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From: "孙世龙 sunshilong" <sunshilong369@gmail.com>
To: LKML <linux-kernel@vger.kernel.org>
Subject: What methods or tools could be used to investigate the causes of hard or soft lockup?
Date: Sat, 11 Jul 2020 17:04:21 +0800	[thread overview]
Message-ID: <CAAvDm6buDWX1rMp9ncTw9=OQtXTYLPfXZSHg-2w5XEUxUNJEAA@mail.gmail.com> (raw)

Hi, list

I have frequently faced sort lockups and hard lockups.
Here are some example logs:
1. Watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [cantest:1669]
2. NMI watchdog: Watchdog detected hard LOCKUP on CPU 0

What methods or tools could be used to investigate the causes of hard
or soft lockups?
I have been stuck with such problems for a long time.
I would be grateful if somebody shed some light on this issue.

Any advice on how to proceed?

Thank you for your attention to this matter.
Best regards.

             reply	other threads:[~2020-07-11  9:05 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-11  9:04 孙世龙 sunshilong [this message]
  -- strict thread matches above, loose matches on Subject: below --
2020-07-11  9:02 What methods or tools could be used to investigate the causes of hard or soft lockup? 孙世龙 sunshilong

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