BUG/MEDIUM: mux-h2: fix missing test on sending_list in previous patch
Previous commit 989539b048 ("BUG/MINOR: mux-h2: use a safe
list_for_each_entry in h2_send()") accidently lost its sending_list test,
resulting in some elements to be woken up again while already in the
sending_list and h2_unsubscribe() crashing on integrity tests (only
when built with DEBUG_DEV).
If the fix above is backported this one must be as well.
diff --git a/src/mux_h2.c b/src/mux_h2.c
index c4572d5..abc7e7c 100644
--- a/src/mux_h2.c
+++ b/src/mux_h2.c
@@ -3262,6 +3262,10 @@
break;
h2s->flags &= ~H2_SF_BLK_ANY;
+
+ if (LIST_ADDED(&h2s->sending_list))
+ continue;
+
/* For some reason, the upper layer failed to subscribe again,
* so remove it from the send_list
*/