From: Matthew Wilcox <willy@infradead.org>
To: Qu Wenruo <quwenruo.btrfs@gmx.com>
Cc: Linux Memory Management List <linux-mm@kvack.org>,
linux-btrfs <linux-btrfs@vger.kernel.org>,
"fstests@vger.kernel.org" <fstests@vger.kernel.org>
Subject: Re: Btrfs crash on generic/437 on x86_64
Date: Mon, 10 Feb 2025 03:59:54 +0000 [thread overview]
Message-ID: <Z6l5uhuhAJ3Vepcq@casper.infradead.org> (raw)
In-Reply-To: <a33deb4e-3f6c-4a5e-9da9-ad403a858aca@gmx.com>
On Mon, Feb 10, 2025 at 02:13:53PM +1030, Qu Wenruo wrote:
> 在 2025/2/10 14:01, Matthew Wilcox 写道:
> > > [ 58.305921] BTRFS info (device dm-0): using free-space-tree
> > > [ 58.319296] run fstests generic/437 at 2025-02-10 13:24:19
> > > [ 59.283069] BUG: Bad rss-counter state mm:0000000048578720
> > > type:MM_FILEPAGES val:1
> > We need to figure out how we came to not unmap the page from the page
> > tables originally. Looking through the merge log of the mm tree, my
> > suspicion falls on the following patchsets:
> >
> > - "synchronously scan and reclaim empty user PTE pages" from Qi Zheng
> > addresses an issue where "huge" amounts of pte pagetables are
> > accumulated:
https://lore.kernel.org/linux-mm/2766D04E-5A04-4BF6-A2A3-5683A3054973@nvidia.com/
looks like a similar splat with the problem narrowed down to the reclaim
PTE pages patchset.
prev parent reply other threads:[~2025-02-10 3:59 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-10 3:10 Qu Wenruo
2025-02-10 3:31 ` Matthew Wilcox
2025-02-10 3:43 ` Qu Wenruo
2025-02-10 3:59 ` Matthew Wilcox [this message]
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