From owner-freebsd-net@freebsd.org Thu Nov 22 06:36:08 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 ABC89113B7C6 for ; Thu, 22 Nov 2018 06:36:08 +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 3B8FD8DCA1 for ; Thu, 22 Nov 2018 06:36:08 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.ysv.freebsd.org (Postfix) id F309D113B7C5; Thu, 22 Nov 2018 06:36:07 +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 E16CB113B7C4 for ; Thu, 22 Nov 2018 06:36:07 +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 TLSv1.3 with cipher TLS_AES_256_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 77D4D8DC9B for ; Thu, 22 Nov 2018 06:36:07 +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 AB3DB7A0D for ; Thu, 22 Nov 2018 06:36:06 +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 wAM6a62B018325 for ; Thu, 22 Nov 2018 06:36:06 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id wAM6a6f9018324 for net@FreeBSD.org; Thu, 22 Nov 2018 06:36:06 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 230498] Fatal trap 12: page fault while in kernel mode in sysctl_dumpentry from sysctl NET_RT_DUMP Date: Thu, 22 Nov 2018 06:36:06 +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: 11.2-STABLE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: ae@FreeBSD.org X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: net@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: attachments.isobsolete attachments.created 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-Rspamd-Queue-Id: 3B8FD8DCA1 X-Spamd-Result: default: False [0.66 / 15.00]; local_wl_from(0.00)[freebsd.org]; NEURAL_HAM_SHORT(-0.07)[-0.067,0]; NEURAL_SPAM_LONG(0.40)[0.397,0]; NEURAL_SPAM_MEDIUM(0.33)[0.327,0]; ASN(0.00)[asn:10310, ipnet:2001:1900:2254::/48, country:US] X-Rspamd-Server: mx1.freebsd.org X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 22 Nov 2018 06:36:09 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D230498 Andrey V. Elsukov changed: What |Removed |Added ---------------------------------------------------------------------------- Attachment #199372|0 |1 is obsolete| | --- Comment #15 from Andrey V. Elsukov --- Created attachment 199444 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D199444&action= =3Dedit Proposed patch (for stable/12+) Simplify the patch, remove the check for IFF_UP.=20 ifnet pointer should be safe to dereference while we in NET_EPOCH section. Also, since if_addr now kept unchanged, it is safe to dereference it too. --=20 You are receiving this mail because: You are the assignee for the bug.=