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Message-ID: <f83aca33-3a5f-97ac-625e-aa7c72bf60ba@infradead.org>
Date:   Sat, 12 Nov 2022 09:21:34 -0800
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Subject: Re: include: linux: slab: kmalloc_trace undefined when compiling
 drivers
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To:     Ian Cowan <ian@linux.cowan.aero>, cl@linux.com
Cc:     penberg@kernel.org, rientjes@google.com, iamjoonsoo.kim@lge.com,
        roman.gushchin@linux.dev, 42.hyeyoo@gmail.com, linux-mm@kvack.org,
        linux-kernel@vger.kernel.org
References: <Y2/Luovqgz8O+Kqa@rhino>
From:   Randy Dunlap <rdunlap@infradead.org>
In-Reply-To: <Y2/Luovqgz8O+Kqa@rhino>
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Hi--

On 11/12/22 08:37, Ian Cowan wrote:
> When compiling drivers (speficially drivers/pci/hotplug), I am receiving
> the following modpost error for both `kmalloc_trace` and
> `kmalloc_node_trace` on the staging/staging-next branch:
> 
> ERROR: modpost: "kmalloc_trace" [drivers/pci/hotplug/acpiphp_ibm.ko] undefined!
> 
> This only occurs when I have 'CONFIG_TRACING=y' in my config, and I
> have traced it down to the slab header where the kmalloc_trace is
> defined. It appears that when CONFIG_TRACING is set, the kmalloc_trace
> and kmalloc_node_trace do not get defined by the compiler. I do not have
> enough context in this area of the code base to propose a fix or to even
> know if maybe it's a local compiling issue for myself. It looks like
> there are a few recent commits from August that did some refactoring in this header,
> and when compiling prior to that refactoring I am able to compile the
> specified drivers without error.
> 
> I will mention that I am using Red Hat gcc version 12.2.1 and make version
> 4.3 and am on Fedora.

Please post a full failing kernel .config file for this.
Thanks.

-- 
~Randy