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  1. Bug #1755627
  2. Comment #19

Comment 19 for bug 1755627

Revision history for this message
daniel CURTIS (anoda) wrote :

Hello.

Yes, Mr. Kamal Mostafa is right. Linux kernel v4.4.0-123.147 will contain a fix for all of these issues with, for example, '/var/log/syslog' flooding with 'ibrs_dump', 'use_ibrs/ibpb' and 'sysctl_ibrs{,ibpb}_enabled' entries. Now, a "proposed" kernel is v4.4.0-122.146 with a fix for "Redpine: WiFi scan stopping issue observed with BLE (LP: #1757435)".

Anyway, next kernel version, mentioned above will be updated, at last, to the v4.4.128 stable release (current version, available e.g. in 16.04 LTS is v4.4.117) and will contain this patch, of course:

* ibrs/ibpb fixes result in excessive kernel logging (LP: #1755627)
  - SAUCE: remove ibrs_dump sysctl interface

So, we have to wait a little more, because so-called "master-next" branch (with all needed patches for already mentioned v4.4.128 Stable release) was updated only 24 hours ago. Additionally, there will be also a couple of 'x86/spectre' and 'x86/retpoline' patches (mainly in v4.4.118).

Thanks, best regards.