IB/mlx5: Properly support implicit ODP rereg_mr

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Due to all the child mkeys in the implicit ODP configuration we cannot
change anything in place for the parent mkey. Instead the whole thing
needs to be rebuilt if any change is requested. If the user does not
specify a translation then force the implicit values which will then fall
through the logic into mlx5_ib_reg_user_mr() to allocate a completely new
MR.

Since implicit children were also touching the mr->pd, this removes
another case where the access was racy.

Fixes: ef3642c4f5 ("RDMA/mlx5: Fix error unwinds for rereg_mr")
Link: https://sashiko.dev/#/patchset/20260427-security-bug-fixes-v3-0-4621fa52de0e%40nvidia.com?part=4
Link: https://patch.msgid.link/r/3-v1-29ebd2c229b5+fd5-ib_mr_pd_jgg@nvidia.com
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

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Jason Gunthorpe 2026-06-03 22:27:42 -03:00

parent 93e64c7a33

commit ee7a833506

1 changed files with 15 additions and 0 deletions

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drivers/infiniband/hw/mlx5/mr.c

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