** Also affects: linux (Ubuntu Zesty)
Importance: High
Assignee: dann frazier (dannf)
Status: In Progress
** Changed in: linux (Ubuntu Zesty)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/1672486
Title:
arm64: Workaround QDF2400 erratum 0065
Status in linux package in Ubuntu:
Fix Committed
Status in linux source package in Zesty:
Fix Committed
Bug description:
QDF2400 platforms require an erratum workaround to avoid a memory
corruption issue. This was fixed upstream in the following commit:
commit 90922a2d03d84de36bf8a9979d62580102f31a92
Author: Shanker Donthineni <[email protected]>
Date: Tue Mar 7 08:20:38 2017 -0600
irqchip/gicv3-its: Add workaround for QDF2400 ITS erratum 0065
On Qualcomm Datacenter Technologies QDF2400 SoCs, the ITS hardware
implementation uses 16Bytes for Interrupt Translation Entry (ITE),
but reports an incorrect value of 8Bytes in GITS_TYPER.ITTE_size.
It might cause kernel memory corruption depending on the number
of MSI(x) that are configured and the amount of memory that has
been allocated for ITEs in its_create_device().
This patch fixes the potential memory corruption by setting the
correct ITE size to 16Bytes.
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