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Re: X11 system lockup with 5.11.0 kernel

On Mon, Apr 05, 2021 at 04:55:15PM +1200, Michael Cree wrote:
> On Sun, Apr 04, 2021 at 11:47:58PM -0500, Bob Tracy wrote:
> > On Wed, Mar 31, 2021 at 11:04:42AM +0200, Maciej W. Rozycki wrote:
> > >  I think the only feasible way of determining what has happened here is 
> > > that you track the offending change down by bisecting the upstream kernel 
> > > repository with `git bisect'.
> > 
> > That would normally be what I would do, and it may yet happen.  Problem
> > is, I don't have a 64-bit system with enough disk space to do the kernel
> > builds with a cross-compiler, and local (native) builds on the PWS are
> > taking 36+ hours each these days.  Unless I get *really* lucky with the
> > bisects, the task will take a couple of weeks.
> Confirmed that v5.11.0 hard locks up on presenting the X-Desktop
> login screen whereas v5.10.0 is fine. This is on a XP1000 with
> a Radeon HD4350.

And the first bad commit is:

0fe3cf3a53b5c1205ec7d321be1185b075dff205 is the first bad commit
commit 0fe3cf3a53b5c1205ec7d321be1185b075dff205
Author: Christian König <christian.koenig@amd.com>
Date:   Sat Oct 24 13:12:23 2020 +0200

    drm/radeon: switch to new allocator v2
    It should be able to handle all cases here.
    v2: fix debugfs as well
    Signed-off-by: Christian König <christian.koenig@amd.com>
    Reviewed-by: Dave Airlie <airlied@redhat.com>
    Reviewed-by: Madhav Chauhan <madhav.chauhan@amd.com>
    Tested-by: Huang Rui <ray.huang@amd.com>
    Link: https://patchwork.freedesktop.org/patch/397088/?series=83051&rev=1

:040000 040000 4e643ef861b921392bc67be21a42298c91c7ff7a b36453567c3176a3cd50fa0b23886b0fd642560d M	drivers


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