linux-hardening - [REGRESSION][BISECTED] Cannot boot Lichee Pi 4A with FORTIFY

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Message-ID: <CAJD_bPJes4QhmXY5f63GHV9B9HFkSCoaZjk-qCT2NGS7Q9HODg@mail.gmail.com>
Date: Sat, 21 Sep 2024 13:42:11 -0400
From: Jason Montleon <jmontleo@...hat.com>
To: linux-hardening@...r.kernel.org
Cc: Linux regressions mailing list <regressions@...ts.linux.dev>, kees@...nel.org, 
	linux-riscv@...ts.infradead.org
Subject: [REGRESSION][BISECTED] Cannot boot Lichee Pi 4A with FORTIFY_SOURCE enabled

Starting with 6.11-rc1 I can no longer boot the Lichee Pi 4A with
FORTIFY_SOURCE enabled. This works on 6.10 up to at least 6.10.11.
However, with 6.11 I get no output at all from the kernel on the
serial console with FORTIFY_SOURCE enabled and the system never comes
online on network or otherwise as far as I can tell.

I did a bisect which led to:
2003e483a81cc235e29f77da3f6b256cb4b348e7
fortify: Do not special-case 0-sized destinations

If I revert this commit I can once again boot the Lichee Pi 4A with
FORTIFY_SOURCE enabled.

Thank you,
Jason Montleon