From: "Linux regression tracking (Thorsten Leemhuis)" <regressions@leemhuis.info>
To: imre.deak@intel.com, Chris Bainbridge <chris.bainbridge@gmail.com>
Cc: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
lyude@redhat.com, ville.syrjala@linux.intel.com,
stanislav.lisovskiy@intel.com, mripard@kernel.org,
Linux kernel regressions list <regressions@lists.linux.dev>
Subject: Re: [PATCH] Fix divide-by-zero on DP unplug with nouveau
Date: Mon, 11 Mar 2024 17:18:07 +0100 [thread overview]
Message-ID: <fc215679-e5f8-4d1e-bd70-c940d40a01e3@leemhuis.info> (raw)
In-Reply-To: <Ze8suV5ox+43/wAC@ideak-desk.fi.intel.com>
On 11.03.24 17:09, Imre Deak wrote:
> On Sat, Feb 10, 2024 at 09:24:59PM +0000, Chris Bainbridge wrote:
> Sorry for the delay.
Happens, thx for looking onto this!
>> The following trace occurs when using nouveau and unplugging a DP MST
>> adaptor:
> [...]
>> + if (bpp_x16 == 0)
>> + return 0;
>
> Could you please move the check to the beginnig of the function and add
> a debug message in case bpp_x16 is 0?
>
> It looks odd that a driver calls this function with a 0 bpp_x16, and
> ideally it should be fixed in the driver. However as it's a regression
> and we don't have a better idea now:
>
> Acked-by: Imre Deak <imre.deak@intel.com>
Chris: as this went into 6.8, please consider adding a stable-tag to
ensure Greg picks this up.
Ciao, Thorsten
parent reply other threads:[~2024-03-11 16:18 UTC|newest]
Thread overview: expand[flat|nested] mbox.gz Atom feed
[parent not found: <Ze8suV5ox+43/wAC@ideak-desk.fi.intel.com>]
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