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[88.187.86.199]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-46fb482b9absm228450055e9.2.2025.10.13.12.18.40 for (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Mon, 13 Oct 2025 12:18:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1760383122; x=1760987922; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:from:to:cc:subject:date:message-id :reply-to; bh=ImXH8sypVIhpdMufqY4sc5FsVXIt9DpvDMKcR5HfhOE=; b=qKFpw6iVGiJ3hBCB7ZfIKnTZCeY/w+3qs3Rqm1yARNcnacLtUpaGSajeTsodjxIOtM SDV5pyoghadLjJKoo9Zq/SrDcw4MJZKOFPF7ChNH5QBDoDzfwp6RBcQgmdACYYOGEXRo tdVjK+AzRR+yKOG66Y16WlBaFT/U/4mSk/6/avsIR5/t4HCL6iuwBPUHLqYBQj9dZxtD NHWJW7hXCUKLmkvZSVAZO36qas1qR6ExAzC3Qgoe7CZQCRv8HgXQoVK4btrOks4K4za3 nTDXaR/nZQxi1oQEc4LuT+4CrTbhoJOP7wPYg6Xoc3i730bm72kaQgxNNo13WS+If+Jk yDUg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1760383122; x=1760987922; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=ImXH8sypVIhpdMufqY4sc5FsVXIt9DpvDMKcR5HfhOE=; b=KZX903SsDO8+FYBY/o0wPkjokgQJfENCNYVxYQJEGELh4ITSWNzrliJDXM1+iRTg4I QqNCBUkJyYSpXCcq1tcNUWClOcFl60eujhUhs/+eoh/yPSLyd4yNaMwDHtrvLfVroWmp /BKLsZ7EUjcW37kVhS4eOwKGAvP7ffC/7jydHT2/75U1Vc9RLUatkyEduAtA/jXOLLcZ d0TQvgZpP6wus8diSadTPrBf8pHmd5w9wyRYNoVNf7wBU7Xb66VFDISljIlVjobNwAH5 5BzTS0IWD0XIUcfRqJSAeHhl0Gtp+FfE4RVBrL26OjaofkwhEz4iOYGU/ccDxdz8YGrj ENjQ== X-Gm-Message-State: AOJu0YzzwCWMuqN8Yc8azPn6aroBI4MSHOGIeAmdnUgqvlhc+dE73TE0 PJa8QObsYlY5Bvws/JAMQcN9W9IPZCVy9530KWbu7WecwqkU6t/MbA8LQ/nT4U5jy8fRVdzHBnS G7vNEQlqzkA== X-Gm-Gg: ASbGncvOIpWrG9q69mEC16Qyy8dopjw/SRg7m4XWryvNeNAA+3FeOBbFA179z3Xcd+E ciwnIbXVdcbI3nqS+ym19JcK+4IAMzzTqijA9jCc2ya6WGgQx9C0uYUAV0NgGh8Id3lS6jVmMGf FGwboDU0H7virHYrBgpnzSwyQhfWlocwAFrtT3Bp0Y6jtZk6FvHlbDpGNYMnZGX7pp8N7KSPteL 4YQyDQ0DX5en9DI80XFsfqOa+yh/Z7CRbt72scVEIQC21jb4dbDK4GU+1/o9XFYQkY/mXMdFL7n jQbiUIUz5AVhFez+GnMqZGwH6Wx5ip5plZb7YVz/koBeVZeE+NTglwFgldjMWsfTtKoBeX9C0Y+ aSk+S7cZLynSDSGjdg1+fL5IWW4FVBsPUHNk1J4zJtF+hHlp+Utzr5aWPBYot7AE++4CYg4Tkjh aO4o5bIGl1oCizCl8yA+s= X-Google-Smtp-Source: AGHT+IF5Eb+XA79eXZvnjcvCFm4yRMft5BmVXTBJOWG2i4nOd1dhHE6GO1wIG7DG69IC1V5EWULtmA== X-Received: by 2002:a05:600d:18:b0:46f:b43a:aeed with SMTP id 5b1f17b1804b1-46fb43aaf3cmr78144095e9.40.1760383121761; Mon, 13 Oct 2025 12:18:41 -0700 (PDT) From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Subject: [PULL 07/12] hw/s390x/sclp: Do not ignore address_space_read/write() errors Date: Mon, 13 Oct 2025 21:18:02 +0200 Message-ID: <20251013191807.84550-8-philmd@linaro.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251013191807.84550-1-philmd@linaro.org> References: <20251013191807.84550-1-philmd@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" 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=2a00:1450:4864:20::32d; envelope-from=philmd@linaro.org; helo=mail-wm1-x32d.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 autolearn=ham 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-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1760383154103154100 If address_space_read() fails, return PGM_ADDRESSING. In the unlikely case address_space_write() fails (we already checked the address is readable), return PGM_PROTECTION. Signed-off-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Thomas Huth Reviewed-by: Jason J. Herne Message-Id: <20251007015802.24748-1-philmd@linaro.org> --- hw/s390x/sclp.c | 18 +++++++++++++++--- 1 file changed, 15 insertions(+), 3 deletions(-) diff --git a/hw/s390x/sclp.c b/hw/s390x/sclp.c index 51e88ba8f12..8602a566a49 100644 --- a/hw/s390x/sclp.c +++ b/hw/s390x/sclp.c @@ -306,6 +306,7 @@ int sclp_service_call(S390CPU *cpu, uint64_t sccb, uint= 32_t code) g_autofree SCCB *work_sccb =3D NULL; AddressSpace *as =3D CPU(cpu)->as; const MemTxAttrs attrs =3D MEMTXATTRS_UNSPECIFIED; + MemTxResult ret; =20 /* first some basic checks on program checks */ if (env->psw.mask & PSW_MASK_PSTATE) { @@ -320,7 +321,10 @@ int sclp_service_call(S390CPU *cpu, uint64_t sccb, uin= t32_t code) } =20 /* the header contains the actual length of the sccb */ - address_space_read(as, sccb, attrs, &header, sizeof(SCCBHeader)); + ret =3D address_space_read(as, sccb, attrs, &header, sizeof(SCCBHeader= )); + if (ret !=3D MEMTX_OK) { + return -PGM_ADDRESSING; + } =20 /* Valid sccb sizes */ if (be16_to_cpu(header.length) < sizeof(SCCBHeader)) { @@ -333,7 +337,11 @@ int sclp_service_call(S390CPU *cpu, uint64_t sccb, uin= t32_t code) * the host has checked the values */ work_sccb =3D g_malloc0(be16_to_cpu(header.length)); - address_space_read(as, sccb, attrs, work_sccb, be16_to_cpu(header.leng= th)); + ret =3D address_space_read(as, sccb, attrs, + work_sccb, be16_to_cpu(header.length)); + if (ret !=3D MEMTX_OK) { + return -PGM_ADDRESSING; + } =20 if (!sclp_command_code_valid(code)) { work_sccb->h.response_code =3D cpu_to_be16(SCLP_RC_INVALID_SCLP_CO= MMAND); @@ -347,7 +355,11 @@ int sclp_service_call(S390CPU *cpu, uint64_t sccb, uin= t32_t code) =20 sclp_c->execute(sclp, work_sccb, code); out_write: - address_space_write(as, sccb, attrs, work_sccb, be16_to_cpu(header.len= gth)); + ret =3D address_space_write(as, sccb, attrs, + work_sccb, be16_to_cpu(header.length)); + if (ret !=3D MEMTX_OK) { + return -PGM_PROTECTION; + } =20 sclp_c->service_interrupt(sclp, sccb); =20 --=20 2.51.0