linux-hardening - Re: [PATCH] ARM: unwind: improve unwinders for noreturn case

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Date: Wed, 20 Mar 2024 11:46:31 +0800
From: Jiangfeng Xiao <xiaojiangfeng@...wei.com>
To: Matthew Wilcox <willy@...radead.org>
CC: Kees Cook <keescook@...omium.org>, <linux@...linux.org.uk>,
	<arnd@...db.de>, <rmk+kernel@...linux.org.uk>, <haibo.li@...iatek.com>,
	<angelogioacchino.delregno@...labora.com>, <amergnat@...libre.com>,
	<akpm@...ux-foundation.org>, <dave.hansen@...ux.intel.com>,
	<douzhaolei@...wei.com>, <gustavoars@...nel.org>, <jpoimboe@...nel.org>,
	<kepler.chenxin@...wei.com>, <kirill.shutemov@...ux.intel.com>,
	<linux-hardening@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-mm@...ck.org>, <linux-arm-kernel@...ts.infradead.org>,
	<nixiaoming@...wei.com>, <peterz@...radead.org>, <wangbing6@...wei.com>,
	<wangfangpeng1@...wei.com>, <jannh@...gle.com>, <David.Laight@...lab.com>
Subject: Re: [PATCH] ARM: unwind: improve unwinders for noreturn case



On 2024/3/20 11:34, Matthew Wilcox wrote:
> On Wed, Mar 20, 2024 at 11:30:13AM +0800, Jiangfeng Xiao wrote:
>> The checkpatch.pl script reports the "WARNING: printk() should
>> include KERN_<LEVEL> facility level" warning.
>>
>> That's why I changed printk to pr_warn.
>> I should change printk to printk(KERN_DEFAULT).
> 
> No, you should ignore checkpatch.  For bonus points, figure out why you
> should ignore it specifically in this case.
> .
> 

Thank you. I think I understand.

The checkpatch.pl file is a false report
because the 'loglvl' already exists.

I'd better keep printk(" %s...", loglvl, ...) still.