Merge remote-tracking branch 'regulator/topic/palmas' into v3.9-rc8

[mirror_ubuntu-hirsute-kernel.git] / arch / x86 / kernel / kprobes / core.c

diff --git a/arch/x86/kernel/kprobes/core.c b/arch/x86/kernel/kprobes/core.c
index 3f06e61499814ee368ddcf6ec41a690cdfbea3c5..7bfe318d3d8a4a50b07bd8c02865c9f4af3496d7 100644 (file)
--- a/arch/x86/kernel/kprobes/core.c
+++ b/arch/x86/kernel/kprobes/core.c
@@ -375,6 +375,9 @@ static void __kprobes arch_copy_kprobe(struct kprobe *p)
        else
                p->ainsn.boostable = -1;
 
+       /* Check whether the instruction modifies Interrupt Flag or not */
+       p->ainsn.if_modifier = is_IF_modifier(p->ainsn.insn);
+
        /* Also, displacement change doesn't affect the first byte */
        p->opcode = p->ainsn.insn[0];
 }
@@ -434,7 +437,7 @@ static void __kprobes set_current_kprobe(struct kprobe *p, struct pt_regs *regs,
        __this_cpu_write(current_kprobe, p);
        kcb->kprobe_saved_flags = kcb->kprobe_old_flags
                = (regs->flags & (X86_EFLAGS_TF | X86_EFLAGS_IF));
-       if (is_IF_modifier(p->ainsn.insn))
+       if (p->ainsn.if_modifier)
                kcb->kprobe_saved_flags &= ~X86_EFLAGS_IF;
 }