I've identified a bug impacting Linux kernel images 6.0, 6.1, and 6.2 on
Jammy. As I'm new to the Launchpad bugs platform, I'm seeking
clarification on the process. Will the fix be incorporated into the
upcoming Linux kernel releases for Jammy?

Additionally, I've noticed a submitted patch in the mailing list that
would fix issue for Jammy kernels.

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https://bugs.launchpad.net/bugs/2036184

Title:
  Infinite systemd loop when power off the machine with multiple MD
  RAIDs

Status in HWE Next:
  New
Status in linux package in Ubuntu:
  In Progress
Status in linux-oem-6.1 package in Ubuntu:
  Invalid
Status in linux-oem-6.5 package in Ubuntu:
  Invalid
Status in linux source package in Jammy:
  Invalid
Status in linux-oem-6.1 source package in Jammy:
  Fix Committed
Status in linux-oem-6.5 source package in Jammy:
  Fix Released
Status in linux source package in Mantic:
  In Progress
Status in linux-oem-6.1 source package in Mantic:
  Invalid
Status in linux-oem-6.5 source package in Mantic:
  Invalid

Bug description:
  [Impact]
  The system with multiple MD RAIDs sometimes hangs while rebooting, that's 
because of the systemd can't stop and close the MD disk.

  [Fix]
  This commit fixes the issue, and this issue has been introduced by 
12a6caf27324 ("md: only delete entries from all_mddevs when the disk is freed") 
after v6.0

  https://patchwork.kernel.org/project/linux-
  raid/patch/20230914152416.10819-1-mariusz.tkac...@linux.intel.com/

  [Test case]
  1. Reboot the system with multiple MD RAIDs at least 10 times.
  2. Make sure the system can reboot successfully every time.
  3. You should not see error messages like below.

  [ 205.360738] systemd-shutdown[1]: Stopping MD devices.
  [ 205.366384] systemd-shutdown[1]: sd-device-enumerator: Scan all dirs
  [ 205.373327] systemd-shutdown[1]: sd-device-enumerator: Scanning /sys/bus
  [ 205.380427] systemd-shutdown[1]: sd-device-enumerator: Scanning /sys/class
  [ 205.388257] systemd-shutdown[1]: Stopping MD /dev/md127 (9:127).
  [ 205.394880] systemd-shutdown[1]: Failed to sync MD block device /dev/md127, 
ignoring: Input/output error
  [ 205.404975] md: md127 stopped.
  [ 205.470491] systemd-shutdown[1]: Stopping MD /dev/md126 (9:126).
  [ 205.770179] md: md126: resync interrupted.
  [ 205.776258] md126: detected capacity change from 1900396544 to 0
  [ 205.783349] md: md126 stopped.
  [ 205.862258] systemd-shutdown[1]: Stopping MD /dev/md125 (9:125).
  [ 205.862435] md: md126 stopped.
  [ 205.868376] systemd-shutdown[1]: Failed to sync MD block device /dev/md125, 
ignoring: Input/output error
  [ 205.872845] block device autoloading is deprecated and will be removed.
  [ 205.880955] md: md125 stopped.
  [ 205.934349] systemd-shutdown[1]: Stopping MD /dev/md124p2 (259:7).
  [ 205.947707] systemd-shutdown[1]: Could not stop MD /dev/md124p2: Device or 
resource busy
  [ 205.957004] systemd-shutdown[1]: Stopping MD /dev/md124p1 (259:6).
  [ 205.964177] systemd-shutdown[1]: Could not stop MD /dev/md124p1: Device or 
resource busy
  [ 205.973155] systemd-shutdown[1]: Stopping MD /dev/md124 (9:124).
  [ 205.979789] systemd-shutdown[1]: Could not stop MD /dev/md124: Device or 
resource busy
  [ 205.988475] systemd-shutdown[1]: Not all MD devices stopped, 4 left.

  [Where problems could occur]
  It fixes the data race issue, should not introduce any regression.

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