MySQL Bugs: #43533: './mysqld -v -help' crashes

Bug #43533	'./mysqld -v -help' crashes
Submitted:	10 Mar 2009 12:51	Modified:	29 Jun 2009 0:55
Reporter:	Alexander Nozdrin	Email Updates:
Status:	Closed	Impact on me:	None
Category:	MySQL Server: General	Severity:	S3 (Non-critical)
Version:	6.0-TRUNK	OS:	Any
Assigned to:	Alfranio Junior	CPU Architecture:	Any

Description:
$ ./sql/mysqld -v -help
090310 15:49:43 [Warning] Can't create test file /mnt/raid/alik/MySQL/bzr/bug43138/6.0-rt-bug43138/elp/quad.lower-test
090310 15:49:43 [Warning] Can't create test file /mnt/raid/alik/MySQL/bzr/bug43138/6.0-rt-bug43138/elp/quad.lower-test
./sql/mysqld: Can't change dir to '/mnt/raid/alik/MySQL/bzr/bug43138/6.0-rt-bug43138/elp/' (Errcode: 2)
090310 15:49:43 [ERROR] Aborting

Segmentation fault

$ gdb ./sql/mysqld

(gdb) run -v -help
[cut]
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7f1da31fa6f0 (LWP 2042)]
0x00000000009959ea in ~Delegate (this=0x0) at rpl_handler.h:129
129	    inited= FALSE;

(gdb) bt
#0  0x00000000009959ea in ~Delegate (this=0x0) at rpl_handler.h:129
#1  0x0000000000995a31 in ~Trans_delegate (this=0x0) at rpl_handler.h:142
#2  0x0000000000995258 in delegates_destroy () at rpl_handler.cc:118
#3  0x000000000075d228 in clean_up (print_message=true) at mysqld.cc:1376
#4  0x000000000075d691 in unireg_abort (exit_code=1) at mysqld.cc:1305
#5  0x000000000075ff72 in main (argc=3, argv=0x7fffab2176b8) at mysqld.cc:4622

How to repeat:
*

Verified just as described with recent 6.0 from bzr.

The "delegate" part is a duplicate of Bug#42244.

The other part is.. it crashes somewhere else:

safe_mutex: Trying to destroy unitialized mutex at sql_repl.cc, line 1040
Aborted (core dumped)

It crashes as follows (6.0-bugteam):

#0  0xb8032430 in __kernel_vsyscall ()
#1  0xb7d258a0 in raise () from /lib/tls/i686/cmov/libc.so.6
#2  0xb7d27268 in abort () from /lib/tls/i686/cmov/libc.so.6
#3  0x089db382 in safe_mutex_destroy (mp=0x8de33e0, file=0x8baef5c "sql_repl.cc", line=1027) at thr_mutex.c:522
#4  0x085330c2 in end_slave_start () at sql_repl.cc:1027
#5  0x0836ac69 in clean_up (print_message=true) at mysqld.cc:1433
#6  0x0836af06 in unireg_abort (exit_code=1) at mysqld.cc:1326
#7  0x0836d9aa in main (argc=3, argv=0xbfd33834) at mysqld.cc:4592

A patch for this bug has been committed. After review, it may
be pushed to the relevant source trees for release in the next
version. You can access the patch from:

  http://lists.mysql.com/commits/75845

3346 Alfranio Correia	2009-06-08
      BUG#43533 './mysqld -v -help' crashes
      
      "end_slave_start" was trying to destroy a mutex "LOCK_slave_start" which
      was not intialized thus generating an error (i.e. abort()) in debug mode.
      To fix this problem, we introduced a variable that indicates when the 
      mutex "LOCK_slave_start" was initialized by "init_slave_start" and can be
      safely destroyed.

A patch for this bug has been committed. After review, it may
be pushed to the relevant source trees for release in the next
version. You can access the patch from:

  http://lists.mysql.com/commits/75949

3346 Alfranio Correia	2009-06-09
      BUG#43533 './mysqld -v -help' crashes
      
      "end_slave_start" was trying to destroy a mutex "LOCK_slave_start" which
      was not intialized thus generating an error (i.e. abort()) in debug mode.
      To fix this problem, we introduced a variable that indicates when the
      mutex "LOCK_slave_start" was initialized by "init_slave_start" and can be
      safely destroyed.

Pushed into 5.4.4-alpha (revid:alik@sun.com-20090616183122-chjzbaa30qopdra9) (version source revid:alfranio.correia@sun.com-20090610235845-edxl19t2wtrc8yed) (merge vers: 5.4.4-alpha) (pib:11)

Noted in 5.4.4 changelog.

The server crashed if invoked with the --verbose and --help options.