Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > linux.kernel > #1299525
| From | Stephen Rothwell <sfr@canb.auug.org.au> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: BUG: Bad rss-counter state mm:ffff8800c5a96000 idx:3 val:3894 |
| Date | 2015-12-30 23:40 +0100 |
| Message-ID | <qLxzs-48X-5@gated-at.bofh.it> (permalink) |
| References | <qJhIt-167-3@gated-at.bofh.it> <qL5jP-2Vk-1@gated-at.bofh.it> <qL7lE-49U-25@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
Hi Andrew,
On Tue, 29 Dec 2015 10:30:37 -0800 Andrew Morton <akpm@linux-foundation.org> wrote:
>
> On Tue, 29 Dec 2015 17:23:47 +0100 Michal Hocko <mhocko@kernel.org> wrote:
>
> > [CCing Andrew]
> >
> > On Thu 24-12-15 09:12:53, Jeremiah Mahler wrote:
> > > all,
> > >
> > > I have started seeing a "Bad rss-counter" message in the logs with
> > > the latest linux-next 20151222+.
> > >
> > > [ 458.282192] BUG: Bad rss-counter state mm:ffff8800c5a96000 idx:3 val:3894
> >
> > This is MM_SHMEMPAGES so an "unamapped" shmem memory. One possible
> > reason might be an unitialized zap_details used from unmap_mapping_range
> > during truncate introduced by "mm, oom: introduce oom reaper" from the
> > mmotm tree. There is a fix for this which is still pending
> > http://lkml.kernel.org/r/1450487091-7822-1-git-send-email-sasha.levin%40oracle.com
>
> That won't be getting fixed until linux-next returns from holidays.
>
> This:
>
> --- a/mm/memory.c~mm-oom-introduce-oom-reaper-fix-5-fix
> +++ a/mm/memory.c
> @@ -2415,7 +2415,7 @@ static inline void unmap_mapping_range_t
> void unmap_mapping_range(struct address_space *mapping,
> loff_t const holebegin, loff_t const holelen, int even_cows)
> {
> - struct zap_details details;
> + struct zap_details details = { };
> pgoff_t hba = holebegin >> PAGE_SHIFT;
> pgoff_t hlen = (holelen + PAGE_SIZE - 1) >> PAGE_SHIFT;
>
OK, I have added the following from mmots to linux-next today (though I
may not get a release done):
mm-oom-introduce-oom-reaper-fix-4-fix.patch
mm-oom-introduce-oom-reaper-fix-4.patch
mm-oom-introduce-oom-reaper-fix-5-fix.patch
mm-oom-introduce-oom-reaper-fix-5.patch
mm-oom-introduce-oom-reaper-fix-6.patch
mmoom-exclude-tif_memdie-processes-from-candidates.patch
--
Cheers,
Stephen Rothwell sfr@canb.auug.org.au
--
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/
Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
BUG: Bad rss-counter state mm:ffff8800c5a96000 idx:3 val:3894 Jeremiah Mahler <jmmahler@gmail.com> - 2015-12-24 18:20 +0100
Re: BUG: Bad rss-counter state mm:ffff8800c5a96000 idx:3 val:3894 Michal Hocko <mhocko@kernel.org> - 2015-12-29 17:30 +0100
Re: BUG: Bad rss-counter state mm:ffff8800c5a96000 idx:3 val:3894 Andrew Morton <akpm@linux-foundation.org> - 2015-12-29 19:40 +0100
Re: BUG: Bad rss-counter state mm:ffff8800c5a96000 idx:3 val:3894 Jeremiah Mahler <jmmahler@gmail.com> - 2015-12-29 20:00 +0100
Re: BUG: Bad rss-counter state mm:ffff8800c5a96000 idx:3 val:3894 Stephen Rothwell <sfr@canb.auug.org.au> - 2015-12-30 23:40 +0100
Re: BUG: Bad rss-counter state mm:ffff8800c5a96000 idx:3 val:3894 Andrew Morton <akpm@linux-foundation.org> - 2016-01-04 22:30 +0100
Re: BUG: Bad rss-counter state mm:ffff8800c5a96000 idx:3 val:3894 "Kirill A. Shutemov" <kirill@shutemov.name> - 2016-01-04 23:50 +0100
Re: BUG: Bad rss-counter state mm:ffff8800c5a96000 idx:3 val:3894 Jeremiah Mahler <jmmahler@gmail.com> - 2016-01-05 02:50 +0100
csiph-web