Kernel BUG in truncate_inode_pages_range running gluster fuse client on RHEL

Issue

• Our server crashed and a kernel bug printed to the log.

  kernel BUG at mm/truncate.c:220!
  invalid opcode: 0000 [#1] SMP 
  last sysfs file: /sys/devices/pci0000:00/0000:00:02.0/0000:04:00.3/host1/rport-1:0-3/target1:0:1/1:0:1:3/state
  CPU 2 
  Modules linked in: ... fuse ...
  Pid: 6078, comm: CvMountd Not tainted 2.6.32-642.3.1.el6.x86_64 #1 HP ProLiant BL460c Gen8
  RIP: 0010:[<ffffffff811468df>]  [<ffffffff811468df>] truncate_inode_pages_range+0x4ef/0x500
  RSP: 0018:ffff881023d1bd38  EFLAGS: 00010297
  RAX: 0000000000000816 RBX: 0000000000ab304d RCX: 0000000000000000
  RDX: 0000000000adc816 RSI: 0000000000ab304d RDI: ffff88082eca84e0
  ...
  Process CvMountd (pid: 6078, threadinfo ffff881023d18000, task ffff881032b03520)
  ...
  Call Trace:
  [<ffffffffa03ba1aa>] ? wait_answer_interruptible+0xaa/0xc0 [fuse]
  [<ffffffff810a6840>] ? autoremove_wake_function+0x0/0x40
  [<ffffffff811584e2>] ? unmap_mapping_range+0x72/0x140
  [<ffffffff81146954>] truncate_pagecache_range+0x64/0x80
  [<ffffffffa03c1f54>] fuse_file_fallocate+0x1f4/0x240 [fuse]
  [<ffffffffa03bd3c4>] fuse_fallocate+0x74/0x90 [fuse]
  [<ffffffff81197b29>] do_fallocate+0x139/0x160
  [<ffffffff81197b9e>] sys_fallocate+0x4e/0x80
  [<ffffffff8100b0d2>] system_call_fastpath+0x16/0x1b