Commit 88afc239 authored by Borislav Petkov's avatar Borislav Petkov
Browse files

x86/uprobes: Convert to insn_decode() 



Simplify code, no functional changes.

Signed-off-by: default avatarBorislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20210304174237.31945-16-bp@alien8.de
parent 0be7f42d

arch/x86/kernel/uprobes.c

+4 −4
Original line number Diff line number Diff line
@@ -276,12 +276,12 @@ 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))