From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qc0-f174.google.com (mail-qc0-f174.google.com [209.85.216.174]) by kanga.kvack.org (Postfix) with ESMTP id 0CF7A6B0032 for ; Tue, 9 Dec 2014 04:02:24 -0500 (EST) Received: by mail-qc0-f174.google.com with SMTP id c9so80717qcz.19 for ; Tue, 09 Dec 2014 01:02:23 -0800 (PST) Received: from mail-qa0-x235.google.com (mail-qa0-x235.google.com. [2607:f8b0:400d:c00::235]) by mx.google.com with ESMTPS id f19si590287qgd.35.2014.12.09.01.02.22 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Tue, 09 Dec 2014 01:02:22 -0800 (PST) Received: by mail-qa0-f53.google.com with SMTP id bm13so75872qab.26 for ; Tue, 09 Dec 2014 01:02:22 -0800 (PST) MIME-Version: 1.0 In-Reply-To: <20141208130344.9dc58fda1862a4a4a14c7c6b@linux-foundation.org> References: <201412090206.Nd6JUQcF%fengguang.wu@intel.com> <20141208130344.9dc58fda1862a4a4a14c7c6b@linux-foundation.org> From: David Drysdale Date: Tue, 9 Dec 2014 09:02:02 +0000 Message-ID: Subject: Re: [next:master 10653/11539] arch/x86/ia32/audit.c:38:14: sparse: incompatible types for 'case' statement Content-Type: multipart/alternative; boundary=089e015375b411c46a0509c4cde2 Sender: owner-linux-mm@kvack.org List-ID: To: Andrew Morton Cc: kbuild test robot , kbuild-all@01.org, Linux Memory Management List --089e015375b411c46a0509c4cde2 Content-Type: text/plain; charset=UTF-8 On Mon, Dec 8, 2014 at 9:03 PM, Andrew Morton wrote: > On Tue, 9 Dec 2014 02:40:09 +0800 kbuild test robot < > fengguang.wu@intel.com> wrote: > > > tree: git:// > git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master > > head: cf12164be498180dc466ef97194ca7755ea39f3b > > commit: b4baa9e36be0651f7eb15077af5e0eff53b7691b [10653/11539] x86: hook > up execveat system call > > reproduce: > > # apt-get install sparse > > git checkout b4baa9e36be0651f7eb15077af5e0eff53b7691b > > make ARCH=x86_64 allmodconfig > > make C=1 CF=-D__CHECK_ENDIAN__ > > > > > > sparse warnings: (new ones prefixed by >>) > > > > arch/x86/ia32/audit.c:38:14: sparse: undefined identifier > '__NR_execveat' > > >> arch/x86/ia32/audit.c:38:14: sparse: incompatible types for 'case' > statement > > arch/x86/ia32/audit.c:38:14: sparse: Expected constant expression in > case statement > > arch/x86/ia32/audit.c: In function 'ia32_classify_syscall': > > arch/x86/ia32/audit.c:38:7: error: '__NR_execveat' undeclared (first > use in this function) > > case __NR_execveat: > > ^ > > arch/x86/ia32/audit.c:38:7: note: each undeclared identifier is > reported only once for each function it appears in > > -- > > Confused. This makes no sense and I can't reproduce it. > Ditto. Someone else did previously[1] have a build problem from a stale copy of arch/x86/include/generated/asm/unistd_32.h in their tree, but I don't know how that could happen. [1] https://lkml.org/lkml/2014/11/25/542 --089e015375b411c46a0509c4cde2 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
On M= on, Dec 8, 2014 at 9:03 PM, Andrew Morton <akpm@linux-foundation.o= rg> wrote:
On Tue, 9 Dec 2014 02:40= :09 +0800 kbuild test robot <fengguang.wu@intel.com> wrote:

> tree:=C2=A0 =C2=A0git://git.kernel.org/pub/scm/l= inux/kernel/git/next/linux-next.git master
> head:=C2=A0 =C2=A0cf12164be498180dc466ef97194ca7755ea39f3b
> commit: b4baa9e36be0651f7eb15077af5e0eff53b7691b [10653/11539] x86: ho= ok up execveat system call
> reproduce:
>=C2=A0 =C2=A0# apt-get install sparse
>=C2=A0 =C2=A0git checkout b4baa9e36be0651f7eb15077af5e0eff53b7691b
>=C2=A0 =C2=A0make ARCH=3Dx86_64 allmodconfig
>=C2=A0 =C2=A0make C=3D1 CF=3D-D__CHECK_ENDIAN__
>
>
> sparse warnings: (new ones prefixed by >>)
>
>=C2=A0 =C2=A0 arch/x86/ia32/audit.c:38:14: sparse: undefined identifier= '__NR_execveat'
> >> arch/x86/ia32/audit.c:38:14: sparse: incompatible types for &= #39;case' statement
>=C2=A0 =C2=A0 arch/x86/ia32/audit.c:38:14: sparse: Expected constant ex= pression in case statement
>=C2=A0 =C2=A0 arch/x86/ia32/audit.c: In function 'ia32_classify_sys= call':
>=C2=A0 =C2=A0 arch/x86/ia32/audit.c:38:7: error: '__NR_execveat'= ; undeclared (first use in this function)
>=C2=A0 =C2=A0 =C2=A0 case __NR_execveat:
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0^
>=C2=A0 =C2=A0 arch/x86/ia32/audit.c:38:7: note: each undeclared identif= ier is reported only once for each function it appears in
> --

Confused. This makes no sense and I can't reproduce it.

Ditto.

Someone else did p= reviously[1] have a build problem from a stale copy of
arch/x86/include/generated/asm/unistd_32.h in their tree, but I don&#= 39;t know
how that=C2=A0could happen.

[1]=C2=A0= https://lkml.org/lk= ml/2014/11/25/542
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