fix: returning 0 for CPU frequency when unknown (#12323)

daemon/system-info.sh

@@ -196,13 +196,14 @@ if [ -n "${lscpu}" ] && lscpu > /dev/null 2>&1; then
   LCPU_COUNT="$(echo "${lscpu_output}" | grep "^CPU(s):" | cut -f 2 -d ':' | sed -e 's/^[[:space:]]*//' -e 's/[[:space:]]*$//')"
   CPU_VENDOR="$(echo "${lscpu_output}" | grep "^Vendor ID:" | cut -f 2 -d ':' | sed -e 's/^[[:space:]]*//' -e 's/[[:space:]]*$//')"
   CPU_MODEL="$(echo "${lscpu_output}" | grep "^Model name:" | cut -f 2 -d ':' | sed -e 's/^[[:space:]]*//' -e 's/[[:space:]]*$//')"
-  possible_cpu_freq="$(echo "${lscpu_output}" | grep -F "CPU max MHz:" | cut -f 2 -d ':' | sed -e 's/^[[:space:]]*//' -e 's/[[:space:]]*$//' | grep -o '^[0-9]*') MHz"
-  if [ "${possible_cpu_freq}" = " MHz" ]; then
-    possible_cpu_freq="$(echo "${lscpu_output}" | grep -F "CPU MHz:" | cut -f 2 -d ':' | sed -e 's/^[[:space:]]*//' -e 's/[[:space:]]*$//' | grep -o '^[0-9]*') MHz"
+  possible_cpu_freq="$(echo "${lscpu_output}" | grep -F "CPU max MHz:" | cut -f 2 -d ':' | sed -e 's/^[[:space:]]*//' -e 's/[[:space:]]*$//' | grep -o '^[0-9]*')"
+  if [ -z "$possible_cpu_freq" ]; then
+    possible_cpu_freq="$(echo "${lscpu_output}" | grep -F "CPU MHz:" | cut -f 2 -d ':' | sed -e 's/^[[:space:]]*//' -e 's/[[:space:]]*$//' | grep -o '^[0-9]*')"
   fi
-  if [ "${possible_cpu_freq}" = " MHz" ]; then
-    possible_cpu_freq="$(echo "${lscpu_output}" | grep "^Model name:" | grep -Eo "[0-9\.]+GHz" | grep -o "^[0-9\.]*" | awk '{print int($0*1000)}') MHz"
+  if [ -z "$possible_cpu_freq" ]; then
+    possible_cpu_freq="$(echo "${lscpu_output}" | grep "^Model name:" | grep -Eo "[0-9\.]+GHz" | grep -o "^[0-9\.]*" | awk '{print int($0*1000)}')"
   fi
+  [ -n "$possible_cpu_freq" ] && possible_cpu_freq="${possible_cpu_freq} MHz"
 elif [ -n "${dmidecode}" ] && dmidecode -t processor > /dev/null 2>&1; then
   dmidecode_output="$(${dmidecode} -t processor 2> /dev/null)"
   CPU_INFO_SOURCE="dmidecode"