diff options
| author | Konstantin Taranov <kotaranov@microsoft.com> | 2025-10-23 13:03:00 +0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2025-12-17 20:45:33 +0300 |
| commit | 887bfe5986396aca908b7afd2d214471ba7d5544 (patch) | |
| tree | 4824c7096916600704a6dc9e5ee71d773962a857 | |
| parent | d95e99a74eaf35c070f5939295331e5d7857c723 (diff) | |
| download | linux-887bfe5986396aca908b7afd2d214471ba7d5544.tar.xz | |
RDMA/mana_ib: check cqe length for kernel CQs
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>
| -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); |