[Bug 1899726] Re: Fix system reboot when disconnecting WiFi

** Changed in: linux (Ubuntu Focal)
Status: Confirmed => Fix Committed

--
You received this bug notification because you are subscribed to linux
in Ubuntu.
Matching subscriptions: Bgg, Bmail, Nb
https://bugs.launchpad.net/bugs/1899726

Title:
Fix system reboot when disconnecting WiFi

Status in HWE Next:
New
Status in linux package in Ubuntu:
Fix Released
Status in linux-oem-5.6 package in Ubuntu:
Invalid
Status in linux source package in Focal:
Fix Committed
Status in linux-oem-5.6 source package in Focal:
Fix Released
Status in linux source package in Groovy:
Fix Released
Status in linux-oem-5.6 source package in Groovy:
Invalid

Bug description:
[Impact]
Hardware triggrs reboot when disconnecting WiFi connection.

[Fix]
There's a DMA bug in Intel WiFi 9000 needs to be limits to 6 RX queue
max.

[Test]
With the patch applied, a 1000 times of connect/disconnect loop doesn't
bring the system down.

[Regression Potential]
Not that I can think of. Hypothetically reducing RX queue rings will
reduce the RX speed, but the wireless transfter is a lot slower then DMA
operation, so we won't see any difference.

To manage notifications about this bug go to:
https://bugs.launchpad.net/hwe-next/+bug/1899726/+subscriptions