From owner-freebsd-amd64@freebsd.org Fri Jul 8 04:50:04 2016 Return-Path: Delivered-To: freebsd-amd64@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id E3708B84684 for ; Fri, 8 Jul 2016 04:50:04 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id D368D1B05 for ; Fri, 8 Jul 2016 04:50:04 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from bugs.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id u684o459022952 for ; Fri, 8 Jul 2016 04:50:04 GMT (envelope-from bugzilla-noreply@freebsd.org) From: bugzilla-noreply@freebsd.org To: freebsd-amd64@FreeBSD.org Subject: [Bug 210906] [lor] lock order reversal in vfs_mount/vfs_subr under ZFS Date: Fri, 08 Jul 2016 04:50:04 +0000 X-Bugzilla-Reason: CC 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 Only Me X-Bugzilla-Who: freebsd@otoh.org X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: freebsd-bugs@FreeBSD.org 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 cc Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-Mailman-Approved-At: Fri, 08 Jul 2016 10:52:08 +0000 X-BeenThere: freebsd-amd64@freebsd.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: Porting FreeBSD to the AMD64 platform List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 08 Jul 2016 04:50:05 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D210906 Bug ID: 210906 Summary: [lor] lock order reversal in vfs_mount/vfs_subr under ZFS Product: Base System Version: 11.0-CURRENT Hardware: amd64 OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: freebsd-bugs@FreeBSD.org Reporter: freebsd@otoh.org CC: freebsd-amd64@FreeBSD.org CC: freebsd-amd64@FreeBSD.org lock order reversal: 1st 0xfffff80004da07c8 zfs (zfs) @ /usr/src/sys/kern/vfs_mount.c:848 2nd 0xfffff8000f8535f0 devfs (devfs) @ /usr/src/sys/kern/vfs_subr.c:2523 stack backtrace: #0 0xffffffff80aae180 at witness_debugger+0x70 #1 0xffffffff80aae074 at witness_checkorder+0xe54 #2 0xffffffff80a26dc2 at __lockmgr_args+0x4c2 #3 0xffffffff80afeebc at vop_stdlock+0x3c #4 0xffffffff810738ea at VOP_LOCK1_APV+0xda #5 0xffffffff80b1fc2a at _vn_lock+0x9a #6 0xffffffff80b10123 at vget+0x63 #7 0xffffffff8092122d at devfs_allocv+0xcd #8 0xffffffff80920d33 at devfs_root+0x43 #9 0xffffffff80b0746e at vfs_donmount+0x144e #10 0xffffffff80b05ff2 at sys_nmount+0x72 #11 0xffffffff80f16b2b at amd64_syscall+0x2db #12 0xffffffff80ef68cb at Xfast_syscall+0xfb Noticed when stopping a ZFS mounted jail. 11.0 Alpha 6 --=20 You are receiving this mail because: You are on the CC list for the bug.=