
SourcePackage: kdebase-workspace
StacktraceTop:
 _nl_find_locale (locale_path=<value optimized out>,
 *__GI_setlocale (category=11, locale=0xe41352 "")
 QCoreApplication::init() () from /usr/lib/libQtCore.so.4
 QCoreApplication::QCoreApplication(QCoreApplicationPrivate&)
 QApplication::QApplication(int&, char**, bool, int) ()
Title: kscreenlocker crashed with SIGSEGV in _nl_find_locale()
Uname: Linux 2.6.31-9-generic i686
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[Rich Johnson (nixternal)]

Was this a one time issue, as I cannot find anything upstream remotely similar to this, or does it occur other times as well? Thanks!

[Jarkko Palviainen (jarkko-palviainen)]

I think I've seen the crash occurring rarely (about 5 times or so) on this particular laptop in 3 months, but it's been a while since the last one. After the crash, the screensaver still activates normally when I wait the idle period, so there seems to be no harm done. Maybe it's related to upgraded packages when I haven't rebooted the machine yet.

[Jonathan Thomas (echidnaman)]

Apparently it's a glibc bug: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=547567

[jk (mail-j-k)]

Happened to me twice within the last hour.