linux-ext4 - [Bug 220535] ext4 __jbd2_log_wait_for_space soft lockup and CPU stuck for 134s

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Message-ID: <bug-220535-13602-B659i5MetE@https.bugzilla.kernel.org/>
Date: Fri, 05 Sep 2025 13:34:27 +0000
From: bugzilla-daemon@...nel.org
To: linux-ext4@...r.kernel.org
Subject: [Bug 220535] ext4 __jbd2_log_wait_for_space soft lockup and CPU
 stuck for 134s

https://bugzilla.kernel.org/show_bug.cgi?id=220535

Christian Kujau (kernel@...dbynature.de) changed:

           What    |Removed                     |Added
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                 CC|                            |kernel@...dbynature.de

--- Comment #4 from Christian Kujau (kernel@...dbynature.de) ---
https://www.kernel.org/doc/html/latest/admin-guide/reporting-issues.html may be
of help here. Please try to reproduce with the latest version and post this
backtrace here.

An untainted kernel would be helpful too I guess, see

 https://www.kernel.org/doc/html/latest/admin-guide/tainted-kernels.html

>From the backtrace above:

 > Tainted: G S         OE  X  N 5.14.21-20250107.el7.x86_64

 - S if the kernel is running on a processor or system that is 
     out of specification
 - O if an externally-built (“out-of-tree”) module has been loaded.
 - E if an unsigned module has been loaded in a kernel 
     supporting module signature.
 - X Auxiliary taint, defined for and used by Linux distributors.
 - N if an in-kernel test, such as a KUnit test, has been run.

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