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=-2.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_MUTT autolearn=unavailable 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 D6DDCC48BD4 for ; Tue, 25 Jun 2019 07:29:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B1DF42086D for ; Tue, 25 Jun 2019 07:29:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1561447787; bh=R4jNzRQw37JgF7x95aIa/iCUdU/hLNUV6njbwOGFUoM=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=wHlevZq00q01WVNQFk+P0yAVDtX+wpB9nXQaZQpgkjFXOIfjsXi03oissecRb61gC BTCm7Nw2Nwiz2nz5dJWvwU/S/fn3KyU36V3wxaDiEOAfVPpvYECKLQzKB0n+dUou2G lcrh4SdS4R8ZpC6ksM8ANIlXAVkqhoh2jlYgfvzc= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728309AbfFYH3p (ORCPT ); Tue, 25 Jun 2019 03:29:45 -0400 Received: from mail.kernel.org ([198.145.29.99]:57418 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727781AbfFYH3p (ORCPT ); Tue, 25 Jun 2019 03:29:45 -0400 Received: from sol.localdomain (c-24-5-143-220.hsd1.ca.comcast.net [24.5.143.220]) (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 5588A20652; Tue, 25 Jun 2019 07:29:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1561447784; bh=R4jNzRQw37JgF7x95aIa/iCUdU/hLNUV6njbwOGFUoM=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=MHYNPRO/hinfLrR7z1SR0mHpmHIrfaRWS31ESWqPRJaJ8Ehpq9EOUe2Bb5a00iCi0 9/N26lribFV1OcOLiKsUZJepFIlOjVDFsbK8cqLDnZW7f49yMOOPPc/hec7bkMx0sa UV3xp5worvMmtfKMzi1SJeJBIXvxvmJHzB2s2pzA= Date: Tue, 25 Jun 2019 00:29:42 -0700 From: Eric Biggers To: bpf@vger.kernel.org Cc: syzbot , LKML , syzkaller-bugs@googlegroups.com, Thomas Gleixner , Peter Zijlstra Subject: [net/bpf] Re: WARNING in mark_lock Message-ID: <20190625072942.GB30940@sol.localdomain> References: <0000000000005aedf1058c1bf7e8@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.12.1 (2019-06-15) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org [+bpf list] On Tue, Jun 25, 2019 at 08:20:56AM +0200, Thomas Gleixner wrote: > On Mon, 24 Jun 2019, syzbot wrote: > > > Hello, > > CC++ Peterz > > > > > syzbot found the following crash on: > > > > HEAD commit: dc636f5d Add linux-next specific files for 20190620 > > git tree: linux-next > > console output: https://syzkaller.appspot.com/x/log.txt?x=162b68b1a00000 > > kernel config: https://syzkaller.appspot.com/x/.config?x=99c104b0092a557b > > dashboard link: https://syzkaller.appspot.com/bug?extid=a861f52659ae2596492b > > compiler: gcc (GCC) 9.0.0 20181231 (experimental) > > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=110b24f6a00000 > > > > IMPORTANT: if you fix the bug, please add the following tag to the commit: > > Reported-by: syzbot+a861f52659ae2596492b@syzkaller.appspotmail.com The syz repro looks bpf related, and essentially the same repro is in lots of other open syzbot reports which I've assigned to the bpf subsystem... https://lore.kernel.org/lkml/20190624050114.GA30702@sol.localdomain/ {"threaded":true,"repeat":true,"procs":6,"sandbox":"none","fault_call":-1,"tun":true,"netdev":true,"resetnet":true,"cgroups":true,"binfmt_misc":true,"close_fds":true,"tmpdir":true,"segv":true} bpf$MAP_CREATE(0x0, &(0x7f0000000280)={0xf, 0x4, 0x4, 0x400, 0x0, 0x1}, 0x3c) socket$rxrpc(0x21, 0x2, 0x800000000a) r0 = socket$inet6_tcp(0xa, 0x1, 0x0) setsockopt$inet6_tcp_int(r0, 0x6, 0x13, &(0x7f00000000c0)=0x100000001, 0x1d4) connect$inet6(r0, &(0x7f0000000140), 0x1c) bpf$MAP_CREATE(0x0, &(0x7f0000000000)={0x5}, 0xfffffffffffffdcb) bpf$MAP_CREATE(0x2, &(0x7f0000003000)={0x3, 0x0, 0x77fffb, 0x0, 0x10020000000, 0x0}, 0x2c) setsockopt$inet6_tcp_TCP_ULP(r0, 0x6, 0x1f, &(0x7f0000000040)='tls\x00', 0x4)