-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 On Wed, Nov 16, 2016 at 10:40:30AM +0100, Marek Marczykowski-Górecki wrote: > On Tue, Nov 15, 2016 at 10:01:52PM -0500, Jean-Philippe Ouellet wrote: > > On Tue, Nov 15, 2016 at 6:18 PM, Marek Marczykowski-Górecki > > <[email protected]> wrote: > > > Did you get any other message like this? It hangs on getting some lock, > > > so either some function didn't released it, or is hanging on something > > > else while holding the lock. In the later case you should see more > > > (different) messages like this. > > > > Err yes. Bad omission on my part. > > The first one is different: > > > [ 3.785030] BUG: unable to handle kernel NULL pointer dereference at > > 0000000000000400 > > [ 3.785041] IP: [<ffffffff8122d3e0>] > > mem_cgroup_node_nr_lru_pages+0x20/0x40 > > [ 3.477995] CPU: 3 PID: 58 Comm: kswapd0 Tainted: G O > > 4.8.7-11.pvops.qubes.x86_64 #1 > > [ 3.478096] Call Trace: > > [ 3.478105] [<ffffffff811e0d9a>] count_shadow_nodes+0x9a/0xa0 > > [ 3.478113] [<ffffffff811c36c9>] shrink_slab.part.42+0x119/0x3e0 > > [ 3.478120] [<ffffffff811c83dc>] shrink_node+0x22c/0x320 > > [ 3.479775] [<ffffffff811c927c>] kswapd+0x32c/0x700 > > [ 3.479775] [<ffffffff811c8f50>] ? > > mem_cgroup_shrink_node+0x180/0x180 > > [ 3.479775] [<ffffffff810c1b08>] kthread+0xd8/0xf0 > > [ 3.479775] [<ffffffff817a10bf>] ret_from_fork+0x1f/0x40 > > [ 3.479775] [<ffffffff810c1a30>] ? > > kthread_create_on_node+0x190/0x190 > > I guess it was holding some lock while crashing.
I just hit exactly the same on 4.8.10. Still no idea what is going on. There is exactly 100 commits touching mm/memcontrol.c since v4.4, a little to much for bisection given the bug being hard to reproduce. Reported it here: https://bugzilla.kernel.org/show_bug.cgi?id=189181 - -- Best Regards, Marek Marczykowski-Górecki Invisible Things Lab A: Because it messes up the order in which people normally read text. Q: Why is top-posting such a bad thing? -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQEcBAEBCAAGBQJYOaX1AAoJENuP0xzK19csJkQH/iIDE1YFpWkYqE8q+TZpwNpm TavpTWq+xIe7YorhegCseQV5RB99T0YqPoQ9FV7OBtObGiX/YLlisZYnEXSc1+Y6 f0UJ9dX94DrJaEhxzrcVTIKMH8+Gc/ZhqqqkKjXMapV7Ht31P2B6z4vqLuNcSyXS aXqTv9mGPV6yK2zqgUgqYhq/Wz++jycTqbXm2QjNqXZeo9wuI6JoqbIL04fLayW6 H+wBmupu7Ieb0zpT2mmsvnkx4cFXOWfaaM6Bb+M8/shxGFYWHoMhYcyMQ6Flr2NR uuaboRzmwVXl/L9CzCD1fgaznowuyDo+iy9gVlm6vaVojFKjC6QTyjXbIKZmzkM= =N0c9 -----END PGP SIGNATURE----- -- You received this message because you are subscribed to the Google Groups "qubes-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/qubes-devel/20161126151043.GA22458%40mail-itl. For more options, visit https://groups.google.com/d/optout.
