From owner-freebsd-fs@freebsd.org Sun Jul 10 17:10:59 2016 Return-Path: Delivered-To: freebsd-fs@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 15FA6B84EC5 for ; Sun, 10 Jul 2016 17:10:59 +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 05C821D40 for ; Sun, 10 Jul 2016 17:10:59 +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 u6AHAvht025579 for ; Sun, 10 Jul 2016 17:10:58 GMT (envelope-from bugzilla-noreply@freebsd.org) From: bugzilla-noreply@freebsd.org To: freebsd-fs@FreeBSD.org Subject: [Bug 203864] ZFS deadlock between zfs send, zfs rename and ctrl-C Date: Sun, 10 Jul 2016 17:10:58 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: CURRENT X-Bugzilla-Keywords: dogfood, needs-qa X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: avg@FreeBSD.org X-Bugzilla-Status: Open X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: freebsd-fs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: 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-fs@freebsd.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 10 Jul 2016 17:10:59 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D203864 --- Comment #18 from Andriy Gapon --- And another deadlock of the same nature, but with an even more obvious LOR: 5087 100846 zfs - mi_switch+0x167 sleepq_switch+0xe7 sleepq_wait+0x43 _cv_wait+0x1e4 rrw_enter_read_impl+0x9b dsl_pool_hold+0x77 dmu_objset_own+0x31 zvol_create_minor+0x16f zvol_create_minors+0x9d zfs_ioc_create+0x3df zfsdev_ioctl+0x65c devfs_ioctl_f+0x156 kern_ioctl+0x246 sys_ioctl+0x171 amd64_syscall+0x2db Xfast_syscall+0xfb =20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20= =20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20= =20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20= =20=20=20=20 6 100572 zfskern=20=20=20=20=20=20=20= =20=20 txg_thread_enter mi_switch+0x167 sleepq_switch+0xe7 sleepq_wait+0x43 _sx_xlock_hard+0x49d _sx_xlock+0xc5 zvol_rename_minors+0x104 dsl_dir_rename_sync+0x406 dsl_sync_task_sync+0xef dsl_pool_sync+0x45b spa_sync+0x7c7 txg_sync_thread+0x383 fork_exit+0x84 fork_trampoline+0xe Thread 100846 took spa_namespace_lock in zvol_create_minor() and wants to g= et dp_config_rwlock (as a reader) in dsl_pool_hold(). Thread 100572 took as dp_config_rwlock (as a writer) in dsl_sync_task_sync() and wants to take spa_namespace_lock in zvol_rename_minors(). --=20 You are receiving this mail because: You are the assignee for the bug.=