From db5cc3917ca7d3e8f61a6a13b02fba3811c53efd Mon Sep 17 00:00:00 2001
From: Packit Service <user-cont-team+packit-service@redhat.com>
Date: Jan 06 2021 22:38:34 +0000
Subject: Apply patch glibc-rh1651283-7.patch


patch_name: glibc-rh1651283-7.patch
present_in_specfile: true
location_in_specfile: 81

---

diff --git a/malloc/malloc.c b/malloc/malloc.c
index 4412a4f..723d393 100644
--- a/malloc/malloc.c
+++ b/malloc/malloc.c
@@ -3876,10 +3876,14 @@ _int_malloc (mstate av, size_t bytes)
                         {
                           victim->fd_nextsize = fwd;
                           victim->bk_nextsize = fwd->bk_nextsize;
+                          if (__glibc_unlikely (fwd->bk_nextsize->fd_nextsize != fwd))
+                            malloc_printerr ("malloc(): largebin double linked list corrupted (nextsize)");
                           fwd->bk_nextsize = victim;
                           victim->bk_nextsize->fd_nextsize = victim;
                         }
                       bck = fwd->bk;
+                      if (bck->fd != fwd)
+                        malloc_printerr ("malloc(): largebin double linked list corrupted (bk)");
                     }
                 }
               else