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Message-ID: <20180116083739.irw62va5kpc62cvr@gmail.com>
Date:   Tue, 16 Jan 2018 09:37:39 +0100
From:   Ingo Molnar <mingo@...nel.org>
To:     Dave Hansen <dave.hansen@...ux.intel.com>
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Tetsuo Handa <penguin-kernel@...ove.sakura.ne.jp>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-mm <linux-mm@...ck.org>,
        the arch/x86 maintainers <x86@...nel.org>,
        linux-fsdevel <linux-fsdevel@...r.kernel.org>,
        Michal Hocko <mhocko@...nel.org>
Subject: Re: [mm 4.15-rc8] Random oopses under memory pressure.


* Dave Hansen <dave.hansen@...ux.intel.com> wrote:

> Did anyone else notice the
> 
> 	[   31.068198]  ? vmalloc_sync_all+0x150/0x150
> 
> present in a bunch of the stack traces?  That should be pretty uncommon.

I thikn that's pretty unusual:

>  Is it just part of the normal do_page_fault() stack and the stack
> dumper picks up on it?

No, it should only be called by register_die_notifier(), which is not part of the 
regular stack dump, AFAICS.

Thanks,

	Ingo

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