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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::42e; envelope-from=paolo.bonzini@gmail.com; helo=mail-wr1-x42e.google.com X-Spam_score_int: -14 X-Spam_score: -1.5 X-Spam_bar: - X-Spam_report: (-1.5 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FORGED_FROMDOMAIN=0.25, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.249, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no 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: , 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" If a READ CAPACITY command would fail, for example s->qdev.blocksize would = be set to zero and cause a division by zero on the next use. Signed-off-by: Paolo Bonzini --- hw/scsi/scsi-generic.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/hw/scsi/scsi-generic.c b/hw/scsi/scsi-generic.c index cf7e11cf44..f9fd2ccfdd 100644 --- a/hw/scsi/scsi-generic.c +++ b/hw/scsi/scsi-generic.c @@ -288,7 +288,10 @@ static void scsi_read_complete(void * opaque, int ret) } } =20 - if (len =3D=3D 0) { + if (r->io_header.host_status !=3D SCSI_HOST_OK || + (r->io_header.driver_status & SG_ERR_DRIVER_TIMEOUT) || + r->io_header.status !=3D GOOD || + len =3D=3D 0) { scsi_command_complete_noio(r, 0); goto done; } --=20 2.29.2