Re: vc4: NULL pointer dereference in drm_client_dev_hotplug

Hi, > Andreas Färber hat am 2. Oktober 2018 um 16:33 geschrieben: > > > Hi Stefan and Daniel, > > Am 02.10.18 um 11:48 schrieb Stefan Wahren: > > Hi Daniel, > SNIP > > personally i didn't know this option before this issue, but i cannot > > speak for all the distributions. I checked Raspbian a

Re: vc4: NULL pointer dereference in drm_client_dev_hotplug

Hi Stefan, > [add Peter and Andreas] > > > Am 02.10.2018 um 10:44 schrieb Daniel Vetter: > > On Mon, Oct 01, 2018 at 06:21:23PM +0200, Stefan Wahren wrote: > >> Hi, > >> > >>> Sergey Suloev hat am 1. Oktober 2018 um 12:17 > >>> geschrieben: > >>> > >>> > >>> Hi, Stefan, > >>> > >>> > >>> On 09/3

Re: vc4: NULL pointer dereference in drm_client_dev_hotplug

Hi Stefan and Daniel, Am 02.10.18 um 11:48 schrieb Stefan Wahren: > Hi Daniel, > > [add Peter and Andreas] > > Am 02.10.2018 um 10:44 schrieb Daniel Vetter: >> On Mon, Oct 01, 2018 at 06:21:23PM +0200, Stefan Wahren wrote: Sergey Suloev hat am 1. Oktober 2018 um 12:17 geschrieben: >>

Re: vc4: NULL pointer dereference in drm_client_dev_hotplug

Hi Daniel, [add Peter and Andreas] Am 02.10.2018 um 10:44 schrieb Daniel Vetter: > On Mon, Oct 01, 2018 at 06:21:23PM +0200, Stefan Wahren wrote: >> Hi, >> >>> Sergey Suloev hat am 1. Oktober 2018 um 12:17 >>> geschrieben: >>> >>> >>> Hi, Stefan, >>> >>> >>> On 09/30/2018 10:38 PM, Stefan Wahr

Re: vc4: NULL pointer dereference in drm_client_dev_hotplug

On Mon, Oct 01, 2018 at 06:21:23PM +0200, Stefan Wahren wrote: > Hi, > > > Sergey Suloev hat am 1. Oktober 2018 um 12:17 > > geschrieben: > > > > > > Hi, Stefan, > > > > > > On 09/30/2018 10:38 PM, Stefan Wahren wrote: > > > Hi Sergey, > > > > > >> Sergey Suloev hat am 30. September 2018 um

Re: vc4: NULL pointer dereference in drm_client_dev_hotplug

Hi, Stefan, On 09/30/2018 10:38 PM, Stefan Wahren wrote: Hi Sergey, Sergey Suloev hat am 30. September 2018 um 15:24 geschrieben: Here is my log [    2.868157] [drm:drm_setup_crtcs [drm_kms_helper]] connector 29 enabled? yes [    2.868199] [drm:drm_setup_crtcs [drm_kms_helper]] connector

Re: vc4: NULL pointer dereference in drm_client_dev_hotplug

Hi, > Sergey Suloev hat am 1. Oktober 2018 um 12:17 > geschrieben: > > > Hi, Stefan, > > > On 09/30/2018 10:38 PM, Stefan Wahren wrote: > > Hi Sergey, > > > >> Sergey Suloev hat am 30. September 2018 um 15:24 > >> geschrieben: > >> > >> > >> Here is my log > >> > >> [    2.868157] [drm:drm

Re: vc4: NULL pointer dereference in drm_client_dev_hotplug

Hi,Noralf, I was hoping Eric would look at it and so I didn't include your email to CC. From now on as you can be a backup person I will always include you. Thanks for the fix. Can you also explain which config option(s) causes this problem ? Because the default config for arm64 works well.

Re: vc4: NULL pointer dereference in drm_client_dev_hotplug

Here is my log [    2.868157] [drm:drm_setup_crtcs [drm_kms_helper]] connector 29 enabled? yes [    2.868199] [drm:drm_setup_crtcs [drm_kms_helper]] connector 44 enabled? no [    2.868234] [drm:drm_setup_crtcs [drm_kms_helper]] connector 50 enabled? yes [    2.868271] [drm:drm_setup_crtcs [drm

Re: vc4: NULL pointer dereference in drm_client_dev_hotplug

I have no idea where 2880 is coming from, my monitor has resolution 1280 * 1024. Is this a DRM bug ? On 09/30/2018 03:29 PM, Noralf Trønnes wrote: Den 29.09.2018 22.52, skrev Sergey Suloev: Hi, the last error message seems to come from the following config option: CONFIG_DRM_FBDEV_OVERALL

Re: vc4: NULL pointer dereference in drm_client_dev_hotplug

Hi, Noralf, I have tested you patch with 4.19-rc5. The issue has changed from oops into the following error message in boot log: [    3.501261] vc4-drm soc:gpu: [drm:drm_fb_helper_fbdev_setup [drm_kms_helper]] *ERROR* Failed to set fbdev configuration The console output stops at this mome

Re: vc4: NULL pointer dereference in drm_client_dev_hotplug

Hi, the last error message seems to come from the following config option: CONFIG_DRM_FBDEV_OVERALLOC=200 Changing it to the default value fixes the issue: CONFIG_DRM_FBDEV_OVERALLOC=100 Sergey On 09/29/2018 08:14 PM, Noralf Trønnes wrote: Den 28.09.2018 23.01, skrev Stefan Wahren: Hi,

Re: vc4: NULL pointer dereference in drm_client_dev_hotplug

Hi Sergey, > Sergey Suloev hat am 30. September 2018 um 15:24 > geschrieben: > > > Here is my log > > [    2.868157] [drm:drm_setup_crtcs [drm_kms_helper]] connector 29 > enabled? yes > [    2.868199] [drm:drm_setup_crtcs [drm_kms_helper]] connector 44 > enabled? no > [    2.868234] [drm:dr

Re: vc4: NULL pointer dereference in drm_client_dev_hotplug

Den 30.09.2018 15.24, skrev Sergey Suloev: Here is my log [    2.868157] [drm:drm_setup_crtcs [drm_kms_helper]] connector 29 enabled? yes [    2.868199] [drm:drm_setup_crtcs [drm_kms_helper]] connector 44 enabled? no [    2.868234] [drm:drm_setup_crtcs [drm_kms_helper]] connector 50 enabled?

Re: vc4: NULL pointer dereference in drm_client_dev_hotplug

Den 29.09.2018 22.52, skrev Sergey Suloev: Hi, the last error message seems to come from the following config option: CONFIG_DRM_FBDEV_OVERALLOC=200 Changing it to the default value fixes the issue: CONFIG_DRM_FBDEV_OVERALLOC=100 If you enable drm debug (drm.debug=0xff), you get some more

Re: vc4: NULL pointer dereference in drm_client_dev_hotplug

Den 28.09.2018 23.01, skrev Stefan Wahren: Hi, Sergey Suloev already reported this NULL pointer dereference [1]. Now he was able to provide a Kernel config and i'm able to reproduce it with a Raspberry Pi 3 (arm64) and Linux 4.19-rc5. It seems like a invalid config [2] for vc4, but neverthel