Kernel BUG when running CleareCase mvfs on RHEL

Issue

• Kernel panic BUG: Dentry ffff88134aa27740{i=2,n=} still in use (1) [unmount of ext4 dm-0]

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  WARNING: at fs/namespace.c:678 mntput_no_expire+0x109/0x110() (Not tainted)
  Hardware name: PowerEdge R710
  Modules linked in: bridge fuse mpt2sas raid_class mptctl ipmi_devintf dell_rbu nfs fscache mvfs(U) nfsd lockd nfs_acl auth_rpcgss exportfs autofs4 sunrpc bonding 8021q garp stp llc ipv6 ext3 jbd uinput power_meter sg ixgbe dca ptp pps_core mdio bnx2 dcdbas microcode serio_raw iTCO_wdt iTCO_vendor_support i7core_edac edac_core ext4 jbd2 mbcache sr_mod cdrom sd_mod crc_t10dif wmi pata_acpi ata_generic ata_piix mptsas mptscsih mptbase scsi_transport_sas dm_mirror dm_region_hash dm_log dm_mod [last unloaded: speedstep_lib]
  Pid: 22968, comm: multiload-apple Not tainted 2.6.32-358.18.1.el6.x86_64 #1
  Call Trace:
  [<ffffffff8106e3e7>] ? warn_slowpath_common+0x87/0xc0
  [<ffffffff8106e43a>] ? warn_slowpath_null+0x1a/0x20
  [<ffffffff811a21a9>] ? mntput_no_expire+0x109/0x110
  [<ffffffff81190eab>] ? __link_path_walk+0x5eb/0x1030
  [<ffffffff8111c6f5>] ? mempool_free+0x95/0xa0
  [<ffffffff81191b7a>] ? path_walk+0x6a/0xe0
  [<ffffffff81191c7e>] ? vfs_path_lookup+0x8e/0x100
  [<ffffffffa041adcb>] ? mvop_linux_lookup_storage_file+0xb9/0x135 [mvfs]
  [<ffffffffa03d22c8>] ? mfs_vstatfs+0x14c/0x186 [mvfs]
  [<ffffffffa041406c>] ? mvfs_linux_vstatfs_wrapper+0x17/0x2d [mvfs]
  [<ffffffffa041c9f2>] ? vnlayer_linux_statfs+0x1e/0x22 [mvfs]
  [<ffffffff811b3ec4>] ? statfs_by_dentry+0x74/0xa0
  [<ffffffff811b3ffb>] ? vfs_statfs+0x1b/0xb0
  [<ffffffff811b42c0>] ? do_statfs_native+0x20/0xb0
  [<ffffffff811b4452>] ? sys_statfs+0x72/0xb0
  [<ffffffff8114762e>] ? remove_vma+0x6e/0x90
  [<ffffffff81149c27>] ? do_munmap+0x317/0x3b0
  [<ffffffff810dc937>] ? audit_syscall_entry+0x1d7/0x200
  [<ffffffff810dc685>] ? __audit_syscall_exit+0x265/0x290
  [<ffffffff8100b072>] ? system_call_fastpath+0x16/0x1b
  ---[ end trace 8f5ced7e4fd62164 ]---
  BUG: Dentry ffff88134aa27740{i=2,n=} still in use (1) [unmount of ext4 dm-0]
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