[Bug 297062] geom_zero: panics on read

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D297062

Jordan Gordeev <[email protected]> changed:

           What    |Removed                     |Added
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                 CC|                            |[email protected]

--- Comment #2 from Jordan Gordeev <[email protected]> ---
The panic also occurs on arm64. It's not amd64-specific so the "Hardware" f=
ield
of this PR should be changed to "Any". Also, the "Assignee" should probably=
 be
changed to freebsd-geom@.

On FreeBSD 15.1-RELEASE-p1 on arm64 after executing "kldload geom_zero", I
executed the command "dd if=3D/dev/gzero of=3D/dev/null bs=3D5k count=3D1" =
and the
system paniced. If the value of the "bs" parameter is "1k", "2k", "3k" or "=
4k",
there is no panic.

Testing for the presence of this problem can be easily accomplished using t=
he
Live System mode of the FreeBSD install media. I tried it on 15.0-RELEASE a=
nd
there was no panic.

This bug might be related to this recently reported one:
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D296761

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