From owner-freebsd-stable@freebsd.org Thu Aug 11 23:42:52 2016 Return-Path: Delivered-To: freebsd-stable@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id CF79DBB6DFC for ; Thu, 11 Aug 2016 23:42:52 +0000 (UTC) (envelope-from david@catwhisker.org) Received: from mailman.ysv.freebsd.org (mailman.ysv.freebsd.org [IPv6:2001:1900:2254:206a::50:5]) by mx1.freebsd.org (Postfix) with ESMTP id B73351CB0 for ; Thu, 11 Aug 2016 23:42:52 +0000 (UTC) (envelope-from david@catwhisker.org) Received: by mailman.ysv.freebsd.org (Postfix) id B6007BB6DFB; Thu, 11 Aug 2016 23:42:52 +0000 (UTC) Delivered-To: stable@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id B352EBB6DFA for ; Thu, 11 Aug 2016 23:42:52 +0000 (UTC) (envelope-from david@catwhisker.org) Received: from albert.catwhisker.org (mx.catwhisker.org [198.144.209.73]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 6416E1CAF for ; Thu, 11 Aug 2016 23:42:51 +0000 (UTC) (envelope-from david@catwhisker.org) Received: from albert.catwhisker.org (localhost [127.0.0.1]) by albert.catwhisker.org (8.15.2/8.15.2) with ESMTP id u7BNgoMW035746; Thu, 11 Aug 2016 23:42:50 GMT (envelope-from david@albert.catwhisker.org) Received: (from david@localhost) by albert.catwhisker.org (8.15.2/8.15.2/Submit) id u7BNgoe2035745; Thu, 11 Aug 2016 16:42:50 -0700 (PDT) (envelope-from david) Date: Thu, 11 Aug 2016 16:42:50 -0700 From: David Wolfskill To: Adrian Chadd Cc: "stable@freebsd.org" Subject: Re: Panic in stable/11 (amd64) @r303903: page fault while in kernel mode Message-ID: <20160811234250.GC1112@albert.catwhisker.org> Mail-Followup-To: David Wolfskill , Adrian Chadd , "stable@freebsd.org" References: <20160810165458.GB1112@albert.catwhisker.org> <570bda1e-d4d7-42dc-6037-7c321ba9e97d@FreeBSD.org> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="Zxhbmr+fMFEUWeNp" Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.6.1 (2016-04-27) X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 11 Aug 2016 23:42:52 -0000 --Zxhbmr+fMFEUWeNp Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Aug 11, 2016 at 04:37:26PM -0700, Adrian Chadd wrote: > Eep. Is this anotehr case where there's a race and ifp is NULL or the > ll pointer for ifp is NULL or use-after-free'd? I don't know, but it's the only panic of a similar nature I've seen -- though since on any given day, I'm usually running FreeBSD freshly-built that morning, "trends" might be a little more difficult to determine. > I remember bumping into these here and there because we don't seem to > have a well defined lifecycle for lladdr access. ;( Well, you're quite welcome to grab the crash data & poke around, or tell me where to look, and I'll do so..... > ...=20 > >> Gory details (both "normal" and gzipped, and including the crash > >> dump and crashinfo) are in > >> . > ... Peace, david --=20 David H. Wolfskill david@catwhisker.org Those who would murder in the name of God or prophet are blasphemous coward= s. See http://www.catwhisker.org/~david/publickey.gpg for my public key. --Zxhbmr+fMFEUWeNp Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQF8BAEBCgBmBQJXrQ16XxSAAAAAAC4AKGlzc3Vlci1mcHJAbm90YXRpb25zLm9w ZW5wZ3AuZmlmdGhob3JzZW1hbi5uZXRDQ0I3Q0VGOTE3QTgwMUY0MzA2NEQ3N0Ix NTM5Q0M0MEEwNDlFRTE3AAoJEBU5zECgSe4X5bgH/R3/bvGQNM/2BLgyLqHQKSU6 wf5btokNWONl6AExEcSmtf7GB+Jxm3aw9xz6jxoOFGeo9OtBwlaE3TbHse1wvh6T kHoT07ie66Y+kh41SJv5fc/cS4lR2wQ53hIFh0VS9Vn2LT1IwpfQ3RaDJFuLCsCB J6oJhmwu6ksehOLIlR1lVdrm5cWDQleQac74+CwJcySNteSOHvPXvotqqnBlzUSK xD6k9ZHH6zhNf92P+Hm+7e60TjZ8c1AkCwhVGSlfkiJJMmg+L/gzRooyYbmmCLSR mLk6HLCcVQitMe2MiAGJ5ApOyy6N9t5Te91LD1+QtZC0RQd4i298KDOpKDdldg0= =y74H -----END PGP SIGNATURE----- --Zxhbmr+fMFEUWeNp--