From: Matthew Wilcox <willy@infradead.org>
To: "Jürg Billeter" <j@bitron.ch>
Cc: Miklos Szeredi <miklos@szeredi.hu>,
linux-fsdevel@vger.kernel.org, regressions@lists.linux.dev
Subject: Re: [REGRESSION] fuse: copy_file_range() fails with EIO
Date: Sat, 10 Aug 2024 16:12:50 +0100 [thread overview]
Message-ID: <ZreDcghI8t_1iXzQ@casper.infradead.org> (raw)
In-Reply-To: <5b54cb7e5bfdd5439c3a431d4f86ad20c9b22e76.camel@bitron.ch>
On Sat, Aug 10, 2024 at 07:56:21AM +0200, Jürg Billeter wrote:
> Thanks for the quick response.
Thanks for the quick test!
> On Fri, 2024-08-09 at 17:03 +0100, Matthew Wilcox wrote:
> > Do you have CONFIG_DEBUG_VM enabled? There are some debugging asserts
> > which that will enable that might indicate a problem.
>
> With CONFIG_DEBUG_VM enabled, I get:
>
> page: refcount:2 mapcount:0 mapping:00000000b2c30835 index:0x0 pfn:0x12a113
> memcg:ffff9d8e3a660800
> aops:0xffffffff8a056820 ino:21 dentry name:"bash"
> flags: 0x24000000000022d(locked|referenced|uptodate|lru|workingset|node=0|zone=2)
> raw: 024000000000022d ffffd9ce04a827c8 ffffd9ce04a84508 ffff9d8e0bbc99f0
> raw: 0000000000000000 0000000000000000 00000002ffffffff ffff9d8e3a660800
> page dumped because: VM_BUG_ON_FOLIO(folio_test_uptodate(folio))
That's what I suspected was going wrong -- we're trying to end a read on
a folio that is already uptodate. Miklos, what the hell is FUSE doing
here?
next prev parent reply other threads:[~2024-08-10 15:12 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-08-09 15:53 [REGRESSION] fuse: copy_file_range() fails with EIO Jürg Billeter
2024-08-09 16:03 ` Matthew Wilcox
2024-08-09 16:22 ` [PATCH 1/3] fuse: remove call to SetPageError Matthew Wilcox (Oracle)
2024-08-09 16:22 ` [PATCH 2/3] fuse: Use a folio instead of a page Matthew Wilcox (Oracle)
2024-08-09 16:22 ` [PATCH 3/3] fuse: use folio_end_read Matthew Wilcox (Oracle)
2024-08-10 12:24 ` Jürg Billeter
2024-08-20 12:57 ` Jürg Billeter
2024-08-20 13:50 ` Matthew Wilcox
2024-08-22 11:58 ` Miklos Szeredi
2024-08-22 12:25 ` Matthew Wilcox
2024-08-10 5:56 ` [REGRESSION] fuse: copy_file_range() fails with EIO Jürg Billeter
2024-08-10 15:12 ` Matthew Wilcox [this message]
2024-08-22 13:04 ` Miklos Szeredi
2024-08-22 13:12 ` Jürg Billeter
2024-08-22 13:14 ` Miklos Szeredi
2024-08-22 13:32 ` Miklos Szeredi
2024-08-22 14:14 ` Jürg Billeter
2024-08-29 9:27 ` Marcel Ziswiler
2024-08-29 9:30 ` Miklos Szeredi
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