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 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 creation rather than next cs validation. >>>>> >>>>> Since ttm_sg_tt_init() only allocates gtt->ttm.dma_address if sg >>>>> bo is >>>>> created, it would fail to access ttm->pages when ttm populate. >>>> >>>> And exactly that's the problem, and imported BO should never populate. >>>> >>>>> >>>>> current error happens in ttm populate from cs validation, the sg >>>>> bo is >>>>> imported from exporter. >>>>> >>>>>> >>>>>> How did you manage to trigger this? >>>>> >>>>> PRI_PRIME=1 with Unigine heaven. >>>> >>>> Going to give that a try, but the last time I check that worked as >>>> expected. >>> >>> FYI. >>> PRI_PRIME=1 glxinfo will not trigger that, but the game does. >> >> Just tested and it works perfectly fine. >> >> Is that on the closed stack or the open stack? > > I used unified driver(latest 18.20 build) + drm-next kernel, installed > as all open stack on A+A platform. > (issue was found by 18.20 build, all open stack(dkms driver)) > > BTW, How did you get the UMD? apt-get or build by yourself? That's self build Mesa+libdrm. Do you have the apt url and/or package versions at hand you used for the test? Christian. > > > Jerry
