Panic "rw lock not unlocked" doing NFS mount

[Kip Macy]

Please update to 186541 or later and try again.

Thanks,
Kip

On Sun, Dec 28, 2008 at 3:09 AM, Peter Jeremy
<peterjeremy at optushome.com.au> wrote:
> 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=Variable "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=0xffffffff80a20fe0) at /usr/src/sys/kern/kern_rwlock.c:180
> #11 0xffffffff80336636 in vfs_export (mp=0xffffff0001c6a000, argp=0xfffffffe96b10960) at /usr/src/sys/kern/vfs_export.c:247
> #12 0xffffffff8033de6f in vfs_donmount (td=0xffffff0001c8dab0, fsflags=0x11100, fsoptions=0xffffff0016c69700) at /usr/src/sys/kern/vfs_mount.c:998
> #13 0xffffffff8033eeec in nmount (td=0xffffff0001c8dab0, uap=0xfffffffe96b10c00) at /usr/src/sys/kern/vfs_mount.c:417
> #14 0xffffffff8044d12d in syscall (frame=0xfffffffe96b10c90) at /usr/src/sys/amd64/amd64/trap.c:898
> #15 0xffffffff8042fd4b in Xfast_syscall () at /usr/src/sys/amd64/amd64/exception.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.
>
> --
> 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.
>



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