From c1e26371c6fed7a18e7b6d06b0b182a2bafba969 Mon Sep 17 00:00:00 2001
From: Deomid Ryabkov <rojer@rojer.me>
Date: Thu, 14 Sep 2023 03:27:04 +0100
Subject: [PATCH] Fix a bug in ble_l2cap_sig_extract_expired

Next should be updated to point at the previous element in the list for removal to work correctly.
---
 nimble/host/src/ble_l2cap_sig.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/nimble/host/src/ble_l2cap_sig.c b/nimble/host/src/ble_l2cap_sig.c
index 42459179b..029e85538 100644
--- a/nimble/host/src/ble_l2cap_sig.c
+++ b/nimble/host/src/ble_l2cap_sig.c
@@ -1905,9 +1905,10 @@ ble_l2cap_sig_extract_expired(struct ble_l2cap_sig_proc_list *dst_list)
 
     ble_hs_lock();
 
-    prev = NULL;
+    next = NULL;
     proc = STAILQ_FIRST(&ble_l2cap_sig_procs);
     while (proc != NULL) {
+        prev = next;
         next = STAILQ_NEXT(proc, next);
 
         time_diff = proc->exp_os_ticks - now;