Percona Server moved to https://jira.percona.com/projects/PS

LRU mutex mishandling in innodb_buffer_pool_evict_update()

  1. Series 5.5
  2. Bug #1253973
Bug #1253973 reported by Laurynas Biveinis
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Percona Server moved to https://jira.percona.com/projects/PS
Invalid
Undecided
Unassigned
5.1
Invalid
Undecided
Unassigned
5.5
Triaged
High
Unassigned
5.6
Invalid
Undecided
Unassigned

Bug Description

Credit to Sergei Golubchik, https://bazaar.launchpad.net/~maria-captains/maria/5.5/revision/3967

innodb_buffer_pool_evict_update()
{
...
    mutex_enter(&buf_pool->LRU_list_mutex);
...
     buf_LRU_free_block(&block->page,
          FALSE, FALSE);
...
    mutex_exit(&buf_pool->LRU_list_mutex);
...
}

The last buf_LRU_free_block() arg is FALSE, thus the function may attempt to re-lock already-taken LRU list mutex.

Laurynas Biveinis (laurynas-biveinis)
tags: added: merge-regression xtradb
Laurynas Biveinis (laurynas-biveinis)
tags: added: bp-split
Revision history for this message
Shahriyar Rzayev (rzayev-sehriyar) wrote :

Percona now uses JIRA for bug reports so this bug report is migrated to: https://jira.percona.com/browse/PS-3073

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