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SIGSEGV Occurs When Creating User with Encrypted Password

Document Type | Troubleshooting

Category | App Development

Applicable Product Versions | 6FS06, 6FS07, 7FS02

Document Number | TDETS014

 

Issue

Intermittent SIGSEGV occurs when creating a user with an encrypted password like IDENTIFIED BY VALUES 'UhzYkQClcFLoJOWQdqw3zA=='.
 

Example of Creating User with Encrypted Password

1. Create user with encrypted password like IDENTIFIED BY VALUES 'UhzYkQClcFLoJOWQdqw3zA=='
CREATE USER XXXXXX
IDENTIFIED BY VALUES 'UhzYkQClcFLoJOWQdqw3zA=='
DEFAULT TABLESPACE XXXXXX
PROFILE DEFAULT
ACCOUNT UNLOCK

 

2. Signal 11 (SIGSEGV) caught phenomenon occurs 
[338] *** 2024/10/10 20:59:06.589 *** Signal 11 (SIGSEGV) caught (TID = 338, SESSID = 338, OS_THR_ID = 3, PID = 4373): si_addr = 0000003200010100 : the cause of the signal can be found in a process callstack file.
[338] Thread stack: ffffffff7bc00000--ffffffff7c410000
[338] client : ip [::ffff10.30.211.90] process [SQLGateMain.exe] logon time : [2024/10/10 20:58:29]
[338] prev sql : "CREATE USER XXXXXX
IDENTIFIED BY VALUES 'UhzYkQClcFLoJOWQdqw3zA=='
DEFAULT TABLESPACE XXXXXX
PROFILE DEFAULT
ACCOUNT UNLOCK"
[338] current sql : "CREATE USER XXXXXX
IDENTIFIED BY VALUES 'UhzYkQClcFLoJOWQdqw3zA=='
DEFAULT TABLESPACE XXXXXX
PROFILE DEFAULT
ACCOUNT UNLOCK"
[270] *** 2024/10/10 20:59:06.604 ***
[270] callstack dump from tbsvr_AGNT for [WTHR, 338, 3/4373]
[270] SEE DUMP tbsvr.callstack.4373 (lwpid 3) BY PSTACK
While executing sql : [CREATE USER XXXXXX
IDENTIFIED BY VALUES 'UhzYkQClcFLoJOWQdqw3zA=='
DEFAULT TABLESPACE XXXXXX
PROFILE DEFAULT
ACCOUNT UNLOCK

 

3. Callstack when SIGSEGV occurs 
----------- lwp# 3 / thread# 3 ---------------
00007fffff0e1c74 nanosleep (ffffffff7c3f5b80, 0)
00007fffff0cd1c4 usleep (186a0, 431bde83, 431bde83, 431bdc00, 10dd7d68, 10dd7c00) + 64
000000011c7406fc sync_sig_handler (b, ffffffff7c3f6320, 0, 1, 13d13d288, 8400) + 984
00007fffff0ddb60 __sighndlr (b, ffffffff7c3f6320, ffffffff7c3f6010, 11c73fd78, 0, 7fffff224000) + c
00007fffff0d0044 call_user_handler (9, ffffffff7c3f6320, 0, 871e0850, b, ff) + 404
00007fffff0d0428 sigacthandler (b, ffffffff7c3f6320, ffffffff7c3f6010, 0, 0, 7fffff224000) + a8
--- called from signal handler with signal 11 (SIGSEGV) ---
00007ffffefed910 strlen (0, 112069bf8, 13d1bd2d0, ffffffff7c3f7298, 1000, ffffffff7c3f6e88) + 50
0000000115b04ea8 ddl_ex_prepare_qstr (ffffffff7c3f7298, 1000, ffffffff7c3f6e88, 13d13d3b0, 10d7f438, 10d7f400) + 78
0000000116fd5a90 _ddl_verify_password2 (ffffffff7dd03e68, ffffffff7dd03af0, ffffffff7dd03bc0, 3200010100, 0, 0) + 37c0
0000000116feee2c ddl_create_user (1ffff415483988, 0, 13d13d288, 0, 12c3bdf78, 0) + 2fdc
0000000115df67c8 ddl_execute (ffffffff7dd022a8, 10d7f310, 0, 13d129300, ffffffffffffffd0, 10d6b388) + 128
0000000115df1528 ddl_process_internal (0, 0, 1ffff4077a0090, 0, 152, 12c3bdf78) + 2568
000000011303cbc0 tbsvr_sql_process (13d200fa0, ffffffff7dd022a8, 0, ffffffff7c401d58, ffffffff7c401dc7, ffffffff7c401db8) + 2250
0000000112eb1d6c tbsvr_msg_sql_common (ffffffff7c4020c7, 1ffff415483988, 3, 7c00, 0, 12c3bdf78) + 522c
0000000112e09d40 tbsvr_handle_msg_internal (0, 0, ffffffff7d41a668, 13d13d288, 1, 6) + 22f0
0000000112e0df30 tbsvr_wthr_request_from_cl_conn (13d200fa0, 0, 12c3bdf78, 1ffff4077a0090, ffffffffffffffd8, 10d7f310) + 2478
0000000112e02348 tbsvr_body (13d13d288, 10d7f310, 12c3bdf78, 10d7f000, 12c3bdf78, 81) + 40
0000000112e1db64 wthr_get_new_cli_con (a3b4400, 0, 1ffff41549d4e0, 104b4f9e8, ffffffff7f470a50, 12c3bdf78) + 10dc
0000000112ddcff0 thread_main_chk_bitmask (ffffffffffffffff, 1, 0, 10000, fffffffffffeffff, 0) + 5b8
0000000112e00c0c svr_wthr_main_internal (152, 10d6b388, 10d6b000, 152, 48f, 48f) + c7b4
00000001121a8078 svr_wthr_main (0, ffffffffffffffc0, 12c3bdf78, 0, 10d6b000, ffffffff7f470a58) + 28
000000011c69feac wthr_init (ffffffff7ec05078, 1ffff41549d4e0, 0, 1ffff4008b96b0, 12c3bdf78, 8b8a60) + 1d4

 

 

Cause

When entering an encrypted password, the verify password function runs with that value as is to perform password verification, and this occurs if the result is an abnormal value outside the normal range.
 

 

Solutions

Apply the patch to resolve the issue. (Patch applied: 317319)

Caution
Apply the patch through technical support provided by TmaxTibero. 
Note
  • Even if you create a password encrypted like IDENTIFIED BY VALUES 'UhzYkQClcFLoJOWQdqw3zA==', SIGSEGV may intermittently occur, so even without applying the patch, it may work normally after multiple attempts.
  • Instead of applying the patch, you can try creating with the password before encryption using IDENTIFIED BY 'password' format.

 

 

 

 

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