Bug#1123987: UBSAN: array-index-out-of-bounds in ucsi.c

From	Salvatore Bonaccorso <carnil@debian.org>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#1123987: UBSAN: array-index-out-of-bounds in ucsi.c
Date	2025-12-26 18:40 +0100
Message-ID	<M6jXb-5QdE-3@gated-at.bofh.it> (permalink)
References	(1 earlier) <M6iy5-5PqS-7@gated-at.bofh.it> <M6ju9-5Q30-15@gated-at.bofh.it> <M6jXb-5QdE-5@gated-at.bofh.it> <M5VrP-5zQZ-7@gated-at.bofh.it> <M6jXb-5QdE-5@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Cross-posted to 2 groups.

Show all headers | View raw

Hi Pascal,

On Fri, Dec 26, 2025 at 05:17:00PM +0100, Salvatore Bonaccorso wrote:
> Control: found -1 6.18.2-1~exp1
> 
> Hi Pascal,
> 
> On Fri, Dec 26, 2025 at 05:04:36PM +0100, pdormeau@free.fr wrote:
> > Le Fri, 26 Dec 2025 16:40:04 +0100,
> > Salvatore Bonaccorso <carnil@debian.org> a écrit :
> > 
> > >Can you verify if this still happens with 6.18.2-1~exp1 in
> > >experimental (and ideally as well tested explicitly with mainline)?
> > >
> > >Regards,
> > >Salvatore
> > Hi, thank you for answering.
> > 
> > Still there with 6.18.2-1~exp1. I will test with main line. It may
> > take some time because this faulty laptop is the one I use in vacation,
> > and I cannot let it in operation for too long (especially for compiling
> > a kernel). I will let you know when it is done
> 
> Thanks for the confirmation.
> 
> Ack sure take the time it needs even delaying after vacation. We put
> ourself on hold for now, as I have no better idea as to try the bisect
> experiment as described. Maybe someone else comes up with a better
> approrach!

Sorry I wanted to write actually someting else :). If we can confirm
it in mainline then we can forward the bugreport straight as there is
no need to further bisect, as the issue was already as well present in
the 6.16.y series.

So ignore please the last comment from me.

Regards,
Salvatore

Thread

Bug#1123987: UBSAN: array-index-out-of-bounds in ucsi.c Salvatore Bonaccorso <carnil@debian.org> - 2025-12-26 17:10 +0100
  Processed: Re: Bug#1123987: UBSAN: array-index-out-of-bounds in  ucsi.c "Debian Bug Tracking System" <owner@bugs.debian.org> - 2025-12-26 17:10 +0100
  Bug#1123987: UBSAN: array-index-out-of-bounds in ucsi.c <pdormeau@free.fr> - 2025-12-26 18:10 +0100
    Bug#1123987: UBSAN: array-index-out-of-bounds in ucsi.c Salvatore Bonaccorso <carnil@debian.org> - 2025-12-26 18:40 +0100
    Bug#1123987: UBSAN: array-index-out-of-bounds in ucsi.c Salvatore Bonaccorso <carnil@debian.org> - 2025-12-26 19:10 +0100
      Processed: Re: Bug#1123987: UBSAN: array-index-out-of-bounds in  ucsi.c "Debian Bug Tracking System" <owner@bugs.debian.org> - 2025-12-26 19:10 +0100

csiph-web