RDMA/bnxt_re: synchronize the qp-handle table array

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[ Upstream commit 76d3ddff71 ]

There is a race between the CREQ tasklet and destroy qp when accessing the
qp-handle table. There is a chance of reading a valid qp-handle in the
CREQ tasklet handler while the QP is already moving ahead with the
destruction.

Fixing this race by implementing a table-lock to synchronize the access.

Fixes: f218d67ef0 ("RDMA/bnxt_re: Allow posting when QPs are in error")
Fixes: 84cf229f40 ("RDMA/bnxt_re: Fix the qp table indexing")
Link: https://patch.msgid.link/r/1728912975-19346-3-git-send-email-selvin.xavier@broadcom.com
Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Selvin Xavier 2024-10-14 06:36:15 -07:00 • committed by Greg Kroah-Hartman

parent adf37466c3

commit 730dc0818f

3 changed files with 15 additions and 4 deletions

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4

drivers/infiniband/hw/bnxt_re/qplib_fp.c

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13

drivers/infiniband/hw/bnxt_re/qplib_rcfw.c

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2

drivers/infiniband/hw/bnxt_re/qplib_rcfw.h

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