* [PATCH] drm/amd/display: Use GFP_ATOMIC in dc_create_stream_for_sink
@ 2026-02-23 11:45 Natalie Vock
2026-02-24 14:56 ` Alex Deucher
0 siblings, 1 reply; 2+ messages in thread
From: Natalie Vock @ 2026-02-23 11:45 UTC (permalink / raw)
To: Harry Wentland, Leo Li, Rodrigo Siqueira; +Cc: amd-gfx, stable
This can be called while preemption is disabled, for example by
dcn32_internal_validate_bw which is called with the FPU active.
Fixes "BUG: scheduling while atomic" messages I encounter on my Navi31
machine.
Cc: stable@vger.kernel.org
Signed-off-by: Natalie Vock <natalie.vock@gmx.de>
---
drivers/gpu/drm/amd/display/dc/core/dc_stream.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_stream.c b/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
index 191f6435e7c64..87c0cf7e290ea 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
@@ -170,11 +170,11 @@ struct dc_stream_state *dc_create_stream_for_sink(
if (sink == NULL)
goto fail;
- stream = kzalloc(sizeof(struct dc_stream_state), GFP_KERNEL);
+ stream = kzalloc(sizeof(struct dc_stream_state), GFP_ATOMIC);
if (stream == NULL)
goto fail;
- stream->update_scratch = kzalloc((int32_t) dc_update_scratch_space_size(), GFP_KERNEL);
+ stream->update_scratch = kzalloc((int32_t) dc_update_scratch_space_size(), GFP_ATOMIC);
if (stream->update_scratch == NULL)
goto fail;
--
2.53.0
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] drm/amd/display: Use GFP_ATOMIC in dc_create_stream_for_sink
2026-02-23 11:45 [PATCH] drm/amd/display: Use GFP_ATOMIC in dc_create_stream_for_sink Natalie Vock
@ 2026-02-24 14:56 ` Alex Deucher
0 siblings, 0 replies; 2+ messages in thread
From: Alex Deucher @ 2026-02-24 14:56 UTC (permalink / raw)
To: Natalie Vock; +Cc: Harry Wentland, Leo Li, Rodrigo Siqueira, amd-gfx, stable
Applied. Thanks!
On Mon, Feb 23, 2026 at 9:34 AM Natalie Vock <natalie.vock@gmx.de> wrote:
>
> This can be called while preemption is disabled, for example by
> dcn32_internal_validate_bw which is called with the FPU active.
>
> Fixes "BUG: scheduling while atomic" messages I encounter on my Navi31
> machine.
>
> Cc: stable@vger.kernel.org
>
> Signed-off-by: Natalie Vock <natalie.vock@gmx.de>
> ---
> drivers/gpu/drm/amd/display/dc/core/dc_stream.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_stream.c b/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
> index 191f6435e7c64..87c0cf7e290ea 100644
> --- a/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
> +++ b/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
> @@ -170,11 +170,11 @@ struct dc_stream_state *dc_create_stream_for_sink(
> if (sink == NULL)
> goto fail;
>
> - stream = kzalloc(sizeof(struct dc_stream_state), GFP_KERNEL);
> + stream = kzalloc(sizeof(struct dc_stream_state), GFP_ATOMIC);
> if (stream == NULL)
> goto fail;
>
> - stream->update_scratch = kzalloc((int32_t) dc_update_scratch_space_size(), GFP_KERNEL);
> + stream->update_scratch = kzalloc((int32_t) dc_update_scratch_space_size(), GFP_ATOMIC);
> if (stream->update_scratch == NULL)
> goto fail;
>
> --
> 2.53.0
>
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