| Title | MPS crashes Mysteriously with Win2K / Office XP |
| Status | suspended |
| Priority | critical |
| Assigned user | David Jones |
| Organization | Ravenbrook |
| Description | Initially reported by Configura as mysterious crash when using lots of memory. Subsequently found to be a problem using the MPS on a machine that is running Windows 2000 and has Office XP installed. |
| Analysis | It turns out that there is a Microsoft thing installed with Office XP called ctfmon.exe that disrupts everything in some mysterious way. A workaround is to remove all MPS protection whilst processing CTFMON messages. See job000813 2004-03-05 This turned out to be because CTFMON installs a non-cooperating exception handler and Configura's app handles events and callbacks, which use the MPS, without ensuring an MPS protection barrier is present. The fix, now implemented at Configura, is to have the event handler also jump through the MPS trampoline. This completely fixes the problem and has adequate performance. See mail thread that includes [6], [7], and [8] Status -> suspended as this is no longer a problem. |
| How found | customer |
| Evidence | Initial report: [1] //info.ravenbrook.com/mail/2003/09/02/20-00-00/0.txt[2] //info.ravenbrook.com/mail/2003/10/01/16-36-38/0.txtThe evil discovered: [3] //info.ravenbrook.com/mail/2003/10/09/09-18-10/0.txtWants more control over what MPS does with memory: [4] //info.ravenbrook.com/mail/2003/10/29/14-33-04/0.txtMicrosoft KB [5] <URL: http://support.microsoft.com/default.aspx?scid=kb;en-us;Q313176>Configura finally solve it: [6] //info.ravenbrook.com/mail/2003/11/23/13-26-14/0.txt[7] //info.ravenbrook.com/mail/2003/11/24/17-00-54/0.txt[8] //info.ravenbrook.com/mail/2003/11/25/08-41-39/0.txt |
| Observed in | 1.101.0 |
| Created by | David Jones |
| Created on | 2003-11-04 09:43:40 |
| Last modified by | Gareth Rees |
| Last modified on | 2012-10-22 12:56:54 |
| History | 2003-11-04 DRJ created 2004-03-05 DRJ suspended (no longer required) |