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Bug 591827 - Crash due to non-threadsafe use of libgcrypt/gnutls
Summary: Crash due to non-threadsafe use of libgcrypt/gnutls
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: gtk-vnc
Version: 6.0
Hardware: All
OS: Linux
Target Milestone: rc
: ---
Assignee: Daniel Berrangé
QA Contact: desktop-bugs@redhat.com
Depends On:
TreeView+ depends on / blocked
Reported: 2010-05-13 09:50 UTC by Daniel Berrangé
Modified: 2010-11-15 13:58 UTC (History)
2 users (show)

Fixed In Version: gtk-vnc-0.3.10-2.el6
Doc Type: Bug Fix
Doc Text:
Clone Of: 537489
Last Closed: 2010-11-15 13:58:40 UTC
Target Upstream Version:

Attachments (Terms of Use)
Fix gcrypt threading initialization (1.70 KB, patch)
2010-05-13 09:52 UTC, Daniel Berrangé
no flags Details | Diff

Description Daniel Berrangé 2010-05-13 09:50:48 UTC
+++ This bug was initially created as a clone of Bug #537489 +++

abrt detected a crash.

Comment: Trying to open a console in virt-manager of a machine on another host.
Attached file: backtrace
cmdline: python /usr/share/virt-manager/virt-manager.py
component: python
executable: /usr/bin/python
package: python-2.6.2-2.fc12
rating: 3
reason: Process was terminated by signal 6

--- Additional comment from dmalcolm@redhat.com on 2009-11-13 15:35:19 EST ---

Thanks for filing this bug.

From the backtrace, it looks like an assertion failed; frame 2 of thread 1 has:
  Assertion `*lock == ((ath_mutex_t) 0)' failed.
in _gcry_ath_mutex_lock, deep inside gvnc_start_tls (frame 21) within gvnc_initialize (frame 24).

So it looks like an assertion failure deep inside gvnc's TLS code, which causes the process to abort.

Reassigning component from "python" to "virt-manager" in the hope that someone with knowledge of that domain can assign it to a more appropriate component.

He or she will probably want to know which version of virt-manager, libvirt, etc you have installed.

--- Additional comment from jlayton@redhat.com on 2009-11-13 15:41:49 EST ---

Here's the versions of those two:


...let me know if you need other info.

--- Additional comment from berrange@redhat.com on 2009-12-17 13:42:02 EST ---

Fix built in gtk-vnc-0.3.10-2.fc12

This fixes the problem as far as GTK-VNC is concerned. It'll likely still crash though because of an identical bug in libvirt https://bugzilla.redhat.com/show_bug.cgi?id=544305

Comment 2 Daniel Berrangé 2010-05-13 09:52:12 UTC
Created attachment 413700 [details]
Fix gcrypt threading initialization

Comment 3 RHEL Program Management 2010-05-13 14:06:24 UTC
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux major release.  Product Management has requested further
review of this request by Red Hat Engineering, for potential inclusion in a Red
Hat Enterprise Linux Major release.  This request is not yet committed for

Comment 4 Daniel Berrangé 2010-05-13 15:06:57 UTC
Fix built in gtk-vnc-0.3.10-2.el6

Comment 6 Radek Lat 2010-10-11 09:38:55 UTC
Could you please retest with the latest RC?

Comment 7 Daniel Berrangé 2010-10-13 12:28:34 UTC
This is quite hard to reproduce, but in my testing there were no further crashes.

Comment 8 Radek Lat 2010-10-13 14:44:52 UTC
Thank you for your report.

Comment 9 releng-rhel@redhat.com 2010-11-15 13:58:40 UTC
Red Hat Enterprise Linux 6.0 is now available and should resolve
the problem described in this bug report. This report is therefore being closed
with a resolution of CURRENTRELEASE. You may reopen this bug report if the
solution does not work for you.

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