WebKitPluginProcess crashed with SIGSEGV in start_thread()

[Swarnendu Biswas]

I was using Web (Epiphany) and had open grooveshark and youtube in separate tabs. The crash message appeared when I closed the browser.

ProblemType: Crash
DistroRelease: Ubuntu 13.04
Package: libwebkit2gtk-3.0-0 1.11.91-1ubuntu1~raring5 [origin: LP-PPA-gnome3-team-gnome3]
ProcVersionSignature: Ubuntu 3.8.0-17.27-generic 3.8.6
Uname: Linux 3.8.0-17-generic x86_64
ApportVersion: 2.9.2-0ubuntu5
Architecture: amd64
Date: Mon Apr 8 21:14:50 2013
ExecutablePath: /usr/lib/webkit2gtk-3.0/libexec/WebKitPluginProcess
InstallationDate: Installed on 2012-11-25 (134 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
MarkForUpload: True
ProcCmdline: /usr/lib/webkit2gtk-3.0/libexec/WebKitPluginProcess 14 /usr/lib/mozilla/plugins/flashplugin-alternative.so
SegvAnalysis:
 Segfault happened at: 0x7f4fbe215b05: mov (%rbx),%rax
 PC (0x7f4fbe215b05) ok
 source "(%rbx)" (0x7f4f94474000) not located in a known VMA region (needed readable region)!
 destination "%rax" ok
 Stack memory exhausted (SP below stack segment)
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: webkitgtk
StacktraceTop:
 ?? () from /usr/lib/mozilla/plugins/flashplugin-alternative.so
 ?? () from /usr/lib/mozilla/plugins/flashplugin-alternative.so
 ?? () from /usr/lib/mozilla/plugins/flashplugin-alternative.so
 ?? () from /usr/lib/mozilla/plugins/flashplugin-alternative.so
 start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
Title: WebKitPluginProcess crashed with SIGSEGV in start_thread()
UpgradeStatus: Upgraded to raring on 2013-02-28 (39 days ago)
UserGroups: adm cdrom dip libvirtd lpadmin plugdev sambashare sudo

[Ubuntu GNOME (ug-bot)]

Thank you for reporting this bug to Ubuntu. raring reached EOL on Jan 27, 2014.
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