From: Li Qiang <liq3ea@xxxxxxx> commit 4a6f316d6855a434f56dbbeba05e14c01acde8f8 upstream. In aggregate kprobe case, when arm_kprobe failed, we need set the kp->flags with KPROBE_FLAG_DISABLED again. If not, the 'kp' kprobe will been considered as enabled but it actually not enabled. Link: https://lore.kernel.org/all/20220902155820.34755-1-liq3ea@xxxxxxx/ Fixes: 12310e343755 ("kprobes: Propagate error from arm_kprobe_ftrace()") Cc: stable@xxxxxxxxxxxxxxx Signed-off-by: Li Qiang <liq3ea@xxxxxxx> Acked-by: Masami Hiramatsu (Google) <mhiramat@xxxxxxxxxx> Signed-off-by: Masami Hiramatsu (Google) <mhiramat@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- kernel/kprobes.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) --- a/kernel/kprobes.c +++ b/kernel/kprobes.c @@ -2335,8 +2335,11 @@ int enable_kprobe(struct kprobe *kp) if (!kprobes_all_disarmed && kprobe_disabled(p)) { p->flags &= ~KPROBE_FLAG_DISABLED; ret = arm_kprobe(p); - if (ret) + if (ret) { p->flags |= KPROBE_FLAG_DISABLED; + if (p != kp) + kp->flags |= KPROBE_FLAG_DISABLED; + } } out: mutex_unlock(&kprobe_mutex);
