[RFC PATCH v0 13/19] x86/uprobes: Convert to insn_decode()

[Borislav Petkov]

From: Borislav Petkov <bp@xxxxxxx>

Simplify code, no functional changes.

Signed-off-by: Borislav Petkov <bp@xxxxxxx>
---
 arch/x86/kernel/uprobes.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/x86/kernel/uprobes.c b/arch/x86/kernel/uprobes.c
index 3fdaa042823d..e5759310f499 100644
--- a/arch/x86/kernel/uprobes.c
+++ b/arch/x86/kernel/uprobes.c
@@ -275,12 +275,12 @@ static bool is_prefix_bad(struct insn *insn)
 
 static int uprobe_init_insn(struct arch_uprobe *auprobe, struct insn *insn, bool x86_64)
 {
+	enum insn_mode m = x86_64 ? INSN_MODE_64 : INSN_MODE_32;
 	u32 volatile *good_insns;
+	int ret;
 
-	insn_init(insn, auprobe->insn, sizeof(auprobe->insn), x86_64);
-	/* has the side-effect of processing the entire instruction */
-	insn_get_length(insn);
-	if (!insn_complete(insn))
+	ret = insn_decode(insn, auprobe->insn, sizeof(auprobe->insn), m);
+	if (ret < 0)
 		return -ENOEXEC;
 
 	if (is_prefix_bad(insn))
-- 
2.21.0