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Subject: Re: [crash] PANIC: double fault, error_code: 0x0
To: Dave Hansen <dave.hansen@linux.intel.com>,
        Ingo Molnar <mingo@kernel.org>, linux-kernel@vger.kernel.org,
        Andy Lutomirski <luto@kernel.org>
References: <20171124172411.19476-1-mingo@kernel.org>
 <20171124202237.oytdkqq25s3ak2ul@gmail.com>
 <94d21124-6193-6bb3-3f81-e2005ab7e7d2@linux.intel.com>
Cc: Andy Lutomirski <luto@amacapital.net>,
        Thomas Gleixner <tglx@linutronix.de>,
        "H . Peter Anvin" <hpa@zytor.com>,
        Peter Zijlstra <peterz@infradead.org>, Borislav Petkov <bp@alien8.de>,
        Linus Torvalds <torvalds@linux-foundation.org>
From: Dave Hansen <dave.hansen@intel.com>
Message-ID: <78dc56cf-b821-b015-3f9b-bacdf1e59088@intel.com>
Date: Fri, 24 Nov 2017 20:15:31 -0800
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On 11/24/2017 08:09 PM, Dave Hansen wrote:
> Doesn't this stack trace mean we started C-code page fault handing on
> the sysenter stack?  Seems like we missed a switch to the process stack.
... and probably a KAISER switch to the kernel CR3.