Hi, > Hmm.. isn't this the ldisc bug that was discussed a few months ago on this list, > and a patch was applied to virt-sig kernel aswell? > > Call trace looks similar.. Good memory! I'd forgotten about that despite being the one who ran into it. Looks like that patch was just removed in 4.9.75-30 which I just upgraded this system to: http://cbs.centos.org/koji/buildinfo?buildID=21122 Previously I was on 4.9.63-29 which does not have this problem, and does have the ldisc patch. So I guess the question is for Johnny, why was it removed? In the meantime, I'll revert the kernel and follow up if I see any further problems. Cheers, Nathan