| Bug #39712 | Maria crash in _ma_remove_not_visible_states | ||
|---|---|---|---|
| Submitted: | 28 Sep 2008 16:17 | Modified: | 6 May 2009 10:53 |
| Reporter: | Philip Stoev | Email Updates: | |
| Status: | Can't repeat | Impact on me: | |
| Category: | MySQL Server: Maria storage engine | Severity: | S1 (Critical) |
| Version: | 5.1-maria, 6.0-maria | OS: | Any |
| Assigned to: | CPU Architecture: | Any | |
[10 Dec 2008 16:46]
Michael Widenius
I just fixed in the Maria 5.1 tree a bug that caused the history state to contain wrong information, which could explain this crash. This patch will be in MySQL 6.0 after next merge. I put the state to 'need feedback' as there is no test case. If this bug happens again, please reopen this bug report
[10 Dec 2008 17:12]
Guilhem Bichot
Monty's fix has just been merged into 6.0-maria. Reporter, if this isn't too time-consuming, could you please re-run your SystemQA test on that latest 6.0-maria to see if you still observe the problem? Let us know if you would need help.
[11 Jan 2009 0:00]
Bugs System
No feedback was provided for this bug for over a month, so it is being suspended automatically. If you are able to provide the information that was originally requested, please do so and change the status of the bug back to "Open".
[6 May 2009 10:53]
Philip Stoev
Not seen recently.
Description: When executing the iuds6 SystemQA test, maria crashed as follows: #2 0x00000000006b5f86 in handle_segfault (sig=11) at mysqld.cc:2659 #3 <signal handler called> #4 0x0000000000b72d6f in _ma_remove_not_visible_states (org_history=0x2aaab020eda8, all=0 '\0', trnman_is_locked=1 '\001') at ma_state.c:152 #5 0x0000000000b72ea7 in _ma_remove_not_visible_states_with_lock (share=0x2aaac02b55f8) at ma_state.c:194 #6 0x0000000000bd53ed in collect_tables (str=0x4be11fe0, checkpoint_start_log_horizon=4623334381) at ma_checkpoint.c:1062 #7 0x0000000000bd3bca in really_execute_checkpoint () at ma_checkpoint.c:195 #8 0x0000000000bd3a21 in ma_checkpoint_execute (level=CHECKPOINT_MEDIUM, no_wait=1 '\001') at ma_checkpoint.c:132 #9 0x0000000000bd461c in ma_checkpoint_background (arg=0x1e) at ma_checkpoint.c:618 #10 0x0000003ba88062f7 in start_thread () from /lib64/libpthread.so.0 #11 0x0000003ba80ce85d in clone () from /lib64/libc.so.6 The crash is here: (gdb) list 147 148 last_trid= org_history->trid; 149 parent= &org_history->next; 150 for (history= org_history->next; history; history= next) 151 { 152HERE>>> next= history->next; <<<<<<<<<<<<<< HERE 153 if (!trnman_exists_active_transactions(history->trid, last_trid, 154 trnman_is_locked)) 155 { 156 my_free(history, MYF(0)); (gdb) print history $1 = (MARIA_STATE_HISTORY *) 0x2aaaffffffff How to repeat: If this happens again, a repeatable test case will be provided.