Messages in this thread | | | Date | Mon, 31 Jul 2023 21:24:50 +0200 | Subject | Re: [PATCH v8 1/4] fs/proc/kcore: avoid bounce buffer for ktext data | From | David Hildenbrand <> |
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On 31.07.23 21:21, Lorenzo Stoakes wrote: > On Mon, Jul 24, 2023 at 08:23:55AM +0200, David Hildenbrand wrote: >> Hi, >> >>> >>> I met this too when I executed below command to trigger a kcore reading. >>> I wanted to do a simple testing during system running and got this. >>> >>> makedumpfile --mem-usage /proc/kcore >>> >>> Later I tried your above objdump testing, it corrupted system too. >>> >> >> What do you mean with "corrupted system too" -- did it not only fail to >> dump the system, but also actually harmed the system? >> >> @Lorenzo do you plan on reproduce + fix, or should we consider reverting >> that change? >> >> -- >> Cheers, >> >> David / dhildenb >> > > Apologies I mised this, I have been very busy lately not least with book :) > > Concerning, I will take a look as I get a chance. I think the whole series > would have to be reverted which would be... depressing... as other patches > in series eliminates the bounce buffer altogether. >
I spotted
https://lkml.kernel.org/r/069dd40aa71e634b414d07039d72467d051fb486.camel@gmx.de
today, maybe that's related.
-- Cheers,
David / dhildenb
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