Re: [PATCH bpf-next v3] bpf: Change value of MAX_TAIL_CALL_CNT from 32 to 33
From: Daniel Borkmann <daniel@iogearbox.net>
Date: 2021-11-01 15:45:01
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bpf, lkml
On 10/29/21 1:53 PM, Tiezhu Yang wrote: [...]
quoted hunk ↗ jump to hunk
diff --git a/kernel/bpf/core.c b/kernel/bpf/core.c index b6c72af..6d10292 100644 --- a/kernel/bpf/core.c +++ b/kernel/bpf/core.c@@ -1565,7 +1565,8 @@ static u64 ___bpf_prog_run(u64 *regs, const struct bpf_insn *insn) if (unlikely(index >= array->map.max_entries)) goto out; - if (unlikely(tail_call_cnt > MAX_TAIL_CALL_CNT)) + + if (unlikely(tail_call_cnt == MAX_TAIL_CALL_CNT)) goto out;
Why making it less robust by going with == rather than >= ?