Am 07.04.2017 01:23 schrieb Andrea Arcangeli:
I'm also getting kernel hangs every couple of days. For me it's still not fixed here in 4.11-rc5. It's hard to reproduce, the best reproducer is to build lineageos 14.1 on host while running LTP in a guest to stress the guest VM. Initially I thought it was related to the fact I upgraded the xf86 intel driver just a few weeks ago (I deferred any upgrade of the userland intel driver since last July because of a regression that never got fixed and broke xterm for me). After I found a workaround for the userland regression (appended at the end for reference) I started getting kernel hangs but they are separate issues as far as I can tell. It's not well tested so beware... (it survived a couple of builds and some VM reclaim but that's it). The first patch 1/5 is the potential fix for the i915 kernel hang. The rest are incremental improvements. And I've no great solution for when the shrinker was invoked with the struct_mutex held and and recurse on the lock. I don't think we can possibly wait in such case (other than flush work that the second patch does) but then practically it shouldn't be a big deal, the big RAM eater is unlikely to be i915 when the system is low on memory.
FWIW without having insight here, -rc6 seems to be good. No disturbing gpu hangs under load so far. _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
