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Date:      Fri, 13 Aug 2021 13:14:37 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 256722] [PATCH] EFI boot: Fix boot freeze on some systems
Message-ID:  <bug-256722-227-ahvb6qhd1J@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-256722-227@https.bugs.freebsd.org/bugzilla/>
References:  <bug-256722-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D256722

--- Comment #5 from David Sebek <dasebek@gmail.com> ---
(In reply to Graham Perrin from comment #4)
Given that the improvements added by the patch D31121 are disabled by defau=
lt,
I think that patch D30828 is still relevant. The latest 14-CURRENT build fa=
ils
to boot on my laptop unless copy_staging is manually disabled.

Moreover, the patch D30828 adds some missing return value checks and warns =
if
it detects a buffer overflow or if the boot loader accesses a reserved memo=
ry
range.

However, the patch will need some improvements. I found that it does not de=
tect
a scenario when a loaded kernel module (such as an image created by mfsbsd)=
 is
larger than the staging area size (64 megabytes).

--=20
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