Re: 3.23.42 first crash (fwd) - Sasha Pachev - com.mysql.lists.bugs

10 messages in com.mysql.lists.bugsRe: 3.23.42 first crash (fwd)

From	Sent On	Attachments
Martin MOKREJŠ	11 Sep 2001 08:11
Michael Widenius	12 Sep 2001 04:25
Martin MOKREJŠ	12 Sep 2001 06:09
Martin MOKREJŠ	17 Sep 2001 05:34
Sasha Pachev	17 Sep 2001 06:23
Martin MOKREJŠ	17 Sep 2001 07:35
Michael Widenius	18 Sep 2001 04:36
Martin MOKREJŠ	18 Sep 2001 09:11
Michael Widenius	18 Sep 2001 10:47
Martin MOKREJŠ	19 Sep 2001 07:25

Subject:	Re: 3.23.42 first crash (fwd)
From:	Sasha Pachev (sas...@mysql.com)
Date:	09/17/2001 06:23:20 AM
List:	com.mysql.lists.bugs

Description:

So, finally during weekend it crashed again.

0x807b72f handle_segfault__Fi + 383 0x812b92a pthread_sighandler + 154 0x81536e3 memcpy + 51 0x80fbd3e _mi_pack_get_block_info + 394 0x80fc0da _mi_read_pack_record + 54 0x80f46e5 mi_rkey + 453 0x80c6209 index_read_idx__9ha_myisamPcUiPCcUi16ha_rkey_function + 53 0x80a130b join_read_const__FP13st_join_table + 95 0x80a1108 join_read_const_tables__FP4JOIN + 132 0x8099162

mysql_select__FP3THDP13st_table_listRt4List1Z4ItemP4ItemRt4List1Z15Item_func_matchP8st_orderT5P4ItemT5UiP13select_result + 2002

0x8081e6f mysql_execute_command__Fv + 707 0x8085c96 mysql_parse__FP3THDPcUi + 210 0x80812bd do_command__FP3THD + 1261 0x80807bc handle_one_connection__FPv + 548

Some pointers may be invalid and cause the dump to abort... thd->query at 0x5a187ec0 is invalid pointer thd->thread_id=6911

This looks like severe memory corruption. So my guess is either some rare bad buffer overrun in the compressed table code or there is something really wrong with your kernel. What kind of patch are you running?