netdev - Re: [lkp-robot] [bpf] de05014aba: BUG:sleeping_function_called_from_invalid_context_at

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Message-Id: <20170515.145725.74958807751910010.davem@davemloft.net>
Date:   Mon, 15 May 2017 14:57:25 -0400 (EDT)
From:   David Miller <davem@...emloft.net>
To:     xiaolong.ye@...el.com
Cc:     kafai@...com, netdev@...r.kernel.org, daniel@...earbox.net,
        hannes@...essinduktion.org, ast@...com, kernel-team@...com,
        lkp@...org
Subject: Re: [lkp-robot] [bpf] de05014aba:
 BUG:sleeping_function_called_from_invalid_context_at_mm/slab.h

From: kernel test robot <xiaolong.ye@...el.com>
Date: Mon, 15 May 2017 16:14:38 +0800

> commit: de05014aba8054e1353b720b814a0cd8ea7594e5 ("bpf: Introduce bpf_prog ID")
> url: https://github.com/0day-ci/linux/commits/Martin-KaFai-Lau/bpf-Introduce-bpf_prog-ID/20170428-025859

Indeed, we can't use GFP_USER in the call to idr_alloc_cyclic() if it is
going to run with the prog_idr_lock spinlock held.