linux-kernel - Re: [PATCH v1] serial: sc16is7xx: Extend IRQ check for negative valus

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: <Z4j1NdXs-ng6VBNZ@smile.fi.intel.com>
Date: Thu, 16 Jan 2025 14:01:57 +0200
From: Andy Shevchenko <andy@...nel.org>
To: Jiri Slaby <jirislaby@...nel.org>
Cc: Andre Werner <andre.werner@...tec-electronic.com>,
	gregkh@...uxfoundation.org, hvilleneuve@...onoff.com,
	linux-kernel@...r.kernel.org, linux-serial@...r.kernel.org,
	lech.perczak@...lingroup.com
Subject: Re: [PATCH v1] serial: sc16is7xx: Extend IRQ check for negative valus

On Thu, Jan 16, 2025 at 11:02:23AM +0100, Jiri Slaby wrote:
> On 16. 01. 25, 10:53, Andy Shevchenko wrote:
> > On Thu, Jan 16, 2025 at 10:42:14AM +0100, Jiri Slaby wrote:
> > > This is threaded weirdly.
> > 
> > Yeah, new patch (version) — new email thread.
> > 
> > > On 16. 01. 25, 10:32, Andre Werner wrote:
> > > > Fix the IRQ check to treat the negative values as No IRQ.
> > > 
> > > Care to describe on what HW that can happen?
> > 
> > But how does this relevant? The whole idea is that neither I²C nor SPI
> > frameworks do not guarantee the IRQ field never be negative. This is
> > the fix to the previously submitted patch.
> 
> They do AFAICS.

They don't AFAICT.

> Could you be more specific?

The documentation of the fields and their types suggests my way of perception.

-- 
With Best Regards,
Andy Shevchenko