Public bug reported:
Description:
Failed to install Ubuntu 24.04 on a DL380a Gen12 with Intel Sierra Forest 2P +
NVidia L40 GPU in slot17.
There is a random write to VF BAR0's memory region that causes the
kernel got MCE error.
Version-Release number :
Ubuntu 24.04
How reproducible:
Each time
Steps to reproduce
- PCI segment, Intel VT-d and SR-IOV , all enabled in the BIOS
- Run a fresh install on a DL380a server with 2P with GPU (NVidia L40) in slot17
Expected results
No MCE and run installation w/o problem
Actual results
The kernel got MCE errors.
Additional info:
We have tracked this issue with RHEL9.4, it's caused by the following
pathes.
cb4a6ccf3583 perf/x86/intel/uncore: Support Sierra Forest and Grand Ridge
(v6.8-rc1)
388d76175bd9 perf/x86/intel/uncore: Support IIO free-running counters on GNR
(v6.8-rc1)
632c4bf6d007 perf/x86/intel/uncore: Support Granite Rapids (v6.8-rc1)
b560e0cd882b perf/x86/uncore: Use u64 to replace unsigned for the uncore
offsets array (v6.8-rc1)
cf35791476fc perf/x86/intel/uncore: Generic uncore_get_uncores and MMIO format
of SPR (v6.8-rc1)
** Affects: mdadm (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2078917
Title:
Ubuntu 24.04 - It cannot be installed with DL380a Gen12 (2P, SRF-SP)
+ NVidia L40 GPU in slot17
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