diff --git a/lib/tests/nvml.sh b/lib/tests/nvml.sh
index 3244dcbcd..d39870afb 100644
--- a/lib/tests/nvml.sh
+++ b/lib/tests/nvml.sh
@@ -104,6 +104,9 @@ run()
 			}
 		}
 
+		# export this env variable to enable obj_tx_a* tests
+		[[ $testcase =~ obj_tx_a ]] && export MALLOC_MMAP_THRESHOLD_=0
+
 		if [ "$LKP_LOCAL_RUN" != "1" ] && [[ -s "$user_filter" ]] && grep -w -q "$testcase" "$user_filter"; then
 			log_cmd chown lkp:lkp -R $BENCHMARK_ROOT/$casename
 			log_cmd chown lkp:lkp -R /tmp
@@ -112,5 +115,8 @@ run()
 		else
 			log_cmd ./RUNTESTS -f $test $testcase  2>&1
 		fi  
+
+		# unset env variable in case it do impact on other tests
+		[[ $testcase =~ obj_tx_a ]] && unset MALLOC_MMAP_THRESHOLD_
 	done <<< "$testcases"
 }
diff --git a/pack/nvml b/pack/nvml
index a8113c7b6..61b511104 100755
--- a/pack/nvml
+++ b/pack/nvml
@@ -60,6 +60,7 @@ build_ignore_file()
 	git grep "require_dax_devices" | awk -F '[:/]' '{if (!a[$3]++ && $3 != "unittest") {print $3} }' >> ignore
 	echo "vmmalloc_fork" >> ignore
 	echo "pmempool_check" >> ignore
+	echo "obj_pmalloc_mt" >> ignore
 }
 
 # The dax tests need ndctl tool to create dax device.
diff --git a/pack/xfstests-addon/tests/btrfs-ignore b/pack/xfstests-addon/tests/btrfs-ignore
index a73147121..da0489c01 100644
--- a/pack/xfstests-addon/tests/btrfs-ignore
+++ b/pack/xfstests-addon/tests/btrfs-ignore
@@ -14,7 +14,6 @@
 088
 101
 006
-010
 012
 035
 061
diff --git a/pack/xfstests-addon/tests/xfs-group1 b/pack/xfstests-addon/tests/xfs-group1
index 122770098..ea9e728af 100644
--- a/pack/xfstests-addon/tests/xfs-group1
+++ b/pack/xfstests-addon/tests/xfs-group1
@@ -21,6 +21,7 @@
 182
 183
 184
+191
 192
 193
 196
diff --git a/pack/xfstests-addon/tests/xfs-ignore b/pack/xfstests-addon/tests/xfs-ignore
index df77db078..f538e36d3 100644
--- a/pack/xfstests-addon/tests/xfs-ignore
+++ b/pack/xfstests-addon/tests/xfs-ignore
@@ -60,7 +60,6 @@
 186
 187
 189
-191
 197
 224
 267
diff --git a/repo/linux/f2fs b/repo/linux/f2fs
index b4f9959a1..8e3e0c73d 100644
--- a/repo/linux/f2fs
+++ b/repo/linux/f2fs
@@ -1,5 +1,6 @@
 url: https://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs.git
 integration_testing_branches: dev
+git_am_branch: dev-test
 mail_cc: linux-f2fs-devel@lists.sourceforge.net
 owner: Jaegeuk Kim <jaegeuk@kernel.org>
 subsystems:
diff --git a/repo/linux/ragnatech b/repo/linux/ragnatech
index 4ff4acea9..8c8bed283 100644
--- a/repo/linux/ragnatech
+++ b/repo/linux/ragnatech
@@ -1,2 +1,3 @@
-url: https://git.ragnatech.se/linux
+url: git://git.ragnatech.se/linux
 owner: Niklas Söderlund <niklas.soderlund@ragnatech.se>
+notify_build_success_branch: .*
diff --git a/sbin/make.cross b/sbin/make.cross
index 7f802b195..17a36bbb8 100755
--- a/sbin/make.cross
+++ b/sbin/make.cross
@@ -180,6 +180,9 @@ setup_crosstool()
 		mn10300)
 			gcc_arch=am33_2.0-linux
 			;;
+		h8300)
+			gcc_arch=h8300-elf
+			;;
 		*)
 			gcc_arch=$ARCH-linux
 			;;
diff --git a/spec/stats/kmsg.05 b/spec/stats/kmsg.05
new file mode 100644
index 000000000..904971be7
--- /dev/null
+++ b/spec/stats/kmsg.05
@@ -0,0 +1,26 @@
+<0>[   42.962798] BUG: spinlock bad magic on CPU#0, trinity-c0/1747
+<0>[   42.964565]  lock: 0xffff880009c31088, .magic: ffff8800, .owner: ����/0, .owner_cpu: 378112
+<4>[   42.969299] CPU: 0 PID: 1747 Comm: trinity-c0 Tainted: G        W       4.11.0-01315-g16b7629 #1
+<4>[   42.971951] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.3-20161025_171302-gandalf 04/01/2014
+<4>[   42.974995] Call Trace:
+<4>[   42.975769]  dump_stack+0xf9/0x17d
+<4>[   42.976808]  spin_bug+0xc5/0x110
+<4>[   42.977809]  do_raw_spin_lock+0x5d/0x160
+<4>[   42.979004]  _raw_spin_lock_irq+0x2b/0x30
+<4>[   42.980230]  rwsem_down_read_failed+0x5d/0x1e0
+<4>[   42.981590]  ? _find_next_bit+0xe5/0x100
+<4>[   42.985178]  call_rwsem_down_read_failed+0x18/0x30
+<4>[   42.986627]  ? call_rwsem_down_read_failed+0x18/0x30
+<4>[   42.988148]  down_read+0x2e/0x60
+<4>[   42.989142]  iterate_supers+0x9b/0x1b0
+<4>[   42.990296]  ? sync_fs_one_sb+0x70/0x70
+<4>[   42.991475]  sys_sync+0x3f/0xd0
+<4>[   42.992438]  do_syscall_64+0x11a/0x390
+<4>[   42.993584]  entry_SYSCALL64_slow_path+0x25/0x25
+<4>[   42.994982] RIP: 0033:0x7ff003a526d9
+<4>[   42.996082] RSP: 002b:00007fffb1687828 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
+<4>[   43.001246] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007ff003a526d9
+<4>[   43.003390] RDX: ffffffffff000010 RSI: ffffffffffffff00 RDI: ffffffffffffff4f
+<4>[   43.005535] RBP: 00000000000000a2 R08: a400000000000000 R09: ffffffffffffff95
+<4>[   43.007692] R10: ffffffffffffff9f R11: 0000000000000246 R12: 0000000000000000
+<4>[   43.009835] R13: 00000000000000a2 R14: 00000000000000a2 R15: ffffffffffffff95
diff --git a/spec/stats/kmsg.05.yaml b/spec/stats/kmsg.05.yaml
new file mode 100644
index 000000000..674a51027
--- /dev/null
+++ b/spec/stats/kmsg.05.yaml
@@ -0,0 +1,8 @@
+
+# lock: .* .magic: .* .owner: .* .owner_cpu:
+lock:#,.magic:#,.owner:____,.owner_cpu: 1
+message:lock:#,.magic:#,.owner:____,.owner_cpu: <0>[   42.964565]  lock: 0xffff880009c31088, .magic: ffff8800, .owner: ____/0, .owner_cpu: 378112
+pattern:lock:#,.magic:#,.owner:____,.owner_cpu: lock: .* .magic: .* .owner: .* .owner_cpu:
+
+timestamp:last: 43.009835
+timestamp:lock:#,.magic:#,.owner:____,.owner_cpu: 42.964565
diff --git a/stats/dmesg b/stats/dmesg
index 82fedeb6b..e7f614f24 100755
--- a/stats/dmesg
+++ b/stats/dmesg
@@ -23,6 +23,7 @@ LKP_SRC = ENV['LKP_SRC'] || File.dirname(File.dirname(File.realpath($PROGRAM_NAM
 
 require "#{LKP_SRC}/lib/dmesg"
 require "#{LKP_SRC}/lib/log"
+require "#{LKP_SRC}/lib/string_ext"
 
 if ARGV[0]
   kmsg_file = ARGV[0]
@@ -96,6 +97,7 @@ else
 
   lines = kmsg_lines
   output = grep_printk_errors kmsg_file, kmsg
+  output.replace_invalid_utf8!
 
   oops_map = {}
   output.each_line do |line|
diff --git a/stats/ftrace b/stats/ftrace
index b0377ba7b..7ea739889 100755
--- a/stats/ftrace
+++ b/stats/ftrace
@@ -8,7 +8,11 @@ TIME_DELTA  = YAML.load_file(RESULT_ROOT + '/job.yaml')['time_delta'].to_f
 FMT_DIR     = RESULT_ROOT + '/trace_event/'
 
 KEY_PREFIX_MAPPING = YAML.load_file(File.dirname(__FILE__) + '/../etc/ftrace_key_prefix')
-BDI_DEV_MAPPING = YAML.load_file(RESULT_ROOT + '/bdi_dev_mapping') if File.exist? RESULT_ROOT + '/bdi_dev_mapping'
+BDI_DEV_MAPPING = if File.exist? RESULT_ROOT + '/bdi_dev_mapping'
+                    YAML.load_file(RESULT_ROOT + '/bdi_dev_mapping')
+                  else
+                    nil
+                  end
 
 # A hash to make sure we record one event data only
 # for each event in 1s unit