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drm/amdgpu: fix out of bounds access in gfx11 during ip dump

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During ip dump in gfx11 the index variable is reused but is
not reinitialized to 0 and this causes the index calculation
to be wrong and access out of bound access.

Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Sunil Khatri <sunil.khatri@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Sunil Khatri
2024-07-02 13:49:20 +05:30
committed by Alex Deucher
parent 94845ea057
commit ea67deb03c
1 changed files with 2 additions and 0 deletions
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2
drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
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@@ -6411,6 +6411,7 @@ static void gfx_v11_ip_print(void *handle, struct drm_printer *p)
if (!adev->gfx.ip_dump_gfx_queues)
return;
index = 0;
reg_count = ARRAY_SIZE(gc_gfx_queue_reg_list_11);
drm_printf(p, "\nnum_me: %d num_pipe: %d num_queue: %d\n",
adev->gfx.me.num_me,
@@ -6475,6 +6476,7 @@ static void gfx_v11_ip_dump(void *handle)
if (!adev->gfx.ip_dump_gfx_queues)
return;
index = 0;
reg_count = ARRAY_SIZE(gc_gfx_queue_reg_list_11);
amdgpu_gfx_off_ctrl(adev, false);
mutex_lock(&adev->srbm_mutex);