From: Matt Fleming <matt@codeblueprint.co.uk>
To: kernel test robot <ying.huang@linux.intel.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>,
lkp@01.org, LKML <linux-kernel@vger.kernel.org>,
Andy Lutomirski <luto@amacapital.net>,
Ingo Molnar <mingo@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
"H. Peter Anvin" <hpa@zytor.com>, Borislav Petkov <bp@alien8.de>,
Laszlo Ersek <lersek@redhat.com>
Subject: Re: [lkp] [x86/setup] f5f3497cad: BUG: kernel boot crashed
Date: Mon, 2 Nov 2015 16:28:01 +0000 [thread overview]
Message-ID: <20151102162551.GB2331@codeblueprint.co.uk> (raw)
In-Reply-To: <87io5rpn1c.fsf@yhuang-dev.intel.com>
On Wed, 28 Oct, at 01:41:51PM, kernel test robot wrote:
> FYI, we noticed the below changes on
>
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> commit f5f3497cad8c8416a74b9aaceb127908755d020a ("x86/setup: Extend low identity map to cover whole kernel range")
>
>
> +------------------------------------------------+------------+------------+
> | | 8a53554e12 | f5f3497cad |
> +------------------------------------------------+------------+------------+
> | boot_successes | 19 | 10 |
> | boot_failures | 2 | 9 |
> | IP-Config:Auto-configuration_of_network_failed | 2 | 2 |
> | BUG:kernel_boot_crashed | 0 | 7 |
> +------------------------------------------------+------------+------------+
>
>
> [ 0.053410] smpboot: CPU0: GenuineIntel GenuineIntel QEMU Virtual CPU version 2.4.0QEMU Virtual CPU version 2.4.0 (family: 0x6, model: 0x6 (family: 0x6, model: 0x6, stepping: 0x3)
> , stepping: 0x3)
> [ 0.056666] Performance Events:
> [ 0.056666] Performance Events: no PMU driver, software events only.
> no PMU driver, software events only.
> [ 0.060520] CPU 1 irqstacks, hard=8a832000 soft=8a834000
> [ 0.060520] CPU 1 irqstacks, hard=8a832000 soft=8a834000
> [ 0.061605] x86: Booting SMP configuration:
> [ 0.061605] x86: Booting SMP configuration:
> [ 0.062445] .... node #0, CPUs:
> [ 0.062445] .... node #0, CPUs: #1 #1
> Elapsed time: 10
> BUG: kernel boot crashed
Yikes! Yeah, I can reproduce this. It appears the STARTUP IPI code is
triggering this crash in wakeup_secondary_cpu_via_init().
I'll take a look unless anyone else has any bright ideas?
next prev parent reply other threads:[~2015-11-02 16:28 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-28 5:41 [lkp] [x86/setup] f5f3497cad: BUG: kernel boot crashed kernel test robot
2015-11-02 16:28 ` Matt Fleming [this message]
2015-11-03 8:07 ` Ingo Molnar
2015-11-03 14:06 ` Matt Fleming
2015-11-04 10:51 ` [tip:x86/urgent] x86/setup: Fix recent boot crash on 32-bit SMP machines tip-bot for Matt Fleming
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