linux-kernel - Re: [PATCH 35/40] lib: implement context capture support for tagged allocations

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Message-ID: <ZFIPmnrSIdJ5yusM@dhcp22.suse.cz>
Date:   Wed, 3 May 2023 09:39:06 +0200
From:   Michal Hocko <mhocko@...e.com>
To:     Suren Baghdasaryan <surenb@...gle.com>
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Subject: Re: [PATCH 35/40] lib: implement context capture support for tagged
 allocations

On Mon 01-05-23 09:54:45, Suren Baghdasaryan wrote:
[...]
> +struct codetag_ctx *alloc_tag_create_ctx(struct alloc_tag *tag, size_t size)
> +{
> +	struct alloc_call_ctx *ac_ctx;
> +
> +	/* TODO: use a dedicated kmem_cache */
> +	ac_ctx = kmalloc(sizeof(struct alloc_call_ctx), GFP_KERNEL);

You cannot really use GFP_KERNEL here. This is post_alloc_hook path and
that has its own gfp context.
-- 
Michal Hocko
SUSE Labs