On 08/16/2011 11:55 PM, Thomas Bächler wrote: > Am 16.08.2011 23:44, schrieb Milan Broz: >> On 08/16/2011 10:45 PM, Thomas Bächler wrote: >>> I am getting reports of this error again: >>> >>> semid 491524: semop failed for cookie 0xd4dc159: incorrect semaphore state >>> Failed to set a proper state for notification semaphore identified by >>> cookie value 223199577 (0xd4dc159) to initialize waiting for incoming >>> notifications. >>> >>> This issue is so weird that I don't know where to start. Apparently, >>> this problem appears whenever chromium is running, and disappears when >>> you quit chromium. I'm confused about this. Very confused. >> >> I know that this bug is still there. I think that the problem is: >> >> - kernel, in response to devmapper library request, send uevent with cookie >> - kernel reports failure (despite uevent was sent), I guess it is >> some memory allocation error later >> - libdevmapper takes error path, destroying semaphore, which was already >> destroyed in udev rules >> >> So my guess is that connection with chromium just it perhaps allocates most >> of system memory and some allocation in kernel perhaps fail then. > > Then this would probably be reproducible with other programs, too. So > far, the connection has been only made with chromium. I would love to > find another test case though. Well, this is the most strange report so far. If more people can reproduce it, there must be a connection. Isn't chromium using system semaphores intensively? (I have no idea.) What says "ipcs -s" (with and without chromium running)? Will increasing number of system semaphores help (first number)? sysctl -a |grep sem Can you try to increase it to 1000 for example sysctl -w kernel.sem=1000 > >> The final state should be correct, so you can (I hope) ignore that error >> for now. > > Don't the LUKS commands abort after this error? (Don't remember). It should not. Milan _______________________________________________ dm-crypt mailing list dm-crypt@xxxxxxxx http://www.saout.de/mailman/listinfo/dm-crypt
