Informix - Problem description
Problem IT14768 | Status: Closed |
RUNNING ARCHECKER AGAINST ARCHIVE OF SYSTEM WITH SMART BLOB SPACES CAN CORE DUMP AND/OR RESULT IN ERROR MESSAGES IN AC_MSGPATH | |
product: | |
INFORMIX SERVER / 5725A3900 / B50 - IDS 11.50 | |
Problem description: | |
If you try to archecker an archive with smart blob data, it's possible for archecker to look at pages it shouldn't be which can cause core dumps in archecker or other various odd messages like these in the AC_MSGPATH file: STATUS: Tape type: Archive Backup Tape STATUS: OnLine version: IBM Informix Dynamic Server Version 11.50.FC9W3XO STATUS: Archive date: Thu Jan 7 12:49:37 2016 STATUS: Archive level: 0 STATUS: Tape blocksize: 1048576 STATUS: Tape size: -1778384896 STATUS: Tape number in series: 3 TIME: [2016-01-20 20:16:59] Phys Tape 3 started ERROR: Invalid chunk number 0 ERROR: Invalid chunk number 0 ERROR: Invalid chunk number 0 ERROR: Skipping page -18513_-1674088741, bad chunk number ERROR: Invalid chunk number 23917 The stack trace for archecker when it core dumped when looking at a page was this: arc_tstbit() arc_mark_page() Arc_process_page() Arc_Scan_Tapes() arc_check_level() main() This was due to an unfortunately valid chunk number in what archecker thought was a page header, but the offset was larger then the chunk which caused it to try and access the bitmap out of bounds which caused a SEGV and thus produce a core file. | |
Problem Summary: | |
**************************************************************** * USERS AFFECTED: * * IDS users who run archecker to validate archives with smart * * blob spaces configured * **************************************************************** * PROBLEM DESCRIPTION: * * See Error Description * **************************************************************** * RECOMMENDATION: * * Update to IBM Informix Server 11.50.xC10 * **************************************************************** | |
Local Fix: | |
Solution | |
Workaround | |
not known / see Local fix | |
Timestamps | |
Date - problem reported : Date - problem closed : Date - last modified : | 12.04.2016 15.06.2017 15.06.2017 |
Problem solved at the following versions (IBM BugInfos) | |
11.50.xC10 | |
Problem solved according to the fixlist(s) of the following version(s) |