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([2602:ae:1547:e101:3cf2:c634:5b19:25f6]) by smtp.gmail.com with ESMTPSA id s18-20020aa78d52000000b0050dc76281fdsm13235645pfe.215.2022.06.07.13.37.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 07 Jun 2022 13:37:05 -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:in-reply-to:references :mime-version:content-transfer-encoding; bh=Khgw4zesO+K18d95Nf0OQk5x631DSo+q5LDKVsiqTz0=; b=N9gZLZL0XzwCu+XWXFvYMP66wJtfVAkHIA8iEBlADwAqwOsUqlWMc/E8i83Hi1uirJ wW8q9Mt4vHtZhyMZXTCXLJzAJKyordQwIIefMScAK1qusuP0Urk71IT7KNQKpJ5OjJNA 9MAcV8TMI0cvoFuqQO59zUzmJr1y0KLqjZSIzWmrJBiFgoPfFLw73zKPalDCqW2MZXi5 wjjkYRwvURAaoiLuq8+GTHC5In1ye4r6OI6mhoNSMqv8TG1dUyIAx4U7zIJc70FpB0up RLJJJPO21n1V82aCQ7RP5g8RBofeQVrsMW6EpcZ5iHTfSeHirJ0WopZYC6VrlbHWKPKx xnFA== 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:in-reply-to :references:mime-version:content-transfer-encoding; bh=Khgw4zesO+K18d95Nf0OQk5x631DSo+q5LDKVsiqTz0=; b=B3X2vrdSFtyVdXZLx5iq8C4mY25yW4PbCMmRRhRS6/Q3PBVr+5oZ9OT/avtmGZ3sTZ Hp7yV/y74Hv+4eCe1uJCOX78rv7gvYMvXfmvGE4CgVVcpw87zcjs/jAtpaplhHtZD1pf fWrkFd6t3QKwN2t6vPo3vY1RbH6BV/4wg+loqjO0KgnAegIt/D5CHRT91dh+UUNw03BF tWsmdFXcOs2wIknyOfkkPk6jZnndk1oD04X2RlYa3CHyqSEmW4A5EnQBUe+m6COlewKg hgTDJpcKhXckWY+Zu4zBAEXE9CzDtXxD0BFqGU+nDpPiQJ7KVfdPYax5LsOI+L3CrNMV Z5BA== X-Gm-Message-State: AOAM531ztl5SFPYPKtJYVwA6dCeW+F+jp39s931kSUAENQ0ss7wEGO52 YW/+tm6MunBEX0tFmARpQQ+h+5Oqg3w9Jw== X-Google-Smtp-Source: ABdhPJzfgWi/dB/dlLJgpKzbeEhPUMpb4l5Lo0mAoRsL5E/OB2hD81t+O8ImkoOo6pqJumW6chwdng== X-Received: by 2002:a63:524a:0:b0:3fc:7f18:685d with SMTP id s10-20020a63524a000000b003fc7f18685dmr27469956pgl.387.1654634226114; Tue, 07 Jun 2022 13:37:06 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: peter.maydell@linaro.org, qemu-arm@nongnu.org Subject: [PATCH v2 63/71] linux-user/aarch64: Do not allow duplicate or short sve records Date: Tue, 7 Jun 2022 13:32:58 -0700 Message-Id: <20220607203306.657998-64-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220607203306.657998-1-richard.henderson@linaro.org> References: <20220607203306.657998-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable 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=2607:f8b0:4864:20::529; envelope-from=richard.henderson@linaro.org; helo=mail-pg1-x529.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 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, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=unavailable 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: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1654638389744100001 Content-Type: text/plain; charset="utf-8" In parse_user_sigframe, the kernel rejects duplicate sve records, or records that are smaller than the header. We were silently allowing these cases to pass, dropping the record. Signed-off-by: Richard Henderson --- linux-user/aarch64/signal.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/linux-user/aarch64/signal.c b/linux-user/aarch64/signal.c index 8b352abb97..8fbe98d72f 100644 --- a/linux-user/aarch64/signal.c +++ b/linux-user/aarch64/signal.c @@ -318,10 +318,13 @@ static int target_restore_sigframe(CPUARMState *env, break; =20 case TARGET_SVE_MAGIC: + if (sve || size < sizeof(struct target_sve_context)) { + goto err; + } if (cpu_isar_feature(aa64_sve, env_archcpu(env))) { vq =3D sve_vq(env); sve_size =3D QEMU_ALIGN_UP(TARGET_SVE_SIG_CONTEXT_SIZE(vq)= , 16); - if (!sve && size =3D=3D sve_size) { + if (size =3D=3D sve_size) { sve =3D (struct target_sve_context *)ctx; break; } --=20 2.34.1