RHBA-2018:2208 - Bug Fix Advisory

Topic

Updated dracut packages that fix one bug are now available for Red Hat Enterprise Linux 7.2 Advanced Update Support.

Description

The dracut packages contain an event-driven initial RAM file system (initramfs) generator infrastructure based on the udev device manager. The virtual file system, initramfs, is loaded together with the kernel at boot time and initializes the system, so it can read and boot from the root partition.

This update fixes the following bug:

• Previously, when the /proc/module file was read during a boot stage to find the modules that needed to be present in the kdump initial RAM disk (initrd), the file occasionally got into an inconsistent state. This situation happened when certain modules were still being loaded to the system and the file was at the same time being read by the dracut utility. As a consequence, some modules important for getting a core dump were missing. This update adds auxiliary logic so that dracut reads the /proc/modules file in its entirety. As a result, the kdump initrd always contains the modules that are needed to perform a core dump. (BZ#1589759)

Users of dracut are advised to upgrade to these updated packages, which fix this bug.

Solution

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Enterprise Linux Server - AUS 7.2 x86_64
• Red Hat Enterprise Linux Server - TUS 7.2 x86_64
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 7.2 x86_64

Fixes

CVEs

(none)

References

(none)