I have finally found what caused Jaybird 3.0 to crash Firebird 2.1.7
with about a 100% success rate.
When detaching from a database, I refrained from reading the response to
op_detach (as I thought this would be irrelevant as the connections is
going to get closed anyway). Doing this causes Firebird 2.1.7 to crash
(SuperServer, 64 bit, on windows 10; haven't tested other platforms).
This doesn't always happen immediately, sometimes it requires multiple
attach/detach cycles.
I know that Firebird 2.1.7 is EOL, but maybe this is a serious enough
denial of service bug to consider releasing a security update.
The specific case I used includes creating and dropping a database, so I
am not entirely sure that just attaching and detaching is sufficient.
Specifically I used:
public class FB21Crash {
private static final int RETRY_LIMIT = 10;
@Test
public void tryCrash() throws Exception {
int remaining = RETRY_LIMIT;
do {
System.out.println("Attempts remaining " + remaining--);
FBManager fbManager = new
FBManager(FBTestProperties.getGdsType());
FBTestProperties.defaultDatabaseSetUp(fbManager);
FBTestProperties.defaultDatabaseTearDown(fbManager);
} while (remaining > 0);
}
}
--
Mark Rotteveel
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