Comment 459 for bug 1690085

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In , xiyou.wangcong (xiyou.wangcong-linux-kernel-bugs) wrote :

Hey, guys

We have been seeing this smp function call soft lockup since 3.x kernel. Unfortunately we don't know how to reproduce it either.

I suspect there is something on other CPU (not shown without sysrq-l) blocking the smp call function execution, we have to figure out what it is. So next time you see a living case of this bug, please collect the stack traces on all the CPU's at that time, use sysrq-l.

Thanks!