Here just skip the code(BPF_ST | BPF_NOSPEC) that has no couterpart to the loongarch.
To verify, use ltp testcase:
Without this patch:
$ ./bpf_prog02
... ...
bpf_common.c:123: TBROK: Failed verification: ??? (524)
Summary:
passed 0
failed 0
broken 1
skipped 0
warnings 0
With this patch:
$ ./bpf_prog02
... ...
Summary:
passed 0
failed 0
broken 0
skipped 0
warnings 0
Signed-off-by: George Guo <guodongtai@xxxxxxxxxx>
---
arch/loongarch/net/bpf_jit.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/arch/loongarch/net/bpf_jit.c b/arch/loongarch/net/bpf_jit.c
index 288003a9f0ca..745d344385ed 100644
--- a/arch/loongarch/net/bpf_jit.c
+++ b/arch/loongarch/net/bpf_jit.c
@@ -1046,6 +1046,11 @@ static int build_body(struct jit_ctx *ctx, bool extra_pass)
if (ctx->image == NULL)
ctx->offset[i] = ctx->idx;
+ /* skip the code that has no couterpart to the host arch */
+ if(insn->code == (BPF_ST | BPF_NOSPEC)) {
+ continue;
+ }
+
ret = build_insn(insn, ctx, extra_pass);
if (ret > 0) {
i++;
--
2.34.1
