if I disable multithreading my system that had these crashes is stable
for months without them. e.g. run this in rc.local:
#!/bin/bash
#
# disables hyperthreading, which stops the system from crashing
#
for CPU in /sys/devices/system/cpu/cpu[0-9]*; do
CPUID=$(basename $CPU)
echo "CPU: $CPUID";
if test -e $CPU/online; then
echo "1" > $CPU/online;
fi;
COREID="$(cat $CPU/topology/core_id)";
eval "COREENABLE=\"\${core${COREID}enable}\"";
if ${COREENABLE:-true}; then
echo "${CPU} core=${CORE} -> enable"
eval "core${COREID}enable='false'";
else
echo "$CPU core=${CORE} -> disable";
echo "0" > "$CPU/online";
fi;
done;
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https://bugs.launchpad.net/bugs/1690085
Title:
Ryzen 1800X freeze - rcu_sched detected stalls on CPUs/tasks
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