Messages in this thread | | | Date | Sat, 24 Nov 2007 00:07:47 +0100 | From | devzero@web ... | Subject | Re: OT: Re: System reboot triggered by just reading a device file....!? |
| |
Hi Clemens,
> > Hi, Roland! > > Please don't top-post.
sorry!
> > > [was: it would be easy to disable the kernel watchdog] > > thanks, but i know i could do this. > > Good. I was also curious and just checked again. The watchdog subsystem > is by default _disabled_ in the kernel configuration. If you use some > distro's kernel, where they turned it on, complain to them! > If you turned it on yourself, you are really on your own... > the Kconfig help there is IMO sufficient and very clear and, > "If unsure, say N". Hmm... sorry?!
whoops - sorry for that. i should have checked that, but i think i just didn`t expect some distro vendor to change that default. sure i will complain to suse now. stopping getting on your nerves here, now.
> > this thread is not meant to protect myself from this curiousity but it is meant > > to protect others. it`s a trap. > > I guess I understand your position. But I don't see no way to improve > the kernel in that point. > Complain to the guys who enabled the watchdog / setup this trap for > any reason.
sure. you`re completely right.
> > i stepped into that. > > now i know that trap, so i can easily sidestep. > > it maybe very seldom that someone steps into this. > > but it may happen and then someone will have trouble and spend time on this. > > i think every admin can tell you about weird random reboots of his systems > > which he cannot explain what was the reason for it. > > That's one possible way of "learning by doing suicide (tm);"
:)
> > this maybe some of those reasons and this one could be avoided. > > i`m thinking of something simple like echo "now you`re armed" > /dev/watchdog > > Read some details about watchdogs to get more background and why the > watchdog is triggered so easily and why it's good this way. > i.e: http://www.ganssle.com/watchdogs.pdf
thanks for your help and for that very useful link. that`s the very best stuff i every read about watchdogs!
regards Roland
__________________________________________________________________________ Erweitern Sie FreeMail zu einem noch leistungsstärkeren E-Mail-Postfach! Mehr Infos unter http://produkte.web.de/club/?mc=021131
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |