From owner-freebsd-bugs@FreeBSD.ORG Wed Sep 3 13:15:20 2014 Return-Path: Delivered-To: freebsd-bugs@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id BEBA8CD6 for ; Wed, 3 Sep 2014 13:15:20 +0000 (UTC) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id A58C515CF for ; Wed, 3 Sep 2014 13:15:20 +0000 (UTC) Received: from bugs.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.14.9/8.14.9) with ESMTP id s83DFKOY028426 for ; Wed, 3 Sep 2014 13:15:20 GMT (envelope-from bugzilla-noreply@freebsd.org) From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 193269] panic: kdb_switch: did not reenter debugger (from sysctl debug.kdb.enter=1 w/ i915kms) Date: Wed, 03 Sep 2014 13:15:20 +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: 11.0-CURRENT X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: avg@FreeBSD.org X-Bugzilla-Status: Needs Triage X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: freebsd-bugs@FreeBSD.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cc Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 03 Sep 2014 13:15:20 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=193269 Andriy Gapon changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |avg@FreeBSD.org --- Comment #1 from Andriy Gapon --- kdb_trap context places certain requirements on code that can be executed. Apparently drm code (used via vt) is not aware of those requirements. The easiest solution is probably to amend pause_sbt() to take the 'cold' code path for kdb_active case as well. -- You are receiving this mail because: You are the assignee for the bug.