Public bug reported:

On ubuntu 22.04, I installed v6.0-rc3 mainline kernel.
linux-firmware 20220329.git681281e4-0ubuntu3.4

Sep 01 13:25:13 u-ThinkPad-P16-Gen-1 kernel: PM: suspend entry (s2idle)
Sep 01 13:25:13 u-ThinkPad-P16-Gen-1 kernel: Filesystems sync: 0.004 seconds
Sep 01 13:25:33 u-ThinkPad-P16-Gen-1 kernel: Freezing user space processes ...
Sep 01 13:25:33 u-ThinkPad-P16-Gen-1 kernel: Freezing of tasks failed after 
20.007 seconds (9 tasks refusing to freeze, wq_busy=0):
Sep 01 13:25:33 u-ThinkPad-P16-Gen-1 kernel: task:NetworkManager  state:D 
stack:    0 pid:  988 ppid:     1 flags:0x00004006
Sep 01 13:25:33 u-ThinkPad-P16-Gen-1 kernel: Call Trace:
Sep 01 13:25:33 u-ThinkPad-P16-Gen-1 kernel:  <TASK>
Sep 01 13:25:33 u-ThinkPad-P16-Gen-1 kernel:  __schedule+0x221/0x5c0
Sep 01 13:25:33 u-ThinkPad-P16-Gen-1 kernel:  schedule+0x5f/0x100
Sep 01 13:25:33 u-ThinkPad-P16-Gen-1 kernel:  schedule_timeout+0x111/0x150
Sep 01 13:25:33 u-ThinkPad-P16-Gen-1 kernel:  wait_for_completion+0x88/0x140
Sep 01 13:25:33 u-ThinkPad-P16-Gen-1 kernel:  __flush_work.isra.0+0x1b9/0x340
Sep 01 13:25:33 u-ThinkPad-P16-Gen-1 kernel:  ? 
flush_workqueue_prep_pwqs+0x140/0x140
Sep 01 13:25:33 u-ThinkPad-P16-Gen-1 kernel:  __cancel_work_timer+0x10d/0x190
Sep 01 13:25:33 u-ThinkPad-P16-Gen-1 kernel:  ? 
ath11k_mac_config_mon_status_default+0x9c/0x170 [ath11k]
Sep 01 13:25:33 u-ThinkPad-P16-Gen-1 kernel:  cancel_work_sync+0x10/0x20
Sep 01 13:25:33 u-ThinkPad-P16-Gen-1 kernel:  ath11k_mac_op_stop+0x9f/0x1e0 
[ath11k]
Sep 01 13:25:33 u-ThinkPad-P16-Gen-1 kernel:  drv_stop+0x45/0x120 [mac80211]
Sep 01 13:25:33 u-ThinkPad-P16-Gen-1 kernel:  ieee80211_stop_device+0x43/0x50 
[mac80211]
Sep 01 13:25:33 u-ThinkPad-P16-Gen-1 kernel:  ieee80211_do_stop+0x6b1/0x980 
[mac80211]
Sep 01 13:25:33 u-ThinkPad-P16-Gen-1 kernel:  ? 
cond_synchronize_rcu_expedited+0x40/0x40
Sep 01 13:25:33 u-ThinkPad-P16-Gen-1 kernel:  ? qdisc_reset+0x27/0x150
Sep 01 13:25:33 u-ThinkPad-P16-Gen-1 kernel:  ieee80211_stop+0x43/0x170 
[mac80211]
Sep 01 13:25:33 u-ThinkPad-P16-Gen-1 kernel:  __dev_close_many+0x9f/0x120

** Affects: oem-priority
     Importance: Undecided
         Status: New

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: oem-priority originate-from-1981174 originate-from-1981178 
originate-from-1982536 originate-from-1983094 sutton

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https://bugs.launchpad.net/bugs/1991036

Title:
  ath11k: Freezing kernel when doing s2idle [17cb:1103]

Status in OEM Priority Project:
  New
Status in linux package in Ubuntu:
  New

Bug description:
  On ubuntu 22.04, I installed v6.0-rc3 mainline kernel.
  linux-firmware 20220329.git681281e4-0ubuntu3.4

  Sep 01 13:25:13 u-ThinkPad-P16-Gen-1 kernel: PM: suspend entry (s2idle)
  Sep 01 13:25:13 u-ThinkPad-P16-Gen-1 kernel: Filesystems sync: 0.004 seconds
  Sep 01 13:25:33 u-ThinkPad-P16-Gen-1 kernel: Freezing user space processes ...
  Sep 01 13:25:33 u-ThinkPad-P16-Gen-1 kernel: Freezing of tasks failed after 
20.007 seconds (9 tasks refusing to freeze, wq_busy=0):
  Sep 01 13:25:33 u-ThinkPad-P16-Gen-1 kernel: task:NetworkManager  state:D 
stack:    0 pid:  988 ppid:     1 flags:0x00004006
  Sep 01 13:25:33 u-ThinkPad-P16-Gen-1 kernel: Call Trace:
  Sep 01 13:25:33 u-ThinkPad-P16-Gen-1 kernel:  <TASK>
  Sep 01 13:25:33 u-ThinkPad-P16-Gen-1 kernel:  __schedule+0x221/0x5c0
  Sep 01 13:25:33 u-ThinkPad-P16-Gen-1 kernel:  schedule+0x5f/0x100
  Sep 01 13:25:33 u-ThinkPad-P16-Gen-1 kernel:  schedule_timeout+0x111/0x150
  Sep 01 13:25:33 u-ThinkPad-P16-Gen-1 kernel:  wait_for_completion+0x88/0x140
  Sep 01 13:25:33 u-ThinkPad-P16-Gen-1 kernel:  __flush_work.isra.0+0x1b9/0x340
  Sep 01 13:25:33 u-ThinkPad-P16-Gen-1 kernel:  ? 
flush_workqueue_prep_pwqs+0x140/0x140
  Sep 01 13:25:33 u-ThinkPad-P16-Gen-1 kernel:  __cancel_work_timer+0x10d/0x190
  Sep 01 13:25:33 u-ThinkPad-P16-Gen-1 kernel:  ? 
ath11k_mac_config_mon_status_default+0x9c/0x170 [ath11k]
  Sep 01 13:25:33 u-ThinkPad-P16-Gen-1 kernel:  cancel_work_sync+0x10/0x20
  Sep 01 13:25:33 u-ThinkPad-P16-Gen-1 kernel:  ath11k_mac_op_stop+0x9f/0x1e0 
[ath11k]
  Sep 01 13:25:33 u-ThinkPad-P16-Gen-1 kernel:  drv_stop+0x45/0x120 [mac80211]
  Sep 01 13:25:33 u-ThinkPad-P16-Gen-1 kernel:  ieee80211_stop_device+0x43/0x50 
[mac80211]
  Sep 01 13:25:33 u-ThinkPad-P16-Gen-1 kernel:  ieee80211_do_stop+0x6b1/0x980 
[mac80211]
  Sep 01 13:25:33 u-ThinkPad-P16-Gen-1 kernel:  ? 
cond_synchronize_rcu_expedited+0x40/0x40
  Sep 01 13:25:33 u-ThinkPad-P16-Gen-1 kernel:  ? qdisc_reset+0x27/0x150
  Sep 01 13:25:33 u-ThinkPad-P16-Gen-1 kernel:  ieee80211_stop+0x43/0x170 
[mac80211]
  Sep 01 13:25:33 u-ThinkPad-P16-Gen-1 kernel:  __dev_close_many+0x9f/0x120

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