From owner-freebsd-net@freebsd.org Fri Jun 29 16:24:18 2018 Return-Path: Delivered-To: freebsd-net@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 47A10EFD6AA for ; Fri, 29 Jun 2018 16:24:18 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.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 CF61C71434 for ; Fri, 29 Jun 2018 16:24:17 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.ysv.freebsd.org (Postfix) id 8B65AEFD6A3; Fri, 29 Jun 2018 16:24:17 +0000 (UTC) Delivered-To: net@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 78ACEEFD6A2 for ; Fri, 29 Jun 2018 16:24:17 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.ysv.freebsd.org (mxrelay.ysv.freebsd.org [IPv6:2001:1900:2254:206a::19:3]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "mxrelay.ysv.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 1213971430 for ; Fri, 29 Jun 2018 16:24:17 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.ysv.freebsd.org (Postfix) with ESMTPS id 3E72C26087 for ; Fri, 29 Jun 2018 16:24:16 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id w5TGOGZs027461 for ; Fri, 29 Jun 2018 16:24:16 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id w5TGOGqg027458 for net@FreeBSD.org; Fri, 29 Jun 2018 16:24:16 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: net@FreeBSD.org Subject: [Bug 209682] [panic] [netinet] arptimer race Date: Fri, 29 Jun 2018 16:24:15 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: CURRENT X-Bugzilla-Keywords: crash, patch X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: daveb@spectralogic.com X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: net@FreeBSD.org X-Bugzilla-Flags: mfc-stable11? X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 29 Jun 2018 16:24:18 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D209682 --- Comment #12 from Dave Baukus --- Back in March, 2018, I added hselasky's patch to our 11.1 base. I and have = not seen this issues since. I did not add the patch to our 11.0 release; this b= ug reared its head in our 11.0 based release stream. I do know what triggers this event; I can not reproduce at will, but its se= ems that Hans Petter's patch is worthy. #6 0xffffffff8081908c in trap (frame=3D0xfffffe07c4ff37b0) at sys/amd64/amd64/trap.c:442 #7 0xffffffff807fd341 in calltrap () at sys/amd64/amd64/exception.S:236 #8 0xffffffff80625e64 in arptimer (arg=3D) at sys/netinet/if_ether.c:265 #9 0xffffffff8050dd0a in softclock_call_cc (c=3D, cc= =3D, direct=3D) Again the ifp from lle->lle_tbl->llt_ifp is invalid: p *$lle->lle_tbl $4 =3D { llt_link =3D { sle_next =3D 0x0 },=20 llt_af =3D 0,=20 llt_hsize =3D 0,=20 lle_head =3D 0xfffff800286a6000,=20 llt_ifp =3D 0x2,=20 llt_lookup =3D 0xc1,=20 llt_alloc_entry =3D 0,=20 llt_delete_entry =3D 0x9,=20 llt_prefix_free =3D 0xc0,=20 llt_dump_entry =3D 0x1667,=20 llt_hash =3D 0,=20 llt_match_prefix =3D 0x1d97,=20 llt_free_entry =3D 0x1a667b,=20 llt_foreach_entry =3D 0x1,=20 llt_link_entry =3D 0,=20 llt_unlink_entry =3D 0,=20 llt_fill_sa_entry =3D 0,=20 llt_free_tbl =3D 0 } --=20 You are receiving this mail because: You are the assignee for the bug.=