Re: [drm:qxl] BUG: sleeping function called from invalid context - qxl_bo_kmap_atomic_page()...splat
From: Gabriel Krisman Bertazi
Date: Mon May 15 2017 - 00:20:15 EST
Mike Galbraith <efault@xxxxxx> writes:
> On Tue, 2017-05-09 at 04:37 +0200, Mike Galbraith wrote:
>> On Mon, 2017-05-08 at 16:48 -0300, Gabriel Krisman Bertazi wrote:
>>
>> > Thanks for reporting this. Can you confirm the following patch prevents
>> > the issue?
>>
>> Nope, it still gripes.
>
> The reason for this gripe is that we find that we don't have memory
> reserved.. a tad too late.
>
Thanks for the info.
Sorry I wasn't able to get back to this last week. I'll try to get
another patch for -rc2.
> Xorg-2252 [000] .... 135.409756: qxl_release_map <-qxl_cursor_atomic_update
> Xorg-2252 [000] .... 135.409756: qxl_bo_kmap_atomic_page <-qxl_release_map
> Xorg-2252 [000] .... 135.409757: qxl_bo_kmap_atomic_page: ENTER
> Xorg-2252 [000] .... 135.409757: ttm_mem_io_lock <-qxl_bo_kmap_atomic_page
> Xorg-2252 [000] .... 135.409757: ttm_mem_io_reserve <-qxl_bo_kmap_atomic_page
> Xorg-2252 [000] .... 135.409757: qxl_ttm_io_mem_reserve <-ttm_mem_io_reserve
> Xorg-2252 [000] .... 135.409757: ttm_mem_io_unlock <-qxl_bo_kmap_atomic_page
> Xorg-2252 [000] .... 135.409757: qxl_bo_kmap_atomic_page: PREEMPTION DISABLED
> Xorg-2252 [000] ...1 135.409758: qxl_bo_kmap <-qxl_cursor_atomic_update
> Xorg-2252 [000] ...1 135.409758: ttm_bo_kmap <-qxl_bo_kmap <== too late
> Xorg-2252 [000] ...1 135.409758: ttm_mem_io_reserve <-ttm_bo_kmap
> Xorg-2252 [000] ...1 135.409758: qxl_ttm_io_mem_reserve <-ttm_mem_io_reserve
> Xorg-2252 [000] ...1 135.409759: ioremap_nocache <-ttm_bo_kmap <== game over
> Xorg-2252 [000] ...1 135.409759: __ioremap_caller <-ioremap_nocache
> Xorg-2252 [000] ...1 135.409759: walk_system_ram_range <-__ioremap_caller
> Xorg-2252 [000] ...1 135.409759: find_next_iomem_res <-walk_system_ram_range
> Xorg-2252 [000] ...1 135.409759: _raw_read_lock <-find_next_iomem_res
> Xorg-2252 [000] ...1 135.409760: reserve_memtype <-__ioremap_caller
> Xorg-2252 [000] ...1 135.409760: pat_pagerange_is_ram <-reserve_memtype
> Xorg-2252 [000] ...1 135.409761: walk_system_ram_range <-pat_pagerange_is_ram
> Xorg-2252 [000] ...1 135.409761: find_next_iomem_res <-walk_system_ram_range
> Xorg-2252 [000] ...1 135.409761: _raw_read_lock <-find_next_iomem_res
> Xorg-2252 [000] ...1 135.409761: kmem_cache_alloc_trace <-reserve_memtype
> Xorg-2252 [000] ...1 135.409761: __might_sleep <-kmem_cache_alloc_trace
> Xorg-2252 [000] ...1 135.409762: ___might_sleep <-__might_sleep
--
Gabriel Krisman Bertazi