kernel security and bug fix update

[2.6.18-53.1.21.0.1.el5]

• [NET] Add entropy support to e1000 and bnx2 (John Sobecki) [ORA 6045759]
• [NET] Fix msi issue with kexec/kdump (Michael Chan) [ORA 6219364]
• [MM] Fix alloc_pages_node() static ‘nid’ race made kernel crash (Joe Jin) [ORA 6187457]
• [splice] Fix bad unlock_page() in error case (Jens Axboe) [ORA 6263574]
• [dio] fix error-path crashes (Linux Torvalds) [ORA 6242289]
  [2.6.18-53.1.21.el5]
• [misc] infinite loop in highres timers (Michal Schmidt ) [440001]
• [video] PWC driver DoS (Pete Zaitcev ) [308521]
• [x86_64] fix unprivileged crash on %cs corruption (Jarod Wilson ) [439787]
• [net] ESP: ensure IV is in linear part of the skb (Thomas Graf ) [427247]
• [cpufreq] booting with maxcpus=1 panics (Doug Chapman ) [429516]
• [net] sunrpc: lockd recovery is broken (Steve Dickson ) [445360]
• [cpufreq] don’t take sem in cpufreq_quick_get (Doug Chapman ) [400821]
• [cpufreq] remove hotplug cpu cruft (Doug Chapman ) [400821]
• [cpufreq] governor: use new rwsem locking in work cb (Doug Chapman ) [400821]
• [cpufreq] ondemand governor restructure the work cb (Doug Chapman ) [400821]
• [cpufreq] rewrite lock to eliminate hotplug issues (Doug Chapman ) [400821]
  [2.6.18-53.1.20.el5]
• [misc] fix softlockup warnings/crashes (Chris Lalancette ) [444402]