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From: bugzilla-daemon@kernel.org
To: linux-ext4@vger.kernel.org
Subject: [Bug 218601] Regression - dd if=/dev/zero of=/zero causes
 shift-out-of-bounds &&  NULL pointer dereference, address: 0000000000000003
Date: Fri, 15 Mar 2024 10:18:52 +0000
Message-ID: <bug-218601-13602-4CRFIjESSu@https.bugzilla.kernel.org/>
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https://bugzilla.kernel.org/show_bug.cgi?id=3D218601

Artem S. Tashkinov (aros@gmx.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
 Bisected commit-id|326e1c208f3f24d14b93f910b8a |
                   |e32c94923d22c               |

--- Comment #4 from Artem S. Tashkinov (aros@gmx.com) ---
I'm not an expert bug your backtrace looks weird. Please run memtest86 or
memtest86+ for an hour or two.

https://www.memtest86.com/download.htm

https://github.com/memtest86plus/memtest86plus/releases


I'm also removing the bisected ID because it doesn't look like it has anyth=
ing
to do with this issue.

You don't just copy random stuff from other bug reports which look similar =
to
yours. You actually bisect and provide the full bisect history.

Ubuntu 22.10 comes with kernel Kernel 5.19.

Ubuntu 23.10 comes with kernel Kernel 6.5.

That's a very large regression window. And then you can only bisect on vani=
lla
kernels, not Ubuntu ones. First compile and make sure 5.19 absolutely works=
 for
you. Then try consecutive kernels one by one. If you hit the issue, then you
will have just two kernel releases to work with, instead of trying to find =
the
regressions between two very distant kernels.

https://docs.kernel.org/admin-guide/bug-bisect.html

Best of luck.

--=20
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