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Tue, 30 Jul 2024 09:35:23 -0700 (PDT) X-Google-Smtp-Source: AGHT+IGmvq4Uelr00YF9mmINUcQe9XyVcrJR1KrVCD13O05oy9MV4yBmfpaM+BwcGXGIOQMzGECINw== X-Received: by 2002:a17:907:2da8:b0:a7a:a7b8:ada7 with SMTP id a640c23a62f3a-a7d400746d3mr862765066b.24.1722357322643; Tue, 30 Jul 2024 09:35:22 -0700 (PDT) From: Paolo Bonzini To: qemu-devel@nongnu.org Cc: aharivel@redhat.com Subject: [PATCH 1/2] qemu-vmsr-helper: fix socket loop breakage Date: Tue, 30 Jul 2024 18:35:15 +0200 Message-ID: <20240730163516.83566-2-pbonzini@redhat.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20240730163516.83566-1-pbonzini@redhat.com> References: <20240730163516.83566-1-pbonzini@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=170.10.129.124; envelope-from=pbonzini@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.125, 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=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: 1722357359563116600 Content-Type: text/plain; charset="utf-8" Between v5 and v6 of the series, the socket loop of qemu-vmsr-helper was ch= anged to allow sending multiple requests on the same socket. Unfortunately, the con= dition of the while loop is botched and the loop will never be entered. Clean it = up, and also unify the handling of error reporting. Signed-off-by: Paolo Bonzini --- tools/i386/qemu-vmsr-helper.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/tools/i386/qemu-vmsr-helper.c b/tools/i386/qemu-vmsr-helper.c index ebf562c3ff8..bac3ea70393 100644 --- a/tools/i386/qemu-vmsr-helper.c +++ b/tools/i386/qemu-vmsr-helper.c @@ -227,19 +227,17 @@ static void coroutine_fn vh_co_entry(void *opaque) &peer_pid, &local_err); if (r < 0) { - error_report_err(local_err); goto out; } =20 - while (r < 0) { + for (;;) { /* * Read the requested MSR * Only RAPL MSR in rapl-msr-index.h is allowed */ r =3D qio_channel_read_all(QIO_CHANNEL(client->ioc), (char *) &request, sizeof(request), &local= _err); - if (r < 0) { - error_report_err(local_err); + if (r <=3D 0) { break; } =20 @@ -261,11 +259,15 @@ static void coroutine_fn vh_co_entry(void *opaque) sizeof(vmsr), &local_err); if (r < 0) { - error_report_err(local_err); break; } } + out: + if (local_err) { + error_report_err(local_err); + } + object_unref(OBJECT(client->ioc)); g_free(client); } --=20 2.45.2