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[Bug runtime/22155] kernel panic due to NULL vma_cache_p->f_path.dentry
- From: "penguin-kernel at i-love dot sakura dot ne dot jp" <sourceware-bugzilla at sourceware dot org>
- To: systemtap at sourceware dot org
- Date: Tue, 19 Sep 2017 20:12:53 +0000
- Subject: [Bug runtime/22155] kernel panic due to NULL vma_cache_p->f_path.dentry
- Auto-submitted: auto-generated
- References: <bug-22155-6586@http.sourceware.org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=22155
--- Comment #2 from Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp> ---
> But, when that function gets called, the task is stopped.
> So, hopefully the task->mm won't be changing while the task is stopped.
Java is a multi-threaded process.
Are all threads stopped when that function gets called?
> Can you show us the script that caused this panic?
I don't have the script right now (I need to ask permission for disclosure).
But the script hooks Java methods using java().class().method() and file opens.
Guru mode is not used.
> Is this panic intermittent or does it happen every time?
So far only once, while running stability test for 8 hours.
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