BUG: soft lockup detected on CPU#0! on kernel 2.6.16.1

[Don Dupuis]

I was doing some testing on my machine to track down another issue and
this one came up.

Restarting system.
.
BUG: soft lockup detected on CPU#0!

Pid: 143, comm:              pdflush
EIP: 0060:[<c033208b>] CPU: 0
EIP is at _spin_lock+0x6/0x13
 EFLAGS: 00000246    Not tainted  (2.6.16.1 #6)
EAX: c16124c0 EBX: 00000001 ECX: 00000000 EDX: c151e000
ESI: c16124c0 EDI: 00000000 EBP: c151ebb8 DS: 007b ES: 007b
CR0: 8005003b CR2: b7edc6c0 CR3: 01646000 CR4: 000006d0
BUG: soft lockup detected on CPU#0!

Pid: 143, comm:              pdflush
EIP: 0060:[<c01b5a14>] CPU: 0
EIP is at __try_to_free_cp_buf+0x64/0x69
 EFLAGS: 00000207    Not tainted  (2.6.16.1 #6)
EAX: 0014402d EBX: dd96aa2c ECX: 00000000 EDX: d3d7a580
ESI: c151ebec EDI: c151ebf0 EBP: c151eba8 DS: 007b ES: 007b
CR0: 8005003b CR2: b7edc6c0 CR3: 01646000 CR4: 000006d0
BUG: soft lockup detected on CPU#0!

Pid: 143, comm:              pdflush
EIP: 0060:[<c01b5a14>] CPU: 0
EIP is at __try_to_free_cp_buf+0x64/0x69
 EFLAGS: 00000207    Not tainted  (2.6.16.1 #6)
EAX: 0014402d EBX: de28efa8 ECX: 00000000 EDX: cb3fb2dc
ESI: c151ebec EDI: c151ebf0 EBP: c151eba8 DS: 007b ES: 007b
CR0: 8005003b CR2: b7edc6c0 CR3: 01646000 CR4: 000006d0
BUG: soft lockup detected on CPU#0!

Pid: 143, comm:              pdflush
EIP: 0060:[<c01b5e0b>] CPU: 0
EIP is at log_do_checkpoint+0x80/0x19e
 EFLAGS: 00000282    Not tainted  (2.6.16.1 #6)
EAX: c16d86ec EBX: cd312684 ECX: c151ebf0 EDX: ddcfb448
ESI: c1612400 EDI: 00000001 EBP: c151ed00 DS: 007b ES: 007b
CR0: 8005003b CR2: b7edc6c0 CR3: 01646000 CR4: 000006d0
BUG: soft lockup detected on CPU#0!

Pid: 143, comm:              pdflush
EIP: 0060:[<c033208b>] CPU: 0
EIP is at _spin_lock+0x6/0x13
 EFLAGS: 00000246    Not tainted  (2.6.16.1 #6)
EAX: c16124c0 EBX: 00000001 ECX: 00000000 EDX: c151e000
ESI: c16124c0 EDI: 00000000 EBP: c151ebb8 DS: 007b ES: 007b
CR0: 8005003b CR2: b7edc6c0 CR3: 01646000 CR4: 000006d0

This can be reproduced by the following:
dd if=/dev/zero of=/tmp/junk bs=1M &
and about 3 to 5 seconds later
sudo reboot

The machine will reboot and I keep doing the same thing. Usually
around the 3rd or 4th time, I will have this soft lockup. My root
device is /dev/md_d0 and /tmp is /dev/md_d0p9. THe machine in question
is a Dell 745n and the disks are sata. The controller is an Intel
GD31244
I have also attached my .config

Attachment: .config
Description: Binary data