Experimental Physics and
| |||||||||||||||
|
at least on all EPICS releases 3.13.2 to 3.13.9, is a bug that causes crashes on PPC iocs. (I have not seen a 68k crash here.) Bug: When reading the DTYP field of "pure soft records" such as calc via CA, the CA_client task crashes and leaves the ioc in a state where no further access via CA is possible. data access Exception current instruction address: 0x01705f54 Machine Status Register: 0x0000b030 Data Access Register: 0xf0f0f0f0 Condition Register: 0x28000040 Data storage interrupt Register: 0x40000000 Task: 0x17c31f0 "CA_client" > tt 17807c vxTaskEntry +60 : camsgtask () 1727a44 camsgtask +2e4: camessage () 172a7f0 camessage +120: read_action () 17286bc read_action +e8 : read_reply () 17284b4 read_reply +144: db_get_field () 171f838 .L198 +40 : dbGetField () 1707650 dbGetField +164: dbGet () 1707760 dbGet +cc : getOptions () 17065d8 getOptions +208: get_enum_strs () Fix: *** base/src/db/dbAccess.c.orig Thu Jun 3 18:04:26 2004 --- base/src/db/dbAccess.c Thu Jun 3 18:10:33 2004 *************** *** 129,134 **** --- 129,138 ---- goto choice_common; case DBF_DEVICE: pdbDeviceMenu = (dbDeviceMenu *)pdbFldDes->ftPvt; + if (pdbDeviceMenu == NULL) { + no_str = 0; + goto choice_common; + } no_str = pdbDeviceMenu->nChoice; papChoice = pdbDeviceMenu->papChoice; goto choice_common; After this fix, calc records and the like report DTYP as 0. Dirk -- Dr. Dirk Zimoch Swiss Light Source Paul Scherrer Institut Computing and Controls phone +41 56 310 5182 fax +41 56 310 4413
| ||||||||||||||
ANJ, 10 Aug 2010 |
·
Home
·
News
·
About
·
Base
·
Modules
·
Extensions
·
Distributions
·
Download
·
· Search · EPICS V4 · IRMIS · Talk · Bugs · Documents · Links · Licensing · |