Re: NFS serving off NTFS panic

[Matthew Dillon <dillon@xxxxxxxxxxxxxxxxxxxx>]

:How to reproduce:
:-Mount an NTFS partition (this was an XP-style NTFS)
:-Run an NFS server that exports it
:-It will crash a few seconds after nfsd is up; if not, try mounting it 
:from another machine
:
:Backtrace:
:
:#23 0xc03fa934 in Debugger (msg=0xc04687ad "panic") at machine/cpufunc.h:68
:#24 0xc026066b in panic (fmt=0xc0470a66 "assertion: vp == NULL in %s")
:    at /usr/src/sys/kern/kern_shutdown.c:618
:#25 0xc0293a3a in vop_compat_nresolve (ap=0xdecaf808)
:    at /usr/src/sys/kern/vfs_default.c:244
:#26 0xc02938c6 in vop_defaultop (ap=0xdecaf808)
:    at /usr/src/sys/kern/vfs_default.c:155
:#27 0xc02a04bc in vop_nresolve (ops=<incomplete type>, ncp=<incomplete 
:type>,
:    cred=0xdeb661cc) at /usr/src/sys/kern/vfs_vopops.c:1229
:#28 0xc029189b in cache_resolve (ncp=0xdeb9fc60, cred=0xdeb661cc)
:    at /usr/src/sys/kern/vfs_cache.c:1395
:...

    We have to figure out what filesystem this is from.  I looked at MSDOSFS
    but it looked ok.

    The easiest way is to print out the contents of 'dvp' in frame 25.

						-Matt