On Thu, Jun 3, 2021 at 11:51 PM Linus Walleij <linus.walleij@xxxxxxxxxx> wrote: > > Hi Qiang, Hey Linus, > I am using Lima on the ST-Ericsson U8500 SoC. It is one > of the very earliest versions of MALI 400 MP. It mostly works > on the mobile phones I have using PostmarkeOS and > the Phosh UI (Wayland with MESA), but now I have an issue with > one single specimen. > > I have this bug in my dmesg and after this the graphics > start to act weird: > > [ 48.662336] lima a0300000.gpu: mmu page fault at 0x2020400 from bus > id 0 of type read on ppmmu0 > [ 48.662464] lima a0300000.gpu: fail to save task state from phoc > pid 1581: error task list is full > [ 48.662481] lima a0300000.gpu: pp task error 0 int_state=0 status=1 > [ 48.662494] lima a0300000.gpu: mmu resume It's not a kernel bug, GPU MMU just catched invalid memory access by fragment shader. It's likely a mesa bug. What mesa version do you use? > In interrupts: > > 75: 5 0 GIC-0 147 Level gp > 76: 0 0 GIC-0 146 Level gpmmu > 77: 3 0 GIC-0 145 Level pp0 > 78: 1 0 GIC-0 144 Level ppmmu0 > > My UI definitely want to render some more stuff so it gets > stuck here. It's stuck because context is marked as tainted and all the jobs that are submitted from this context afterwards are essentially no-op. > Any hints on how to troubleshoot this? Please make sure that you still can reproduce the bug with mesa from git main (ex-master), if it's still reproducible please open an issue at https://gitlab.freedesktop.org/mesa/mesa/issues Please also try to capture an apitrace of the failing app. See "Bug Reporting" on [1]. [1] https://docs.mesa3d.org/drivers/lima.html > Yours, > Linus Walleij > _______________________________________________ > lima mailing list > lima@xxxxxxxxxxxxxxxxxxxxx > https://lists.freedesktop.org/mailman/listinfo/lima
