Re: [PATCH] drm/amdgpu: fix NULL pointer dereference when run App with DRI_PRIME=1

2018-05-28 Thread Zhang, Jerry (Junwei)
On 05/25/2018 07:23 PM, Christian König wrote: Am 25.05.2018 um 11:51 schrieb Zhang, Jerry (Junwei): On 05/25/2018 05:35 PM, Christian König wrote: Am 25.05.2018 um 10:23 schrieb Zhang, Jerry (Junwei): On 05/25/2018 03:54 PM, Christian König wrote: Am 25.05.2018 um 09:20 schrieb Zhang, Jerry

Re: [PATCH] drm/amdgpu: fix NULL pointer dereference when run App with DRI_PRIME=1

2018-05-25 Thread Christian König
Am 25.05.2018 um 11:51 schrieb Zhang, Jerry (Junwei): On 05/25/2018 05:35 PM, Christian König wrote: Am 25.05.2018 um 10:23 schrieb Zhang, Jerry (Junwei): On 05/25/2018 03:54 PM, Christian König wrote: Am 25.05.2018 um 09:20 schrieb Zhang, Jerry (Junwei): On 05/25/2018 02:44 PM, Christian

Re: [PATCH] drm/amdgpu: fix NULL pointer dereference when run App with DRI_PRIME=1

2018-05-25 Thread Zhang, Jerry (Junwei)
On 05/25/2018 05:35 PM, Christian König wrote: Am 25.05.2018 um 10:23 schrieb Zhang, Jerry (Junwei): On 05/25/2018 03:54 PM, Christian König wrote: Am 25.05.2018 um 09:20 schrieb Zhang, Jerry (Junwei): On 05/25/2018 02:44 PM, Christian König wrote: NAK, that probably just fixed the symptom

Re: [PATCH] drm/amdgpu: fix NULL pointer dereference when run App with DRI_PRIME=1

2018-05-25 Thread Christian König
Am 25.05.2018 um 10:23 schrieb Zhang, Jerry (Junwei): On 05/25/2018 03:54 PM, Christian König wrote: Am 25.05.2018 um 09:20 schrieb Zhang, Jerry (Junwei): On 05/25/2018 02:44 PM, Christian König wrote: NAK, that probably just fixed the symptom but not the underlying problem. Somebody is

Re: [PATCH] drm/amdgpu: fix NULL pointer dereference when run App with DRI_PRIME=1

2018-05-25 Thread Zhang, Jerry (Junwei)
On 05/25/2018 03:54 PM, Christian König wrote: Am 25.05.2018 um 09:20 schrieb Zhang, Jerry (Junwei): On 05/25/2018 02:44 PM, Christian König wrote: NAK, that probably just fixed the symptom but not the underlying problem. Somebody is accessing the page array when it should never be accessed.

Re: [PATCH] drm/amdgpu: fix NULL pointer dereference when run App with DRI_PRIME=1

2018-05-25 Thread Christian König
Am 25.05.2018 um 09:20 schrieb Zhang, Jerry (Junwei): On 05/25/2018 02:44 PM, Christian König wrote: NAK, that probably just fixed the symptom but not the underlying problem. Somebody is accessing the page array when it should never be accessed. If prime import as GTT bo by default(now it's

Re: [PATCH] drm/amdgpu: fix NULL pointer dereference when run App with DRI_PRIME=1

2018-05-25 Thread Zhang, Jerry (Junwei)
On 05/25/2018 02:44 PM, Christian König wrote: NAK, that probably just fixed the symptom but not the underlying problem. Somebody is accessing the page array when it should never be accessed. If prime import as GTT bo by default(now it's CPU bo), it would happens quickly when GTT sg bo

Re: [PATCH] drm/amdgpu: fix NULL pointer dereference when run App with DRI_PRIME=1

2018-05-25 Thread Christian König
NAK, that probably just fixed the symptom but not the underlying problem. Somebody is accessing the page array when it should never be accessed. How did you manage to trigger this? Regards, Christian. Am 25.05.2018 um 07:41 schrieb Junwei Zhang: [ 632.679861] BUG: unable to handle kernel

[PATCH] drm/amdgpu: fix NULL pointer dereference when run App with DRI_PRIME=1

2018-05-24 Thread Junwei Zhang
[ 632.679861] BUG: unable to handle kernel NULL pointer dereference at (null) [ 632.679892] IP: drm_prime_sg_to_page_addr_arrays+0x52/0xb0 [drm] [ 632.680011] Call Trace: [ 632.680082] amdgpu_ttm_tt_populate+0x3e/0xa0 [amdgpu] [ 632.680092] ttm_tt_populate.part.7+0x22/0x60 [amdttm] [