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Mon, 03 Nov 2025 13:06:42 -0800 (PST) X-Google-Smtp-Source: AGHT+IEzcjDtRhaAc5+MuRoat9YXC6wz9fw2LxPPsgI+htkumYzq511qOktleFJzNhyTw681TNwVvQ== X-Received: by 2002:a05:622a:8307:b0:4ed:62f5:e1fc with SMTP id d75a77b69052e-4ed62f5eef0mr3203731cf.75.1762204002219; Mon, 03 Nov 2025 13:06:42 -0800 (PST) From: Peter Xu To: qemu-devel@nongnu.org Cc: Fabiano Rosas , David Hildenbrand , peterx@redhat.com, Paolo Bonzini Subject: [PULL 10/36] migration/cpr: Avoid crashing QEMU when cpr-exec runs with no args Date: Mon, 3 Nov 2025 16:05:59 -0500 Message-ID: <20251103210625.3689448-11-peterx@redhat.com> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20251103210625.3689448-1-peterx@redhat.com> References: <20251103210625.3689448-1-peterx@redhat.com> 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=170.10.133.124; envelope-from=peterx@redhat.com; helo=us-smtp-delivery-124.mimecast.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, 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_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_PASS=-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 @redhat.com) X-ZM-MESSAGEID: 1762204350302154100 Content-Type: text/plain; charset="utf-8" If an user invokes cpr-exec without setting the exec args first, currently it'll crash QEMU. Avoid it, instead fail the QMP migrate command. Reviewed-by: Fabiano Rosas Link: https://lore.kernel.org/r/20251021220407.2662288-5-peterx@redhat.com Signed-off-by: Peter Xu --- migration/migration.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/migration/migration.c b/migration/migration.c index c8a5712993..4ed2a2e881 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -2195,6 +2195,12 @@ static bool migrate_prepare(MigrationState *s, bool = resume, Error **errp) error_setg(errp, "Cannot use %s with CPR", conflict); return false; } + + if (s->parameters.mode =3D=3D MIG_MODE_CPR_EXEC && + !s->parameters.cpr_exec_command) { + error_setg(errp, "Parameter 'cpr-exec-command' required for cp= r-exec"); + return false; + } } =20 if (migrate_init(s, errp)) { --=20 2.50.1