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bpf: fix JSLT validation

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In function 'eval_jcc', judgment 'op == EBPF_JLT' occurs
twice, as a result, the corresponding second statement
cannot be accessed.

This patch fix this problem.

Fixes: 8021917293 ("bpf: add extra validation for input BPF program")
Cc: stable@dpdk.org

Signed-off-by: Hongbo Zheng <zhenghongbo3@huawei.com>
Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
This commit is contained in:
Hongbo Zheng 2021-04-22 15:30:01 +08:00 committed by Thomas Monjalon
parent 8e2dd74f0a
commit cdcee2ec9b
1 changed files with 1 additions and 1 deletions
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2
lib/bpf/bpf_validate.c
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@ -1115,7 +1115,7 @@ eval_jcc(struct bpf_verifier *bvf, const struct ebpf_insn *ins)
eval_jsgt_jsle(trd, trs, frd, frs);
else if (op == EBPF_JSLE)
eval_jsgt_jsle(frd, frs, trd, trs);
else if (op == EBPF_JLT)
else if (op == EBPF_JSLT)
eval_jslt_jsge(trd, trs, frd, frs);
else if (op == EBPF_JSGE)
eval_jslt_jsge(frd, frs, trd, trs);