On 6/4/24 13:45, Aurabindo Pillai wrote:
This reverts commit 44069f0f9b1fe577c5d4f05fa9eb02db8c618adc since
the code path is called from FPU context, and triggers error like:
[ 26.924055] BUG: sleeping function called from invalid context at
include/linux/sched/mm.h:306
[ 26.924060] in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 1022,
name: modprobe
[ 26.924063] preempt_count: 2, expected: 0
[ 26.924064] RCU nest depth: 0, expected: 0
[ 26.924066] Preemption disabled at:
[ 26.924067] [<ffffffffc089e5e0>] dc_fpu_begin+0x30/0xd0 [amdgpu]
[ 26.924322] CPU: 9 PID: 1022 Comm: modprobe Not tainted 6.8.0+ #20
[ 26.924325] Hardware name: System manufacturer System Product Name/CROSSHAIR
VI HERO, BIOS 6302 10/23/2018
[ 26.924326] Call Trace:
[ 26.924327] <TASK>
[ 26.924329] dump_stack_lvl+0x37/0x50
[ 26.924333] ? dc_fpu_begin+0x30/0xd0 [amdgpu]
[ 26.924589] dump_stack+0x10/0x20
[ 26.924592] __might_resched+0x16a/0x1c0
[ 26.924596] __might_sleep+0x42/0x70
[ 26.924598] __kmalloc_node_track_caller+0x2ad/0x4b0
[ 26.924601] ? dm_helpers_allocate_gpu_mem+0x12/0x20 [amdgpu]
[ 26.924855] ? dcn401_update_bw_bounding_box+0x2a/0xf0 [amdgpu]
[ 26.925122] kmemdup+0x20/0x50
[ 26.925124] ? kernel_fpu_begin_mask+0x6b/0xe0
[ 26.925127] ? kmemdup+0x20/0x50
[ 26.925129] dcn401_update_bw_bounding_box+0x2a/0xf0 [amdgpu]
[ 26.925393] dc_create+0x311/0x670 [amdgpu]
[ 26.925649] amdgpu_dm_init+0x2aa/0x1fa0 [amdgpu]
[ 26.925903] ? irq_work_queue+0x38/0x50
[ 26.925907] ? vprintk_emit+0x1e7/0x270
[ 26.925910] ? dev_printk_emit+0x83/0xb0
[ 26.925914] ? amdgpu_device_rreg+0x17/0x20 [amdgpu]
[ 26.926133] dm_hw_init+0x14/0x30 [amdgpu]
---
drivers/gpu/drm/amd/display/dc/core/dc_state.c | 16 +++++-----------
.../display/dc/resource/dcn401/dcn401_resource.c | 16 +++++-----------
2 files changed, 10 insertions(+), 22 deletions(-)
You probably want something like
https://patchwork.freedesktop.org/patch/597044/ instead.
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_state.c
b/drivers/gpu/drm/amd/display/dc/core/dc_state.c
index 8ea9391c60b7..70928223b642 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_state.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_state.c
@@ -193,11 +193,7 @@ static void init_state(struct dc *dc, struct dc_state
*state)
struct dc_state *dc_state_create(struct dc *dc, struct dc_state_create_params
*params)
{
#ifdef CONFIG_DRM_AMD_DC_FP
- struct dml2_configuration_options *dml2_opt;
-
- dml2_opt = kmemdup(&dc->dml2_options, sizeof(*dml2_opt), GFP_KERNEL);
- if (!dml2_opt)
- return NULL;
+ struct dml2_configuration_options dml2_opt = dc->dml2_options;
#endif
struct dc_state *state = kvzalloc(sizeof(struct dc_state),
GFP_KERNEL);
@@ -211,14 +207,12 @@ struct dc_state *dc_state_create(struct dc *dc, struct
dc_state_create_params *p
#ifdef CONFIG_DRM_AMD_DC_FP
if (dc->debug.using_dml2) {
- dml2_opt->use_clock_dc_limits = false;
- dml2_create(dc, dml2_opt, &state->bw_ctx.dml2);
+ dml2_opt.use_clock_dc_limits = false;
+ dml2_create(dc, &dml2_opt, &state->bw_ctx.dml2);
- dml2_opt->use_clock_dc_limits = true;
- dml2_create(dc, dml2_opt, &state->bw_ctx.dml2_dc_power_source);
+ dml2_opt.use_clock_dc_limits = true;
+ dml2_create(dc, &dml2_opt, &state->bw_ctx.dml2_dc_power_source);
}
-
- kfree(dml2_opt);
#endif
kref_init(&state->refcount);
diff --git a/drivers/gpu/drm/amd/display/dc/resource/dcn401/dcn401_resource.c
b/drivers/gpu/drm/amd/display/dc/resource/dcn401/dcn401_resource.c
index 8dfb0a3d21cb..247bac177d1b 100644
--- a/drivers/gpu/drm/amd/display/dc/resource/dcn401/dcn401_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/resource/dcn401/dcn401_resource.c
@@ -1581,27 +1581,21 @@ static struct dc_cap_funcs cap_funcs = {
static void dcn401_update_bw_bounding_box(struct dc *dc, struct clk_bw_params *bw_params)
{
- struct dml2_configuration_options *dml2_opt;
-
- dml2_opt = kmemdup(&dc->dml2_options, sizeof(*dml2_opt), GFP_KERNEL);
- if (!dml2_opt)
- return;
+ struct dml2_configuration_options dml2_opt = dc->dml2_options;
DC_FP_START();
dcn401_update_bw_bounding_box_fpu(dc, bw_params);
- dml2_opt->use_clock_dc_limits = false;
+ dml2_opt.use_clock_dc_limits = false;
if (dc->debug.using_dml2 && dc->current_state &&
dc->current_state->bw_ctx.dml2)
- dml2_reinit(dc, dml2_opt, &dc->current_state->bw_ctx.dml2);
+ dml2_reinit(dc, &dml2_opt, &dc->current_state->bw_ctx.dml2);
- dml2_opt->use_clock_dc_limits = true;
+ dml2_opt.use_clock_dc_limits = true;
if (dc->debug.using_dml2 && dc->current_state &&
dc->current_state->bw_ctx.dml2_dc_power_source)
- dml2_reinit(dc, dml2_opt,
&dc->current_state->bw_ctx.dml2_dc_power_source);
+ dml2_reinit(dc, &dml2_opt,
&dc->current_state->bw_ctx.dml2_dc_power_source);
DC_FP_END();
-
- kfree(dml2_opt);
}
enum dc_status dcn401_patch_unknown_plane_state(struct dc_plane_state *plane_state)
--
Hamza
