diff --git a/include/linux/mmdebug.h b/include/linux/mmdebug.h
index d7cb1e5ecbda..a0a3894900ed 100644
--- a/include/linux/mmdebug.h
+++ b/include/linux/mmdebug.h
@@ -9,10 +9,12 @@ struct page;
 struct vm_area_struct;
 struct mm_struct;
 struct vma_iterator;
+struct vma_merge_struct;
 
 void dump_page(const struct page *page, const char *reason);
 void dump_vma(const struct vm_area_struct *vma);
 void dump_mm(const struct mm_struct *mm);
+void dump_vmg(const struct vma_merge_struct *vmg, const char *reason);
 void vma_iter_dump_tree(const struct vma_iterator *vmi);
 
 #ifdef CONFIG_DEBUG_VM
@@ -87,6 +89,15 @@ void vma_iter_dump_tree(const struct vma_iterator *vmi);
 	}								\
 	unlikely(__ret_warn_once);					\
 })
+#define VM_WARN_ON_VMG(cond, vmg)		({			\
+	int __ret_warn = !!(cond);					\
+									\
+	if (unlikely(__ret_warn)) {					\
+		dump_vmg(vmg, "VM_WARN_ON_VMG(" __stringify(cond)")");	\
+		WARN_ON(1);						\
+	}								\
+	unlikely(__ret_warn);						\
+})
 
 #define VM_WARN_ON(cond) (void)WARN_ON(cond)
 #define VM_WARN_ON_ONCE(cond) (void)WARN_ON_ONCE(cond)
@@ -104,9 +115,10 @@ void vma_iter_dump_tree(const struct vma_iterator *vmi);
 #define VM_WARN_ON_FOLIO(cond, folio)  BUILD_BUG_ON_INVALID(cond)
 #define VM_WARN_ON_ONCE_FOLIO(cond, folio)  BUILD_BUG_ON_INVALID(cond)
 #define VM_WARN_ON_ONCE_MM(cond, mm)  BUILD_BUG_ON_INVALID(cond)
+#define VM_WARN_ON_VMG(cond, vmg)  BUILD_BUG_ON_INVALID(cond)
 #define VM_WARN_ONCE(cond, format...) BUILD_BUG_ON_INVALID(cond)
 #define VM_WARN(cond, format...) BUILD_BUG_ON_INVALID(cond)
-#endif
+#endif /* CONFIG_DEBUG_VM */
 
 #ifdef CONFIG_DEBUG_VM_IRQSOFF
 #define VM_WARN_ON_IRQS_ENABLED() WARN_ON_ONCE(!irqs_disabled())
diff --git a/mm/debug.c b/mm/debug.c
index 95b6ab809c0e..8d2acf432385 100644
--- a/mm/debug.c
+++ b/mm/debug.c
@@ -249,6 +249,77 @@ void dump_mm(const struct mm_struct *mm)
 }
 EXPORT_SYMBOL(dump_mm);
 
+void dump_vmg(const struct vma_merge_struct *vmg, const char *reason)
+{
+	if (reason)
+		pr_warn("vmg %px dumped because: %s\n", vmg, reason);
+
+	if (!vmg) {
+		pr_warn("vmg %px state: (NULL)\n", vmg);
+		return;
+	}
+
+	pr_warn("vmg %px state: mm %px pgoff %lx\n"
+		"vmi %px [%lx,%lx)\n"
+		"prev %px next %px vma %px\n"
+		"start %lx end %lx flags %lx\n"
+		"file %px anon_vma %px policy %px\n"
+		"uffd_ctx %px\n"
+		"anon_name %px\n"
+		"merge_flags %x state %x\n",
+		vmg, vmg->mm, vmg->pgoff,
+		vmg->vmi, vmg->vmi ? vma_iter_addr(vmg->vmi) : 0,
+		vmg->vmi ? vma_iter_end(vmg->vmi) : 0,
+		vmg->prev, vmg->next, vmg->vma,
+		vmg->start, vmg->end, vmg->flags,
+		vmg->file, vmg->anon_vma, vmg->policy,
+#ifdef CONFIG_USERFAULTFD
+		vmg->uffd_ctx.ctx,
+#else
+		(void *)0,
+#endif
+		vmg->anon_name,
+		(int)vmg->merge_flags, (int)vmg->state);
+
+	if (vmg->mm) {
+		pr_warn("vmg %px mm:\n", vmg);
+		dump_mm(vmg->mm);
+	} else {
+		pr_warn("vmg %px mm: (NULL)\n", vmg);
+	}
+
+	if (vmg->vma) {
+		pr_warn("vmg %px vma:\n", vmg);
+		dump_vma(vmg->vma);
+	} else {
+		pr_warn("vmg %px vma: (NULL)\n", vmg);
+	}
+
+	if (vmg->prev) {
+		pr_warn("vmg %px prev:\n", vmg);
+		dump_vma(vmg->prev);
+	} else {
+		pr_warn("vmg %px prev: (NULL)\n", vmg);
+	}
+
+	if (vmg->next) {
+		pr_warn("vmg %px next:\n", vmg);
+		dump_vma(vmg->next);
+	} else {
+		pr_warn("vmg %px next: (NULL)\n", vmg);
+	}
+
+#ifdef CONFIG_DEBUG_VM_MAPLE_TREE
+	if (vmg->vmi) {
+		pr_warn("vmg %px vmi:\n", vmg);
+		vma_iter_dump_tree(vmg->vmi);
+	} else {
+		pr_warn("vmg %px vmi: (NULL)\n", vmg);
+	}
+#endif
+}
+EXPORT_SYMBOL(dump_vmg);
+
 static bool page_init_poisoning __read_mostly = true;
 
 static int __init setup_vm_debug(char *str)