Kernel panic: Sleeping thread owns a non-sleepable lock

[trombonehero]

Running drm-next-kmod-g20171006_1 with recent-ish -CURRENT (actually a slightly modified -CURRENT), I'm seeing a "Sleeping thread owns a non-sleepable lock" panic after a bunch of warnings from drm_atomic.c:

Jan  8 08:48:19 tony kernel: WARNING !state->acquire_ctx failed at drm_atomic.c:634
Jan  8 08:48:19 tony kernel: WARNING !mutex_is_locked(&mode_config->mutex) && !drm_modeset_is_locked(&mode_config->connection_mutex) failed at /usr/home/jon/freebsd/ports/graphics/drm-next-kmod/work/kms-drm-63426fd/include/drm/drm_crtc.h:1403

I'll attached /var/log/messages, but unfortunately I wasn't able to get a dump due to a swap partition size issue.

[trombonehero]

drm-err.txt

The promised /var/log/messages content...

[iotamudelta]

Are there any other problems?

@markjdb @johalun

[hselasky]

Hi, The WARNING() messages are due to mode-switching in DRM and this is normal and might cause a double fault. The panic seems unrelated to DRM code.

[hselasky]

Try updating the kernel sources and rebuild drm-next-kmod.

[zeising]

Is this still relevant?

[trombonehero]

This issue seems to have been resolved, thanks.