Fix to check double free of insn_slot at arch_remove_kprobe as other arches do.
Signed-off-by: Masami Hiramatsu <[email protected]> Cc: Ralf Baechle <[email protected]> Cc: David Daney <[email protected]> Cc: Maneesh Soni <[email protected]> Cc: Victor Kamensky <[email protected]> Cc: [email protected] --- arch/mips/kernel/kprobes.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/arch/mips/kernel/kprobes.c b/arch/mips/kernel/kprobes.c index 12bc4eb..1f8187a 100644 --- a/arch/mips/kernel/kprobes.c +++ b/arch/mips/kernel/kprobes.c @@ -207,7 +207,10 @@ void __kprobes arch_disarm_kprobe(struct kprobe *p) void __kprobes arch_remove_kprobe(struct kprobe *p) { - free_insn_slot(p->ainsn.insn, 0); + if (p->ainsn.insn) { + free_insn_slot(p->ainsn.insn, 0); + p->ainsn.insn = NULL; + } } static void save_previous_kprobe(struct kprobe_ctlblk *kcb) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
