I'm using the latest snapshot amd64. When trying to suspend the system (zzz),
the kernel panics. Before the drm update, there was no kernel panic in the
process of suspending the system.
ddb{0}> show panic
*cpu0: extend_free: region not found
ddb{0}> bt
db_enter() at db_enter+0x10
panic(ffffffff81e6d7be) at panic+0xbf
extent_free(ffffffff8224a1d0,11e5a0f40,100000,10) at extent_free+0x2fe
bus_space_unmap(ffffffff82009b70,ffff800000e50f40,100000) at
bus_space_unmap+0x10f
ttm_bo_move_memcpy(ffff800000e50e18,ffff800022d35690,ffff800022d35558) at
ttm_bo_move_memcpy+0x333
amdgpu_bo_move(ffff800000e50e18,1,ffff800022d35690,ffff800022d35558) at
amdgpu_bo_move+0x3b5
ttm_bo_handle_move_mem(ffff800000e50e18,ffff800022d35558,1,ffff800022d35690) at
ttm_bo_handle_move_mem+0x16f
ttm_mem_evict_first(ffff8000001878e0,ffff800000187b68,0,ffff800022d35690,0) at
ttm_mem_evict_first+0x31d
ttm_resource_manager_force_list_clean(ffff8000001878e0,ffff800000187b68) at
ttm_resource_manager_force_list_clean+0xdf
amdgpu_device_suspend(ffff800000182058,1) at amdgpu_device_suspend+0xfb
amdgpu_activate(ffff800000182000,2) at amdgpu_activate+0x4d
config_activate_children(ffff800000181000,2) at config_activate_children+0x85
config_activate_children(ffff800000180000,2) at config_activate_children+0x85
ppbactivate(ffff800000180000,2) at ppbactivate+0x42e
config_activate_children(ffff80000017ef00,2) at config_activate_children+0x85
config_activate_children(ffff800000174c00,2) at config_activate_children+0x85
ppbactivate(ffff800000174c00,2) at ppbactivate+0x42e
config_activate_children(ffff80000017ee00,2) at config_activate_children+0x85
config_activate_children(ffff800000174800,2) at config_activate_children+0x85
ppbactivate(ffff800000174800,2) at ppbactivate+0x42e
config_activate_children(ffff80000017eb00,2) at config_activate_children+0x85
config_activate_children(ffff80000002b180,2) at config_activate_children+0x85
config_suspend_all(2) at config_suspend_all+0x1ae
acpi_sleep_state(ffff800000028400,1) at acpi_sleep_state+0x16f
acpi_sleep_task(ffff800000028400,1) at acpi_sleep_task+0x1d
acpi_thread(ffff800000141f50) at acpi_thread+0x1b8
end trace frame: 0x0, count: -26
ddb{0}>
