** Tags added: verification-needed-jammy
** Changed in: linux-oem-6.1 (Ubuntu Jammy)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/2018566
Title:
A deadlock issue in scsi rescan task while resuming from S3
Status in HWE Next:
New
Status in linux package in Ubuntu:
In Progress
Status in linux-oem-6.0 package in Ubuntu:
New
Status in linux-oem-6.1 package in Ubuntu:
Invalid
Status in linux source package in Jammy:
In Progress
Status in linux-oem-6.0 source package in Jammy:
In Progress
Status in linux-oem-6.1 source package in Jammy:
Fix Committed
Status in linux source package in Lunar:
In Progress
Status in linux-oem-6.0 source package in Lunar:
New
Status in linux-oem-6.1 source package in Lunar:
Invalid
Status in linux source package in Mantic:
In Progress
Status in linux-oem-6.0 source package in Mantic:
New
Status in linux-oem-6.1 source package in Mantic:
Invalid
Bug description:
[Impact]
During the S3 stress test, the system sometimes hangs when resuming. This is
due to the SCSI rescan task being unable to acquire the mutex lock during the
resumption from S3. The mutex lock has already been acquired by EH and is
waiting for the device to be ready for a rescan. Unfortunately, the mutex lock
is never released by either party, leading to a deadlock.
[Fix]
Kaiheng submitted a patch to fix this issue which defers the rescan if the
disk is still suspended so the resume process of the disk device can proceed.
https://patchwork.ozlabs.org/project/linux-ide/patch/[email protected]/
Since the patch has not been accepted by the upstream yet, so submit
it to the OEM kernel for now.
[Test]
Verified on the machines by me and ODM.
[Where problems could occur]
It only defers the rescan task, and should not have any impact to current
systems.
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