Messages in this thread | | | Subject | kstopmachine thread panic in do_exit (2.6.9-rc1-bk1) | From | Nathan Lynch <> | Date | Thu, 26 Aug 2004 12:11:14 -0500 |
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Hi-
Something crept in between 2.6.9-rc1 and 2.6.9-rc1-bk1 which reliably trips the "Aiee, killing interrupt handler!" panic in do_exit when offlining a cpu. I inserted a BUG() before the panic call to see what's causing it, looks like one of the kstopmachine threads spawned by stop_machine. I can't do a comparison with current -mm because offlining a cpu doesn't even get that far there.
Backing out the most recent sched.c change ("sched: smt fixes" as of this writing) fixes it. Turning off preempt seems to work around it. The bug is still present in -bk2. I'm seeing this on a 4-way ppc64 machine.
Nathan
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