Messages in this thread | | | Date | Mon, 14 Jul 2003 16:32:59 -0400 | From | Marc Heckmann <> | Subject | Re: 2.4.21 smp: system lockup |
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Hi there,
just realised that I forgot to run ksymoops over the sysrq+t output.
the resolved output is attached. (it's big, so I had to gzip it.i sorry ).
Also, I was wondering if the deadlock I encountered might whave been the IO-pausing under SMP systems that people have been talking about?
thanks in advance.
-m
On Sat, Jul 12, 2003 at 01:10:02PM -0400, Marc Heckmann wrote: > Hi, > > I recently experienced a lockup on an SMP 2.4.21 kernel (vanilla). > > The machine was under very heavy IO at the time. (a full backup was in > progress). gzipped Alt+sysrq+t output is attached. I forgot > Alt+sysrq+P unfortunatly. > > iptables was still functional, it still responded to pings, but > everything else was locked up. obviously sysrq was still working. I > managed to reboot it with sysrq+b over the serial line. > > the machine has been in production for a while and has run in the past > for almost 2 months w/o any problems, so I don't believe it's hardware > related. > > A similar lockup happened once with the redhat 2.4.20-13.9 kernel. I > blamed that on all the extra patches present and switched to 2.4.21 > hoping that it would alleviate the problem. > > PS: I'm not an linux-kernel so please CC me directly. > > -m
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