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Fix shell freeze #145

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Jan 5, 2024
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Fix shell freeze #145

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14 changes: 13 additions & 1 deletion wpa_supplicant/ctrl_iface_zephyr.c
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Original file line number Diff line number Diff line change
Expand Up @@ -126,8 +126,20 @@ static void wpa_supplicant_ctrl_iface_receive(int sock, void *eloop_ctx,
size_t reply_len = 0;

buf = os_zalloc(CTRL_IFACE_MAX_LEN + 1);
if (!buf)
if (!buf) {
/* Do a dummy read to drain the data from the socket */
static unsigned char dummy[512];

/* This is expected in OOM conditions, so, do not spam the log */
wpa_printf(MSG_DEBUG, "Failed to allocate memory for ctrl_iface receive buffer");

do {
res = recv(sock, dummy, sizeof(dummy),
MSG_TRUNC | MSG_DONTWAIT);
} while (res > 0);
return;
}

res = recv(sock, buf, CTRL_IFACE_MAX_LEN, 0);
if (res < 0) {
wpa_printf(MSG_ERROR, "recvfrom(ctrl_iface): %s",
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