From: David Howells <dhowells@redhat.com>
To: Matthew Wilcox <willy@infradead.org>
Cc: dhowells@redhat.com, Paulo Alcantara <pc@manguebit.org>,
netfs@lists.linux.dev
Subject: Re: Function to do end-writeback in bulk
Date: Mon, 24 Aug 2026 20:14:25 +0100 [thread overview]
Message-ID: <770270.1787598865@warthog.procyon.org.uk> (raw)
In-Reply-To: <aoxueo-kIy1Hkmc-@casper.infradead.org>
Matthew Wilcox <willy@infradead.org> wrote:
> Jan's more of an expert on the writeback path than I am, but once we've
> cleared the PG_writeback flag on the folio, there's nothing preventing
> us from removing the folio from the pagecache, right? So the inode could
> then be evicted, and then doing mapping->host would be a UAF.
netfs inode cleanup waits for all outstanding requests to complete, which
would include writeback.
David
next prev parent reply other threads:[~2026-08-24 19:14 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-24 15:09 Function to do end-writeback in bulk David Howells
2026-08-24 15:25 ` Matthew Wilcox
2026-08-24 15:47 ` David Howells
2026-08-24 16:16 ` Matthew Wilcox
2026-08-24 19:14 ` David Howells [this message]
2026-08-24 19:27 ` Matthew Wilcox
2026-09-01 7:17 ` David Howells
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