diff options
| author | Konstantin Taranov <kotaranov@microsoft.com> | 2025-10-23 03:03:00 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-01-08 10:16:49 +0100 |
| commit | 94dda131004e7218b465ac95c52dd6eeee5cd6be (patch) | |
| tree | 8b3e920088c59650ccd83b7210107a1716808237 /drivers/infiniband | |
| parent | 20710399c9b5ef80e21d13fa0138b1370e358c8f (diff) | |
RDMA/mana_ib: check cqe length for kernel CQs
[ Upstream commit 887bfe5986396aca908b7afd2d214471ba7d5544 ]
Check queue size during kernel CQ creation to prevent overflow of u32.
Fixes: bec127e45d9f ("RDMA/mana_ib: create kernel-level CQs")
Link: https://patch.msgid.link/r/1761213780-5457-1-git-send-email-kotaranov@linux.microsoft.com
Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com>
Reviewed-by: Long Li <longli@microsoft.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | drivers/infiniband/hw/mana/cq.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/mana/cq.c b/drivers/infiniband/hw/mana/cq.c index 1becc8779123..7600412b0739 100644 --- a/drivers/infiniband/hw/mana/cq.c +++ b/drivers/infiniband/hw/mana/cq.c @@ -56,6 +56,10 @@ int mana_ib_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr, doorbell = mana_ucontext->doorbell; } else { is_rnic_cq = true; + if (attr->cqe > U32_MAX / COMP_ENTRY_SIZE / 2 + 1) { + ibdev_dbg(ibdev, "CQE %d exceeding limit\n", attr->cqe); + return -EINVAL; + } buf_size = MANA_PAGE_ALIGN(roundup_pow_of_two(attr->cqe * COMP_ENTRY_SIZE)); cq->cqe = buf_size / COMP_ENTRY_SIZE; err = mana_ib_create_kernel_queue(mdev, buf_size, GDMA_CQ, &cq->queue); |