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

[Andre Tomt]

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. ;-)
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