Server experienced panic after PCI Express Error

Issue

• Server rebooted unexpectedly.
• Server crashed with the following trace:

[...]
   EXT3 FS on dm-60, internal journal
   EXT3-fs: mounted filesystem with ordered data mode.
   st0: Block limits 1 - 16777215 bytes.
   Syscall Monitor - ACTIVATED
   Syscall Monitor - ACTIVATED
   loop: loaded (max 8 devices)
   Kernel panic - not syncing: An NMI occurred, please see the Integrated Management Log for details.

• Examining the IML shows:

Critical PCI Bus 06/21/2013 08:51 06/21/2013 08:51 1 Uncorrectable PCI Express Error (Embedded device, Bus 0, Device 3, Function 0, Error status 0x00000000) 
Informational Maintenance 03/22/2013 22:27 03/22/2013 22:27 1 IML cleared through hpasmcli