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bpf: Warn on non-preallocated case for BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE 

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 similar as we do in case of BPF_PROG_TYPE_RAW_TRACEPOINT.

Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20220713160936.57488-1-laoar.shao@gmail.com
This commit is contained in:
Yafang Shao 2022-07-13 16:09:36 +00:00 committed by Daniel Borkmann
parent ca2e1a6270
commit 5002615a37
1 changed files with 1 additions and 0 deletions
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kernel/bpf/verifier.c
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@ -12572,6 +12572,7 @@ static bool is_tracing_prog_type(enum bpf_prog_type type)
case BPF_PROG_TYPE_TRACEPOINT:
case BPF_PROG_TYPE_PERF_EVENT:
case BPF_PROG_TYPE_RAW_TRACEPOINT:
case BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE:
return true;
default:
return false;