linux-kernel - Re: kernel BUG at mm/swap

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Date:   Thu, 30 May 2019 00:28:05 +0500
From:   Mikhail Gavrilov <mikhail.v.gavrilov@...il.com>
To:     Michal Hocko <mhocko@...nel.org>
Cc:     Linux List Kernel Mailing <linux-kernel@...r.kernel.org>,
        linux-mm@...ck.org
Subject: Re: kernel BUG at mm/swap_state.c:170!

On Wed, 29 May 2019 at 23:09, Michal Hocko <mhocko@...nel.org> wrote:
>
> On Wed 29-05-19 22:32:08, Mikhail Gavrilov wrote:
> > On Wed, 29 May 2019 at 09:05, Mikhail Gavrilov
> > <mikhail.v.gavrilov@...il.com> wrote:
> > >
> > > Hi folks.
> > > I am observed kernel panic after update to git tag 5.2-rc2.
> > > This crash happens at memory pressing when swap being used.
> > >
> > > Unfortunately in journalctl saved only this:
> > >
> >
> > Now I captured better trace.
> >
> > : page:ffffd6d34dff0000 refcount:1 mapcount:1 mapping:ffff97812323a689
> > index:0xfecec363
> > : anon
> > : flags: 0x17fffe00080034(uptodate|lru|active|swapbacked)
> > : raw: 0017fffe00080034 ffffd6d34c67c508 ffffd6d3504b8d48 ffff97812323a689
> > : raw: 00000000fecec363 0000000000000000 0000000100000000 ffff978433ace000
> > : page dumped because: VM_BUG_ON_PAGE(entry != page)
> > : page->mem_cgroup:ffff978433ace000
> > : ------------[ cut here ]------------
> > : kernel BUG at mm/swap_state.c:170!
>
> Do you see the same with 5.2-rc1 resp. 5.1?

On 5.2-rc1 I has another another issue
https://www.spinics.net/lists/linux-ext4/msg65661.html


--
Best Regards,
Mike Gavrilov.