From owner-freebsd-bugs@freebsd.org Wed Aug 16 20:30:21 2017 Return-Path: Delivered-To: freebsd-bugs@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 A7058DCEE1B for ; Wed, 16 Aug 2017 20:30:21 +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 95BF46E6EB for ; Wed, 16 Aug 2017 20:30:21 +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 v7GKUL0n008540 for ; Wed, 16 Aug 2017 20:30:21 GMT (envelope-from bugzilla-noreply@freebsd.org) From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 221570] lock order reversal fs_mount.c:1271, msdosfs_vfsops.c:928 Date: Wed, 16 Aug 2017 20:30:21 +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: CURRENT X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: vidwer+fbsdbugs@gmail.com 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 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-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 16 Aug 2017 20:30:21 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D221570 Bug ID: 221570 Summary: lock order reversal fs_mount.c:1271, msdosfs_vfsops.c:928 Product: Base System Version: CURRENT Hardware: amd64 OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: freebsd-bugs@FreeBSD.org Reporter: vidwer+fbsdbugs@gmail.com Running 12.0-CURRENT, r322543 LOR: lock order reversal: 1st 0xfffff80042f839a0 zfs (zfs) @ /usr/src/sys/kern/vfs_mount.c:1271 2nd 0xfffff80042f745f0 devfs (devfs) @ /usr/src/sys/fs/msdosfs/msdosfs_vfsops.c:928 stack backtrace: #0 0xffffffff80ac3870 at witness_debugger+0x70 #1 0xffffffff80ac36f2 at witness_checkorder+0xe02 #2 0xffffffff80a3785e at lockmgr_lock_fast_path+0x1ae #3 0xffffffff81066610 at VOP_LOCK1_APV+0xe0 #4 0xffffffff80b3c3c6 at _vn_lock+0x66 #5 0xffffffff8093bcc0 at msdosfs_sync+0x1a0 #6 0xffffffff80b231fd at dounmount+0x5fd #7 0xffffffff80b22b7f at sys_unmount+0x30f #8 0xffffffff80eeb40b at amd64_syscall+0x79b #9 0xffffffff80ecabeb at Xfast_syscall+0xfb Attach, detach: da0 at umass-sim0 bus 0 scbus8 target 0 lun 0 da0: Removable Direct Access SPC-4 SCSI device da0: Serial Number 4C530001520818118305 da0: 40.000MB/s transfers da0: 7485MB (15330304 512 byte sectors) da0: quirks=3D0x2 ugen3.2: at usbus3 (disconnected) umass0: at uhub4, port 2, addr 2 (disconnected) da0 at umass-sim0 bus 0 scbus8 target 0 lun 0 da0: s/n 4C530001520818118305 detached (da0:umass-sim0:0:0:0): Periph destroyed umass0: detached The disk is formatted as: $ gpart show da0 =3D> 1 15330303 da0 MBR (7.3G) 1 31 - free - (16K) 32 15330272 1 fat32 (7.3G) --=20 You are receiving this mail because: You are the assignee for the bug.=