From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 13D09C10F27 for ; Tue, 10 Mar 2020 07:39:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DF7AC2467D for ; Tue, 10 Mar 2020 07:39:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1583825980; bh=pDcTo3jGlaRUg4AJeQ3STqNwHMX3K2wiybrw6YdVmYw=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=za1InArPCmi4LiA421WQys+Z7TQevq6b/hDKqO7zolJ6Mjd0un9LjVKip0VgR2oYl H+0mt7JutBvnXNXpZcjUeypl92Epch6bkuUXPWoJOMNeUM3ikUocfq3rahbJh9ZlCE HgWT6FBmmKLtV/V5VCPQzOz6n7xFRuh+mK5hwl7k= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726244AbgCJHjk (ORCPT ); Tue, 10 Mar 2020 03:39:40 -0400 Received: from mail.kernel.org ([198.145.29.99]:51788 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726205AbgCJHjk (ORCPT ); Tue, 10 Mar 2020 03:39:40 -0400 Received: from localhost (unknown [193.47.165.251]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 0106024677; Tue, 10 Mar 2020 07:39:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1583825979; bh=pDcTo3jGlaRUg4AJeQ3STqNwHMX3K2wiybrw6YdVmYw=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=O0pOXHhbimVqagJBxc5C9HtnA2BVus046mwHniCHutVE8XnmrnyBpBT8tLKiKGUXt 0/exUDO0wgX2Ws/1l83Yx38lMila0T5pOQs3iWG+pnS/eyuZEDvjUh6km7jv4+Mh8Z lOXPdrjX8w7TSX+onXP4dR2NNi85LikjxmX3Lq24= Date: Tue, 10 Mar 2020 09:39:36 +0200 From: Leon Romanovsky To: Jason Gunthorpe Cc: syzbot , dledford@redhat.com, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, monis@mellanox.com, syzkaller-bugs@googlegroups.com, yanjunz@mellanox.com Subject: Re: KASAN: use-after-free Read in rxe_query_port Message-ID: <20200310073936.GF172334@unreal> References: <0000000000000c9e12059fc941ff@google.com> <20200309173451.GA15143@mellanox.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200309173451.GA15143@mellanox.com> Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org On Mon, Mar 09, 2020 at 02:34:51PM -0300, Jason Gunthorpe wrote: > On Sun, Mar 01, 2020 at 03:20:12AM -0800, syzbot wrote: > > Hello, > > > > syzbot found the following crash on: > > > > HEAD commit: f8788d86 Linux 5.6-rc3 > > git tree: upstream > > console output: https://syzkaller.appspot.com/x/log.txt?x=132d3645e00000 > > kernel config: https://syzkaller.appspot.com/x/.config?x=9833e26bab355358 > > dashboard link: https://syzkaller.appspot.com/bug?extid=e11efb687f5ab7f01f3d > > compiler: gcc (GCC) 9.0.0 20181231 (experimental) > > > > Unfortunately, I don't have any reproducer for this crash yet. > > > > IMPORTANT: if you fix the bug, please add the following tag to the commit: > > Reported-by: syzbot+e11efb687f5ab7f01f3d@syzkaller.appspotmail.com > > Yanjun, do you have some idea what this could be? See this fix in the net mailing list. https://lore.kernel.org/netdev/20200306134518.84416-1-kgraul@linux.ibm.com Thanks > > Thanks, > Jason