RDMA/core: Add rdma_restrack_begin/abort/commit_del() operations

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Add rdma_restrack_abort_del(), rdma_restrack_begin_del() and
rdma_restrack_commit_del() functions to allow deleting a resource from
the xarray to effectively prevent future access to it and wait for all
current users to finish while preserving its index in the xarray to
allow to re-insert it if needed with guaranteed success.

This is a preparatory change for subsequent patches in the series
which will use these functions to fix the cleanup flow.

Signed-off-by: Patrisious Haddad <phaddad@nvidia.com>
Reviewed-by: Michael Guralnik <michaelgur@nvidia.com>
Signed-off-by: Edward Srouji <edwards@nvidia.com>
Link: https://patch.msgid.link/20260713-restrack-uaf-fix-resub-v2-1-bbe8bb270d51@nvidia.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>

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Patrisious Haddad 2026-07-13 18:38:00 +03:00 • committed by Leon Romanovsky

parent 97f7c2262c

commit 8d18621067

2 changed files with 135 additions and 33 deletions

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165

drivers/infiniband/core/restrack.c

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3

drivers/infiniband/core/restrack.h

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