DomU is crashing with RIP clear_page+18

Issue

DomU is crashing with following panic message:

Oops: 0003 [1] SMP  
CPU 6  
Modules linked in: linuxshield(U) lshook(U) md5 ipv6 autofs4 sunrpc dm_multipath xennet dm_snapshot dm_zero dm_mirror ext3 jbd raid1 dm_mod xenblk sd_mod
scsi_mod
Pid: 12371, comm: check_filesys_g Not tainted 2.6.9-89.0.9.ELxenU
RIP: e030:[<ffffffff801ebbb2>] <ffffffff801ebbb2>{clear_page+18}
RSP: e02b:ffffff8009273d60  EFLAGS: 00010216
RAX: 0000000000000000 RBX: ffffff80b00d4000 RCX: 000000000000003f
RDX: 8000000000000000 RSI: 0000000000000000 RDI: ffffff80b00d5000
RBP: ffffff8057bfe4c0 R08: 0000000000000000 R09: ffffffff8033fae0
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000003
R13: ffffff808817e000 R14: 00000000006c4c80 R15: 00000000006c91d0
FS:  0000002a955683e0(0000) GS:ffffffff8043a080(0000) knlGS:0000000000000000
CS:  e033 DS: 0000 ES: 0000
Process check_filesys_g (pid: 12371, threadinfo ffffff8009272000, task ffffff80609837f0)
Stack: ffffffff8012f0d3 0000000000000001 ffffff8057bfe4c0 0000000000000000  
      0000000000000000 dead4ead00000001 ffffff8057bfe810 ffffff8057bfe810  
      dead4ead00000001 0000000000000000  
Call Trace:<ffffffff8012f0d3>{mm_init+357} <ffffffff8012f14b>{mm_alloc+49}  
      <ffffffff8018292f>{do_execve+138} <ffffffff8010d772>{system_call+134}  
      <ffffffff8010c004>{sys_execve+52} <ffffffff8010dbdc>{stub_execve+64}  


Code: 48 89 07 48 89 47 08 48 89 47 10 48 89 47 18 48 89 47 20 48  
RIP <ffffffff801ebbb2>{clear_page+18} RSP <ffffff8009273d60>
CR2: ffffff80b00d5000
<0>Kernel panic - not syncing: Oops

Guest is crashing roughly once in a month.