From: Xi Ruoyao <xry111@mengyan1223.wang>
To: Huacai Chen <chenhuacai@gmail.com>
Cc: Huacai Chen <chenhuacai@loongson.cn>,
Arnd Bergmann <arnd@arndb.de>, Andy Lutomirski <luto@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Peter Zijlstra <peterz@infradead.org>,
Andrew Morton <akpm@linux-foundation.org>,
David Airlie <airlied@linux.ie>, Jonathan Corbet <corbet@lwn.net>,
Linus Torvalds <torvalds@linux-foundation.org>,
linux-arch <linux-arch@vger.kernel.org>,
"open list:DOCUMENTATION" <linux-doc@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
Xuefeng Li <lixuefeng@loongson.cn>,
Yanteng Si <siyanteng@loongson.cn>,
Jiaxun Yang <jiaxun.yang@flygoat.com>
Subject: Re: [PATCH V5 00/22] arch: Add basic LoongArch support
Date: Thu, 06 Jan 2022 01:21:46 +0800 [thread overview]
Message-ID: <211edcb700db30c4a6b37db87139e5fa47aeece0.camel@mengyan1223.wang> (raw)
In-Reply-To: <6d0169ca8c9e417308d3b9f96cd0ef446ee36fe7.camel@mengyan1223.wang>
On Wed, 2022-01-05 at 19:51 +0800, Xi Ruoyao wrote:
> On Wed, 2022-01-05 at 17:40 +0800, Huacai Chen wrote:
> > Hi, Ruoyao,
> >
> > The problem still exists in 5.16-rc8, can you try to change
> > cpu_relax() definition to smp_mb()? It seems can fix the problem.
>
> Is there any workload which can triggers the panic? I can't trigger it
> by building and testing GCC, or building the kernel anymore.
>
> And is your "stable" issue the same one I'd encountered? To me changing
> barrier() to smp_mb() may fix some deadlock, but not a panic. (I'm not
> an expert on CPU architecture or kernel programming, so maybe I'm wrong
> here.)
>
> I'll put my 3A5000 machine into a loop building kernel and see if I can
> trigger the panic again...
I can't reproduce the issue on 5.16-rc8. But I can reproduce it on
5.16-rc5 and the s/barrier/smp_mb/ change fixes the issue.
I'm still puzzled: if there some workload which can reproduce the issue
more deterministic?
--
Xi Ruoyao <xry111@mengyan1223.wang>
School of Aerospace Science and Technology, Xidian University
prev parent reply other threads:[~2022-01-05 17:21 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-13 6:36 [PATCH V5 00/22] arch: Add basic LoongArch support Huacai Chen
2021-10-13 6:36 ` [PATCH V5 01/22] Documentation: LoongArch: Add basic documentations Huacai Chen
2021-10-13 6:36 ` [PATCH V5 02/22] Documentation/zh_CN: Add basic LoongArch documentations Huacai Chen
2021-10-13 6:36 ` [PATCH V5 03/22] LoongArch: Add elf-related definitions Huacai Chen
2021-10-13 6:36 ` [PATCH V5 04/22] LoongArch: Add writecombine support for drm Huacai Chen
2021-10-13 6:36 ` [PATCH V5 05/22] LoongArch: Add build infrastructure Huacai Chen
2021-10-13 6:36 ` [PATCH V5 06/22] LoongArch: Add CPU definition headers Huacai Chen
2021-10-13 6:36 ` [PATCH V5 07/22] LoongArch: Add atomic/locking headers Huacai Chen
2021-10-13 6:36 ` [PATCH V5 08/22] LoongArch: Add other common headers Huacai Chen
2021-10-13 6:36 ` [PATCH V5 09/22] LoongArch: Add boot and setup routines Huacai Chen
2021-10-13 6:36 ` [PATCH V5 10/22] LoongArch: Add exception/interrupt handling Huacai Chen
2021-10-13 6:36 ` [PATCH V5 11/22] LoongArch: Add process management Huacai Chen
2021-10-13 6:36 ` [PATCH V5 12/22] LoongArch: Add memory management Huacai Chen
2021-10-13 6:36 ` [PATCH V5 13/22] LoongArch: Add system call support Huacai Chen
2021-10-13 7:11 ` [PATCH V5 14/22] LoongArch: Add signal handling support Huacai Chen
2021-10-13 7:11 ` [PATCH V5 15/22] LoongArch: Add elf and module support Huacai Chen
2021-10-13 12:56 ` Luis Chamberlain
2021-10-14 3:01 ` Huacai Chen
2021-10-13 7:11 ` [PATCH V5 16/22] LoongArch: Add misc common routines Huacai Chen
2021-10-13 7:11 ` [PATCH V5 17/22] LoongArch: Add some library functions Huacai Chen
2021-10-13 7:11 ` [PATCH V5 18/22] LoongArch: Add PCI controller support Huacai Chen
2021-10-13 7:11 ` [PATCH V5 19/22] LoongArch: Add VDSO and VSYSCALL support Huacai Chen
2021-10-13 7:11 ` [PATCH V5 20/22] LoongArch: Add multi-processor (SMP) support Huacai Chen
2021-10-13 7:11 ` [PATCH V5 21/22] LoongArch: Add Non-Uniform Memory Access (NUMA) support Huacai Chen
2021-10-13 7:11 ` [PATCH V5 22/22] LoongArch: Add Loongson-3 default config file Huacai Chen
[not found] ` <722477bcc461238f96c3b038b2e3379ee49efdac.camel@mengyan1223.wang>
2021-12-21 7:53 ` [PATCH V5 00/22] arch: Add basic LoongArch support Huacai Chen
2021-12-28 8:34 ` Xi Ruoyao
2022-01-05 9:40 ` Huacai Chen
2022-01-05 11:51 ` Xi Ruoyao
2022-01-05 17:21 ` Xi Ruoyao [this message]
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