From nobody Mon Jun 22 22:44:36 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D9FE3C433EF for ; Tue, 15 Mar 2022 12:42:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1348399AbiCOMnL (ORCPT ); Tue, 15 Mar 2022 08:43:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:32784 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235627AbiCOMnJ (ORCPT ); Tue, 15 Mar 2022 08:43:09 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 1571D31207 for ; Tue, 15 Mar 2022 05:41:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1647348117; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=L8qSvNcazquKGgqZpfRwZOK5T4G+V/7nPQSKEnK7vHo=; b=GYjAdNkpiPI7aD7p2UZk1mWt/J+J2WY1j3htNOI0iof4RzuDpILSWF92Sv7c888IyoeR4/ WcTqpPtxNSVY251gzpllzBZNZW5hE/UL6vbMnlArWkdBAEuAfEm/gqd9tsGMblOV/gxT7B LnERTm5ESjoJ0K8EtdkjzSTG3VyX9BU= Received: from mail-oo1-f72.google.com (mail-oo1-f72.google.com [209.85.161.72]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-614-qG6vepp7O9emXuKbiup0tw-1; Tue, 15 Mar 2022 08:41:55 -0400 X-MC-Unique: qG6vepp7O9emXuKbiup0tw-1 Received: by mail-oo1-f72.google.com with SMTP id r63-20020a4a3742000000b00320d9025595so15417385oor.5 for ; Tue, 15 Mar 2022 05:41:55 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=L8qSvNcazquKGgqZpfRwZOK5T4G+V/7nPQSKEnK7vHo=; b=NcZDCzuZ04wUhZB72nWzoP6VfKhpvcCifoVt8Up8nbsWwd+OO9JTMv7t6eIrytMsiv 6ItJ79heWUep4JOVJsjb4boQHUsJaIMUkZeEtFU5TDCgjLilRKiPZK9A3T+iwQaOx8Nl 3iRo7LHYvlGSFK/xIH6hd7iUbh+ATH6bvDIY753HAtgRrvAMcx/NmxqmoA2PvO4LfQ9+ cSJrvrjYXqIP/fCWt2zJNOhrSERVxJHdCDrKUYp16wSDKlIGJ5ffLTVzUIbnTgBzCrbQ lPJWafstPKovSsPMX6jvFPq2LlDiUe7G/q8CKrCctNKKRbJJ/dpeS7hXIV+g/UtCnJOr TD3A== X-Gm-Message-State: AOAM531AGhc3qXGA7aSkIDVDlcwKdNJZHjNq6P+VJhYlM/viEJIIN9/l exeSZHT+LU1kZ6pLJQlriV3Gml1f+R4imluTa0D4nsKrSWNaWAM7H+T2U1/IafzZlkBhY4bwiqh 5ECPreNK/izgNv9jNmNNbUgB9 X-Received: by 2002:a05:6830:2a13:b0:5b2:4818:9e47 with SMTP id y19-20020a0568302a1300b005b248189e47mr12799092otu.246.1647348115058; Tue, 15 Mar 2022 05:41:55 -0700 (PDT) X-Google-Smtp-Source: ABdhPJxcpL+Gz6iIXjMEkxLwJ/eu0PZYTQsZg4Pa8CgHWGB+zJNMcXTr1+Z1m4WKMcLCOWc4CCmSkw== X-Received: by 2002:a05:6830:2a13:b0:5b2:4818:9e47 with SMTP id y19-20020a0568302a1300b005b248189e47mr12799084otu.246.1647348114840; Tue, 15 Mar 2022 05:41:54 -0700 (PDT) Received: from localhost.localdomain.com (024-205-208-113.res.spectrum.com. [24.205.208.113]) by smtp.gmail.com with ESMTPSA id y15-20020a056870b00f00b000d75f1d9b81sm7762654oae.46.2022.03.15.05.41.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 15 Mar 2022 05:41:54 -0700 (PDT) From: trix@redhat.com To: mst@redhat.com, jasowang@redhat.com, nathan@kernel.org, ndesaulniers@google.com, lingshan.zhu@intel.com, sgarzare@redhat.com, xieyongji@bytedance.com Cc: virtualization@lists.linux-foundation.org, linux-kernel@vger.kernel.org, llvm@lists.linux.dev, Tom Rix Subject: [PATCH] vDPA/ifcvf: match pointer check to use Date: Tue, 15 Mar 2022 05:41:30 -0700 Message-Id: <20220315124130.1710030-1-trix@redhat.com> X-Mailer: git-send-email 2.26.3 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Tom Rix Clang static analysis reports this issue ifcvf_main.c:49:4: warning: Called function pointer is null (null dereference) vf->vring->cb.callback(vring->cb.private); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ The check vring =3D &vf->vring[i]; if (vring->cb.callback) Does not match the use. Change dereference so they match. Fixes: 79333575b8bd ("vDPA/ifcvf: implement shared IRQ feature") Signed-off-by: Tom Rix --- drivers/vdpa/ifcvf/ifcvf_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/vdpa/ifcvf/ifcvf_main.c b/drivers/vdpa/ifcvf/ifcvf_mai= n.c index 3b48e717e89f7..4366320fb68d3 100644 --- a/drivers/vdpa/ifcvf/ifcvf_main.c +++ b/drivers/vdpa/ifcvf/ifcvf_main.c @@ -46,7 +46,7 @@ static irqreturn_t ifcvf_vqs_reused_intr_handler(int irq,= void *arg) for (i =3D 0; i < vf->nr_vring; i++) { vring =3D &vf->vring[i]; if (vring->cb.callback) - vf->vring->cb.callback(vring->cb.private); + vring->cb.callback(vring->cb.private); } =20 return IRQ_HANDLED; --=20 2.26.3