Messages in this thread | | | Date | Fri, 3 Jul 2015 08:46:21 +0200 | Subject | Re: Possible regression due to "tick: broadcast: Prevent livelock from event handler" | From | Geert Uytterhoeven <> |
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Hi Simon,
On Fri, Jul 3, 2015 at 4:40 AM, Simon Horman <horms@verge.net.au> wrote: > I have observed what appears to be a regression while testing next-20150702 > which seems to be caused by 2951d5c031a3 ("tick: broadcast: Prevent > livelock from event handler"). > > The problem manifests on the emev2/kzm9d board as per the boot log below. > > The problem manifests when booting using the shmobile_defconfig, > which uses multiplatform and enables all devices using DT. > > The problem does not appear to always manifest but anecdotally it > seems to manifest more often of late (yes, I know that is vague).
> hctosys: unable to open rtc device (rtc0) > > The boot hangs here. > The next line should be: > > smsc911x 20000000.ethernet eth0: SMSC911x/921x identified at 0xc8880000, IRQ: 33
As you can reproduce it, can you please try enabling lockdep debugging?
Gr{oetje,eeting}s,
Geert
-- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds
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