Public bug reported:
[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.
** Affects: hwe-next
Importance: Undecided
Status: New
** Affects: linux (Ubuntu)
Importance: High
Status: Confirmed
** Affects: linux-oem-5.6 (Ubuntu)
Importance: Undecided
Status: Invalid
** Affects: linux (Ubuntu Focal)
Importance: High
Status: Confirmed
** Affects: linux-oem-5.6 (Ubuntu Focal)
Importance: High
Status: Confirmed
** Affects: linux (Ubuntu Groovy)
Importance: High
Status: Confirmed
** Affects: linux-oem-5.6 (Ubuntu Groovy)
Importance: Undecided
Status: Invalid
** Tags: oem-priority originate-from-1891986 sutton
** Also affects: linux-oem-5.6 (Ubuntu)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Groovy)
Importance: Undecided
Status: New
** Also affects: linux-oem-5.6 (Ubuntu Groovy)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Focal)
Importance: Undecided
Status: New
** Also affects: linux-oem-5.6 (Ubuntu Focal)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Focal)
Status: New => Confirmed
** Changed in: linux (Ubuntu Groovy)
Status: New => Confirmed
** Changed in: linux-oem-5.6 (Ubuntu Focal)
Status: New => Confirmed
** Changed in: linux-oem-5.6 (Ubuntu Groovy)
Status: New => Invalid
** Changed in: linux (Ubuntu Focal)
Importance: Undecided => High
** Changed in: linux (Ubuntu Groovy)
Importance: Undecided => High
** Changed in: linux-oem-5.6 (Ubuntu Focal)
Importance: Undecided => High
** Tags added: oem-priority originate-from-1891986 sutton
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https://bugs.launchpad.net/bugs/1899726
Title:
Fix system reboot when disconnecting WiFi
Status in HWE Next:
New
Status in linux package in Ubuntu:
Confirmed
Status in linux-oem-5.6 package in Ubuntu:
Invalid
Status in linux source package in Focal:
Confirmed
Status in linux-oem-5.6 source package in Focal:
Confirmed
Status in linux source package in Groovy:
Confirmed
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
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