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Diffstat (limited to 'arch/arm64/kernel/probes/kprobes.c')
-rw-r--r--arch/arm64/kernel/probes/kprobes.c12
1 files changed, 7 insertions, 5 deletions
diff --git a/arch/arm64/kernel/probes/kprobes.c b/arch/arm64/kernel/probes/kprobes.c
index 6dbcc89f6662..d9dfa82c1f18 100644
--- a/arch/arm64/kernel/probes/kprobes.c
+++ b/arch/arm64/kernel/probes/kprobes.c
@@ -7,6 +7,9 @@
* Copyright (C) 2013 Linaro Limited.
* Author: Sandeepa Prabhu <sandeepa.prabhu@linaro.org>
*/
+
+#define pr_fmt(fmt) "kprobes: " fmt
+
#include <linux/extable.h>
#include <linux/kasan.h>
#include <linux/kernel.h>
@@ -218,7 +221,7 @@ static int __kprobes reenter_kprobe(struct kprobe *p,
break;
case KPROBE_HIT_SS:
case KPROBE_REENTER:
- pr_warn("Unrecoverable kprobe detected.\n");
+ pr_warn("Failed to recover from reentered kprobes.\n");
dump_kprobe(p);
BUG();
break;
@@ -398,18 +401,17 @@ int __init arch_populate_kprobe_blacklist(void)
void __kprobes __used *trampoline_probe_handler(struct pt_regs *regs)
{
- return (void *)kretprobe_trampoline_handler(regs, &kretprobe_trampoline,
- (void *)kernel_stack_pointer(regs));
+ return (void *)kretprobe_trampoline_handler(regs, (void *)regs->regs[29]);
}
void __kprobes arch_prepare_kretprobe(struct kretprobe_instance *ri,
struct pt_regs *regs)
{
ri->ret_addr = (kprobe_opcode_t *)regs->regs[30];
- ri->fp = (void *)kernel_stack_pointer(regs);
+ ri->fp = (void *)regs->regs[29];
/* replace return addr (x30) with trampoline */
- regs->regs[30] = (long)&kretprobe_trampoline;
+ regs->regs[30] = (long)&__kretprobe_trampoline;
}
int __kprobes arch_trampoline_kprobe(struct kprobe *p)