linux-kernel - Re: [PATCH bpf-next] bpf: fix build on architectures with special bpf_user_pt_regs

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Message-ID: <CAADnVQLsNcXUAYbWButG8PpxDh5uc=rC8KuyxovddfykMsUqYw@mail.gmail.com>
Date:   Sat, 25 Jul 2020 01:40:51 -0700
From:   Alexei Starovoitov <alexei.starovoitov@...il.com>
To:     Song Liu <songliubraving@...com>
Cc:     LKML <linux-kernel@...r.kernel.org>, bpf <bpf@...r.kernel.org>,
        Network Development <netdev@...r.kernel.org>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Kernel Team <kernel-team@...com>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...omium.org>,
        Jesper Dangaard Brouer <brouer@...hat.com>,
        kernel test robot <lkp@...el.com>
Subject: Re: [PATCH bpf-next] bpf: fix build on architectures with special bpf_user_pt_regs_t

On Fri, Jul 24, 2020 at 1:08 PM Song Liu <songliubraving@...com> wrote:
>
> Architectures like s390, powerpc, arm64, riscv have speical definition of
> bpf_user_pt_regs_t. So we need to cast the pointer before passing it to
> bpf_get_stack(). This is similar to bpf_get_stack_tp().
>
> Fixes: 03d42fd2d83f ("bpf: Separate bpf_get_[stack|stackid] for perf events BPF")
> Reported-by: kernel test robot <lkp@...el.com>
> Signed-off-by: Song Liu <songliubraving@...com>

Applied. Thanks