linux-kernel - Re: 回复: [PATCH V5] loop: Add sanity check for read/write

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Message-ID: <20250520083133.0683bdda@leda.eworm.net>
Date: Tue, 20 May 2025 08:31:33 +0200
From: Christian Hesse <mail@...rm.de>
To: "Xu, Lizhi" <Lizhi.Xu@...driver.com>
Cc: "axboe@...nel.dk" <axboe@...nel.dk>, "christian@...sel.eu"
 <christian@...sel.eu>, "hch@...radead.org" <hch@...radead.org>,
 "linux-block@...r.kernel.org" <linux-block@...r.kernel.org>,
 "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
 "ming.lei@...hat.com" <ming.lei@...hat.com>,
 "syzbot+6af973a3b8dfd2faefdc@...kaller.appspotmail.com"
 <syzbot+6af973a3b8dfd2faefdc@...kaller.appspotmail.com>,
 "syzkaller-bugs@...glegroups.com" <syzkaller-bugs@...glegroups.com>
Subject: Re: 回复: [PATCH V5] loop: Add sanity check for
 read/write_iter

"Xu, Lizhi" <Lizhi.Xu@...driver.com> on Tue, 2025/05/20 06:29:
> I figured out your steps to reproduce, and yes, this problem will occur if
> you do losetup with a file in a filesystem that does not support read_iter,
> which is what this patch does.

So is this expected behavior now?

It worked before... How to recover for our use case?
-- 
Best regards,
Chris

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