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

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Message-ID:
 <BL1PR11MB5979A3A409B5E6229609C480869FA@BL1PR11MB5979.namprd11.prod.outlook.com>
Date: Tue, 20 May 2025 11:52:34 +0000
From: "Xu, Lizhi" <Lizhi.Xu@...driver.com>
To: "hch@...radead.org" <hch@...radead.org>
CC: Christian Hesse <mail@...rm.de>, "axboe@...nel.dk" <axboe@...nel.dk>,
        "christian@...sel.eu" <christian@...sel.eu>,
        "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: [PATCH V5] loop: Add sanity check for read/write_iter

I added debugging code in loop_check_backing_file(), read_iter is NULL,
and I searched for read_iter in directly, so it says isofs does not support it.
I see isofs_read_inode is set in isofs_read_inode(), I will further investigate
why it is not set.