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[176.184.43.236]) by smtp.gmail.com with ESMTPSA id i10-20020a5d438a000000b00336344c3c3fsm359398wrq.90.2024.01.10.22.47.25 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Wed, 10 Jan 2024 22:47:28 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1704955648; x=1705560448; darn=nongnu.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=b4rLIFz3jamF5IQE8fOjn3Vo0LdIj7ZxS3Uv6QB7pgQ=; b=BBhCz0cdlfSOhO0QjesgQoylhYt+rh9Z+5Euz/KGxl3hdvxv2/YbWLVTm0TMwIXGXu o4ius9wWtxEIpRssJKxmgmsKED7ApvD6jTJs8fTJV9seZmBBacg7FD7lNdGckm6ahQTe ZTVl4A9wrPmSRjYEv1VFVlVFAYzZqrvvdnpFuatAeDPgBi6HJnJVL8YxgnkqeVyjKanz ebIr8hhY0EaxtLfuUh/ane1MarcB4pVhH5MAp4lbwv22RzSWkdKbf/y2cpGh19KCpoe8 EZXn7bypW1CA/oUXFmNF0LoVYClO1Ea1QRf7gznGKBKaSzZ5u3G3VlKSoc8ZmOHuq2jF simg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1704955648; x=1705560448; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=b4rLIFz3jamF5IQE8fOjn3Vo0LdIj7ZxS3Uv6QB7pgQ=; b=SsLGZZr4aMn5mJ5NBnR8yXvRBG2yl70ymvmT7pzg7aQuGDQEuuqckF4phk7fib62ek fUBIok1mN6i2SXB2ad3iKV5Hg1wr7VenhGInkt4VSVpLuSejmeCVyGgGalLOdPXRaiMg weABaNFaHuXxli7B2KkoQlFK7onhzAN4f0FfxGhM6HHk4hWpPammywA8euEcdjSTXcwB 5K5s0uuwat4NMf9Ji1dkTSsO+hF0+WAtLvXGqDrWLXRQS+kX/MBxJzw3L9paT9YMeRPz 6Kb20Os4XmDLmG1jvwwWzrNTG5awY+ZXwxaN4WPKhbh1xAQM9vv130H6w7b4glYWDDp6 o3hA== X-Gm-Message-State: AOJu0Yxw1iAEYUyXG4le2OExICTu2SDXDaYpSSRue60a0fHN+ntiDJjU Aha44e2oNrMrC+YCoA1H6XdsiDKaoWFaXIf2za4q8eeHFuM= X-Google-Smtp-Source: AGHT+IEvv6PGl8OJK8VqCXpwjb/3SBRfziDD78uPfd0ekPy5or38xv7r0oBGHXV1YGouweywSXai9g== X-Received: by 2002:a05:600c:6cf:b0:40e:4e43:db55 with SMTP id b15-20020a05600c06cf00b0040e4e43db55mr105241wmn.70.1704955648385; Wed, 10 Jan 2024 22:47:28 -0800 (PST) From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Cc: Daniel Henrique Barboza , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Paolo Bonzini , Yanan Wang , Nicholas Piggin , =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= , Richard Henderson , Marcel Apfelbaum , Eduardo Habkost , qemu-ppc@nongnu.org, Gavin Shan , Peter Maydell Subject: [PATCH] hw/core: Handle cpu_model_from_type() returning NULL value Date: Thu, 11 Jan 2024 07:47:23 +0100 Message-ID: <20240111064723.6920-1-philmd@linaro.org> X-Mailer: git-send-email 2.41.0 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::336; envelope-from=philmd@linaro.org; helo=mail-wm1-x336.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-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1704955730613100001 Per cpu_model_from_type() docstring (added in commit 445946f4dd): * Returns: CPU model name or NULL if the CPU class doesn't exist We must check the return value in order to avoid surprises, i.e.: $ qemu-system-arm -machine virt -cpu cortex-a9 qemu-system-arm: Invalid CPU model: cortex-a9 The valid models are: cortex-a7, cortex-a15, (null), (null), (null), (nul= l), (null), (null), (null), (null), (null), (null), (null), max Add assertions when the call can not fail (because the CPU type must be registered). Fixes: 5422d2a8fa ("machine: Print CPU model name instead of CPU type") Reported-by: Peter Maydell Signed-off-by: Philippe Mathieu-Daud=C3=A9 --- cpu-target.c | 1 + hw/core/machine.c | 5 +++++ target/ppc/cpu_init.c | 1 + 3 files changed, 7 insertions(+) diff --git a/cpu-target.c b/cpu-target.c index 5eecd7ea2d..b0f6deb13b 100644 --- a/cpu-target.c +++ b/cpu-target.c @@ -291,6 +291,7 @@ static void cpu_list_entry(gpointer data, gpointer user= _data) const char *typename =3D object_class_get_name(OBJECT_CLASS(data)); g_autofree char *model =3D cpu_model_from_type(typename); =20 + assert(model); if (cc->deprecation_note) { qemu_printf(" %s (deprecated)\n", model); } else { diff --git a/hw/core/machine.c b/hw/core/machine.c index fc239101f9..730ec10328 100644 --- a/hw/core/machine.c +++ b/hw/core/machine.c @@ -1422,16 +1422,21 @@ static bool is_cpu_type_supported(const MachineStat= e *machine, Error **errp) /* The user specified CPU type isn't valid */ if (!mc->valid_cpu_types[i]) { g_autofree char *requested =3D cpu_model_from_type(machine->cp= u_type); + assert(requested); error_setg(errp, "Invalid CPU model: %s", requested); if (!mc->valid_cpu_types[1]) { g_autofree char *model =3D cpu_model_from_type( mc->valid_cpu_types[0]); + assert(model); error_append_hint(errp, "The only valid type is: %s\n", mo= del); } else { error_append_hint(errp, "The valid models are: "); for (i =3D 0; mc->valid_cpu_types[i]; i++) { g_autofree char *model =3D cpu_model_from_type( mc->valid_cpu_types[i]); + if (!model) { + continue; + } error_append_hint(errp, "%s%s", model, mc->valid_cpu_types[i + 1] ? ", " : = ""); diff --git a/target/ppc/cpu_init.c b/target/ppc/cpu_init.c index 344196a8ce..58f0c1e30e 100644 --- a/target/ppc/cpu_init.c +++ b/target/ppc/cpu_init.c @@ -7037,6 +7037,7 @@ static void ppc_cpu_list_entry(gpointer data, gpointe= r user_data) } =20 name =3D cpu_model_from_type(typename); + assert(name); qemu_printf("PowerPC %-16s PVR %08x\n", name, pcc->pvr); for (i =3D 0; ppc_cpu_aliases[i].alias !=3D NULL; i++) { PowerPCCPUAlias *alias =3D &ppc_cpu_aliases[i]; --=20 2.41.0