netdev - Re: [PATCH bpf] bpftool: Don't crash on missing xlated program instructions

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Message-ID: <39e47207-efdb-51ba-f671-9d04c368cc39@iogearbox.net>
Date:   Fri, 7 Feb 2020 22:50:41 +0100
From:   Daniel Borkmann <daniel@...earbox.net>
To:     Toke Høiland-Jørgensen <toke@...hat.com>,
        ast@...com
Cc:     bpf@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH bpf] bpftool: Don't crash on missing xlated program
 instructions

On 2/6/20 11:29 AM, Toke Høiland-Jørgensen wrote:
> Turns out the xlated program instructions can also be missing if
> kptr_restrict sysctl is set. This means that the previous fix to check the
> jited_prog_insns pointer was insufficient; add another check of the
> xlated_prog_insns pointer as well.
> 
> Fixes: 5b79bcdf0362 ("bpftool: Don't crash on missing jited insns or ksyms")
> Fixes: cae73f233923 ("bpftool: use bpf_program__get_prog_info_linear() in prog.c:do_dump()")
> Signed-off-by: Toke Høiland-Jørgensen <toke@...hat.com>

Applied, thanks!