From: Alexandre Belloni <alexandre.belloni@bootlin.com>
To: Louis Sautier <louis.sautier@ovhcloud.com>
Cc: linux-i3c@lists.infradead.org
Subject: Re: Error while loading dw-i3c-master: UBSAN: shift-out-of-bounds in drivers/i3c/master/dw-i3c-master.c:885:12
Date: Mon, 8 Dec 2025 21:58:40 +0100 [thread overview]
Message-ID: <202512082058408ee92ee8@mail.local> (raw)
In-Reply-To: <66f5e4db-ac20-4bec-a437-af86aad1f56e@ovhcloud.com>
Hello Louis,
On 02/12/2025 21:17:31+0100, Louis Sautier wrote:
> Hello,
>
> I'm running into a bug when loading the dw-i3c-master module on kernel 6.18
> on one specific server. I suspect it has to do with the large number of
> CPUs on the machine (768 threads, from 2 AMD EPYC 9965 processors) but I am
> not sure.
>
> The system is on Ubuntu 25.10 and a 6.18 kernel with https://gist.githubusercontent.com/sbraz/a6f37fafbcf9354bbe4eace9e9eb48cb/raw/115da594dc9d7ea99b06754847571e6fd76d9da5/config
> (basically Ubuntu's).
Just to be sure, does this also happen with v6.17?
The only change is the shutdown handling so I would guess yes.
--
Alexandre Belloni, co-owner and COO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
--
linux-i3c mailing list
linux-i3c@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-i3c
next prev parent reply other threads:[~2025-12-08 20:58 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-12-02 20:17 Error while loading dw-i3c-master: UBSAN: shift-out-of-bounds in drivers/i3c/master/dw-i3c-master.c:885:12 Louis Sautier
2025-12-08 18:54 ` Manikanta Guntupalli
2025-12-08 20:58 ` Alexandre Belloni [this message]
2025-12-09 11:37 ` Louis Sautier
2025-12-09 12:48 ` Alexandre Belloni
2025-12-09 15:36 ` Louis Sautier
2025-12-09 17:24 ` Frank Li
2025-12-09 19:52 ` Louis Sautier
2025-12-10 15:20 ` Frank Li
2025-12-10 19:50 ` Louis Sautier
2025-12-11 16:52 ` Frank Li
2025-12-12 19:44 ` Louis Sautier
2025-12-15 16:25 ` Frank Li
2025-12-30 1:30 ` Louis Sautier
2026-02-23 17:10 ` Boqun Feng
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