RHEL 6 NFS サーバーが lru_put_end でパニックする

Issue

general protection fault:0000 [#1] SMP 
last sysfs file:/sys/devices/system/cpu/online
CPU 18 
Modules linked in: nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack iptable_filter ip_tables nfs fuse mptctl mptbase dell_rbu nfsd lockd nfs_acl auth_rpcgss autofs4 sunrpc cachefiles fscache(T) bonding 8021q garp stp llc ipv6 ipt_REJECT xfs exportfs scsi_dh_rdac dm_round_robin dm_multipath uinput ipmi_devintf iTCO_wdt iTCO_vendor_support dcdbas microcode power_meter sg shpchp bnx2x libcrc32c mdio sb_edac edac_core lpc_ich mfd_core ext4 jbd2 mbcache sr_mod cdrom sd_mod crc_t10dif ahci megaraid_sas wmi mpt2sas scsi_transport_sas raid_class dm_mirror dm_region_hash dm_log dm_mod [last unloaded: nf_conntrack]

Pid:6777, comm: nfsd Tainted:G           ---------------  T 2.6.32-431.1.2.el6.x86_64 #1 Dell Inc. PowerEdge R720/0C4Y3R
RIP:0010:[<ffffffffa05bbf90>]  [<ffffffffa05bbf90>] lru_put_end+0x20/0x50 [nfsd]
RSP:0018:ffff88081ea51d50  EFLAGS:00010286
RAX: dead000000200200 RBX: ffff88081e956000 RCX: ffff88081e956028
RDX: dead000000100100 RSI: ffff88070193d908 RDI: ffff88070193d918
RBP: ffff88081ea51d50 R08: ffff88070193d918 R09:0000000000000001
R10:0000000000000000 R11:0000000000000006 R12: ffff88070193d908
R13:0000000000000000 R14: ffff88070193d908 R15:0000000000000002
FS:0000000000000000(0000) GS:ffff880044720000(0000) knlGS:0000000000000000
CS:0010 DS:0018 ES:0018 CR0:000000008005003b
CR2:00007fdb8efe9000 CR3:0000000001a85000 CR4:00000000000407e0
DR0:0000000000000000 DR1:0000000000000000 DR2:0000000000000000
DR3:0000000000000000 DR6:00000000ffff0ff0 DR7:0000000000000400
Process nfsd (pid:6777, threadinfo ffff88081ea50000, task ffff88082fee3540)
Stack:
 ffff88081ea51dd0 ffffffffa05bc4a6 ffffffffa0508f78 ffff88070193d92c
<d> ffff88081e956028 ffffffffdbccad6a 02b588081e957a28 ffffffffa05e2f40
<d> 00000006269f319b 0000000700000003 ffff88081ea51dd0 ffff88081e956000
Call Trace:
 [<ffffffffa05bc4a6>] nfsd_cache_lookup+0x3a6/0x700 [nfsd]
 [<ffffffffa0508f78>] ? svc_authenticate+0xc8/0x170 [sunrpc]
 [<ffffffffa05b03e8>] nfsd_dispatch+0xa8/0x230 [nfsd]
 [<ffffffffa0505844>] svc_process_common+0x344/0x640 [sunrpc]
 [<ffffffff81065df0>] ? default_wake_function+0x0/0x20
 [<ffffffffa0505e80>] svc_process+0x110/0x160 [sunrpc]
 [<ffffffffa05b0b52>] nfsd+0xc2/0x160 [nfsd]
 [<ffffffffa05b0a90>] ? nfsd+0x0/0x160 [nfsd]
 [<ffffffff8109af06>] kthread+0x96/0xa0
 [<ffffffff8100c20a>] child_rip+0xa/0x20
 [<ffffffff8109ae70>] ? kthread+0x0/0xa0
 [<ffffffff8100c200>] ? child_rip+0x0/0x20
Code:66 66 90 48 83 c4 08 5b c9 c3 90 55 48 89 e5 0f 1f 44 00 00 48 8b 05 40 19 65 e1 48 8b 57 10 48 89 47 58 48 8b 47 18 48 83 c7 10 <48> 89 42 08 48 89 10 48 c7 c2 50 2f 5e a0 48 8b 35 b3 6f 02 00 
RIP  [<ffffffffa05bbf90>] lru_put_end+0x20/0x50 [nfsd]
 RSP <ffff88081ea51d50>