crash> bt/a ffffa0324977b1a0
trace: pid 351 lid 1 at 0xffffa382568d3a40
sleepq_block() at sleepq_block+0xb8
cv_wait() at cv_wait+0xfb
ww_mutex_state_wait() at ww_mutex_state_wait+0x2b
linux_ww_mutex_lock() at linux_ww_mutex_lock+0x93
drm_modeset_lock() at drm_modeset_lock+0x53
drm_atomic_add_affected_connectors() at drm_atomic_add_affected_connectors+0x24
drm_atomic_helper_check_modeset() at drm_atomic_helper_check_modeset+0x22b
intel_atomic_check() at intel_atomic_check+0x1d
drm_atomic_check_only() at drm_atomic_check_only+0x1df
drm_atomic_commit() at drm_atomic_commit+0x12
drm_atomic_helper_set_config() at drm_atomic_helper_set_config+0x81
drm_mode_set_config_internal() at drm_mode_set_config_internal+0x82
drm_mode_setcrtc() at drm_mode_setcrtc+0xf1
drm_ioctl() at drm_ioctl+0x20d