[PATCH v8 1/2] kprobes: copy ainsn after alloc aggr kprobe
From: Wang Nan <hidden>
Date: 2014-11-18 06:35:55
Also in:
lkml
Subsystem:
kprobes, the rest · Maintainers:
Naveen N Rao, "David S. Miller", Masami Hiramatsu, Linus Torvalds
Copy old kprobe to newly alloced optimized_kprobe before arch_prepare_optimized_kprobe(). Original kprove can brings more information to optimizer. v1 -> v2: - Bugfix: copy p->addr when alloc_aggr_kprobe. Signed-off-by: Wang Nan <redacted> --- kernel/kprobes.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/kernel/kprobes.c b/kernel/kprobes.c
index 3995f54..e9868ec 100644
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c@@ -730,7 +730,13 @@ static struct kprobe *alloc_aggr_kprobe(struct kprobe *p) return NULL; INIT_LIST_HEAD(&op->list); + + /* + * copy gives arch_prepare_optimized_kprobe + * more information + */ op->kp.addr = p->addr; + copy_kprobe(p, &op->kp); arch_prepare_optimized_kprobe(op); return &op->kp;
--
1.8.4