Oracle® Linux

Release Notes for Unbreakable Enterprise Kernel Release 4 Update 7

Oracle Legal Notices
Oracle Documentation License

E94694-03

March 2019


Table of Contents

Preface
1 New Features, Bug Fixes and Notable Changes
1.1 Notable Changes
1.2 RDS Improvements
1.3 DTrace Improvements
1.4 KVM Improvements
1.5 File System Improvements
1.6 Driver Updates
1.7 Technology Preview
1.8 Compatibility
1.9 Header Packages for Development
2 Security Fixes for CVEs
2.1 List of CVEs fixed in this release
3 Known Issues
3.1 dmi: Firmware registration failure message in dmesg output
3.2 i40e driver can cause a system hang when a high number of VFs are created
3.3 KVM guests with less than 4 GB of memory might fail to auto reserve crash kernel memory
3.4 btrfs, ext4 and xfs: Kernel panic when freeze and unfreeze operations are performed in multiple threads
3.5 btrfs Issues
3.6 ext4 Issues
3.7 xfs Issues
3.8 DIF/DIX is not supported for ext file systems
3.9 Console appears to hang when booting
3.10 Docker Issues
3.11 DTrace Issues
3.12 Error, some other host already uses address xxx.xxx.xxx.xxx
3.13 Increased dom0 memory requirement when using Mellanox HCAs on Oracle VM Server
3.14 LXC Issues
3.15 Kdump fails to produce a vmcore file on systems running Oracle Linux 6 and using an Oracle NVMe PCIe 3.0 Switch Card V2
3.16 NVMe devices not found under the /dev directory after PCI rescan
3.17 OFED iSER target login fails from an initiator on Oracle Linux 6
3.18 Open File Description (OFD) locks are not supported on NFSv4 mounts
3.19 Oracle VM Server MSI-X interrupt allocation failure for 16 GB QLogic FC HBA
3.20 Possible kernel crash during manual unloading of QLogic FC HBA driver module
3.21 RDMA service is not set to start at boot time
3.22 SDP performance degradation
3.23 Shared Receive Queue (SRQ) is an experimental feature for RDS and is disabled by default
3.24 Unloading or removing the rds_rdma module is unsupported
4 Installation and Availability
4.1 Installation Overview
4.2 Subscribing to ULN Channels
4.3 Enabling Access to Oracle Yum Repositories
4.4 Upgrading Your System
4.5 Installing the Oracle-Supported OFED Packages