Re: 2.6: can't lockf() over NFS

[Chris Wright]

* Matt Bernstein (mb/lkml@xxxxxxxxxxxxxx) wrote:
> I can't get Debian testing to log in to GNOME when home directories are
> mounted over NFS (Linux 2.6 client -> Linux 2.4-ac server). It claims not
> to be able to lock a file..
> 
> I tried writing a trivial program to test lockf() and it returns ENOLCK 
> over NFS, but succeeds locally. The client kernel offers some grumbles:
> 
> RPC: Can't bind to reserved port (13).
> RPC: can't bind to reserved port.
> nsm_mon_unmon: rpc failed, status=-5
> lockd: cannot monitor a.b.c.d
> lockd: failed to monitor a.b.c.d
> 
> [where a.b.c.d is our NFS server]
> 
> /sbin/rpc.statd is running on both client and server, and with a 2.4
> kernel on the client (as the only change) GNOME logins and the lockf()  
> test program work just fine.
> 
> Any ideas? I'm stumped at this point.

Yes, can you either change your config to:

CONFIG_SECURITY=n

or:

CONFIG_SECURITY=y
CONFIG_SECURITY_CAPABILITIES=y

or:

CONFIG_SECURITY=y
CONFIG_SECURITY_CAPABILITIES=m
and modprobe capability

Thanks, this had fallen off my radar.
-chris
-- 
Linux Security Modules     http://lsm.immunix.org     http://lsm.bkbits.net
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