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[144.49.247.125]) by smtp-relay.gmail.com with ESMTPS id 98e67ed59e1d1-3a06df4bb0bsm118451a91.0.2026.09.21.17.51.53 for (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Mon, 21 Sep 2026 17:51:53 -0700 (PDT) X-Relaying-Domain: broadcom.com X-CFilter-Loop: Reflected Received: by mail-pg1-f200.google.com with SMTP id 41be03b00d2f7-cc7361c62b9so2844843a12.3 for ; Mon, 21 Sep 2026 17:51:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; t=1790038312; x=1790643112; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to:content-type; bh=PxPajWRf6dCXc7YWlT40jlO5EA/ML/FsRYuXammo3b8=; b=ap3vwm3atdCeJCXPXwKUTij1MCZkqzLvXkNejaPv4/Tw4pKbLzWsenv8LmG4E3vfs/ HivKf2PIoJyma4806ETk15KYcU80xdedXnB9/xe5XXRqCQxXR51Cd9jAcKLXSfuqhKjX zPS7WrlbDm9La0gA13YzxGyVao84qdsyEMF1A= X-Received: by 2002:a17:90b:4acf:b0:39d:ec43:3cc3 with SMTP id 98e67ed59e1d1-3a06adebd67mr738200a91.10.1790038312392; Mon, 21 Sep 2026 17:51:52 -0700 (PDT) X-Received: by 2002:a17:90b:4acf:b0:39d:ec43:3cc3 with SMTP id 98e67ed59e1d1-3a06adebd67mr738193a91.10.1790038311840; Mon, 21 Sep 2026 17:51:51 -0700 (PDT) Received: from dhcp-10-123-156-114.dhcp.broadcom.net ([192.19.234.250]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-33e61340e56sm804218eec.30.2026.09.21.17.51.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 21 Sep 2026 17:51:50 -0700 (PDT) From: Selvin Xavier To: leon@kernel.org, jgg@ziepe.ca Cc: linux-rdma@vger.kernel.org, andrew.gospodarek@broadcom.com, kalesh-anakkur.purayil@broadcom.com, Selvin Xavier Subject: [PATCH for-rc v3 5/8] RDMA/bnxt_re: Validate num_sge in bnxt_re_post_srq_recv() Date: Mon, 21 Sep 2026 23:12:27 -0700 Message-Id: <20260922061230.7909-6-selvin.xavier@broadcom.com> X-Mailer: git-send-email 2.39.3 In-Reply-To: <20260922061230.7909-1-selvin.xavier@broadcom.com> References: <20260922061230.7909-1-selvin.xavier@broadcom.com> Precedence: bulk X-Mailing-List: linux-rdma@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-DetectorID-Processed: b00c1d49-9d2e-4205-b15f-d015386d3d5e Add a check if max sge for SRQ is exceeding the device maximum. Fixes: 37cb11acf1f7 ("RDMA/bnxt_re: Add SRQ support for Broadcom adapters") Reviewed-by: Kalesh AP Signed-off-by: Selvin Xavier --- drivers/infiniband/hw/bnxt_re/ib_verbs.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/infiniband/hw/bnxt_re/ib_verbs.c b/drivers/infiniband/hw/bnxt_re/ib_verbs.c index 22583d2d361d..e744a3cae3a2 100644 --- a/drivers/infiniband/hw/bnxt_re/ib_verbs.c +++ b/drivers/infiniband/hw/bnxt_re/ib_verbs.c @@ -2399,6 +2399,13 @@ int bnxt_re_post_srq_recv(struct ib_srq *ib_srq, const struct ib_recv_wr *wr, /* Transcribe each ib_recv_wr to qplib_swqe */ wqe.flags = 0; wqe.num_sge = wr->num_sge; + if (wr->num_sge > srq->qplib_srq.max_sge) { + ibdev_err(&srq->rdev->ibdev, + "Limit exceeded for SRQ Receive SGEs"); + rc = -EINVAL; + *bad_wr = wr; + break; + } bnxt_re_build_sgl(wr->sg_list, wqe.sg_list, wr->num_sge); wqe.wr_id = wr->wr_id; wqe.type = BNXT_QPLIB_SWQE_TYPE_RECV; -- 2.39.3