Re: Bad rss-counter is back on 3.14-stable

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On Thu, Jun 05, 2014 at 01:37:42AM +0200, Andre Tomt wrote:
> On 04. juni 2014 20:27, Greg KH wrote:
> > Hi all,
> > 
> > Dave, I saw you mention that you were seeing the "Bad rss-counter" line
> > on 3.15-rc1, but I couldn't find any follow-up on this to see if anyone
> > figured it out, or did it just "magically" go away?
> > 
> > I ask as Brandon is seeing this same message a lot on a 3.14.4 kernel,
> > causing system crashes and problems:
> > 
> > [16591492.449718] BUG: Bad rss-counter state mm:ffff8801ced99880 idx:0 val:-1836508
> > [16591492.449737] BUG: Bad rss-counter state mm:ffff8801ced99880 idx:1 val:1836508
> > 
> > [20783350.461716] BUG: Bad rss-counter state mm:ffff8801d2b1dc00 idx:0 val:-52518
> > [20783350.461734] BUG: Bad rss-counter state mm:ffff8801d2b1dc00 idx:1 val:52518
> > 
> > [21393387.112302] BUG: Bad rss-counter state mm:ffff8801d0104e00 idx:0 val:-1767569
> > [21393387.112321] BUG: Bad rss-counter state mm:ffff8801d0104e00 idx:1 val:1767569
> > 
> > [21430098.512837] BUG: Bad rss-counter state mm:ffff880100036680 idx:0 val:-2946
> > [21430098.512854] BUG: Bad rss-counter state mm:ffff880100036680 idx:1 val:2946
> > 
> > Anyone have any ideas of a 3.15-rc patch I should be including in
> > 3.14-stable to resolve this?
> 
> I saw a bunch of similar errors on 3.14.x up to and including 3.14.4,
> running Java (Tomcat) and Postgres on Xen PV. Have not seen it since
> "mm: use paravirt friendly ops for NUMA hinting ptes" landed in 3.14.5.
> 
> 402e194dfc5b38d99f9c65b86e2666b29adebf8c in stable,
> 29c7787075c92ca8af353acd5301481e6f37082f upstream
> 
> As I did not follow the original discussion I have no idea if this is
> the same thing, and I'm way too lazy to look for it now. ;-)

Ah, nice find.

Brandon, I think 3.14.5 is in the CoreOs tree, can you update to that on
these boxes to see if it solves the issue?

thanks,

greg k-h

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