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b=rA5E2GoBh9K1iUsq9quvhfo/HOu7R6T8+jibkJErWFGKpfN1PeVB7PsZh/KC9z6HC4VQ j2rp+03YC0MrLJnL+KV9+JCn41a0TCiz2eg62rXbBxvs+roiRZrFkrlizaTVf8Upa0fy Ha5g2BdSP7IlWe8gZzHAe9nB0RoQZNRGoQnpjrkd9VwkFYI93URIjRVO1WJnZ41Fmgxe bxelMyoyNxHxkdQhgTvdC5roeoUn4QeOatZ5KwUVnVQvc+Xf37IABj2KS0UJ26Ly6Gvf 0KRVdy/s3VEzOV5AP9SQPU1RGh0W1dMmHCb/WvYDib9dEexk570SHyDIfNMmu2OiJdVG gg== From: Murilo Opsfelder Araujo To: qemu-devel@nongnu.org, qemu-ppc@nongnu.org Cc: Paolo Bonzini , Greg Kurz , David Gibson , Daniel Henrique Barboza , =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= , mopsfelder@gmail.com, Murilo Opsfelder Araujo , Fabiano Rosas Subject: [PATCH v2] target/ppc/kvm: Skip current and parent directories in kvmppc_find_cpu_dt Date: Tue, 12 Jul 2022 18:08:10 -0300 Message-Id: <20220712210810.35514-1-muriloo@linux.ibm.com> X-Mailer: git-send-email 2.36.1 Content-Type: text/plain; charset="utf-8" X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: XP-HfteOCQzu5NFqlBJiJLOHsI-Ntg0- X-Proofpoint-GUID: y9Es0O4dhqE4FkBSrnbe1kNJ6Y-orx7k Content-Transfer-Encoding: quoted-printable X-Proofpoint-UnRewURL: 0 URL was un-rewritten MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.883,Hydra:6.0.517,FMLib:17.11.122.1 definitions=2022-07-12_12,2022-07-12_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 mlxlogscore=780 malwarescore=0 mlxscore=0 impostorscore=0 suspectscore=0 bulkscore=0 priorityscore=1501 lowpriorityscore=0 spamscore=0 clxscore=1015 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2206140000 definitions=main-2207120086 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=148.163.158.5; envelope-from=muriloo@linux.ibm.com; helo=mx0b-001b2d01.pphosted.com X-Spam_score_int: -19 X-Spam_score: -2.0 X-Spam_bar: -- X-Spam_report: (-2.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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" X-ZohoMail-DKIM: pass (identity @ibm.com) X-ZM-MESSAGEID: 1657660379927100001 Some systems have /proc/device-tree/cpus/../clock-frequency. However, this is not the expected path for a CPU device tree directory. Signed-off-by: Murilo Opsfelder Araujo Signed-off-by: Fabiano Rosas Reviewed-by: Daniel Henrique Barboza Reviewed-by: David Gibson --- v2: - Skip current and parent directories. v1: https://lore.kernel.org/qemu-devel/20220711193743.51456-1-muriloo@linux= .ibm.com/ target/ppc/kvm.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/target/ppc/kvm.c b/target/ppc/kvm.c index 6eed466f80..466d0d2f4c 100644 --- a/target/ppc/kvm.c +++ b/target/ppc/kvm.c @@ -1877,6 +1877,12 @@ static int kvmppc_find_cpu_dt(char *buf, int buf_len) buf[0] =3D '\0'; while ((dirp =3D readdir(dp)) !=3D NULL) { FILE *f; + + /* Don't accidentally read from the current and parent directories= */ + if (strcmp(dirp->d_name, ".") =3D=3D 0 || strcmp(dirp->d_name, "..= ") =3D=3D 0) { + continue; + } + snprintf(buf, buf_len, "%s%s/clock-frequency", PROC_DEVTREE_CPU, dirp->d_name); f =3D fopen(buf, "r"); --=20 2.36.1