[C++][GPU] IPC writer attempts to read non-CPU memory when it needs to shift offsets
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Component: C++
Component: GPU
Type: bug
- Dominant language
- C++
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Description
### Describe the bug, including details regarding any error messages, version, and platform.
As found out in PR #46706, when the IPC writer encounters an offsets buffer starting with a non-zero offset, it produces a shifted version of the offsets by reading directly from the original buffer. This does not work if the buffer is a non-CPU buffer.
### Component(s)
C++, GPU
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