diff --git a/debian/changelog b/debian/changelog
index 6352c1b..3fea107 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,10 @@
+linux (6.15.9-1) sid; urgency=medium
+
+  * New upstream stable update:
+    https://www.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.15.9
+
+ -- Konstantin Demin <rockdrilla@gmail.com>  Fri, 01 Aug 2025 16:49:13 +0300
+
 linux (6.15.8-1) sid; urgency=medium
 
   * New upstream stable update:
diff --git a/debian/patches/patchset-zen/sauce/0008-ZEN-mm-Stop-kswapd-early-when-nothing-s-waiting-for-.patch b/debian/patches/patchset-zen/sauce/0008-ZEN-mm-Stop-kswapd-early-when-nothing-s-waiting-for-.patch
index 0682194..ea94055 100644
--- a/debian/patches/patchset-zen/sauce/0008-ZEN-mm-Stop-kswapd-early-when-nothing-s-waiting-for-.patch
+++ b/debian/patches/patchset-zen/sauce/0008-ZEN-mm-Stop-kswapd-early-when-nothing-s-waiting-for-.patch
@@ -102,7 +102,7 @@ Contains:
  
 --- a/mm/vmscan.c
 +++ b/mm/vmscan.c
-@@ -6419,7 +6419,7 @@ retry:
+@@ -6427,7 +6427,7 @@ retry:
  	return 0;
  }
  
@@ -111,7 +111,7 @@ Contains:
  {
  	struct zone *zone;
  	unsigned long pfmemalloc_reserve = 0;
-@@ -6444,6 +6444,10 @@ static bool allow_direct_reclaim(pg_data
+@@ -6452,6 +6452,10 @@ static bool allow_direct_reclaim(pg_data
  
  	wmark_ok = free_pages > pfmemalloc_reserve / 2;
  
@@ -122,7 +122,7 @@ Contains:
  	/* kswapd must be awake if processes are being throttled */
  	if (!wmark_ok && waitqueue_active(&pgdat->kswapd_wait)) {
  		if (READ_ONCE(pgdat->kswapd_highest_zoneidx) > ZONE_NORMAL)
-@@ -6509,7 +6513,7 @@ static bool throttle_direct_reclaim(gfp_
+@@ -6517,7 +6521,7 @@ static bool throttle_direct_reclaim(gfp_
  
  		/* Throttle based on the first usable node */
  		pgdat = zone->zone_pgdat;
@@ -131,7 +131,7 @@ Contains:
  			goto out;
  		break;
  	}
-@@ -6531,11 +6535,14 @@ static bool throttle_direct_reclaim(gfp_
+@@ -6539,11 +6543,14 @@ static bool throttle_direct_reclaim(gfp_
  	 */
  	if (!(gfp_mask & __GFP_FS))
  		wait_event_interruptible_timeout(pgdat->pfmemalloc_wait,
@@ -148,7 +148,7 @@ Contains:
  
  	if (fatal_signal_pending(current))
  		return true;
-@@ -7056,14 +7063,14 @@ restart:
+@@ -7064,14 +7071,14 @@ restart:
  		 * able to safely make forward progress. Wake them
  		 */
  		if (waitqueue_active(&pgdat->pfmemalloc_wait) &&
diff --git a/debian/rules.real b/debian/rules.real
index 9478ac9..ecf1307 100644
--- a/debian/rules.real
+++ b/debian/rules.real
@@ -366,7 +366,7 @@ build_image: $(STAMPS_DIR)/build_$(ARCH)_$(FEATURESET)_$(FLAVOUR)
 
 binary_image: DH_STRIP_ARGS = --no-automatic-dbgsym
 binary_image: REAL_VERSION = $(ABINAME)$(LOCALVERSION)
-binary_image: SYSTEM_MAP_PATH = lib/modules/$(REAL_VERSION)/System.map.xz
+binary_image: SYSTEM_MAP_PATH = lib/modules/$(REAL_VERSION)/System.map
 binary_image: INSTALL_DIR = $(DESTDIR)/boot
 binary_image: DIR = $(BUILD_DIR)/build_$(ARCH)_$(FEATURESET)_$(FLAVOUR)
 binary_image: DIR2 = $(DIR)/output/image
@@ -379,9 +379,10 @@ ifneq ($(filter arm64 armel armhf mipsel mips64el mipsr6 mipsr6el mips64r6 mips6
 	dh_install --sourcedir=$(DIR2) usr
 endif
 	$(cleanup_config) $(DIR)/.config > $(DESTDIR)/boot/config-$(REAL_VERSION)
-	xz -9k < $(DIR)/System.map > $(DESTDIR)/$(SYSTEM_MAP_PATH)
-	echo "ffffffffffffffff B The real System.map is compressed into /$(SYSTEM_MAP_PATH)" > $(DESTDIR)/boot/System.map-$(REAL_VERSION)
-	rm -rf $(DESTDIR)/lib/firmware
+	cp -f $(DIR)/System.map $(DESTDIR)/$(SYSTEM_MAP_PATH)
+	chmod 0600 $(DESTDIR)/$(SYSTEM_MAP_PATH)
+	ln -s '/$(SYSTEM_MAP_PATH)' $(DESTDIR)/boot/System.map-$(REAL_VERSION)
+	rm -rvf $(DESTDIR)/lib/firmware
 	$(dh_binary_post)
 
 build_source: