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Subject: Re: [PATCH bpf-next v4 1/2] bpf: extend stackmap to save
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To: Song Liu <songliubraving@fb.com>, <netdev@vger.kernel.org>,
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On 3/12/18 1:39 PM, Song Liu wrote:
> +	page = find_get_page(vma->vm_file->f_mapping, 0);

did you test it with config_debug_atomic_sleep ?
it should have complained...