[Ksummit-2012-discuss] [ATTEND] kernel core dump and "dying breath"
jkosina at suse.cz
Mon Jun 25 21:56:53 UTC 2012
On Mon, 25 Jun 2012, Dave Jones wrote:
> > > I'm still not convinced any of this would be particularly useful. What
> > > would be a thousand times more useful would be having working scrollback
> > > when we panic, like we had circa 2.2
> > Admittedly my memory is not particularly good, so could please remind me
> > -- did the scrollback work in the 2.2 era also with USB keyboards?
> > I can quite easily imagine how to make it work with PS/2. USB, when
> > paniced, not really.
> That may have been the turning point at which it stopped working, which
> would explain it. Shame.
There also was a funny patchset which made the kernel output the panic
message and stacktrace via morsecode on keyboard LEDs.
Same problem -- easy on PS/2 keyboards, but scheduling all the work
necessary for completing URBs is just not possible from inside panic.
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