Unbreakable Enterprise kernel-container security update

[4.14.35-2047.503.1.el7]

• bpf, x86: Validate computation of branch displacements for x86-64 (Piotr Krysiuk) [Orabug: 32759961] {CVE-2021-29154}
• uek-rpm: Add Amazon Elastic Network Adapter module to nano rpm. (Somasundaram Krishnasamy) [Orabug: 32781585]
• ext4: handle error of ext4_setup_system_zone() on remount (Jan Kara) [Orabug: 32656590] {CVE-2021-3428}
  [4.14.35-2047.503.0.el7]
• tcp: do not mess with cloned skbs in tcp_add_backlog() (Eric Dumazet) [Orabug: 32660047]
• iommu/amd: Set DTE[IntTabLen] to represent 512 IRTEs (Suravee Suthikulpanit) [Orabug: 32640437]
• iommu/amd: Increase interrupt remapping table limit to 512 entries (Suravee Suthikulpanit) [Orabug: 32640437]
• rds: ib: move statistics counting from caller to callee in rds_ib_recv_refill (Hakon Bugge) [Orabug: 32702021]
• uek-rpm: Enable IRQ time accounting option for UEK5 (Saeed Mirzamohammadi) [Orabug: 32733985]
• btrfs: fix race when cloning extent buffer during rewind of an old root (Filipe Manana) [Orabug: 32669453] {CVE-2021-28964}
• perf/x86/intel: Fix a crash caused by zero PEBS status (Kan Liang) [Orabug: 32669472] {CVE-2021-28971}
• xen-blkback: don’t leak persistent grants from xen_blkbk_map() (Jan Beulich) [Orabug: 32697854] {CVE-2021-28688}
• ocfs2: fix deadlock between setattr and dio_end_io_write (Wengang Wang) [Orabug: 32545320]
• rds: Add code to debug rds_tcp loopback hang (Rao Shoaib) [Orabug: 32422982]
• bpf: Add sanity check for upper ptr_limit (Piotr Krysiuk) [Orabug: 32656764] {CVE-2020-27170} {CVE-2020-27171}
• bpf: Simplify alu_limit masking for pointer arithmetic (Piotr Krysiuk) [Orabug: 32656764] {CVE-2020-27170} {CVE-2020-27171}
• bpf: Prohibit alu ops for pointer types not defining ptr_limit (Piotr Krysiuk) [Orabug: 32656764] {CVE-2020-27170} {CVE-2020-27171}
• netfilter: x_tables: Use correct memory barriers. (Mark Tomlinson) [Orabug: 32709123] {CVE-2021-29650}
• netfilter: x_tables: make xt_replace_table wait until old rules are not used anymore (Florian Westphal) [Orabug: 32709123] {CVE-2021-29650}