From mboxrd@z Thu Jan  1 00:00:00 1970
From: Martin KaFai Lau <kafai@fb.com>
Subject: Re: [PATCH bpf-next] selftests/bpf: fix a typo in map in map test
Date: Thu, 2 Aug 2018 16:23:20 -0700
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Cc: <netdev@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
        <kernel-team@fb.com>, Arthur Fabre <afabre@cloudflare.com>,
        Daniel Borkmann <daniel@iogearbox.net>,
        Alexei Starovoitov <ast@kernel.org>
To: Roman Gushchin <guro@fb.com>
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On Thu, Aug 02, 2018 at 03:47:10PM -0700, Roman Gushchin wrote:
> Commit fbeb1603bf4e ("bpf: verifier: MOV64 don't mark dst reg unbounded")
> revealed a typo in commit fb30d4b71214 ("bpf: Add tests for map-in-map"):
> BPF_MOV64_REG(BPF_REG_0, 0) was used instead of
> BPF_MOV64_IMM(BPF_REG_0, 0).
> 
> I've noticed the problem by running bpf kselftests.
Thanks for the fix!

FWIW, here is the verifier log:
11: (85) call bpf_map_lookup_elem#1
12: (bf) r0 = r0
13: (95) exit
R0 leaks addr as return value

Acked-by: Martin KaFai Lau <kafai@fb.com>