From owner-freebsd-bugs@FreeBSD.ORG Mon Feb 9 01:10:03 2009 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 CFA5B1065673 for ; Mon, 9 Feb 2009 01:10:03 +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 A3C878FC19 for ; Mon, 9 Feb 2009 01:10:03 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (gnats@localhost [127.0.0.1]) by freefall.freebsd.org (8.14.3/8.14.3) with ESMTP id n191A31q016631 for ; Mon, 9 Feb 2009 01:10:03 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.3/8.14.3/Submit) id n191A35Z016630; Mon, 9 Feb 2009 01:10:03 GMT (envelope-from gnats) Date: Mon, 9 Feb 2009 01:10:03 GMT Message-Id: <200902090110.n191A35Z016630@freefall.freebsd.org> To: freebsd-bugs@FreeBSD.org From: linimon@lonesome.com (Mark Linimon) Cc: Subject: Re: kern/131290: [hang]: How to completely freeze FreeBSD 7.1 under a non-privileged user X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: Mark Linimon List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 09 Feb 2009 01:10:04 -0000 The following reply was made to PR kern/131290; it has been noted by GNATS. From: linimon@lonesome.com (Mark Linimon) To: bug-followup@FreeBSD.org Cc: Subject: Re: kern/131290: [hang]: How to completely freeze FreeBSD 7.1 under a non-privileged user Date: Sun, 8 Feb 2009 19:09:31 -0600 ----- Forwarded message from Mikolaj Golub ----- Some more data from the debugger session: (kgdb) frame 12 #12 0xc07d4b3b in doselwakeup (sip=0xc4f0c1f0, pri=88) at /usr/src/sys/kern/sys_generic.c:1138 1138 TAILQ_REMOVE(&td->td_selq, sip, si_thrlist); (kgdb) p *sip $2 = {si_thrlist = {tqe_next = 0xc5137d50, tqe_prev = 0xc4682ce0}, si_thread = 0xc4682cc0, si_note = { kl_list = {slh_first = 0x0}, kl_lock = 0xc0770070 , kl_unlock = 0xc07700a0 , kl_locked = 0xc0773640 , kl_lockarg = 0xc4f0c2fc}, si_flags = 0} (kgdb) p *sip->si_thrlist.tqe_next $6 = {si_thrlist = {tqe_next = 0x0, tqe_prev = 0x0}, si_thread = 0x0, si_note = {kl_list = { slh_first = 0x0}, kl_lock = 0xc0770070 , kl_unlock = 0xc07700a0 , kl_locked = 0xc0773640 , kl_lockarg = 0xc5137d74}, si_flags = 0} (kgdb) p **sip->si_thrlist.tqe_prev $12 = {si_thrlist = {tqe_next = 0xc5137d50, tqe_prev = 0xc4682ce0}, si_thread = 0xc4682cc0, si_note = { kl_list = {slh_first = 0x0}, kl_lock = 0xc0770070 , kl_unlock = 0xc07700a0 , kl_locked = 0xc0773640 , kl_lockarg = 0xc4f0c2fc}, si_flags = 0} Also, I tried FreeBSD 8.0-CURRENT kernel (with 7STABLE userland). When I run /usr/local/etc/rc.d/ejabberd stop it panics too with the same message. Architecture: i386 Architecture Version: 1 Dump Length: 187904B (0 MB) Blocksize: 512 Dumptime: Sun Feb 8 23:47:58 2009 Hostname: zhuzha.ua1 Magic: FreeBSD Text Dump Version String: FreeBSD 8.0-CURRENT #0 r188297: Sun Feb 8 22:39:36 EET 2009 root@zhuzha.ua1:/home/golub/freebsd/build/obj/home/golub/freebsd/src/sys/DEBUG Panic String: Bad link elm 0xc5005a80 prev->next != elm Dump Parity: 1084020072 Bounds: 2 Dump Status: good -- Mikolaj Golub ----- End forwarded message -----