Aligning status to LP 1876765.
** Changed in: linux (Ubuntu Focal)
Status: In Progress => Fix Committed
** Changed in: ubuntu-z-systems
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/1874058
Title:
[UBUNTU 20.04] mlx5: alloc_pages_nodemask stack trace
Status in Ubuntu on IBM z Systems:
Fix Committed
Status in linux package in Ubuntu:
In Progress
Status in linux source package in Focal:
Fix Committed
Bug description:
Using the mlx5 device driver on Ubuntu 20.04 (beta), the
alloc_pages_nodemask code generates a stack trace when initializing a
device. The driver tries to allocate more contiguous memory than is
allowed by the platform specific FORCE_MAX_ZONEORDER setting.
FORCE_MAX_ZONEORDER on s390x: 9
FORCE_MAX_ZONEORDER on other platforms: 11 or more
This issue only occurs on ConnectX5 devices because the mlx5_fw_tracer
code is only used for physical functions.
A fix for this has recently been pulled into David Miller's net tree as part
of a series of Mellanox fixes:
https://lore.kernel.org/netdev/[email protected]/
It hasn't landed in Linus' tree yet though
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