enable unwind (#2655)

[ti-chi-bot]

This is an automated cherry-pick of #2655

What problem does this PR solve?

enable unwind to get the whole stack when TiFlash crashed

Issue Number: close #2616

Problem Summary:

What is changed and how it works?

Proposal: xxx

What's Changed:

Related changes

• PR to update pingcap/docs/pingcap/docs-cn:
• Need to cherry-pick to the release branch:

Check List

Tests

• Unit test
• Integration test

Side effects

Release note

None

[ti-chi-bot]

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[Mini256]

/hold

This PR was generated during the process of reproducing the problem of picking failure. Please ignore the PR first. After determining the problem, I will let the robot cherrypick a new PR again.

[Mini256]

/close

[ti-chi-bot]

@Mini256: Closed this PR.

In response to this:

/close

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