[PATCH v4 09/17] arm64: kprobes: fix kprobes without CONFIG_KRETPROBES

Sami Tolvanen
2019-11-01T22:14:51Z

This allows CONFIG_KRETPROBES to be disabled without disabling
kprobes entirely.

Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
---
arch/arm64/kernel/probes/kprobes.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/arch/arm64/kernel/probes/kprobes.c b/arch/arm64/kernel/probes/kprobes.c
index c4452827419b..98230ae979ca 100644
--- a/arch/arm64/kernel/probes/kprobes.c
+++ b/arch/arm64/kernel/probes/kprobes.c
@@ -551,6 +551,7 @@ void __kprobes __used *trampoline_probe_handler(struct pt_regs *regs)
return (void *)orig_ret_address;
}

+#ifdef CONFIG_KRETPROBES
void __kprobes arch_prepare_kretprobe(struct kretprobe_instance *ri,
struct pt_regs *regs)
{
@@ -564,6 +565,7 @@ int __kprobes arch_trampoline_kprobe(struct kprobe *p)
{
return 0;
}
+#endif

int __init arch_init_kprobes(void)
{
--
2.24.0.rc1.363.gb1bccd3e3d-goog