From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dario Faggioli Subject: Re: Xen-4.3 and -unstable regression from changeset "numa-sched: leave node-affinity alone if not in 'auto' mode" Date: Thu, 28 Nov 2013 14:05:21 +0100 Message-ID: <1385643921.20797.144.camel@Abyss> References: <529737AD.7070708@citrix.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============4833390851858675900==" Return-path: In-Reply-To: <529737AD.7070708@citrix.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Andrew Cooper Cc: George Dunlap , Jan Beulich , Xen-devel List List-Id: xen-devel@lists.xenproject.org --===============4833390851858675900== Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="=-pwUq1QvwAnNp9qpiLhLQ" --=-pwUq1QvwAnNp9qpiLhLQ Content-Type: multipart/mixed; boundary="=-5Ys8xECRFcvLGCIi9998" --=-5Ys8xECRFcvLGCIi9998 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On gio, 2013-11-28 at 12:31 +0000, Andrew Cooper wrote: > Hello, >=20 Hi, > I have recently positivly identified > b54a623efbcf5bff25c55117add1b4427b4e2f1b as causing a boot failure. >=20 > Serial log is attached. The crash is completely deterministic, and is > from an IBM xSeries 3530 M4 server. >=20 > Given the crash and bad patch, I suspect it is more to do with the > NUMA/memory layout than the specifics of the server. >=20 > Dario: Being your patch, do you have any ideas? >=20 Wow... Not out of the top of my head... Can you try (or tell me how to do that on that box) the attached debug patch? I know it's gross, but given where and how early the crash happens, it shouldn't be too bad, and it would hopefully at least tell if d->node_affinity contains garbage. Dario --=20 <> (Raistlin Majere) ----------------------------------------------------------------- Dario Faggioli, Ph.D, http://about.me/dario.faggioli Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK) --=-5Ys8xECRFcvLGCIi9998 Content-Disposition: attachment; filename="node_affinity.patch" Content-Transfer-Encoding: base64 Content-Type: text/x-patch; name="node_affinity.patch"; charset="UTF-8" ZGlmZiAtLWdpdCBhL3hlbi9jb21tb24vZG9tYWluLmMgYi94ZW4vY29tbW9uL2RvbWFpbi5jDQpp bmRleCAyY2JjNDg5Li4wNmIwOTlmIDEwMDY0NA0KLS0tIGEveGVuL2NvbW1vbi9kb21haW4uYw0K KysrIGIveGVuL2NvbW1vbi9kb21haW4uYw0KQEAgLTM0OCw2ICszNDgsMTMgQEAgc3RydWN0IGRv bWFpbiAqZG9tYWluX2NyZWF0ZSgNCiAgICAgcmV0dXJuIEVSUl9QVFIoZXJyKTsNCiB9DQogDQor c3RhdGljIHZvaWQgbm9kZXNldF9wcmludChjaGFyICpzZXQsIGludCBzaXplLCBjb25zdCBub2Rl bWFza190ICptYXNrKSANCit7IA0KKyAgICAqc2V0KysgPSAnWyc7IA0KKyAgICBzZXQgKz0gbm9k ZWxpc3Rfc2NucHJpbnRmKHNldCwgc2l6ZS0yLCBtYXNrKTsgDQorICAgICpzZXQrKyA9ICddJzsg DQorICAgICpzZXQrKyA9ICdcMCc7IA0KK30NCiANCiB2b2lkIGRvbWFpbl91cGRhdGVfbm9kZV9h ZmZpbml0eShzdHJ1Y3QgZG9tYWluICpkKQ0KIHsNCkBAIC0zNTcsNiArMzY0LDggQEAgdm9pZCBk b21haW5fdXBkYXRlX25vZGVfYWZmaW5pdHkoc3RydWN0IGRvbWFpbiAqZCkNCiAgICAgc3RydWN0 IHZjcHUgKnY7DQogICAgIHVuc2lnbmVkIGludCBub2RlOw0KIA0KKyAgICBjaGFyIHRtcHN0clsy NTZdOw0KKw0KICAgICBpZiAoICF6YWxsb2NfY3B1bWFza192YXIoJmNwdW1hc2spICkNCiAgICAg ICAgIHJldHVybjsNCiAgICAgaWYgKCAhYWxsb2NfY3B1bWFza192YXIoJm9ubGluZV9hZmZpbml0 eSkgKQ0KQEAgLTM5NCw2ICs0MDMsOSBAQCB2b2lkIGRvbWFpbl91cGRhdGVfbm9kZV9hZmZpbml0 eShzdHJ1Y3QgZG9tYWluICpkKQ0KIA0KICAgICBzcGluX3VubG9jaygmZC0+bm9kZV9hZmZpbml0 eV9sb2NrKTsNCiANCisgICAgbm9kZXNldF9wcmludCh0bXBzdHIsIHNpemVvZih0bXBzdHIpLCAm ZC0+bm9kZV9hZmZpbml0eSk7DQorICAgIHByaW50aygiLS1WQ1BVOiAlZCwgZC0+bm9kZV9hZmZp bml0eTogJXNcbiIsIHYtPnZjcHVfaWQsIHRtcHN0cik7DQorDQogICAgIGZyZWVfY3B1bWFza192 YXIob25saW5lX2FmZmluaXR5KTsNCiAgICAgZnJlZV9jcHVtYXNrX3ZhcihjcHVtYXNrKTsNCiB9 DQo= --=-5Ys8xECRFcvLGCIi9998-- --=-pwUq1QvwAnNp9qpiLhLQ Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.15 (GNU/Linux) iEYEABECAAYFAlKXP5EACgkQk4XaBE3IOsQQFwCdEuxycsBqIsPoBHMonTJT01+N FMQAn0budGR0/Kz552cy6v0pqJRqBJoI =O8Wa -----END PGP SIGNATURE----- --=-pwUq1QvwAnNp9qpiLhLQ-- --===============4833390851858675900== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel --===============4833390851858675900==--