From owner-freebsd-bugs@FreeBSD.ORG Wed Sep 3 00:56:09 2014 Return-Path: Delivered-To: freebsd-bugs@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 41A41E3C for ; Wed, 3 Sep 2014 00:56:09 +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 290301D53 for ; Wed, 3 Sep 2014 00:56:09 +0000 (UTC) Received: from bugs.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.14.9/8.14.9) with ESMTP id s830u9gN003477 for ; Wed, 3 Sep 2014 00:56:09 GMT (envelope-from bugzilla-noreply@freebsd.org) From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 193269] New: panic: kdb_switch: did not reenter debugger (from sysctl debug.kdb.enter=1 w/ i915kms) Date: Wed, 03 Sep 2014 00:56:09 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new 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: emaste@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: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter Message-ID: 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 00:56:09 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=193269 Bug ID: 193269 Summary: panic: kdb_switch: did not reenter debugger (from sysctl debug.kdb.enter=1 w/ i915kms) Product: Base System Version: 11.0-CURRENT Hardware: Any OS: Any Status: Needs Triage Severity: Affects Some People Priority: --- Component: kern Assignee: freebsd-bugs@FreeBSD.org Reporter: emaste@freebsd.org X11 w/ i915, "sysctl debug.kdb.enter=1" from an xterm results in the following panic: #3 0xffffffff8090dc43 in panic (fmt=0x0) at /tank/emaste/src/freebsd/sys/kern/kern_shutdown.c:675 #4 0xffffffff80916ed4 in mi_switch (flags=, newtd=) at /tank/emaste/src/freebsd/sys/kern/kern_synch.c:424 #5 0xffffffff80953262 in sleepq_switch (wchan=, pri=) at /tank/emaste/src/freebsd/sys/kern/subr_sleepqueue.c:552 #6 0xffffffff809537c3 in sleepq_timedwait (wchan=0xffffffff815bdc82, pri=0) at /tank/emaste/src/freebsd/sys/kern/subr_sleepqueue.c:666 #7 0xffffffff8091670a in _sleep (ident=, lock=, priority=, wmesg=, sbt=, pr=) at /tank/emaste/src/freebsd/sys/kern/kern_synch.c:251 #8 0xffffffff80916be4 in pause_sbt (wmesg=0xffffffff8205e826 "915vbl", sbt=, pr=0, flags=256) at /tank/emaste/src/freebsd/sys/kern/kern_synch.c:380 #9 0xffffffff8202d0d8 in intel_wait_for_vblank (dev=, pipe=) at /tank/emaste/src/freebsd/sys/modules/drm2/i915kms/../../../dev/drm2/i915/ intel_display.c:736 #10 0xffffffff82035459 in intel_pipe_set_base (crtc=0xfffff80012ef8800, x=0, y=0, old_fb=0xfffff800141bcd80) at /tank/emaste/src/freebsd/sys/modules/drm2/i915kms/../../../dev/drm2/i915/ intel_display.c:2340 #11 0xffffffff8207e960 in drm_crtc_helper_set_config (set=0xfffff8025603e208) at /tank/emaste/src/freebsd/sys/modules/drm2/drm2/../../../dev/drm2/drm_crtc _helper.c:746 #12 0xffffffff82085b7c in vt_kms_postswitch (arg=) at /tank/emaste/src/freebsd/sys/modules/drm2/drm2/../../../dev/drm2/drm_fb_h elper.c:396 #13 0xffffffff807bae53 in vt_window_switch (vw=0xffffffff81467cb8) at /tank/emaste/src/freebsd/sys/dev/vt/vt_core.c:387 #14 0xffffffff807b9123 in vtterm_cngrab (tm=) at /tank/emaste/src/freebsd/sys/dev/vt/vt_core.c:1238 #15 0xffffffff808c15c5 in cngrab () at /tank/emaste/src/freebsd/sys/kern/kern_cons.c:360 #16 0xffffffff809468d3 in kdb_trap (type=3, code=0, tf=) at /tank/emaste/src/freebsd/sys/kern/subr_kdb.c:651 #17 0xffffffff80d23c02 in trap (frame=0xfffffe046320e6e0) at /tank/emaste/src/freebsd/sys/amd64/amd64/trap.c:542 #18 0xffffffff80d059e2 in calltrap () at /tank/emaste/src/freebsd/sys/amd64/amd64/exception.S:231 #19 0xffffffff80946b71 in kdb_sysctl_enter (oidp=, arg1=, arg2=-2180180285808, req=) at cpufunc.h:63 #20 0xffffffff80919828 in sysctl_root_handler_locked (oid=0xffffffff8148bf80, arg1=0x0, arg2=0, req=0xfffffe046320e868) at /tank/emaste/src/freebsd/sys/kern/kern_sysctl.c:153 -- You are receiving this mail because: You are the assignee for the bug.