linux-ext4 - [Bug 218601] Regression - dd if=/dev/zero of=/zero causes shift-out-of-bounds && NULL pointer dereference, address: 0000000000000003

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Message-ID: <bug-218601-13602-lIAU0DvjrC@https.bugzilla.kernel.org/>
Date: Thu, 21 Mar 2024 05:20:03 +0000
From: bugzilla-daemon@...nel.org
To: linux-ext4@...r.kernel.org
Subject: [Bug 218601] Regression - dd if=/dev/zero of=/zero causes
 shift-out-of-bounds &&  NULL pointer dereference, address: 0000000000000003

https://bugzilla.kernel.org/show_bug.cgi?id=218601

--- Comment #8 from Colin (colin.kernel@...entest.info) ---
Attached is the dmesg output of 6.8.1 built manually from vanilla sources under
Ubuntu 23.10 when running `stress-ng --class cpu --seq 32`. 

A few things I find odd: 

- If this was a bug, surely the hardware is not esoteric enough that nobody
else would have experienced this? 
- Again, it feels like this has 'gotten worse' since I first experienced it,
and older kernel seem more stable
- Building the linux kernel was segfaulting at different locations, I ended up
building it on another machine.

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