RHEL6.4: kernel BUG at mm/huge_memory.c:1494! RIP is at __split_huge_page_pmd()

Issue

• System crashed with following panic message:

kernel BUG at mm/huge_memory.c:1494!
invalid opcode: 0000 [#1] SMP 
..
<4>RIP: 0010:[<ffffffff811797e0>]  [<ffffffff811797e0>] __split_huge_page_pmd+0xb0/0xc0
..
<4>Process cdm (pid: 19986, threadinfo ffff88146198e000, task ffff881513681540)
<4>Stack:
..
<4>Call Trace:
<4> [<ffffffff81141bf4>] unmap_vmas+0xa74/0xc30
<4> [<ffffffff81510826>] ? rwsem_down_read_failed+0x26/0x30
<4> [<ffffffff811423a1>] zap_page_range+0x81/0xf0
<4> [<ffffffff8113e229>] sys_madvise+0x519/0x7b0
<4> [<ffffffff8100b072>] system_call_fastpath+0x16/0x1b