Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755294Ab2JFJEK (ORCPT ); Sat, 6 Oct 2012 05:04:10 -0400 Received: from mga11.intel.com ([192.55.52.93]:25128 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755145Ab2JFJEG (ORCPT ); Sat, 6 Oct 2012 05:04:06 -0400 Message-Id: <275ffc$6skdfn@fmsmga002.fm.intel.com> X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.80,543,1344236400"; d="scan'208";a="231355895" From: Chris Wilson Subject: Re: 3.5 regression on i915 To: Willy Tarreau Cc: Dave Airlie , Daniel Vetter , linux-kernel@vger.kernel.org In-Reply-To: <20121006084258.GB22618@1wt.eu> References: <20121005234218.GC21163@1wt.eu> <20121005235845.GE21163@1wt.eu> <20121006072704.GA22465@1wt.eu> <20121006075956.GF21163@1wt.eu> <051c15$4i14fm@AZSMGA002.ch.intel.com> <20121006084258.GB22618@1wt.eu> Date: Sat, 06 Oct 2012 10:04:00 +0100 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1294 Lines: 39 On Sat, 6 Oct 2012 10:42:58 +0200, Willy Tarreau wrote: > On Sat, Oct 06, 2012 at 09:24:35AM +0100, Chris Wilson wrote: > > More likely X is segfaulting for another reason altogether. Can you > > please attach the stacktrace (with symbols!) and see if another > > bisection is required? > > Yes, here it is. > > (EE) intel(0): Failed to initialize kernel memory manager > > Backtrace: > 0: X(xf86SigHandler+0x7e) [0x80d8b5e] > 1: [0xffffe400] > 2: /usr/lib/xorg/modules/drivers//intel_drv.so(i830_allocator_init+0x332) [0xb73756e2] Drat, that is: commit 7bb6fb8dd958ae773ac205282e3c0b56c22e01ed Author: Daniel Vetter Date: Tue Apr 24 08:22:52 2012 +0200 drm/i915: disallow gem ums init ioctl for kms This ioctl used in a kms driver is only useful to create massive havoc. Can't see just why -intel crashes, but I presume it is during the i830_free_memory along that path. Anyway, looks like that patch needs to be reverted. -Chris -- Chris Wilson, Intel Open Source Technology Centre -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/