Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756105AbaFQK4d (ORCPT ); Tue, 17 Jun 2014 06:56:33 -0400 Received: from mx1.redhat.com ([209.132.183.28]:56698 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754695AbaFQK4c (ORCPT ); Tue, 17 Jun 2014 06:56:32 -0400 Message-ID: <53A01ECA.6090504@redhat.com> Date: Tue, 17 Jun 2014 12:56:10 +0200 From: Daniel Borkmann User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/17.0 Thunderbird/17.0 MIME-Version: 1.0 To: Guenter Roeck CC: "linux-kernel@vger.kernel.org" , Linux MIPS Mailing List , Ralf Baechle , Alexei Starovoitov , Markos Chandras Subject: Re: mips:allmodconfig build failure in 3.16-rc1 due to bpf_jit code References: <539FA6CB.5050703@roeck-us.net> <539FFA6B.9030004@redhat.com> <53A01572.5090603@redhat.com> <53A01AED.4010008@roeck-us.net> In-Reply-To: <53A01AED.4010008@roeck-us.net> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 06/17/2014 12:39 PM, Guenter Roeck wrote: > On 06/17/2014 03:16 AM, Daniel Borkmann wrote: >> On 06/17/2014 10:20 AM, Daniel Borkmann wrote: >>> On 06/17/2014 04:24 AM, Guenter Roeck wrote: >>>> mips:allmodconfig fails in 3.16-rc1 with lots of undefined symbols. >>>> >>>> arch/mips/net/bpf_jit.c: In function 'is_load_to_a': >>>> arch/mips/net/bpf_jit.c:559:7: error: 'BPF_S_LD_W_LEN' undeclared (first use in this function) >>>> arch/mips/net/bpf_jit.c:559:7: note: each undeclared identifier is reported only once for each function it appears in >>>> arch/mips/net/bpf_jit.c:560:7: error: 'BPF_S_LD_W_ABS' undeclared (first use in this function) >>>> arch/mips/net/bpf_jit.c:561:7: error: 'BPF_S_LD_H_ABS' undeclared (first use in this function) >>>> arch/mips/net/bpf_jit.c:562:7: error: 'BPF_S_LD_B_ABS' undeclared (first use in this function) >>>> arch/mips/net/bpf_jit.c:563:7: error: 'BPF_S_ANC_CPU' undeclared (first use in this function) >>>> arch/mips/net/bpf_jit.c:564:7: error: 'BPF_S_ANC_IFINDEX' undeclared (first use in this function) >>>> arch/mips/net/bpf_jit.c:565:7: error: 'BPF_S_ANC_MARK' undeclared (first use in this function) >>>> >>>> and so on. >>>> >>>> Those symbols are not defined anywhere. >>>> >>>> The problem is due to a conflict with commit 348059313 (net: filter: get rid of BPF_S_* >>>> enum), which removed those definitions. >>> >>> Yep, it seems both got in this merge window from different trees. Don't have mips, but >>> I'll have a look, and send you a patch. >> >> Could you give the attached patch a try? > > Yes, this fixes the build problem. Obviously I have no idea if it works ;-) Thanks Guenter! We have a test suite for BPF under lib/test_bpf.c that was designed for the interpreter and for BPF JIT developers in mind and pretty much covers most cases. E.g. one possibility to run it would be: 0) compile module test_bpf (Kernel Hacking -> Test BPF filter functionality) 1) echo 1 > /proc/sys/net/core/bpf_jit_enable [<- enables BPF JIT] 2) modprobe test_bpf [<- runs test suite] The results will be visible in the klog via dmesg (if at least one test fails, the module init handler will return an error). Best, Daniel -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/