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Package: linux-image-2.6.26-2-openvz-amd64 Version: 2.6.26-2 I've got a VPS node running 2.6.26-2-openvz-amd64 and several guest machines. My kernel keeps reporting a printk bug in syslog: VPS-NODE:~# cat /var/log/syslog | grep recursion Mar 5 10:15:30 VPS-NODE kernel: BUG: recent printk recursion! Mar 5 10:15:35 VPS-NODE kernel: BUG: recent printk recursion! Mar 5 10:15:37 VPS-NODE kernel: BUG: recent printk recursion! Mar 5 10:15:43 VPS-NODE kernel: [896780.607831] BUG: recent printk recursion! Mar 5 10:15:47 VPS-NODE kernel: BUG: recent printk recursion! Mar 5 10:15:52 VPS-NODE kernel: BUG: recent printk recursion! I have found similar reports here: http://forum.openvz.org/index.php?t=msg&goto=36696 http://bugzilla.openvz.org/show_bug.cgi?id=1284 I followed the guide to reproduce the problem on fresh install and I managed to do so: 1. Installed fresh Debian with 2.6.26-2-amd64 kernel 2. Installed linux-image-2.6.26-2-openvz-amd64 3. Edited /etc/sysctl.conf to forward traffic and allow proxy_arp 4. Reboot 5. Downloaded template form http://download.openvz.org/template/precreated/debian-5.0-x86.tar.gz to /vz/templates/cache 6. Created container with IP 192.168.1.3 7. Installed syslog inside the container and applied followin firewall rules: :INPUT ACCEPT [0:0] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [0:0] -A INPUT -i lo -j ACCEPT -A INPUT -d 192.168.1.3 -p tcp --dport 22 -j ACCEPT -A INPUT -d 192.168.1.3 -j LOG -A INPUT -d 192.168.1.3 -j DROP COMMIT 8. Allowed all traffic through venet0 on HN and :INPUT ACCEPT [0:0] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [0:0] -A INPUT -i lo -j ACCEPT -A INPUT -d 192.168.1.2 -p tcp --dport 22 -j ACCEPT -A INPUT -d 192.168.1.2 -j LOG -A INPUT -d 192.168.1.2 -j DROP COMMIT If I start hitting the HN IP address from other machine on any other port than 22 I get nice logging in /var/log/syslog until any attempt to connect to 192.168.1.3 on any blocked port. Once this is done I get: BUG: recent printk recursion! in HN and VPS logs. to the container, at which point all logging to both stops. Got a cool Hotmail story? Tell us now |