search for: ww_mutex_lock

...ys/kernel/hung_task_timeout_secs" disables this message. [354073.738332] Xorg D 0 920 854 0x00404004 [354073.738334] Call Trace: [354073.738340] __schedule+0x2ba/0x650 [354073.738342] schedule+0x2d/0x90 [354073.738343] schedule_preempt_disabled+0xe/0x10 [354073.738345] __ww_mutex_lock.isra.11+0x3e0/0x750 [354073.738346] __ww_mutex_lock_slowpath+0x16/0x20 [354073.738347] ww_mutex_lock+0x34/0x50 [354073.738352] ttm_eu_reserve_buffers+0x1f9/0x2e0 [ttm] [354073.738356] qxl_release_reserve_list+0x67/0x150 [qxl] [354073.738358] ? qxl_bo_pin+0xaa/0x190 [qxl] [354073.738359] qxl_c...

...ys/kernel/hung_task_timeout_secs" disables this message. [354073.738332] Xorg D 0 920 854 0x00404004 [354073.738334] Call Trace: [354073.738340] __schedule+0x2ba/0x650 [354073.738342] schedule+0x2d/0x90 [354073.738343] schedule_preempt_disabled+0xe/0x10 [354073.738345] __ww_mutex_lock.isra.11+0x3e0/0x750 [354073.738346] __ww_mutex_lock_slowpath+0x16/0x20 [354073.738347] ww_mutex_lock+0x34/0x50 [354073.738352] ttm_eu_reserve_buffers+0x1f9/0x2e0 [ttm] [354073.738356] qxl_release_reserve_list+0x67/0x150 [qxl] [354073.738358] ? qxl_bo_pin+0xaa/0x190 [qxl] [354073.738359] qxl_c...

...ector+0x2a/0x60 [drm_kms_helper] but task is already holding lock: 00000000942e28e2 (crtc_ww_class_mutex){+.+.}, at: drm_modeset_backoff+0x8e/0x1c0 [drm] which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (crtc_ww_class_mutex){+.+.}: ww_mutex_lock+0x43/0x80 drm_modeset_lock+0x71/0x130 [drm] drm_helper_probe_single_connector_modes+0x7d/0x6b0 [drm_kms_helper] drm_setup_crtcs+0x15e/0xc90 [drm_kms_helper] __drm_fb_helper_initial_config_and_unlock+0x29/0x480 [drm_kms_helper] nouveau_fbcon_init+0x138/0x1a0 [nouve...

On 05.09.19 10:14, Gerd Hoffmann wrote: > On Tue, Aug 06, 2019 at 09:00:10PM +0300, Jaak Ristioja wrote: >> Hello! >> >> I'm writing to report a crash in the QXL / DRM code in the Linux kernel. >> I originally filed the issue on LaunchPad and more details can be found >> there, although I doubt whether these details are useful. > > Any change with kernel

On 05.09.19 10:14, Gerd Hoffmann wrote: > On Tue, Aug 06, 2019 at 09:00:10PM +0300, Jaak Ristioja wrote: >> Hello! >> >> I'm writing to report a crash in the QXL / DRM code in the Linux kernel. >> I originally filed the issue on LaunchPad and more details can be found >> there, although I doubt whether these details are useful. > > Any change with kernel

...r more than 120 seconds. Not tainted 5.0.0-13-generic #14-Ubuntu "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Xorg D 0 879 790 0x00400004 Call Trace: __schedule+0x2d0/0x840 schedule+0x2c/0x70 schedule_preempt_disabled+0xe/0x10 __ww_mutex_lock.isra.11+0x3e0/0x750 __ww_mutex_lock_slowpath+0x16/0x20 ww_mutex_lock+0x34/0x50 ttm_eu_reserve_buffers+0x1f9/0x2e0 [ttm] qxl_release_reserve_list+0x67/0x150 [qxl] ? qxl_bo_pin+0x11d/0x200 [qxl] qxl_cursor_atomic_update+0x1b0/0x2e0 [qxl] drm_atomic_helper_commit_planes+0xb9/0x220 [drm_kms_help...

...r more than 120 seconds. Not tainted 5.0.0-13-generic #14-Ubuntu "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Xorg D 0 879 790 0x00400004 Call Trace: __schedule+0x2d0/0x840 schedule+0x2c/0x70 schedule_preempt_disabled+0xe/0x10 __ww_mutex_lock.isra.11+0x3e0/0x750 __ww_mutex_lock_slowpath+0x16/0x20 ww_mutex_lock+0x34/0x50 ttm_eu_reserve_buffers+0x1f9/0x2e0 [ttm] qxl_release_reserve_list+0x67/0x150 [qxl] ? qxl_bo_pin+0x11d/0x200 [qxl] qxl_cursor_atomic_update+0x1b0/0x2e0 [qxl] drm_atomic_helper_commit_planes+0xb9/0x220 [drm_kms_help...

...ot; > disables this message. > [354073.738332] Xorg D 0 920 854 0x00404004 > [354073.738334] Call Trace: > [354073.738340] __schedule+0x2ba/0x650 > [354073.738342] schedule+0x2d/0x90 > [354073.738343] schedule_preempt_disabled+0xe/0x10 > [354073.738345] __ww_mutex_lock.isra.11+0x3e0/0x750 > [354073.738346] __ww_mutex_lock_slowpath+0x16/0x20 > [354073.738347] ww_mutex_lock+0x34/0x50 > [354073.738352] ttm_eu_reserve_buffers+0x1f9/0x2e0 [ttm] > [354073.738356] qxl_release_reserve_list+0x67/0x150 [qxl] > [354073.738358] ? qxl_bo_pin+0xaa/0x190 [qx...

...ot; > disables this message. > [354073.738332] Xorg D 0 920 854 0x00404004 > [354073.738334] Call Trace: > [354073.738340] __schedule+0x2ba/0x650 > [354073.738342] schedule+0x2d/0x90 > [354073.738343] schedule_preempt_disabled+0xe/0x10 > [354073.738345] __ww_mutex_lock.isra.11+0x3e0/0x750 > [354073.738346] __ww_mutex_lock_slowpath+0x16/0x20 > [354073.738347] ww_mutex_lock+0x34/0x50 > [354073.738352] ttm_eu_reserve_buffers+0x1f9/0x2e0 [ttm] > [354073.738356] qxl_release_reserve_list+0x67/0x150 [qxl] > [354073.738358] ? qxl_bo_pin+0xaa/0x190 [qx...

...ys/kernel/hung_task_timeout_secs" disables this message. [124212.551329] Xorg D 0 797 773 0x00404004 [124212.551331] Call Trace: [124212.551336] __schedule+0x2b9/0x6c0 [124212.551337] schedule+0x42/0xb0 [124212.551338] schedule_preempt_disabled+0xe/0x10 [124212.551340] __ww_mutex_lock.isra.0+0x261/0x7f0 [124212.551345] ? ttm_bo_init+0x6b/0x100 [ttm] [124212.551346] __ww_mutex_lock_slowpath+0x16/0x20 [124212.551347] ww_mutex_lock+0x38/0x90 [124212.551352] ttm_eu_reserve_buffers+0x1cc/0x2f0 [ttm] [124212.551371] qxl_release_reserve_list+0x6d/0x150 [qxl] [124212.551373] ? qxl...

.... > > [354073.738332] Xorg D 0 920 854 0x00404004 > > [354073.738334] Call Trace: > > [354073.738340] __schedule+0x2ba/0x650 > > [354073.738342] schedule+0x2d/0x90 > > [354073.738343] schedule_preempt_disabled+0xe/0x10 > > [354073.738345] __ww_mutex_lock.isra.11+0x3e0/0x750 > > [354073.738346] __ww_mutex_lock_slowpath+0x16/0x20 > > [354073.738347] ww_mutex_lock+0x34/0x50 > > [354073.738352] ttm_eu_reserve_buffers+0x1f9/0x2e0 [ttm] > > [354073.738356] qxl_release_reserve_list+0x67/0x150 [qxl] > > [354073.738358] ?...

...7411] __schedule+0x322/0xaf0 > [ 861.528089] schedule+0x33/0x90 > [ 861.528758] rpm_resume+0x19c/0x850 > [ 861.529399] ? finish_wait+0x90/0x90 > [ 861.530073] __pm_runtime_resume+0x4e/0x90 > [ 861.530798] nouveau_connector_detect+0x7e/0x510 [nouveau] > [ 861.531459] ? ww_mutex_lock+0x47/0x80 > [ 861.532097] ? ww_mutex_lock+0x47/0x80 > [ 861.532819] ? drm_modeset_lock+0x88/0x130 [drm] > [ 861.533481] drm_helper_probe_detect_ctx+0xa0/0x100 [drm_kms_helper] > [ 861.534127] drm_helper_hpd_irq_event+0xa4/0x120 [drm_kms_helper] > [ 861.534940] nouveau_conne...

...ot; > disables this message. > [124212.551329] Xorg D 0 797 773 0x00404004 > [124212.551331] Call Trace: > [124212.551336] __schedule+0x2b9/0x6c0 > [124212.551337] schedule+0x42/0xb0 > [124212.551338] schedule_preempt_disabled+0xe/0x10 > [124212.551340] __ww_mutex_lock.isra.0+0x261/0x7f0 > [124212.551345] ? ttm_bo_init+0x6b/0x100 [ttm] > [124212.551346] __ww_mutex_lock_slowpath+0x16/0x20 > [124212.551347] ww_mutex_lock+0x38/0x90 > [124212.551352] ttm_eu_reserve_buffers+0x1cc/0x2f0 [ttm] > [124212.551371] qxl_release_reserve_list+0x6d/0x150 [qx...

....526751] Call Trace: [ 861.527411] __schedule+0x322/0xaf0 [ 861.528089] schedule+0x33/0x90 [ 861.528758] rpm_resume+0x19c/0x850 [ 861.529399] ? finish_wait+0x90/0x90 [ 861.530073] __pm_runtime_resume+0x4e/0x90 [ 861.530798] nouveau_connector_detect+0x7e/0x510 [nouveau] [ 861.531459] ? ww_mutex_lock+0x47/0x80 [ 861.532097] ? ww_mutex_lock+0x47/0x80 [ 861.532819] ? drm_modeset_lock+0x88/0x130 [drm] [ 861.533481] drm_helper_probe_detect_ctx+0xa0/0x100 [drm_kms_helper] [ 861.534127] drm_helper_hpd_irq_event+0xa4/0x120 [drm_kms_helper] [ 861.534940] nouveau_connector_hotplug+0x98/0x120 [...

...938000 CR3: 000000073720a003 CR4: 00000000003606f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ? _cond_resched+0x15/0x30 nouveau_connector_detect+0x2ce/0x520 [nouveau] ? _cond_resched+0x15/0x30 ? ww_mutex_lock+0x12/0x40 drm_helper_probe_detect_ctx+0x8b/0xe0 [drm_kms_helper] drm_helper_hpd_irq_event+0xa8/0x120 [drm_kms_helper] nouveau_display_hpd_work+0x2a/0x60 [nouveau] process_one_work+0x187/0x340 worker_thread+0x2e/0x380 ? pwq_unbound_release_workfn+0xd0/0xd0 kthread+0x112/0x130 ? kthread_creat...

From: Thierry Reding <treding at nvidia.com> struct device is forward-declared twice. Remove the second instance. Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk> Signed-off-by: Thierry Reding <treding at nvidia.com> --- include/drm/drm_prime.h | 2 -- 1 file changed, 2 deletions(-) diff --git a/include/drm/drm_prime.h b/include/drm/drm_prime.h index

This is the latest version of https://patchwork.freedesktop.org/series/46815/ With a bunch of fixes to the new fb_helper to prevent it from breaking module loading/unloading with nouveau. Also; lots of documentation fixes and one fix in response to a kbuild bot. Lyude Paul (8): drm/nouveau: Fix bogus drm_kms_helper_poll_enable() placement drm/nouveau: Enable polling even if we have runtime

Next version of https://patchwork.freedesktop.org/series/46815/ Same as previous version, but some small changes made to commit messages and acks/rbs have been added Lyude Paul (5): drm/nouveau: Fix bogus drm_kms_helper_poll_enable() placement drm/nouveau: Remove duplicate poll_enable() in pmops_runtime_suspend() drm/nouveau: Fix deadlock with fb_helper with async RPM requests

Latest version of https://patchwork.freedesktop.org/series/46815/ with some significant improvements: - I finally figured out a clean way to do this entirely with runtime PM helpers, no avoiding grabbing refs required! - Since this new method removes the need for a lot of the other changes I made (although we probably still want those changes, but not for fixing these deadlocks)

Latest version of https://patchwork.freedesktop.org/series/46815/ , with one small change re: ilia Lyude Paul (5): drm/nouveau: Fix bogus drm_kms_helper_poll_enable() placement drm/nouveau: Remove duplicate poll_enable() in pmops_runtime_suspend() drm/nouveau: Fix deadlock with fb_helper with async RPM requests drm/nouveau: Use pm_runtime_get_noresume() in connector_detect()