[ewg] RC5 issues

[Steve Wise]

I'm seeing weird problems with RC5 on RH5.2.

Anyone else seeing problems?

I'm  seeing soft lockups:

BUG: soft lockup - CPU#0 stuck for 10s! [nfsd4:2753]
CPU 0:
Modules linked in: nfsd(U) auth_rpcgss(U) exportfs(U) nfs(U) lockd(U) 
nfs_acl(U) autofs4 hidp rfcomm l2cap bluetooth sunrpc(U) 
cpufreq_ondemand ipoib_helper(U) ipv6 xfrm_nalgo crypto_api mlx4_core(U) 
dm_multipath video sbs backlight i2c_ec button battery asus_acpi 
acpi_memhotplug ac parport_pc lp parport shpchp i2c_piix4 cxgb3(U) tg3 
i2c_core ide_cd cdrom serio_raw sg pcspkr dm_snapshot dm_zero dm_mirror 
dm_mod sata_svw libata sd_mod scsi_mod ext3 jbd ehci_hcd ohci_hcd uhci_hcd
Pid: 2753, comm: nfsd4 Tainted: G      2.6.18-92.1.22.el5 #1
RIP: 0010:[<ffffffff80064ba4>]  [<ffffffff80064ba4>] 
.text.lock.spinlock+0x2/0x30
RSP: 0018:ffff81018be63dc8  EFLAGS: 00000286
RAX: ffffffff80412600 RBX: ffff81019e89d0c0 RCX: 0000000000000000
RDX: ffff810080bf5000 RSI: 0000000000000282 RDI: ffff810001007600
RBP: 0000000100000002 R08: ffff81018be62000 R09: 000000000000003c
R10: ffff81019fcdc098 R11: 0000000000000202 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000041229940(0000) GS:ffffffff803a0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
CR2: 00002b4ed5ce0000 CR3: 0000000000201000 CR4: 00000000000006e0

Call Trace:
 [<ffffffff8844dbe9>] :nfs:mnt_want_write+0x25/0x70
 [<ffffffff884c2535>] :nfsd:nfsd4_recdir_purge_old+0x16/0x64
 [<ffffffff884bd675>] :nfsd:laundromat_main+0x5c/0x20d
 [<ffffffff8004cf77>] run_workqueue+0x94/0xe4
 [<ffffffff80049856>] worker_thread+0x0/0x122
 [<ffffffff8009dc54>] keventd_create_kthread+0x0/0xc4
 [<ffffffff80049946>] worker_thread+0xf0/0x122
 [<ffffffff8008ac69>] default_wake_function+0x0/0xe
 [<ffffffff8009dc54>] keventd_create_kthread+0x0/0xc4
 [<ffffffff8009dc54>] keventd_create_kthread+0x0/0xc4
 [<ffffffff80032569>] kthread+0xfe/0x132
 [<ffffffff8005dfb1>] child_rip+0xa/0x11
 [<ffffffff8009dc54>] keventd_create_kthread+0x0/0xc4
 [<ffffffff8003246b>] kthread+0x0/0x132
 [<ffffffff8005dfa7>] child_rip+0x0/0x11