lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:   Mon, 14 Sep 2020 22:36:47 -0700
From:   Martin KaFai Lau <>
To:     Lorenz Bauer <>
CC:     bpf <>, Alexei Starovoitov <>,
        Daniel Borkmann <>,
        Kernel Team <>,
        Networking <>, Yonghong Song <>
Subject: Re: [PATCH RFC bpf-next 2/2] bpf: Enable bpf_skc_to_* sock casting
 helper to networking prog type

On Mon, Sep 14, 2020 at 12:43:04PM -0700, Martin KaFai Lau wrote:
> For other ARG_PTR_TO_SOCK_COMMON helpers, they are not available to
> the tracing prog type.  Hence, they are fine to accept PTR_TO_BTF_ID
> as ARG_PTR_TO_SOCK_COMMON since the only way for non tracing prog to
> get a PTR_TO_BTF_ID is from casting helpers bpf_skc_to_* and
> the NULL check on return value must be done first.
After looking more, it may not work well.  For example, reading

Need to think a bit.  May try out another idea tomorrow or consider adding
the OR_NULL arg as you mentioned.

Powered by blists - more mailing lists