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[144.49.247.23]) by smtp-relay.gmail.com with ESMTPS id 98e67ed59e1d1-3ae5a8a575esm795101a91.2.2026.10.27.23.13.36 for (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Tue, 27 Oct 2026 23:13:37 -0700 (PDT) X-Relaying-Domain: broadcom.com X-CFilter-Loop: Reflected Received: by mail-pf1-f200.google.com with SMTP id d2e1a72fcca58-8a05a4396d2so479015b3a.0 for ; Tue, 27 Oct 2026 23:13:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; t=1793168016; x=1793772816; 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=GDBZQW+3Lvfr6n68bI8edC/bpW9MdLMkgTarrjT1RYU=; b=XRnfdk13th1TzIgsYp3iahXCj16CgZa5Pv2m+rMMDqGzRSgTzGhhrbEDpLSgBpQTKh sVYDIHqcWN86h5HOjhBc5pap79r83jrmGAhs+Id6cga2z2+B8WsmhHR2CivoCVu/TKpu izBzYpFPk1wEL1duSI1Q51TYqA7lUp6Y6pCsg= X-Received: by 2002:a05:6a20:431a:b0:3e2:9470:52f3 with SMTP id adf61e73a8af0-3e902335a53mr1193766637.32.1793168015726; Tue, 27 Oct 2026 23:13:35 -0700 (PDT) X-Received: by 2002:a05:6a20:431a:b0:3e2:9470:52f3 with SMTP id adf61e73a8af0-3e902335a53mr1193747637.32.1793168015289; Tue, 27 Oct 2026 23:13:35 -0700 (PDT) Received: from dhcp-10-123-156-114.dhcp.broadcom.net ([192.19.234.250]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-8a75cf8fab6sm171717b3a.13.2026.10.27.23.13.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 27 Oct 2026 23:13:34 -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 5/7] RDMA/bnxt_re: Reset cqe pointer each poll_cq iteration Date: Wed, 28 Oct 2026 04:34:02 -0700 Message-Id: <20261028113404.33289-6-selvin.xavier@broadcom.com> X-Mailer: git-send-email 2.39.3 In-Reply-To: <20261028113404.33289-1-selvin.xavier@broadcom.com> References: <20261028113404.33289-1-selvin.xavier@broadcom.com> X-Mailing-List: linux-rdma@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-DetectorID-Processed: b00c1d49-9d2e-4205-b15f-d015386d3d5e In bnxt_re_poll_cq(), cqe advances for every polled CQE, but budget is decremented only for completions reported to the caller. Skipped CQEs (looped-back QP1 receive, shadow-QP completions, unknown opcode) leave cqe ahead of where budget implies, so the next poll can write past the end of cq->cql[]. cql[] is only scratch space, so reset cqe to the start of the array on each iteration of the outer loop. Fixes: 1ac5a4047975 ("RDMA/bnxt_re: Add bnxt_re RoCE driver") Signed-off-by: Selvin Xavier --- drivers/infiniband/hw/bnxt_re/ib_verbs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/infiniband/hw/bnxt_re/ib_verbs.c b/drivers/infiniband/hw/bnxt_re/ib_verbs.c index ac15372376a2..796ea795c5b7 100644 --- a/drivers/infiniband/hw/bnxt_re/ib_verbs.c +++ b/drivers/infiniband/hw/bnxt_re/ib_verbs.c @@ -4328,8 +4328,8 @@ int bnxt_re_poll_cq(struct ib_cq *ib_cq, int num_entries, struct ib_wc *wc) ibdev_err(&cq->rdev->ibdev, "POLL CQ : no CQL to use"); goto exit; } - cqe = &cq->cql[0]; while (budget) { + cqe = &cq->cql[0]; lib_qp = NULL; ncqe = bnxt_qplib_poll_cq(&cq->qplib_cq, cqe, budget, &lib_qp); if (lib_qp) { -- 2.39.3