db2diag.log reports following error:
2018-07-31-16.43.57.183345+480 I333558187A369 LEVEL: Severe
PID : 15139118 TID : 1543 PROC : db2sysc 60
INSTANCE: myID NODE : 060
EDUID : 1543 EDUNAME: db2fcmr 60
FUNCTION: DB2 UDB, fast comm manager,
sqkfChannel::DeliverInboundBuffer, probe:15
MESSAGE : Invalid Sequence No. Detected = 1. Expected No. = 2
2018-07-31-16.43.57.183328+480 I333558557A1565 LEVEL: Severe
PID : 42009450 TID : 1543 PROC : db2sysc 59
INSTANCE: myID NODE : 059
EDUID : 1543 EDUNAME: db2fcmr 59
FUNCTION: DB2 UDB, SQO Latch Tracing,
sqlo_xlatch::releaseConflict, probe:10
DATA #?1 : String, 27 bytes
unlocking an unlatched lock
DATA #?2 : Pointer, 8 bytes
0x07800000b0dd4ca0
DATA #?3 : String, 117 bytes
{
lock = { 0x00000000 [ unlocked ] }
identity = sqkfRecvLockManager::sqkfRecvLockManager (103)
}
DATA #?4 : Hexdump, 8 bytes
0x07800000B0DD4CA0 : 0000 0000 0067 0000
.....g..
CALLSTCK: (Static functions may not be resolved correctly, as
they are resolved to the nearest symbol)
[0] 0x090000001EB05C6C pdLog + 0xF8
[1] 0x090000001B0A8904 pdLog@glue415 + 0x12C
[2] 0x090000001B05321C sqloSpinLockReleaseConflict + 0x5C
[3] 0x090000001E9162AC sqloSpinLockReleaseConflict@glue73 +
0x78
[4] 0x090000001BE64F34
DeliverInboundBuffer__11sqkfChannelFP10sqkfBufferP17SQLKF_SESSIO
N_HDLP18SQLZ_PDB_UNIQUE_IDP15sql_static_data + 0x4A4
[5] 0x090000001B638BEC
DeliverBufferToTargetChannel__19sqkfFastCommManagerFP10sqkfBuffe
riN2217SQLKF_CHANNEL_PRIP17SQLKF_SESSION_HDLP15sqkfSendConduit +
0x84
[6] 0x090000001AA59B78
RouteInboundBuffer__19sqkfFastCommManagerFRP10sqkfBufferP17SQLKF
_SESSION_HDLiT3 + 0x6A0
[7] 0x090000001BAC2D98 HandleDataEvent__15sqkfRecvConduitFUl +
0xCA0
[8] 0x090000001BAC1BC0 RunEDU__15sqkfRecvConduitFv + 0xEC0
[9] 0x090000001E82D9BC EDUDriver__9sqzEDUObjFv + 0xE4
In certain case, a FastCommManager claimed the channel and
put it in its receive table and at same time the channel is
pointing to another FastCommManager. This may also come with
double free of a channel. |
