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 8E7B2271464; Mon, 2 Feb 2026 16:05:49 +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=1770048352; cv=none; b=px4T9pHGtqKUAx58Sz7cBr+OnbaZBOzAosRJy0Yl0OkU3mmn914XSBUvyddg3Y0wnoiIIFGWt01/g9tFYXsafOKVDMvjFr61UXqmXVpiJkqPZKNN8p5urRCOyUGI37eXYYTyukUgL28tZv+skUZuUNSFjf+U0Ko+KtpQE5e2Ims= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770048352; c=relaxed/simple; bh=ygzOtupooNTepvxoUWjaHEvjuLS7Q89q+udmj5bYQXg=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=VZQsI5o8M+R2beEQtrg5NtDHNmh3HZEaZq+B+DyVqbyV4b9DQDDgKKjlSGl1k0NK0hUd9rg0CAtzKWvxNQ8+Fju9acalyCXDvJRGuE1tFpUv0fcjOQIeszRphaPuM091bJbtTli3+OSWlmABo0O71xfYaqYn6HBqpLG+YatgMWE= 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=dFy8BgK8; 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="dFy8BgK8" 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=bqVSryV38mdCL0eVX/lowdw9tG4bE60oeMG1mMMKxPY=; b=dFy8BgK8EJvpphdClPg47j63Yu 3qPuBNa8PASiRQhuREzw8fKIsnYQ6NDaRBfSbC+l1xEuXaM0Rnzzk0gcXeNn8sEX1kOUg6oKpmpEc febuNWpBYJSkrkWZX4b/ZYIQH8cKzPGglWB+QWMkJ0jMeVtJZ78pD2mlOgYbD0MDEzFpmaLtc3KXr cAykU2aQpRMbk6+XO5rwrPNKa0zj1K4gPQRGaUsyzx0sSZigteEbHUqFfbDsrkaTadJ6ePwCfMUjM i2t9iomcJzsGjDLfxvK6PW/JpbpsgxxxvbuYRECzBbRlmS6G8BQ0fegX1zVbeVqIHvFERKl1krlX9 TWLKW8Jg==; Received: from hch by bombadil.infradead.org with local (Exim 4.98.2 #2 (Red Hat Linux)) id 1vmwQu-00000005GQr-1HCx; Mon, 02 Feb 2026 16:05:48 +0000 Date: Mon, 2 Feb 2026 08:05:48 -0800 From: Christoph Hellwig To: Matthew Wilcox Cc: Christoph Hellwig , Piyush Patle , brauner@kernel.org, djwong@kernel.org, linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, syzbot+bd5ca596a01d01bfa083@syzkaller.appspotmail.com Subject: Re: [PATCH] iomap: handle iterator position advancing beyond current mapping Message-ID: References: <20260202130044.567989-1-piyushpatle228@gmail.com> Precedence: bulk X-Mailing-List: linux-fsdevel@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 Mon, Feb 02, 2026 at 03:35:39PM +0000, Matthew Wilcox wrote: > On Mon, Feb 02, 2026 at 06:48:50AM -0800, Christoph Hellwig wrote: > > On Mon, Feb 02, 2026 at 06:30:44PM +0530, Piyush Patle wrote: > > > Closes: https://syzkaller.appspot.com/bug?id=bd5ca596a01d01bfa083 > > > > This link doesn't work. And the commit log has zero details of what's > > happening either. > > Looks like this one: > > https://syzkaller.appspot.com/bug?extid=bd5ca596a01d01bfa083 > > but there's no reproducer. Looks like it's through the blockdev rather > than a filesystem being involved. Let's wait for a reproducer. The fix looks incorrect for anything I could think of, so I'd rather fix a real bug. Given that lack of reproducer I'm also not confident that it fixes anything. The fact that the Fixes tag points to a merge commit doesn't really increase the trust I have in it either.