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Fri, 19 Jun 2020 06:17:26 +0000 (UTC) Date: Fri, 19 Jun 2020 08:17:23 +0200 From: Cornelia Huck To: Aleksandar Markovic Subject: Re: [Bug 1883560] [NEW] mips linux-user builds occasionly crash randomly only to be fixed by a full clean re-build Message-ID: <20200619081723.10594336.cohuck@redhat.com> In-Reply-To: References: <159223432851.7281.13140123017230519248.malonedeb@gac.canonical.com> <20200618135331.7ec861e9.cohuck@redhat.com> Organization: Red Hat GmbH MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Received-SPF: pass client-ip=207.211.31.81; envelope-from=cohuck@redhat.com; helo=us-smtp-delivery-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/06/19 01:50:04 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -30 X-Spam_score: -3.1 X-Spam_bar: --- X-Spam_report: (-3.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Alex =?UTF-8?B?QmVubsOpZQ==?= <1883560@bugs.launchpad.net>, "qemu-devel@nongnu.org" , Laurent Vivier Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Thu, 18 Jun 2020 19:00:34 +0200 Aleksandar Markovic wrote: > =D1=87=D0=B5=D1=82=D0=B2=D1=80=D1=82=D0=B0=D0=BA, 18. =D1=98=D1=83=D0=BD = 2020., Cornelia Huck =D1=98=D0=B5 =D0=BD=D0=B0=D0=BF=D0= =B8=D1=81=D0=B0=D0=BE/=D0=BB=D0=B0: >=20 > > On Mon, 15 Jun 2020 15:18:48 -0000 > > Alex Benn=C3=A9e <1883560@bugs.launchpad.net> wrote: > > =20 > > > Public bug reported: > > > =20 > > > >From time to time I find check-tcg crashes with a one of the MIPS = =20 > > > binaries. The last time it crashed was running the test: > > > > > > ./mips64el-linux-user/qemu-mips64el ./tests/tcg/mips64el-linux- > > > user/threadcount > > > > > > Inevitably after some time noodling around wondering what could be > > > causing this weird behaviour I wonder if it is a build issue. I wipe = all > > > the mips* build directories, re-run configure and re-build and voila > > > problem goes away. > > > > > > It seems there must be some sort of build artefact which isn't being > > > properly re-generated on a build update which causes weird problems. > > > Additional data point if I: > > > > > > rm -rf mips64el-linux-user > > > ../../configure > > > make > > > > > > then I see failures in mip32 builds - eg: > > > > > > GEN mipsn32el-linux-user/config-target.h > > > In file included from /home/alex/lsrc/qemu.git/ =20 > > linux-user/syscall_defs.h:10, =20 > > > from /home/alex/lsrc/qemu.git/linux-user/qemu.h:16= , > > > from /home/alex/lsrc/qemu.git/ =20 > > linux-user/linuxload.c:5: =20 > > > /home/alex/lsrc/qemu.git/linux-user/mips64/syscall_nr.h:1: error: = =20 > > unterminated #ifndef =20 > > > #ifndef LINUX_USER_MIPS64_SYSCALL_NR_H > > > > > > make[1]: *** [/home/alex/lsrc/qemu.git/rules.mak:69: =20 > > linux-user/linuxload.o] Error 1 =20 > > > make[1]: *** Waiting for unfinished jobs.... > > > > > > which implies there is a cross dependency between different targets > > > somewhere. If I executed: > > > > > > rm -rf mips* > > > > > > before re-configuring and re-building then everything works again. > > > > > > ** Affects: qemu > > > Importance: Undecided > > > Status: New > > > > > > > > > ** Tags: build linux-user mips > > > =20 > > > > FWIW, this does not seem to be a mips-only issue: I'm seeing the > > threadcount test fail with s390x-linux-user as well, and it also goes > > away (only) if I purge the build directory, re-configure, and re-build. > > > > > > =20 > Alex, Cornelia, >=20 > Do you perhaps recall how did you obtain the original binaries (those wit= h > the problem)? What would be your typical workflow? Perhaps "git-pull + > make" on existing, but not latest source tree? Just a bog-standard "pull some stuff, do make, create a branch and put some patches on it, do make, switch to another branch, do make, etc". No advanced fiddling with git history, doing make on a subtree, etc.