From: Dave Chinner <david@fromorbit.com>
To: Matthew Wilcox <willy@infradead.org>
Cc: linux-xfs@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [regression 6.14-rc2 + xfs-for-next] Bad page state at unmount
Date: Wed, 19 Feb 2025 16:39:02 +1100 [thread overview]
Message-ID: <Z7VudncQE3wC-I9i@dread.disaster.area> (raw)
In-Reply-To: <Z7VftAeqEgTwUyx_@casper.infradead.org>
On Wed, Feb 19, 2025 at 04:36:04AM +0000, Matthew Wilcox wrote:
> On Wed, Feb 19, 2025 at 02:50:13PM +1100, Dave Chinner wrote:
> > Hi folks,
> >
> > I hit this running check-parallel a moment ago:
FWIW, I just hit the bug again...
> > [80180.074658] BUG: Bad page cache in process umount pfn:7655f4
> > [80180.077259] page: refcount:9 mapcount:1 mapping:00000000ecd1b54a index:0x0 pfn:0x7655f4
> > [80180.080573] head: order:2 mapcount:4 entire_mapcount:0 nr_pages_mapped:4 pincount:0
> > [80180.083615] memcg:ffff888104f36000
> > [80180.084977] aops:xfs_address_space_operations ino:84
> > [80180.087175] flags: 0x17ffffc000016d(locked|referenced|uptodate|lru|active|head|node=0|zone=2|lastcpupid=0x1fffff)
> > [80180.091380] raw: 0017ffffc000016d ffffea001745c648 ffffea0012b1da08 ffff8891726dae98
> > [80180.094469] raw: 0000000000000000 0000000000000000 0000000900000000 ffff888104f36000
> > [80180.097740] head: 0017ffffc000016d ffffea001745c648 ffffea0012b1da08 ffff8891726dae98
> > [80180.100988] head: 0000000000000000 0000000000000000 0000000900000000 ffff888104f36000
> > [80180.104129] head: 0017ffffc0000202 ffffea001d957d01 ffffffff00000003 0000000000000004
> > [80180.107232] head: 0000000000000004 0000000000000000 0000000000000000 0000000000000000
> > [80180.110338] page dumped because: still mapped when deleted
>
> Do you have CONFIG_PT_RECLAIM enabled?
Never heard of it - what's that do, and how long before the fix
gets into the mainline tree?
> If so, it's buggy (see linux-mm
> for a fix if you don't want to disable it).
I'll disable it for now, don't feel like going on a fishing trip.
-Dave.
--
Dave Chinner
david@fromorbit.com
prev parent reply other threads:[~2025-02-19 5:39 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-19 3:50 Dave Chinner
2025-02-19 3:59 ` Darrick J. Wong
2025-02-19 4:36 ` Matthew Wilcox
2025-02-19 5:39 ` Dave Chinner [this message]
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