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Date: Tue, 30 Jun 2026 13:10:11 -0700
From: Andrew Morton <akpm@linux-foundation.org>
To: Longxing Li <coregee2000@gmail.com>
Cc: syzkaller@googlegroups.com, willy@infradead.org,
 linux-fsdevel@vger.kernel.org, linux-mm@kvack.org,
 linux-kernel@vger.kernel.org
Subject: Re: [Kernel Bug] KASAN: slab-use-after-free Read in
 filemap_free_folio
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On Tue, 30 Jun 2026 23:24:58 +0800 Longxing Li <coregee2000@gmail.com> wrote:

> Dear maintainers,
> 
> I'm trying to fix this issue.

Great, thanks.

> The bug analysis and patch fix are as follows.
> ========================================================
> Bug Summary
> 
> ext4_add_complete_io() queues i_rsv_conversion_work without holding an
> extra inode reference. If the inode is unlinked & evicted before the
> delayed work runs, ext4_do_flush_completed_IO() accesses a freed inode —
> use-after-free.

You omitted the ext4 developers!

	scripts/get_maintainer.pl -f --no-rolestats fs/ext4

is a good way to find them.

Also, your email client is converting tabs to spaces.


So please fix those things up and resend?