DB2 FOR LUW / DB2FORLUW / B10 - DB2

Customer reproduces SEGV in memcpy at regular basis with the
following stack:

0x00007FC20A83FCA6 ossDumpStackTraceInternal(unsigned long,
OSSTrapFile&, int, siginfo*, void*, unsigned long, unsigned
long) + 0x0356
0x00007FC20A83F8EB ossDumpStackTraceV98 + 0x002b
0x00007FC20A83BAD7 OSSTrapFile::dumpEx(unsigned long, int,
siginfo*, void*, unsigned long) + 0x00d7
0x00007FC2120A45E7 sqlo_trce + 0x03c7
0x00007FC21221063B sqloEDUCodeTrapHandler + 0x03cb
0x0000003F2320F7E0 address: 0x0000003F2320F7E0 ; dladdress:
0x0000003F23200000 ; offset in lib: 0x000000000000F7E0 ;
0x000000000042D490 __intel_ssse3_rep_memcpy + 0x2960
0x00007FC2126EFB54 sqlqgrelsc(int, int, sqlr_token*) + 0x0174
0x00007FC2126EFEC5 sqlqgrerdc(char const*, int, int,
sqlr_token*) + 0x0185
0x00007FC2126F1248 sqlqgError(char*, int, int, ...) + 0x0198
0x00007FA5B27288CC
FencedDRDA_Server::initialize_my_server(Server_Info*) + 0x020c
0x00007FC2127AE0A2
FencedRelational_Server::initialize_server(Server_Info*, int) +
0x01a2
0x00007FC212764C60 Wrapper::get_server(unsigned char*,
Server_Info*, int*) + 0x00a0
0x00007FC2127A7ABC sqlqg_FMP_FindServer(unsigned char*,
sqlqg_FMP_Request*, FencedServer**) + 0x039c
0x00007FC212798738 sqlqgRouter(sqlqg_FMP_Request*,
sqlqg_FMP_Reply**, sqlri_ufob*) + 0x0188
0x00007FA5B29CD0B2 sqlqg_fedstp_hook + 0x0082
0x00007FC2126EF1F7 sqlqgDyload(sqlri_ufob*) + 0x00f7
0x00007FC213003370 sqlriFedInvokeInvoker(sqlri_ufob*,
sqlqg_Fmp_Info*) + 0x0640
0x00007FC212757656 sqlqg_Call_FMP_Thread(sqlqg_FMP_Request*,
sqlqg_FMP_Reply**) + 0x0266
0x00007FC212745C25 sqlqgFedStart(UnfencedServer*, char, bool*) +
0x0cb5
0x00007FC21273E564 sqlqgCreateNickInfo(Nickname_Info*,
Nickname_Info**) + 0x0134
0x00007FC212725304 sqlqgRegisterNickname(Nickname_Info*) +
0x0114
0x00007FC213424849 sqlrlc_fed_fetch_3pn_pd(sqlrr_cb*, unsigned
char*, unsigned short, unsigned char*, unsigned short, unsigned
char*, unsigned short, void**) + 0x06d9
0x00007FC2133F4401 sqlrlc_fed_load_entry(sqlrr_cb*,
sqlrlc_entry_fed*, unsigned int, unsigned int, unsigned int,
unsigned int*) + 0x02d1
0x00007FC2133F39B3 sqlrlc_load_entry(sqlrr_cb*,
sqlrlc_entry_common*, unsigned int, unsigned int, unsigned int,
unsigned int*) + 0x0093

In db2diag.log:
2019-08-08-12.52.57.745419+120 I83989275E619         LEVEL:
Error
PID     : 25617                TID : 140467215787776 PROC :
db2sysc 0
INSTANCE: db2inst4             NODE : 000            DB   :
UNLSULY2
APPHDL  : 0-4020               APPID:
10.158.37.174.65206.190808113428
AUTHID  : DNLSULY              HOSTNAME: db-db2hh1cv0103t
EDUID   : 5176                 EDUNAME: db2agent (UNLSULY2) 0
FUNCTION: DB2 UDB, base sys utilities, sqleagnt_sigsegvh,
probe:1
MESSAGE : Error in agent servicing application with coor_node:
DATA #1 : Hexdump, 2 bytes
0x00007FC11240F692 : 0000
..

2019-08-08-12.52.57.745846+120 I83989895E626         LEVEL:
Error
PID     : 25617                TID : 140467215787776 PROC :
db2sysc 0
INSTANCE: db2inst4             NODE : 000            DB   :
UNLSULY2
APPHDL  : 0-4020               APPID:
10.158.37.174.65206.190808113428
AUTHID  : DNLSULY              HOSTNAME: db-db2hh1cv0103t
EDUID   : 5176                 EDUNAME: db2agent (UNLSULY2) 0
FUNCTION: DB2 UDB, base sys utilities, sqleagnt_sigsegvh,
probe:2
MESSAGE : Error in agent servicing application with
coor_agent_index:
DATA #1 : Hexdump, 2 bytes
0x00007FC11240F690 : B40F
..

****************************************************************
* USERS AFFECTED:                                              *
* ALL                                                          *
****************************************************************
* PROBLEM DESCRIPTION:                                         *
* See Error Description                                        *
****************************************************************
* RECOMMENDATION:                                              *
* Upgrade to Db2 11.1 Mod 4 Fixpack 5 or higher                *
****************************************************************

not known / see Local fix

Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :

28.08.2019
20.01.2020
20.01.2020