mountd segfaults in NFSv4 if -alldirs is present in exports
George Mamalakis
mamalos at eng.auth.gr
Fri Feb 19 15:51:47 UTC 2010
On 19/02/2010 17:44, George Mamalakis wrote:
> Hi all,
>
> the title explains it all...
>
> But ok, let's be a bit more extensive.
>
> If I have one line in /etc/exports reading:
>
> V4: / -alldirs
>
> and try to start mountd, it segfaults with signal 11. From the manpage
> I read that -alldirs is the "second method" used to export a
> filesystem and V4 is the "third", maybe implying that they are
> mutually exclusive. Nevertheless, I suppose that mountd shouldn't
> segfault in my case, it could just refuse to start giving an error
> message or something. I've tried a different /etc/exports containing a
> dummy option -dummy instead of -alldirs and mountd won't segfault,
> hence there's no problem with its parser.
>
oops,
forgotten system info:
# uname -a
FreeBSD lala 8.0-STABLE FreeBSD 8.0-STABLE #0: Fri Feb 19 11:45:56 EET
2010 root at lala:/usr/obj/usr/src/sys/MAMALOPYRINO-NFS4 i386
my custom kernel has the follwoing differences from GENERIC:
# diff GENERIC MAMALOPYRINO-NFS4
21,22c21,22
< cpu I486_CPU
< cpu I586_CPU
---
> #cpu I486_CPU
> #cpu I586_CPU
24c24
< ident GENERIC
---
> ident MAMALOPYRINO-NFS4
49c49,50
< options NFSSERVER # Network Filesystem Server
---
> options NFSD # Network Filesystem Server
> #options NFSSERVER # Network Filesystem Server
332c333
< device firewire # FireWire bus code
---
> #device firewire # FireWire bus code
334,337c335,338
< device fwe # Ethernet over FireWire (non-standard!)
< device fwip # IP over FireWire (RFC 2734,3146)
< device dcons # Dumb console driver
< device dcons_crom # Configuration ROM for dcons
---
> #device fwe # Ethernet over FireWire (non-standard!)
> #device fwip # IP over FireWire (RFC 2734,3146)
> #device dcons # Dumb console driver
> #device dcons_crom # Configuration ROM for dcons
Which means that I have all firewire commented out (since fbsd8 kernel
panics on my msi gt627 otherwise, but that's another issue), and I have
NFSD instead of NFSSERVER as an option.
Cheers all.
--
George Mamalakis
IT Officer
Electrical and Computer Engineer (Aristotle Un. of Thessaloniki),
MSc (Imperial College of London)
Department of Electrical and Computer Engineering
Faculty of Engineering
Aristotle University of Thessaloniki
phone number : +30 (2310) 994379
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