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 <muri...@linux.ibm.com> Signed-off-by: Fabiano Rosas <faro...@linux.ibm.com> --- v2: - Skip current and parent directories. v1: https://lore.kernel.org/qemu-devel/20220711193743.51456-1-muri...@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] = '\0'; while ((dirp = readdir(dp)) != NULL) { FILE *f; + + /* Don't accidentally read from the current and parent directories */ + if (strcmp(dirp->d_name, ".") == 0 || strcmp(dirp->d_name, "..") == 0) { + continue; + } + snprintf(buf, buf_len, "%s%s/clock-frequency", PROC_DEVTREE_CPU, dirp->d_name); f = fopen(buf, "r"); -- 2.36.1
