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fix(net): guard network_cleanup() with TCP connection ownership token

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boreddevnl 2026-04-21 16:40:53 +02:00
parent 9988a6e420
commit 67f27a908f
1 changed files with 9 additions and 0 deletions
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9
src/net/network.c
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@ -24,6 +24,7 @@ static struct pbuf *tcp_recv_queue = NULL;
static int tcp_connect_done = 0;
static int tcp_connect_error = 0;
static int tcp_closed = 0;
static uint32_t tcp_owner_pid = 0;
static err_t tcp_recv_callback(void *arg, struct tcp_pcb *tpcb, struct pbuf *p, err_t err) {
(void)arg; (void)tpcb; (void)err;
@ -158,6 +159,10 @@ void network_force_unlock(void) {
}
void network_cleanup(void) {
extern uint32_t process_get_current_pid(void);
uint32_t my_pid = process_get_current_pid();
if (tcp_owner_pid != 0 && tcp_owner_pid != my_pid) return;
asm volatile("cli");
if (tcp_recv_queue) {
pbuf_free(tcp_recv_queue);
@ -167,6 +172,7 @@ void network_cleanup(void) {
tcp_abort(current_tcp_pcb);
current_tcp_pcb = NULL;
}
tcp_owner_pid = 0;
network_processing = 0;
asm volatile("sti");
}
@ -208,6 +214,9 @@ int network_tcp_connect(const ipv4_address_t *ip, uint16_t port) {
current_tcp_pcb = tcp_new();
if (!current_tcp_pcb) { network_processing = 0; return -1; }
extern uint32_t process_get_current_pid(void);
tcp_owner_pid = process_get_current_pid();
ip4_addr_t dest_addr;
IP4_ADDR(&dest_addr, ip->bytes[0], ip->bytes[1], ip->bytes[2], ip->bytes[3]);