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9ec4483a3f
Fix unreg_umr to move the MR to a kernel owned PD (i.e. the UMR PD) which
can't be accessed by userspace.
This ensures that nothing can continue to access the MR once it has been
placed in the kernels cache for reuse.
MRs in the cache continue to have their HW state, including DMA tables,
present. Even though the MR has been invalidated, changing the PD provides
an additional layer of protection against use of the MR.
Link: https://lore.kernel.org/r/20190723065733.4899-5-leon@kernel.org
Cc: <stable@vger.kernel.org> # 3.10
Fixes:
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|---|---|---|
| .. | ||
| bnxt_re | ||
| cxgb3 | ||
| cxgb4 | ||
| efa | ||
| hfi1 | ||
| hns | ||
| i40iw | ||
| mlx4 | ||
| mlx5 | ||
| mthca | ||
| ocrdma | ||
| qedr | ||
| qib | ||
| usnic | ||
| vmw_pvrdma | ||
| Makefile | ||