linux-kernel - Re: FYI: i.MX8MP ISP (RKISP1) MI registers corruption

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <m34iumujcs.fsf@t19.piap.pl>
Date: Tue, 05 Aug 2025 12:57:07 +0200
From: Krzysztof Hałasa <khalasa@...p.pl>
To: Stefan Klug <stefan.klug@...asonboard.com>
Cc: Dafna Hirschfeld <dafna@...tmail.com>,  Laurent Pinchart
 <laurent.pinchart@...asonboard.com>,  Heiko Stuebner <heiko@...ech.de>,
  Paul Elder <paul.elder@...asonboard.com>,  Jacopo Mondi
 <jacopo.mondi@...asonboard.com>,  Ondrej Jirman <megi@....cz>,
  linux-media@...r.kernel.org,  linux-rockchip@...ts.infradead.org,
  linux-arm-kernel@...ts.infradead.org,  linux-kernel@...r.kernel.org
Subject: Re: FYI: i.MX8MP ISP (RKISP1) MI registers corruption

Hi,

just in case someone finds it helpful:

SError Interrupt on CPU3, code 0x00000000bf000002 -- SError
CPU: 3 UID: 0 PID: 40083 Comm: devmem Not tainted 6.15+ PREEMPT
pstate: 60000000 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
Kernel panic - not syncing: Asynchronous SError Interrupt

What did i do? Wrote 32-bit value to an ISP register (0x32E22E2E4C =
a histogram-64 register) while repeatedly reading other ISP
registers (in userspace). The video stream was active.

This ISP apparently has its own problems.
--
Krzysztof "Chris" Hałasa

Sieć Badawcza Łukasiewicz
Przemysłowy Instytut Automatyki i Pomiarów PIAP
Al. Jerozolimskie 202, 02-486 Warszawa