Kernel errors with nfs modules under ubuntu 10.04.3

[carlopmart]

Hi all,

  This morning, my ubuntu server 10.04.3 had triggered this problem:

[ 5464.526570] WARNING: at 
/build/buildd/linux-lts-backport-natty-2.6.38/kernel/softirq.c:159 
local_bh_enable+0x60/0x90()
[ 5464.526574] Hardware name: VMware Virtual Platform
[ 5464.526575] Modules linked in: nfs nfsd lockd fscache exportfs 
nfs_acl auth_rpcgss sunrpc ppdev vmw_balloon psmouse vmxnet3 serio_raw 
i2c_piix4 shpchp parport_pc lp parport floppy vmw_pvscsi
[ 5464.526599] Pid: 735, comm: lockd Not tainted 2.6.38-12-generic 
#51~lucid1-Ubuntu
[ 5464.526602] Call Trace:
[ 5464.526607]  [<c104c812>] ? warn_slowpath_common+0x72/0xa0
[ 5464.526610]  [<c1052b40>] ? local_bh_enable+0x60/0x90
[ 5464.526613]  [<c1052b40>] ? local_bh_enable+0x60/0x90
[ 5464.526616]  [<c104c862>] ? warn_slowpath_null+0x22/0x30
[ 5464.526619]  [<c1052b40>] ? local_bh_enable+0x60/0x90
[ 5464.526624]  [<c1423a4f>] ? skb_copy_bits+0x10f/0x210
[ 5464.526627]  [<c1423bc3>] ? __pskb_pull_tail+0x73/0x2a0
[ 5464.526646]  [<f83b3fbf>] ? cache_check+0x4f/0x200 [sunrpc]
[ 5464.526651]  [<f8065bee>] ? vmxnet3_parse_and_copy_hdr+0xce/0x170 
[vmxnet3]
[ 5464.526655]  [<f806782b>] ? vmxnet3_tq_xmit+0x17b/0x480 [vmxnet3]
[ 5464.526660]  [<c1506886>] ? _raw_spin_unlock_bh+0x16/0x20
[ 5464.526665]  [<f8067b65>] ? vmxnet3_xmit_frame+0x35/0x40 [vmxnet3]
[ 5464.526668]  [<c142d642>] ? dev_hard_start_xmit+0x202/0x460
[ 5464.526696]  [<c14469f1>] ? sch_direct_xmit+0xb1/0x180
[ 5464.526700]  [<c142eb2a>] ? dev_queue_xmit+0xfa/0x380
[ 5464.526704]  [<c145e53f>] ? ip_finish_output+0x13f/0x300
[ 5464.526707]  [<c145ea1f>] ? ip_output+0xbf/0xd0
[ 5464.526710]  [<c145d8d0>] ? ip_local_out+0x20/0x30
[ 5464.526714]  [<c145db0d>] ? ip_push_pending_frames+0x22d/0x390
[ 5464.526717]  [<c147e03a>] ? udp_push_pending_frames+0x16a/0x3d0
[ 5464.526721]  [<c147f5ce>] ? udp_sendpage+0xde/0x160
[ 5464.526724]  [<c147f4f0>] ? udp_sendpage+0x0/0x160
[ 5464.526731]  [<c1487475>] ? inet_sendpage+0x55/0xe0
[ 5464.526734]  [<c1487420>] ? inet_sendpage+0x0/0xe0
[ 5464.526738]  [<c141a6e3>] ? kernel_sendpage+0x43/0x70
[ 5464.526750]  [<f83ad3b6>] ? svc_send_common+0x56/0x130 [sunrpc]
[ 5464.526761]  [<f83ad500>] ? svc_sendto+0x70/0x1e0 [sunrpc]
[ 5464.526765]  [<c127011d>] ? kref_put+0x2d/0x60
[ 5464.526769]  [<c1421f3d>] ? __kfree_skb+0x3d/0x90
[ 5464.526771]  [<c1421f3d>] ? __kfree_skb+0x3d/0x90
[ 5464.526775]  [<c1425db2>] ? skb_free_datagram_locked+0x82/0xf0
[ 5464.526786]  [<f83ad691>] ? svc_udp_sendto+0x21/0x50 [sunrpc]
[ 5464.526797]  [<f83b7608>] ? svc_send+0x88/0xc0 [sunrpc]
[ 5464.526808]  [<f83ab29f>] ? svc_process+0xff/0x140 [sunrpc]
[ 5464.526814]  [<f80d7b52>] ? lockd+0xc2/0x1e0 [lockd]
[ 5464.526818]  [<c1046c90>] ? default_wake_function+0x10/0x20
[ 5464.526822]  [<c1035d28>] ? __wake_up_common+0x48/0x70
[ 5464.526825]  [<c103b03e>] ? complete+0x4e/0x60
[ 5464.526830]  [<f80d7a90>] ? lockd+0x0/0x1e0 [lockd]
[ 5464.526834]  [<c106a1d4>] ? kthread+0x74/0x80
[ 5464.526837]  [<c106a160>] ? kthread+0x0/0x80
[ 5464.526841]  [<c10036be>] ? kernel_thread_helper+0x6/0x10
[ 5464.526844] ---[ end trace 3ef368e5f078667d ]---

It seems problems with nfs modules ... Is this a bug?? Do I need to 
change kernel version??

Thanks.
-- 
CL Martinez
carlopmart {at} gmail {d0t} com