2.6.28-rc1: EIP: slab_destroy+0x84/0x142

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* 2.6.28-rc1: EIP: slab_destroy+0x84/0x142
       [not found] <alpine.LFD.2.00.0810232028500.3287@nehalem.linux-foundation.org>
@ 2008-10-24 18:59 ` Alexey Dobriyan
  2008-10-24 21:38   ` Matt Mackall
  0 siblings, 1 reply; 13+ messages in thread
From: Alexey Dobriyan @ 2008-10-24 18:59 UTC (permalink / raw)
  To: Linus Torvalds; +Cc: linux-mm, cl, penberg, mpm, akpm

Reproducible under KVM during initscripts:

	debug_check_no_locks_freed
	free_hot_cold_page
	free_hot_page
	put_page
	free_page_and_swap_cache
	unmap_vmas
	exit_mmap
	mmput
	flush_old_exec
	vfs_read
	kernel_read
	load_elf_binary
	search_binary_handler
	load_elf_binary
	load_elf_binary
	search_binary_handler
	do_execve
	sys_execve
	syscall_call
--------------------------------
	kmem_cache_free
	file_free_rcu
	__rcu_process_callbacks
	__do_softirq
	do_softirq
	irq_exit
	do_IRQ
	common_interrupt
	kvm_leave_lazy_mmu
	copy_page_range
	dup_mm
	copy_process
	do_fork
	trace_hardirqs_on
	copy_to_user
	trace_hardirqs_on_thunk
	sys_clone
	syscall_call

EIP: slab_destroy+0x84/0x142

mm/slab.c:1924

  1904	#if DEBUG
  1905	static void slab_destroy_debugcheck(struct kmem_cache *cachep, struct slab *slabp)
  1906	{
  1907		int i;
  1908		for (i = 0; i < cachep->num; i++) {
  1909			void *objp = index_to_obj(cachep, slabp, i);
  1910	
  1911			if (cachep->flags & SLAB_POISON) {
  1912	#ifdef CONFIG_DEBUG_PAGEALLOC
  1913				if (cachep->buffer_size % PAGE_SIZE == 0 &&
  1914						OFF_SLAB(cachep))
  1915					kernel_map_pages(virt_to_page(objp),
  1916						cachep->buffer_size / PAGE_SIZE, 1);
  1917				else
  1918					check_poison_obj(cachep, objp);
  1919	#else
  1920				check_poison_obj(cachep, objp);
  1921	#endif
  1922			}
  1923			if (cachep->flags & SLAB_RED_ZONE) {
  1924		===>		if (*dbg_redzone1(cachep, objp) != RED_INACTIVE)	<===
  1925					slab_error(cachep, "start of a freed object "
  1926						   "was overwritten");
  1927				if (*dbg_redzone2(cachep, objp) != RED_INACTIVE)
  1928					slab_error(cachep, "end of a freed object "
  1929						   "was overwritten");
  1930			}
  1931		}
  1932	}
  1933	#else
 

c015693a <slab_destroy>:
c015693a:	55                   	push   %ebp
c015693b:	89 e5                	mov    %esp,%ebp
c015693d:	57                   	push   %edi
c015693e:	56                   	push   %esi
c015693f:	53                   	push   %ebx
c0156940:	89 c3                	mov    %eax,%ebx
c0156942:	83 ec 14             	sub    $0x14,%esp
c0156945:	89 55 e0             	mov    %edx,-0x20(%ebp)
c0156948:	8b 42 0c             	mov    0xc(%edx),%eax
c015694b:	89 45 e4             	mov    %eax,-0x1c(%ebp)
c015694e:	8b 52 08             	mov    0x8(%edx),%edx
c0156951:	c7 45 ec 00 00 00 00 	movl   $0x0,-0x14(%ebp)
c0156958:	89 55 e8             	mov    %edx,-0x18(%ebp)
c015695b:	e9 c8 00 00 00       	jmp    c0156a28 <slab_destroy+0xee>
c0156960:	8b 7b 10             	mov    0x10(%ebx),%edi
c0156963:	8b 75 ec             	mov    -0x14(%ebp),%esi
c0156966:	8b 55 e0             	mov    -0x20(%ebp),%edx
c0156969:	0f af f7             	imul   %edi,%esi
c015696c:	03 72 0c             	add    0xc(%edx),%esi
c015696f:	f6 c4 08             	test   $0x8,%ah
c0156972:	74 3e                	je     c01569b2 <slab_destroy+0x78>
c0156974:	f7 c7 ff 0f 00 00    	test   $0xfff,%edi
c015697a:	75 2d                	jne    c01569a9 <slab_destroy+0x6f>
c015697c:	85 c0                	test   %eax,%eax
c015697e:	79 29                	jns    c01569a9 <slab_destroy+0x6f>
c0156980:	a1 00 36 6f c0       	mov    0xc06f3600,%eax
c0156985:	c1 ef 0c             	shr    $0xc,%edi
c0156988:	89 45 f0             	mov    %eax,-0x10(%ebp)
c015698b:	89 f0                	mov    %esi,%eax
c015698d:	e8 26 ae fb ff       	call   c01117b8 <__phys_addr>
c0156992:	b9 01 00 00 00       	mov    $0x1,%ecx
c0156997:	89 fa                	mov    %edi,%edx
c0156999:	c1 e8 0c             	shr    $0xc,%eax
c015699c:	c1 e0 05             	shl    $0x5,%eax
c015699f:	03 45 f0             	add    -0x10(%ebp),%eax
c01569a2:	e8 12 bb fb ff       	call   c01124b9 <kernel_map_pages>
c01569a7:	eb 09                	jmp    c01569b2 <slab_destroy+0x78>
c01569a9:	89 f2                	mov    %esi,%edx
c01569ab:	89 d8                	mov    %ebx,%eax
c01569ad:	e8 fd f2 ff ff       	call   c0155caf <check_poison_obj>
c01569b2:	f6 43 19 04          	testb  $0x4,0x19(%ebx)
c01569b6:	74 6d                	je     c0156a25 <slab_destroy+0xeb>
c01569b8:	8b 83 84 00 00 00    	mov    0x84(%ebx),%eax
c01569be: ===>	81 7c 06 fc 02 11 f9 	cmpl   $0x9f91102,-0x4(%esi,%eax,1)	<===
c01569c5:	09 
c01569c6:	75 0a                	jne    c01569d2 <slab_destroy+0x98>
c01569c8:	81 7c 06 f8 5b e3 74 	cmpl   $0x9d74e35b,-0x8(%esi,%eax,1)
c01569cf:	9d 
c01569d0:	74 11                	je     c01569e3 <slab_destroy+0xa9>
c01569d2:	b9 82 f4 2d c0       	mov    $0xc02df482,%ecx
c01569d7:	89 da                	mov    %ebx,%edx
c01569d9:	b8 8c ae 28 c0       	mov    $0xc028ae8c,%eax
c01569de:	e8 29 f4 ff ff       	call   c0155e0c <__slab_error>
c01569e3:	8b 43 18             	mov    0x18(%ebx),%eax
c01569e6:	f6 c4 04             	test   $0x4,%ah
c01569e9:	75 04                	jne    c01569ef <slab_destroy+0xb5>
c01569eb:	0f 0b                	ud2a   
c01569ed:	eb fe                	jmp    c01569ed <slab_destroy+0xb3>
c01569ef:	a9 00 00 01 00       	test   $0x10000,%eax
c01569f4:	8b 43 10             	mov    0x10(%ebx),%eax
c01569f7:	74 06                	je     c01569ff <slab_destroy+0xc5>
c01569f9:	8d 44 06 f0          	lea    -0x10(%esi,%eax,1),%eax
c01569fd:	eb 04                	jmp    c0156a03 <slab_destroy+0xc9>
c01569ff:	8d 44 06 f8          	lea    -0x8(%esi,%eax,1),%eax
c0156a03:	81 78 04 02 11 f9 09 	cmpl   $0x9f91102,0x4(%eax)
c0156a0a:	75 08                	jne    c0156a14 <slab_destroy+0xda>
c0156a0c:	81 38 5b e3 74 9d    	cmpl   $0x9d74e35b,(%eax)
c0156a12:	74 11                	je     c0156a25 <slab_destroy+0xeb>
c0156a14:	b9 aa f4 2d c0       	mov    $0xc02df4aa,%ecx
c0156a19:	89 da                	mov    %ebx,%edx
c0156a1b:	b8 8c ae 28 c0       	mov    $0xc028ae8c,%eax
c0156a20:	e8 e7 f3 ff ff       	call   c0155e0c <__slab_error>
c0156a25:	ff 45 ec             	incl   -0x14(%ebp)
c0156a28:	8b 55 ec             	mov    -0x14(%ebp),%edx
c0156a2b:	3b 53 1c             	cmp    0x1c(%ebx),%edx
c0156a2e:	8b 43 18             	mov    0x18(%ebx),%eax
c0156a31:	0f 82 29 ff ff ff    	jb     c0156960 <slab_destroy+0x26>
c0156a37:	8b 55 e4             	mov    -0x1c(%ebp),%edx
c0156a3a:	2b 55 e8             	sub    -0x18(%ebp),%edx
c0156a3d:	a9 00 00 08 00       	test   $0x80000,%eax
c0156a42:	74 18                	je     c0156a5c <slab_destroy+0x122>
c0156a44:	8b 45 e0             	mov    -0x20(%ebp),%eax
c0156a47:	89 58 08             	mov    %ebx,0x8(%eax)
c0156a4a:	89 50 0c             	mov    %edx,0xc(%eax)
c0156a4d:	8b 45 e0             	mov    -0x20(%ebp),%eax
c0156a50:	ba b5 6d 15 c0       	mov    $0xc0156db5,%edx
c0156a55:	e8 76 30 fe ff       	call   c0139ad0 <call_rcu>
c0156a5a:	eb 18                	jmp    c0156a74 <slab_destroy+0x13a>
c0156a5c:	89 d8                	mov    %ebx,%eax
c0156a5e:	e8 c5 f3 ff ff       	call   c0155e28 <kmem_freepages>
c0156a63:	83 7b 18 00          	cmpl   $0x0,0x18(%ebx)
c0156a67:	79 0b                	jns    c0156a74 <slab_destroy+0x13a>
c0156a69:	8b 43 30             	mov    0x30(%ebx),%eax
c0156a6c:	8b 55 e0             	mov    -0x20(%ebp),%edx
c0156a6f:	e8 01 fe ff ff       	call   c0156875 <kmem_cache_free>
c0156a74:	83 c4 14             	add    $0x14,%esp
c0156a77:	5b                   	pop    %ebx
c0156a78:	5e                   	pop    %esi
c0156a79:	5f                   	pop    %edi
c0156a7a:	5d                   	pop    %ebp
c0156a7b:	c3                   	ret    



#
# Automatically generated make config: don't edit
# Linux kernel version: 2.6.28-rc1
# Fri Oct 24 22:53:31 2008
#
# CONFIG_64BIT is not set
CONFIG_X86_32=y
# CONFIG_X86_64 is not set
CONFIG_X86=y
CONFIG_ARCH_DEFCONFIG="arch/x86/configs/i386_defconfig"
CONFIG_GENERIC_TIME=y
CONFIG_GENERIC_CMOS_UPDATE=y
CONFIG_CLOCKSOURCE_WATCHDOG=y
CONFIG_GENERIC_CLOCKEVENTS=y
CONFIG_LOCKDEP_SUPPORT=y
CONFIG_STACKTRACE_SUPPORT=y
CONFIG_HAVE_LATENCYTOP_SUPPORT=y
CONFIG_FAST_CMPXCHG_LOCAL=y
CONFIG_MMU=y
CONFIG_ZONE_DMA=y
CONFIG_GENERIC_ISA_DMA=y
CONFIG_GENERIC_IOMAP=y
CONFIG_GENERIC_BUG=y
CONFIG_GENERIC_HWEIGHT=y
CONFIG_ARCH_MAY_HAVE_PC_FDC=y
# CONFIG_RWSEM_GENERIC_SPINLOCK is not set
CONFIG_RWSEM_XCHGADD_ALGORITHM=y
CONFIG_ARCH_HAS_CPU_IDLE_WAIT=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
# CONFIG_GENERIC_TIME_VSYSCALL is not set
CONFIG_ARCH_HAS_CPU_RELAX=y
CONFIG_ARCH_HAS_DEFAULT_IDLE=y
CONFIG_ARCH_HAS_CACHE_LINE_SIZE=y
# CONFIG_HAVE_SETUP_PER_CPU_AREA is not set
# CONFIG_HAVE_CPUMASK_OF_CPU_MAP is not set
CONFIG_ARCH_HIBERNATION_POSSIBLE=y
CONFIG_ARCH_SUSPEND_POSSIBLE=y
# CONFIG_ZONE_DMA32 is not set
CONFIG_ARCH_POPULATES_NODE_MAP=y
# CONFIG_AUDIT_ARCH is not set
CONFIG_ARCH_SUPPORTS_OPTIMIZED_INLINING=y
CONFIG_GENERIC_HARDIRQS=y
CONFIG_GENERIC_IRQ_PROBE=y
CONFIG_X86_BIOS_REBOOT=y
CONFIG_KTIME_SCALAR=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"

#
# General setup
#
CONFIG_EXPERIMENTAL=y
CONFIG_BROKEN_ON_SMP=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 is not set
# CONFIG_BSD_PROCESS_ACCT is not set
# CONFIG_TASKSTATS is not set
# CONFIG_AUDIT is not set
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
CONFIG_LOG_BUF_SHIFT=15
# CONFIG_CGROUPS is not set
CONFIG_HAVE_UNSTABLE_SCHED_CLOCK=y
# CONFIG_GROUP_SCHED is not set
# CONFIG_RELAY is not set
CONFIG_NAMESPACES=y
CONFIG_UTS_NS=y
CONFIG_IPC_NS=y
CONFIG_USER_NS=y
CONFIG_PID_NS=y
# CONFIG_BLK_DEV_INITRD is not set
CONFIG_CC_OPTIMIZE_FOR_SIZE=y
CONFIG_SYSCTL=y
CONFIG_EMBEDDED=y
CONFIG_UID16=y
CONFIG_SYSCTL_SYSCALL=y
CONFIG_KALLSYMS=y
CONFIG_KALLSYMS_ALL=y
# CONFIG_KALLSYMS_EXTRA_PASS is not set
CONFIG_HOTPLUG=y
CONFIG_PRINTK=y
CONFIG_BUG=y
CONFIG_ELF_CORE=y
CONFIG_PCSPKR_PLATFORM=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_AIO=y
CONFIG_VM_EVENT_COUNTERS=y
CONFIG_PCI_QUIRKS=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_HAVE_EFFICIENT_UNALIGNED_ACCESS=y
CONFIG_HAVE_IOREMAP_PROT=y
CONFIG_HAVE_KPROBES=y
CONFIG_HAVE_KRETPROBES=y
CONFIG_HAVE_ARCH_TRACEHOOK=y
CONFIG_HAVE_GENERIC_DMA_COHERENT=y
CONFIG_SLABINFO=y
CONFIG_RT_MUTEXES=y
# CONFIG_TINY_SHMEM is not set
CONFIG_BASE_SMALL=0
# CONFIG_MODULES is not set
CONFIG_BLOCK=y
# CONFIG_LBD is not set
# CONFIG_LSF is not set
# CONFIG_BLK_DEV_BSG is not set
# CONFIG_BLK_DEV_INTEGRITY is not set

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

#
# Processor type and features
#
# CONFIG_NO_HZ is not set
# CONFIG_HIGH_RES_TIMERS is not set
CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
# CONFIG_SMP is not set
CONFIG_X86_PC=y
# CONFIG_X86_ELAN is not set
# CONFIG_X86_VOYAGER is not set
# CONFIG_X86_GENERICARCH is not set
# CONFIG_X86_VSMP is not set
# CONFIG_X86_RDC321X is not set
CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER=y
CONFIG_PARAVIRT_GUEST=y
# CONFIG_VMI is not set
CONFIG_KVM_CLOCK=y
CONFIG_KVM_GUEST=y
# CONFIG_LGUEST_GUEST is not set
CONFIG_PARAVIRT=y
CONFIG_PARAVIRT_CLOCK=y
# CONFIG_PARAVIRT_DEBUG is not set
# CONFIG_MEMTEST is not set
# 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=y
# 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_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 is not set
# CONFIG_GENERIC_CPU is not set
# CONFIG_X86_GENERIC is not set
CONFIG_X86_CPU=y
CONFIG_X86_CMPXCHG=y
CONFIG_X86_L1_CACHE_SHIFT=5
CONFIG_X86_XADD=y
CONFIG_X86_PPRO_FENCE=y
CONFIG_X86_WP_WORKS_OK=y
CONFIG_X86_INVLPG=y
CONFIG_X86_BSWAP=y
CONFIG_X86_POPAD_OK=y
CONFIG_X86_USE_PPRO_CHECKSUM=y
CONFIG_X86_TSC=y
CONFIG_X86_CMOV=y
CONFIG_X86_MINIMUM_CPU_FAMILY=4
CONFIG_X86_DEBUGCTLMSR=y
# CONFIG_PROCESSOR_SELECT is not set
CONFIG_CPU_SUP_INTEL=y
CONFIG_CPU_SUP_CYRIX_32=y
CONFIG_CPU_SUP_AMD=y
CONFIG_CPU_SUP_CENTAUR_32=y
CONFIG_CPU_SUP_TRANSMETA_32=y
CONFIG_CPU_SUP_UMC_32=y
CONFIG_X86_DS=y
CONFIG_X86_PTRACE_BTS=y
CONFIG_HPET_TIMER=y
CONFIG_HPET_EMULATE_RTC=y
CONFIG_DMI=y
# CONFIG_IOMMU_HELPER is not set
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
# CONFIG_X86_UP_APIC is not set
CONFIG_X86_MCE=y
CONFIG_X86_MCE_NONFATAL=y
CONFIG_VM86=y
# CONFIG_TOSHIBA is not set
# CONFIG_I8K is not set
# CONFIG_X86_REBOOTFIXUPS is not set
# CONFIG_MICROCODE is not set
# CONFIG_X86_MSR is not set
# CONFIG_X86_CPUID is not set
# CONFIG_NOHIGHMEM is not set
CONFIG_HIGHMEM4G=y
# CONFIG_HIGHMEM64G is not set
CONFIG_VMSPLIT_3G=y
# CONFIG_VMSPLIT_3G_OPT is not set
# CONFIG_VMSPLIT_2G is not set
# CONFIG_VMSPLIT_2G_OPT is not set
# CONFIG_VMSPLIT_1G is not set
CONFIG_PAGE_OFFSET=0xC0000000
CONFIG_HIGHMEM=y
# CONFIG_ARCH_PHYS_ADDR_T_64BIT is not set
CONFIG_ARCH_FLATMEM_ENABLE=y
CONFIG_ARCH_SPARSEMEM_ENABLE=y
CONFIG_ARCH_SELECT_MEMORY_MODEL=y
CONFIG_SELECT_MEMORY_MODEL=y
CONFIG_FLATMEM_MANUAL=y
# CONFIG_DISCONTIGMEM_MANUAL is not set
# CONFIG_SPARSEMEM_MANUAL is not set
CONFIG_FLATMEM=y
CONFIG_FLAT_NODE_MEM_MAP=y
CONFIG_SPARSEMEM_STATIC=y
CONFIG_PAGEFLAGS_EXTENDED=y
CONFIG_SPLIT_PTLOCK_CPUS=4
# CONFIG_RESOURCES_64BIT is not set
# CONFIG_PHYS_ADDR_T_64BIT is not set
CONFIG_ZONE_DMA_FLAG=1
CONFIG_BOUNCE=y
CONFIG_VIRT_TO_BUS=y
CONFIG_UNEVICTABLE_LRU=y
# CONFIG_HIGHPTE is not set
# CONFIG_X86_CHECK_BIOS_CORRUPTION is not set
CONFIG_X86_RESERVE_LOW_64K=y
# CONFIG_MATH_EMULATION is not set
CONFIG_MTRR=y
# CONFIG_MTRR_SANITIZER is not set
CONFIG_X86_PAT=y
# CONFIG_EFI is not set
# CONFIG_SECCOMP is not set
# CONFIG_HZ_100 is not set
CONFIG_HZ_250=y
# CONFIG_HZ_300 is not set
# CONFIG_HZ_1000 is not set
CONFIG_HZ=250
# CONFIG_SCHED_HRTICK is not set
# CONFIG_KEXEC is not set
# CONFIG_CRASH_DUMP is not set
CONFIG_PHYSICAL_START=0x100000
# CONFIG_RELOCATABLE is not set
CONFIG_PHYSICAL_ALIGN=0x100000
# CONFIG_COMPAT_VDSO is not set
# CONFIG_CMDLINE_BOOL is not set
CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y

#
# Power management options
#
CONFIG_PM=y
# CONFIG_PM_DEBUG is not set
# CONFIG_SUSPEND is not set
# CONFIG_HIBERNATION is not set
CONFIG_ACPI=y
# CONFIG_ACPI_PROCFS is not set
CONFIG_ACPI_PROCFS_POWER=y
CONFIG_ACPI_SYSFS_POWER=y
CONFIG_ACPI_PROC_EVENT=y
CONFIG_ACPI_AC=y
CONFIG_ACPI_BATTERY=y
CONFIG_ACPI_BUTTON=y
CONFIG_ACPI_FAN=y
CONFIG_ACPI_DOCK=y
CONFIG_ACPI_PROCESSOR=y
CONFIG_ACPI_THERMAL=y
# CONFIG_ACPI_WMI is not set
CONFIG_ACPI_ASUS=y
CONFIG_ACPI_TOSHIBA=y
# CONFIG_ACPI_CUSTOM_DSDT is not set
CONFIG_ACPI_BLACKLIST_YEAR=0
# CONFIG_ACPI_DEBUG is not set
CONFIG_ACPI_EC=y
# CONFIG_ACPI_PCI_SLOT is not set
CONFIG_ACPI_POWER=y
CONFIG_ACPI_SYSTEM=y
CONFIG_X86_PM_TIMER=y
CONFIG_ACPI_CONTAINER=y
CONFIG_ACPI_SBS=y

#
# CPU Frequency scaling
#
# CONFIG_CPU_FREQ is not set
# CONFIG_CPU_IDLE is not set

#
# Memory power savings
#

#
# Bus options (PCI etc.)
#
CONFIG_PCI=y
# CONFIG_PCI_GOBIOS is not set
# CONFIG_PCI_GOMMCONFIG is not set
# CONFIG_PCI_GODIRECT is not set
# CONFIG_PCI_GOOLPC is not set
CONFIG_PCI_GOANY=y
CONFIG_PCI_BIOS=y
CONFIG_PCI_DIRECT=y
CONFIG_PCI_MMCONFIG=y
CONFIG_PCI_DOMAINS=y
# CONFIG_PCIEPORTBUS is not set
# CONFIG_ARCH_SUPPORTS_MSI is not set
# CONFIG_PCI_LEGACY is not set
# CONFIG_PCI_DEBUG is not set
CONFIG_ISA_DMA_API=y
# CONFIG_ISA is not set
# CONFIG_MCA is not set
# CONFIG_SCx200 is not set
# CONFIG_OLPC is not set
# CONFIG_PCCARD is not set
# CONFIG_HOTPLUG_PCI is not set

#
# Executable file formats / Emulations
#
CONFIG_BINFMT_ELF=y
# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
CONFIG_HAVE_AOUT=y
# CONFIG_BINFMT_AOUT is not set
CONFIG_BINFMT_MISC=y
CONFIG_NET=y

#
# Networking options
#
# CONFIG_NET_NS is not set
CONFIG_PACKET=y
CONFIG_PACKET_MMAP=y
CONFIG_UNIX=y
# CONFIG_NET_KEY is not set
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 is not set
# 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_NETWORK_SECMARK is not set
# 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_NET_DSA 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
# CONFIG_PHONET is not set
CONFIG_WIRELESS=y
# CONFIG_CFG80211 is not set
# CONFIG_WIRELESS_OLD_REGULATORY is not set
# CONFIG_WIRELESS_EXT is not set
# CONFIG_MAC80211 is not set
# CONFIG_IEEE80211 is not set
CONFIG_RFKILL=y
# CONFIG_RFKILL_INPUT 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_FIRMWARE_IN_KERNEL=y
CONFIG_EXTRA_FIRMWARE=""
# CONFIG_DEBUG_DRIVER is not set
# CONFIG_DEBUG_DEVRES is not set
# 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_MESSAGES=y

#
# 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=y
# CONFIG_BLK_DEV_CRYPTOLOOP is not set
# CONFIG_BLK_DEV_NBD is not set
# CONFIG_BLK_DEV_SX8 is not set
# CONFIG_BLK_DEV_RAM is not set
# CONFIG_CDROM_PKTCDVD is not set
# CONFIG_ATA_OVER_ETH is not set
# CONFIG_BLK_DEV_HD is not set
# CONFIG_MISC_DEVICES is not set
CONFIG_HAVE_IDE=y
# CONFIG_IDE is not set

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

#
# 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 is not set
# CONFIG_CHR_DEV_SCH is not set

#
# Some SCSI devices (e.g. CD jukebox) support multiple LUNs
#
# CONFIG_SCSI_MULTI_LUN is not set
# CONFIG_SCSI_CONSTANTS is not set
# CONFIG_SCSI_LOGGING is not set
# CONFIG_SCSI_SCAN_ASYNC is not set

#
# 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_SCSI_DH is not set
CONFIG_ATA=y
# CONFIG_ATA_NONSTANDARD is not set
# CONFIG_ATA_ACPI is not set
# CONFIG_SATA_PMP is not set
# CONFIG_SATA_AHCI is not set
# CONFIG_SATA_SIL24 is not set
CONFIG_ATA_SFF=y
# CONFIG_SATA_SVW is not set
CONFIG_ATA_PIIX=y
# CONFIG_SATA_MV is not set
# 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_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_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_CS5535 is not set
# CONFIG_PATA_CS5536 is not set
# CONFIG_PATA_CYPRESS is not set
# CONFIG_PATA_EFAR is not set
# CONFIG_ATA_GENERIC is not set
# 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 is not set
# CONFIG_PATA_MPIIX is not set
# CONFIG_PATA_OLDPIIX is not set
# 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_PATA_PLATFORM is not set
# CONFIG_PATA_SCH is not set
# CONFIG_MD is not set
# CONFIG_FUSION is not set

#
# IEEE 1394 (FireWire) support
#

#
# Enable only one of the two stacks, unless you know what you are doing
#
# 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_DUMMY is not set
# CONFIG_BONDING is not set
# CONFIG_MACVLAN is not set
# CONFIG_EQUALIZER is not set
# CONFIG_TUN is not set
# CONFIG_VETH is not set
# CONFIG_NET_SB1000 is not set
# CONFIG_ARCNET is not set
# CONFIG_PHYLIB is not set
CONFIG_NET_ETHERNET=y
CONFIG_MII=y
# CONFIG_HAPPYMEAL is not set
# CONFIG_SUNGEM is not set
# CONFIG_CASSINI is not set
# CONFIG_NET_VENDOR_3COM is not set
# CONFIG_NET_TULIP is not set
# CONFIG_HP100 is not set
# CONFIG_IBM_NEW_EMAC_ZMII is not set
# CONFIG_IBM_NEW_EMAC_RGMII is not set
# CONFIG_IBM_NEW_EMAC_TAH is not set
# CONFIG_IBM_NEW_EMAC_EMAC4 is not set
# CONFIG_IBM_NEW_EMAC_NO_FLOW_CTRL is not set
# CONFIG_IBM_NEW_EMAC_MAL_CLR_ICINTSTAT is not set
# CONFIG_IBM_NEW_EMAC_MAL_COMMON_ERR is not set
CONFIG_NET_PCI=y
# CONFIG_PCNET32 is not set
# CONFIG_AMD8111_ETH is not set
# CONFIG_ADAPTEC_STARFIRE is not set
# CONFIG_B44 is not set
# CONFIG_FORCEDETH is not set
# CONFIG_EEPRO100 is not set
# CONFIG_E100 is not set
# CONFIG_FEALNX is not set
# CONFIG_NATSEMI is not set
# CONFIG_NE2K_PCI is not set
CONFIG_8139CP=y
# CONFIG_8139TOO is not set
# CONFIG_R6040 is not set
# CONFIG_SIS900 is not set
# CONFIG_EPIC100 is not set
# CONFIG_SUNDANCE is not set
# CONFIG_TLAN is not set
# CONFIG_VIA_RHINE is not set
# CONFIG_SC92031 is not set
# CONFIG_ATL2 is not set
# CONFIG_NETDEV_1000 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_IWLWIFI_LEDS 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=y

#
# 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=y
CONFIG_KEYBOARD_LKKBD=y
CONFIG_KEYBOARD_XTKBD=y
CONFIG_KEYBOARD_NEWTON=y
# CONFIG_KEYBOARD_STOWAWAY is not set
# CONFIG_INPUT_MOUSE 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 is not set
# CONFIG_SERIO_CT82C710 is not set
# CONFIG_SERIO_PCIPS2 is not set
CONFIG_SERIO_LIBPS2=y
# CONFIG_SERIO_RAW is not set
# CONFIG_GAMEPORT is not set

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

#
# Serial drivers
#
# CONFIG_SERIAL_8250 is not set
CONFIG_FIX_EARLYCON_MEM=y

#
# Non-8250 serial port support
#
# CONFIG_SERIAL_JSM is not set
CONFIG_UNIX98_PTYS=y
CONFIG_LEGACY_PTYS=y
CONFIG_LEGACY_PTY_COUNT=16
# CONFIG_IPMI_HANDLER is not set
CONFIG_HW_RANDOM=y
CONFIG_HW_RANDOM_INTEL=y
# CONFIG_HW_RANDOM_AMD is not set
# CONFIG_HW_RANDOM_GEODE is not set
# CONFIG_HW_RANDOM_VIA is not set
CONFIG_NVRAM=y
# CONFIG_R3964 is not set
# CONFIG_APPLICOM is not set
# CONFIG_SONYPI is not set
# CONFIG_MWAVE is not set
# CONFIG_PC8736x_GPIO is not set
# CONFIG_NSC_GPIO is not set
# CONFIG_CS5535_GPIO is not set
# CONFIG_RAW_DRIVER is not set
CONFIG_HPET=y
CONFIG_HPET_MMAP=y
# CONFIG_HANGCHECK_TIMER is not set
# CONFIG_TCG_TPM is not set
# CONFIG_TELCLOCK is not set
CONFIG_DEVPORT=y
# CONFIG_I2C is not set
# CONFIG_SPI is not set
CONFIG_ARCH_WANT_OPTIONAL_GPIOLIB=y
# CONFIG_GPIOLIB 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_CORE is not set
# CONFIG_MFD_SM501 is not set
# CONFIG_HTC_PASIC3 is not set
# CONFIG_MFD_TMIO is not set
# CONFIG_MFD_WM8400 is not set

#
# Multimedia devices
#

#
# Multimedia core support
#
# CONFIG_VIDEO_DEV is not set
# CONFIG_DVB_CORE is not set
# CONFIG_VIDEO_MEDIA is not set

#
# Multimedia drivers
#
# CONFIG_DAB is not set

#
# Graphics support
#
# CONFIG_AGP is not set
# CONFIG_DRM is not set
# CONFIG_VGASTATE is not set
# CONFIG_VIDEO_OUTPUT_CONTROL is not set
# CONFIG_FB is not set
# CONFIG_BACKLIGHT_LCD_SUPPORT is not set
CONFIG_BACKLIGHT_CLASS_DEVICE=y
# CONFIG_BACKLIGHT_CORGI is not set
# CONFIG_BACKLIGHT_PROGEAR is not set
# CONFIG_BACKLIGHT_MBP_NVIDIA is not set
# CONFIG_BACKLIGHT_SAHARA is not set

#
# Display device support
#
# CONFIG_DISPLAY_SUPPORT is not set

#
# Console display driver support
#
CONFIG_VGA_CONSOLE=y
# CONFIG_VGACON_SOFT_SCROLLBACK is not set
CONFIG_DUMMY_CONSOLE=y
# CONFIG_SOUND is not set
# CONFIG_HID_SUPPORT is not set
# CONFIG_USB_SUPPORT is not set
# CONFIG_UWB is not set
# CONFIG_MMC is not set
# CONFIG_MEMSTICK is not set
# CONFIG_NEW_LEDS is not set
# CONFIG_ACCESSIBILITY is not set
# CONFIG_INFINIBAND is not set
# CONFIG_EDAC is not set
CONFIG_RTC_LIB=y
CONFIG_RTC_CLASS=y
CONFIG_RTC_HCTOSYS=y
CONFIG_RTC_HCTOSYS_DEVICE="rtc0"
# CONFIG_RTC_DEBUG is not set

#
# RTC interfaces
#
CONFIG_RTC_INTF_PROC=y
CONFIG_RTC_INTF_DEV=y
# CONFIG_RTC_INTF_DEV_UIE_EMUL is not set
# CONFIG_RTC_DRV_TEST is not set

#
# SPI RTC drivers
#

#
# Platform RTC drivers
#
CONFIG_RTC_DRV_CMOS=y
# CONFIG_RTC_DRV_DS1286 is not set
# CONFIG_RTC_DRV_DS1511 is not set
# CONFIG_RTC_DRV_DS1553 is not set
# CONFIG_RTC_DRV_DS1742 is not set
# CONFIG_RTC_DRV_STK17TA8 is not set
# CONFIG_RTC_DRV_M48T86 is not set
# CONFIG_RTC_DRV_M48T35 is not set
# CONFIG_RTC_DRV_M48T59 is not set
# CONFIG_RTC_DRV_BQ4802 is not set
# CONFIG_RTC_DRV_V3020 is not set

#
# on-CPU RTC drivers
#
# CONFIG_DMADEVICES is not set
# CONFIG_UIO is not set
# CONFIG_STAGING is not set

#
# Firmware Drivers
#
# CONFIG_EDD is not set
CONFIG_FIRMWARE_MEMMAP=y
# CONFIG_DELL_RBU is not set
# CONFIG_DCDBAS is not set
# CONFIG_DMIID is not set
# CONFIG_ISCSI_IBFT_FIND is not set

#
# File systems
#
CONFIG_EXT2_FS=y
# CONFIG_EXT2_FS_XATTR is not set
# CONFIG_EXT2_FS_XIP is not set
CONFIG_EXT3_FS=y
# CONFIG_EXT3_FS_XATTR is not set
# CONFIG_EXT4_FS is not set
CONFIG_JBD=y
# CONFIG_REISERFS_FS is not set
# CONFIG_JFS_FS is not set
# CONFIG_FS_POSIX_ACL is not set
CONFIG_FILE_LOCKING=y
# CONFIG_XFS_FS is not set
# CONFIG_DNOTIFY is not set
# CONFIG_INOTIFY is not set
# CONFIG_QUOTA is not set
# CONFIG_AUTOFS_FS is not set
# CONFIG_AUTOFS4_FS is not set
# CONFIG_FUSE_FS is not set

#
# 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 is not set
CONFIG_PROC_SYSCTL=y
CONFIG_PROC_PAGE_MONITOR=y
# CONFIG_SYSFS is not set
CONFIG_TMPFS=y
# CONFIG_TMPFS_POSIX_ACL is not set
# CONFIG_HUGETLBFS is not set
# CONFIG_HUGETLB_PAGE is not set

#
# Miscellaneous filesystems
#
# CONFIG_ADFS_FS is not set
# CONFIG_AFFS_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_OMFS_FS is not set
# CONFIG_HPFS_FS is not set
# CONFIG_QNX4FS_FS is not set
# CONFIG_ROMFS_FS is not set
# CONFIG_SYSV_FS is not set
# CONFIG_UFS_FS is not set
# CONFIG_NETWORK_FILESYSTEMS is not set

#
# Partition Types
#
# CONFIG_PARTITION_ADVANCED is not set
CONFIG_MSDOS_PARTITION=y
# CONFIG_NLS is not set

#
# Kernel hacking
#
CONFIG_TRACE_IRQFLAGS_SUPPORT=y
CONFIG_PRINTK_TIME=y
# CONFIG_ENABLE_WARN_DEPRECATED is not set
# CONFIG_ENABLE_MUST_CHECK is not set
CONFIG_FRAME_WARN=1024
CONFIG_MAGIC_SYSRQ=y
# CONFIG_UNUSED_SYMBOLS is not set
# CONFIG_HEADERS_CHECK is not set
CONFIG_DEBUG_KERNEL=y
# CONFIG_DEBUG_SHIRQ is not set
CONFIG_DETECT_SOFTLOCKUP=y
# CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC is not set
CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC_VALUE=0
# CONFIG_SCHED_DEBUG is not set
# CONFIG_SCHEDSTATS is not set
# CONFIG_TIMER_STATS is not set
CONFIG_DEBUG_OBJECTS=y
# CONFIG_DEBUG_OBJECTS_SELFTEST is not set
CONFIG_DEBUG_OBJECTS_FREE=y
CONFIG_DEBUG_OBJECTS_TIMERS=y
CONFIG_DEBUG_SLAB=y
# CONFIG_DEBUG_SLAB_LEAK is not set
CONFIG_DEBUG_RT_MUTEXES=y
CONFIG_DEBUG_PI_LIST=y
# CONFIG_RT_MUTEX_TESTER is not set
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 is not set
CONFIG_TRACE_IRQFLAGS=y
CONFIG_DEBUG_SPINLOCK_SLEEP=y
# CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
CONFIG_STACKTRACE=y
# CONFIG_DEBUG_KOBJECT is not set
CONFIG_DEBUG_HIGHMEM=y
CONFIG_DEBUG_BUGVERBOSE=y
CONFIG_DEBUG_INFO=y
CONFIG_DEBUG_VM=y
CONFIG_DEBUG_VIRTUAL=y
CONFIG_DEBUG_WRITECOUNT=y
CONFIG_DEBUG_MEMORY_INIT=y
CONFIG_DEBUG_LIST=y
CONFIG_DEBUG_SG=y
CONFIG_FRAME_POINTER=y
# CONFIG_BOOT_PRINTK_DELAY is not set
# CONFIG_RCU_TORTURE_TEST is not set
# CONFIG_RCU_CPU_STALL_DETECTOR is not set
# CONFIG_BACKTRACE_SELF_TEST is not set
# CONFIG_DEBUG_BLOCK_EXT_DEVT is not set
# CONFIG_FAULT_INJECTION is not set
# CONFIG_LATENCYTOP is not set
CONFIG_SYSCTL_SYSCALL_CHECK=y
CONFIG_NOP_TRACER=y
CONFIG_HAVE_FTRACE=y
CONFIG_HAVE_DYNAMIC_FTRACE=y
CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
# CONFIG_FTRACE is not set
# CONFIG_IRQSOFF_TRACER is not set
# CONFIG_SYSPROF_TRACER is not set
# CONFIG_SCHED_TRACER is not set
# CONFIG_CONTEXT_SWITCH_TRACER is not set
# CONFIG_BOOT_TRACER is not set
# CONFIG_STACK_TRACER is not set
# CONFIG_PROVIDE_OHCI1394_DMA_INIT is not set
# CONFIG_DYNAMIC_PRINTK_DEBUG is not set
# CONFIG_SAMPLES is not set
CONFIG_HAVE_ARCH_KGDB=y
# CONFIG_KGDB is not set
CONFIG_STRICT_DEVMEM=y
CONFIG_X86_VERBOSE_BOOTUP=y
# CONFIG_EARLY_PRINTK is not set
# CONFIG_DEBUG_STACKOVERFLOW is not set
# CONFIG_DEBUG_STACK_USAGE is not set
CONFIG_DEBUG_PAGEALLOC=y
# CONFIG_X86_PTDUMP is not set
CONFIG_DEBUG_RODATA=y
# CONFIG_DEBUG_RODATA_TEST is not set
# CONFIG_4KSTACKS is not set
CONFIG_DOUBLEFAULT=y
# 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=y
# CONFIG_IO_DELAY_0XED is not set
# CONFIG_IO_DELAY_UDELAY is not set
# CONFIG_IO_DELAY_NONE is not set
CONFIG_DEFAULT_IO_DELAY_TYPE=0
# CONFIG_CPA_DEBUG is not set
# CONFIG_OPTIMIZE_INLINING is not set

#
# Security options
#
# CONFIG_KEYS is not set
# CONFIG_SECURITYFS is not set
# CONFIG_SECURITY_FILE_CAPABILITIES is not set
# CONFIG_CRYPTO is not set
CONFIG_HAVE_KVM=y
# CONFIG_VIRTUALIZATION is not set

#
# Library routines
#
CONFIG_BITREVERSE=y
CONFIG_GENERIC_FIND_FIRST_BIT=y
CONFIG_GENERIC_FIND_NEXT_BIT=y
CONFIG_CRC_CCITT=y
# CONFIG_CRC16 is not set
# CONFIG_CRC_T10DIF 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

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^ permalink raw reply	[flat|nested] 13+ messages in thread

* Re: 2.6.28-rc1: EIP: slab_destroy+0x84/0x142
  2008-10-24 18:59 ` 2.6.28-rc1: EIP: slab_destroy+0x84/0x142 Alexey Dobriyan
@ 2008-10-24 21:38   ` Matt Mackall
  2008-10-24 22:09     ` Alexey Dobriyan
  0 siblings, 1 reply; 13+ messages in thread
From: Matt Mackall @ 2008-10-24 21:38 UTC (permalink / raw)
  To: Alexey Dobriyan; +Cc: Linus Torvalds, linux-mm, cl, penberg, akpm

On Fri, 2008-10-24 at 22:59 +0400, Alexey Dobriyan wrote:
> Reproducible under KVM during initscripts:

Not sure what you're trying to tell us here. Are you implying that a
fault occurred at this line? Do you have an oops?

> 	debug_check_no_locks_freed
> 	free_hot_cold_page
> 	free_hot_page
> 	put_page
> 	free_page_and_swap_cache
> 	unmap_vmas
> 	exit_mmap
> 	mmput
> 	flush_old_exec
> 	vfs_read
> 	kernel_read
> 	load_elf_binary
> 	search_binary_handler
> 	load_elf_binary
> 	load_elf_binary
> 	search_binary_handler
> 	do_execve
> 	sys_execve
> 	syscall_call
> --------------------------------
> 	kmem_cache_free
> 	file_free_rcu
> 	__rcu_process_callbacks
> 	__do_softirq
> 	do_softirq
> 	irq_exit
> 	do_IRQ
> 	common_interrupt
> 	kvm_leave_lazy_mmu
> 	copy_page_range
> 	dup_mm
> 	copy_process
> 	do_fork
> 	trace_hardirqs_on
> 	copy_to_user
> 	trace_hardirqs_on_thunk
> 	sys_clone
> 	syscall_call
> 
> EIP: slab_destroy+0x84/0x142
> 
> mm/slab.c:1924
> 
>   1904	#if DEBUG
>   1905	static void slab_destroy_debugcheck(struct kmem_cache *cachep, struct slab *slabp)
>   1906	{
>   1907		int i;
>   1908		for (i = 0; i < cachep->num; i++) {
>   1909			void *objp = index_to_obj(cachep, slabp, i);
>   1910	
>   1911			if (cachep->flags & SLAB_POISON) {
>   1912	#ifdef CONFIG_DEBUG_PAGEALLOC
>   1913				if (cachep->buffer_size % PAGE_SIZE == 0 &&
>   1914						OFF_SLAB(cachep))
>   1915					kernel_map_pages(virt_to_page(objp),
>   1916						cachep->buffer_size / PAGE_SIZE, 1);
>   1917				else
>   1918					check_poison_obj(cachep, objp);
>   1919	#else
>   1920				check_poison_obj(cachep, objp);
>   1921	#endif
>   1922			}
>   1923			if (cachep->flags & SLAB_RED_ZONE) {
>   1924		===>		if (*dbg_redzone1(cachep, objp) != RED_INACTIVE)	<===
>   1925					slab_error(cachep, "start of a freed object "
>   1926						   "was overwritten");
>   1927				if (*dbg_redzone2(cachep, objp) != RED_INACTIVE)
>   1928					slab_error(cachep, "end of a freed object "
>   1929						   "was overwritten");
>   1930			}
>   1931		}
>   1932	}
>   1933	#else
>  
> 
> c015693a <slab_destroy>:
> c015693a:	55                   	push   %ebp
> c015693b:	89 e5                	mov    %esp,%ebp
> c015693d:	57                   	push   %edi
> c015693e:	56                   	push   %esi
> c015693f:	53                   	push   %ebx
> c0156940:	89 c3                	mov    %eax,%ebx
> c0156942:	83 ec 14             	sub    $0x14,%esp
> c0156945:	89 55 e0             	mov    %edx,-0x20(%ebp)
> c0156948:	8b 42 0c             	mov    0xc(%edx),%eax
> c015694b:	89 45 e4             	mov    %eax,-0x1c(%ebp)
> c015694e:	8b 52 08             	mov    0x8(%edx),%edx
> c0156951:	c7 45 ec 00 00 00 00 	movl   $0x0,-0x14(%ebp)
> c0156958:	89 55 e8             	mov    %edx,-0x18(%ebp)
> c015695b:	e9 c8 00 00 00       	jmp    c0156a28 <slab_destroy+0xee>
> c0156960:	8b 7b 10             	mov    0x10(%ebx),%edi
> c0156963:	8b 75 ec             	mov    -0x14(%ebp),%esi
> c0156966:	8b 55 e0             	mov    -0x20(%ebp),%edx
> c0156969:	0f af f7             	imul   %edi,%esi
> c015696c:	03 72 0c             	add    0xc(%edx),%esi
> c015696f:	f6 c4 08             	test   $0x8,%ah
> c0156972:	74 3e                	je     c01569b2 <slab_destroy+0x78>
> c0156974:	f7 c7 ff 0f 00 00    	test   $0xfff,%edi
> c015697a:	75 2d                	jne    c01569a9 <slab_destroy+0x6f>
> c015697c:	85 c0                	test   %eax,%eax
> c015697e:	79 29                	jns    c01569a9 <slab_destroy+0x6f>
> c0156980:	a1 00 36 6f c0       	mov    0xc06f3600,%eax
> c0156985:	c1 ef 0c             	shr    $0xc,%edi
> c0156988:	89 45 f0             	mov    %eax,-0x10(%ebp)
> c015698b:	89 f0                	mov    %esi,%eax
> c015698d:	e8 26 ae fb ff       	call   c01117b8 <__phys_addr>
> c0156992:	b9 01 00 00 00       	mov    $0x1,%ecx
> c0156997:	89 fa                	mov    %edi,%edx
> c0156999:	c1 e8 0c             	shr    $0xc,%eax
> c015699c:	c1 e0 05             	shl    $0x5,%eax
> c015699f:	03 45 f0             	add    -0x10(%ebp),%eax
> c01569a2:	e8 12 bb fb ff       	call   c01124b9 <kernel_map_pages>
> c01569a7:	eb 09                	jmp    c01569b2 <slab_destroy+0x78>
> c01569a9:	89 f2                	mov    %esi,%edx
> c01569ab:	89 d8                	mov    %ebx,%eax
> c01569ad:	e8 fd f2 ff ff       	call   c0155caf <check_poison_obj>
> c01569b2:	f6 43 19 04          	testb  $0x4,0x19(%ebx)
> c01569b6:	74 6d                	je     c0156a25 <slab_destroy+0xeb>
> c01569b8:	8b 83 84 00 00 00    	mov    0x84(%ebx),%eax
> c01569be: ===>	81 7c 06 fc 02 11 f9 	cmpl   $0x9f91102,-0x4(%esi,%eax,1)	<===
> c01569c5:	09 
> c01569c6:	75 0a                	jne    c01569d2 <slab_destroy+0x98>
> c01569c8:	81 7c 06 f8 5b e3 74 	cmpl   $0x9d74e35b,-0x8(%esi,%eax,1)
> c01569cf:	9d 
> c01569d0:	74 11                	je     c01569e3 <slab_destroy+0xa9>
> c01569d2:	b9 82 f4 2d c0       	mov    $0xc02df482,%ecx
> c01569d7:	89 da                	mov    %ebx,%edx
> c01569d9:	b8 8c ae 28 c0       	mov    $0xc028ae8c,%eax
> c01569de:	e8 29 f4 ff ff       	call   c0155e0c <__slab_error>
> c01569e3:	8b 43 18             	mov    0x18(%ebx),%eax
> c01569e6:	f6 c4 04             	test   $0x4,%ah
> c01569e9:	75 04                	jne    c01569ef <slab_destroy+0xb5>
> c01569eb:	0f 0b                	ud2a   
> c01569ed:	eb fe                	jmp    c01569ed <slab_destroy+0xb3>
> c01569ef:	a9 00 00 01 00       	test   $0x10000,%eax
> c01569f4:	8b 43 10             	mov    0x10(%ebx),%eax
> c01569f7:	74 06                	je     c01569ff <slab_destroy+0xc5>
> c01569f9:	8d 44 06 f0          	lea    -0x10(%esi,%eax,1),%eax
> c01569fd:	eb 04                	jmp    c0156a03 <slab_destroy+0xc9>
> c01569ff:	8d 44 06 f8          	lea    -0x8(%esi,%eax,1),%eax
> c0156a03:	81 78 04 02 11 f9 09 	cmpl   $0x9f91102,0x4(%eax)
> c0156a0a:	75 08                	jne    c0156a14 <slab_destroy+0xda>
> c0156a0c:	81 38 5b e3 74 9d    	cmpl   $0x9d74e35b,(%eax)
> c0156a12:	74 11                	je     c0156a25 <slab_destroy+0xeb>
> c0156a14:	b9 aa f4 2d c0       	mov    $0xc02df4aa,%ecx
> c0156a19:	89 da                	mov    %ebx,%edx
> c0156a1b:	b8 8c ae 28 c0       	mov    $0xc028ae8c,%eax
> c0156a20:	e8 e7 f3 ff ff       	call   c0155e0c <__slab_error>
> c0156a25:	ff 45 ec             	incl   -0x14(%ebp)
> c0156a28:	8b 55 ec             	mov    -0x14(%ebp),%edx
> c0156a2b:	3b 53 1c             	cmp    0x1c(%ebx),%edx
> c0156a2e:	8b 43 18             	mov    0x18(%ebx),%eax
> c0156a31:	0f 82 29 ff ff ff    	jb     c0156960 <slab_destroy+0x26>
> c0156a37:	8b 55 e4             	mov    -0x1c(%ebp),%edx
> c0156a3a:	2b 55 e8             	sub    -0x18(%ebp),%edx
> c0156a3d:	a9 00 00 08 00       	test   $0x80000,%eax
> c0156a42:	74 18                	je     c0156a5c <slab_destroy+0x122>
> c0156a44:	8b 45 e0             	mov    -0x20(%ebp),%eax
> c0156a47:	89 58 08             	mov    %ebx,0x8(%eax)
> c0156a4a:	89 50 0c             	mov    %edx,0xc(%eax)
> c0156a4d:	8b 45 e0             	mov    -0x20(%ebp),%eax
> c0156a50:	ba b5 6d 15 c0       	mov    $0xc0156db5,%edx
> c0156a55:	e8 76 30 fe ff       	call   c0139ad0 <call_rcu>
> c0156a5a:	eb 18                	jmp    c0156a74 <slab_destroy+0x13a>
> c0156a5c:	89 d8                	mov    %ebx,%eax
> c0156a5e:	e8 c5 f3 ff ff       	call   c0155e28 <kmem_freepages>
> c0156a63:	83 7b 18 00          	cmpl   $0x0,0x18(%ebx)
> c0156a67:	79 0b                	jns    c0156a74 <slab_destroy+0x13a>
> c0156a69:	8b 43 30             	mov    0x30(%ebx),%eax
> c0156a6c:	8b 55 e0             	mov    -0x20(%ebp),%edx
> c0156a6f:	e8 01 fe ff ff       	call   c0156875 <kmem_cache_free>
> c0156a74:	83 c4 14             	add    $0x14,%esp
> c0156a77:	5b                   	pop    %ebx
> c0156a78:	5e                   	pop    %esi
> c0156a79:	5f                   	pop    %edi
> c0156a7a:	5d                   	pop    %ebp
> c0156a7b:	c3                   	ret    
> 
> 
> 
> #
> # Automatically generated make config: don't edit
> # Linux kernel version: 2.6.28-rc1
> # Fri Oct 24 22:53:31 2008
> #
> # CONFIG_64BIT is not set
> CONFIG_X86_32=y
> # CONFIG_X86_64 is not set
> CONFIG_X86=y
> CONFIG_ARCH_DEFCONFIG="arch/x86/configs/i386_defconfig"
> CONFIG_GENERIC_TIME=y
> CONFIG_GENERIC_CMOS_UPDATE=y
> CONFIG_CLOCKSOURCE_WATCHDOG=y
> CONFIG_GENERIC_CLOCKEVENTS=y
> CONFIG_LOCKDEP_SUPPORT=y
> CONFIG_STACKTRACE_SUPPORT=y
> CONFIG_HAVE_LATENCYTOP_SUPPORT=y
> CONFIG_FAST_CMPXCHG_LOCAL=y
> CONFIG_MMU=y
> CONFIG_ZONE_DMA=y
> CONFIG_GENERIC_ISA_DMA=y
> CONFIG_GENERIC_IOMAP=y
> CONFIG_GENERIC_BUG=y
> CONFIG_GENERIC_HWEIGHT=y
> CONFIG_ARCH_MAY_HAVE_PC_FDC=y
> # CONFIG_RWSEM_GENERIC_SPINLOCK is not set
> CONFIG_RWSEM_XCHGADD_ALGORITHM=y
> CONFIG_ARCH_HAS_CPU_IDLE_WAIT=y
> CONFIG_GENERIC_CALIBRATE_DELAY=y
> # CONFIG_GENERIC_TIME_VSYSCALL is not set
> CONFIG_ARCH_HAS_CPU_RELAX=y
> CONFIG_ARCH_HAS_DEFAULT_IDLE=y
> CONFIG_ARCH_HAS_CACHE_LINE_SIZE=y
> # CONFIG_HAVE_SETUP_PER_CPU_AREA is not set
> # CONFIG_HAVE_CPUMASK_OF_CPU_MAP is not set
> CONFIG_ARCH_HIBERNATION_POSSIBLE=y
> CONFIG_ARCH_SUSPEND_POSSIBLE=y
> # CONFIG_ZONE_DMA32 is not set
> CONFIG_ARCH_POPULATES_NODE_MAP=y
> # CONFIG_AUDIT_ARCH is not set
> CONFIG_ARCH_SUPPORTS_OPTIMIZED_INLINING=y
> CONFIG_GENERIC_HARDIRQS=y
> CONFIG_GENERIC_IRQ_PROBE=y
> CONFIG_X86_BIOS_REBOOT=y
> CONFIG_KTIME_SCALAR=y
> CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
> 
> #
> # General setup
> #
> CONFIG_EXPERIMENTAL=y
> CONFIG_BROKEN_ON_SMP=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 is not set
> # CONFIG_BSD_PROCESS_ACCT is not set
> # CONFIG_TASKSTATS is not set
> # CONFIG_AUDIT is not set
> CONFIG_IKCONFIG=y
> CONFIG_IKCONFIG_PROC=y
> CONFIG_LOG_BUF_SHIFT=15
> # CONFIG_CGROUPS is not set
> CONFIG_HAVE_UNSTABLE_SCHED_CLOCK=y
> # CONFIG_GROUP_SCHED is not set
> # CONFIG_RELAY is not set
> CONFIG_NAMESPACES=y
> CONFIG_UTS_NS=y
> CONFIG_IPC_NS=y
> CONFIG_USER_NS=y
> CONFIG_PID_NS=y
> # CONFIG_BLK_DEV_INITRD is not set
> CONFIG_CC_OPTIMIZE_FOR_SIZE=y
> CONFIG_SYSCTL=y
> CONFIG_EMBEDDED=y
> CONFIG_UID16=y
> CONFIG_SYSCTL_SYSCALL=y
> CONFIG_KALLSYMS=y
> CONFIG_KALLSYMS_ALL=y
> # CONFIG_KALLSYMS_EXTRA_PASS is not set
> CONFIG_HOTPLUG=y
> CONFIG_PRINTK=y
> CONFIG_BUG=y
> CONFIG_ELF_CORE=y
> CONFIG_PCSPKR_PLATFORM=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_AIO=y
> CONFIG_VM_EVENT_COUNTERS=y
> CONFIG_PCI_QUIRKS=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_HAVE_EFFICIENT_UNALIGNED_ACCESS=y
> CONFIG_HAVE_IOREMAP_PROT=y
> CONFIG_HAVE_KPROBES=y
> CONFIG_HAVE_KRETPROBES=y
> CONFIG_HAVE_ARCH_TRACEHOOK=y
> CONFIG_HAVE_GENERIC_DMA_COHERENT=y
> CONFIG_SLABINFO=y
> CONFIG_RT_MUTEXES=y
> # CONFIG_TINY_SHMEM is not set
> CONFIG_BASE_SMALL=0
> # CONFIG_MODULES is not set
> CONFIG_BLOCK=y
> # CONFIG_LBD is not set
> # CONFIG_LSF is not set
> # CONFIG_BLK_DEV_BSG is not set
> # CONFIG_BLK_DEV_INTEGRITY is not set
> 
> #
> # IO Schedulers
> #
> CONFIG_IOSCHED_NOOP=y
> # CONFIG_IOSCHED_AS is not set
> # CONFIG_IOSCHED_DEADLINE is not set
> # CONFIG_IOSCHED_CFQ is not set
> # CONFIG_DEFAULT_AS is not set
> # CONFIG_DEFAULT_DEADLINE is not set
> # CONFIG_DEFAULT_CFQ is not set
> CONFIG_DEFAULT_NOOP=y
> CONFIG_DEFAULT_IOSCHED="noop"
> CONFIG_CLASSIC_RCU=y
> # CONFIG_FREEZER is not set
> 
> #
> # Processor type and features
> #
> # CONFIG_NO_HZ is not set
> # CONFIG_HIGH_RES_TIMERS is not set
> CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
> # CONFIG_SMP is not set
> CONFIG_X86_PC=y
> # CONFIG_X86_ELAN is not set
> # CONFIG_X86_VOYAGER is not set
> # CONFIG_X86_GENERICARCH is not set
> # CONFIG_X86_VSMP is not set
> # CONFIG_X86_RDC321X is not set
> CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER=y
> CONFIG_PARAVIRT_GUEST=y
> # CONFIG_VMI is not set
> CONFIG_KVM_CLOCK=y
> CONFIG_KVM_GUEST=y
> # CONFIG_LGUEST_GUEST is not set
> CONFIG_PARAVIRT=y
> CONFIG_PARAVIRT_CLOCK=y
> # CONFIG_PARAVIRT_DEBUG is not set
> # CONFIG_MEMTEST is not set
> # 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=y
> # 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_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 is not set
> # CONFIG_GENERIC_CPU is not set
> # CONFIG_X86_GENERIC is not set
> CONFIG_X86_CPU=y
> CONFIG_X86_CMPXCHG=y
> CONFIG_X86_L1_CACHE_SHIFT=5
> CONFIG_X86_XADD=y
> CONFIG_X86_PPRO_FENCE=y
> CONFIG_X86_WP_WORKS_OK=y
> CONFIG_X86_INVLPG=y
> CONFIG_X86_BSWAP=y
> CONFIG_X86_POPAD_OK=y
> CONFIG_X86_USE_PPRO_CHECKSUM=y
> CONFIG_X86_TSC=y
> CONFIG_X86_CMOV=y
> CONFIG_X86_MINIMUM_CPU_FAMILY=4
> CONFIG_X86_DEBUGCTLMSR=y
> # CONFIG_PROCESSOR_SELECT is not set
> CONFIG_CPU_SUP_INTEL=y
> CONFIG_CPU_SUP_CYRIX_32=y
> CONFIG_CPU_SUP_AMD=y
> CONFIG_CPU_SUP_CENTAUR_32=y
> CONFIG_CPU_SUP_TRANSMETA_32=y
> CONFIG_CPU_SUP_UMC_32=y
> CONFIG_X86_DS=y
> CONFIG_X86_PTRACE_BTS=y
> CONFIG_HPET_TIMER=y
> CONFIG_HPET_EMULATE_RTC=y
> CONFIG_DMI=y
> # CONFIG_IOMMU_HELPER is not set
> CONFIG_PREEMPT_NONE=y
> # CONFIG_PREEMPT_VOLUNTARY is not set
> # CONFIG_PREEMPT is not set
> # CONFIG_X86_UP_APIC is not set
> CONFIG_X86_MCE=y
> CONFIG_X86_MCE_NONFATAL=y
> CONFIG_VM86=y
> # CONFIG_TOSHIBA is not set
> # CONFIG_I8K is not set
> # CONFIG_X86_REBOOTFIXUPS is not set
> # CONFIG_MICROCODE is not set
> # CONFIG_X86_MSR is not set
> # CONFIG_X86_CPUID is not set
> # CONFIG_NOHIGHMEM is not set
> CONFIG_HIGHMEM4G=y
> # CONFIG_HIGHMEM64G is not set
> CONFIG_VMSPLIT_3G=y
> # CONFIG_VMSPLIT_3G_OPT is not set
> # CONFIG_VMSPLIT_2G is not set
> # CONFIG_VMSPLIT_2G_OPT is not set
> # CONFIG_VMSPLIT_1G is not set
> CONFIG_PAGE_OFFSET=0xC0000000
> CONFIG_HIGHMEM=y
> # CONFIG_ARCH_PHYS_ADDR_T_64BIT is not set
> CONFIG_ARCH_FLATMEM_ENABLE=y
> CONFIG_ARCH_SPARSEMEM_ENABLE=y
> CONFIG_ARCH_SELECT_MEMORY_MODEL=y
> CONFIG_SELECT_MEMORY_MODEL=y
> CONFIG_FLATMEM_MANUAL=y
> # CONFIG_DISCONTIGMEM_MANUAL is not set
> # CONFIG_SPARSEMEM_MANUAL is not set
> CONFIG_FLATMEM=y
> CONFIG_FLAT_NODE_MEM_MAP=y
> CONFIG_SPARSEMEM_STATIC=y
> CONFIG_PAGEFLAGS_EXTENDED=y
> CONFIG_SPLIT_PTLOCK_CPUS=4
> # CONFIG_RESOURCES_64BIT is not set
> # CONFIG_PHYS_ADDR_T_64BIT is not set
> CONFIG_ZONE_DMA_FLAG=1
> CONFIG_BOUNCE=y
> CONFIG_VIRT_TO_BUS=y
> CONFIG_UNEVICTABLE_LRU=y
> # CONFIG_HIGHPTE is not set
> # CONFIG_X86_CHECK_BIOS_CORRUPTION is not set
> CONFIG_X86_RESERVE_LOW_64K=y
> # CONFIG_MATH_EMULATION is not set
> CONFIG_MTRR=y
> # CONFIG_MTRR_SANITIZER is not set
> CONFIG_X86_PAT=y
> # CONFIG_EFI is not set
> # CONFIG_SECCOMP is not set
> # CONFIG_HZ_100 is not set
> CONFIG_HZ_250=y
> # CONFIG_HZ_300 is not set
> # CONFIG_HZ_1000 is not set
> CONFIG_HZ=250
> # CONFIG_SCHED_HRTICK is not set
> # CONFIG_KEXEC is not set
> # CONFIG_CRASH_DUMP is not set
> CONFIG_PHYSICAL_START=0x100000
> # CONFIG_RELOCATABLE is not set
> CONFIG_PHYSICAL_ALIGN=0x100000
> # CONFIG_COMPAT_VDSO is not set
> # CONFIG_CMDLINE_BOOL is not set
> CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y
> 
> #
> # Power management options
> #
> CONFIG_PM=y
> # CONFIG_PM_DEBUG is not set
> # CONFIG_SUSPEND is not set
> # CONFIG_HIBERNATION is not set
> CONFIG_ACPI=y
> # CONFIG_ACPI_PROCFS is not set
> CONFIG_ACPI_PROCFS_POWER=y
> CONFIG_ACPI_SYSFS_POWER=y
> CONFIG_ACPI_PROC_EVENT=y
> CONFIG_ACPI_AC=y
> CONFIG_ACPI_BATTERY=y
> CONFIG_ACPI_BUTTON=y
> CONFIG_ACPI_FAN=y
> CONFIG_ACPI_DOCK=y
> CONFIG_ACPI_PROCESSOR=y
> CONFIG_ACPI_THERMAL=y
> # CONFIG_ACPI_WMI is not set
> CONFIG_ACPI_ASUS=y
> CONFIG_ACPI_TOSHIBA=y
> # CONFIG_ACPI_CUSTOM_DSDT is not set
> CONFIG_ACPI_BLACKLIST_YEAR=0
> # CONFIG_ACPI_DEBUG is not set
> CONFIG_ACPI_EC=y
> # CONFIG_ACPI_PCI_SLOT is not set
> CONFIG_ACPI_POWER=y
> CONFIG_ACPI_SYSTEM=y
> CONFIG_X86_PM_TIMER=y
> CONFIG_ACPI_CONTAINER=y
> CONFIG_ACPI_SBS=y
> 
> #
> # CPU Frequency scaling
> #
> # CONFIG_CPU_FREQ is not set
> # CONFIG_CPU_IDLE is not set
> 
> #
> # Memory power savings
> #
> 
> #
> # Bus options (PCI etc.)
> #
> CONFIG_PCI=y
> # CONFIG_PCI_GOBIOS is not set
> # CONFIG_PCI_GOMMCONFIG is not set
> # CONFIG_PCI_GODIRECT is not set
> # CONFIG_PCI_GOOLPC is not set
> CONFIG_PCI_GOANY=y
> CONFIG_PCI_BIOS=y
> CONFIG_PCI_DIRECT=y
> CONFIG_PCI_MMCONFIG=y
> CONFIG_PCI_DOMAINS=y
> # CONFIG_PCIEPORTBUS is not set
> # CONFIG_ARCH_SUPPORTS_MSI is not set
> # CONFIG_PCI_LEGACY is not set
> # CONFIG_PCI_DEBUG is not set
> CONFIG_ISA_DMA_API=y
> # CONFIG_ISA is not set
> # CONFIG_MCA is not set
> # CONFIG_SCx200 is not set
> # CONFIG_OLPC is not set
> # CONFIG_PCCARD is not set
> # CONFIG_HOTPLUG_PCI is not set
> 
> #
> # Executable file formats / Emulations
> #
> CONFIG_BINFMT_ELF=y
> # CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
> CONFIG_HAVE_AOUT=y
> # CONFIG_BINFMT_AOUT is not set
> CONFIG_BINFMT_MISC=y
> CONFIG_NET=y
> 
> #
> # Networking options
> #
> # CONFIG_NET_NS is not set
> CONFIG_PACKET=y
> CONFIG_PACKET_MMAP=y
> CONFIG_UNIX=y
> # CONFIG_NET_KEY is not set
> 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 is not set
> # 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_NETWORK_SECMARK is not set
> # 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_NET_DSA 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
> # CONFIG_PHONET is not set
> CONFIG_WIRELESS=y
> # CONFIG_CFG80211 is not set
> # CONFIG_WIRELESS_OLD_REGULATORY is not set
> # CONFIG_WIRELESS_EXT is not set
> # CONFIG_MAC80211 is not set
> # CONFIG_IEEE80211 is not set
> CONFIG_RFKILL=y
> # CONFIG_RFKILL_INPUT 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_FIRMWARE_IN_KERNEL=y
> CONFIG_EXTRA_FIRMWARE=""
> # CONFIG_DEBUG_DRIVER is not set
> # CONFIG_DEBUG_DEVRES is not set
> # 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_MESSAGES=y
> 
> #
> # 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=y
> # CONFIG_BLK_DEV_CRYPTOLOOP is not set
> # CONFIG_BLK_DEV_NBD is not set
> # CONFIG_BLK_DEV_SX8 is not set
> # CONFIG_BLK_DEV_RAM is not set
> # CONFIG_CDROM_PKTCDVD is not set
> # CONFIG_ATA_OVER_ETH is not set
> # CONFIG_BLK_DEV_HD is not set
> # CONFIG_MISC_DEVICES is not set
> CONFIG_HAVE_IDE=y
> # CONFIG_IDE is not set
> 
> #
> # SCSI device support
> #
> # CONFIG_RAID_ATTRS is not set
> CONFIG_SCSI=y
> CONFIG_SCSI_DMA=y
> # CONFIG_SCSI_TGT is not set
> # CONFIG_SCSI_NETLINK is not set
> # CONFIG_SCSI_PROC_FS is not set
> 
> #
> # 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 is not set
> # CONFIG_CHR_DEV_SCH is not set
> 
> #
> # Some SCSI devices (e.g. CD jukebox) support multiple LUNs
> #
> # CONFIG_SCSI_MULTI_LUN is not set
> # CONFIG_SCSI_CONSTANTS is not set
> # CONFIG_SCSI_LOGGING is not set
> # CONFIG_SCSI_SCAN_ASYNC is not set
> 
> #
> # 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_SCSI_DH is not set
> CONFIG_ATA=y
> # CONFIG_ATA_NONSTANDARD is not set
> # CONFIG_ATA_ACPI is not set
> # CONFIG_SATA_PMP is not set
> # CONFIG_SATA_AHCI is not set
> # CONFIG_SATA_SIL24 is not set
> CONFIG_ATA_SFF=y
> # CONFIG_SATA_SVW is not set
> CONFIG_ATA_PIIX=y
> # CONFIG_SATA_MV is not set
> # 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_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_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_CS5535 is not set
> # CONFIG_PATA_CS5536 is not set
> # CONFIG_PATA_CYPRESS is not set
> # CONFIG_PATA_EFAR is not set
> # CONFIG_ATA_GENERIC is not set
> # 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 is not set
> # CONFIG_PATA_MPIIX is not set
> # CONFIG_PATA_OLDPIIX is not set
> # 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_PATA_PLATFORM is not set
> # CONFIG_PATA_SCH is not set
> # CONFIG_MD is not set
> # CONFIG_FUSION is not set
> 
> #
> # IEEE 1394 (FireWire) support
> #
> 
> #
> # Enable only one of the two stacks, unless you know what you are doing
> #
> # 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_DUMMY is not set
> # CONFIG_BONDING is not set
> # CONFIG_MACVLAN is not set
> # CONFIG_EQUALIZER is not set
> # CONFIG_TUN is not set
> # CONFIG_VETH is not set
> # CONFIG_NET_SB1000 is not set
> # CONFIG_ARCNET is not set
> # CONFIG_PHYLIB is not set
> CONFIG_NET_ETHERNET=y
> CONFIG_MII=y
> # CONFIG_HAPPYMEAL is not set
> # CONFIG_SUNGEM is not set
> # CONFIG_CASSINI is not set
> # CONFIG_NET_VENDOR_3COM is not set
> # CONFIG_NET_TULIP is not set
> # CONFIG_HP100 is not set
> # CONFIG_IBM_NEW_EMAC_ZMII is not set
> # CONFIG_IBM_NEW_EMAC_RGMII is not set
> # CONFIG_IBM_NEW_EMAC_TAH is not set
> # CONFIG_IBM_NEW_EMAC_EMAC4 is not set
> # CONFIG_IBM_NEW_EMAC_NO_FLOW_CTRL is not set
> # CONFIG_IBM_NEW_EMAC_MAL_CLR_ICINTSTAT is not set
> # CONFIG_IBM_NEW_EMAC_MAL_COMMON_ERR is not set
> CONFIG_NET_PCI=y
> # CONFIG_PCNET32 is not set
> # CONFIG_AMD8111_ETH is not set
> # CONFIG_ADAPTEC_STARFIRE is not set
> # CONFIG_B44 is not set
> # CONFIG_FORCEDETH is not set
> # CONFIG_EEPRO100 is not set
> # CONFIG_E100 is not set
> # CONFIG_FEALNX is not set
> # CONFIG_NATSEMI is not set
> # CONFIG_NE2K_PCI is not set
> CONFIG_8139CP=y
> # CONFIG_8139TOO is not set
> # CONFIG_R6040 is not set
> # CONFIG_SIS900 is not set
> # CONFIG_EPIC100 is not set
> # CONFIG_SUNDANCE is not set
> # CONFIG_TLAN is not set
> # CONFIG_VIA_RHINE is not set
> # CONFIG_SC92031 is not set
> # CONFIG_ATL2 is not set
> # CONFIG_NETDEV_1000 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_IWLWIFI_LEDS 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=y
> 
> #
> # 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=y
> CONFIG_KEYBOARD_LKKBD=y
> CONFIG_KEYBOARD_XTKBD=y
> CONFIG_KEYBOARD_NEWTON=y
> # CONFIG_KEYBOARD_STOWAWAY is not set
> # CONFIG_INPUT_MOUSE 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 is not set
> # CONFIG_SERIO_CT82C710 is not set
> # CONFIG_SERIO_PCIPS2 is not set
> CONFIG_SERIO_LIBPS2=y
> # CONFIG_SERIO_RAW is not set
> # CONFIG_GAMEPORT is not set
> 
> #
> # Character devices
> #
> CONFIG_VT=y
> CONFIG_CONSOLE_TRANSLATIONS=y
> CONFIG_VT_CONSOLE=y
> CONFIG_HW_CONSOLE=y
> # CONFIG_VT_HW_CONSOLE_BINDING is not set
> # CONFIG_DEVKMEM is not set
> # CONFIG_SERIAL_NONSTANDARD is not set
> # CONFIG_NOZOMI is not set
> 
> #
> # Serial drivers
> #
> # CONFIG_SERIAL_8250 is not set
> CONFIG_FIX_EARLYCON_MEM=y
> 
> #
> # Non-8250 serial port support
> #
> # CONFIG_SERIAL_JSM is not set
> CONFIG_UNIX98_PTYS=y
> CONFIG_LEGACY_PTYS=y
> CONFIG_LEGACY_PTY_COUNT=16
> # CONFIG_IPMI_HANDLER is not set
> CONFIG_HW_RANDOM=y
> CONFIG_HW_RANDOM_INTEL=y
> # CONFIG_HW_RANDOM_AMD is not set
> # CONFIG_HW_RANDOM_GEODE is not set
> # CONFIG_HW_RANDOM_VIA is not set
> CONFIG_NVRAM=y
> # CONFIG_R3964 is not set
> # CONFIG_APPLICOM is not set
> # CONFIG_SONYPI is not set
> # CONFIG_MWAVE is not set
> # CONFIG_PC8736x_GPIO is not set
> # CONFIG_NSC_GPIO is not set
> # CONFIG_CS5535_GPIO is not set
> # CONFIG_RAW_DRIVER is not set
> CONFIG_HPET=y
> CONFIG_HPET_MMAP=y
> # CONFIG_HANGCHECK_TIMER is not set
> # CONFIG_TCG_TPM is not set
> # CONFIG_TELCLOCK is not set
> CONFIG_DEVPORT=y
> # CONFIG_I2C is not set
> # CONFIG_SPI is not set
> CONFIG_ARCH_WANT_OPTIONAL_GPIOLIB=y
> # CONFIG_GPIOLIB 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_CORE is not set
> # CONFIG_MFD_SM501 is not set
> # CONFIG_HTC_PASIC3 is not set
> # CONFIG_MFD_TMIO is not set
> # CONFIG_MFD_WM8400 is not set
> 
> #
> # Multimedia devices
> #
> 
> #
> # Multimedia core support
> #
> # CONFIG_VIDEO_DEV is not set
> # CONFIG_DVB_CORE is not set
> # CONFIG_VIDEO_MEDIA is not set
> 
> #
> # Multimedia drivers
> #
> # CONFIG_DAB is not set
> 
> #
> # Graphics support
> #
> # CONFIG_AGP is not set
> # CONFIG_DRM is not set
> # CONFIG_VGASTATE is not set
> # CONFIG_VIDEO_OUTPUT_CONTROL is not set
> # CONFIG_FB is not set
> # CONFIG_BACKLIGHT_LCD_SUPPORT is not set
> CONFIG_BACKLIGHT_CLASS_DEVICE=y
> # CONFIG_BACKLIGHT_CORGI is not set
> # CONFIG_BACKLIGHT_PROGEAR is not set
> # CONFIG_BACKLIGHT_MBP_NVIDIA is not set
> # CONFIG_BACKLIGHT_SAHARA is not set
> 
> #
> # Display device support
> #
> # CONFIG_DISPLAY_SUPPORT is not set
> 
> #
> # Console display driver support
> #
> CONFIG_VGA_CONSOLE=y
> # CONFIG_VGACON_SOFT_SCROLLBACK is not set
> CONFIG_DUMMY_CONSOLE=y
> # CONFIG_SOUND is not set
> # CONFIG_HID_SUPPORT is not set
> # CONFIG_USB_SUPPORT is not set
> # CONFIG_UWB is not set
> # CONFIG_MMC is not set
> # CONFIG_MEMSTICK is not set
> # CONFIG_NEW_LEDS is not set
> # CONFIG_ACCESSIBILITY is not set
> # CONFIG_INFINIBAND is not set
> # CONFIG_EDAC is not set
> CONFIG_RTC_LIB=y
> CONFIG_RTC_CLASS=y
> CONFIG_RTC_HCTOSYS=y
> CONFIG_RTC_HCTOSYS_DEVICE="rtc0"
> # CONFIG_RTC_DEBUG is not set
> 
> #
> # RTC interfaces
> #
> CONFIG_RTC_INTF_PROC=y
> CONFIG_RTC_INTF_DEV=y
> # CONFIG_RTC_INTF_DEV_UIE_EMUL is not set
> # CONFIG_RTC_DRV_TEST is not set
> 
> #
> # SPI RTC drivers
> #
> 
> #
> # Platform RTC drivers
> #
> CONFIG_RTC_DRV_CMOS=y
> # CONFIG_RTC_DRV_DS1286 is not set
> # CONFIG_RTC_DRV_DS1511 is not set
> # CONFIG_RTC_DRV_DS1553 is not set
> # CONFIG_RTC_DRV_DS1742 is not set
> # CONFIG_RTC_DRV_STK17TA8 is not set
> # CONFIG_RTC_DRV_M48T86 is not set
> # CONFIG_RTC_DRV_M48T35 is not set
> # CONFIG_RTC_DRV_M48T59 is not set
> # CONFIG_RTC_DRV_BQ4802 is not set
> # CONFIG_RTC_DRV_V3020 is not set
> 
> #
> # on-CPU RTC drivers
> #
> # CONFIG_DMADEVICES is not set
> # CONFIG_UIO is not set
> # CONFIG_STAGING is not set
> 
> #
> # Firmware Drivers
> #
> # CONFIG_EDD is not set
> CONFIG_FIRMWARE_MEMMAP=y
> # CONFIG_DELL_RBU is not set
> # CONFIG_DCDBAS is not set
> # CONFIG_DMIID is not set
> # CONFIG_ISCSI_IBFT_FIND is not set
> 
> #
> # File systems
> #
> CONFIG_EXT2_FS=y
> # CONFIG_EXT2_FS_XATTR is not set
> # CONFIG_EXT2_FS_XIP is not set
> CONFIG_EXT3_FS=y
> # CONFIG_EXT3_FS_XATTR is not set
> # CONFIG_EXT4_FS is not set
> CONFIG_JBD=y
> # CONFIG_REISERFS_FS is not set
> # CONFIG_JFS_FS is not set
> # CONFIG_FS_POSIX_ACL is not set
> CONFIG_FILE_LOCKING=y
> # CONFIG_XFS_FS is not set
> # CONFIG_DNOTIFY is not set
> # CONFIG_INOTIFY is not set
> # CONFIG_QUOTA is not set
> # CONFIG_AUTOFS_FS is not set
> # CONFIG_AUTOFS4_FS is not set
> # CONFIG_FUSE_FS is not set
> 
> #
> # 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 is not set
> CONFIG_PROC_SYSCTL=y
> CONFIG_PROC_PAGE_MONITOR=y
> # CONFIG_SYSFS is not set
> CONFIG_TMPFS=y
> # CONFIG_TMPFS_POSIX_ACL is not set
> # CONFIG_HUGETLBFS is not set
> # CONFIG_HUGETLB_PAGE is not set
> 
> #
> # Miscellaneous filesystems
> #
> # CONFIG_ADFS_FS is not set
> # CONFIG_AFFS_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_OMFS_FS is not set
> # CONFIG_HPFS_FS is not set
> # CONFIG_QNX4FS_FS is not set
> # CONFIG_ROMFS_FS is not set
> # CONFIG_SYSV_FS is not set
> # CONFIG_UFS_FS is not set
> # CONFIG_NETWORK_FILESYSTEMS is not set
> 
> #
> # Partition Types
> #
> # CONFIG_PARTITION_ADVANCED is not set
> CONFIG_MSDOS_PARTITION=y
> # CONFIG_NLS is not set
> 
> #
> # Kernel hacking
> #
> CONFIG_TRACE_IRQFLAGS_SUPPORT=y
> CONFIG_PRINTK_TIME=y
> # CONFIG_ENABLE_WARN_DEPRECATED is not set
> # CONFIG_ENABLE_MUST_CHECK is not set
> CONFIG_FRAME_WARN=1024
> CONFIG_MAGIC_SYSRQ=y
> # CONFIG_UNUSED_SYMBOLS is not set
> # CONFIG_HEADERS_CHECK is not set
> CONFIG_DEBUG_KERNEL=y
> # CONFIG_DEBUG_SHIRQ is not set
> CONFIG_DETECT_SOFTLOCKUP=y
> # CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC is not set
> CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC_VALUE=0
> # CONFIG_SCHED_DEBUG is not set
> # CONFIG_SCHEDSTATS is not set
> # CONFIG_TIMER_STATS is not set
> CONFIG_DEBUG_OBJECTS=y
> # CONFIG_DEBUG_OBJECTS_SELFTEST is not set
> CONFIG_DEBUG_OBJECTS_FREE=y
> CONFIG_DEBUG_OBJECTS_TIMERS=y
> CONFIG_DEBUG_SLAB=y
> # CONFIG_DEBUG_SLAB_LEAK is not set
> CONFIG_DEBUG_RT_MUTEXES=y
> CONFIG_DEBUG_PI_LIST=y
> # CONFIG_RT_MUTEX_TESTER is not set
> 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 is not set
> CONFIG_TRACE_IRQFLAGS=y
> CONFIG_DEBUG_SPINLOCK_SLEEP=y
> # CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
> CONFIG_STACKTRACE=y
> # CONFIG_DEBUG_KOBJECT is not set
> CONFIG_DEBUG_HIGHMEM=y
> CONFIG_DEBUG_BUGVERBOSE=y
> CONFIG_DEBUG_INFO=y
> CONFIG_DEBUG_VM=y
> CONFIG_DEBUG_VIRTUAL=y
> CONFIG_DEBUG_WRITECOUNT=y
> CONFIG_DEBUG_MEMORY_INIT=y
> CONFIG_DEBUG_LIST=y
> CONFIG_DEBUG_SG=y
> CONFIG_FRAME_POINTER=y
> # CONFIG_BOOT_PRINTK_DELAY is not set
> # CONFIG_RCU_TORTURE_TEST is not set
> # CONFIG_RCU_CPU_STALL_DETECTOR is not set
> # CONFIG_BACKTRACE_SELF_TEST is not set
> # CONFIG_DEBUG_BLOCK_EXT_DEVT is not set
> # CONFIG_FAULT_INJECTION is not set
> # CONFIG_LATENCYTOP is not set
> CONFIG_SYSCTL_SYSCALL_CHECK=y
> CONFIG_NOP_TRACER=y
> CONFIG_HAVE_FTRACE=y
> CONFIG_HAVE_DYNAMIC_FTRACE=y
> CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
> # CONFIG_FTRACE is not set
> # CONFIG_IRQSOFF_TRACER is not set
> # CONFIG_SYSPROF_TRACER is not set
> # CONFIG_SCHED_TRACER is not set
> # CONFIG_CONTEXT_SWITCH_TRACER is not set
> # CONFIG_BOOT_TRACER is not set
> # CONFIG_STACK_TRACER is not set
> # CONFIG_PROVIDE_OHCI1394_DMA_INIT is not set
> # CONFIG_DYNAMIC_PRINTK_DEBUG is not set
> # CONFIG_SAMPLES is not set
> CONFIG_HAVE_ARCH_KGDB=y
> # CONFIG_KGDB is not set
> CONFIG_STRICT_DEVMEM=y
> CONFIG_X86_VERBOSE_BOOTUP=y
> # CONFIG_EARLY_PRINTK is not set
> # CONFIG_DEBUG_STACKOVERFLOW is not set
> # CONFIG_DEBUG_STACK_USAGE is not set
> CONFIG_DEBUG_PAGEALLOC=y
> # CONFIG_X86_PTDUMP is not set
> CONFIG_DEBUG_RODATA=y
> # CONFIG_DEBUG_RODATA_TEST is not set
> # CONFIG_4KSTACKS is not set
> CONFIG_DOUBLEFAULT=y
> # 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=y
> # CONFIG_IO_DELAY_0XED is not set
> # CONFIG_IO_DELAY_UDELAY is not set
> # CONFIG_IO_DELAY_NONE is not set
> CONFIG_DEFAULT_IO_DELAY_TYPE=0
> # CONFIG_CPA_DEBUG is not set
> # CONFIG_OPTIMIZE_INLINING is not set
> 
> #
> # Security options
> #
> # CONFIG_KEYS is not set
> # CONFIG_SECURITYFS is not set
> # CONFIG_SECURITY_FILE_CAPABILITIES is not set
> # CONFIG_CRYPTO is not set
> CONFIG_HAVE_KVM=y
> # CONFIG_VIRTUALIZATION is not set
> 
> #
> # Library routines
> #
> CONFIG_BITREVERSE=y
> CONFIG_GENERIC_FIND_FIRST_BIT=y
> CONFIG_GENERIC_FIND_NEXT_BIT=y
> CONFIG_CRC_CCITT=y
> # CONFIG_CRC16 is not set
> # CONFIG_CRC_T10DIF 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
-- 
Mathematics is the supreme nostalgia of our time.

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^ permalink raw reply	[flat|nested] 13+ messages in thread

* Re: 2.6.28-rc1: EIP: slab_destroy+0x84/0x142
  2008-10-24 21:38   ` Matt Mackall
@ 2008-10-24 22:09     ` Alexey Dobriyan
  2008-10-24 23:29       ` Christoph Lameter
  0 siblings, 1 reply; 13+ messages in thread
From: Alexey Dobriyan @ 2008-10-24 22:09 UTC (permalink / raw)
  To: Matt Mackall; +Cc: Linus Torvalds, linux-mm, cl, penberg, akpm

On Fri, Oct 24, 2008 at 04:38:38PM -0500, Matt Mackall wrote:
> On Fri, 2008-10-24 at 22:59 +0400, Alexey Dobriyan wrote:
> > Reproducible under KVM during initscripts:
> 
> Not sure what you're trying to tell us here. Are you implying that a
> fault occurred at this line?

Fault occured at slab_destroy in KVM guest kernel.

> Do you have an oops?

Two are below, it seems impossible to copy-paste from KVM window.

> > 	debug_check_no_locks_freed
> > 	free_hot_cold_page
> > 	free_hot_page
> > 	put_page
> > 	free_page_and_swap_cache
> > 	unmap_vmas
> > 	exit_mmap
> > 	mmput
> > 	flush_old_exec
> > 	vfs_read
> > 	kernel_read
> > 	load_elf_binary
> > 	search_binary_handler
> > 	load_elf_binary
> > 	load_elf_binary
> > 	search_binary_handler
> > 	do_execve
> > 	sys_execve
> > 	syscall_call
> > --------------------------------
> > 	kmem_cache_free
> > 	file_free_rcu
> > 	__rcu_process_callbacks
> > 	__do_softirq
> > 	do_softirq
> > 	irq_exit
> > 	do_IRQ
> > 	common_interrupt
> > 	kvm_leave_lazy_mmu
> > 	copy_page_range
> > 	dup_mm
> > 	copy_process
> > 	do_fork
> > 	trace_hardirqs_on
> > 	copy_to_user
> > 	trace_hardirqs_on_thunk
> > 	sys_clone
> > 	syscall_call
> > 
> > EIP: slab_destroy+0x84/0x142
> > 
> > mm/slab.c:1924

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^ permalink raw reply	[flat|nested] 13+ messages in thread

* Re: 2.6.28-rc1: EIP: slab_destroy+0x84/0x142
  2008-10-24 22:09     ` Alexey Dobriyan
@ 2008-10-24 23:29       ` Christoph Lameter
  2008-10-25  0:24         ` Alexey Dobriyan
  0 siblings, 1 reply; 13+ messages in thread
From: Christoph Lameter @ 2008-10-24 23:29 UTC (permalink / raw)
  To: Alexey Dobriyan; +Cc: Matt Mackall, Linus Torvalds, linux-mm, penberg, akpm

On Sat, 25 Oct 2008, Alexey Dobriyan wrote:

> Fault occured at slab_destroy in KVM guest kernel.

Please switch on all SLAB debug options and rerun.

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^ permalink raw reply	[flat|nested] 13+ messages in thread

* Re: 2.6.28-rc1: EIP: slab_destroy+0x84/0x142
  2008-10-24 23:29       ` Christoph Lameter
@ 2008-10-25  0:24         ` Alexey Dobriyan
  2008-10-25  0:30           ` Matt Mackall
  2008-10-25  2:54           ` Alexey Dobriyan
  0 siblings, 2 replies; 13+ messages in thread
From: Alexey Dobriyan @ 2008-10-25  0:24 UTC (permalink / raw)
  To: Christoph Lameter; +Cc: Matt Mackall, Linus Torvalds, linux-mm, penberg, akpm

On Fri, Oct 24, 2008 at 06:29:47PM -0500, Christoph Lameter wrote:
> On Sat, 25 Oct 2008, Alexey Dobriyan wrote:
>
>> Fault occured at slab_destroy in KVM guest kernel.
>
> Please switch on all SLAB debug options and rerun.

They're already on!

New knowledge: turning off just DEBUG_PAGEALLOC makes oops dissapear,
other debugging options don't matter.

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^ permalink raw reply	[flat|nested] 13+ messages in thread

* Re: 2.6.28-rc1: EIP: slab_destroy+0x84/0x142
  2008-10-25  0:24         ` Alexey Dobriyan
@ 2008-10-25  0:30           ` Matt Mackall
  2008-10-25  2:54           ` Alexey Dobriyan
  1 sibling, 0 replies; 13+ messages in thread
From: Matt Mackall @ 2008-10-25  0:30 UTC (permalink / raw)
  To: Alexey Dobriyan
  Cc: Christoph Lameter, Linus Torvalds, linux-mm, penberg, akpm

On Sat, 2008-10-25 at 04:24 +0400, Alexey Dobriyan wrote:
> On Fri, Oct 24, 2008 at 06:29:47PM -0500, Christoph Lameter wrote:
> > On Sat, 25 Oct 2008, Alexey Dobriyan wrote:
> >
> >> Fault occured at slab_destroy in KVM guest kernel.
> >
> > Please switch on all SLAB debug options and rerun.
> 
> They're already on!
> 
> New knowledge: turning off just DEBUG_PAGEALLOC makes oops dissapear,
> other debugging options don't matter.

It's quite possible there's a bad interaction with DEBUG_PAGEALLOC and
the slab redzone logic. The first makes allocations full pages so that
we can later unmap them and detect spurious writes to them while the
second puts a redzone in front of the page (ie potentially in lala
land).

-- 
Mathematics is the supreme nostalgia of our time.

--
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^ permalink raw reply	[flat|nested] 13+ messages in thread

* Re: 2.6.28-rc1: EIP: slab_destroy+0x84/0x142
  2008-10-25  0:24         ` Alexey Dobriyan
  2008-10-25  0:30           ` Matt Mackall
@ 2008-10-25  2:54           ` Alexey Dobriyan
  2008-10-25  3:00             ` Matt Mackall
  2008-10-26 12:30             ` Avi Kivity
  1 sibling, 2 replies; 13+ messages in thread
From: Alexey Dobriyan @ 2008-10-25  2:54 UTC (permalink / raw)
  To: Christoph Lameter
  Cc: Matt Mackall, Linus Torvalds, linux-mm, penberg, akpm, avi

On Sat, Oct 25, 2008 at 04:24:06AM +0400, Alexey Dobriyan wrote:
> On Fri, Oct 24, 2008 at 06:29:47PM -0500, Christoph Lameter wrote:
> > On Sat, 25 Oct 2008, Alexey Dobriyan wrote:
> >
> >> Fault occured at slab_destroy in KVM guest kernel.
> >
> > Please switch on all SLAB debug options and rerun.
> 
> They're already on!
> 
> New knowledge: turning off just DEBUG_PAGEALLOC makes oops dissapear,
> other debugging options don't matter.

Here is typical scenario:
cache -- filp or dentry, ->buffer_size = 4096, objp = c643d000, dbg_redzone1 = c643df78.

Unable to handle ... at c643df7c. which is not next page.

Using -no-kvm switch makes this oops go away, there are strange but rare
other things like half of initscripts processes decides to segfault.
Dunno what is this.

Same picture for different guest kernels: 2.6.26, 2.6.27, 2.6.28-rc1
and different host kernels: 2.6.26-1-686 from to be Debian Lenny, 2.6.27.3
and 2.6.28-rc1.

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^ permalink raw reply	[flat|nested] 13+ messages in thread

* Re: 2.6.28-rc1: EIP: slab_destroy+0x84/0x142
  2008-10-25  2:54           ` Alexey Dobriyan
@ 2008-10-25  3:00             ` Matt Mackall
  2008-10-25  3:20               ` Alexey Dobriyan
  2008-10-26 12:30             ` Avi Kivity
  1 sibling, 1 reply; 13+ messages in thread
From: Matt Mackall @ 2008-10-25  3:00 UTC (permalink / raw)
  To: Alexey Dobriyan
  Cc: Christoph Lameter, Linus Torvalds, linux-mm, penberg, akpm, avi

On Sat, 2008-10-25 at 06:54 +0400, Alexey Dobriyan wrote:
> On Sat, Oct 25, 2008 at 04:24:06AM +0400, Alexey Dobriyan wrote:
> > On Fri, Oct 24, 2008 at 06:29:47PM -0500, Christoph Lameter wrote:
> > > On Sat, 25 Oct 2008, Alexey Dobriyan wrote:
> > >
> > >> Fault occured at slab_destroy in KVM guest kernel.
> > >
> > > Please switch on all SLAB debug options and rerun.
> > 
> > They're already on!
> > 
> > New knowledge: turning off just DEBUG_PAGEALLOC makes oops dissapear,
> > other debugging options don't matter.
> 
> Here is typical scenario:
> cache -- filp or dentry, ->buffer_size = 4096, objp = c643d000, dbg_redzone1 = c643df78.
> 
> Unable to handle ... at c643df7c. which is not next page.

Huh. That sounds more like an actual use-after-free. Possible that the
object is getting freed twice?

There's a call to kernel_map_pages(..., 0) on line 2905 of slab.c.
Commenting it out will nullify the debugging effect of DEBUG_PAGEALLOC
without changing the layout decisions and other behavior. If that kernel
works, that probably means your oops is a genuine use-after-free.

-- 
Mathematics is the supreme nostalgia of our time.

--
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^ permalink raw reply	[flat|nested] 13+ messages in thread

* Re: 2.6.28-rc1: EIP: slab_destroy+0x84/0x142
  2008-10-25  3:00             ` Matt Mackall
@ 2008-10-25  3:20               ` Alexey Dobriyan
  0 siblings, 0 replies; 13+ messages in thread
From: Alexey Dobriyan @ 2008-10-25  3:20 UTC (permalink / raw)
  To: Matt Mackall
  Cc: Christoph Lameter, Linus Torvalds, linux-mm, penberg, akpm, avi

On Fri, Oct 24, 2008 at 10:00:45PM -0500, Matt Mackall wrote:
> On Sat, 2008-10-25 at 06:54 +0400, Alexey Dobriyan wrote:
> > On Sat, Oct 25, 2008 at 04:24:06AM +0400, Alexey Dobriyan wrote:
> > > On Fri, Oct 24, 2008 at 06:29:47PM -0500, Christoph Lameter wrote:
> > > > On Sat, 25 Oct 2008, Alexey Dobriyan wrote:
> > > >
> > > >> Fault occured at slab_destroy in KVM guest kernel.
> > > >
> > > > Please switch on all SLAB debug options and rerun.
> > > 
> > > They're already on!
> > > 
> > > New knowledge: turning off just DEBUG_PAGEALLOC makes oops dissapear,
> > > other debugging options don't matter.
> > 
> > Here is typical scenario:
> > cache -- filp or dentry, ->buffer_size = 4096, objp = c643d000, dbg_redzone1 = c643df78.
> > 
> > Unable to handle ... at c643df7c. which is not next page.
> 
> Huh. That sounds more like an actual use-after-free. Possible that the
> object is getting freed twice?
> 
> There's a call to kernel_map_pages(..., 0) on line 2905 of slab.c.
> Commenting it out will nullify the debugging effect of DEBUG_PAGEALLOC
> without changing the layout decisions and other behavior. If that kernel
> works, that probably means your oops is a genuine use-after-free.

Commenting this code helps very much, looking further...

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^ permalink raw reply	[flat|nested] 13+ messages in thread

* Re: 2.6.28-rc1: EIP: slab_destroy+0x84/0x142
  2008-10-25  2:54           ` Alexey Dobriyan
  2008-10-25  3:00             ` Matt Mackall
@ 2008-10-26 12:30             ` Avi Kivity
  2008-10-26 21:27               ` Alexey Dobriyan
  2008-10-27 14:23               ` Alexey Dobriyan
  1 sibling, 2 replies; 13+ messages in thread
From: Avi Kivity @ 2008-10-26 12:30 UTC (permalink / raw)
  To: Alexey Dobriyan
  Cc: Christoph Lameter, Matt Mackall, Linus Torvalds, linux-mm, penberg, akpm

Alexey Dobriyan wrote:
> Same picture for different guest kernels: 2.6.26, 2.6.27, 2.6.28-rc1
> and different host kernels: 2.6.26-1-686 from to be Debian Lenny, 2.6.27.3
> and 2.6.28-rc1.
>   

Does this go away with !CONFIG_KVM_GUEST on the guest kernel?

This only makes sense if you're using the kvm modules from kvm-77.  If 
so, you can also try http://userweb.kernel.org/~avi/kvm-78rc1.tar.gz 
which fixes a bug with CONFIG_KVM_GUEST.

-- 
error compiling committee.c: too many arguments to function

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^ permalink raw reply	[flat|nested] 13+ messages in thread

* Re: 2.6.28-rc1: EIP: slab_destroy+0x84/0x142
  2008-10-26 12:30             ` Avi Kivity
@ 2008-10-26 21:27               ` Alexey Dobriyan
  2008-10-27 14:23               ` Alexey Dobriyan
  1 sibling, 0 replies; 13+ messages in thread
From: Alexey Dobriyan @ 2008-10-26 21:27 UTC (permalink / raw)
  To: Avi Kivity
  Cc: Christoph Lameter, Matt Mackall, Linus Torvalds, linux-mm, penberg, akpm

On Sun, Oct 26, 2008 at 02:30:52PM +0200, Avi Kivity wrote:
> Alexey Dobriyan wrote:
>> Same picture for different guest kernels: 2.6.26, 2.6.27, 2.6.28-rc1
>> and different host kernels: 2.6.26-1-686 from to be Debian Lenny, 2.6.27.3
>> and 2.6.28-rc1.
>>   
>
> Does this go away with !CONFIG_KVM_GUEST on the guest kernel?
>
> This only makes sense if you're using the kvm modules from kvm-77.  If  
> so, you can also try http://userweb.kernel.org/~avi/kvm-78rc1.tar.gz  
> which fixes a bug with CONFIG_KVM_GUEST.

KVM_GUEST=n definitely helps.

This is kvm-72+dfsg-2 from soon-to-be-lenny.

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^ permalink raw reply	[flat|nested] 13+ messages in thread

* Re: 2.6.28-rc1: EIP: slab_destroy+0x84/0x142
  2008-10-26 12:30             ` Avi Kivity
  2008-10-26 21:27               ` Alexey Dobriyan
@ 2008-10-27 14:23               ` Alexey Dobriyan
  2008-10-27 14:24                 ` Avi Kivity
  1 sibling, 1 reply; 13+ messages in thread
From: Alexey Dobriyan @ 2008-10-27 14:23 UTC (permalink / raw)
  To: Avi Kivity
  Cc: Christoph Lameter, Matt Mackall, Linus Torvalds, linux-mm, penberg, akpm

On Sun, Oct 26, 2008 at 02:30:52PM +0200, Avi Kivity wrote:
> Alexey Dobriyan wrote:
>> Same picture for different guest kernels: 2.6.26, 2.6.27, 2.6.28-rc1
>> and different host kernels: 2.6.26-1-686 from to be Debian Lenny, 2.6.27.3
>> and 2.6.28-rc1.
>>   
>
> Does this go away with !CONFIG_KVM_GUEST on the guest kernel?
>
> This only makes sense if you're using the kvm modules from kvm-77.  If  
> so, you can also try http://userweb.kernel.org/~avi/kvm-78rc1.tar.gz  
> which fixes a bug with CONFIG_KVM_GUEST.

Er, which commmit exactly?

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^ permalink raw reply	[flat|nested] 13+ messages in thread

* Re: 2.6.28-rc1: EIP: slab_destroy+0x84/0x142
  2008-10-27 14:23               ` Alexey Dobriyan
@ 2008-10-27 14:24                 ` Avi Kivity
  0 siblings, 0 replies; 13+ messages in thread
From: Avi Kivity @ 2008-10-27 14:24 UTC (permalink / raw)
  To: Alexey Dobriyan
  Cc: Christoph Lameter, Matt Mackall, Linus Torvalds, linux-mm, penberg, akpm

Alexey Dobriyan wrote:
> On Sun, Oct 26, 2008 at 02:30:52PM +0200, Avi Kivity wrote:
>   
>> Alexey Dobriyan wrote:
>>     
>>> Same picture for different guest kernels: 2.6.26, 2.6.27, 2.6.28-rc1
>>> and different host kernels: 2.6.26-1-686 from to be Debian Lenny, 2.6.27.3
>>> and 2.6.28-rc1.
>>>   
>>>       
>> Does this go away with !CONFIG_KVM_GUEST on the guest kernel?
>>
>> This only makes sense if you're using the kvm modules from kvm-77.  If  
>> so, you can also try http://userweb.kernel.org/~avi/kvm-78rc1.tar.gz  
>> which fixes a bug with CONFIG_KVM_GUEST.
>>     
>
> Er, which commmit exactly?
>   
e74bb3fa ("KVM: MMU: sync root on paravirt TLB flush") in kvm.git; it's 
not yet in mainline.

(apply to host, not guest)

-- 
error compiling committee.c: too many arguments to function

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^ permalink raw reply	[flat|nested] 13+ messages in thread

end of thread, other threads:[~2008-10-27 14:24 UTC | newest]

Thread overview: 13+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
     [not found] <alpine.LFD.2.00.0810232028500.3287@nehalem.linux-foundation.org>
2008-10-24 18:59 ` 2.6.28-rc1: EIP: slab_destroy+0x84/0x142 Alexey Dobriyan
2008-10-24 21:38   ` Matt Mackall
2008-10-24 22:09     ` Alexey Dobriyan
2008-10-24 23:29       ` Christoph Lameter
2008-10-25  0:24         ` Alexey Dobriyan
2008-10-25  0:30           ` Matt Mackall
2008-10-25  2:54           ` Alexey Dobriyan
2008-10-25  3:00             ` Matt Mackall
2008-10-25  3:20               ` Alexey Dobriyan
2008-10-26 12:30             ` Avi Kivity
2008-10-26 21:27               ` Alexey Dobriyan
2008-10-27 14:23               ` Alexey Dobriyan
2008-10-27 14:24                 ` Avi Kivity

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