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Tue, 30 Jun 2020 09:03:57 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-112-121.ams2.redhat.com [10.36.112.121]) by smtp.corp.redhat.com (Postfix) with ESMTPS id D0694741AD; Tue, 30 Jun 2020 09:03:56 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 1178C113847E; Tue, 30 Jun 2020 11:03:52 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Subject: [PATCH v3 18/26] riscv_hart: Fix riscv_harts_realize() error API violations Date: Tue, 30 Jun 2020 11:03:43 +0200 Message-Id: <20200630090351.1247703-19-armbru@redhat.com> In-Reply-To: <20200630090351.1247703-1-armbru@redhat.com> References: <20200630090351.1247703-1-armbru@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=armbru@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=205.139.110.61; envelope-from=armbru@redhat.com; helo=us-smtp-delivery-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/06/30 01:11:03 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -30 X-Spam_score: -3.1 X-Spam_bar: --- X-Spam_report: (-3.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1, 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_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=_AUTOLEARN 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: qemu-riscv@nongnu.org, Sagar Karandikar , Bastian Koppelmann , Alistair Francis , Palmer Dabbelt , Bin Meng Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" The Error ** argument must be NULL, &error_abort, &error_fatal, or a pointer to a variable containing NULL. Passing an argument of the latter kind twice without clearing it in between is wrong: if the first call sets an error, it no longer points to NULL for the second call. riscv_harts_realize() is wrong that way: it passes @errp to riscv_hart_realize() in a loop. I can't tell offhand whether this can fail. Fix by checking for failure in each iteration. Cc: Palmer Dabbelt Cc: Alistair Francis Cc: Sagar Karandikar Cc: Bastian Koppelmann Cc: Bin Meng Cc: qemu-riscv@nongnu.org Signed-off-by: Markus Armbruster Reviewed-by: Alistair Francis --- hw/riscv/riscv_hart.c | 14 +++++--------- 1 file changed, 5 insertions(+), 9 deletions(-) diff --git a/hw/riscv/riscv_hart.c b/hw/riscv/riscv_hart.c index e26c382259..f59fe52f0f 100644 --- a/hw/riscv/riscv_hart.c +++ b/hw/riscv/riscv_hart.c @@ -40,19 +40,13 @@ static void riscv_harts_cpu_reset(void *opaque) cpu_reset(CPU(cpu)); } -static void riscv_hart_realize(RISCVHartArrayState *s, int idx, +static bool riscv_hart_realize(RISCVHartArrayState *s, int idx, char *cpu_type, Error **errp) { - Error *err = NULL; - object_initialize_child(OBJECT(s), "harts[*]", &s->harts[idx], cpu_type); s->harts[idx].env.mhartid = s->hartid_base + idx; qemu_register_reset(riscv_harts_cpu_reset, &s->harts[idx]); - qdev_realize(DEVICE(&s->harts[idx]), NULL, &err); - if (err) { - error_propagate(errp, err); - return; - } + return qdev_realize(DEVICE(&s->harts[idx]), NULL, errp); } static void riscv_harts_realize(DeviceState *dev, Error **errp) @@ -63,7 +57,9 @@ static void riscv_harts_realize(DeviceState *dev, Error **errp) s->harts = g_new0(RISCVCPU, s->num_harts); for (n = 0; n < s->num_harts; n++) { - riscv_hart_realize(s, n, s->cpu_type, errp); + if (!riscv_hart_realize(s, n, s->cpu_type, errp)) { + return; + } } }