[ELSA-2016-0715] kernel security, bug fix, and enhancement update

[2.6.32-573.26.1]
- [kernel] revert 'sched: core: Use hrtimer_start_expires' (Jiri Olsa) [1326043 1324318]
- [kernel] Revert 'Cleanup bandwidth timers' (Jiri Olsa) [1326043 1324318]
- [kernel] revert 'fair: Test list head instead of list entry in throttle_cfs_rq' (Jiri Olsa) [1326043 1324318]
- [kernel] revert 'sched, perf: Fix periodic timers' (Jiri Olsa) [1326043 1324318]
- [kernel] Revert 'fix KABI break' (Jiri Olsa) [1326043 1324318]

[2.6.32-573.25.1]
- [x86] nmi/64: Fix a paravirt stack-clobbering bug in the NMI code (Denys Vlasenko) [1259580 1259581] {CVE-2015-5157}
- [x86] nmi/64: Switch stacks on userspace NMI entry (Denys Vlasenko) [1259580 1259581] {CVE-2015-5157}
- [fs] anon_inodes implement dname (Aristeu Rozanski) [1322707 1296019]
- [fs] xfs: Avoid pathological backwards allocation (Bill O'Donnell) [1320031 1302777]
- [net] sctp: Prevent soft lockup when sctp_accept() is called during a timeout event (Jacob Tanenbaum) [1297421 1297422] {CVE-2015-8767}
- [net] udp: move logic out of udp[46]_ufo_send_check (Sabrina Dubroca) [1319276 1299975]
- [net] af_unix: Guard against other == sk in unix_dgram_sendmsg (Jakub Sitnicki) [1315696 1309241]
- [md] raid10: don't clear bitmap bit when bad-block-list write fails (Jes Sorensen) [1320863 1273546]
- [md] raid1: don't clear bitmap bit when bad-block-list write fails (Jes Sorensen) [1320863 1273546]
- [md] raid10: submit_bio_wait returns 0 on success (Jes Sorensen) [1320863 1273546]
- [md] raid1: submit_bio_wait() returns 0 on success (Jes Sorensen) [1320863 1273546]
- [md] crash in md-raid1 and md-raid10 due to incorrect list manipulation (Jes Sorensen) [1320863 1273546]
- [md] raid10: ensure device failure recorded before write request returns (Jes Sorensen) [1320863 1273546]
- [md] raid1: ensure device failure recorded before write request returns (Jes Sorensen) [1320863 1273546]

[2.6.32-573.24.1]
- [sched] fix KABI break (Seth Jennings) [1314878 1230310]
- [sched] fair: Test list head instead of list entry in throttle_cfs_rq (Seth Jennings) [1314878 1230310]
- [sched] sched,perf: Fix periodic timers (Seth Jennings) [1314878 1230310]
- [sched] sched: debug: Remove the cfs bandwidth timer_active printout (Seth Jennings) [1314878 1230310]
- [sched] Cleanup bandwidth timers (Seth Jennings) [1314878 1230310]
- [sched] sched: core: Use hrtimer_start_expires (Seth Jennings) [1314878 1230310]
- [sched] fair: Fix unlocked reads of some cfs_b->quota/period (Seth Jennings) [1314878 1230310]
- [sched] Fix potential near-infinite distribute_cfs_runtime loop (Seth Jennings) [1314878 1230310]
- [sched] fair: Fix tg_set_cfs_bandwidth deadlock on rq->lock (Seth Jennings) [1314878 1230310]
- [sched] Fix hrtimer_cancel/rq->lock deadlock (Seth Jennings) [1314878 1230310]
- [sched] Fix cfs_bandwidth misuse of hrtimer_expires_remaining (Seth Jennings) [1314878 1230310]
- [sched] Refine the code in unthrottle_cfs_rq (Seth Jennings) [1314878 1230310]
- [sched] Update rq clock earlier in unthrottle_cfs_rq (Seth Jennings) [1314878 1230310]
- [block] Fix q_suspended logic error for io submission (David Milburn) [1314209 1227342]
- [block] nvme: No lock while DMA mapping data (David Milburn) [1314209 1227342]
- [netdrv] ixgbe: finish ixgbe: Update ixgbe to use new vlan accleration (John Greene) [1315706 1249244]

[2.6.32-573.23.1]
- [x86] perf: Add more Broadwell model numbers (Jiri Olsa) [1320035 1242694]
- [perf] perf/x86/intel: Remove incorrect model number from Haswell perf (Jiri Olsa) [1320035 1242694]