linux-kernel - Re: [BUG REPORT] x86/apic: CPU Hang in x86 VM During Kdump

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <9dfd8510-91e5-40c4-a3ec-6f70667fc366@huawei.com>
Date: Mon, 11 Aug 2025 20:51:37 +0800
From: Yipeng Zou <zouyipeng@...wei.com>
To: Thomas Gleixner <tglx@...utronix.de>, <mingo@...hat.com>, <bp@...en8.de>,
	<dave.hansen@...ux.intel.com>, <x86@...nel.org>, <hpa@...or.com>,
	<peterz@...radead.org>, <sohil.mehta@...el.com>, <rui.zhang@...el.com>,
	<arnd@...db.de>, <yuntao.wang@...ux.dev>, <linux-kernel@...r.kernel.org>
Subject: Re: [BUG REPORT] x86/apic: CPU Hang in x86 VM During Kdump


在 2025/7/30 3:48, Thomas Gleixner 写道:
> On Tue, Jul 29 2025 at 21:35, Yipeng Zou wrote:
>> 在 2025/7/29 16:53, Thomas Gleixner 写道:
>>> On Sun, Jul 27 2025 at 22:01, Thomas Gleixner wrote:
>>> So the patch I gave you should handle the reboot vector pending in IRR
>>> gracefully. Can you please give it a try?
>> Hi Thomas:
>>
>>       Thanks for your time!
>>
>>       Indeed, It invokes kdump_nmi_shootdown_cpus() and uses the NMI
>> shutdown.
>>
>>       I started the test run today, but this is a low-probability to hit
>> this path, might take a while.
> It's trivial enough to enforce that, no?

Hi Thomas:

     Sorry for delay - after resolving a few environmental issues, 
anyway, it works.

     All previously failed test cases are now passing.

     I also think this solution is reasonable.

-- 
Regards,
Yipeng Zou