From nobody Mon Jun 28 09:44:24 2021 X-Original-To: bugs@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id BE49C11E51CF for ; Mon, 28 Jun 2021 09:44:24 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4GD2kc4Yv8z4gt9 for ; Mon, 28 Jun 2021 09:44:24 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 851232342A for ; Mon, 28 Jun 2021 09:44:24 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 15S9iOqR033475 for ; Mon, 28 Jun 2021 09:44:24 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 15S9iOip033474 for bugs@FreeBSD.org; Mon, 28 Jun 2021 09:44:24 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 256868] lock order reversal in vfs_mount when mounting ZFS based jail Date: Mon, 28 Jun 2021 09:44:24 +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 Some People X-Bugzilla-Who: pr@aoek.com X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: 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 List-Id: Bug reports List-Archive: https://lists.freebsd.org/archives/freebsd-bugs List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-bugs@freebsd.org MIME-Version: 1.0 X-ThisMailContainsUnwantedMimeParts: N https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D256868 Bug ID: 256868 Summary: lock order reversal in vfs_mount when mounting ZFS based jail Product: Base System Version: CURRENT Hardware: arm64 OS: Any Status: New Severity: Affects Some People Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: pr@aoek.com Hi, I can reproduce under aarch64 a bug that possibly has been around for quite some time and reported as amd64: please check #142878 #128633 or #210906 am= ong (possibly) others. lock order reversal: 1st 0xffffa00035320af0 zfs (zfs, lockmgr) @ /usr/src/sys/kern/vfs_mount.c:= 1108 2nd 0xffffa0201564ecb0 devfs (devfs, lockmgr) @ /usr/src/sys/kern/vfs_mount.c:1120 lock order devfs -> zfs established at: #0 0xffff0000004dd774 at witness_checkorder+0x438 #1 0xffff000000441b4c at lockmgr_xlock+0x50 #2 0xffff00000056a9d4 at _vn_lock+0x54 #3 0xffff00000054b440 at vfs_domount+0xd74 #4 0xffff000000549480 at vfs_donmount+0x2b8 #5 0xffff00000054def8 at kernel_mount+0x4c #6 0xffff000000550610 at parse_mount+0x49c #7 0xffff00000054eea8 at vfs_mountroot+0x6d4 #8 0xffff0000003fd668 at start_init+0x24 #9 0xffff00000042a344 at fork_exit+0x74 #10 0xffff00000076f7bc at fork_trampoline+0x14 lock order zfs -> devfs attempted at: #0 0xffff0000004ddf48 at witness_checkorder+0xc0c #1 0xffff000000441b4c at lockmgr_xlock+0x50 #2 0xffff00000056a9d4 at _vn_lock+0x54 #3 0xffff00000054b440 at vfs_domount+0xd74 #4 0xffff000000549480 at vfs_donmount+0x2b8 #5 0xffff000000549188 at sys_nmount+0x60 #6 0xffff000000770094 at do_el0_sync+0x4a0 #7 0xffff00000074fa1c at handle_el0_sync+0x90 This is running # uname -a FreeBSD asn 14.0-CURRENT FreeBSD 14.0-CURRENT #0 main-n247543-33e1287b6a54:= Mon Jun 28 10:31:58 CEST 2021=20=20=20=20 root@asn:/usr/obj/usr/src/arm64.aarch64/sys/GENERIC arm64 --=20 You are receiving this mail because: You are the assignee for the bug.=