From nobody Sun Feb 8 15:01:49 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=linaro.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1648838892053556.5417205676041; Fri, 1 Apr 2022 11:48:12 -0700 (PDT) Received: from localhost ([::1]:33752 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1naMJd-0005cR-Je for importer@patchew.org; Fri, 01 Apr 2022 14:48:09 -0400 Received: from eggs.gnu.org ([209.51.188.92]:60868) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1naMII-0004vP-4I for qemu-devel@nongnu.org; Fri, 01 Apr 2022 14:46:47 -0400 Received: from [2a00:1450:4864:20::62b] (port=40854 helo=mail-ej1-x62b.google.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1naMIG-0006aO-Ag for qemu-devel@nongnu.org; Fri, 01 Apr 2022 14:46:45 -0400 Received: by mail-ej1-x62b.google.com with SMTP id p15so7642019ejc.7 for ; Fri, 01 Apr 2022 11:46:43 -0700 (PDT) Received: from localhost.localdomain ([185.81.138.17]) by smtp.gmail.com with ESMTPSA id e19-20020a056402105300b004162d0b4cbbsm1476604edu.93.2022.04.01.11.46.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 01 Apr 2022 11:46:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=YNzw+URHGp1u96ZqBNFo6KFfc/Xd8zer3eIM26tUpsQ=; b=sGkdsEvlOedtK6gMKbJ050WQZDz+RtvtwN35r1FKv3Tofovn7tjATTNcgXPlcpPK2h frB/lW5d86vWRZp/y0Gdtb6pj8P0AIkJ0NIAoyCnjf2/L6OD8ioNf6SFR/IfDnk/veRs Nw4nkLUkV+soc/cCXDwwcx8msBd5jBK7BCzkxb0HhUQ+smsoH+Q0K12TwcyJogOpxClF huhpqEmPpE7sX1/3eL2X14SEM/058BbdDFoFX6TvEWLyyovOgssrCmqAFh9AOGeqEU0x nAnnZIxyOAoWYvBi5Lg6ykHqFFF909gHTvwsnid2e5HgrRuaB/azfWQYrg+2v8I62SHE 9ivg== 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=YNzw+URHGp1u96ZqBNFo6KFfc/Xd8zer3eIM26tUpsQ=; b=KVFu5IG+d4OYSjdhqjrkm3rBWfDs2GtnZ5tZCH1TJTIUOsbUktMOPdBmd48yovPTGm Opr3ZAiENwWTDRZJ5r7b3IA507dD/lFjHb+dz2+hv3rDHg4TbWT1MuLjANyHakeHodUf BtvvbXii7Gkzhxh7oblHI9iqqEm8plfrCmqG9d9aY39IEk236jNb4vChrcDyUrhlBO1t sIRIY65MYV8uEfTsW36xcLFH77ekiEoroJcDYyRiS7KqipxtHJTL/x1jx/uYW7DTM/AG SF0tHxHOUqM+3af2yRqM+IERJe8h1w/t58IPxi2WhkXMCe3729Z/6ljiKjar3bDUikr3 WjcQ== X-Gm-Message-State: AOAM5325o/ImiLn2GmP7tA3GKE0VY9dqu2JkOKF1ULqTpSN12tb0YJwX h2qFukIspPO8eu+tJxLt2inrMriEhYRhJVj4l+Q= X-Google-Smtp-Source: ABdhPJzkahKnj07aGF5bEL9jXLcdqLoeRDNQyZQABfBiCc3NHiCR71ngZK9MLYBWUS7LZxCN9vPeyA== X-Received: by 2002:a17:907:6e88:b0:6da:8f01:7a8f with SMTP id sh8-20020a1709076e8800b006da8f017a8fmr988856ejc.619.1648838802626; Fri, 01 Apr 2022 11:46:42 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH] target/i386: Suppress coverity warning on fsave/frstor Date: Fri, 1 Apr 2022 12:46:35 -0600 Message-Id: <20220401184635.327423-1-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Host-Lookup-Failed: Reverse DNS lookup failed for 2a00:1450:4864:20::62b (failed) Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::62b; envelope-from=richard.henderson@linaro.org; helo=mail-ej1-x62b.google.com X-Spam_score_int: -6 X-Spam_score: -0.7 X-Spam_bar: / X-Spam_report: (-0.7 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, PDS_HP_HELO_NORDNS=0.659, RCVD_IN_DNSWL_NONE=-0.0001, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: eduardo@habkost.net, pbonzini@redhat.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZM-MESSAGEID: 1648838896619100001 Content-Type: text/plain; charset="utf-8" Coverity warns that 14 << data32 may overflow with respect to the target_ulong to which it is subsequently added. We know this wasn't true because data32 is in [1,2], but the suggested fix is perfectly fine. Fixes: Coverity CID 1487135, 1487256 Signed-off-by: Richard Henderson Reviewed-by: Damien Hedde --- target/i386/tcg/fpu_helper.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/target/i386/tcg/fpu_helper.c b/target/i386/tcg/fpu_helper.c index ebf5e73df9..30bc44fcf8 100644 --- a/target/i386/tcg/fpu_helper.c +++ b/target/i386/tcg/fpu_helper.c @@ -2466,7 +2466,7 @@ static void do_fsave(CPUX86State *env, target_ulong p= tr, int data32, =20 do_fstenv(env, ptr, data32, retaddr); =20 - ptr +=3D (14 << data32); + ptr +=3D (target_ulong)14 << data32; for (i =3D 0; i < 8; i++) { tmp =3D ST(i); do_fstt(env, tmp, ptr, retaddr); @@ -2488,7 +2488,7 @@ static void do_frstor(CPUX86State *env, target_ulong = ptr, int data32, int i; =20 do_fldenv(env, ptr, data32, retaddr); - ptr +=3D (14 << data32); + ptr +=3D (target_ulong)14 << data32; =20 for (i =3D 0; i < 8; i++) { tmp =3D do_fldt(env, ptr, retaddr); --=20 2.25.1