http://bugzilla.novell.com/show_bug.cgi?id=584554 http://bugzilla.novell.com/show_bug.cgi?id=584554#c0 Summary: random 61s soft lockups using xenified kernel 2.6.31.12 or even 2.6.33-25 Classification: openSUSE Product: openSUSE 11.2 Version: Final Platform: x86-64 OS/Version: openSUSE 11.2 Status: NEW Severity: Critical Priority: P5 - None Component: Kernel AssignedTo: kernel-maintainers@forge.provo.novell.com ReportedBy: samuel.kvasnica@ims.co.at QAContact: qa@suse.de Found By: --- Blocker: --- Created an attachment (id=345885) --> (http://bugzilla.novell.com/attachment.cgi?id=345885) syslog snippet User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.7) Gecko/20100110 Mandriva Linux/1.9.1.7-0.1mdv2010.0 (2010.0) Firefox/3.5.7 We experience random "61s" CPU soft lockups on kernel 2.6.31.12-xen. We even verified the same behavior using the last head kernel 2.6.33-25-xen. We use drbd + xen configuration, 2 drbd partitions + 1 xen pvm guest. The system is running almost idle. We can observe (using snmp logging) rapid increase of load during the lockup. The system does not crash but the corresponding CPU will be loaded/blocked during this time. We are not able to determine what really triggers the lockup. High load does not seem to correlate. Typically, system would run up to 12hours cleanly before lockup happens. If lockup happens, more lockups will typically follow within few minutes. Afterwards, system runs cleanly again. Typically, there is the xen_safe_halt() on stack trace. The same system gives absolutely no lockups on older hardware (2-core Pentium-D, 8G RAM), 1 month uptime. Our hardware: -Supermicro X8SIL-F -Chipset Ibex Peak, XEON X3450 -8GB ECC RAM -Last BIOS updates applied -conservative BIOS settings -setting hyperthreading/turbo/c-states in BIOS make no difference Log of 2 last events is attached below (for 2.6.33 kernel but 2.6.31 looks very same). Reproducible: Sometimes Steps to Reproduce: 1. let system run 2. wait 3. wait, see above description... -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.