linux-ext4 - [Bug 216322] Freezing of tasks failed after 60.004 seconds (1 tasks refusing to freeze... task:fstrim ext4_trim_fs

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Message-ID: <bug-216322-13602-H1RljRA495@https.bugzilla.kernel.org/>
Date:   Wed, 03 Aug 2022 20:26:31 +0000
From:   bugzilla-daemon@...nel.org
To:     linux-ext4@...r.kernel.org
Subject: [Bug 216322] Freezing of tasks failed after 60.004 seconds (1 tasks
 refusing to freeze... task:fstrim  ext4_trim_fs - Dell XPS 13 9310

https://bugzilla.kernel.org/show_bug.cgi?id=216322

--- Comment #1 from Len Brown (lenb@...nel.org) ---
Created attachment 301522
  --> https://bugzilla.kernel.org/attachment.cgi?id=301522&action=edit
html.gz page showing the failure

The sleepgraph output shows the 'fstrim' kernel thread
continuously calling schedule_time(15000).

Interestingly, re-trying the suspend after this failure
is successful.  So the failure is not permanent.
(perhaps the kernel is waiting for a frozen user process that is allowed to
proceed?)

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