freebsd-head: suddenly NMI panics lead to ddb being unable to stop CPUs?

[Adrian Chadd]

Hi!

This has started happening on -HEAD recently. No, I don't have any
more details yet than "recently."

Whenever I get an NMI panic (and getting an NMI is a separate issue,
sigh) I get a slew of "failed to stop cpu" messages, and all CPUs
enter ddb. This is .. sub-optimal. Has anyone seen this? Does anyone
have any ideas?


-adrian