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OpenBSD Journal
The OpenBSD Community.

OpenBSD Journal
  • Call for testing: Concurrent malloc(3) calls (to speed up firefox)
    Mark Kettenis (kettenis@) posted to tech@ asking Firefox users and others to test a patch that changes the threadsafe malloc(3) strategy from spinlocks to mutexes. Mark writes,

    Firefox makes a lot of concurrent malloc(3) calls. The locking to make malloc(3) thread-safe is a bit...suboptimal. This diff makes things better by using a mutex instead of spinlock. If you're running Firefox you want to try it; it makes video watchable on some machines. If you're not running Firefox you want to try it; to make sure it doesn't break things.

    Testing this requires a recent -current (5.9-beta) system; grab the latest source, apply the patch, rebuild and report back any effects, good or bad.



  • OpenSSH: client bugs CVE-2016-0777 and CVE-2016-0778
    This is the most serious bug you'll hear about this week: the issues identified and fixed in OpenSSH are dubbed CVE-2016-0777 and CVE-2016-0778.

    An early heads up came from Theo de Raadt in this mailing list posting.

    Until you are able to patch affected systems, the recommended workaround is to use

    # echo -e 'Host *\nUseRoaming no' >> /etc/ssh/ssh_config

    That is, add the option UseRoaming no to your /etc/ssh/ssh_config (or your user's ~/.ssh/config) file, or start your ssh client with -oUseRoaming=no included on the commandline.

    We will be updating this article with more information as it becomes available. Read more...

  • Xen Support Enabled in -current
    Those of you who have been following OpenBSD commits have no doubt noticed the recent work on supporting OpenBSD as a guest on the Xen hypervisor.
    Read more...

  • Pre-5.9 pledge(2) update
    In a continuing series of pledge(2) reports, Theo de Raadt (deraadt@) gives us the latest update before the 5.9 freeze. Read more...


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