>> Rebooted my home server into a new kernel and got a hard system lockup >> and a bunch of "kernel: BUG: scheduling while atomic" in >> /var/log/messages. The culprits seem to be nvidia-352.30 drivers from >> elrepo. Downgrading to 352.21 solved the problem. > > which centos version? > > which kernel? > > which nvidia card? > > what is bug report number? CentOS 6.6, fully updated. This is not a kernel problem. The system freezes with both kernel-2.6.32-504.23.4.el6.x86_64 and kernel-2.6.32-504.30.3.el6.x86_64. GPU: GeForce GTX 650. No bug has been filed yet.