netdev - Re: [BUG] bpf: oops in kfree

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Message-ID: <CAADnVQKA_P2zXDQ=MDL_B14jBTJ6CfVcDomgY6WibZHrQOgoFg@mail.gmail.com>
Date:   Wed, 30 Oct 2019 11:42:20 -0700
From:   Alexei Starovoitov <alexei.starovoitov@...il.com>
To:     Jiri Olsa <jolsa@...hat.com>
Cc:     Alexei Starovoitov <ast@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Daniel Borkmann <daniel@...earbox.net>,
        X86 ML <x86@...nel.org>,
        Network Development <netdev@...r.kernel.org>,
        bpf <bpf@...r.kernel.org>, Kernel Team <kernel-team@...com>
Subject: Re: [BUG] bpf: oops in kfree_skb test

On Wed, Oct 30, 2019 at 10:57 AM Jiri Olsa <jolsa@...hat.com> wrote:
>
> it's jited and I'm just running test_progs
> the kerne is latest bpf-next, config is attached

Reproduced it.
I missed the case where jit is on, but bpf_jit_kallsyms is off.
Please use sysctl net.core.bpf_jit_kallsyms=1 as a workaround.
I'll send a fix shortly.