User Tools

Site Tools


linux:ubuntu

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision
Previous revision
Last revision Both sides next revision
linux:ubuntu [2014/04/23 16:13]
steve [Trusty 14.04 Server]
linux:ubuntu [2014/05/08 17:50]
steve [Kernel Bug]
Line 3: Line 3:
 ===== Trusty 14.04 Server ===== ===== Trusty 14.04 Server =====
  
-Critical issue found when using Xen 4.4.  A kernel BUG is triggered.+==== Kernel Bug ==== 
 + 
 +<wrap em>Critical issue (with workaround)</wrap> found when using Xen 4.4.  A kernel BUG is triggered.
  
 <code> <code>
Line 32: Line 34:
 Apr 23 09:45:02 callisto kernel: [  186.725526] BUG: Bad rss-counter state mm:ffff8801264f8000 idx:0 val:-1 Apr 23 09:45:02 callisto kernel: [  186.725526] BUG: Bad rss-counter state mm:ffff8801264f8000 idx:0 val:-1
 Apr 23 09:45:02 callisto kernel: [  186.726785] BUG: Bad rss-counter state mm:ffff8801264f8000 idx:1 val:1 Apr 23 09:45:02 callisto kernel: [  186.726785] BUG: Bad rss-counter state mm:ffff8801264f8000 idx:1 val:1
 +[... repeats over and over ... ]
 </code> </code>
  
Line 43: Line 46:
 As soon as vsftpd tries to start, the bug is triggered. As soon as vsftpd tries to start, the bug is triggered.
  
 +<wrap center round info 60%>Workaround Found by installing the latest Ubuntu Mainline kernel.</wrap>
  
 +  wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.15-rc2-trusty/linux-image-3.15.0-031500rc2-generic_3.15.0-031500rc2.201404201435_amd64.deb
 +  dpkg -i linux-image-3.15.0-031500rc2-generic_3.15.0-031500rc2.201404201435_amd64.deb
 +  # Reboot server.
 +  
 +A bug report has been opened: https://bugs.launchpad.net/ubuntu/+source/vsftpd/+bug/1313450
linux/ubuntu.txt · Last modified: 2014/05/27 17:55 by steve