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bh=GSqVm/KgbrzU6qODZkZODJ8w9yZNykzM/TsBNSVpeWk=; b=Tj2A9Qj7R+JKAiUY4JgPvOnRjcqqkrIFlvmCg2PJ4LjYYz4ysBhQHm7iTidq1brwxTAkMC fJO8AIBxvuLBXHN8mWGkB4dI5/kjN235IP1X8+L6ZISicha8+51Kr952Lk8hdD1oKrwLDy Fv42g4qXsGcmUq6mskng+mDg8TnnI8Y= X-MC-Unique: XsdCSUo2O4Wk_pKIXQigbg-1 From: Eduardo Habkost To: qemu-devel@nongnu.org Subject: [PATCH 1/7] sparc: Fix property/field size mismatch for iu-version Date: Wed, 4 Nov 2020 12:25:06 -0500 Message-Id: <20201104172512.2381656-2-ehabkost@redhat.com> In-Reply-To: <20201104172512.2381656-1-ehabkost@redhat.com> References: <20201104172512.2381656-1-ehabkost@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=ehabkost@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com 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=216.205.24.124; envelope-from=ehabkost@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/11/03 00:03:41 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] 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, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, 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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Igor Mammedov , Mark Cave-Ayland , "Daniel P. Berrange" , Artyom Tarasenko , Paolo Bonzini Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" The "iu-version" property is declared as uint64_t but points to a target_ulong struct field. On the sparc 32-bit target, This makes every write of iu-version corrupt the 4 bytes after sparc_def_t.iu_version (where the fpu_version field is located). Change the type of the iu_version struct field to uint64_t, and just use DEFINE_PROP_UINT64. The only place where env.def.iu_version field is read is the env->version =3D env->def.iu_version; assignment at sparc_cpu_realizefn(). This means behavior will be kept exactly the same (except for the memory corruption bug fix). It would be nice to explicitly validate iu_version against target_ulong limits, but that would be a new feature (since the first version of this code, iu-version was parsed as 64-bit value value). It can be done later, once we have an appropriate API to define limits for integer properties. Fixes: de05005bf785 ("sparc: convert cpu features to qdev properties") Signed-off-by: Eduardo Habkost Acked-by: Mark Cave-Ayland --- Cc: Mark Cave-Ayland Cc: Artyom Tarasenko Cc: qemu-devel@nongnu.org --- target/sparc/cpu.h | 2 +- target/sparc/cpu.c | 5 ++--- 2 files changed, 3 insertions(+), 4 deletions(-) diff --git a/target/sparc/cpu.h b/target/sparc/cpu.h index b9369398f2..8ed0f4fef3 100644 --- a/target/sparc/cpu.h +++ b/target/sparc/cpu.h @@ -252,7 +252,7 @@ typedef struct trap_state { =20 struct sparc_def_t { const char *name; - target_ulong iu_version; + uint64_t iu_version; uint32_t fpu_version; uint32_t mmu_version; uint32_t mmu_bm; diff --git a/target/sparc/cpu.c b/target/sparc/cpu.c index ec59a13eb8..5a9397f19a 100644 --- a/target/sparc/cpu.c +++ b/target/sparc/cpu.c @@ -576,7 +576,7 @@ void sparc_cpu_list(void) unsigned int i; =20 for (i =3D 0; i < ARRAY_SIZE(sparc_defs); i++) { - qemu_printf("Sparc %16s IU " TARGET_FMT_lx + qemu_printf("Sparc %16s IU %" PRIx64 " FPU %08x MMU %08x NWINS %d ", sparc_defs[i].name, sparc_defs[i].iu_version, @@ -838,8 +838,7 @@ static Property sparc_cpu_properties[] =3D { DEFINE_PROP_BIT("hypv", SPARCCPU, env.def.features, 11, false), DEFINE_PROP_BIT("cmt", SPARCCPU, env.def.features, 12, false), DEFINE_PROP_BIT("gl", SPARCCPU, env.def.features, 13, false), - DEFINE_PROP_UNSIGNED("iu-version", SPARCCPU, env.def.iu_version, 0, - prop_info_uint64, target_ulong), + DEFINE_PROP_UINT64("iu-version", SPARCCPU, env.def.iu_version, 0), DEFINE_PROP_UINT32("fpu-version", SPARCCPU, env.def.fpu_version, 0), DEFINE_PROP_UINT32("mmu-version", SPARCCPU, env.def.mmu_version, 0), DEFINE_PROP("nwindows", SPARCCPU, env.def.nwindows, --=20 2.28.0