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 E88DE29BD95; Mon, 19 Jan 2026 09:03:21 +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=1768813405; cv=none; b=s1u/cSXJVcsg8wdiKevLePIh3B3IkHvg2ccUoDC7S2j0Amtn7/NdY1PZ6XV7RFvfBuCehVUQcEg2WKT5iy9fZMp+TVVj56a41RbYryATeXGJe7ODeieBk8o1kWr0Ncw1CGQOieHrd/6wXDMm4c5K/OnFY+IhOa7C+uREgYmq8WA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768813405; c=relaxed/simple; bh=IOAdp2mvo3xJ64KuYq6nPuZwyvznxy49ypaVdGZETYs=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=Mz6GNzBoaiHQcKmjYKLBNdOWIN3a7z2NtwuMV4DI4WmbTz21W04LrDuEGqRkynvidxZHGOcQ0od5OmSq+XgTZUgIQc6TbuLGH0msa10p8w9vomdpxR+eLiy64qX+K94uUC8yb+L+Ayq0VbBp134lh4WM6ten8TdDp29nHZxufow= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (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=NlCbga6g; arc=none smtp.client-ip=198.137.202.133 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (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="NlCbga6g" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=In-Reply-To:Content-Transfer-Encoding :Content-Type:MIME-Version:References:Message-ID:Subject:Cc:To:From:Date: Sender:Reply-To:Content-ID:Content-Description; bh=VVF9Vwa2+xdjizaQLVvAuXkqoIAbS9mFpprw0iio9P8=; b=NlCbga6gKWsJh5pOcNpQ0oNZOy AXjMIrGo7IT6Epnb3nS/kaJnr5Db/bYTNV9xfpkJB/4rsSj6fkCzWO7dLtTxitngNd3QAeKCJrDkd zej/EyHbazj5LKUREibnBsfAxaIekA25id/UzNnpg5sVptQ4LWEz6GMGFU5o4XzqmZ+5S3kFCvrPa QrE2HXbkOZUbhQHeQRAi/IYJkaZvnpfR2GaIFKidkGgjwLYccWOgpAXMQIMoUKoTIcbnRIVs55uYB p4S7b9bH91/d7UtfDbLXE1kQNnVg8pRlLKgN5GSkO6Y6jiD70q7PwqWuBFfrxPh+BK5T2o1CAPGf2 orWUWBdA==; Received: from hch by bombadil.infradead.org with local (Exim 4.98.2 #2 (Red Hat Linux)) id 1vhlAO-00000001bDv-36GG; Mon, 19 Jan 2026 09:03:20 +0000 Date: Mon, 19 Jan 2026 01:03:20 -0800 From: Christoph Hellwig To: Aleksandr Nogikh Cc: Christoph Hellwig , syzbot , linux-kernel@vger.kernel.org, linux-xfs@vger.kernel.org, syzkaller-bugs@googlegroups.com, Dmitry Vyukov Subject: Re: [syzbot] [xfs?] KASAN: slab-use-after-free Read in xfs_buf_rele (4) Message-ID: References: <696dec7b.a70a0220.34546f.043a.GAE@google.com> 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=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html On Mon, Jan 19, 2026 at 09:53:18AM +0100, Aleksandr Nogikh wrote: > On Mon, Jan 19, 2026 at 9:37 AM Christoph Hellwig wrote: > > > > So I'm not sure what this test does that it always triggers the lockdep > > keys, but that makes it impossible to validate the original xfs report. > > > > Is there a way to force running syzbot reproducers without lockdep? > > Not directly, but you could explicitly modify lockdep's Kconfig in > your test patch to disable lockdep entirely. Already, I'll give it a try.