From owner-freebsd-stable@FreeBSD.ORG Fri Sep 27 00:07:37 2013 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTP id 908B2D8B for ; Fri, 27 Sep 2013 00:07:37 +0000 (UTC) (envelope-from john.marshall@riverwillow.com.au) Received: from mail1.riverwillow.net.au (mail1.riverwillow.net.au [IPv6:2001:8000:1000:1801::36]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 1AD072389 for ; Fri, 27 Sep 2013 00:07:36 +0000 (UTC) Received: from rwpc15.gfn.riverwillow.net.au (rwpc15.gfn.riverwillow.net.au [IPv6:2001:8000:1000:18e1:20c:76ff:fe0a:2117]) (authenticated bits=56) by mail1.riverwillow.net.au (8.14.7/8.14.7) with ESMTP id r8R07SLG060700 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Fri, 27 Sep 2013 10:07:30 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=riverwillow.com.au; s=m1001; t=1380240450; bh=gJoqxvGKIDo5nnOKifT3F8OPBBgDzPjwTiy5l0ysqoU=; h=Date:From:To:Subject; b=pEYZyrDTb0dkyMZFR+Q7bmYuzy4w923NMV0oeOEQ40yspwR+beba7QxMhNHDBnWwt DLAEwclbk5Wf93AgHcmnQEZiqHTt3KPLUW7mSIYz3JbXFgIwbxDe8i0FUj9ehzZHDI uvzFemDBpwb0DSEvo56BjWISJbio9YVRm+F74iIw= Date: Fri, 27 Sep 2013 10:07:28 +1000 From: John Marshall To: freebsd-stable@freebsd.org Subject: 9.2-RC4 amd64 panic: vm_page_unwire Message-ID: <20130927000728.GB19167@rwpc15.gfn.riverwillow.net.au> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="4bRzO86E/ozDv8r1" Content-Disposition: inline OpenPGP: id=A29A84A2; url=http://pki.riverwillow.com.au/pgp/johnmarshall.asc User-Agent: Mutt/1.5.21 (2010-09-15) X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 27 Sep 2013 00:07:37 -0000 --4bRzO86E/ozDv8r1 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable I'm running 9.2-RC4 on a handful of desktop and server machines (both i386 and amd64). I have seen three panics (all vm_page_unwire) on one of those systems only (amd64 server) during the past week. The first two panics were triggered when shutting down the ntpd daemon (a recent development snapshot version of ntpd: 4.2.7p387). Exiting a later release (p388) has not triggered the panic. The system panicked again overnight, this time while acting as an sftp server receiving large (GB) files from another system. Fri Sep 20 16:48:34 2013 +1000 ozsrv04# kgdb kernel.debug /var/crash/vmcore.0 ... panic: vm_page_unwire: page 0xfffffe0233510578's wire count is zero cpuid =3D 3 KDB: stack backtrace: #0 0xffffffff80490268 at kdb_backtrace+0x68 #1 0xffffffff8045630a at panic+0x21a #2 0xffffffff8068bbc2 at vm_page_unwire+0x102 #3 0xffffffff80678702 at vm_fault_unwire+0xd2 #4 0xffffffff80680841 at vm_map_delete+0x171 #5 0xffffffff80680abf at vm_map_remove+0x5f #6 0xffffffff80683ee9 at vmspace_exit+0xc9 #7 0xffffffff8041f3ad at exit1+0x72d #8 0xffffffff804203ae at sys_sys_exit+0xe #9 0xffffffff806afd6f at amd64_syscall+0x3bf #10 0xffffffff8069a817 at Xfast_syscall+0xf7 Uptime: 2d0h35m3s =20 Fri Sep 20 17:49:57 2013 +1000 ozsrv04# kgdb kernel.debug /var/crash/vmcore.1 ... panic: vm_page_unwire: page 0xfffffe022f5fc238's wire count is zero cpuid =3D 2 KDB: stack backtrace: #0 0xffffffff80490268 at kdb_backtrace+0x68 #1 0xffffffff8045630a at panic+0x21a #2 0xffffffff8068bbc2 at vm_page_unwire+0x102 #3 0xffffffff80678702 at vm_fault_unwire+0xd2 #4 0xffffffff80680841 at vm_map_delete+0x171 #5 0xffffffff80680abf at vm_map_remove+0x5f #6 0xffffffff80683ee9 at vmspace_exit+0xc9 #7 0xffffffff8041f3ad at exit1+0x72d #8 0xffffffff804203ae at sys_sys_exit+0xe #9 0xffffffff806afd6f at amd64_syscall+0x3bf #10 0xffffffff8069a817 at Xfast_syscall+0xf7 Uptime: 59m51s Fri Sep 27 01:51:44 2013 +1000 ozsrv04# kgdb kernel.debug /var/crash/vmcore.2 ... panic: vm_page_unwire: page 0xfffffe0239ecfc48's wire count is zero cpuid =3D 5 KDB: stack backtrace: #0 0xffffffff80490268 at kdb_backtrace+0x68 #1 0xffffffff8045630a at panic+0x21a #2 0xffffffff8068bbc2 at vm_page_unwire+0x102 #3 0xffffffff804d857e at vfs_vmio_release+0x10e #4 0xffffffff804dadc8 at getnewbuf+0x468 #5 0xffffffff804dbb2f at getblk+0x5df #6 0xffffffff80632bb1 at ffs_balloc_ufs2+0x15c1 #7 0xffffffff8065a8d6 at ffs_write+0x246 #8 0xffffffff8070a18f at VOP_WRITE_APV+0x11f #9 0xffffffff80505e77 at vn_write+0x1f7 #10 0xffffffff80503b51 at vn_io_fault+0xb1 #11 0xffffffff804a387c at dofilewrite+0x9c #12 0xffffffff804a3b54 at kern_writev+0x54 #13 0xffffffff804a3bf5 at sys_write+0x65 #14 0xffffffff806afd6f at amd64_syscall+0x3bf #15 0xffffffff8069a817 at Xfast_syscall+0xf7 Uptime: 6d7h46m14s Is this a known problem? Should I file a PR? What additional information should I provide? I have made the core.txt.[0-2] files available in the following directory. The directory is not browsable. http://www.riverwillow.net.au/~john/92rc4/ --=20 John Marshall --4bRzO86E/ozDv8r1 Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.21 (FreeBSD) iEYEARECAAYFAlJEzEAACgkQw/tAaKKahKJ0xACcCsDNpkqlA7rqUfHq02VnMTOc fH8AnA+r2YRRrjbh3P6FO4e7BSeQT0VV =ZNJR -----END PGP SIGNATURE----- --4bRzO86E/ozDv8r1--