From owner-freebsd-bugs@FreeBSD.ORG Fri Apr 13 21:40:07 2012 Return-Path: Delivered-To: freebsd-bugs@hub.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 60A5E106564A for ; Fri, 13 Apr 2012 21:40:07 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:4f8:fff6::28]) by mx1.freebsd.org (Postfix) with ESMTP id 215858FC1E for ; Fri, 13 Apr 2012 21:40:07 +0000 (UTC) Received: from freefall.freebsd.org (localhost [127.0.0.1]) by freefall.freebsd.org (8.14.5/8.14.5) with ESMTP id q3DLe7Qg066386 for ; Fri, 13 Apr 2012 21:40:07 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.5/8.14.5/Submit) id q3DLe6C9066380; Fri, 13 Apr 2012 21:40:06 GMT (envelope-from gnats) Resent-Date: Fri, 13 Apr 2012 21:40:06 GMT Resent-Message-Id: <201204132140.q3DLe6C9066380@freefall.freebsd.org> Resent-From: FreeBSD-gnats-submit@FreeBSD.org (GNATS Filer) Resent-To: freebsd-bugs@FreeBSD.org Resent-Reply-To: FreeBSD-gnats-submit@FreeBSD.org, Ryan Stone Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 33698106566C for ; Fri, 13 Apr 2012 21:35:05 +0000 (UTC) (envelope-from nobody@FreeBSD.org) Received: from red.freebsd.org (red.freebsd.org [IPv6:2001:4f8:fff6::22]) by mx1.freebsd.org (Postfix) with ESMTP id 1EE7D8FC0A for ; Fri, 13 Apr 2012 21:35:05 +0000 (UTC) Received: from red.freebsd.org (localhost [127.0.0.1]) by red.freebsd.org (8.14.4/8.14.4) with ESMTP id q3DLZ4fj077426 for ; Fri, 13 Apr 2012 21:35:04 GMT (envelope-from nobody@red.freebsd.org) Received: (from nobody@localhost) by red.freebsd.org (8.14.4/8.14.4/Submit) id q3DLZ4Yw077425; Fri, 13 Apr 2012 21:35:04 GMT (envelope-from nobody) Message-Id: <201204132135.q3DLZ4Yw077425@red.freebsd.org> Date: Fri, 13 Apr 2012 21:35:04 GMT From: Ryan Stone To: freebsd-gnats-submit@FreeBSD.org X-Send-Pr-Version: www-3.1 Cc: Subject: kern/166923: dtrace: kernel trap 12 with interrupts disabled (not a panic!?) X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 13 Apr 2012 21:40:07 -0000 >Number: 166923 >Category: kern >Synopsis: dtrace: kernel trap 12 with interrupts disabled (not a panic!?) >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Fri Apr 13 21:40:06 UTC 2012 >Closed-Date: >Last-Modified: >Originator: Ryan Stone >Release: 8-STABLE >Organization: >Environment: >Description: I activated the following probes in a proprietary userland application: dtrace -p 45412 -n 'pid$target:foo::entry { ustack();}' The following got spammed to the console: kernel trap 12 with interrupts disabled kernel trap 12 with interrupts disabled kernel trap 12 with interrupts disabled kernel trap 12 with interrupts disabled kernel trap 12 with interrupts disabled kernel trap 12 with interrupts disabled kernel trap 12 with interrupts disabled kernel trap 12 with interrupts disabled kernel trap 12 with interrupts disabled kernel trap 12 with interrupts disabled kernel trap 12 with interrupts disabled kernel trap 12 with interrupts disabled Incredibly, the kernel did not panic. When I stopped dtrace the messages stopped and everything continued normally... >How-To-Repeat: >Fix: >Release-Note: >Audit-Trail: >Unformatted: