On 2013.07.10 at 11:29 +0200, Maarten Lankhorst wrote: > Op 10-07-13 11:22, Markus Trippelsdorf schreef: > > By simply copy/pasting a big document under LibreOffice my system hangs > > itself up. Only a hard reset gets it working again. > > see also: https://bugs.freedesktop.org/show_bug.cgi?id=66551 > > > > I've bisected the issue to: > > > > commit ecff665f5e3f1c6909353e00b9420e45ae23d995 > > Author: Maarten Lankhorst <m.b.lankhorst@xxxxxxxxx> > > Date: Thu Jun 27 13:48:17 2013 +0200 > > > > drm/ttm: make ttm reservation calls behave like reservation calls > > > > This commit converts the source of the val_seq counter to > > the ww_mutex api. The reservation objects are converted later, > > because there is still a lockdep splat in nouveau that has to > > resolved first. > > > > Signed-off-by: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxx> > > Reviewed-by: Jerome Glisse <jglisse@xxxxxxxxxx> > > Signed-off-by: Dave Airlie <airlied@xxxxxxxxxx> > Hey, > > Can you try current head with CONFIG_PROVE_LOCKING set and post the > lockdep splat from dmesg, if any? If there is any locking issue > lockdep should warn about it. Lockdep will turn itself off after the > first splat, so if the lockdep splat happens before running the > affected parts those will have to be fixed first. There was an unrelated EDAC lockdep splat, so I simply disabled it. This is what I get: Jul 10 11:40:44 x4 kernel: ================================================ Jul 10 11:40:44 x4 kernel: [ BUG: lock held when returning to user space! ] Jul 10 11:40:44 x4 kernel: 3.10.0-08587-g496322b #35 Not tainted Jul 10 11:40:44 x4 kernel: ------------------------------------------------ Jul 10 11:40:44 x4 kernel: X/211 is leaving the kernel with locks still held! Jul 10 11:40:44 x4 kernel: 2 locks held by X/211: Jul 10 11:40:44 x4 kernel: #0: (reservation_ww_class_acquire){+.+.+.}, at: [<ffffffff813279f0>] radeon_bo_list_validate+0x20/0xd0 Jul 10 11:40:44 x4 kernel: #1: (reservation_ww_class_mutex){+.+.+.}, at: [<ffffffff81309306>] ttm_eu_reserve_buffers+0x126/0x4b0 Jul 10 11:40:52 x4 kernel: SysRq : Emergency Sync Jul 10 11:40:53 x4 kernel: Emergency Sync complete -- Markus _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
