diff --git a/supervisor/shared/web_workflow/websocket.c b/supervisor/shared/web_workflow/websocket.c
index 7612066fa614f..e55e09b3e77e6 100644
--- a/supervisor/shared/web_workflow/websocket.c
+++ b/supervisor/shared/web_workflow/websocket.c
@@ -52,6 +52,8 @@ typedef struct {
// interrupt character.
STATIC ringbuf_t _incoming_ringbuf;
STATIC uint8_t _buf[16];
+// make sure background is not called recursively
+STATIC bool in_web_background = false;
static _websocket cp_serial;
@@ -244,6 +246,10 @@ void websocket_background(void) {
if (!websocket_connected()) {
return;
}
+ if (in_web_background) {
+ return;
+ }
+ in_web_background = true;
uint8_t c;
while (ringbuf_num_empty(&_incoming_ringbuf) > 0 &&
_read_next_payload_byte(&c)) {
@@ -253,4 +259,5 @@ void websocket_background(void) {
}
ringbuf_put(&_incoming_ringbuf, c);
}
+ in_web_background = false;
}
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