From owner-freebsd-bugs@FreeBSD.ORG Fri Oct 12 08:20:01 2012 Return-Path: Delivered-To: freebsd-bugs@hub.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 14D80210D for ; Fri, 12 Oct 2012 08:20:01 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [8.8.178.135]) by mx1.freebsd.org (Postfix) with ESMTP id C6A6B8FC24 for ; Fri, 12 Oct 2012 08:20:00 +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 q9C8K0AP078681 for ; Fri, 12 Oct 2012 08:20:00 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.5/8.14.5/Submit) id q9C8K0lR078673; Fri, 12 Oct 2012 08:20:00 GMT (envelope-from gnats) Resent-Date: Fri, 12 Oct 2012 08:20:00 GMT Resent-Message-Id: <201210120820.q9C8K0lR078673@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, Robert Schulze Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id A1937D9F for ; Fri, 12 Oct 2012 08:18:05 +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 8B7D78FC19 for ; Fri, 12 Oct 2012 08:18:05 +0000 (UTC) Received: from red.freebsd.org (localhost [127.0.0.1]) by red.freebsd.org (8.14.5/8.14.5) with ESMTP id q9C8I5h5035282 for ; Fri, 12 Oct 2012 08:18:05 GMT (envelope-from nobody@red.freebsd.org) Received: (from nobody@localhost) by red.freebsd.org (8.14.5/8.14.5/Submit) id q9C8I54f035281; Fri, 12 Oct 2012 08:18:05 GMT (envelope-from nobody) Message-Id: <201210120818.q9C8I54f035281@red.freebsd.org> Date: Fri, 12 Oct 2012 08:18:05 GMT From: Robert Schulze To: freebsd-gnats-submit@FreeBSD.org X-Send-Pr-Version: www-3.1 Subject: kern/172630: LOR zfs/zfs_vfsops.c kern/kern_descrip.c X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 12 Oct 2012 08:20:01 -0000 >Number: 172630 >Category: kern >Synopsis: LOR zfs/zfs_vfsops.c kern/kern_descrip.c >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 Oct 12 08:20:00 UTC 2012 >Closed-Date: >Last-Modified: >Originator: Robert Schulze >Release: 8.3-STABLE >Organization: >Environment: FreeBSD hostname 8.3-STABLE FreeBSD 8.3-STABLE #19: Fri Sep 28 12:07:17 CEST 2012 root@hostname:/usr/obj/usr/src/sys/BAK amd64 >Description: Just want to report that LOR: kernel: lock order reversal: kernel: 1st 0xffffff00892dca58 zfs (zfs) @ /usr/src/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vfsops.c:1700 kernel: 2nd 0xffffffff809651c0 allproc (allproc) @ /usr/src/sys/kern/kern_descrip.c:2547 kernel: KDB: stack backtrace: kernel: #0 0xffffffff80476c96 at kdb_backtrace+0x66 kernel: #1 0xffffffff80485f95 at _witness_debugger+0x65 kernel: #2 0xffffffff80487024 at witness_checkorder+0x694 kernel: #3 0xffffffff8044f8fc at _sx_slock+0x4c kernel: #4 0xffffffff804156ce at mountcheckdirs+0x3e kernel: #5 0xffffffff804c926b at dounmount+0x41b kernel: #6 0xffffffff80eaac92 at zfs_unmount_snap+0xb2 kernel: #7 0xffffffff80eaadc5 at zfs_ioc_destroy_snaps_nvl+0xd5 kernel: #8 0xffffffff80eaaa96 at zfsdev_ioctl+0xe6 kernel: #9 0xffffffff803e584a at devfs_ioctl_f+0x7a kernel: #10 0xffffffff8048878e at kern_ioctl+0xfe kernel: #11 0xffffffff8048899f at ioctl+0xef kernel: #12 0xffffffff806711c9 at amd64_syscall+0x119 kernel: #13 0xffffffff8065abdc at Xfast_syscall+0xfc >How-To-Repeat: >Fix: >Release-Note: >Audit-Trail: >Unformatted: