From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 184DF264A97; Tue, 20 May 2025 11:41:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.137.202.133 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747741317; cv=none; b=kYa16XSo5O7LKj3WyBmP3iHJ1OaBdV9mMXHgNcvP95d0MLJJ4MG++LVahh0qjSpfSJxa52wVPEuic8S0XvUJnjunjA1c19lfNbZim4PqJIfDGhVPEKzTBcDcxXlq+LgAlYeHzFbUmPRvhl1RxqzIoX0XSfA0f7gJA+qrYcaGKmI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747741317; c=relaxed/simple; bh=Ol9uSUbn2ZXUEH7qPHx1R0OZwskdpIKlJmZWMIzJyx4=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=g0De42pD7Bk3YwV8d+qxTi5hmXbfCferNarFTsmfsBoTxxSz5RGEs1Jbt64d2eg/f2349uQIy0wj0h9fJeb4yine38qKjnnHrq6FcMZyxTFPGcKwMqiSAWxuv79SqWKsPWgeCz7Ob9FgKdfYGAzsIOT/jntQPfdC6x8A5jm+u6Q= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org; spf=none smtp.mailfrom=bombadil.srs.infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=xlMulO2A; arc=none smtp.client-ip=198.137.202.133 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=bombadil.srs.infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="xlMulO2A" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=gmbzrUDxNH6PC6UchGiFgjmo8NW7xqmXvSTFLPxF/Cw=; b=xlMulO2AMDAuGzlA+wUXGreICR OMnwUw/rpLkCYmXF8UB3nAQsv+nXbwFlNYhir8BYinsR5VIrecbip+b6b9MzTTfiLZ0dq0adVezJt 3ulsNAFAGUt89V9tzMopwhCSkRgKmep6kC+y2F7znyRrdaVgGc0g9u0FcK51L0uMz3ixWLy7O7Bdx HNcONENmdg933DhQOIn7cnniPIwICXO70r5w02C6liIFPzkYg9tRBR5YMbLWZBDXtaFJsPsbPbTYp vagARtVbh7jByNCTNUfHIIXbQVZnFNkj4F8k38Qyl/TQEiU8em5h8TPEJL4jVd4wsFPWAcGb3M/+7 2Lxncu5w==; Received: from hch by bombadil.infradead.org with local (Exim 4.98.2 #2 (Red Hat Linux)) id 1uHLM0-0000000CghJ-0yKU; Tue, 20 May 2025 11:41:52 +0000 Date: Tue, 20 May 2025 04:41:52 -0700 From: "hch@infradead.org" To: "Xu, Lizhi" Cc: "hch@infradead.org" , Christian Hesse , "axboe@kernel.dk" , "christian@heusel.eu" , "linux-block@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "ming.lei@redhat.com" , "syzbot+6af973a3b8dfd2faefdc@syzkaller.appspotmail.com" , "syzkaller-bugs@googlegroups.com" Subject: Re: =?utf-8?B?5Zue5aSNOiDlm57lpI06IOWbng==?= =?utf-8?B?5aSNOg==?= [PATCH V5] loop: Add sanity check for read/write_iter Message-ID: References: <20250519175640.2fcac001@leda.eworm.net> <20250520030051.177205-1-lizhi.xu@windriver.com> <20250520073901.6fdfbee4@leda.eworm.net> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html On Tue, May 20, 2025 at 11:39:48AM +0000, Xu, Lizhi wrote: > No, isofs does not support read_iter. isofs does use generic_file_read_iter as read_iter method through generic_ro_fops. Why do you keep insisting on a wrong answer instead of simply checking what read* method is used by isofs?