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SubjectRe: [PATCH net v2] netrom: fix sleep in atomic context bugs in timer handlers
Hello,

On Wed, 27 Jul 2022 18:36:47 -0700 Jakub Kicinski wrote:

> On Tue, 26 Jul 2022 11:24:20 +0800 Duoming Zhou wrote:
> > nr_heartbeat_expiry
> > nr_write_internal
> > nr_transmit_buffer
>
> void nr_transmit_buffer(struct sock *sk, struct sk_buff *skb)
> {
> [...]
> if (!nr_route_frame(skb, NULL)) {
>
> > nr_route_frame
>
> int nr_route_frame(struct sk_buff *skb, ax25_cb *ax25)
> {
> [...]
> if (ax25 != NULL) {
> ret = nr_add_node(nr_src, "", &ax25->dest_addr, ax25->digipeat,
>
> ax25 must be NULL on this path AFAICT.
>
> > nr_add_node
> > kmemdup(..,GFP_KERNEL) //may sleep

Thank you for your time and suggestions, I understand.

Best regards,
Duoming Zhou
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