有时soft lockup之后整台机器就没有响应了,在console不断有这些消息被打印出来:
[ 492.400124] watchdog: BUG: soft lockup - CPU#5 stuck for 22s!
但是并没有打印出stack,导致不知道在哪里stuck住了。注意到如果是panic的话stack就会在console被打印出来。所以如果要让soft lockup时在console打印stack,可以设置为在soft lockup时panic:
echo 1 > /proc/sys/kernel/softlockup_panic
参考:https://askubuntu.com/questions/725403/capturing-a-kernel-dump-from-a-cpu-soft-lockup-at-boot
标签:lockup,console,panic,打印,soft,stack From: https://www.cnblogs.com/searchstar/p/18437468