device_dax - probe of daxX.0 failed with error -16

This document (000021201) is provided subject to the disclaimer at the end of this document.


SUSE Linux Enterprise Server 15 SP5


When Intel HBM CPU is set to flat mode, the following device_dax errors can be observed with dmesg:
[ 30.830305] device_dax: probe of dax2.0 failed with error -16
[ 30.830339] device_dax: probe of dax3.0 failed with error -16
'daxctl list -u' also lists duplicate entries for each node.


The kernel update released July/2023, (kernel version 5.14.21-150500.55.7.1 ) includes the patch to resolve the problem.


The issue is caused by a duplicate 'hmem' device registration.


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  • Document ID:000021201
  • Creation Date: 11-Sep-2023
  • Modified Date:20-Sep-2023
    • SUSE Linux Enterprise Server

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