From owner-freebsd-net@freebsd.org Sat Feb 20 03:42:03 2016 Return-Path: Delivered-To: freebsd-net@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 CB348AAED9D for ; Sat, 20 Feb 2016 03:42:03 +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 mx1.freebsd.org (Postfix) with ESMTPS id A1F00115F for ; Sat, 20 Feb 2016 03:42:03 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from bugs.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id u1K3g22I000380 for ; Sat, 20 Feb 2016 03:42:03 GMT (envelope-from bugzilla-noreply@freebsd.org) From: bugzilla-noreply@freebsd.org To: freebsd-net@FreeBSD.org Subject: [Bug 196944] [bge] [ipmi] regression IPMI access disabled when bge driver is loaded Date: Sat, 20 Feb 2016 03:42:02 +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: 10.1-RELEASE X-Bugzilla-Keywords: regression X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: andrew.daugherity@gmail.com X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: freebsd-net@FreeBSD.org X-Bugzilla-Flags: 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: 2.1.20 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 20 Feb 2016 03:42:03 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D196944 --- Comment #2 from Andrew Daugherity --- I've found the commit that breaks it: base r241438 (which was MFC into stab= le/9 as 243546). Reading the commit history between 9.1 and 9.2, I saw that r24= 8226 (MFC onto 9-stable as r248858) claims to fix IPMI on a Sun X2200 that broke with 241838, so my first test was to see if it was working just before that. I built a 9.2 kernel with sys/dev/bge/if_bge.c rolled back to the commit be= fore the "bad" one, 243541 (MFC from 241436), and IPMI works! (I did not touch = any other files.) Also works for a stable/9 kernel (identified as 9.3-STABLE #1 r243541:295788) with if_bge.c at 243541. If I update if_bge.c to the commit in question (241438 aka 243546), IPMI is broken once more. I also tried r248858 (248226) which supposedly fixed IPM= I on those Sun servers but it did not help here. I have not tried any other commits, as it appears that for my hardware, it works on <=3D241436 and is = broken for >=3D241438. I also fixed my 10.2 kernel in the same way by rolling back if_bge.c to r241436. I had to merge r242426 and r242625 to get it to build; after doin= g so IPMI works in 10.2! Obviously rolling all the way back like this isn't the solution for everyon= e, as there have been many other commits since then, but at least I found the breakage point. I don't know the bge driver or kernel well enough to prope= rly fix it, but hopefully this is good information for someone who does. --=20 You are receiving this mail because: You are the assignee for the bug.=