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[Bug 1275116] Re: lowlatency-flavour crashes and locks up alot

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: Søren Holm <sgh@xxxxxx>
Date: Sun, 02 Feb 2014 12:44:43 -0000
Reply-to: Bug 1275116 <1275116@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
diff --git a/boot/config-3.13.0-6-generic b/boot/config-3.13.0-6-lowlatency
index 2684575..e86aff9 100644
--- a/boot/config-3.13.0-6-generic
+++ b/boot/config-3.13.0-6-lowlatency
@@ -1,6 +1,6 @@
 #
 # Automatically generated file; DO NOT EDIT.
-# Linux/i386 3.13.0-6-generic Kernel Configuration
+# Linux/i386 3.13.0-6-lowlatency Kernel Configuration
 #
 # CONFIG_64BIT is not set
 CONFIG_X86_32=y
@@ -64,7 +64,7 @@ CONFIG_KERNEL_GZIP=y
 # CONFIG_KERNEL_LZO is not set
 # CONFIG_KERNEL_LZ4 is not set
 CONFIG_DEFAULT_HOSTNAME="(none)"
-CONFIG_VERSION_SIGNATURE="Ubuntu 3.13.0-6.23-generic 3.13.0"
+CONFIG_VERSION_SIGNATURE="Ubuntu 3.13.0-6.23-lowlatency 3.13.0"
 CONFIG_SWAP=y
 CONFIG_SYSVIPC=y
 CONFIG_SYSVIPC_SYSCTL=y
@@ -86,7 +86,7 @@ CONFIG_GENERIC_IRQ_CHIP=y
 CONFIG_IRQ_DOMAIN=y
 # CONFIG_IRQ_DOMAIN_DEBUG is not set
 CONFIG_IRQ_FORCED_THREADING=y
-# CONFIG_IRQ_FORCED_THREADING_DEFAULT is not set
+CONFIG_IRQ_FORCED_THREADING_DEFAULT=y
 CONFIG_SPARSE_IRQ=y
 CONFIG_CLOCKSOURCE_WATCHDOG=y
 CONFIG_KTIME_SCALAR=y
@@ -121,14 +121,15 @@ CONFIG_TASK_IO_ACCOUNTING=y
 #
 # RCU Subsystem
 #
-CONFIG_TREE_RCU=y
-# CONFIG_PREEMPT_RCU is not set
+CONFIG_TREE_PREEMPT_RCU=y
+CONFIG_PREEMPT_RCU=y
 CONFIG_RCU_STALL_COMMON=y
 CONFIG_RCU_FANOUT=32
 CONFIG_RCU_FANOUT_LEAF=16
 # CONFIG_RCU_FANOUT_EXACT is not set
 CONFIG_RCU_FAST_NO_HZ=y
 # CONFIG_TREE_RCU_TRACE is not set
+# CONFIG_RCU_BOOST is not set
 # CONFIG_RCU_NOCB_CPU is not set
 # CONFIG_IKCONFIG is not set
 CONFIG_LOG_BUF_SHIFT=17
@@ -222,7 +223,6 @@ CONFIG_HAVE_OPROFILE=y
 CONFIG_OPROFILE_NMI_TIMER=y
 CONFIG_KPROBES=y
 CONFIG_JUMP_LABEL=y
-CONFIG_OPTPROBES=y
 CONFIG_KPROBES_ON_FTRACE=y
 CONFIG_UPROBES=y
 # CONFIG_HAVE_64BIT_ALIGNED_ACCESS is not set
@@ -342,11 +342,6 @@ CONFIG_PREEMPT_NOTIFIERS=y
 CONFIG_PADATA=y
 CONFIG_ASN1=y
 CONFIG_UNINLINE_SPIN_UNLOCK=y
-CONFIG_INLINE_SPIN_UNLOCK_IRQ=y
-CONFIG_INLINE_READ_UNLOCK=y
-CONFIG_INLINE_READ_UNLOCK_IRQ=y
-CONFIG_INLINE_WRITE_UNLOCK=y
-CONFIG_INLINE_WRITE_UNLOCK_IRQ=y
 CONFIG_MUTEX_SPIN_ON_OWNER=y
 CONFIG_FREEZER=y
 
@@ -438,8 +433,9 @@ CONFIG_NR_CPUS=8
 CONFIG_SCHED_SMT=y
 CONFIG_SCHED_MC=y
 # CONFIG_PREEMPT_NONE is not set
-CONFIG_PREEMPT_VOLUNTARY=y
-# CONFIG_PREEMPT is not set
+# CONFIG_PREEMPT_VOLUNTARY is not set
+CONFIG_PREEMPT=y
+CONFIG_PREEMPT_COUNT=y
 CONFIG_X86_LOCAL_APIC=y
 CONFIG_X86_IO_APIC=y
 CONFIG_X86_REROUTE_FOR_BROKEN_BOOT_IRQS=y
@@ -534,10 +530,10 @@ CONFIG_EFI_STUB=y
 CONFIG_SECCOMP=y
 CONFIG_CC_STACKPROTECTOR=y
 # CONFIG_HZ_100 is not set
-CONFIG_HZ_250=y
+# CONFIG_HZ_250 is not set
 # CONFIG_HZ_300 is not set
-# CONFIG_HZ_1000 is not set
-CONFIG_HZ=250
+CONFIG_HZ_1000=y
+CONFIG_HZ=1000
 CONFIG_SCHED_HRTICK=y
 CONFIG_KEXEC=y
 CONFIG_CRASH_DUMP=y
@@ -4881,7 +4877,6 @@ CONFIG_DRM_NOUVEAU=m
 CONFIG_NOUVEAU_DEBUG=5
 CONFIG_NOUVEAU_DEBUG_DEFAULT=3
 CONFIG_DRM_NOUVEAU_BACKLIGHT=y
-CONFIG_DRM_I810=m
 CONFIG_DRM_I915=m
 CONFIG_DRM_I915_KMS=y
 CONFIG_DRM_I915_FBDEV=y
@@ -7191,6 +7186,7 @@ CONFIG_PANIC_ON_OOPS_VALUE=0
 CONFIG_SCHED_DEBUG=y
 CONFIG_SCHEDSTATS=y
 CONFIG_TIMER_STATS=y
+# CONFIG_DEBUG_PREEMPT is not set
 
 #
 # Lock Debugging (spinlocks, mutexes, etc...)
@@ -7217,9 +7213,11 @@ CONFIG_DEBUG_BUGVERBOSE=y
 #
 # RCU Debugging
 #
+# CONFIG_PROVE_RCU_DELAY is not set
 # CONFIG_SPARSE_RCU_POINTER is not set
 # CONFIG_RCU_TORTURE_TEST is not set
 CONFIG_RCU_CPU_STALL_TIMEOUT=60
+# CONFIG_RCU_CPU_STALL_VERBOSE is not set
 # CONFIG_RCU_CPU_STALL_INFO is not set
 # CONFIG_RCU_TRACE is not set
 # CONFIG_DEBUG_BLOCK_EXT_DEVT is not set
@@ -7254,6 +7252,7 @@ CONFIG_FTRACE=y
 CONFIG_FUNCTION_TRACER=y
 CONFIG_FUNCTION_GRAPH_TRACER=y
 # CONFIG_IRQSOFF_TRACER is not set
+# CONFIG_PREEMPT_TRACER is not set
 CONFIG_SCHED_TRACER=y
 CONFIG_FTRACE_SYSCALLS=y
 CONFIG_TRACER_SNAPSHOT=y

-- 
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https://bugs.launchpad.net/bugs/1275116

Title:
  lowlatency-flavour crashes and locks up alot

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  The 3.11 flavour that where upgraded to 3.13 today crashed 10 times
  this morning. I have the crashdums, but I figured that it might have
  been solved in 3.13. Unfortunatly it seems like it is not.

  I will add crashdumps when I get crashes that do not just lockup the
  machine but currently I have only seem complete lockups with 3.13

  So the essense is :

  3.11-lowlatency crashed 10 time today most of the crashes reached the console so I could see the panic text.
  3.13-lowlatency crash 1 time 10 minuttes after first boot. No VT swtich. During next reboot it also locked.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-6-lowlatency (not installed)
  ProcVersionSignature: Ubuntu 3.13.0-6.23-generic 3.13.0
  Uname: Linux 3.13.0-6-generic i686
  ApportVersion: 2.13.2-0ubuntu2
  Architecture: i386
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  sgh        2176 F.... pulseaudio
  CurrentDesktop: KDE
  Date: Fri Jan 31 23:38:10 2014
  InstallationDate: Installed on 2013-12-24 (38 days ago)
  InstallationMedia: Kubuntu 14.04 LTS "Trusty Tahr" - Alpha i386 (20131224)
  MachineType: LENOVO 2356GCG
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-6-generic root=UUID=6376d4d7-bb9e-4488-bb5f-798e6c41f3fc ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-6-generic N/A
   linux-backports-modules-3.13.0-6-generic  N/A
   linux-firmware                            1.123
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 07/02/2012
  dmi.bios.vendor: LENOVO
  dmi.bios.version: G7ET31WW (1.13 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 2356GCG
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Defined
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvrG7ET31WW(1.13):bd07/02/2012:svnLENOVO:pn2356GCG:pvrThinkPadT430s:rvnLENOVO:rn2356GCG:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 2356GCG
  dmi.product.version: ThinkPad T430s
  dmi.sys.vendor: LENOVO

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References

[Bug 1275116] [NEW] lowlatency-flavour crashes and locks up alot
From: Søren Holm, 2014-01-31