Commit a2310c74 authored by Liao Chang's avatar Liao Chang Committed by Guo Ren
Browse files

csky/kprobe: reclaim insn_slot on kprobe unregistration 



On kprobe registration kernel allocate one insn_slot for new kprobe,
but it forget to reclaim the insn_slot on unregistration, leading to a
potential leakage.

Reported-by: default avatarChen Guokai <chenguokai17@mails.ucas.ac.cn>
Reviewed-by: default avatarMasami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: default avatarLiao Chang <liaochang1@huawei.com>
Signed-off-by: default avatarGuo Ren <guoren@kernel.org>
parent ff699273

arch/csky/kernel/probes/kprobes.c

+4 −0
Original line number Diff line number Diff line
@@ -124,6 +124,10 @@ void __kprobes arch_disarm_kprobe(struct kprobe *p) 


void __kprobes arch_remove_kprobe(struct kprobe *p)

{

	if (p->ainsn.api.insn) {

		free_insn_slot(p->ainsn.api.insn, 0);

		p->ainsn.api.insn = NULL;

	}

}



static void __kprobes save_previous_kprobe(struct kprobe_ctlblk *kcb)