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SubjectRE: kernel panics with 4.14.X versions
> From: Jan Kara
> Sent: Thursday, April 19, 2018 13:23
> Good news guys, Robert has just spotted a bug which looks like what I'd
> expect can cause your lockups / crashes. I've merged his patch to my tree
> and will push it to Linus for -rc3 so eventually it should land in
> appropriate stable trees as well. If you are too eager to test it out, it
> is attached for you to try.
> Jan Kara

The patch's changelog says "... this behavior results in a kernel panic."
This sounds like a reference to corrupt memory causes a page fault or
general protection fault.

But what I saw is only a lockup rather than a kernel panic:
watchdog: BUG: soft lockup - CPU#10 stuck for 22s! [java:87260]"

So I guess what I saw can be a different unresolved issue?

-- Dexuan
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