Switch to SLUB as kernel allocator

debian/changelog

@@ -11,6 +11,8 @@ linux (4.15~rc8-1~exp2) UNRELEASED; urgency=medium
   * x86: Enable SCHED_MC_PRIO, HYPERV_VSOCKETS.
   * Enable NVME_MULTIPATH, NVME_FC, NVME_TARGET_FC, move nvme module into
     scsi-modules installer udeb.
+  * Switch to SLUB as kernel allocator. (Closes: #862718)
+    - Enable SLUB_DEBUG, SLAB_FREELIST_HARDENED except on armel/marvell.
 
   [ Uwe Kleine-König ]
   * [arm64] enable I2C_PXA for espressobin (Closes: #886983)

debian/config/armel/config.marvell

@@ -730,6 +730,8 @@ CONFIG_CC_OPTIMIZE_FOR_SIZE=y
 ## end choice
 # CONFIG_CHECKPOINT_RESTORE is not set
 # CONFIG_USERFAULTFD is not set
+# CONFIG_SLUB_DEBUG is not set
+# CONFIG_SLAB_FREELIST_HARDENED is not set
 # CONFIG_PROFILING is not set
 # CONFIG_MODULE_SIG is not set
 

debian/config/config

@@ -5924,13 +5924,16 @@ CONFIG_USERFAULTFD=y
 CONFIG_PERF_EVENTS=y
 # CONFIG_DEBUG_PERF_USE_VMALLOC is not set
 CONFIG_VM_EVENT_COUNTERS=y
+CONFIG_SLUB_DEBUG=y
+# CONFIG_SLUB_MEMCG_SYSFS_ON is not set
 # CONFIG_COMPAT_BRK is not set
 ## choice: Choose SLAB allocator
-CONFIG_SLAB=y
-# CONFIG_SLUB is not set
-# CONFIG_SLOB is not set
+CONFIG_SLUB=y
 ## end choice
+CONFIG_SLAB_MERGE_DEFAULT=y
 CONFIG_SLAB_FREELIST_RANDOM=y
+CONFIG_SLAB_FREELIST_HARDENED=y
+CONFIG_SLUB_CPU_PARTIAL=y
 # CONFIG_MMAP_ALLOW_UNINITIALIZED is not set
 CONFIG_PROFILING=y
 CONFIG_MODULES=y
@@ -6096,7 +6099,6 @@ CONFIG_MAGIC_SYSRQ=y
 CONFIG_MAGIC_SYSRQ_DEFAULT_ENABLE=0x01b6
 CONFIG_DEBUG_KERNEL=y
 # CONFIG_DEBUG_OBJECTS is not set
-# CONFIG_DEBUG_SLAB is not set
 # CONFIG_SLUB_DEBUG_ON is not set
 # CONFIG_SLUB_STATS is not set
 # CONFIG_DEBUG_KMEMLEAK is not set