When a deadlock kill is detected inside the storage engine, the kill
is not done immediately, to avoid calling back into the storage engine
kill_query method with various lock subsystem mutexes held. Instead the
kill is queued and done later by a slave background thread.
This patch in preparation for fixing TokuDB optimistic parallel
replication, as well as for removing locking hacks in InnoDB/XtraDB in
10.2.
Signed-off-by: Kristian Nielsen <knielsen at knielsen-hq.org>
Fix an issue in Single_line_formatting_helper: flush_on_one_line()
didn't clean up the buffered items which could cause them to be
printed for the second time.
This can't be ever observed by a user (see MDEV text for details).
This patch removes die() function from the BUILD/autorun.sh. It was
introduced in the c682570431 commit (Fix BUILD/autorun.sh to really bail
out on error.). Last users of die() was removed in the 8664de22 commit
(WL#5665: Removal of the autotools-based build system) and since it is
not used anywhere.
No functionality changes. Just cleanup.
[This is the 5.5/5.6 version of the bugfix].
The problem was that it was possible to write log files ending
in .ini/.cnf that later could be parsed as an options file.
This made it possible for users to specify startup options
without the permissions to do so.
This patch fixes the problem by disallowing general query log
and slow query log to be written to files ending in .ini and .cnf.
During REPAIR TABLE of a MyISAM table, a temporary data file (.TMD)
is created. When repair finishes, this file is renamed to the original
.MYD file. The problem was that during this rename, we copied the
stats from the old file to the new file with chmod/chown. If a user
managed to replace the temporary file before chmod/chown was executed,
it was possible to get an arbitrary file with the privileges of the
mysql user.
This patch fixes the problem by not copying stats from the old
file to the new file. This is not needed as the new file was
created with the correct stats. This fix only changes server
behavior - external utilities such as myisamchk still does
chmod/chown.
No test case provided since the problem involves synchronization
with file system operations.
Argument to malloc-lib must be included in restricted list of
directories, symlink guards added, and mysqld and mysqld-version
options restricted to command line only. Don't redirect errors to
stderr.
In galera cluster, the definer (and thus binlog invoker) must be set
for CREATE ROLE before Query_log_event is created during TOI on the
originating node.
- mysql-test/unstable-tests list is created, it includes
= tests identified as unstable by Debian;
= tests which failed in buildbot on 10.0 over the last ~6 months and were not fixed;
= tests which have been recently modified or newly added
- '*' wildcard is now supported in skip lists
Followup from 5.5 patch. Removing memory barriers on intel is wrong as
this doesn't prevent the compiler and/or processor from reorganizing reads
before the mutex release. Forcing a memory barrier before reading the waiters will
guarantee that no speculative reading takes place.
In well defined C code, the "this" pointer is never NULL. Currently, we
were potentially dereferencing a NULL pointer (master_info_index). GCC v6
removes any "if (!this)" conditions as it assumes this is always a
non-null pointer. In order to prevent undefined behaviour, check the
pointer before dereferencing and remove the check within member
functions.
The issue was that when running with valgrind the wait for master_pos_Wait()
was not long enough.
This patch also fixes two other failures that could affect rpl_mdev6020:
- check_if_conflicting_replication_locks() didn't properly check domains
- 'did_mark_start_commit' was after signals to other threads was sent which could
get the variable read too early.
