Re: vc4: NULL pointer dereference in drm_client_dev_hotplug

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Hi, Stefan,


On 09/30/2018 10:38 PM, Stefan Wahren wrote:
Hi Sergey,

Sergey Suloev <ssuloev@xxxxxxxxxxxxx> 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:drm_setup_crtcs [drm_kms_helper]] connector 50
enabled? yes
[    2.868271] [drm:drm_setup_crtcs [drm_kms_helper]] looking for
cmdline mode on connector 29
[    2.868308] [drm:drm_setup_crtcs [drm_kms_helper]] looking for
preferred mode on connector 29 0
[    2.868343] [drm:drm_setup_crtcs [drm_kms_helper]] found mode 1280x1024
[    2.868381] [drm:drm_setup_crtcs [drm_kms_helper]] looking for
cmdline mode on connector 50
[    2.868417] [drm:drm_setup_crtcs [drm_kms_helper]] looking for
preferred mode on connector 50 0
[    2.868465] [drm:drm_setup_crtcs [drm_kms_helper]] found mode 1920x1440
[    2.868500] [drm:drm_setup_crtcs [drm_kms_helper]] picking CRTCs for
2048x2048 config
[    2.868561] [drm:drm_setup_crtcs [drm_kms_helper]] desired mode
1280x1024 set on crtc 95 (0,0)
[    2.868673] [drm:drm_mode_object_get [drm]] OBJ ID: 29 (2)
[    2.868709] [drm:drm_setup_crtcs [drm_kms_helper]] desired mode
1920x1440 set on crtc 74 (0,0)
[    2.868790] [drm:drm_mode_object_get [drm]] OBJ ID: 50 (2)
[    2.868832] [drm:drm_fb_helper_generic_probe [drm_kms_helper]]
surface width(1920), height(2880) and bpp(32)
[    3.001470] [drm:drm_internal_framebuffer_create [drm]] bad
framebuffer height 2880, should be >= 0 && <= 2048
[    3.001650] vc4-drm soc:gpu: [drm:drm_fb_helper_fbdev_setup
[drm_kms_helper]] *ERROR* Failed to set fbdev configuration

does this config work with 4.18?

I have checked with the tag v4.18 as per your request and I can confirm that the issue does not exists in 4.18.

Sergey
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