Messages in this thread Patch in this message | | | From | Sasha Levin <> | Subject | [PATCH AUTOSEL 6.7 52/58] drm/amdgpu: Fix shared buff copy to user | Date | Mon, 12 Feb 2024 19:17:58 -0500 |
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From: "Stanley.Yang" <Stanley.Yang@amd.com>
[ Upstream commit 2dcf82a8e8dc930655787797ef8a3692b527c7a9 ]
ta if invoke node buffer |-------- ta type ----------| |-------- ta id ----------| |-------- cmd id ----------| |------ shared buf len -----| |------ shared buffer ------|
ta if invoke node buffer is as above, copy shared buffer data to correct location
Signed-off-by: Stanley.Yang <Stanley.Yang@amd.com> Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/gpu/drm/amd/amdgpu/amdgpu_psp_ta.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp_ta.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp_ta.c index 468a67b302d4..ca5c86e5f7cd 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp_ta.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp_ta.c @@ -362,7 +362,7 @@ static ssize_t ta_if_invoke_debugfs_write(struct file *fp, const char *buf, size } } - if (copy_to_user((char *)buf, context->mem_context.shared_buf, shared_buf_len)) + if (copy_to_user((char *)&buf[copy_pos], context->mem_context.shared_buf, shared_buf_len)) ret = -EFAULT; err_free_shared_buf: -- 2.43.0
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