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Date:   Fri, 23 Dec 2022 15:25:07 +0100
From:   Greg KH <gregkh@linuxfoundation.org>
To:     Sergio Callegari <sergio.callegari@gmail.com>
Cc:     stable@vger.kernel.org, regressions@lists.linux.dev
Subject: Re: Possible regression with kernel 6.1.0 freezing (6.0.14 is fine)
 on haswell laptop
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On Fri, Dec 23, 2022 at 03:13:57PM +0100, Sergio Callegari wrote:
> Hi,
> 
> just a short note to report regular freezes with kernel 6.1.0 on a haswell
> laptop quad core Intel Core i7-4750HQ (-MT MCP-) with integrated graphics.
> 
> - system only freezes when launching the desktop environment (working on a
> text console while having the sddm login screen up, without logging in, does
> not seem to cause the issue);
> 
> - freezes happens a few seconds to a few minutes after getting to the
> desktop environment (that uses opengl and composition). Freeze happens both
> on X11 or Wayland.
> 
> - freeze seems to cause data loss (system not able to complete writes when
> the freeze occurs, data structures on disk get corrupted, e.g. system
> complained on broken btrfs snapshots made by timeshift-like app).
> 
> - system on freeze ceases responding to ping from the outside;
> 
> - upon reboot I cannot find any trace of any issue in the journal;
> 
> - on the same system booting kernels up to 6.0.14 is OK.

Can you use 'git bisect' to find the offending commit?

thanks,

greg k-h