Re: next-20180605 - kernel tried to execute NX-protected page - exploit attempt?

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On Thu, 07 Jun 2018 18:41:35 -0400, valdis.kletnieks@xxxxxx said:
> On Thu, 07 Jun 2018 17:14:01 -0400, Mike Snitzer said:
> > Can you please share what you test is?  We've gotten lots of reports
> > with failure following wake_up but I don't have a canned test to trigger
>
> Just a laptop with 16G of RAM, no clear reproducer -  Chrome with a lot of
> tabs, a mail reader, a bunch of SSH windows, and the next thing I know, it's
> locked up good and solid with wreckage in /sys/fs/pstore :)
>
> I got bit a third time a little while ago.  Will test the patches and see if
> they help - looks like I'm averaging two hours or so of active use before it
> hits, so it shouldn't take long before I know if the issue is swatted...

Looks like those two patches from Jens fixed the issue - this build has been up for
20 hours, and has survived a kernel build, an OpenWRT/Lede build, and a backup,
along with a bunch of other stuff.

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