Re: [PATCH bpf-next v4] bpf: Warn on non-preallocated case for BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE

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Subject: Re: [PATCH bpf-next v4] bpf: Warn on non-preallocated case for BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE
From: Yonghong Song <yhs@xxxxxx>
Date: Wed, 13 Jul 2022 12:52:35 -0700
Cc: netdev@xxxxxxxxxxxxxxx, bpf@xxxxxxxxxxxxxxx
In-reply-to: <20220713160936.57488-1-laoar.shao@gmail.com>
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:91.0) Gecko/20100101 Thunderbird/91.11.0



On 7/13/22 9:09 AM, Yafang Shao wrote:

BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE is also tracing type, which may
cause unexpected memory allocation if we set BPF_F_NO_PREALLOC.
Let's also warn on it.

Signed-off-by: Yafang Shao <laoar.shao@xxxxxxxxx>


Acked-by: Yonghong Song <yhs@xxxxxx>

References:
- [PATCH bpf-next v4] bpf: Warn on non-preallocated case for BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE
  - From: Yafang Shao

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