e3f3b68c6e
Since the data structures such as rings are shared in their entirety, those TAILQ pointers are shared as well. Meaning that, after a successful rte_ring creation, the tailq_next pointer of the last ring in the TAILQ will be updated with a pointer to a ring which may not be present in the address space of another process (i.e. a ring that may be host-local or guest-local, and not shared over IVSHMEM). Any successive ring create/lookup on the other side of IVSHMEM will result in trying to dereference an invalid pointer. This patchset fixes this problem by creating a default tailq entry that may be used by any data structure that chooses to use TAILQs. This default TAILQ entry will consist of a tailq_next/tailq_prev pointers, and an opaque pointer to arbitrary data. All TAILQ pointers from data structures themselves will be removed and replaced by those generic TAILQ entries, thus fixing the problem of potentially exposing local address space to shared structures. Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com> Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com> |
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| .. | ||
| Makefile | ||
| rte_ring.c | ||
| rte_ring.h | ||