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pay: Use safe list traversal when completing suspended payments

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When traversing the list we call `command_finished` which modifies the
list we are traversing. This ensures we don't end up advancing in the
list iteration.

Reported-by: Rusty Russell <@rustyrussell>
This commit is contained in:
Christian Decker 2022-08-03 16:56:55 +02:00 • committed by neil saitug
parent 65a449e2c3
commit da0b651803
1 changed files with 4 additions and 4 deletions
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8
plugins/pay.c
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@ -574,7 +574,7 @@ static const char *init(struct plugin *p,
static void on_payment_success(struct payment *payment)
{
struct payment *p;
struct payment *p, *nxt;
struct payment_tree_result result = payment_collect_result(payment);
struct json_stream *ret;
struct command *cmd;
@ -585,7 +585,7 @@ static void on_payment_success(struct payment *payment)
/* Iterate through any pending payments we suspended and
* terminate them. */
list_for_each(&payments, p, list) {
list_for_each_safe(&payments, p, nxt, list) {
/* The result for the active payment is returned in
* `payment_finished`. */
if (payment == p)
@ -672,9 +672,9 @@ static void payment_json_add_attempts(struct json_stream *s,
static void on_payment_failure(struct payment *payment)
{
struct payment *p;
struct payment *p, *nxt;
struct payment_tree_result result = payment_collect_result(payment);
list_for_each(&payments, p, list)
list_for_each_safe(&payments, p, nxt, list)
{
struct json_stream *ret;
struct command *cmd;