** Also affects: linux-bluefield (Ubuntu Focal)
Importance: Undecided
Status: New
** Changed in: linux-bluefield (Ubuntu Focal)
Importance: Undecided => Medium
** Changed in: linux-bluefield (Ubuntu Focal)
Status: New => In Progress
** Changed in: linux-bluefield (Ubuntu Jammy)
Importance: Undecided => Medium
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https://bugs.launchpad.net/bugs/2016039
Title:
mlxbf-tmfifo: fix potential race
Status in linux-bluefield package in Ubuntu:
Invalid
Status in linux-bluefield source package in Focal:
In Progress
Status in linux-bluefield source package in Jammy:
Fix Committed
Bug description:
SRU Justification:
[Impact]
This change is needed to avoid potential race of accessing the 'vq' pointer
[Fix]
The fix adds memory barrier for the is_ready flag and the 'vq' pointer access
in mlxbf_tmfifo_virtio_find_vqs(), so updated in vq will be visible before
accessing this pointer.
[Test Case]
Same functionality and testing as on BlueField-1/2/2. No functionality change.
[Regression Potential]
Same behavior from user perspective.
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