Re: [Intel-gfx] [PATCH v7] drm/i915/display: disable HPD workers before display driver unregister

2022-06-15 Thread Ville Syrjälä
On Tue, Jun 14, 2022 at 05:06:40PM +0200, Andrzej Hajda wrote: > On 10.06.2022 20:37, Ville Syrjälä wrote: > > On Fri, Jun 10, 2022 at 06:00:24PM +0200, Andrzej Hajda wrote: > >> Handling HPD during driver removal is pointless, and can cause different > >> use-after-free/concurrency issues: > >>

Re: [Intel-gfx] [PATCH v7] drm/i915/display: disable HPD workers before display driver unregister

2022-06-14 Thread Andrzej Hajda
On 10.06.2022 20:37, Ville Syrjälä wrote: On Fri, Jun 10, 2022 at 06:00:24PM +0200, Andrzej Hajda wrote: Handling HPD during driver removal is pointless, and can cause different use-after-free/concurrency issues: 1. Setup of deferred fbdev after fbdev unregistration. 2. Access to DP-AUX after

Re: [Intel-gfx] [PATCH v7] drm/i915/display: disable HPD workers before display driver unregister

2022-06-10 Thread Ville Syrjälä
On Fri, Jun 10, 2022 at 06:00:24PM +0200, Andrzej Hajda wrote: > Handling HPD during driver removal is pointless, and can cause different > use-after-free/concurrency issues: > 1. Setup of deferred fbdev after fbdev unregistration. > 2. Access to DP-AUX after DP-AUX removal. > > Below stacktraces