Description of problem:

Leaving a domU running during the whole nigth got this BUG()


BUG: soft lockup detected on CPU#0!

Pid: 5409, comm:           makewhatis
EIP: 0061:[<c0115538>] CPU: 0
EIP is at dup_fd+0xe7/0x2e1
 EFLAGS: 00000246    Not tainted  (2.6.15-1.2054_FC5xenU #1)
EAX: d790a000 EBX: cc2e3e98 ECX: cffeca20 EDX: 000000cf
ESI: cef5c588 EDI: c0402580 EBP: cc2e3ebc DS: 007b ES: 007b
CR0: 8005003b CR2: 095af674 CR3: 0e863000 CR4: 00000640
 [<c014101a>] kzalloc+0x10/0x36
 [<c0115776>] copy_files+0x44/0x5b
 [<c0116059>] copy_process+0x48a/0xf13
 [<c01446b5>] __handle_mm_fault+0x953/0xa08
 [<c0116d7f>] do_fork+0x87/0x194
 [<c010e752>] do_page_fault+0x1d5/0x6a8
 [<c0102b6b>] sys_clone+0x29/0x2e
 [<c0104b15>] syscall_call+0x7/0xb


Fedora Core release 4 (Rawhide)
Kernel 2.6.15-1.2054_FC5xenU on an i686

Version-Release number of selected component (if applicable):

At least from 2.6.15-1.2054_FC5xenU

How reproducible:


Steps to Reproduce:
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Actual results:


Expected results:


Additional info: