[freetds] Segmentation fault when concurrently opening database connections

Joshua Moore-Oliva josh at chatgris.com
Mon Apr 19 16:51:22 EDT 2004


When I concurrently open connections (one per thread), I get a segfault while executing the dbopen function.

it occurs here

Thread 3:
==22112== Invalid read of size 4
==22112==    at 0x4032B1C3: tds_get_homedir (in /usr/lib/libsybdb.so.4.0)
==22112==  Address 0x14 is not stack'd, malloc'd or free'd
==22112==
==22112== Process terminating with default action of signal 11 (SIGSEGV): dumping core
==22112==  Address not mapped to object at address 0x14
==22112==    at 0x4032B1C3: tds_get_homedir (in /usr/lib/libsybdb.so.4.0)

However, this behaviour does not present itself if the dbopen function call is protected by a mutex..

Joshua Moore-Oliva



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