Re: rpc.svcgssd problem after updating client 1.2.2->1.2.3

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On 03/17/2011 02:48 PM, Vladimir Elisseev wrote:
> Hello,
> 
> I've got a problem after updating NFS client. I've been trying to find
> possible solution without a success for a while, so I'd appreciate any
> help. All the info is below. Client has kernel 2.6.37 and server 2.6.36.
> 
> Regards,
> Vladimir.
> 
> On the server side the error is "rpc.svcgssd[15159]: qword_eol: fflush
> failed: errno 22 (Invalid argument)", the full track is below:
I've seen this before but I believe it was in mountd. The fflush(3) call 
is failing with EINVAL on the upcall fd... I forget how it cleared its
self up..... 

steved.

> Mar 17 17:06:03 srv2 rpc.svcgssd[15159]: leaving poll
> Mar 17 17:06:03 srv2 rpc.svcgssd[15159]: handling null request
> Mar 17 17:06:03 srv2 rpc.svcgssd[15159]: sname = host/x.x.x@xxx
> Mar 17 17:06:03 srv2 rpc.svcgssd[15159]: nfs4_gss_princ_to_ids: calling
> umich_ldap->princ_to_ids
> Mar 17 17:06:03 srv2 rpc.svcgssd[15159]: ldap_init_and_bind: version
> mismatch between API information and protocol version. Setting protocol
> version to 3
> Mar 17 17:06:03 srv2 rpc.svcgssd[15159]: nfs4_gss_princ_to_ids:
> umich_ldap->princ_to_ids returned -2
> Mar 17 17:06:03 srv2 rpc.svcgssd[15159]: nfs4_gss_princ_to_ids: calling
> nsswitch->princ_to_ids
> Mar 17 17:06:03 srv2 rpc.svcgssd[15159]: nss_getpwnam: name
> 'host/x.x.x@xxx' domain '(null)': resulting localname
> 'host/user.net.home'
> Mar 17 17:06:03 srv2 rpc.svcgssd[15159]: nfs4_gss_princ_to_ids:
> nsswitch->princ_to_ids returned -2
> Mar 17 17:06:03 srv2 rpc.svcgssd[15159]: nfs4_gss_princ_to_ids: final
> return value is -2
> Mar 17 17:06:03 srv2 rpc.svcgssd[15159]: DEBUG: serialize_krb5_ctx:
> lucid version!
> Mar 17 17:06:03 srv2 rpc.svcgssd[15159]: prepare_krb5_rfc4121_buffer:
> protocol 1
> Mar 17 17:06:03 srv2 rpc.svcgssd[15159]: prepare_krb5_rfc4121_buffer:
> serializing key with enctype 18 and size 32
> Mar 17 17:06:03 srv2 rpc.svcgssd[15159]: doing downcall
> Mar 17 17:06:03 srv2 rpc.svcgssd[15159]: mech: krb5, hndl len: 4, ctx
> len 52, timeout: 1300464362 (86399 from now), clnt: host@xxxxx, uid: -1,
> gid: -1, num aux grps: 0:
> Mar 17 17:06:03 srv2 rpc.svcgssd[15159]: qword_eol: fflush failed: errno
> 22 (Invalid argument)
> Mar 17 17:06:03 srv2 rpc.svcgssd[15159]: WARNING: error writing to
> downcall channel /proc/net/rpc/auth.rpcsec.context/channel: Invalid
> argument
> Mar 17 17:06:03 srv2 rpc.svcgssd[15159]: sending null reply
> Mar 17 17:06:03 srv2 rpc.svcgssd[15159]: writing message: \x
> \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
6!
>  50e6f2a565b7d779220c9c5c40c504533de623c63e3f229749f34e4d64cfc050083c09b3913371d0203994d3893a6640b6d9e1a5c43949f0b6567b755c99c4876f6987e7c3886d2eddd5cca1775ae4b0cde83910ddd786706c34fdbc18eca86206d42c05fd4fda4 1300378023 0 0 \x2d000000 \x60819906092a864886f71201020202006f8189308186a003020105a10302010fa27a3078a003020112a271046f5b995dfc1da7fffbad590382fac5637845400ac2b3d3943196e2c4ab8d55edfccfaf99b27d5e06ca56df734d817378c16a4b0c0fee21ecffd1be76b0cdffb8715e0cfe8659e3344407312e18194df2acd1795f8285f6f60ac31658d6bc678750f0fa0bb9e8d41ea2846832f8c7bc91
> Mar 17 17:06:03 srv2 rpc.svcgssd[15159]: finished handling null request
> Mar 17 17:06:03 srv2 rpc.svcgssd[15159]: entering poll
> 
> On the client side mount ends with "access denied" error, the full log
> is below:
> Mar 17 17:09:06 user rpc.gssd[32238]: handling gssd upcall
> (/var/lib/nfs/rpc_pipefs/nfs/clnt37) 
> Mar 17 17:09:06 user rpc.gssd[32238]: handle_gssd_upcall: 'mech=krb5
> uid=0 enctypes=18,17,16,23,3,1,2 ' 
> Mar 17 17:09:06 user rpc.gssd[32238]: handling krb5 upcall
> (/var/lib/nfs/rpc_pipefs/nfs/clnt37) 
> Mar 17 17:09:06 user rpc.gssd[32238]: process_krb5_upcall: service is
> '<null>' 
> Mar 17 17:09:06 user rpc.gssd[32238]: Full hostname for 'nfs.x.x' is
> 'nfs.x.x' 
> Mar 17 17:09:06 user rpc.gssd[32238]: Full hostname for 'user.x.x' is
> 'user.x.x' 
> Mar 17 17:09:06 user rpc.gssd[32238]: No key table entry found for
> root/user.x.x@xxx while getting keytab entry for 'root/user.x.x@xxx' 
> Mar 17 17:09:06 user rpc.gssd[32238]: No key table entry found for
> nfs/user.x.x@xxx while getting keytab entry for 'nfs/user.x.x@xxx' 
> Mar 17 17:09:06 user rpc.gssd[32238]: Success getting keytab entry for
> 'host/user.x.x@xxx' 
> Mar 17 17:09:06 user rpc.gssd[32238]: Successfully obtained machine
> credentials for principal 'host/user.x.x@xxx' stored in ccache
> 'FILE:/tmp/krb5cc_machine_x.x'    
> Mar 17 17:09:06 user rpc.gssd[32238]: INFO: Credentials in CC
> 'FILE:/tmp/krb5cc_machine_x.x' are good until 1300464546 
> Mar 17 17:09:06 user rpc.gssd[32238]: using FILE:/tmp/krb5cc_machine_x.x
> as credentials cache for machine creds 
> Mar 17 17:09:06 user rpc.gssd[32238]: using environment variable to
> select krb5 ccache FILE:/tmp/krb5cc_machine_x.x 
> Mar 17 17:09:06 user rpc.gssd[32238]: creating context using fsuid 0
> (save_uid 0) 
> Mar 17 17:09:06 user rpc.gssd[32238]: creating tcp client for server
> nfs.x.x 
> Mar 17 17:09:06 user rpc.gssd[32238]: DEBUG: port already set to 2049 
> Mar 17 17:09:06 user rpc.gssd[32238]: creating context with server
> nfs@xxxxxxx 
> Mar 17 17:09:06 user rpc.gssd[32238]: WARNING: Failed to create krb5
> context for user with uid 0 for server nfs.x.x 
> Mar 17 17:09:06 user rpc.gssd[32238]: WARNING: Failed to create machine
> krb5 context with credentials cache FILE:/tmp/krb5cc_machine_X.X for
> server nfs.x.x 
> Mar 17 17:09:06 user rpc.gssd[32238]: WARNING: Machine cache is
> prematurely expired or corrupted trying to recreate cache for server
> nfs.x.x 
> 
> 
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