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References: <20240321101058.68530-1-puranjay12@gmail.com>
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From: Alexei Starovoitov <alexei.starovoitov@gmail.com>
Date: Thu, 21 Mar 2024 04:05:15 -0700
Message-ID: <CAADnVQLhwLgq=QuXD-Ls=t9Scr_4Zn9JwdkXfZQfZkT=ysx64Q@mail.gmail.com>
Subject: Re: [PATCH bpf v2] bpf: verifier: prevent userspace memory access
To: Puranjay Mohan <puranjay12@gmail.com>, Ilya Leoshkevich <iii@linux.ibm.com>
Cc: "David S. Miller" <davem@davemloft.net>, David Ahern <dsahern@kernel.org>, 
	Alexei Starovoitov <ast@kernel.org>, Daniel Borkmann <daniel@iogearbox.net>, 
	Andrii Nakryiko <andrii@kernel.org>, Martin KaFai Lau <martin.lau@linux.dev>, 
	Eduard Zingerman <eddyz87@gmail.com>, Song Liu <song@kernel.org>, 
	Yonghong Song <yonghong.song@linux.dev>, John Fastabend <john.fastabend@gmail.com>, 
	KP Singh <kpsingh@kernel.org>, Stanislav Fomichev <sdf@google.com>, Hao Luo <haoluo@google.com>, 
	Jiri Olsa <jolsa@kernel.org>, Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@redhat.com>, 
	Borislav Petkov <bp@alien8.de>, Dave Hansen <dave.hansen@linux.intel.com>, X86 ML <x86@kernel.org>, 
	"H. Peter Anvin" <hpa@zytor.com>, Jean-Philippe Brucker <jean-philippe@linaro.org>, 
	Network Development <netdev@vger.kernel.org>, bpf <bpf@vger.kernel.org>, 
	LKML <linux-kernel@vger.kernel.org>
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On Thu, Mar 21, 2024 at 3:11=E2=80=AFAM Puranjay Mohan <puranjay12@gmail.co=
m> wrote:
>
> diff --git a/arch/s390/net/bpf_jit_comp.c b/arch/s390/net/bpf_jit_comp.c
> index e613eebfd349..e61a51a5b4be 100644
> --- a/arch/s390/net/bpf_jit_comp.c
> +++ b/arch/s390/net/bpf_jit_comp.c
> @@ -2691,3 +2691,8 @@ bool bpf_jit_supports_subprog_tailcalls(void)
>  {
>         return true;
>  }
> +
> +u64 bpf_arch_uaddress_limit(void)
> +{
> +       return -ENOTSUPP;
> +}

Looks good and should work, but s390 CI is still not happy.
Ideas?
sock tests were not failing before. So something is going on.