From /var/log/messages:
Nov 21 19:07:42 d2005 kernel: invalid operand: 0000 Nov 21 19:07:42 d2005 kernel: CPU: 0 Nov 21 19:07:42 d2005 kernel: EIP: 0010:[__free_pages_ok+110/560] Not tainted Nov 21 19:07:42 d2005 kernel: EIP: 0010:[<f013284e>] Not tainted Nov 21 19:07:42 d2005 kernel: EFLAGS: 00010202 Nov 21 19:07:42 d2005 kernel: EIP is at Nov 21 19:07:42 d2005 kernel: eax: 00000001 ebx: f115f060 ecx: f1000030 edx: 00000000 Nov 21 19:07:42 d2005 kernel: esi: 00000000 edi: 00000000 ebp: f5ecebec esp: f4d25e9c Nov 21 19:07:42 d2005 kernel: ds: 0018 es: 0018 ss: 0018 Nov 21 19:07:42 d2005 kernel: Process vmabuse (pid: 21660, stackpage=f4d25000) Nov 21 19:07:42 d2005 kernel: Stack: 0109e600 f115f060 f0133572 f03656c0 f03656c0 f03656c0 f03656c0 f03418e0 Nov 21 19:07:42 d2005 kernel: 000000cf 00100000 f5ecebec f0125419 0109e600 00100000 000000cf 000f2000 Nov 21 19:07:42 d2005 kernel: 00000000 a4f09000 f570fa4c a4e09000 f03418e0 00000000 a4f09000 f570fa4c Nov 21 19:07:42 d2005 kernel: Call Trace: [delete_from_swap_cache+66/80] Nov 21 19:07:42 d2005 kernel: Call Trace: [<f0133572>] Nov 21 19:07:42 d2005 kernel: [do_zap_page_range+681/960] Nov 21 19:07:42 d2005 kernel: [<f0125419>] Nov 21 19:07:42 d2005 kernel: [do_page_fault+305/1115] Nov 21 19:07:42 d2005 kernel: [<f0113411>] Nov 21 19:07:42 d2005 kernel: [zap_page_range+80/128] Nov 21 19:07:42 d2005 kernel: [<f01259c0>] Nov 21 19:07:42 d2005 kernel: [do_munmap+497/640] Nov 21 19:07:42 d2005 kernel: [<f0127f21>] Nov 21 19:07:42 d2005 kernel: [sys_munmap+51/80] Nov 21 19:07:42 d2005 kernel: [<f0127fe3>] Nov 21 19:07:42 d2005 kernel: [system_call+51/56] Nov 21 19:07:42 d2005 kernel: [<f0108c8b>] Nov 21 19:07:42 d2005 kernel: Nov 21 19:07:42 d2005 kernel: Nov 21 19:07:42 d2005 kernel: Code: 0f 0b 8b 43 18 83 e0 40 74 02 0f 0b 8b 43 18 a9 80 00 00 00