On Friday, September 23, 2016 4:55:33 PM EDT Andy Furniss wrote: > Christian König wrote: > > Am 22.09.2016 um 23:54 schrieb Andy Furniss: > >> Marek Olšák wrote: > >>> This breaks Tonga such that it hangs. Reproducible quickly with: > >>> > >>> R600_DEBUG=testdma glxgears > >>> > >>> It's a randomized test that runs forever. It should hang within 2 > >>> seconds. > >> > >> So what is the status of this now? > > > > The status is that I'm hammering my head on the desk for two weeks now > > what the heck is going wrong here. > > Oh, OK, I was just checking no one thought it was fixed really. > > > What I've found so far is that a VM update command doesn't have the > > result it should have, but I absolutely don't understand what happens > > here. > > > > The good news is that it's 100% reproducible and I already found and > > fixed two bugs. > > > > If you have any idea or more testing results what is going wrong here > > please let me know. > > I guess, you already did it anyway or it doesn't help, but > > R600_DEBUG=testdma,check_vm glxgears > > Does catch a vmfault and output to ddebug_dumps. > It initially saves me from locking, though I will lock on repeated runs. > > > If we can't fix this before the 4.9 release we are just going to revert > > the patch causing this. > > > > Regards, > > Christian. > >
This is directly related to my thread on [amdgpu][CIK] drm-next-4.9-wip - piglit test - max-texture-size - GPU deadlock Using Linus master kernel w/o drm-next-4.9-wip: I cannot wedge GPU, the amdgpu kernel driver correctly throws errors if I've run out of memory vs crashing GPU. as CIK doesn't have SDMA enabled in Mesa, I cannot reproduce Andy's test case, using max-texture-size can however. Thanks, Shawn > >> R600_DEBUG=testdma glxgears isn't a test I've run on my r9285 tonga > >> until I, by luck, saw this. > >> > >> On agddf 4.9-wip at post time it did hang/reboot after 2 seconds. > >> > >> On every update since it's still hung though now it takes longer. > >> > >> Todays update tested both on head and reset on to the drm-next tag > >> still hang. > >> > >> Going back over older 4.9-wips it's one built on 26th August that is > >> the first not to hang. > >> > >> > >> > >> _______________________________________________ > >> amd-gfx mailing list > >> [email protected] > >> https://lists.freedesktop.org/mailman/listinfo/amd-gfx > > _______________________________________________ > amd-gfx mailing list > [email protected] > https://lists.freedesktop.org/mailman/listinfo/amd-gfx _______________________________________________ amd-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/amd-gfx
