From owner-freebsd-current@freebsd.org Thu Oct 3 21:53:44 2019 Return-Path: Delivered-To: freebsd-current@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id EBE85141CD2 for ; Thu, 3 Oct 2019 21:53:44 +0000 (UTC) (envelope-from hps@selasky.org) Received: from mail.turbocat.net (turbocat.net [IPv6:2a01:4f8:c17:6c4b::2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 46kmwm1FBZz4myp for ; Thu, 3 Oct 2019 21:53:43 +0000 (UTC) (envelope-from hps@selasky.org) Received: from hps2016.home.selasky.org (unknown [62.141.129.235]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits)) (No client certificate requested) by mail.turbocat.net (Postfix) with ESMTPSA id 2D0832600F8; Thu, 3 Oct 2019 23:53:40 +0200 (CEST) Subject: Re: radeon panics kernels To: sgk@troutmask.apl.washington.edu Cc: freebsd-current@freebsd.org, Johannes Lundberg References: <20191002211946.GA1031@troutmask.apl.washington.edu> <20191003125920.GA4528@troutmask.apl.washington.edu> <20191003202643.GA61643@troutmask.apl.washington.edu> From: Hans Petter Selasky Message-ID: <5aa9c63c-98a2-b222-1b8b-64d33e47951b@selasky.org> Date: Thu, 3 Oct 2019 23:52:38 +0200 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:68.0) Gecko/20100101 Thunderbird/68.1.0 MIME-Version: 1.0 In-Reply-To: <20191003202643.GA61643@troutmask.apl.washington.edu> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 46kmwm1FBZz4myp X-Spamd-Bar: ---- Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=pass (mx1.freebsd.org: domain of hps@selasky.org designates 2a01:4f8:c17:6c4b::2 as permitted sender) smtp.mailfrom=hps@selasky.org X-Spamd-Result: default: False [-4.90 / 15.00]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[3]; R_SPF_ALLOW(-0.20)[+a:mail.turbocat.net:c]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; MIME_GOOD(-0.10)[text/plain]; DMARC_NA(0.00)[selasky.org]; TO_DN_SOME(0.00)[]; TO_MATCH_ENVRCPT_SOME(0.00)[]; IP_SCORE(-2.60)[ip: (-9.12), ipnet: 2a01:4f8::/29(-2.04), asn: 24940(-1.80), country: DE(-0.01)]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:24940, ipnet:2a01:4f8::/29, country:DE]; MID_RHS_MATCH_FROM(0.00)[]; RCVD_TLS_ALL(0.00)[]; RCVD_COUNT_TWO(0.00)[2] X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 03 Oct 2019 21:53:45 -0000 On 2019-10-03 22:26, Steve Kargl wrote: > On Thu, Oct 03, 2019 at 03:05:27PM +0200, Hans Petter Selasky wrote: >> >> If you leave the port debug knob for drm-current-kmod AS-IS, I think you >> can get away with: >> >> make DEBUG_FLAGS="-g" >> >> Then re-load the vmcore file in GDB/KGDB from ports (!) and add the >> symbol files for the modules loaded. Then get the backtrace using bt >> command. >> >> BTW: Did you try drm-devel-kmod for 13-current? >> > > Took a bit of trial and error. If I skip the panic > and trap frames (#0 through #8). I find the backtrace > that follows by sig. If I move to frame #11, I see > > (kgdb) frame 11 > #11 r100_mm_rreg_slow (rdev=0xfffff80135766a70, reg=) > at /usr/ports/graphics/drm-current-kmod/work/kms-drm-2d2852e/drivers/gpu/drm/radeon/r100.c:4114 > 4114 writel(reg, ((void __iomem *)rdev->rmmio) + RADEON_MM_INDEX); > (kgdb) p rdev->rmmio > $3 = (void *) 0x0 > > So, your guess of a NULL pointer seems correct. Can you do: set print pretty on print *rdev --HPS