[ELSA-2011-0303] kernel security and bug fix update

[2.6.18-238.5.1.0.1.el5]
- [scsi] fix scsi hotplug and rescan race [orabug 10260172]
- fix filp_close() race (Joe Jin) [orabug 10335998]
- fix missing aio_complete() in end_io (Joel Becker) [orabug 10365195]
- make xenkbd.abs_pointer=1 by default [orabug 67188919]
- [xen] check to see if hypervisor supports memory reservation change
(Chuck Anderson) [orabug 7556514]
- [net] Enable entropy for bnx2,bnx2x,e1000e,igb,ixgb,ixgbe,ixgbevf (John Sobecki)
[orabug 10315433]
- [NET] Add xen pv netconsole support (Tina Yang) [orabug 6993043] [bz 7258]
- [mm] shrink_zone patch (John Sobecki,Chris Mason) [orabug 6086839]
- fix aacraid not to reset during kexec (Joe Jin) [orabug 8516042]
- [rds] Patch rds to 1.4.2-20 (Andy Grover) [orabug 9471572, 9344105]
RDS: Fix BUG_ONs to not fire when in a tasklet
ipoib: Fix lockup of the tx queue
RDS: Do not call set_page_dirty() with irqs off (Sherman Pun)
RDS: Properly unmap when getting a remote access error (Tina Yang)
RDS: Fix locking in rds_send_drop_to()
- [qla] fix qla not to query hccr (Guru Anbalagane) [Orabug 8746702]
- [nfs] too many getattr and access calls after direct I/O [orabug 9348191]
- [xen] PVHVM guest with PoD crashes under memory pressure (Chuck Anderson)
[orabug 9107465]
- [xen] PV guest with FC HBA hangs during shutdown (Chuck Anderson)
[orabug 9764220]
- Support 256GB+ memory for pv guest (Mukesh Rathor) [orabug 9450615]
- fix overcommit memory to use percpu_counter for el5 (KOSAKI Motohiro,
Guru Anbalagane) [orabug 6124033]
- [ipmi] make configurable timeouts for kcs of ipmi [orabug 9752208]
- [ib] fix memory corruption (Andy Grover) [orabug 9972346]
- [aio] patch removes limit on number of retries (Srinivas Eeda) [orabug 10044782]
- [loop] Do not call loop_unplug for not configured loop device (orabug 10314497)

[2.6.18-238.5.1.el5]
- [x86_64] vdso: fix gtod via export of sysctl_vsyscall (Prarit Bhargava) [678613 673616]

[2.6.18-238.4.1.el5]
- [net] be2net: fix missing trans_start update (Ivan Vecera) [674273 671595]
- [net] fix unix socket local dos (Neil Horman) [656759 656760] {CVE-2010-4249}
- [net] core: clear allocs for privileged ethtool actions (Jiri Pirko) [672432 672433] {CVE-2010-4655}
- [net] limit socket backlog add operation to prevent DoS (Jiri Pirko) [657308 657309] {CVE-2010-4251}
- [block] fix accounting bug on cross partition merges (Jerome Marchand) [672253 646816]
- [char] virtio: Wake console outvq on host notifications (Amit Shah) [673983 673459]
- [char] virtio: make console port names a KOBJ_ADD event (Amit Shah) [673984 669909]

[2.6.18-238.3.1.el5]
- [net] tcp: fix shrinking windows with window scaling (Jiri Pirko) [669300 627496]
- [virt] xen: no enable extended PCI cfg space via IOports (Don Dutile) [671340 661478]
- [net] e1000: Avoid unhandled IRQ (Dean Nelson) [670807 651512]
- [net] e1000: fix screaming IRQ (Dean Nelson) [670807 651512]

[2.6.18-238.2.1.el5]
- [acpi] bus: check if list is empty before kfree()ing it (Matthew Garrett) [670797 670373]
- [net] ipv6: fragment local tunnel IPSec6 pkts if needed (Herbert Xu) [670824 661110]
- [block] cciss: fix null pointer problem in tur usage (Tomas Henzl) [668976 664592]