Re: lock order reversals - what do they mean?
"Christoph P. Kukulies" <[email protected]>
| Newsgroups | gmane.os.freebsd.current,gmane.os.freebsd.devel.mobile |
|---|---|
| Message-ID | <[email protected]> |
On Sun, Dec 14, 2003 at 12:34:59PM -0500, Robert Watson wrote: > > On Sun, 14 Dec 2003, C. Kukulies wrote: > > > I'm getting > > lock order reversal > > 1st 0xc09524c0 UMA lock (UMA lock) @ /u/src/sys/vm/uma_core.c:1200 > > 2nd 0xc1431100 system map (system map) @ /u/src/sys/vm/vm_map.c:2210 > > Stack backtrace: > > > > This happenend while doing a find . something on my notebook hd. > > These warnings are generated by Witness, a run-time lock diagnostic system > found in FreeBSD 5-CURRENT kernels (but removed in releases). You can > read more about Witness in the WITNESS(4) man page, which talks about its > capabilities. Among other things, Witness performs run-time lock order > verification using a combination of hard coded lock orders, and run-time Thanks for the information. -- Chris Christoph P. U. Kukulies kuku_at_physik.rwth-aachen.de _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "[email protected]"