Details
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Bug
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Status: Closed (View Workflow)
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Major
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Resolution: Fixed
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10.3.15, 10.4.5
Description
The following test crashes the server:
--source include/have_innodb.inc
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--let $restart_parameters= --innodb-force-recovery=5
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--source include/restart_mysqld.inc
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SHOW ENGINE INNODB STATUS;
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In innodb_force_recovery=5 mode, no undo logs will be parsed, and purge_sys will not be initialized. The fix is simple:
--- a/storage/innobase/lock/lock0lock.cc
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+++ b/storage/innobase/lock/lock0lock.cc
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@@ -4689,7 +4689,8 @@ struct lock_print_info
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void operator()(const trx_t* trx) const
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{
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ut_ad(mutex_own(&trx_sys.mutex));
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- if (trx == purge_sys.query->trx)
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+ if (UNIV_LIKELY(purge_sys.query != NULL) &&
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+ UNIV_UNLIKELY(trx == purge_sys.query->trx))
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return;
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lock_trx_print_wait_and_mvcc_state(file, trx, now);
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The crash was introduced by the merge of MDEV-18429 from 10.2. 10.2 itself is not affected.
Attachments
Issue Links
- is caused by
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- Closed
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