Fix "Unable to handle kernel paging request" in AMD MP2 driver

Bug #1775152 reported by Kai-Heng Feng
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
linux-oem (Ubuntu)
Invalid
Undecided
Unassigned
Xenial
Fix Committed
Undecided
Unassigned

Bug Description

===SRU Justification===
[Impact]
Touchpad doesn't work after boot. Roughly 1/10 fail rate.

[Test]
With the patch, I no longer see the issue in 30 times reboot.

[Fix]
Factor out the pointer in the union, so the pointer value won't get changed by other union member.

[Regression Potential]
Low. It's specific to a single driver, which only enabled in OEM-A kernel.

description: updated
summary: - Fix null pointer dereference in AMD MP2 driver
+ Fix unhandled kernel page request in AMD MP2 driver
summary: - Fix unhandled kernel page request in AMD MP2 driver
+ Fix "Unable to handle kernel paging request" in AMD MP2 driver
Timo Aaltonen (tjaalton)
Changed in linux-oem (Ubuntu):
status: New → Invalid
Changed in linux-oem (Ubuntu Xenial):
status: New → Fix Committed
Revision history for this message
AceLan Kao (acelankao) wrote :

This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
xenial' to 'verification-done-xenial'. If the problem still exists,
change the tag 'verification-needed-xenial' to 'verification-failed-
xenial'.

If verification is not done by 5 working days from today, this fix will
be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how
to enable and use -proposed. Thank you!

tags: added: verification-needed-xenial
Revision history for this message
Kai-Heng Feng (kaihengfeng) wrote :

Reboot several times, not seeing this issue anymore.

tags: added: verification-done-xenial
removed: verification-needed-xenial
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