Boot hang with stack protector on x86

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* Boot hang with stack protector on x86_64
@ 2008-02-22  0:29 James Morris
  2008-02-22  1:14 ` Arjan van de Ven
  2008-02-22  7:59 ` Regression [Was: Boot hang with stack protector on x86_64] Sam Ravnborg
  0 siblings, 2 replies; 15+ messages in thread
From: James Morris @ 2008-02-22  0:29 UTC (permalink / raw)
  To: Sam Ravnborg; +Cc: linux-kernel, Arjan van de Ven

I've been getting an immediate hang on boot since:

e06b8b98da071f7dd78fb7822991694288047df0 kbuild: allow -fstack-protector to take effect

This is on an x86_64 system (actually an Intel SDV -- so it might be 
"special").

My .config has the following:

CONFIG_CC_STACKPROTECTOR=y
CONFIG_CC_STACKPROTECTOR_ALL=y

Let me know if you need more information.

Interestingly, git-bisect was unable to identify the changeset, and 
reliably mis-identified this as the problem:

71c044752cdae89136862495f244d37073e2cf66 V4L/DVB (7080): zr364xx: add support for Pentax Optio 50

(which I don't even build).

- James
-- 
James Morris
<jmorris@namei.org>

^ permalink raw reply	[flat|nested] 15+ messages in thread

* Re: Boot hang with stack protector on x86_64
  2008-02-22  0:29 Boot hang with stack protector on x86_64 James Morris
@ 2008-02-22  1:14 ` Arjan van de Ven
  2008-02-22  7:59 ` Regression [Was: Boot hang with stack protector on x86_64] Sam Ravnborg
  1 sibling, 0 replies; 15+ messages in thread
From: Arjan van de Ven @ 2008-02-22  1:14 UTC (permalink / raw)
  To: James Morris; +Cc: Sam Ravnborg, linux-kernel

On Fri, 22 Feb 2008 11:29:37 +1100 (EST)
James Morris <jmorris@namei.org> wrote:

> I've been getting an immediate hang on boot since:
> 
> e06b8b98da071f7dd78fb7822991694288047df0 kbuild: allow
> -fstack-protector to take effect
> 
> This is on an x86_64 system (actually an Intel SDV -- so it might be 
> "special").
> 
> My .config has the following:
> 
> CONFIG_CC_STACKPROTECTOR=y
> CONFIG_CC_STACKPROTECTOR_ALL=y
> 
> Let me know if you need more information.
> 
> 
Ingo has a set of stackprotector fixes that should go to mainline ASAP.


-- 
If you want to reach me at my work email, use arjan@linux.intel.com
For development, discussion and tips for power savings, 
visit http://www.lesswatts.org

^ permalink raw reply	[flat|nested] 15+ messages in thread

* Regression [Was: Boot hang with stack protector on x86_64]
  2008-02-22  0:29 Boot hang with stack protector on x86_64 James Morris
  2008-02-22  1:14 ` Arjan van de Ven
@ 2008-02-22  7:59 ` Sam Ravnborg
  2008-02-22  9:36   ` Ingo Molnar
  2008-02-22 15:43   ` Linus Torvalds
  1 sibling, 2 replies; 15+ messages in thread
From: Sam Ravnborg @ 2008-02-22  7:59 UTC (permalink / raw)
  To: James Morris, Linus Torvalds
  Cc: linux-kernel, Arjan van de Ven, Thomas Gleixner, Ingo Molnar,
	H. Peter Anvin

Hi Linus.
On Fri, Feb 22, 2008 at 11:29:37AM +1100, James Morris wrote:
> I've been getting an immediate hang on boot since:
> 
> e06b8b98da071f7dd78fb7822991694288047df0 kbuild: allow -fstack-protector to take effect
> 
> This is on an x86_64 system (actually an Intel SDV -- so it might be 
> "special").
This is a regression. Can you please revert this commit.
We can redo it wehn the -fstack-protector stuff are properly fixed in x86.

	Sam

[Kept rest of the mail for reference]

> 
> My .config has the following:
> 
> CONFIG_CC_STACKPROTECTOR=y
> CONFIG_CC_STACKPROTECTOR_ALL=y
> 
> Let me know if you need more information.
> 
> 
> Interestingly, git-bisect was unable to identify the changeset, and 
> reliably mis-identified this as the problem:
> 
> 71c044752cdae89136862495f244d37073e2cf66 V4L/DVB (7080): zr364xx: add support for Pentax Optio 50
> 
> (which I don't even build).
> 
> 
> - James
> -- 
> James Morris
> <jmorris@namei.org>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at  http://www.tux.org/lkml/

^ permalink raw reply	[flat|nested] 15+ messages in thread

* Re: Regression [Was: Boot hang with stack protector on x86_64]
  2008-02-22  7:59 ` Regression [Was: Boot hang with stack protector on x86_64] Sam Ravnborg
@ 2008-02-22  9:36   ` Ingo Molnar
  2008-02-22 10:33     ` James Morris
  2008-02-22 15:43   ` Linus Torvalds
  1 sibling, 1 reply; 15+ messages in thread
From: Ingo Molnar @ 2008-02-22  9:36 UTC (permalink / raw)
  To: Sam Ravnborg
  Cc: James Morris, Linus Torvalds, linux-kernel, Arjan van de Ven,
	Thomas Gleixner, Ingo Molnar, H. Peter Anvin


* Sam Ravnborg <sam@ravnborg.org> wrote:

> > This is on an x86_64 system (actually an Intel SDV -- so it might be 
> > "special").
>
> This is a regression. Can you please revert this commit. We can redo 
> it wehn the -fstack-protector stuff are properly fixed in x86.

No!

James, could you please check whether x86.git#testing:

   http://people.redhat.com/mingo/x86.git/README

works fine for you? That has all the current stackprotector fixes. I 
plan to send a separate pull request with just the stackprotector fixes 
to Linus, they are looking good in testing so far.

	Ingo

^ permalink raw reply	[flat|nested] 15+ messages in thread

* Re: Regression [Was: Boot hang with stack protector on x86_64]
  2008-02-22  9:36   ` Ingo Molnar
@ 2008-02-22 10:33     ` James Morris
  2008-02-22 12:17       ` Ingo Molnar
  0 siblings, 1 reply; 15+ messages in thread
From: James Morris @ 2008-02-22 10:33 UTC (permalink / raw)
  To: Ingo Molnar
  Cc: Sam Ravnborg, Linus Torvalds, linux-kernel, Arjan van de Ven,
	Thomas Gleixner, Ingo Molnar, H. Peter Anvin

On Fri, 22 Feb 2008, Ingo Molnar wrote:

> 
> * Sam Ravnborg <sam@ravnborg.org> wrote:
> 
> > > This is on an x86_64 system (actually an Intel SDV -- so it might be 
> > > "special").
> >
> > This is a regression. Can you please revert this commit. We can redo 
> > it wehn the -fstack-protector stuff are properly fixed in x86.
> 
> No!
> 
> James, could you please check whether x86.git#testing:
> 
>    http://people.redhat.com/mingo/x86.git/README
> 
> works fine for you? That has all the current stackprotector fixes. I 
> plan to send a separate pull request with just the stackprotector fixes 
> to Linus, they are looking good in testing so far.

Nope, same problem.

(I followed your instructions in the readme exactly).


- James
-- 
James Morris
<jmorris@namei.org>

^ permalink raw reply	[flat|nested] 15+ messages in thread

* Re: Regression [Was: Boot hang with stack protector on x86_64]
  2008-02-22 10:33     ` James Morris
@ 2008-02-22 12:17       ` Ingo Molnar
  2008-02-22 13:02         ` James Morris
  0 siblings, 1 reply; 15+ messages in thread
From: Ingo Molnar @ 2008-02-22 12:17 UTC (permalink / raw)
  To: James Morris
  Cc: Sam Ravnborg, Linus Torvalds, linux-kernel, Arjan van de Ven,
	Thomas Gleixner, Ingo Molnar, H. Peter Anvin


* James Morris <jmorris@namei.org> wrote:

> > works fine for you? That has all the current stackprotector fixes. I 
> > plan to send a separate pull request with just the stackprotector 
> > fixes to Linus, they are looking good in testing so far.
> 
> Nope, same problem.
> 
> (I followed your instructions in the readme exactly).

stupid double check, does "git-log | grep stackpro" give you the fixes:

    This patch adds a simple self-test capability to the stackprotector
    x86: unify stackprotector features
    streamline the stackprotector features under a single option
    x86: stackprotector: mix TSC to the boot canary
    x86: fix the stackprotector canary of the boot CPU
    stackprotector: add boot_init_stack_canary()
    stackprotector: include files

?

Please send me your full .config and the gcc version you used for 
building the failing kernel.

	Ingo

^ permalink raw reply	[flat|nested] 15+ messages in thread

* Re: Regression [Was: Boot hang with stack protector on x86_64]
  2008-02-22 12:17       ` Ingo Molnar
@ 2008-02-22 13:02         ` James Morris
  2008-02-22 13:27           ` Ingo Molnar
  2008-02-23  6:18           ` Ingo Molnar
  0 siblings, 2 replies; 15+ messages in thread
From: James Morris @ 2008-02-22 13:02 UTC (permalink / raw)
  To: Ingo Molnar
  Cc: Sam Ravnborg, Linus Torvalds, linux-kernel, Arjan van de Ven,
	Thomas Gleixner, Ingo Molnar, H. Peter Anvin

[-- Attachment #1: Type: TEXT/PLAIN, Size: 1710 bytes --]

On Fri, 22 Feb 2008, Ingo Molnar wrote:

> 
> * James Morris <jmorris@namei.org> wrote:
> 
> > > works fine for you? That has all the current stackprotector fixes. I 
> > > plan to send a separate pull request with just the stackprotector 
> > > fixes to Linus, they are looking good in testing so far.
> > 
> > Nope, same problem.
> > 
> > (I followed your instructions in the readme exactly).
> 
> stupid double check, does "git-log | grep stackpro" give you the fixes:
> 
>     This patch adds a simple self-test capability to the stackprotector
>     x86: unify stackprotector features
>     streamline the stackprotector features under a single option
>     x86: stackprotector: mix TSC to the boot canary
>     x86: fix the stackprotector canary of the boot CPU
>     stackprotector: add boot_init_stack_canary()
>     stackprotector: include files
> 
> ?

Yes.

> 
> Please send me your full .config and the gcc version you used for 
> building the failing kernel.

config attached.

$ gcc -v
Using built-in specs.
Target: x86_64-redhat-linux
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man 
--infodir=/usr/share/info --enable-shared --enable-threads=posix 
--enable-checking=release --with-system-zlib --enable-__cxa_atexit 
--disable-libunwind-exceptions 
--enable-languages=c,c++,objc,obj-c++,java,fortran,ada 
--enable-java-awt=gtk --disable-dssi --enable-plugin 
--with-java-home=/usr/lib/jvm/java-1.5.0-gcj-1.5.0.0/jre 
--enable-libgcj-multifile --enable-java-maintainer-mode 
--with-ecj-jar=/usr/share/java/eclipse-ecj.jar --with-cpu=generic 
--host=x86_64-redhat-linux
Thread model: posix
gcc version 4.1.2 20071124 (Red Hat 4.1.2-36)


-- 

James Morris 
<jmorris@namei.org>

[-- Attachment #2: Type: TEXT/plain, Size: 30544 bytes --]

#
# Automatically generated make config: don't edit
# Linux kernel version: 2.6.25-rc2
# Fri Feb 22 21:27:37 2008
#
CONFIG_64BIT=y
# CONFIG_X86_32 is not set
CONFIG_X86_64=y
CONFIG_X86=y
# CONFIG_GENERIC_LOCKBREAK is not set
CONFIG_GENERIC_TIME=y
CONFIG_GENERIC_CMOS_UPDATE=y
CONFIG_CLOCKSOURCE_WATCHDOG=y
CONFIG_GENERIC_CLOCKEVENTS=y
CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y
CONFIG_LOCKDEP_SUPPORT=y
CONFIG_STACKTRACE_SUPPORT=y
CONFIG_HAVE_LATENCYTOP_SUPPORT=y
CONFIG_SEMAPHORE_SLEEPERS=y
CONFIG_FAST_CMPXCHG_LOCAL=y
CONFIG_MMU=y
CONFIG_ZONE_DMA=y
# CONFIG_QUICKLIST is not set
CONFIG_GENERIC_ISA_DMA=y
CONFIG_GENERIC_IOMAP=y
CONFIG_GENERIC_BUG=y
CONFIG_GENERIC_HWEIGHT=y
# CONFIG_GENERIC_GPIO is not set
CONFIG_ARCH_MAY_HAVE_PC_FDC=y
CONFIG_DMI=y
CONFIG_RWSEM_GENERIC_SPINLOCK=y
# CONFIG_RWSEM_XCHGADD_ALGORITHM is not set
# CONFIG_ARCH_HAS_ILOG2_U32 is not set
# CONFIG_ARCH_HAS_ILOG2_U64 is not set
CONFIG_ARCH_HAS_CPU_IDLE_WAIT=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
CONFIG_GENERIC_TIME_VSYSCALL=y
CONFIG_ARCH_HAS_CPU_RELAX=y
CONFIG_HAVE_SETUP_PER_CPU_AREA=y
CONFIG_ARCH_HIBERNATION_POSSIBLE=y
CONFIG_ARCH_SUSPEND_POSSIBLE=y
CONFIG_ZONE_DMA32=y
CONFIG_ARCH_POPULATES_NODE_MAP=y
CONFIG_AUDIT_ARCH=y
CONFIG_ARCH_SUPPORTS_AOUT=y
CONFIG_GENERIC_HARDIRQS=y
CONFIG_GENERIC_IRQ_PROBE=y
CONFIG_GENERIC_PENDING_IRQ=y
CONFIG_X86_SMP=y
CONFIG_X86_64_SMP=y
CONFIG_X86_HT=y
CONFIG_X86_TRAMPOLINE=y
# CONFIG_KTIME_SCALAR is not set
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"

#
# General setup
#
CONFIG_EXPERIMENTAL=y
CONFIG_LOCK_KERNEL=y
CONFIG_INIT_ENV_ARG_LIMIT=32
CONFIG_LOCALVERSION=""
# CONFIG_LOCALVERSION_AUTO is not set
CONFIG_SWAP=y
CONFIG_SYSVIPC=y
CONFIG_SYSVIPC_SYSCTL=y
CONFIG_POSIX_MQUEUE=y
CONFIG_BSD_PROCESS_ACCT=y
CONFIG_BSD_PROCESS_ACCT_V3=y
CONFIG_TASKSTATS=y
CONFIG_TASK_DELAY_ACCT=y
CONFIG_TASK_XACCT=y
CONFIG_TASK_IO_ACCOUNTING=y
CONFIG_AUDIT=y
CONFIG_AUDITSYSCALL=y
CONFIG_AUDIT_TREE=y
# CONFIG_IKCONFIG is not set
CONFIG_LOG_BUF_SHIFT=17
CONFIG_CGROUPS=y
CONFIG_CGROUP_DEBUG=y
CONFIG_CGROUP_NS=y
CONFIG_CPUSETS=y
# CONFIG_GROUP_SCHED is not set
CONFIG_CGROUP_CPUACCT=y
CONFIG_RESOURCE_COUNTERS=y
CONFIG_SYSFS_DEPRECATED=y
CONFIG_CGROUP_MEM_CONT=y
CONFIG_PROC_PID_CPUSET=y
CONFIG_RELAY=y
CONFIG_NAMESPACES=y
CONFIG_UTS_NS=y
CONFIG_IPC_NS=y
CONFIG_USER_NS=y
CONFIG_PID_NS=y
CONFIG_BLK_DEV_INITRD=y
CONFIG_INITRAMFS_SOURCE=""
CONFIG_CC_OPTIMIZE_FOR_SIZE=y
CONFIG_SYSCTL=y
# CONFIG_EMBEDDED is not set
CONFIG_UID16=y
CONFIG_SYSCTL_SYSCALL=y
CONFIG_KALLSYMS=y
CONFIG_KALLSYMS_ALL=y
CONFIG_KALLSYMS_EXTRA_PASS=y
CONFIG_HOTPLUG=y
CONFIG_PRINTK=y
CONFIG_BUG=y
CONFIG_ELF_CORE=y
# CONFIG_COMPAT_BRK is not set
CONFIG_BASE_FULL=y
CONFIG_FUTEX=y
CONFIG_ANON_INODES=y
CONFIG_EPOLL=y
CONFIG_SIGNALFD=y
CONFIG_TIMERFD=y
CONFIG_EVENTFD=y
CONFIG_SHMEM=y
CONFIG_VM_EVENT_COUNTERS=y
CONFIG_SLAB=y
# CONFIG_SLUB is not set
# CONFIG_SLOB is not set
# CONFIG_PROFILING is not set
# CONFIG_MARKERS is not set
CONFIG_HAVE_OPROFILE=y
# CONFIG_KPROBES is not set
CONFIG_HAVE_KPROBES=y
CONFIG_PROC_PAGE_MONITOR=y
CONFIG_SLABINFO=y
CONFIG_RT_MUTEXES=y
# CONFIG_TINY_SHMEM is not set
CONFIG_BASE_SMALL=0
CONFIG_MODULES=y
CONFIG_MODULE_UNLOAD=y
CONFIG_MODULE_FORCE_UNLOAD=y
CONFIG_MODVERSIONS=y
CONFIG_MODULE_SRCVERSION_ALL=y
CONFIG_KMOD=y
CONFIG_STOP_MACHINE=y
CONFIG_BLOCK=y
# CONFIG_BLK_DEV_IO_TRACE is not set
# CONFIG_BLK_DEV_BSG is not set
CONFIG_BLOCK_COMPAT=y

#
# IO Schedulers
#
CONFIG_IOSCHED_NOOP=y
# CONFIG_IOSCHED_AS is not set
# CONFIG_IOSCHED_DEADLINE is not set
CONFIG_IOSCHED_CFQ=y
# CONFIG_DEFAULT_AS is not set
# CONFIG_DEFAULT_DEADLINE is not set
CONFIG_DEFAULT_CFQ=y
# CONFIG_DEFAULT_NOOP is not set
CONFIG_DEFAULT_IOSCHED="cfq"
CONFIG_CLASSIC_RCU=y
# CONFIG_PREEMPT_RCU is not set

#
# Processor type and features
#
CONFIG_TICK_ONESHOT=y
CONFIG_NO_HZ=y
CONFIG_HIGH_RES_TIMERS=y
CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
CONFIG_SMP=y
CONFIG_X86_PC=y
# CONFIG_X86_ELAN is not set
# CONFIG_X86_VOYAGER is not set
# CONFIG_X86_NUMAQ is not set
# CONFIG_X86_SUMMIT is not set
# CONFIG_X86_BIGSMP is not set
# CONFIG_X86_VISWS is not set
# CONFIG_X86_GENERICARCH is not set
# CONFIG_X86_ES7000 is not set
# CONFIG_X86_RDC321X is not set
# CONFIG_X86_VSMP is not set
CONFIG_PARAVIRT_GUEST=y
CONFIG_PARAVIRT=y
# CONFIG_M386 is not set
# CONFIG_M486 is not set
# CONFIG_M586 is not set
# CONFIG_M586TSC is not set
# CONFIG_M586MMX is not set
# CONFIG_M686 is not set
# CONFIG_MPENTIUMII is not set
# CONFIG_MPENTIUMIII is not set
# CONFIG_MPENTIUMM is not set
# CONFIG_MPENTIUM4 is not set
# CONFIG_MK6 is not set
# CONFIG_MK7 is not set
# CONFIG_MK8 is not set
# CONFIG_MCRUSOE is not set
# CONFIG_MEFFICEON is not set
# CONFIG_MWINCHIPC6 is not set
# CONFIG_MWINCHIP2 is not set
# CONFIG_MWINCHIP3D is not set
# CONFIG_MGEODEGX1 is not set
# CONFIG_MGEODE_LX is not set
# CONFIG_MCYRIXIII is not set
# CONFIG_MVIAC3_2 is not set
# CONFIG_MVIAC7 is not set
# CONFIG_MPSC is not set
CONFIG_MCORE2=y
# CONFIG_GENERIC_CPU is not set
CONFIG_X86_L1_CACHE_BYTES=64
CONFIG_X86_INTERNODE_CACHE_BYTES=64
CONFIG_X86_CMPXCHG=y
CONFIG_X86_L1_CACHE_SHIFT=6
CONFIG_X86_GOOD_APIC=y
CONFIG_X86_INTEL_USERCOPY=y
CONFIG_X86_USE_PPRO_CHECKSUM=y
CONFIG_X86_P6_NOP=y
CONFIG_X86_TSC=y
CONFIG_X86_MINIMUM_CPU_FAMILY=64
CONFIG_X86_DEBUGCTLMSR=y
CONFIG_HPET_TIMER=y
CONFIG_GART_IOMMU=y
CONFIG_CALGARY_IOMMU=y
CONFIG_CALGARY_IOMMU_ENABLED_BY_DEFAULT=y
CONFIG_IOMMU_HELPER=y
CONFIG_SWIOTLB=y
CONFIG_NR_CPUS=64
CONFIG_SCHED_SMT=y
CONFIG_SCHED_MC=y
# CONFIG_PREEMPT_NONE is not set
CONFIG_PREEMPT_VOLUNTARY=y
# CONFIG_PREEMPT is not set
# CONFIG_RCU_TRACE is not set
CONFIG_X86_LOCAL_APIC=y
CONFIG_X86_IO_APIC=y
CONFIG_X86_MCE=y
CONFIG_X86_MCE_INTEL=y
# CONFIG_X86_MCE_AMD is not set
# CONFIG_I8K is not set
CONFIG_MICROCODE=m
CONFIG_MICROCODE_OLD_INTERFACE=y
CONFIG_X86_MSR=y
CONFIG_X86_CPUID=y
# CONFIG_NUMA is not set
CONFIG_ARCH_SPARSEMEM_DEFAULT=y
CONFIG_ARCH_SPARSEMEM_ENABLE=y
CONFIG_ARCH_SELECT_MEMORY_MODEL=y
CONFIG_ARCH_MEMORY_PROBE=y
CONFIG_SELECT_MEMORY_MODEL=y
# CONFIG_FLATMEM_MANUAL is not set
# CONFIG_DISCONTIGMEM_MANUAL is not set
CONFIG_SPARSEMEM_MANUAL=y
CONFIG_SPARSEMEM=y
CONFIG_HAVE_MEMORY_PRESENT=y
# CONFIG_SPARSEMEM_STATIC is not set
CONFIG_SPARSEMEM_EXTREME=y
CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y
CONFIG_SPARSEMEM_VMEMMAP=y
CONFIG_MEMORY_HOTPLUG=y
CONFIG_MEMORY_HOTPLUG_SPARSE=y
CONFIG_SPLIT_PTLOCK_CPUS=4
CONFIG_RESOURCES_64BIT=y
CONFIG_ZONE_DMA_FLAG=1
CONFIG_BOUNCE=y
CONFIG_VIRT_TO_BUS=y
CONFIG_MTRR=y
CONFIG_EFI=y
# CONFIG_SECCOMP is not set
CONFIG_CC_STACKPROTECTOR_ALL=y
CONFIG_CC_STACKPROTECTOR=y
# CONFIG_HZ_100 is not set
# CONFIG_HZ_250 is not set
# CONFIG_HZ_300 is not set
CONFIG_HZ_1000=y
CONFIG_HZ=1000
CONFIG_SCHED_HRTICK=y
CONFIG_KEXEC=y
# CONFIG_CRASH_DUMP is not set
CONFIG_PHYSICAL_START=0x200000
# CONFIG_RELOCATABLE is not set
CONFIG_PHYSICAL_ALIGN=0x200000
CONFIG_HOTPLUG_CPU=y
CONFIG_COMPAT_VDSO=y
CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y

#
# Power management options
#
CONFIG_PM=y
CONFIG_PM_LEGACY=y
CONFIG_PM_DEBUG=y
# CONFIG_PM_VERBOSE is not set
CONFIG_CAN_PM_TRACE=y
# CONFIG_PM_TRACE_RTC is not set
CONFIG_PM_SLEEP_SMP=y
CONFIG_PM_SLEEP=y
CONFIG_SUSPEND=y
CONFIG_SUSPEND_FREEZER=y
# CONFIG_HIBERNATION is not set
CONFIG_ACPI=y
CONFIG_ACPI_SLEEP=y
CONFIG_ACPI_PROCFS=y
CONFIG_ACPI_PROCFS_POWER=y
CONFIG_ACPI_SYSFS_POWER=y
CONFIG_ACPI_PROC_EVENT=y
CONFIG_ACPI_AC=m
CONFIG_ACPI_BATTERY=m
CONFIG_ACPI_BUTTON=m
CONFIG_ACPI_VIDEO=m
CONFIG_ACPI_FAN=y
# CONFIG_ACPI_DOCK is not set
CONFIG_ACPI_PROCESSOR=y
CONFIG_ACPI_HOTPLUG_CPU=y
CONFIG_ACPI_THERMAL=y
# CONFIG_ACPI_WMI is not set
# CONFIG_ACPI_ASUS is not set
# CONFIG_ACPI_TOSHIBA is not set
# CONFIG_ACPI_CUSTOM_DSDT_INITRD is not set
CONFIG_ACPI_BLACKLIST_YEAR=0
# CONFIG_ACPI_DEBUG is not set
CONFIG_ACPI_EC=y
CONFIG_ACPI_POWER=y
CONFIG_ACPI_SYSTEM=y
CONFIG_X86_PM_TIMER=y
CONFIG_ACPI_CONTAINER=y
CONFIG_ACPI_HOTPLUG_MEMORY=m
CONFIG_ACPI_SBS=m

#
# CPU Frequency scaling
#
CONFIG_CPU_FREQ=y
CONFIG_CPU_FREQ_TABLE=m
CONFIG_CPU_FREQ_DEBUG=y
CONFIG_CPU_FREQ_STAT=m
CONFIG_CPU_FREQ_STAT_DETAILS=y
# CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set
CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE=y
# CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set
CONFIG_CPU_FREQ_GOV_PERFORMANCE=m
CONFIG_CPU_FREQ_GOV_POWERSAVE=m
CONFIG_CPU_FREQ_GOV_USERSPACE=y
CONFIG_CPU_FREQ_GOV_ONDEMAND=m
CONFIG_CPU_FREQ_GOV_CONSERVATIVE=m

#
# CPUFreq processor drivers
#
CONFIG_X86_ACPI_CPUFREQ=m
# CONFIG_X86_POWERNOW_K8 is not set
CONFIG_X86_SPEEDSTEP_CENTRINO=m
# CONFIG_X86_P4_CLOCKMOD is not set

#
# shared options
#
# CONFIG_X86_ACPI_CPUFREQ_PROC_INTF is not set
# CONFIG_X86_SPEEDSTEP_LIB is not set
CONFIG_CPU_IDLE=y
CONFIG_CPU_IDLE_GOV_LADDER=y
CONFIG_CPU_IDLE_GOV_MENU=y

#
# Bus options (PCI etc.)
#
CONFIG_PCI=y
CONFIG_PCI_DIRECT=y
CONFIG_PCI_MMCONFIG=y
CONFIG_PCI_DOMAINS=y
# CONFIG_DMAR is not set
CONFIG_PCIEPORTBUS=y
# CONFIG_HOTPLUG_PCI_PCIE is not set
CONFIG_PCIEAER=y
CONFIG_ARCH_SUPPORTS_MSI=y
CONFIG_PCI_MSI=y
CONFIG_PCI_LEGACY=y
# CONFIG_PCI_DEBUG is not set
CONFIG_HT_IRQ=y
CONFIG_ISA_DMA_API=y
CONFIG_K8_NB=y
# CONFIG_PCCARD is not set
CONFIG_HOTPLUG_PCI=m
CONFIG_HOTPLUG_PCI_FAKE=m
CONFIG_HOTPLUG_PCI_ACPI=m
CONFIG_HOTPLUG_PCI_ACPI_IBM=m
CONFIG_HOTPLUG_PCI_CPCI=y
CONFIG_HOTPLUG_PCI_CPCI_ZT5550=m
CONFIG_HOTPLUG_PCI_CPCI_GENERIC=m
CONFIG_HOTPLUG_PCI_SHPC=m

#
# Executable file formats / Emulations
#
CONFIG_BINFMT_ELF=y
CONFIG_COMPAT_BINFMT_ELF=y
CONFIG_BINFMT_MISC=y
CONFIG_IA32_EMULATION=y
# CONFIG_IA32_AOUT is not set
CONFIG_COMPAT=y
CONFIG_COMPAT_FOR_U64_ALIGNMENT=y
CONFIG_SYSVIPC_COMPAT=y

#
# Networking
#
CONFIG_NET=y

#
# Networking options
#
CONFIG_PACKET=y
CONFIG_PACKET_MMAP=y
CONFIG_UNIX=y
CONFIG_XFRM=y
CONFIG_XFRM_USER=y
CONFIG_XFRM_SUB_POLICY=y
CONFIG_XFRM_MIGRATE=y
CONFIG_XFRM_STATISTICS=y
CONFIG_NET_KEY=m
CONFIG_NET_KEY_MIGRATE=y
CONFIG_INET=y
# CONFIG_IP_MULTICAST is not set
# CONFIG_IP_ADVANCED_ROUTER is not set
CONFIG_IP_FIB_HASH=y
# CONFIG_IP_PNP is not set
# CONFIG_NET_IPIP is not set
# CONFIG_NET_IPGRE is not set
# CONFIG_ARPD is not set
# CONFIG_SYN_COOKIES is not set
# CONFIG_INET_AH is not set
# CONFIG_INET_ESP is not set
# CONFIG_INET_IPCOMP is not set
# CONFIG_INET_XFRM_TUNNEL is not set
# CONFIG_INET_TUNNEL is not set
# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
# CONFIG_INET_XFRM_MODE_TUNNEL is not set
# CONFIG_INET_XFRM_MODE_BEET is not set
# CONFIG_INET_LRO is not set
CONFIG_INET_DIAG=m
CONFIG_INET_TCP_DIAG=m
# CONFIG_TCP_CONG_ADVANCED is not set
CONFIG_TCP_CONG_CUBIC=y
CONFIG_DEFAULT_TCP_CONG="cubic"
# CONFIG_TCP_MD5SIG is not set
# CONFIG_IPV6 is not set
# CONFIG_INET6_XFRM_TUNNEL is not set
# CONFIG_INET6_TUNNEL is not set
# CONFIG_NETLABEL is not set
CONFIG_NETWORK_SECMARK=y
# CONFIG_NETFILTER is not set
# CONFIG_IP_DCCP is not set
# CONFIG_IP_SCTP is not set
# CONFIG_TIPC is not set
# CONFIG_ATM is not set
# CONFIG_BRIDGE is not set
# CONFIG_VLAN_8021Q is not set
# CONFIG_DECNET is not set
# CONFIG_LLC2 is not set
# CONFIG_IPX is not set
# CONFIG_ATALK is not set
# CONFIG_X25 is not set
# CONFIG_LAPB is not set
# CONFIG_ECONET is not set
# CONFIG_WAN_ROUTER is not set
# CONFIG_NET_SCHED is not set

#
# Network testing
#
# CONFIG_NET_PKTGEN is not set
# CONFIG_HAMRADIO is not set
# CONFIG_CAN is not set
# CONFIG_IRDA is not set
# CONFIG_BT is not set
# CONFIG_AF_RXRPC is not set

#
# Wireless
#
# CONFIG_CFG80211 is not set
# CONFIG_WIRELESS_EXT is not set
# CONFIG_MAC80211 is not set
# CONFIG_IEEE80211 is not set
# CONFIG_RFKILL is not set
# CONFIG_NET_9P is not set

#
# Device Drivers
#

#
# Generic Driver Options
#
CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
CONFIG_STANDALONE=y
CONFIG_PREVENT_FIRMWARE_BUILD=y
CONFIG_FW_LOADER=y
# CONFIG_DEBUG_DRIVER is not set
CONFIG_DEBUG_DEVRES=y
# CONFIG_SYS_HYPERVISOR is not set
# CONFIG_CONNECTOR is not set
# CONFIG_MTD is not set
# CONFIG_PARPORT is not set
CONFIG_PNP=y
# CONFIG_PNP_DEBUG is not set

#
# Protocols
#
CONFIG_PNPACPI=y
CONFIG_BLK_DEV=y
# CONFIG_BLK_DEV_FD is not set
# CONFIG_BLK_CPQ_DA is not set
# CONFIG_BLK_CPQ_CISS_DA is not set
# CONFIG_BLK_DEV_DAC960 is not set
# CONFIG_BLK_DEV_UMEM is not set
# CONFIG_BLK_DEV_COW_COMMON is not set
CONFIG_BLK_DEV_LOOP=m
# CONFIG_BLK_DEV_CRYPTOLOOP is not set
CONFIG_BLK_DEV_NBD=m
# CONFIG_BLK_DEV_SX8 is not set
CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_COUNT=16
CONFIG_BLK_DEV_RAM_SIZE=16384
CONFIG_BLK_DEV_XIP=y
# CONFIG_CDROM_PKTCDVD is not set
CONFIG_ATA_OVER_ETH=m
# CONFIG_MISC_DEVICES is not set
CONFIG_HAVE_IDE=y
# CONFIG_IDE is not set

#
# SCSI device support
#
CONFIG_RAID_ATTRS=m
CONFIG_SCSI=y
CONFIG_SCSI_DMA=y
CONFIG_SCSI_TGT=y
# CONFIG_SCSI_NETLINK is not set
CONFIG_SCSI_PROC_FS=y

#
# SCSI support type (disk, tape, CD-ROM)
#
CONFIG_BLK_DEV_SD=y
# CONFIG_CHR_DEV_ST is not set
# CONFIG_CHR_DEV_OSST is not set
# CONFIG_BLK_DEV_SR is not set
CONFIG_CHR_DEV_SG=y
# CONFIG_CHR_DEV_SCH is not set

#
# Some SCSI devices (e.g. CD jukebox) support multiple LUNs
#
CONFIG_SCSI_MULTI_LUN=y
CONFIG_SCSI_CONSTANTS=y
CONFIG_SCSI_LOGGING=y
CONFIG_SCSI_SCAN_ASYNC=y
CONFIG_SCSI_WAIT_SCAN=m

#
# SCSI Transports
#
# CONFIG_SCSI_SPI_ATTRS is not set
# CONFIG_SCSI_FC_ATTRS is not set
# CONFIG_SCSI_ISCSI_ATTRS is not set
# CONFIG_SCSI_SAS_LIBSAS is not set
# CONFIG_SCSI_SRP_ATTRS is not set
# CONFIG_SCSI_LOWLEVEL is not set
CONFIG_ATA=y
# CONFIG_ATA_NONSTANDARD is not set
CONFIG_ATA_ACPI=y
CONFIG_SATA_AHCI=y
# CONFIG_SATA_SVW is not set
CONFIG_ATA_PIIX=y
CONFIG_SATA_MV=m
# CONFIG_SATA_NV is not set
# CONFIG_PDC_ADMA is not set
# CONFIG_SATA_QSTOR is not set
# CONFIG_SATA_PROMISE is not set
# CONFIG_SATA_SX4 is not set
# CONFIG_SATA_SIL is not set
# CONFIG_SATA_SIL24 is not set
# CONFIG_SATA_SIS is not set
# CONFIG_SATA_ULI is not set
# CONFIG_SATA_VIA is not set
# CONFIG_SATA_VITESSE is not set
# CONFIG_SATA_INIC162X is not set
CONFIG_PATA_ACPI=m
# CONFIG_PATA_ALI is not set
# CONFIG_PATA_AMD is not set
# CONFIG_PATA_ARTOP is not set
# CONFIG_PATA_ATIIXP is not set
# CONFIG_PATA_CMD640_PCI is not set
# CONFIG_PATA_CMD64X is not set
# CONFIG_PATA_CS5520 is not set
# CONFIG_PATA_CS5530 is not set
# CONFIG_PATA_CYPRESS is not set
# CONFIG_PATA_EFAR is not set
CONFIG_ATA_GENERIC=y
# CONFIG_PATA_HPT366 is not set
# CONFIG_PATA_HPT37X is not set
# CONFIG_PATA_HPT3X2N is not set
# CONFIG_PATA_HPT3X3 is not set
# CONFIG_PATA_IT821X is not set
# CONFIG_PATA_IT8213 is not set
# CONFIG_PATA_JMICRON is not set
# CONFIG_PATA_TRIFLEX is not set
CONFIG_PATA_MARVELL=y
CONFIG_PATA_MPIIX=y
CONFIG_PATA_OLDPIIX=y
# CONFIG_PATA_NETCELL is not set
# CONFIG_PATA_NINJA32 is not set
# CONFIG_PATA_NS87410 is not set
# CONFIG_PATA_NS87415 is not set
# CONFIG_PATA_OPTI is not set
# CONFIG_PATA_OPTIDMA is not set
# CONFIG_PATA_PDC_OLD is not set
# CONFIG_PATA_RADISYS is not set
# CONFIG_PATA_RZ1000 is not set
# CONFIG_PATA_SC1200 is not set
# CONFIG_PATA_SERVERWORKS is not set
# CONFIG_PATA_PDC2027X is not set
# CONFIG_PATA_SIL680 is not set
# CONFIG_PATA_SIS is not set
# CONFIG_PATA_VIA is not set
# CONFIG_PATA_WINBOND is not set
CONFIG_MD=y
CONFIG_BLK_DEV_MD=y
CONFIG_MD_LINEAR=y
CONFIG_MD_RAID0=y
CONFIG_MD_RAID1=y
CONFIG_MD_RAID10=y
CONFIG_MD_RAID456=y
CONFIG_MD_RAID5_RESHAPE=y
CONFIG_MD_MULTIPATH=y
# CONFIG_MD_FAULTY is not set
CONFIG_BLK_DEV_DM=y
CONFIG_DM_DEBUG=y
CONFIG_DM_CRYPT=m
CONFIG_DM_SNAPSHOT=m
CONFIG_DM_MIRROR=m
CONFIG_DM_ZERO=y
CONFIG_DM_MULTIPATH=m
# CONFIG_DM_MULTIPATH_EMC is not set
# CONFIG_DM_MULTIPATH_RDAC is not set
# CONFIG_DM_MULTIPATH_HP is not set
CONFIG_DM_DELAY=m
# CONFIG_DM_UEVENT is not set
# CONFIG_FUSION is not set

#
# IEEE 1394 (FireWire) support
#
# CONFIG_FIREWIRE is not set
# CONFIG_IEEE1394 is not set
# CONFIG_I2O is not set
# CONFIG_MACINTOSH_DRIVERS is not set
CONFIG_NETDEVICES=y
# CONFIG_NETDEVICES_MULTIQUEUE is not set
# CONFIG_DUMMY is not set
# CONFIG_BONDING is not set
# CONFIG_MACVLAN is not set
# CONFIG_EQUALIZER is not set
CONFIG_TUN=m
# CONFIG_VETH is not set
# CONFIG_NET_SB1000 is not set
# CONFIG_ARCNET is not set
# CONFIG_NET_ETHERNET is not set
CONFIG_NETDEV_1000=y
# CONFIG_ACENIC is not set
# CONFIG_DL2K is not set
CONFIG_E1000=m
CONFIG_E1000_NAPI=y
# CONFIG_E1000_DISABLE_PACKET_SPLIT is not set
CONFIG_E1000E=m
CONFIG_E1000E_ENABLED=y
# CONFIG_IP1000 is not set
CONFIG_IGB=m
# CONFIG_NS83820 is not set
# CONFIG_HAMACHI is not set
# CONFIG_YELLOWFIN is not set
# CONFIG_R8169 is not set
# CONFIG_SIS190 is not set
# CONFIG_SKGE is not set
# CONFIG_SKY2 is not set
# CONFIG_SK98LIN is not set
# CONFIG_VIA_VELOCITY is not set
# CONFIG_TIGON3 is not set
# CONFIG_BNX2 is not set
# CONFIG_QLA3XXX is not set
# CONFIG_ATL1 is not set
# CONFIG_NETDEV_10000 is not set
# CONFIG_TR is not set

#
# Wireless LAN
#
# CONFIG_WLAN_PRE80211 is not set
# CONFIG_WLAN_80211 is not set
# CONFIG_WAN is not set
# CONFIG_FDDI is not set
# CONFIG_HIPPI is not set
# CONFIG_PPP is not set
# CONFIG_SLIP is not set
# CONFIG_NET_FC is not set
# CONFIG_NETCONSOLE is not set
# CONFIG_NETPOLL is not set
# CONFIG_NET_POLL_CONTROLLER is not set
# CONFIG_ISDN is not set
# CONFIG_PHONE is not set

#
# Input device support
#
CONFIG_INPUT=y
# CONFIG_INPUT_FF_MEMLESS is not set
# CONFIG_INPUT_POLLDEV is not set

#
# Userland interfaces
#
CONFIG_INPUT_MOUSEDEV=y
# CONFIG_INPUT_MOUSEDEV_PSAUX is not set
CONFIG_INPUT_MOUSEDEV_SCREEN_X=1024
CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768
# CONFIG_INPUT_JOYDEV is not set
CONFIG_INPUT_EVDEV=y
# CONFIG_INPUT_EVBUG is not set

#
# Input Device Drivers
#
CONFIG_INPUT_KEYBOARD=y
CONFIG_KEYBOARD_ATKBD=y
# CONFIG_KEYBOARD_SUNKBD is not set
# CONFIG_KEYBOARD_LKKBD is not set
# CONFIG_KEYBOARD_XTKBD is not set
# CONFIG_KEYBOARD_NEWTON is not set
# CONFIG_KEYBOARD_STOWAWAY is not set
CONFIG_INPUT_MOUSE=y
CONFIG_MOUSE_PS2=y
CONFIG_MOUSE_PS2_ALPS=y
CONFIG_MOUSE_PS2_LOGIPS2PP=y
CONFIG_MOUSE_PS2_SYNAPTICS=y
CONFIG_MOUSE_PS2_LIFEBOOK=y
CONFIG_MOUSE_PS2_TRACKPOINT=y
# CONFIG_MOUSE_PS2_TOUCHKIT is not set
# CONFIG_MOUSE_SERIAL is not set
# CONFIG_MOUSE_VSXXXAA is not set
# CONFIG_INPUT_JOYSTICK is not set
# CONFIG_INPUT_TABLET is not set
# CONFIG_INPUT_TOUCHSCREEN is not set
# CONFIG_INPUT_MISC is not set

#
# Hardware I/O ports
#
CONFIG_SERIO=y
CONFIG_SERIO_I8042=y
CONFIG_SERIO_SERPORT=y
# CONFIG_SERIO_CT82C710 is not set
# CONFIG_SERIO_PCIPS2 is not set
CONFIG_SERIO_LIBPS2=y
CONFIG_SERIO_RAW=m
# CONFIG_GAMEPORT is not set

#
# Character devices
#
CONFIG_VT=y
CONFIG_VT_CONSOLE=y
CONFIG_HW_CONSOLE=y
CONFIG_VT_HW_CONSOLE_BINDING=y
# CONFIG_SERIAL_NONSTANDARD is not set
# CONFIG_NOZOMI is not set

#
# Serial drivers
#
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_FIX_EARLYCON_MEM=y
CONFIG_SERIAL_8250_PCI=y
CONFIG_SERIAL_8250_PNP=y
CONFIG_SERIAL_8250_NR_UARTS=32
CONFIG_SERIAL_8250_RUNTIME_UARTS=4
CONFIG_SERIAL_8250_EXTENDED=y
CONFIG_SERIAL_8250_MANY_PORTS=y
CONFIG_SERIAL_8250_SHARE_IRQ=y
CONFIG_SERIAL_8250_DETECT_IRQ=y
# CONFIG_SERIAL_8250_RSA is not set

#
# Non-8250 serial port support
#
CONFIG_SERIAL_CORE=y
CONFIG_SERIAL_CORE_CONSOLE=y
# CONFIG_SERIAL_JSM is not set
CONFIG_UNIX98_PTYS=y
# CONFIG_LEGACY_PTYS is not set
# CONFIG_IPMI_HANDLER is not set
# CONFIG_HW_RANDOM is not set
# CONFIG_NVRAM is not set
# CONFIG_RTC is not set
# CONFIG_GEN_RTC is not set
# CONFIG_R3964 is not set
# CONFIG_APPLICOM is not set
# CONFIG_MWAVE is not set
# CONFIG_PC8736x_GPIO is not set
# CONFIG_RAW_DRIVER is not set
CONFIG_HPET=y
# CONFIG_HPET_RTC_IRQ is not set
CONFIG_HPET_MMAP=y
CONFIG_HANGCHECK_TIMER=m
# CONFIG_TCG_TPM is not set
# CONFIG_TELCLOCK is not set
CONFIG_DEVPORT=y
# CONFIG_I2C is not set

#
# SPI support
#
# CONFIG_SPI is not set
# CONFIG_SPI_MASTER is not set
# CONFIG_W1 is not set
CONFIG_POWER_SUPPLY=y
# CONFIG_POWER_SUPPLY_DEBUG is not set
# CONFIG_PDA_POWER is not set
# CONFIG_BATTERY_DS2760 is not set
# CONFIG_HWMON is not set
CONFIG_THERMAL=y
# CONFIG_WATCHDOG is not set

#
# Sonics Silicon Backplane
#
CONFIG_SSB_POSSIBLE=y
# CONFIG_SSB is not set

#
# Multifunction device drivers
#
# CONFIG_MFD_SM501 is not set

#
# Multimedia devices
#
# CONFIG_VIDEO_DEV is not set
# CONFIG_DVB_CORE is not set
# CONFIG_DAB is not set

#
# Graphics support
#
CONFIG_AGP=y
CONFIG_AGP_AMD64=y
CONFIG_AGP_INTEL=y
# CONFIG_AGP_SIS is not set
# CONFIG_AGP_VIA is not set
# CONFIG_DRM is not set
# CONFIG_VGASTATE is not set
CONFIG_VIDEO_OUTPUT_CONTROL=m
# CONFIG_FB is not set
CONFIG_BACKLIGHT_LCD_SUPPORT=y
CONFIG_LCD_CLASS_DEVICE=m
CONFIG_BACKLIGHT_CLASS_DEVICE=y
# CONFIG_BACKLIGHT_CORGI is not set
# CONFIG_BACKLIGHT_PROGEAR is not set

#
# Display device support
#
# CONFIG_DISPLAY_SUPPORT is not set

#
# Console display driver support
#
CONFIG_VGA_CONSOLE=y
CONFIG_VGACON_SOFT_SCROLLBACK=y
CONFIG_VGACON_SOFT_SCROLLBACK_SIZE=64
CONFIG_VIDEO_SELECT=y
CONFIG_DUMMY_CONSOLE=y

#
# Sound
#
# CONFIG_SOUND is not set
# CONFIG_HID_SUPPORT is not set
# CONFIG_USB_SUPPORT is not set
# CONFIG_MMC is not set
# CONFIG_MEMSTICK is not set
# CONFIG_NEW_LEDS is not set
# CONFIG_INFINIBAND is not set
# CONFIG_EDAC is not set
# CONFIG_RTC_CLASS is not set
# CONFIG_DMADEVICES is not set

#
# Userspace I/O
#
# CONFIG_UIO is not set

#
# Firmware Drivers
#
CONFIG_EDD=m
CONFIG_EFI_VARS=m
# CONFIG_DELL_RBU is not set
# CONFIG_DCDBAS is not set
CONFIG_DMIID=y

#
# File systems
#
# CONFIG_EXT2_FS is not set
CONFIG_EXT3_FS=y
CONFIG_EXT3_FS_XATTR=y
CONFIG_EXT3_FS_POSIX_ACL=y
CONFIG_EXT3_FS_SECURITY=y
# CONFIG_EXT4DEV_FS is not set
CONFIG_JBD=y
# CONFIG_JBD_DEBUG is not set
CONFIG_FS_MBCACHE=y
# CONFIG_REISERFS_FS is not set
# CONFIG_JFS_FS is not set
CONFIG_FS_POSIX_ACL=y
# CONFIG_XFS_FS is not set
# CONFIG_GFS2_FS is not set
# CONFIG_OCFS2_FS is not set
CONFIG_DNOTIFY=y
CONFIG_INOTIFY=y
CONFIG_INOTIFY_USER=y
# CONFIG_QUOTA is not set
# CONFIG_AUTOFS_FS is not set
# CONFIG_AUTOFS4_FS is not set
# CONFIG_FUSE_FS is not set
CONFIG_GENERIC_ACL=y

#
# CD-ROM/DVD Filesystems
#
# CONFIG_ISO9660_FS is not set
# CONFIG_UDF_FS is not set

#
# DOS/FAT/NT Filesystems
#
# CONFIG_MSDOS_FS is not set
# CONFIG_VFAT_FS is not set
# CONFIG_NTFS_FS is not set

#
# Pseudo filesystems
#
CONFIG_PROC_FS=y
CONFIG_PROC_KCORE=y
CONFIG_PROC_SYSCTL=y
CONFIG_SYSFS=y
CONFIG_TMPFS=y
CONFIG_TMPFS_POSIX_ACL=y
CONFIG_HUGETLBFS=y
CONFIG_HUGETLB_PAGE=y
CONFIG_CONFIGFS_FS=m

#
# Miscellaneous filesystems
#
# CONFIG_ADFS_FS is not set
# CONFIG_AFFS_FS is not set
# CONFIG_ECRYPT_FS is not set
# CONFIG_HFS_FS is not set
# CONFIG_HFSPLUS_FS is not set
# CONFIG_BEFS_FS is not set
# CONFIG_BFS_FS is not set
# CONFIG_EFS_FS is not set
# CONFIG_CRAMFS is not set
# CONFIG_VXFS_FS is not set
# CONFIG_MINIX_FS is not set
# CONFIG_HPFS_FS is not set
# CONFIG_QNX4FS_FS is not set
CONFIG_ROMFS_FS=m
# CONFIG_SYSV_FS is not set
# CONFIG_UFS_FS is not set
# CONFIG_NETWORK_FILESYSTEMS is not set

#
# Partition Types
#
CONFIG_PARTITION_ADVANCED=y
# CONFIG_ACORN_PARTITION is not set
# CONFIG_OSF_PARTITION is not set
# CONFIG_AMIGA_PARTITION is not set
# CONFIG_ATARI_PARTITION is not set
# CONFIG_MAC_PARTITION is not set
CONFIG_MSDOS_PARTITION=y
# CONFIG_BSD_DISKLABEL is not set
# CONFIG_MINIX_SUBPARTITION is not set
# CONFIG_SOLARIS_X86_PARTITION is not set
# CONFIG_UNIXWARE_DISKLABEL is not set
# CONFIG_LDM_PARTITION is not set
# CONFIG_SGI_PARTITION is not set
# CONFIG_ULTRIX_PARTITION is not set
# CONFIG_SUN_PARTITION is not set
# CONFIG_KARMA_PARTITION is not set
CONFIG_EFI_PARTITION=y
# CONFIG_SYSV68_PARTITION is not set
CONFIG_NLS=y
CONFIG_NLS_DEFAULT="utf8"
CONFIG_NLS_CODEPAGE_437=y
# CONFIG_NLS_CODEPAGE_737 is not set
# CONFIG_NLS_CODEPAGE_775 is not set
# CONFIG_NLS_CODEPAGE_850 is not set
# CONFIG_NLS_CODEPAGE_852 is not set
# CONFIG_NLS_CODEPAGE_855 is not set
# CONFIG_NLS_CODEPAGE_857 is not set
# CONFIG_NLS_CODEPAGE_860 is not set
# CONFIG_NLS_CODEPAGE_861 is not set
# CONFIG_NLS_CODEPAGE_862 is not set
# CONFIG_NLS_CODEPAGE_863 is not set
# CONFIG_NLS_CODEPAGE_864 is not set
# CONFIG_NLS_CODEPAGE_865 is not set
# CONFIG_NLS_CODEPAGE_866 is not set
# CONFIG_NLS_CODEPAGE_869 is not set
# CONFIG_NLS_CODEPAGE_936 is not set
# CONFIG_NLS_CODEPAGE_950 is not set
# CONFIG_NLS_CODEPAGE_932 is not set
# CONFIG_NLS_CODEPAGE_949 is not set
# CONFIG_NLS_CODEPAGE_874 is not set
# CONFIG_NLS_ISO8859_8 is not set
# CONFIG_NLS_CODEPAGE_1250 is not set
# CONFIG_NLS_CODEPAGE_1251 is not set
CONFIG_NLS_ASCII=y
CONFIG_NLS_ISO8859_1=m
# CONFIG_NLS_ISO8859_2 is not set
# CONFIG_NLS_ISO8859_3 is not set
# CONFIG_NLS_ISO8859_4 is not set
# CONFIG_NLS_ISO8859_5 is not set
# CONFIG_NLS_ISO8859_6 is not set
# CONFIG_NLS_ISO8859_7 is not set
# CONFIG_NLS_ISO8859_9 is not set
# CONFIG_NLS_ISO8859_13 is not set
# CONFIG_NLS_ISO8859_14 is not set
# CONFIG_NLS_ISO8859_15 is not set
# CONFIG_NLS_KOI8_R is not set
# CONFIG_NLS_KOI8_U is not set
CONFIG_NLS_UTF8=m
# CONFIG_DLM is not set

#
# Kernel hacking
#
CONFIG_TRACE_IRQFLAGS_SUPPORT=y
CONFIG_PRINTK_TIME=y
CONFIG_ENABLE_WARN_DEPRECATED=y
CONFIG_ENABLE_MUST_CHECK=y
CONFIG_MAGIC_SYSRQ=y
# CONFIG_UNUSED_SYMBOLS is not set
CONFIG_DEBUG_FS=y
CONFIG_HEADERS_CHECK=y
CONFIG_DEBUG_KERNEL=y
CONFIG_DEBUG_SHIRQ=y
CONFIG_DETECT_SOFTLOCKUP=y
CONFIG_SCHED_DEBUG=y
CONFIG_SCHEDSTATS=y
CONFIG_TIMER_STATS=y
CONFIG_DEBUG_SLAB=y
CONFIG_DEBUG_SLAB_LEAK=y
CONFIG_DEBUG_RT_MUTEXES=y
CONFIG_DEBUG_PI_LIST=y
CONFIG_RT_MUTEX_TESTER=y
CONFIG_DEBUG_SPINLOCK=y
CONFIG_DEBUG_MUTEXES=y
CONFIG_DEBUG_LOCK_ALLOC=y
CONFIG_PROVE_LOCKING=y
CONFIG_LOCKDEP=y
# CONFIG_LOCK_STAT is not set
CONFIG_DEBUG_LOCKDEP=y
CONFIG_TRACE_IRQFLAGS=y
CONFIG_DEBUG_SPINLOCK_SLEEP=y
CONFIG_DEBUG_LOCKING_API_SELFTESTS=y
CONFIG_STACKTRACE=y
# CONFIG_DEBUG_KOBJECT is not set
CONFIG_DEBUG_BUGVERBOSE=y
CONFIG_DEBUG_INFO=y
CONFIG_DEBUG_VM=y
CONFIG_DEBUG_LIST=y
# CONFIG_DEBUG_SG is not set
CONFIG_FRAME_POINTER=y
# CONFIG_BOOT_PRINTK_DELAY is not set
# CONFIG_RCU_TORTURE_TEST is not set
# CONFIG_BACKTRACE_SELF_TEST is not set
# CONFIG_FAULT_INJECTION is not set
# CONFIG_LATENCYTOP is not set
# CONFIG_PROVIDE_OHCI1394_DMA_INIT is not set
# CONFIG_SAMPLES is not set
# CONFIG_KGDB is not set
CONFIG_HAVE_ARCH_KGDB=y
CONFIG_NONPROMISC_DEVMEM=y
CONFIG_EARLY_PRINTK=y
CONFIG_DEBUG_STACKOVERFLOW=y
# CONFIG_DEBUG_STACK_USAGE is not set
# CONFIG_DEBUG_PAGEALLOC is not set
# CONFIG_DEBUG_PER_CPU_MAPS is not set
# CONFIG_X86_PTDUMP is not set
CONFIG_DEBUG_RODATA=y
# CONFIG_DIRECT_GBPAGES is not set
# CONFIG_DEBUG_RODATA_TEST is not set
# CONFIG_DEBUG_NX_TEST is not set
CONFIG_X86_MPPARSE=y
# CONFIG_IOMMU_DEBUG is not set
# CONFIG_MMIOTRACE_HOOKS is not set
# CONFIG_MMIOTRACE is not set
CONFIG_IO_DELAY_TYPE_0X80=0
CONFIG_IO_DELAY_TYPE_0XED=1
CONFIG_IO_DELAY_TYPE_UDELAY=2
CONFIG_IO_DELAY_TYPE_NONE=3
# CONFIG_IO_DELAY_0X80 is not set
CONFIG_IO_DELAY_0XED=y
# CONFIG_IO_DELAY_UDELAY is not set
# CONFIG_IO_DELAY_NONE is not set
CONFIG_DEFAULT_IO_DELAY_TYPE=1
# CONFIG_DEBUG_BOOT_PARAMS is not set
CONFIG_CPA_DEBUG=y

#
# Security options
#
CONFIG_KEYS=y
CONFIG_KEYS_DEBUG_PROC_KEYS=y
CONFIG_SECURITY=y
CONFIG_SECURITY_NETWORK=y
CONFIG_SECURITY_NETWORK_XFRM=y
CONFIG_SECURITY_CAPABILITIES=y
CONFIG_SECURITY_FILE_CAPABILITIES=y
CONFIG_SECURITY_DEFAULT_MMAP_MIN_ADDR=65536
CONFIG_SECURITY_SELINUX=y
CONFIG_SECURITY_SELINUX_BOOTPARAM=y
CONFIG_SECURITY_SELINUX_BOOTPARAM_VALUE=1
CONFIG_SECURITY_SELINUX_DISABLE=y
CONFIG_SECURITY_SELINUX_DEVELOP=y
CONFIG_SECURITY_SELINUX_AVC_STATS=y
CONFIG_SECURITY_SELINUX_CHECKREQPROT_VALUE=1
# CONFIG_SECURITY_SELINUX_ENABLE_SECMARK_DEFAULT is not set
CONFIG_SECURITY_SELINUX_POLICYDB_VERSION_MAX=y
CONFIG_SECURITY_SELINUX_POLICYDB_VERSION_MAX_VALUE=22
CONFIG_XOR_BLOCKS=y
CONFIG_ASYNC_CORE=y
CONFIG_ASYNC_MEMCPY=y
CONFIG_ASYNC_XOR=y
CONFIG_CRYPTO=y
CONFIG_CRYPTO_ALGAPI=y
CONFIG_CRYPTO_AEAD=m
CONFIG_CRYPTO_BLKCIPHER=m
CONFIG_CRYPTO_SEQIV=m
CONFIG_CRYPTO_HASH=y
CONFIG_CRYPTO_MANAGER=y
CONFIG_CRYPTO_HMAC=y
# CONFIG_CRYPTO_XCBC is not set
# CONFIG_CRYPTO_NULL is not set
# CONFIG_CRYPTO_MD4 is not set
# CONFIG_CRYPTO_MD5 is not set
# CONFIG_CRYPTO_SHA1 is not set
# CONFIG_CRYPTO_SHA256 is not set
# CONFIG_CRYPTO_SHA512 is not set
# CONFIG_CRYPTO_WP512 is not set
# CONFIG_CRYPTO_TGR192 is not set
# CONFIG_CRYPTO_GF128MUL is not set
# CONFIG_CRYPTO_ECB is not set
CONFIG_CRYPTO_CBC=m
# CONFIG_CRYPTO_PCBC is not set
# CONFIG_CRYPTO_LRW is not set
# CONFIG_CRYPTO_XTS is not set
# CONFIG_CRYPTO_CTR is not set
# CONFIG_CRYPTO_GCM is not set
# CONFIG_CRYPTO_CCM is not set
# CONFIG_CRYPTO_CRYPTD is not set
# CONFIG_CRYPTO_DES is not set
# CONFIG_CRYPTO_FCRYPT is not set
# CONFIG_CRYPTO_BLOWFISH is not set
# CONFIG_CRYPTO_TWOFISH is not set
# CONFIG_CRYPTO_TWOFISH_X86_64 is not set
# CONFIG_CRYPTO_SERPENT is not set
# CONFIG_CRYPTO_AES is not set
# CONFIG_CRYPTO_AES_X86_64 is not set
# CONFIG_CRYPTO_CAST5 is not set
# CONFIG_CRYPTO_CAST6 is not set
# CONFIG_CRYPTO_TEA is not set
# CONFIG_CRYPTO_ARC4 is not set
# CONFIG_CRYPTO_KHAZAD is not set
# CONFIG_CRYPTO_ANUBIS is not set
# CONFIG_CRYPTO_SEED is not set
# CONFIG_CRYPTO_SALSA20 is not set
# CONFIG_CRYPTO_SALSA20_X86_64 is not set
# CONFIG_CRYPTO_DEFLATE is not set
# CONFIG_CRYPTO_MICHAEL_MIC is not set
# CONFIG_CRYPTO_CRC32C is not set
# CONFIG_CRYPTO_CAMELLIA is not set
# CONFIG_CRYPTO_TEST is not set
# CONFIG_CRYPTO_AUTHENC is not set
# CONFIG_CRYPTO_LZO is not set
# CONFIG_CRYPTO_HW is not set
CONFIG_HAVE_KVM=y
# CONFIG_VIRTUALIZATION is not set

#
# Library routines
#
CONFIG_BITREVERSE=y
# CONFIG_CRC_CCITT is not set
# CONFIG_CRC16 is not set
# CONFIG_CRC_ITU_T is not set
CONFIG_CRC32=y
# CONFIG_CRC7 is not set
# CONFIG_LIBCRC32C is not set
CONFIG_PLIST=y
CONFIG_HAS_IOMEM=y
CONFIG_HAS_IOPORT=y
CONFIG_HAS_DMA=y

^ permalink raw reply	[flat|nested] 15+ messages in thread

* Re: Regression [Was: Boot hang with stack protector on x86_64]
  2008-02-22 13:02         ` James Morris
@ 2008-02-22 13:27           ` Ingo Molnar
  2008-02-23  6:18           ` Ingo Molnar
  1 sibling, 0 replies; 15+ messages in thread
From: Ingo Molnar @ 2008-02-22 13:27 UTC (permalink / raw)
  To: James Morris
  Cc: Sam Ravnborg, Linus Torvalds, linux-kernel, Arjan van de Ven,
	Thomas Gleixner, Ingo Molnar, H. Peter Anvin


* James Morris <jmorris@namei.org> wrote:

> > Please send me your full .config and the gcc version you used for 
> > building the failing kernel.
> 
> config attached.

thanks, i'll try that.

> gcc version 4.1.2 20071124 (Red Hat 4.1.2-36)

ok, i have a slightly older one:

  gcc version 4.1.2 20070925 (Red Hat 4.1.2-33)

i'll try to upgrade to your version to make sure we see the same 
regression.

	Ingo

^ permalink raw reply	[flat|nested] 15+ messages in thread

* Re: Regression [Was: Boot hang with stack protector on x86_64]
  2008-02-22 13:02         ` James Morris
  2008-02-22 13:27           ` Ingo Molnar
@ 2008-02-23  6:18           ` Ingo Molnar
  2008-02-23  7:37             ` Ingo Molnar
  1 sibling, 1 reply; 15+ messages in thread
From: Ingo Molnar @ 2008-02-23  6:18 UTC (permalink / raw)
  To: James Morris
  Cc: Sam Ravnborg, Linus Torvalds, linux-kernel, Arjan van de Ven,
	Thomas Gleixner, Ingo Molnar, H. Peter Anvin


James,

could you try the fix below ontop of x86.git#testing, does it solve your 
boot hang?

	Ingo

--------------->
Subject: x86: stackprotector fix: do not zap %gs
From: Ingo Molnar <mingo@elte.hu>
Date: Sat Feb 23 07:06:55 CET 2008

pda_init() puts 0 into %gs - that's wrong because any %gs access will 
fault from now on and we already have a dummy PDA set up that can be 
accessed just fine.

This normally does not matter because almost nothing accesses %gs this 
early ... but the stackprotector now does to read the canary ...

Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 arch/x86/kernel/setup64.c |    2 --
 1 file changed, 2 deletions(-)

Index: linux-x86.q/arch/x86/kernel/setup64.c
===================================================================
--- linux-x86.q.orig/arch/x86/kernel/setup64.c
+++ linux-x86.q/arch/x86/kernel/setup64.c
@@ -165,8 +165,6 @@ void pda_init(int cpu)
 { 
 	struct x8664_pda *pda = cpu_pda(cpu);
 
-	/* Setup up data that may be needed in __get_free_pages early */
-	asm volatile("movl %0,%%fs ; movl %0,%%gs" :: "r" (0)); 
 	/* Memory clobbers used to order PDA accessed */
 	mb();
 	wrmsrl(MSR_GS_BASE, pda);

^ permalink raw reply	[flat|nested] 15+ messages in thread

* Re: Regression [Was: Boot hang with stack protector on x86_64]
  2008-02-23  6:18           ` Ingo Molnar
@ 2008-02-23  7:37             ` Ingo Molnar
  2008-02-24 22:53               ` James Morris
  0 siblings, 1 reply; 15+ messages in thread
From: Ingo Molnar @ 2008-02-23  7:37 UTC (permalink / raw)
  To: James Morris
  Cc: Sam Ravnborg, Linus Torvalds, linux-kernel, Arjan van de Ven,
	Thomas Gleixner, Ingo Molnar, H. Peter Anvin

* Ingo Molnar <mingo@elte.hu> wrote:

> could you try the fix below ontop of x86.git#testing, does it solve 
> your boot hang?

find below another fix that is somewhat better as it does not affect the 
native kernel and !PARAVIRT.

btw., this also explains why this bug wasnt reported sooner against 
x86.git#testing: people done normally use PARAVIRT on 64-bit yet.
(there is no 64-bit host support)

	Ingo

---------------->
Subject: x86: stackprotector & PARAVIRT fix
From: Ingo Molnar <mingo@elte.hu>
Date: Sat Feb 23 07:06:55 CET 2008

on paravirt enabled 64-bit kernels the paravirt ops do function
calls themselves - which is bad with the stackprotector - for
example pda_init() loads 0 into %gs and then does MSR_GS_BASE
write (which modifies gs.base) - but that MSR write is a function
call on paravirt, which with stackprotector tries to read the
stack canary from the PDA ... crashing the bootup.

the solution was suggested by Arjan van de Ven: to exclude paravirt.c
from stackprotector, too many lowlevel functionality is in it. It's
not like we'll have paravirt functions with character arrays on
their stack anyway...

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 arch/x86/kernel/Makefile |    1 +
 1 file changed, 1 insertion(+)

Index: linux-x86.q/arch/x86/kernel/Makefile
===================================================================
--- linux-x86.q.orig/arch/x86/kernel/Makefile
+++ linux-x86.q/arch/x86/kernel/Makefile
@@ -15,6 +15,7 @@ nostackp := $(call cc-option, -fno-stack
 CFLAGS_vsyscall_64.o	:= $(PROFILING) -g0 $(nostackp)
 CFLAGS_hpet.o		:= $(nostackp)
 CFLAGS_tsc_64.o		:= $(nostackp)
+CFLAGS_paravirt.o	:= $(nostackp)

 obj-y			:= process_$(BITS).o signal_$(BITS).o entry_$(BITS).o
 obj-y			+= traps_$(BITS).o irq_$(BITS).o

^ permalink raw reply	[flat|nested] 15+ messages in thread

* Re: Regression [Was: Boot hang with stack protector on x86_64]
  2008-02-23  7:37             ` Ingo Molnar
@ 2008-02-24 22:53               ` James Morris
  2008-02-25  8:23                 ` Ingo Molnar
  0 siblings, 1 reply; 15+ messages in thread
From: James Morris @ 2008-02-24 22:53 UTC (permalink / raw)
  To: Ingo Molnar
  Cc: Sam Ravnborg, Linus Torvalds, linux-kernel, Arjan van de Ven,
	Thomas Gleixner, Ingo Molnar, H. Peter Anvin

On Sat, 23 Feb 2008, Ingo Molnar wrote:

> 
> * Ingo Molnar <mingo@elte.hu> wrote:
> 
> > could you try the fix below ontop of x86.git#testing, does it solve 
> > your boot hang?
> 
> find below another fix that is somewhat better as it does not affect the 
> native kernel and !PARAVIRT.

This works.

> 
> btw., this also explains why this bug wasnt reported sooner against 
> x86.git#testing: people done normally use PARAVIRT on 64-bit yet.
> (there is no 64-bit host support)
> 
> 	Ingo
> 
> ---------------->
> Subject: x86: stackprotector & PARAVIRT fix
> From: Ingo Molnar <mingo@elte.hu>
> Date: Sat Feb 23 07:06:55 CET 2008
> 
> on paravirt enabled 64-bit kernels the paravirt ops do function
> calls themselves - which is bad with the stackprotector - for
> example pda_init() loads 0 into %gs and then does MSR_GS_BASE
> write (which modifies gs.base) - but that MSR write is a function
> call on paravirt, which with stackprotector tries to read the
> stack canary from the PDA ... crashing the bootup.
> 
> the solution was suggested by Arjan van de Ven: to exclude paravirt.c
> from stackprotector, too many lowlevel functionality is in it. It's
> not like we'll have paravirt functions with character arrays on
> their stack anyway...
> 
> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
> Signed-off-by: Ingo Molnar <mingo@elte.hu>
> ---
>  arch/x86/kernel/Makefile |    1 +
>  1 file changed, 1 insertion(+)
> 
> Index: linux-x86.q/arch/x86/kernel/Makefile
> ===================================================================
> --- linux-x86.q.orig/arch/x86/kernel/Makefile
> +++ linux-x86.q/arch/x86/kernel/Makefile
> @@ -15,6 +15,7 @@ nostackp := $(call cc-option, -fno-stack
>  CFLAGS_vsyscall_64.o	:= $(PROFILING) -g0 $(nostackp)
>  CFLAGS_hpet.o		:= $(nostackp)
>  CFLAGS_tsc_64.o		:= $(nostackp)
> +CFLAGS_paravirt.o	:= $(nostackp)
>  
>  obj-y			:= process_$(BITS).o signal_$(BITS).o entry_$(BITS).o
>  obj-y			+= traps_$(BITS).o irq_$(BITS).o
> 

-- 
James Morris
<jmorris@namei.org>

^ permalink raw reply	[flat|nested] 15+ messages in thread

* Re: Regression [Was: Boot hang with stack protector on x86_64]
  2008-02-24 22:53               ` James Morris
@ 2008-02-25  8:23                 ` Ingo Molnar
  0 siblings, 0 replies; 15+ messages in thread
From: Ingo Molnar @ 2008-02-25  8:23 UTC (permalink / raw)
  To: James Morris
  Cc: Sam Ravnborg, Linus Torvalds, linux-kernel, Arjan van de Ven,
	Thomas Gleixner, Ingo Molnar, H. Peter Anvin


* James Morris <jmorris@namei.org> wrote:

> > > could you try the fix below ontop of x86.git#testing, does it 
> > > solve your boot hang?
> > 
> > find below another fix that is somewhat better as it does not affect 
> > the native kernel and !PARAVIRT.
> 
> This works.

thanks. We'll delay the stackprotector fixes for v2.6.26 (it's been 
broken for too long), but if you want to have it you can pick it up from 
x86.git.

	Ingo

^ permalink raw reply	[flat|nested] 15+ messages in thread

* Re: Regression [Was: Boot hang with stack protector on x86_64]
  2008-02-22  7:59 ` Regression [Was: Boot hang with stack protector on x86_64] Sam Ravnborg
  2008-02-22  9:36   ` Ingo Molnar
@ 2008-02-22 15:43   ` Linus Torvalds
  2008-02-22 15:59     ` Arjan van de Ven
  2008-02-22 16:12     ` Sam Ravnborg
  1 sibling, 2 replies; 15+ messages in thread
From: Linus Torvalds @ 2008-02-22 15:43 UTC (permalink / raw)
  To: Sam Ravnborg
  Cc: James Morris, linux-kernel, Arjan van de Ven, Thomas Gleixner,
	Ingo Molnar, H. Peter Anvin



On Fri, 22 Feb 2008, Sam Ravnborg wrote:
>
> This is a regression. Can you please revert this commit.

Not really. The thing is, CONFIG_CC_STACKPROTECTOR has never done anything 
at all, now it does, and it shows that it never worked.

So the commit that made it do something shouldn't be reverted, but 
CONFIG_CC_STACKPROTECTOR should be marked BROKEN, because it obviously is 
broken right now.

But keeping the config option, and just not making it do anything is 
misleading and wrong.

So just something like this? To make sure normal people don't enable it..

			Linus

---
 arch/x86/Kconfig |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 3be2305..4a88cf7 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -1054,7 +1054,7 @@ config SECCOMP
 
 config CC_STACKPROTECTOR
 	bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
-	depends on X86_64 && EXPERIMENTAL
+	depends on X86_64 && EXPERIMENTAL && BROKEN
 	help
          This option turns on the -fstack-protector GCC feature. This
 	  feature puts, at the beginning of critical functions, a canary

^ permalink raw reply related	[flat|nested] 15+ messages in thread

* Re: Regression [Was: Boot hang with stack protector on x86_64]
  2008-02-22 15:43   ` Linus Torvalds
@ 2008-02-22 15:59     ` Arjan van de Ven
  2008-02-22 16:12     ` Sam Ravnborg
  1 sibling, 0 replies; 15+ messages in thread
From: Arjan van de Ven @ 2008-02-22 15:59 UTC (permalink / raw)
  To: Linus Torvalds
  Cc: Sam Ravnborg, James Morris, linux-kernel, Thomas Gleixner,
	Ingo Molnar, H. Peter Anvin

On Fri, 22 Feb 2008 07:43:08 -0800 (PST)
Linus Torvalds <torvalds@linux-foundation.org> wrote:

> 
> 
> On Fri, 22 Feb 2008, Sam Ravnborg wrote:
> >
> > This is a regression. Can you please revert this commit.
> 
> Not really. The thing is, CONFIG_CC_STACKPROTECTOR has never done
> anything at all, now it does, and it shows that it never worked.
> 
> So the commit that made it do something shouldn't be reverted, but 
> CONFIG_CC_STACKPROTECTOR should be marked BROKEN, because it
> obviously is broken right now.
> 
> But keeping the config option, and just not making it do anything is 
> misleading and wrong.
> 
> So just something like this? To make sure normal people don't enable
> it..


looks fair; once the patches to make it work are merged the B0RKEN can
go away again easliy

^ permalink raw reply	[flat|nested] 15+ messages in thread

* Re: Regression [Was: Boot hang with stack protector on x86_64]
  2008-02-22 15:43   ` Linus Torvalds
  2008-02-22 15:59     ` Arjan van de Ven
@ 2008-02-22 16:12     ` Sam Ravnborg
  1 sibling, 0 replies; 15+ messages in thread
From: Sam Ravnborg @ 2008-02-22 16:12 UTC (permalink / raw)
  To: Linus Torvalds
  Cc: James Morris, linux-kernel, Arjan van de Ven, Thomas Gleixner,
	Ingo Molnar, H. Peter Anvin

On Fri, Feb 22, 2008 at 07:43:08AM -0800, Linus Torvalds wrote:
> 
> 
> On Fri, 22 Feb 2008, Sam Ravnborg wrote:
> >
> > This is a regression. Can you please revert this commit.
> 
> Not really. The thing is, CONFIG_CC_STACKPROTECTOR has never done anything 
> at all, now it does, and it shows that it never worked.
And this made a machine non-bootable that could boot before.

> 
> So the commit that made it do something shouldn't be reverted, but 
> CONFIG_CC_STACKPROTECTOR should be marked BROKEN, because it obviously is 
> broken right now.
> 
> But keeping the config option, and just not making it do anything is 
> misleading and wrong.
> 
> So just something like this? To make sure normal people don't enable it..
Whatever is fine with me - I hope Ingo & Co fixes the root cause soon so
we can get the right fix in.

	Sam

^ permalink raw reply	[flat|nested] 15+ messages in thread

end of thread, other threads:[~2008-02-25  8:23 UTC | newest]

Thread overview: 15+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2008-02-22  0:29 Boot hang with stack protector on x86_64 James Morris
2008-02-22  1:14 ` Arjan van de Ven
2008-02-22  7:59 ` Regression [Was: Boot hang with stack protector on x86_64] Sam Ravnborg
2008-02-22  9:36   ` Ingo Molnar
2008-02-22 10:33     ` James Morris
2008-02-22 12:17       ` Ingo Molnar
2008-02-22 13:02         ` James Morris
2008-02-22 13:27           ` Ingo Molnar
2008-02-23  6:18           ` Ingo Molnar
2008-02-23  7:37             ` Ingo Molnar
2008-02-24 22:53               ` James Morris
2008-02-25  8:23                 ` Ingo Molnar
2008-02-22 15:43   ` Linus Torvalds
2008-02-22 15:59     ` Arjan van de Ven
2008-02-22 16:12     ` Sam Ravnborg

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