daemon: cgen: emit missing skb load in _bf_nf_gen_inline_get_skb

yaakov-stein · yaakov-stein · commit 7a3367891b7e · 2026-03-09T06:50:59.000-07:00
diff --git a/src/bpfilter/cgen/nf.c b/src/bpfilter/cgen/nf.c
@@ -147,6 +147,7 @@ static int _bf_nf_gen_inline_get_skb(struct bf_program *program, int reg)
     EMIT(program, BPF_LDX_MEM(BPF_DW, reg, BPF_REG_10, BF_PROG_CTX_OFF(arg)));
     if ((offset = bf_btf_get_field_off("bpf_nf_ctx", "skb")) < 0)
         return offset;
+    EMIT(program, BPF_LDX_MEM(BPF_DW, reg, reg, offset));
 
     return 0;
 }

Original file line number	Diff line number	Diff line change
`@@ -147,6 +147,7 @@ static int _bf_nf_gen_inline_get_skb(struct bf_program *program, int reg)`
`147`	`147`	`EMIT(program, BPF_LDX_MEM(BPF_DW, reg, BPF_REG_10, BF_PROG_CTX_OFF(arg)));`
`148`	`148`	`if ((offset = bf_btf_get_field_off("bpf_nf_ctx", "skb")) < 0)`
`149`	`149`	`return offset;`
	`150`	`+ EMIT(program, BPF_LDX_MEM(BPF_DW, reg, reg, offset));`
`150`	`151`
`151`	`152`	`return 0;`
`152`	`153`	`}`