On Tue, 2007-09-11 at 02:10 +0000, David Bahi wrote: > trying to get a crashdump in a clean -rt series kernel which hardlocks > on the ltp openposix conformance interfaces sched_yield 1-1.test ... > > i was trying with nmi_watchdog = 1 (x86_64 machine, dual cpu, quad core, > HT enabled) and it would report NMI LOCKUP on presentation of the login > prompt - no chance to run the test. > > linux-2.6.22.1-rt9 linux-2.6.23-rc4-rt1 > lockup on openposix > sched_yield test occurs yes yes > > crash on login prompt > with nmi_watchdog=1 yes* yes* > > (*) console logs attached > >
fyi 2.6.23-rc4 w/o -rt passes the LTP openposix sched_yeild test and does *not* crash (NMI LOCKUP) if nmi_watchdog=1 is a boot arg. so these don't seem to be related to what i'm seeing at least: http://thread.gmane.org/gmane.linux.kernel/577449 db
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