Date: Sun, 28 Dec 2008 22:09:23 +1100 From: Peter Jeremy <peterjeremy@optushome.com.au> To: freebsd-current@freebsd.org Subject: Panic "rw lock not unlocked" doing NFS mount Message-ID: <20081228110923.GD64280@server.vk2pj.dyndns.org>
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--3Gf/FFewwPeBMqCJ Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable I'm running -current from just before Christmas and when I tried to NFS mount a ZFS filesystem, the server panic'd. Backtrace is: #9 0xffffffff802be55b in panic (fmt=3DVariable "fmt" is not available.) at= /usr/src/sys/kern/kern_shutdown.c:559 During symbol reading, unsupported tag: 'DW_TAG_volatile_type'. #10 0xffffffff802bc8f1 in rw_destroy (rw=3D0xffffffff80a20fe0) at /usr/src/= sys/kern/kern_rwlock.c:180 #11 0xffffffff80336636 in vfs_export (mp=3D0xffffff0001c6a000, argp=3D0xfff= ffffe96b10960) at /usr/src/sys/kern/vfs_export.c:247 #12 0xffffffff8033de6f in vfs_donmount (td=3D0xffffff0001c8dab0, fsflags=3D= 0x11100, fsoptions=3D0xffffff0016c69700) at /usr/src/sys/kern/vfs_mount.c:9= 98 #13 0xffffffff8033eeec in nmount (td=3D0xffffff0001c8dab0, uap=3D0xfffffffe= 96b10c00) at /usr/src/sys/kern/vfs_mount.c:417 #14 0xffffffff8044d12d in syscall (frame=3D0xfffffffe96b10c90) at /usr/src/= sys/amd64/amd64/trap.c:898 #15 0xffffffff8042fd4b in Xfast_syscall () at /usr/src/sys/amd64/amd64/exce= ption.S:338 I'm not sure why nmount(2) is being invoked on the NFS server. Also, the path passed into nmount() is not the path I was mounting (though it is a path I tried unsuccessfully to mount yesterday). Has anyone got any suggestions? Just before I sent this, I tried the mount again and got EPERM on the client. Since I'd been renaming ZFS mountpoints, I assumed that mountd had gotten itself confused. When I SIGHUP'd it, I got another identical panic. --=20 Peter Jeremy Please excuse any delays as the result of my ISP's inability to implement an MTA that is either RFC2821-compliant or matches their claimed behaviour. --3Gf/FFewwPeBMqCJ Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.9 (FreeBSD) iEYEARECAAYFAklXXmMACgkQ/opHv/APuIeG6QCeOoWNC5/o1jrlfjYjGemRcI1I slgAmgNfBrDa5ahQXII2fssXuhKwQAOf =MyIL -----END PGP SIGNATURE----- --3Gf/FFewwPeBMqCJ--
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