On Fri, Nov 4, 2016 at 7:15 PM, Li Pengcheng wrote:
> If not return,data abort will happen
> when two threads call pstore_dump at the same time.
>
> Signed-off-by: Liu Hailong
> Signed-off-by: Li Pengcheng
> Signed-off-by: Li Zhong
> ---
> fs/pstore/platform.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c
> index 14984d9..60e6db6 100644
> --- a/fs/pstore/platform.c
> +++ b/fs/pstore/platform.c
> @@ -493,6 +493,7 @@ static void pstore_dump(struct kmsg_dumper *dumper,
> if (!is_locked) {
> pr_err("pstore dump routine blocked in %s path, may
> corrupt error record\n"
>, in_nmi() ? "NMI" : why);
> + return;
> }
> } else {
> spin_lock_irqsave(&psinfo->buf_lock, flags);
> --
> 1.9.1
Ah, thanks! I've queued this for -next.
-Kees
--
Kees Cook
Nexus Security
