diff --git a/kernel/kprobes.c b/kernel/kprobes.c index 81259eecc4edc00be8662c2e90546e0ed59ede9b..f6e6edaf964c192e0ab46584be8f927378d78945 100644 --- a/kernel/kprobes.c +++ b/kernel/kprobes.c @@ -1501,13 +1501,16 @@ static struct kprobe *__get_valid_kprobe(struct kprobe *p) return ap; } -/* Return error if the kprobe is being re-registered */ -static inline int check_kprobe_rereg(struct kprobe *p) +/* + * Warn and return error if the kprobe is being re-registered since + * there must be a software bug. + */ +static inline int warn_kprobe_rereg(struct kprobe *p) { int ret = 0; mutex_lock(&kprobe_mutex); - if (__get_valid_kprobe(p)) + if (WARN_ON_ONCE(__get_valid_kprobe(p))) ret = -EINVAL; mutex_unlock(&kprobe_mutex); @@ -1595,7 +1598,7 @@ int register_kprobe(struct kprobe *p) return PTR_ERR(addr); p->addr = addr; - ret = check_kprobe_rereg(p); + ret = warn_kprobe_rereg(p); if (ret) return ret; @@ -1943,7 +1946,7 @@ int register_kretprobe(struct kretprobe *rp) return ret; /* If only rp->kp.addr is specified, check reregistering kprobes */ - if (rp->kp.addr && check_kprobe_rereg(&rp->kp)) + if (rp->kp.addr && warn_kprobe_rereg(&rp->kp)) return -EINVAL; if (kretprobe_blacklist_size) {