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Tue, 24 Feb 2026 11:00:51 -0800 (PST) From: David Hamilton To: qemu-devel@nongnu.org Cc: David Hamilton Subject: [PATCH 2/2] hw/misc/ivshmem-pci: Check error after setup_interrupt() in process_msg_connect() Date: Tue, 24 Feb 2026 14:00:04 -0500 Message-ID: <20260224190004.84187-3-dahamilt0@gmail.com> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20260224190004.84187-1-dahamilt0@gmail.com> References: <20260224190004.84187-1-dahamilt0@gmail.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=2607:f8b0:4864:20::82c; envelope-from=dahamilt0@gmail.com; helo=mail-qt1-x82c.google.com X-Spam_score_int: -17 X-Spam_score: -1.8 X-Spam_bar: - X-Spam_report: (-1.8 / 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, FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-Mailman-Approved-At: Tue, 24 Feb 2026 16:23:21 -0500 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development 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 @gmail.com) X-ZM-MESSAGEID: 1771968242220158500 Content-Type: text/plain; charset="utf-8" setup_interrupt() can fail and report via errp, but process_msg_connect() was ignoring the error and continuing to ivshmem_add_eventfd(). Add ERRP_GUARD() and check *errp to avoid operating on a vector whose interrupt setup failed. Resolves the TODO comment at the call site. Signed-off-by: David Hamilton --- hw/misc/ivshmem-pci.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/hw/misc/ivshmem-pci.c b/hw/misc/ivshmem-pci.c index 45b0e20363..85614feca0 100644 --- a/hw/misc/ivshmem-pci.c +++ b/hw/misc/ivshmem-pci.c @@ -528,6 +528,7 @@ static void process_msg_disconnect(IVShmemState *s, uin= t16_t posn, static void process_msg_connect(IVShmemState *s, uint16_t posn, int fd, Error **errp) { + ERRP_GUARD(); Peer *peer =3D &s->peers[posn]; int vector; =20 @@ -554,7 +555,9 @@ static void process_msg_connect(IVShmemState *s, uint16= _t posn, int fd, =20 if (posn =3D=3D s->vm_id) { setup_interrupt(s, vector, errp); - /* TODO do we need to handle the error? */ + if (*errp) { + return; + } } =20 if (ivshmem_has_feature(s, IVSHMEM_IOEVENTFD)) { --=20 2.50.1 (Apple Git-155)