Hi,
I got this oops on 2.6.24-rc1-641-gb4f5550:
[18073.371126] Unable to handle kernel NULL pointer dereference at 0000000000000120 RIP:
[18073.371134] [<ffffffff8023572e>] check_preempt_wakeup+0x6e/0x110
[18073.371144] PGD 81f9067 PUD 81c8067 PMD 0
[18073.371151] Oops: 0000 [1] PREEMPT SMP
[18073.371157] CPU 2
[18073.371161] Modules linked in: vfat fat
[18073.371168] Pid: 4639, comm: kwin Not tainted 2.6.24-rc1 #1
[18073.371171] RIP: 0010:[<ffffffff8023572e>] [<ffffffff8023572e>] check_preempt_wakeup+0x6e/0x110
[18073.371177] RSP: 0018:ffff810008531a78 EFLAGS: 00010006
[18073.371179] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[18073.371183] RDX: ffff810004441bf0 RSI: ffff81000801e860 RDI: ffff81000444ab80
[18073.371186] RBP: ffff810008531aa8 R08: 000000d0d47a4a90 R09: 0000000000000000
[18073.371188] R10: ffff810004441bf0 R11: 0000000000000001 R12: ffff810006520400
[18073.371190] R13: ffff81000801e860 R14: ffff81000a63a000 R15: ffff81000443d8e0
[18073.371193] FS: 00002b7d646a86f0(0000) GS:ffff810004c11780(0000) knlGS:0000000000000000
[18073.371196] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[18073.371199] CR2: 0000000000000120 CR3: 0000000008495000 CR4: 00000000000006e0
[18073.371202] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[18073.371211] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[18073.371214] Process kwin (pid: 4639, threadinfo ffff810008530000, task ffff81000840a860)
[18073.371216] Stack: ffff81000444ab80 0000000000000001 ffff81000801e860 ffff81000444ab80
[18073.371231] 0000000000000002 ffff81000443d8e0 ffff810008531b38 ffffffff8023061e
[18073.371238] 0000000000000000 ffff810004441b80 0000000000000002 0000000100000000
[18073.371245] Call Trace:
[18073.371250] [<ffffffff8023061e>] try_to_wake_up+0x2fe/0x3a0
[18073.371253] [<ffffffff802306cd>] default_wake_function+0xd/0x10
[18073.371257] [<ffffffff8022daca>] __wake_up_common+0x5a/0x90
[18073.371260] [<ffffffff8023095a>] __wake_up_sync+0x4a/0x70
[18073.371264] [<ffffffff80602c3f>] unix_write_space+0x8f/0xa0
[18073.371269] [<ffffffff80593359>] sock_wfree+0x49/0x50
[18073.371272] [<ffffffff805951d9>] __kfree_skb+0x69/0xe0
[18073.371275] [<ffffffff80595267>] kfree_skb+0x17/0x30
[18073.371278] [<ffffffff80601347>] unix_stream_recvmsg+0x267/0x610
[18073.371283] [<ffffffff8058e0b7>] sock_aio_read+0x107/0x110
[18073.371287] [<ffffffff802929a1>] do_sync_read+0xf1/0x130
[18073.371291] [<ffffffff8058e230>] sock_ioctl+0x0/0x260
[18073.371295] [<ffffffff80251830>] autoremove_wake_function+0x0/0x40
[18073.371299] [<ffffffff80600522>] unix_ioctl+0xb2/0xf0
[18073.371302] [<ffffffff8058e301>] sock_ioctl+0xd1/0x260
[18073.371305] [<ffffffff802a00c1>] do_ioctl+0x31/0x90
[18073.371308] [<ffffffff802932f6>] vfs_read+0x156/0x160
[18073.371311] [<ffffffff80293700>] sys_read+0x50/0x90
[18073.371315] [<ffffffff8020bd7e>] system_call+0x7e/0x83
[18073.371317]
[18073.371319]
[18073.371319] Code: 48 8b 90 20 01 00 00 48 39 93 20 01 00 00 75 e2 48 81 3b 00
[18073.371346] RIP [<ffffffff8023572e>] check_preempt_wakeup+0x6e/0x110
[18073.371351] RSP <ffff810008531a78>
[18073.371354] CR2: 0000000000000120
[18073.371358] note: kwin[4639] exited with preempt_count 3
Here's my config:
#
# Automatically generated make config: don't edit
# Linux kernel version: 2.6.24-rc1
# Sun Nov 4 13:21:29 2007
#
CONFIG_X86_64=y
CONFIG_64BIT=y
CONFIG_X86=y
CONFIG_GENERIC_TIME=y
CONFIG_GENERIC_TIME_VSYSCALL=y
CONFIG_GENERIC_CMOS_UPDATE=y
CONFIG_CLOCKSOURCE_WATCHDOG=y
CONFIG_GENERIC_CLOCKEVENTS=y
CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y
CONFIG_ZONE_DMA32=y
CONFIG_LOCKDEP_SUPPORT=y
CONFIG_STACKTRACE_SUPPORT=y
CONFIG_SEMAPHORE_SLEEPERS=y
CONFIG_MMU=y
CONFIG_ZONE_DMA=y
CONFIG_RWSEM_GENERIC_SPINLOCK=y
CONFIG_GENERIC_HWEIGHT=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
CONFIG_X86_CMPXCHG=y
CONFIG_GENERIC_ISA_DMA=y
CONFIG_GENERIC_IOMAP=y
CONFIG_ARCH_MAY_HAVE_PC_FDC=y
CONFIG_ARCH_POPULATES_NODE_MAP=y
CONFIG_DMI=y
CONFIG_AUDIT_ARCH=y
CONFIG_GENERIC_BUG=y
# CONFIG_ARCH_HAS_ILOG2_U32 is not set
# CONFIG_ARCH_HAS_ILOG2_U64 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=y
CONFIG_SWAP=y
CONFIG_SYSVIPC=y
CONFIG_SYSVIPC_SYSCTL=y
CONFIG_POSIX_MQUEUE=y
CONFIG_BSD_PROCESS_ACCT=y
# CONFIG_BSD_PROCESS_ACCT_V3 is not set
# CONFIG_TASKSTATS is not set
# CONFIG_USER_NS is not set
# CONFIG_AUDIT is not set
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
CONFIG_LOG_BUF_SHIFT=17
# CONFIG_CGROUPS is not set
CONFIG_FAIR_GROUP_SCHED=y
CONFIG_FAIR_USER_SCHED=y
# CONFIG_FAIR_CGROUP_SCHED is not set
# CONFIG_SYSFS_DEPRECATED is not set
# CONFIG_RELAY is not set
CONFIG_BLK_DEV_INITRD=y
CONFIG_INITRAMFS_SOURCE=""
# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
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 is not set
CONFIG_HOTPLUG=y
CONFIG_PRINTK=y
CONFIG_BUG=y
CONFIG_ELF_CORE=y
CONFIG_BASE_FULL=y
CONFIG_FUTEX=y
CONFIG_ANON_INODES=y
CONFIG_EPOLL=y
CONFIG_SIGNALFD=y
CONFIG_EVENTFD=y
CONFIG_SHMEM=y
CONFIG_VM_EVENT_COUNTERS=y
CONFIG_SLUB_DEBUG=y
# CONFIG_SLAB is not set
CONFIG_SLUB=y
# CONFIG_SLOB is not set
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 is not set
CONFIG_KMOD=y
CONFIG_STOP_MACHINE=y
CONFIG_BLOCK=y
# CONFIG_BLK_DEV_IO_TRACE is not set
CONFIG_BLK_DEV_BSG=y
CONFIG_BLOCK_COMPAT=y
#
# IO Schedulers
#
CONFIG_IOSCHED_NOOP=y
CONFIG_IOSCHED_AS=y
CONFIG_IOSCHED_DEADLINE=y
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"
#
# Processor type and features
#
CONFIG_TICK_ONESHOT=y
CONFIG_NO_HZ=y
# CONFIG_HIGH_RES_TIMERS is not set
CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
CONFIG_X86_PC=y
# CONFIG_X86_VSMP is not set
# CONFIG_MK8 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_L1_CACHE_SHIFT=6
CONFIG_X86_INTERNODE_CACHE_BYTES=64
CONFIG_X86_TSC=y
CONFIG_X86_GOOD_APIC=y
CONFIG_MICROCODE=m
CONFIG_MICROCODE_OLD_INTERFACE=y
CONFIG_X86_MSR=m
CONFIG_X86_CPUID=m
CONFIG_X86_HT=y
CONFIG_X86_IO_APIC=y
CONFIG_X86_LOCAL_APIC=y
CONFIG_MTRR=y
CONFIG_SMP=y
# CONFIG_SCHED_SMT is not set
CONFIG_SCHED_MC=y
# CONFIG_PREEMPT_NONE is not set
# CONFIG_PREEMPT_VOLUNTARY is not set
CONFIG_PREEMPT=y
CONFIG_PREEMPT_BKL=y
# CONFIG_NUMA is not set
CONFIG_ARCH_SPARSEMEM_ENABLE=y
CONFIG_ARCH_FLATMEM_ENABLE=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 is not set
CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y
CONFIG_SPLIT_PTLOCK_CPUS=4
CONFIG_RESOURCES_64BIT=y
CONFIG_ZONE_DMA_FLAG=1
CONFIG_BOUNCE=y
CONFIG_VIRT_TO_BUS=y
CONFIG_NR_CPUS=8
CONFIG_PHYSICAL_ALIGN=0x200000
CONFIG_HOTPLUG_CPU=y
CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y
CONFIG_HPET_TIMER=y
CONFIG_GART_IOMMU=y
# CONFIG_CALGARY_IOMMU is not set
CONFIG_SWIOTLB=y
CONFIG_X86_MCE=y
CONFIG_X86_MCE_INTEL=y
# CONFIG_X86_MCE_AMD is not set
# CONFIG_KEXEC is not set
# CONFIG_CRASH_DUMP is not set
# CONFIG_RELOCATABLE is not set
CONFIG_PHYSICAL_START=0x200000
# CONFIG_SECCOMP is not set
# CONFIG_CC_STACKPROTECTOR is not set
# 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_K8_NB=y
CONFIG_GENERIC_HARDIRQS=y
CONFIG_GENERIC_IRQ_PROBE=y
CONFIG_ISA_DMA_API=y
CONFIG_GENERIC_PENDING_IRQ=y
#
# Power management options
#
CONFIG_PM=y
CONFIG_PM_LEGACY=y
# CONFIG_PM_DEBUG is not set
CONFIG_SUSPEND_SMP_POSSIBLE=y
# CONFIG_SUSPEND is not set
CONFIG_HIBERNATION_SMP_POSSIBLE=y
# CONFIG_HIBERNATION is not set
CONFIG_ACPI=y
# CONFIG_ACPI_PROCFS is not set
CONFIG_ACPI_PROC_EVENT=y
# CONFIG_ACPI_AC is not set
# CONFIG_ACPI_BATTERY is not set
CONFIG_ACPI_BUTTON=y
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_ASUS is not set
# CONFIG_ACPI_TOSHIBA is not set
CONFIG_ACPI_BLACKLIST_YEAR=0
CONFIG_ACPI_DEBUG=y
# CONFIG_ACPI_DEBUG_FUNC_TRACE 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_SBS is not set
#
# CPU Frequency scaling
#
CONFIG_CPU_FREQ=y
CONFIG_CPU_FREQ_TABLE=y
# CONFIG_CPU_FREQ_DEBUG is not set
CONFIG_CPU_FREQ_STAT=y
CONFIG_CPU_FREQ_STAT_DETAILS=y
CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y
# CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set
CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
# CONFIG_CPU_FREQ_GOV_POWERSAVE is not set
# CONFIG_CPU_FREQ_GOV_USERSPACE is not set
CONFIG_CPU_FREQ_GOV_ONDEMAND=y
# CONFIG_CPU_FREQ_GOV_CONSERVATIVE is not set
#
# CPUFreq processor drivers
#
# CONFIG_X86_POWERNOW_K8 is not set
# CONFIG_X86_SPEEDSTEP_CENTRINO is not set
CONFIG_X86_ACPI_CPUFREQ=y
#
# shared options
#
# CONFIG_X86_ACPI_CPUFREQ_PROC_INTF is not set
# CONFIG_X86_SPEEDSTEP_LIB is not set
# CONFIG_CPU_IDLE is not set
#
# 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_PCIEAER=y
CONFIG_ARCH_SUPPORTS_MSI=y
CONFIG_PCI_MSI=y
# CONFIG_PCI_DEBUG is not set
CONFIG_HT_IRQ=y
# CONFIG_PCCARD is not set
# CONFIG_HOTPLUG_PCI is not set
#
# Executable file formats / Emulations
#
CONFIG_BINFMT_ELF=y
CONFIG_BINFMT_MISC=m
CONFIG_IA32_EMULATION=y
CONFIG_IA32_AOUT=y
CONFIG_COMPAT=y
CONFIG_COMPAT_FOR_U64_ALIGNMENT=y
CONFIG_SYSVIPC_COMPAT=y
#
# Networking
#
CONFIG_NET=y
#
# Networking options
#
CONFIG_PACKET=m
CONFIG_PACKET_MMAP=y
CONFIG_UNIX=y
CONFIG_XFRM=y
CONFIG_XFRM_USER=m
# CONFIG_XFRM_SUB_POLICY is not set
# CONFIG_XFRM_MIGRATE is not set
CONFIG_NET_KEY=y
# CONFIG_NET_KEY_MIGRATE is not set
CONFIG_INET=y
CONFIG_IP_MULTICAST=y
CONFIG_IP_ADVANCED_ROUTER=y
CONFIG_ASK_IP_FIB_HASH=y
# CONFIG_IP_FIB_TRIE is not set
CONFIG_IP_FIB_HASH=y
CONFIG_IP_MULTIPLE_TABLES=y
CONFIG_IP_ROUTE_MULTIPATH=y
CONFIG_IP_ROUTE_VERBOSE=y
# CONFIG_IP_PNP is not set
# CONFIG_NET_IPIP is not set
# CONFIG_NET_IPGRE is not set
CONFIG_IP_MROUTE=y
CONFIG_IP_PIMSM_V1=y
CONFIG_IP_PIMSM_V2=y
# CONFIG_ARPD is not set
CONFIG_SYN_COOKIES=y
CONFIG_INET_AH=y
CONFIG_INET_ESP=m
CONFIG_INET_IPCOMP=m
CONFIG_INET_XFRM_TUNNEL=m
CONFIG_INET_TUNNEL=y
CONFIG_INET_XFRM_MODE_TRANSPORT=y
CONFIG_INET_XFRM_MODE_TUNNEL=y
CONFIG_INET_XFRM_MODE_BEET=y
# CONFIG_INET_LRO is not set
CONFIG_INET_DIAG=y
CONFIG_INET_TCP_DIAG=y
CONFIG_TCP_CONG_ADVANCED=y
CONFIG_TCP_CONG_BIC=y
CONFIG_TCP_CONG_CUBIC=m
CONFIG_TCP_CONG_WESTWOOD=y
CONFIG_TCP_CONG_HTCP=y
# CONFIG_TCP_CONG_HSTCP is not set
# CONFIG_TCP_CONG_HYBLA is not set
# CONFIG_TCP_CONG_VEGAS is not set
# CONFIG_TCP_CONG_SCALABLE is not set
# CONFIG_TCP_CONG_LP is not set
# CONFIG_TCP_CONG_VENO is not set
# CONFIG_TCP_CONG_YEAH is not set
# CONFIG_TCP_CONG_ILLINOIS is not set
CONFIG_DEFAULT_BIC=y
# CONFIG_DEFAULT_CUBIC is not set
# CONFIG_DEFAULT_HTCP is not set
# CONFIG_DEFAULT_VEGAS is not set
# CONFIG_DEFAULT_WESTWOOD is not set
# CONFIG_DEFAULT_RENO is not set
CONFIG_DEFAULT_TCP_CONG="bic"
# CONFIG_TCP_MD5SIG is not set
CONFIG_IPV6=y
CONFIG_IPV6_PRIVACY=y
# CONFIG_IPV6_ROUTER_PREF is not set
# CONFIG_IPV6_OPTIMISTIC_DAD is not set
CONFIG_INET6_AH=y
CONFIG_INET6_ESP=y
CONFIG_INET6_IPCOMP=y
# CONFIG_IPV6_MIP6 is not set
CONFIG_INET6_XFRM_TUNNEL=y
CONFIG_INET6_TUNNEL=y
CONFIG_INET6_XFRM_MODE_TRANSPORT=y
CONFIG_INET6_XFRM_MODE_TUNNEL=y
CONFIG_INET6_XFRM_MODE_BEET=y
# CONFIG_INET6_XFRM_MODE_ROUTEOPTIMIZATION is not set
CONFIG_IPV6_SIT=y
CONFIG_IPV6_TUNNEL=y
# CONFIG_IPV6_MULTIPLE_TABLES is not set
# CONFIG_NETWORK_SECMARK is not set
# CONFIG_NETFILTER is not set
# CONFIG_IP_DCCP is not set
CONFIG_IP_SCTP=m
# CONFIG_SCTP_DBG_MSG is not set
# CONFIG_SCTP_DBG_OBJCNT is not set
# CONFIG_SCTP_HMAC_NONE is not set
# CONFIG_SCTP_HMAC_SHA1 is not set
CONFIG_SCTP_HMAC_MD5=y
# 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
CONFIG_NET_SCH_FIFO=y
#
# Network testing
#
CONFIG_NET_PKTGEN=m
# CONFIG_HAMRADIO is not set
# CONFIG_IRDA is not set
# CONFIG_BT is not set
# CONFIG_AF_RXRPC is not set
CONFIG_FIB_RULES=y
#
# Wireless
#
CONFIG_CFG80211=y
CONFIG_NL80211=y
CONFIG_WIRELESS_EXT=y
CONFIG_MAC80211=y
CONFIG_MAC80211_DEBUGFS=y
CONFIG_MAC80211_DEBUG=y
# CONFIG_MAC80211_VERBOSE_DEBUG is not set
# CONFIG_MAC80211_LOWTX_FRAME_DUMP is not set
# CONFIG_TKIP_DEBUG is not set
CONFIG_MAC80211_DEBUG_COUNTERS=y
# CONFIG_MAC80211_IBSS_DEBUG is not set
# CONFIG_MAC80211_VERBOSE_PS_DEBUG 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 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 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=y
CONFIG_BLK_DEV_CRYPTOLOOP=m
CONFIG_BLK_DEV_NBD=m
# CONFIG_BLK_DEV_SX8 is not set
# CONFIG_BLK_DEV_UB is not set
CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_COUNT=16
CONFIG_BLK_DEV_RAM_SIZE=65536
CONFIG_BLK_DEV_RAM_BLOCKSIZE=1024
# CONFIG_CDROM_PKTCDVD is not set
# CONFIG_ATA_OVER_ETH is not set
# CONFIG_MISC_DEVICES is not set
# 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=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=y
# CONFIG_BLK_DEV_SR_VENDOR 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 is not set
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_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 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_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 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_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_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 is not set
# CONFIG_MD_RAID0 is not set
CONFIG_MD_RAID1=y
# CONFIG_MD_RAID10 is not set
# CONFIG_MD_RAID456 is not set
# CONFIG_MD_MULTIPATH is not set
# CONFIG_MD_FAULTY is not set
CONFIG_BLK_DEV_DM=y
# CONFIG_DM_DEBUG is not set
# CONFIG_DM_CRYPT is not set
# CONFIG_DM_SNAPSHOT is not set
# CONFIG_DM_MIRROR is not set
# CONFIG_DM_ZERO is not set
# CONFIG_DM_MULTIPATH is not set
# CONFIG_DM_DELAY is not set
# 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 is not set
# CONFIG_VETH is not set
# CONFIG_NET_SB1000 is not set
# CONFIG_IP1000 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 is not set
CONFIG_E1000E=y
# CONFIG_NS83820 is not set
# CONFIG_HAMACHI is not set
# CONFIG_YELLOWFIN is not set
CONFIG_R8169=y
CONFIG_R8169_NAPI=y
# CONFIG_SIS190 is not set
# CONFIG_SKGE is not set
CONFIG_SKY2=y
# CONFIG_SKY2_DEBUG 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
#
# USB Network Adapters
#
# CONFIG_USB_CATC is not set
# CONFIG_USB_KAWETH is not set
# CONFIG_USB_PEGASUS is not set
# CONFIG_USB_RTL8150 is not set
# CONFIG_USB_USBNET_MII is not set
# CONFIG_USB_USBNET 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_SHAPER is not set
CONFIG_NETCONSOLE=y
# CONFIG_NETCONSOLE_DYNAMIC is not set
CONFIG_NETPOLL=y
# CONFIG_NETPOLL_TRAP is not set
CONFIG_NET_POLL_CONTROLLER=y
# 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=y
CONFIG_INPUT_MOUSEDEV_SCREEN_X=1280
CONFIG_INPUT_MOUSEDEV_SCREEN_Y=1024
# 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_APPLETOUCH 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=m
# 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_VT_CONSOLE=y
CONFIG_HW_CONSOLE=y
# CONFIG_VT_HW_CONSOLE_BINDING is not set
# CONFIG_SERIAL_NONSTANDARD 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=4
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 is not set
CONFIG_SERIAL_8250_RSA=y
#
# 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=y
CONFIG_HW_RANDOM_INTEL=y
CONFIG_HW_RANDOM_AMD=y
CONFIG_NVRAM=m
# 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=y
CONFIG_I2C_BOARDINFO=y
CONFIG_I2C_CHARDEV=y
#
# I2C Algorithms
#
CONFIG_I2C_ALGOBIT=y
# CONFIG_I2C_ALGOPCF is not set
# CONFIG_I2C_ALGOPCA is not set
#
# I2C Hardware Bus support
#
# CONFIG_I2C_ALI1535 is not set
# CONFIG_I2C_ALI1563 is not set
# CONFIG_I2C_ALI15X3 is not set
# CONFIG_I2C_AMD756 is not set
# CONFIG_I2C_AMD8111 is not set
CONFIG_I2C_I801=y
CONFIG_I2C_I810=y
# CONFIG_I2C_PIIX4 is not set
CONFIG_I2C_NFORCE2=y
# CONFIG_I2C_OCORES is not set
# CONFIG_I2C_PARPORT_LIGHT is not set
# CONFIG_I2C_PROSAVAGE is not set
# CONFIG_I2C_SAVAGE4 is not set
# CONFIG_I2C_SIMTEC is not set
# CONFIG_I2C_SIS5595 is not set
# CONFIG_I2C_SIS630 is not set
# CONFIG_I2C_SIS96X is not set
# CONFIG_I2C_TAOS_EVM is not set
# CONFIG_I2C_STUB is not set
# CONFIG_I2C_TINY_USB is not set
# CONFIG_I2C_VIA is not set
# CONFIG_I2C_VIAPRO is not set
# CONFIG_I2C_VOODOO3 is not set
#
# Miscellaneous I2C Chip support
#
# CONFIG_SENSORS_DS1337 is not set
# CONFIG_SENSORS_DS1374 is not set
# CONFIG_DS1682 is not set
# CONFIG_SENSORS_EEPROM is not set
# CONFIG_SENSORS_PCF8574 is not set
# CONFIG_SENSORS_PCA9539 is not set
# CONFIG_SENSORS_PCF8591 is not set
# CONFIG_SENSORS_MAX6875 is not set
# CONFIG_SENSORS_TSL2550 is not set
# CONFIG_I2C_DEBUG_CORE is not set
# CONFIG_I2C_DEBUG_ALGO is not set
# CONFIG_I2C_DEBUG_BUS is not set
# CONFIG_I2C_DEBUG_CHIP is not set
#
# SPI support
#
# CONFIG_SPI is not set
# CONFIG_SPI_MASTER is not set
# CONFIG_W1 is not set
# CONFIG_POWER_SUPPLY is not set
CONFIG_HWMON=y
CONFIG_HWMON_VID=y
# CONFIG_SENSORS_ABITUGURU is not set
# CONFIG_SENSORS_ABITUGURU3 is not set
# CONFIG_SENSORS_AD7418 is not set
# CONFIG_SENSORS_ADM1021 is not set
# CONFIG_SENSORS_ADM1025 is not set
# CONFIG_SENSORS_ADM1026 is not set
# CONFIG_SENSORS_ADM1029 is not set
# CONFIG_SENSORS_ADM1031 is not set
# CONFIG_SENSORS_ADM9240 is not set
# CONFIG_SENSORS_ADT7470 is not set
# CONFIG_SENSORS_K8TEMP is not set
# CONFIG_SENSORS_ASB100 is not set
# CONFIG_SENSORS_ATXP1 is not set
# CONFIG_SENSORS_DS1621 is not set
# CONFIG_SENSORS_F71805F is not set
# CONFIG_SENSORS_F71882FG is not set
# CONFIG_SENSORS_F75375S is not set
# CONFIG_SENSORS_FSCHER is not set
# CONFIG_SENSORS_FSCPOS is not set
# CONFIG_SENSORS_FSCHMD is not set
# CONFIG_SENSORS_GL518SM is not set
# CONFIG_SENSORS_GL520SM is not set
CONFIG_SENSORS_CORETEMP=y
CONFIG_SENSORS_IT87=y
# CONFIG_SENSORS_LM63 is not set
# CONFIG_SENSORS_LM75 is not set
# CONFIG_SENSORS_LM77 is not set
# CONFIG_SENSORS_LM78 is not set
# CONFIG_SENSORS_LM80 is not set
# CONFIG_SENSORS_LM83 is not set
# CONFIG_SENSORS_LM85 is not set
# CONFIG_SENSORS_LM87 is not set
# CONFIG_SENSORS_LM90 is not set
# CONFIG_SENSORS_LM92 is not set
# CONFIG_SENSORS_LM93 is not set
# CONFIG_SENSORS_MAX1619 is not set
# CONFIG_SENSORS_MAX6650 is not set
# CONFIG_SENSORS_PC87360 is not set
# CONFIG_SENSORS_PC87427 is not set
# CONFIG_SENSORS_SIS5595 is not set
# CONFIG_SENSORS_DME1737 is not set
# CONFIG_SENSORS_SMSC47M1 is not set
# CONFIG_SENSORS_SMSC47M192 is not set
# CONFIG_SENSORS_SMSC47B397 is not set
# CONFIG_SENSORS_THMC50 is not set
# CONFIG_SENSORS_VIA686A is not set
# CONFIG_SENSORS_VT1211 is not set
# CONFIG_SENSORS_VT8231 is not set
# CONFIG_SENSORS_W83781D is not set
# CONFIG_SENSORS_W83791D is not set
# CONFIG_SENSORS_W83792D is not set
# CONFIG_SENSORS_W83793 is not set
# CONFIG_SENSORS_W83L785TS is not set
# CONFIG_SENSORS_W83627HF is not set
CONFIG_SENSORS_W83627EHF=y
# CONFIG_SENSORS_HDAPS is not set
# CONFIG_SENSORS_APPLESMC is not set
# CONFIG_HWMON_DEBUG_CHIP is not set
# 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 is not set
# CONFIG_AGP_SIS is not set
# CONFIG_AGP_VIA is not set
CONFIG_DRM=y
# CONFIG_DRM_TDFX is not set
# CONFIG_DRM_R128 is not set
# CONFIG_DRM_RADEON is not set
# CONFIG_DRM_MGA is not set
# CONFIG_DRM_SIS is not set
# CONFIG_DRM_VIA is not set
# CONFIG_DRM_SAVAGE is not set
# CONFIG_VGASTATE is not set
# CONFIG_VIDEO_OUTPUT_CONTROL is not set
CONFIG_FB=y
CONFIG_FIRMWARE_EDID=y
CONFIG_FB_DDC=y
CONFIG_FB_CFB_FILLRECT=y
CONFIG_FB_CFB_COPYAREA=y
CONFIG_FB_CFB_IMAGEBLIT=y
# CONFIG_FB_CFB_REV_PIXELS_IN_BYTE is not set
# CONFIG_FB_SYS_FILLRECT is not set
# CONFIG_FB_SYS_COPYAREA is not set
# CONFIG_FB_SYS_IMAGEBLIT is not set
# CONFIG_FB_SYS_FOPS is not set
CONFIG_FB_DEFERRED_IO=y
# CONFIG_FB_SVGALIB is not set
# CONFIG_FB_MACMODES is not set
CONFIG_FB_BACKLIGHT=y
CONFIG_FB_MODE_HELPERS=y
CONFIG_FB_TILEBLITTING=y
#
# Frame buffer hardware drivers
#
# CONFIG_FB_CIRRUS is not set
# CONFIG_FB_PM2 is not set
# CONFIG_FB_CYBER2000 is not set
# CONFIG_FB_ARC is not set
# CONFIG_FB_ASILIANT is not set
# CONFIG_FB_IMSTT is not set
# CONFIG_FB_VGA16 is not set
# CONFIG_FB_VESA is not set
# CONFIG_FB_HECUBA is not set
# CONFIG_FB_HGA is not set
# CONFIG_FB_S1D13XXX is not set
# CONFIG_FB_NVIDIA is not set
# CONFIG_FB_RIVA is not set
# CONFIG_FB_LE80578 is not set
# CONFIG_FB_INTEL is not set
# CONFIG_FB_MATROX is not set
CONFIG_FB_RADEON=y
CONFIG_FB_RADEON_I2C=y
CONFIG_FB_RADEON_BACKLIGHT=y
# CONFIG_FB_RADEON_DEBUG is not set
CONFIG_FB_ATY128=y
CONFIG_FB_ATY128_BACKLIGHT=y
CONFIG_FB_ATY=y
CONFIG_FB_ATY_CT=y
CONFIG_FB_ATY_GENERIC_LCD=y
CONFIG_FB_ATY_GX=y
CONFIG_FB_ATY_BACKLIGHT=y
# CONFIG_FB_S3 is not set
# CONFIG_FB_SAVAGE is not set
# CONFIG_FB_SIS is not set
# CONFIG_FB_NEOMAGIC is not set
# CONFIG_FB_KYRO is not set
# CONFIG_FB_3DFX is not set
# CONFIG_FB_VOODOO1 is not set
# CONFIG_FB_VT8623 is not set
# CONFIG_FB_TRIDENT is not set
# CONFIG_FB_ARK is not set
# CONFIG_FB_PM3 is not set
# CONFIG_FB_GEODE is not set
# CONFIG_FB_VIRTUAL is not set
CONFIG_BACKLIGHT_LCD_SUPPORT=y
CONFIG_LCD_CLASS_DEVICE=y
CONFIG_BACKLIGHT_CLASS_DEVICE=y
# CONFIG_BACKLIGHT_CORGI is not set
# CONFIG_BACKLIGHT_PROGEAR is not set
#
# Display device support
#
CONFIG_DISPLAY_SUPPORT=y
#
# Display hardware drivers
#
#
# 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
CONFIG_FRAMEBUFFER_CONSOLE=y
# CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY is not set
# CONFIG_FRAMEBUFFER_CONSOLE_ROTATION is not set
# CONFIG_FONTS is not set
CONFIG_FONT_8x8=y
CONFIG_FONT_8x16=y
CONFIG_LOGO=y
CONFIG_LOGO_LINUX_MONO=y
CONFIG_LOGO_LINUX_VGA16=y
CONFIG_LOGO_LINUX_CLUT224=y
#
# Sound
#
CONFIG_SOUND=y
#
# Advanced Linux Sound Architecture
#
CONFIG_SND=y
CONFIG_SND_TIMER=y
CONFIG_SND_PCM=y
CONFIG_SND_RAWMIDI=y
CONFIG_SND_SEQUENCER=y
# CONFIG_SND_SEQ_DUMMY is not set
CONFIG_SND_OSSEMUL=y
CONFIG_SND_MIXER_OSS=y
CONFIG_SND_PCM_OSS=y
CONFIG_SND_PCM_OSS_PLUGINS=y
CONFIG_SND_SEQUENCER_OSS=y
# CONFIG_SND_DYNAMIC_MINORS is not set
# CONFIG_SND_SUPPORT_OLD_API is not set
CONFIG_SND_VERBOSE_PROCFS=y
# CONFIG_SND_VERBOSE_PRINTK is not set
# CONFIG_SND_DEBUG is not set
#
# Generic devices
#
CONFIG_SND_MPU401_UART=y
CONFIG_SND_AC97_CODEC=y
# CONFIG_SND_DUMMY is not set
# CONFIG_SND_VIRMIDI is not set
# CONFIG_SND_MTPAV is not set
# CONFIG_SND_SERIAL_U16550 is not set
# CONFIG_SND_MPU401 is not set
#
# PCI devices
#
CONFIG_SND_AD1889=y
# CONFIG_SND_ALS300 is not set
# CONFIG_SND_ALS4000 is not set
# CONFIG_SND_ALI5451 is not set
# CONFIG_SND_ATIIXP is not set
# CONFIG_SND_ATIIXP_MODEM is not set
# CONFIG_SND_AU8810 is not set
# CONFIG_SND_AU8820 is not set
# CONFIG_SND_AU8830 is not set
# CONFIG_SND_AZT3328 is not set
# CONFIG_SND_BT87X is not set
# CONFIG_SND_CA0106 is not set
# CONFIG_SND_CMIPCI is not set
# CONFIG_SND_CS4281 is not set
# CONFIG_SND_CS46XX is not set
# CONFIG_SND_CS5530 is not set
# CONFIG_SND_DARLA20 is not set
# CONFIG_SND_GINA20 is not set
# CONFIG_SND_LAYLA20 is not set
# CONFIG_SND_DARLA24 is not set
# CONFIG_SND_GINA24 is not set
# CONFIG_SND_LAYLA24 is not set
# CONFIG_SND_MONA is not set
# CONFIG_SND_MIA is not set
# CONFIG_SND_ECHO3G is not set
# CONFIG_SND_INDIGO is not set
# CONFIG_SND_INDIGOIO is not set
# CONFIG_SND_INDIGODJ is not set
# CONFIG_SND_EMU10K1 is not set
# CONFIG_SND_EMU10K1X is not set
# CONFIG_SND_ENS1370 is not set
# CONFIG_SND_ENS1371 is not set
# CONFIG_SND_ES1938 is not set
# CONFIG_SND_ES1968 is not set
# CONFIG_SND_FM801 is not set
CONFIG_SND_HDA_INTEL=y
# CONFIG_SND_HDA_HWDEP is not set
CONFIG_SND_HDA_CODEC_REALTEK=y
CONFIG_SND_HDA_CODEC_ANALOG=y
CONFIG_SND_HDA_CODEC_SIGMATEL=y
CONFIG_SND_HDA_CODEC_VIA=y
CONFIG_SND_HDA_CODEC_ATIHDMI=y
CONFIG_SND_HDA_CODEC_CONEXANT=y
CONFIG_SND_HDA_CODEC_CMEDIA=y
CONFIG_SND_HDA_CODEC_SI3054=y
CONFIG_SND_HDA_GENERIC=y
# CONFIG_SND_HDA_POWER_SAVE is not set
# CONFIG_SND_HDSP is not set
# CONFIG_SND_HDSPM is not set
# CONFIG_SND_ICE1712 is not set
# CONFIG_SND_ICE1724 is not set
# CONFIG_SND_INTEL8X0 is not set
# CONFIG_SND_INTEL8X0M is not set
# CONFIG_SND_KORG1212 is not set
# CONFIG_SND_MAESTRO3 is not set
# CONFIG_SND_MIXART is not set
# CONFIG_SND_NM256 is not set
# CONFIG_SND_PCXHR is not set
# CONFIG_SND_RIPTIDE is not set
# CONFIG_SND_RME32 is not set
# CONFIG_SND_RME96 is not set
# CONFIG_SND_RME9652 is not set
# CONFIG_SND_SONICVIBES is not set
# CONFIG_SND_TRIDENT is not set
CONFIG_SND_VIA82XX=y
# CONFIG_SND_VIA82XX_MODEM is not set
# CONFIG_SND_VX222 is not set
# CONFIG_SND_YMFPCI is not set
# CONFIG_SND_AC97_POWER_SAVE is not set
#
# USB devices
#
# CONFIG_SND_USB_AUDIO is not set
# CONFIG_SND_USB_USX2Y is not set
# CONFIG_SND_USB_CAIAQ is not set
#
# System on Chip audio support
#
# CONFIG_SND_SOC is not set
#
# SoC Audio support for SuperH
#
#
# Open Sound System
#
# CONFIG_SOUND_PRIME is not set
CONFIG_AC97_BUS=y
CONFIG_HID_SUPPORT=y
CONFIG_HID=y
# CONFIG_HID_DEBUG is not set
# CONFIG_HIDRAW is not set
#
# USB Input Devices
#
CONFIG_USB_HID=y
# CONFIG_USB_HIDINPUT_POWERBOOK is not set
# CONFIG_HID_FF is not set
CONFIG_USB_HIDDEV=y
CONFIG_USB_SUPPORT=y
CONFIG_USB_ARCH_HAS_HCD=y
CONFIG_USB_ARCH_HAS_OHCI=y
CONFIG_USB_ARCH_HAS_EHCI=y
CONFIG_USB=y
# CONFIG_USB_DEBUG is not set
#
# Miscellaneous USB options
#
CONFIG_USB_DEVICEFS=y
# CONFIG_USB_DEVICE_CLASS is not set
# CONFIG_USB_DYNAMIC_MINORS is not set
# CONFIG_USB_SUSPEND is not set
# CONFIG_USB_PERSIST is not set
# CONFIG_USB_OTG is not set
#
# USB Host Controller Drivers
#
CONFIG_USB_EHCI_HCD=y
# CONFIG_USB_EHCI_SPLIT_ISO is not set
# CONFIG_USB_EHCI_ROOT_HUB_TT is not set
# CONFIG_USB_EHCI_TT_NEWSCHED is not set
# CONFIG_USB_ISP116X_HCD is not set
CONFIG_USB_OHCI_HCD=y
# CONFIG_USB_OHCI_BIG_ENDIAN_DESC is not set
# CONFIG_USB_OHCI_BIG_ENDIAN_MMIO is not set
CONFIG_USB_OHCI_LITTLE_ENDIAN=y
CONFIG_USB_UHCI_HCD=y
# CONFIG_USB_SL811_HCD is not set
# CONFIG_USB_R8A66597_HCD is not set
#
# USB Device Class drivers
#
# CONFIG_USB_ACM is not set
# CONFIG_USB_PRINTER is not set
#
# NOTE: USB_STORAGE enables SCSI, and 'SCSI disk support'
#
#
# may also be needed; see USB_STORAGE Help for more information
#
CONFIG_USB_STORAGE=y
# CONFIG_USB_STORAGE_DEBUG is not set
# CONFIG_USB_STORAGE_DATAFAB is not set
# CONFIG_USB_STORAGE_FREECOM is not set
# CONFIG_USB_STORAGE_ISD200 is not set
# CONFIG_USB_STORAGE_DPCM is not set
# CONFIG_USB_STORAGE_USBAT is not set
# CONFIG_USB_STORAGE_SDDR09 is not set
# CONFIG_USB_STORAGE_SDDR55 is not set
# CONFIG_USB_STORAGE_JUMPSHOT is not set
# CONFIG_USB_STORAGE_ALAUDA is not set
# CONFIG_USB_STORAGE_KARMA is not set
# CONFIG_USB_LIBUSUAL is not set
#
# USB Imaging devices
#
# CONFIG_USB_MDC800 is not set
# CONFIG_USB_MICROTEK is not set
# CONFIG_USB_MON is not set
#
# USB port drivers
#
#
# USB Serial Converter support
#
# CONFIG_USB_SERIAL is not set
#
# USB Miscellaneous drivers
#
# CONFIG_USB_EMI62 is not set
# CONFIG_USB_EMI26 is not set
# CONFIG_USB_ADUTUX is not set
# CONFIG_USB_AUERSWALD is not set
# CONFIG_USB_RIO500 is not set
# CONFIG_USB_LEGOTOWER is not set
# CONFIG_USB_LCD is not set
# CONFIG_USB_BERRY_CHARGE is not set
# CONFIG_USB_LED is not set
# CONFIG_USB_CYPRESS_CY7C63 is not set
# CONFIG_USB_CYTHERM is not set
# CONFIG_USB_PHIDGET is not set
# CONFIG_USB_IDMOUSE is not set
# CONFIG_USB_FTDI_ELAN is not set
# CONFIG_USB_APPLEDISPLAY is not set
# CONFIG_USB_SISUSBVGA is not set
# CONFIG_USB_LD is not set
# CONFIG_USB_TRANCEVIBRATOR is not set
# CONFIG_USB_IOWARRIOR is not set
# CONFIG_USB_TEST is not set
#
# USB DSL modem support
#
#
# USB Gadget Support
#
# CONFIG_USB_GADGET is not set
# CONFIG_MMC is not set
# CONFIG_NEW_LEDS is not set
# CONFIG_INFINIBAND is not set
CONFIG_EDAC=y
#
# Reporting subsystems
#
# CONFIG_EDAC_DEBUG is not set
CONFIG_EDAC_MM_EDAC=y
# CONFIG_EDAC_E752X is not set
# CONFIG_EDAC_I82975X is not set
# CONFIG_EDAC_I5000 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_SYSFS=y
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
#
# I2C RTC drivers
#
# CONFIG_RTC_DRV_DS1307 is not set
# CONFIG_RTC_DRV_DS1374 is not set
# CONFIG_RTC_DRV_DS1672 is not set
# CONFIG_RTC_DRV_MAX6900 is not set
# CONFIG_RTC_DRV_RS5C372 is not set
# CONFIG_RTC_DRV_ISL1208 is not set
# CONFIG_RTC_DRV_X1205 is not set
# CONFIG_RTC_DRV_PCF8563 is not set
# CONFIG_RTC_DRV_PCF8583 is not set
# CONFIG_RTC_DRV_M41T80 is not set
#
# SPI RTC drivers
#
#
# Platform RTC drivers
#
CONFIG_RTC_DRV_CMOS=y
# CONFIG_RTC_DRV_DS1553 is not set
# CONFIG_RTC_DRV_STK17TA8 is not set
# CONFIG_RTC_DRV_DS1742 is not set
# CONFIG_RTC_DRV_M48T86 is not set
# CONFIG_RTC_DRV_M48T59 is not set
# CONFIG_RTC_DRV_V3020 is not set
#
# on-CPU RTC drivers
#
# CONFIG_DMADEVICES is not set
CONFIG_VIRTUALIZATION=y
# CONFIG_KVM is not set
#
# Userspace I/O
#
# CONFIG_UIO is not set
#
# Firmware Drivers
#
# CONFIG_EDD is not set
# CONFIG_DELL_RBU is not set
# CONFIG_DCDBAS is not set
CONFIG_DMIID=y
#
# File systems
#
CONFIG_EXT2_FS=y
CONFIG_EXT2_FS_XATTR=y
CONFIG_EXT2_FS_POSIX_ACL=y
CONFIG_EXT2_FS_SECURITY=y
# CONFIG_EXT2_FS_XIP 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=y
CONFIG_EXT4DEV_FS_XATTR=y
# CONFIG_EXT4DEV_FS_POSIX_ACL is not set
# CONFIG_EXT4DEV_FS_SECURITY is not set
CONFIG_JBD=y
# CONFIG_JBD_DEBUG is not set
CONFIG_JBD2=y
# CONFIG_JBD2_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_MINIX_FS is not set
# CONFIG_ROMFS_FS is not set
CONFIG_INOTIFY=y
CONFIG_INOTIFY_USER=y
# CONFIG_QUOTA is not set
CONFIG_DNOTIFY=y
# 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=y
CONFIG_JOLIET=y
CONFIG_ZISOFS=y
CONFIG_UDF_FS=y
CONFIG_UDF_NLS=y
#
# DOS/FAT/NT Filesystems
#
CONFIG_FAT_FS=m
CONFIG_MSDOS_FS=m
CONFIG_VFAT_FS=m
CONFIG_FAT_DEFAULT_CODEPAGE=437
CONFIG_FAT_DEFAULT_IOCHARSET="iso8859-1"
# 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 is not set
# CONFIG_HUGETLBFS is not set
# CONFIG_HUGETLB_PAGE is not set
# CONFIG_CONFIGFS_FS 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_HPFS_FS is not set
# CONFIG_QNX4FS_FS is not set
# CONFIG_SYSV_FS is not set
# CONFIG_UFS_FS is not set
CONFIG_NETWORK_FILESYSTEMS=y
CONFIG_NFS_FS=y
CONFIG_NFS_V3=y
# CONFIG_NFS_V3_ACL is not set
CONFIG_NFS_V4=y
CONFIG_NFS_DIRECTIO=y
CONFIG_NFSD=y
CONFIG_NFSD_V3=y
# CONFIG_NFSD_V3_ACL is not set
CONFIG_NFSD_V4=y
CONFIG_NFSD_TCP=y
CONFIG_LOCKD=y
CONFIG_LOCKD_V4=y
CONFIG_EXPORTFS=y
CONFIG_NFS_COMMON=y
CONFIG_SUNRPC=y
CONFIG_SUNRPC_GSS=y
# CONFIG_SUNRPC_BIND34 is not set
CONFIG_RPCSEC_GSS_KRB5=y
# CONFIG_RPCSEC_GSS_SPKM3 is not set
# CONFIG_SMB_FS is not set
# CONFIG_CIFS is not set
# CONFIG_NCP_FS is not set
# CONFIG_CODA_FS is not set
# CONFIG_AFS_FS 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 is not set
# CONFIG_SYSV68_PARTITION is not set
CONFIG_NLS=y
CONFIG_NLS_DEFAULT="cp437"
CONFIG_NLS_CODEPAGE_437=y
# CONFIG_NLS_CODEPAGE_737 is not set
# CONFIG_NLS_CODEPAGE_775 is not set
CONFIG_NLS_CODEPAGE_850=y
# 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=y
# 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=y
# CONFIG_NLS_KOI8_R is not set
# CONFIG_NLS_KOI8_U is not set
CONFIG_NLS_UTF8=y
# CONFIG_DLM is not set
CONFIG_INSTRUMENTATION=y
# CONFIG_PROFILING is not set
# CONFIG_KPROBES is not set
# CONFIG_MARKERS 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=y
CONFIG_DEBUG_FS=y
# CONFIG_HEADERS_CHECK is not set
CONFIG_DEBUG_KERNEL=y
# CONFIG_DEBUG_SHIRQ is not set
CONFIG_DETECT_SOFTLOCKUP=y
CONFIG_SCHED_DEBUG=y
CONFIG_SCHEDSTATS=y
# CONFIG_TIMER_STATS is not set
# CONFIG_SLUB_DEBUG_ON is not set
CONFIG_DEBUG_PREEMPT=y
# CONFIG_DEBUG_RT_MUTEXES is not set
# CONFIG_RT_MUTEX_TESTER is not set
CONFIG_DEBUG_SPINLOCK=y
CONFIG_DEBUG_MUTEXES=y
# CONFIG_DEBUG_LOCK_ALLOC is not set
# CONFIG_PROVE_LOCKING is not set
# CONFIG_LOCK_STAT is not set
CONFIG_DEBUG_SPINLOCK_SLEEP=y
# CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
# CONFIG_DEBUG_KOBJECT is not set
CONFIG_DEBUG_BUGVERBOSE=y
# CONFIG_DEBUG_INFO is not set
# CONFIG_DEBUG_VM is not set
# CONFIG_DEBUG_LIST is not set
# CONFIG_DEBUG_SG is not set
CONFIG_FRAME_POINTER=y
CONFIG_FORCED_INLINING=y
# CONFIG_BOOT_PRINTK_DELAY is not set
# CONFIG_RCU_TORTURE_TEST is not set
# CONFIG_FAULT_INJECTION is not set
# CONFIG_SAMPLES is not set
CONFIG_EARLY_PRINTK=y
# CONFIG_DEBUG_STACKOVERFLOW is not set
# CONFIG_DEBUG_STACK_USAGE is not set
CONFIG_DEBUG_RODATA=y
# CONFIG_IOMMU_DEBUG is not set
#
# Security options
#
# CONFIG_KEYS is not set
# CONFIG_SECURITY is not set
# CONFIG_SECURITY_FILE_CAPABILITIES is not set
CONFIG_CRYPTO=y
CONFIG_CRYPTO_ALGAPI=y
CONFIG_CRYPTO_BLKCIPHER=y
CONFIG_CRYPTO_HASH=y
CONFIG_CRYPTO_MANAGER=y
CONFIG_CRYPTO_HMAC=y
# CONFIG_CRYPTO_XCBC is not set
CONFIG_CRYPTO_NULL=m
CONFIG_CRYPTO_MD4=m
CONFIG_CRYPTO_MD5=y
CONFIG_CRYPTO_SHA1=y
CONFIG_CRYPTO_SHA256=m
CONFIG_CRYPTO_SHA512=m
CONFIG_CRYPTO_WP512=m
CONFIG_CRYPTO_TGR192=m
# CONFIG_CRYPTO_GF128MUL is not set
CONFIG_CRYPTO_ECB=y
CONFIG_CRYPTO_CBC=y
CONFIG_CRYPTO_PCBC=m
# CONFIG_CRYPTO_LRW is not set
# CONFIG_CRYPTO_XTS is not set
# CONFIG_CRYPTO_CRYPTD is not set
CONFIG_CRYPTO_DES=y
# CONFIG_CRYPTO_FCRYPT is not set
CONFIG_CRYPTO_BLOWFISH=m
CONFIG_CRYPTO_TWOFISH=m
CONFIG_CRYPTO_TWOFISH_COMMON=m
CONFIG_CRYPTO_TWOFISH_X86_64=m
CONFIG_CRYPTO_SERPENT=m
CONFIG_CRYPTO_AES=y
CONFIG_CRYPTO_AES_X86_64=m
CONFIG_CRYPTO_CAST5=m
CONFIG_CRYPTO_CAST6=m
CONFIG_CRYPTO_TEA=m
CONFIG_CRYPTO_ARC4=y
CONFIG_CRYPTO_KHAZAD=m
CONFIG_CRYPTO_ANUBIS=m
# CONFIG_CRYPTO_SEED is not set
CONFIG_CRYPTO_DEFLATE=y
CONFIG_CRYPTO_MICHAEL_MIC=m
CONFIG_CRYPTO_CRC32C=m
# CONFIG_CRYPTO_CAMELLIA is not set
CONFIG_CRYPTO_TEST=m
# CONFIG_CRYPTO_AUTHENC is not set
CONFIG_CRYPTO_HW=y
#
# Library routines
#
CONFIG_BITREVERSE=y
CONFIG_CRC_CCITT=y
CONFIG_CRC16=y
# CONFIG_CRC_ITU_T is not set
CONFIG_CRC32=y
# CONFIG_CRC7 is not set
CONFIG_LIBCRC32C=m
CONFIG_ZLIB_INFLATE=y
CONFIG_ZLIB_DEFLATE=y
CONFIG_PLIST=y
CONFIG_HAS_IOMEM=y
CONFIG_HAS_IOPORT=y
CONFIG_HAS_DMA=y
Cheers,
Grant
On Monday, 5 of November 2007, Grant Wilson wrote:
> Hi,
> I got this oops on 2.6.24-rc1-641-gb4f5550:
(1) Is this reproducible?
(2) Did it happen previously on your system?
> [18073.371126] Unable to handle kernel NULL pointer dereference at 0000000000000120 RIP:
> [18073.371134] [<ffffffff8023572e>] check_preempt_wakeup+0x6e/0x110
> [18073.371144] PGD 81f9067 PUD 81c8067 PMD 0
> [18073.371151] Oops: 0000 [1] PREEMPT SMP
> [18073.371157] CPU 2
> [18073.371161] Modules linked in: vfat fat
> [18073.371168] Pid: 4639, comm: kwin Not tainted 2.6.24-rc1 #1
> [18073.371171] RIP: 0010:[<ffffffff8023572e>] [<ffffffff8023572e>] check_preempt_wakeup+0x6e/0x110
> [18073.371177] RSP: 0018:ffff810008531a78 EFLAGS: 00010006
> [18073.371179] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
> [18073.371183] RDX: ffff810004441bf0 RSI: ffff81000801e860 RDI: ffff81000444ab80
> [18073.371186] RBP: ffff810008531aa8 R08: 000000d0d47a4a90 R09: 0000000000000000
> [18073.371188] R10: ffff810004441bf0 R11: 0000000000000001 R12: ffff810006520400
> [18073.371190] R13: ffff81000801e860 R14: ffff81000a63a000 R15: ffff81000443d8e0
> [18073.371193] FS: 00002b7d646a86f0(0000) GS:ffff810004c11780(0000) knlGS:0000000000000000
> [18073.371196] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> [18073.371199] CR2: 0000000000000120 CR3: 0000000008495000 CR4: 00000000000006e0
> [18073.371202] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [18073.371211] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> [18073.371214] Process kwin (pid: 4639, threadinfo ffff810008530000, task ffff81000840a860)
> [18073.371216] Stack: ffff81000444ab80 0000000000000001 ffff81000801e860 ffff81000444ab80
> [18073.371231] 0000000000000002 ffff81000443d8e0 ffff810008531b38 ffffffff8023061e
> [18073.371238] 0000000000000000 ffff810004441b80 0000000000000002 0000000100000000
> [18073.371245] Call Trace:
> [18073.371250] [<ffffffff8023061e>] try_to_wake_up+0x2fe/0x3a0
> [18073.371253] [<ffffffff802306cd>] default_wake_function+0xd/0x10
> [18073.371257] [<ffffffff8022daca>] __wake_up_common+0x5a/0x90
> [18073.371260] [<ffffffff8023095a>] __wake_up_sync+0x4a/0x70
> [18073.371264] [<ffffffff80602c3f>] unix_write_space+0x8f/0xa0
> [18073.371269] [<ffffffff80593359>] sock_wfree+0x49/0x50
> [18073.371272] [<ffffffff805951d9>] __kfree_skb+0x69/0xe0
> [18073.371275] [<ffffffff80595267>] kfree_skb+0x17/0x30
> [18073.371278] [<ffffffff80601347>] unix_stream_recvmsg+0x267/0x610
> [18073.371283] [<ffffffff8058e0b7>] sock_aio_read+0x107/0x110
> [18073.371287] [<ffffffff802929a1>] do_sync_read+0xf1/0x130
> [18073.371291] [<ffffffff8058e230>] sock_ioctl+0x0/0x260
> [18073.371295] [<ffffffff80251830>] autoremove_wake_function+0x0/0x40
> [18073.371299] [<ffffffff80600522>] unix_ioctl+0xb2/0xf0
> [18073.371302] [<ffffffff8058e301>] sock_ioctl+0xd1/0x260
> [18073.371305] [<ffffffff802a00c1>] do_ioctl+0x31/0x90
> [18073.371308] [<ffffffff802932f6>] vfs_read+0x156/0x160
> [18073.371311] [<ffffffff80293700>] sys_read+0x50/0x90
> [18073.371315] [<ffffffff8020bd7e>] system_call+0x7e/0x83
> [18073.371317]
> [18073.371319]
> [18073.371319] Code: 48 8b 90 20 01 00 00 48 39 93 20 01 00 00 75 e2 48 81 3b 00
> [18073.371346] RIP [<ffffffff8023572e>] check_preempt_wakeup+0x6e/0x110
> [18073.371351] RSP <ffff810008531a78>
> [18073.371354] CR2: 0000000000000120
> [18073.371358] note: kwin[4639] exited with preempt_count 3
On Thursday, 8 of November 2007, Grant Wilson wrote:
> On Thu, 8 Nov 2007 01:06:21 +0100
> "Rafael J. Wysocki" <[email protected]> wrote:
>
> > On Monday, 5 of November 2007, Grant Wilson wrote:
> > > Hi,
> > > I got this oops on 2.6.24-rc1-641-gb4f5550:
> >
> > (1) Is this reproducible?
> > (2) Did it happen previously on your system?
> >
> > [18073.371126] Unable to handle kernel NULL pointer dereference at 0000000000000120 RIP:
> > [18073.371134] [<ffffffff8023572e>] check_preempt_wakeup+0x6e/0x110
>
> This has now happened twice - the second time was last night when
> running 2.6.24-rc2.
>
> Here's that second occurrence:
>
> [ 7224.233621] Unable to handle kernel NULL pointer dereference at 0000000000000120 RIP:
> [ 7224.233631] [<ffffffff8023572e>] check_preempt_wakeup+0x6e/0x110
> [ 7224.233644] PGD 0
> [ 7224.233650] Oops: 0000 [1] PREEMPT SMP
> [ 7224.233660] CPU 0
> [ 7224.233716] Modules linked in:
> [ 7224.233722] Pid: 7622, comm: ssh Not tainted 2.6.24-rc2 #1
> [ 7224.233726] RIP: 0010:[<ffffffff8023572e>] [<ffffffff8023572e>] check_preempt_wakeup+0x6e/0x110
> [ 7224.233735] RSP: 0018:ffff81000aafba78 EFLAGS: 00010006
> [ 7224.233738] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000005745
> [ 7224.233743] RDX: ffff81000442fbf0 RSI: ffff810006c96860 RDI: ffff810004438b80
> [ 7224.233748] RBP: ffff81000aafbaa8 R08: 0000007e8e25cf71 R09: 0000000000000000
> [ 7224.233752] R10: ffff81000442fbf0 R11: 0000000000000001 R12: ffff810007479d80
> [ 7224.233756] R13: ffff810006c96860 R14: ffff810009924860 R15: ffff81000442b8e0
> [ 7224.233760] FS: 00002b8bf089d350(0000) GS:ffffffff808d7000(0000) knlGS:0000000000000000
> [ 7224.233764] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> [ 7224.233768] CR2: 0000000000000120 CR3: 000000000ab3f000 CR4: 00000000000006e0
> [ 7224.233771] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [ 7224.233775] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> [ 7224.233779] Process ssh (pid: 7622, threadinfo ffff81000aafa000, task ffff81000abc2000)
> [ 7224.233782] Stack: ffff810004438b80 0000000000000001 ffff810006c96860 ffff810004438b80
> [ 7224.233796] 0000000000000000 ffff81000442b8e0 ffff81000aafbb38 ffffffff8023061e
> [ 7224.233807] 0000000000000400 ffff81000442fb80 0000000000000000 0000000100000000
> [ 7224.233816] Call Trace:
> [ 7224.233823] [<ffffffff8023061e>] try_to_wake_up+0x2fe/0x3a0
> [ 7224.233828] [<ffffffff802306cd>] default_wake_function+0xd/0x10
> [ 7224.233833] [<ffffffff8022daca>] __wake_up_common+0x5a/0x90
> [ 7224.233839] [<ffffffff8023095a>] __wake_up_sync+0x4a/0x70
> [ 7224.233845] [<ffffffff80602fbf>] unix_write_space+0x8f/0xa0
> [ 7224.233850] [<ffffffff805936f9>] sock_wfree+0x49/0x50
> [ 7224.233854] [<ffffffff80595579>] __kfree_skb+0x69/0xe0
> [ 7224.233859] [<ffffffff80595607>] kfree_skb+0x17/0x30
> [ 7224.233863] [<ffffffff806016c7>] unix_stream_recvmsg+0x267/0x610
> [ 7224.233869] [<ffffffff8058e457>] sock_aio_read+0x107/0x110
> [ 7224.233875] [<ffffffff802928f1>] do_sync_read+0xf1/0x130
> [ 7224.233882] [<ffffffff802a4f20>] __d_free+0x30/0x40
> [ 7224.233887] [<ffffffff80251830>] autoremove_wake_function+0x0/0x40
> [ 7224.233892] [<ffffffff80293246>] vfs_read+0x156/0x160
> [ 7224.233897] [<ffffffff80293650>] sys_read+0x50/0x90
> [ 7224.233901] [<ffffffff8020bd7e>] system_call+0x7e/0x83
> [ 7224.233904]
> [ 7224.233907]
> [ 7224.233907] Code: 48 8b 90 20 01 00 00 48 39 93 20 01 00 00 75 e2 48 81 3b 00
> [ 7224.233951] RIP [<ffffffff8023572e>] check_preempt_wakeup+0x6e/0x110
> [ 7224.233957] RSP <ffff81000aafba78>
> [ 7224.233961] CR2: 0000000000000120
> [ 7224.233967] note: ssh[7622] exited with preempt_count 3
Hmm.
Please run "gdb vmlinux" and see what code corresponds to
check_preempt_wakeup+0x6e in your kernel.
On Thu, 8 Nov 2007 16:53:10 +0100
"Rafael J. Wysocki" <[email protected]> wrote:
> On Thursday, 8 of November 2007, Grant Wilson wrote:
> > On Thu, 8 Nov 2007 01:06:21 +0100
> > "Rafael J. Wysocki" <[email protected]> wrote:
> >
> > > On Monday, 5 of November 2007, Grant Wilson wrote:
> > > > Hi,
> > > > I got this oops on 2.6.24-rc1-641-gb4f5550:
> > >
> > > (1) Is this reproducible?
> > > (2) Did it happen previously on your system?
> > >
> > > [18073.371126] Unable to handle kernel NULL pointer dereference at 0000000000000120 RIP:
> > > [18073.371134] [<ffffffff8023572e>] check_preempt_wakeup+0x6e/0x110
> >
> > This has now happened twice - the second time was last night when
> > running 2.6.24-rc2.
> >
> > Here's that second occurrence:
> >
[snip]
>
> Hmm.
>
> Please run "gdb vmlinux" and see what code corresponds to
> check_preempt_wakeup+0x6e in your kernel.
Dump of assembler code for function check_preempt_wakeup:
0xffffffff80232940 <check_preempt_wakeup+0>: push %rbp
0xffffffff80232941 <check_preempt_wakeup+1>: mov %rsp,%rbp
0xffffffff80232944 <check_preempt_wakeup+4>: sub $0x30,%rsp
0xffffffff80232948 <check_preempt_wakeup+8>: mov %r13,-0x18(%rbp)
0xffffffff8023294c <check_preempt_wakeup+12>: mov %rbx,-0x28(%rbp)
0xffffffff80232950 <check_preempt_wakeup+16>: mov %rsi,%r13
0xffffffff80232953 <check_preempt_wakeup+19>: mov %r12,-0x20(%rbp)
0xffffffff80232957 <check_preempt_wakeup+23>: mov %r14,-0x10(%rbp)
0xffffffff8023295b <check_preempt_wakeup+27>: mov %r15,-0x8(%rbp)
0xffffffff8023295f <check_preempt_wakeup+31>: cmpl $0x63,0x20(%rsi)
0xffffffff80232963 <check_preempt_wakeup+35>: mov 0x750(%rdi),%r14
0xffffffff8023296a <check_preempt_wakeup+42>: mov 0x168(%r14),%r12
0xffffffff80232971 <check_preempt_wakeup+49>: jle 0xffffffff80232a1c <check_preempt_wakeup+220>
0xffffffff80232977 <check_preempt_wakeup+55>: cmpl $0x3,0x17c(%rsi)
0xffffffff8023297e <check_preempt_wakeup+62>: je 0xffffffff802329f8 <check_preempt_wakeup+184>
0xffffffff80232980 <check_preempt_wakeup+64>: testb $0x10,0x593cb9(%rip) # 0xffffffff807c6640 <sysctl_sched_features>
0xffffffff80232987 <check_preempt_wakeup+71>: je 0xffffffff802329f8 <check_preempt_wakeup+184>
0xffffffff80232989 <check_preempt_wakeup+73>: cmp 0x168(%rsi),%r12
0xffffffff80232990 <check_preempt_wakeup+80>: lea 0x48(%r14),%rbx
0xffffffff80232994 <check_preempt_wakeup+84>: lea 0x48(%rsi),%rax
0xffffffff80232998 <check_preempt_wakeup+88>: je 0xffffffff802329be <check_preempt_wakeup+126>
0xffffffff8023299a <check_preempt_wakeup+90>: nopw 0x0(%rax,%rax,1)
0xffffffff802329a0 <check_preempt_wakeup+96>: mov 0x118(%rbx),%rbx
0xffffffff802329a7 <check_preempt_wakeup+103>: mov 0x118(%rax),%rax
0xffffffff802329ae <check_preempt_wakeup+110>: mov 0x120(%rax),%rdx
0xffffffff802329b5 <check_preempt_wakeup+117>: cmp %rdx,0x120(%rbx)
0xffffffff802329bc <check_preempt_wakeup+124>: jne 0xffffffff802329a0 <check_preempt_wakeup+96>
0xffffffff802329be <check_preempt_wakeup+126>: cmpq $0x400,(%rbx)
0xffffffff802329c5 <check_preempt_wakeup+133>: mov 0x40(%rbx),%r12
0xffffffff802329c9 <check_preempt_wakeup+137>: mov 0x40(%rax),%r15
0xffffffff802329cd <check_preempt_wakeup+141>: mov 0x593c81(%rip),%edi # 0xffffffff807c6654 <sysctl_sched_wakeup_granularity>
0xffffffff802329d3 <check_preempt_wakeup+147>: jne 0xffffffff80232a37 <check_preempt_wakeup+247>
0xffffffff802329d5 <check_preempt_wakeup+149>: sub %r15,%r12
0xffffffff802329d8 <check_preempt_wakeup+152>: cmp %r12,%rdi
0xffffffff802329db <check_preempt_wakeup+155>: jge 0xffffffff802329f8 <check_preempt_wakeup+184>
0xffffffff802329dd <check_preempt_wakeup+157>: testb $0x20,0x593c5c(%rip) # 0xffffffff807c6640 <sysctl_sched_features>
Cheers,
Grant
--
Running Linux 2.6.24-rc2 on x86_64
On Thursday, 8 of November 2007, Grant Wilson wrote:
> On Thu, 8 Nov 2007 16:53:10 +0100
> "Rafael J. Wysocki" <[email protected]> wrote:
>
> > On Thursday, 8 of November 2007, Grant Wilson wrote:
> > > On Thu, 8 Nov 2007 01:06:21 +0100
> > > "Rafael J. Wysocki" <[email protected]> wrote:
> > >
> > > > On Monday, 5 of November 2007, Grant Wilson wrote:
> > > > > Hi,
> > > > > I got this oops on 2.6.24-rc1-641-gb4f5550:
> > > >
> > > > (1) Is this reproducible?
> > > > (2) Did it happen previously on your system?
> > > >
> > > > [18073.371126] Unable to handle kernel NULL pointer dereference at 0000000000000120 RIP:
> > > > [18073.371134] [<ffffffff8023572e>] check_preempt_wakeup+0x6e/0x110
> > >
> > > This has now happened twice - the second time was last night when
> > > running 2.6.24-rc2.
> > >
> > > Here's that second occurrence:
> > >
> [snip]
> >
> > Hmm.
> >
> > Please run "gdb vmlinux" and see what code corresponds to
> > check_preempt_wakeup+0x6e in your kernel.
>
>
> Dump of assembler code for function check_preempt_wakeup:
Well, thanks, but I meant the source code. Please do "gdb vmlinux" and then
"l *check_preempt_wakeup+0x6e" in gdb.
Thanks,
Rafael
On Thu, 8 Nov 2007 22:42:21 +0100
"Rafael J. Wysocki" <[email protected]> wrote:
> On Thursday, 8 of November 2007, Grant Wilson wrote:
> > On Thu, 8 Nov 2007 16:53:10 +0100
> > "Rafael J. Wysocki" <[email protected]> wrote:
> >
> > > On Thursday, 8 of November 2007, Grant Wilson wrote:
> > > > On Thu, 8 Nov 2007 01:06:21 +0100
> > > > "Rafael J. Wysocki" <[email protected]> wrote:
> > > >
> > > > > On Monday, 5 of November 2007, Grant Wilson wrote:
> > > > > > Hi,
> > > > > > I got this oops on 2.6.24-rc1-641-gb4f5550:
> > > > >
> > > > > (1) Is this reproducible?
> > > > > (2) Did it happen previously on your system?
> > > > >
> > > > > [18073.371126] Unable to handle kernel NULL pointer dereference at 0000000000000120 RIP:
> > > > > [18073.371134] [<ffffffff8023572e>] check_preempt_wakeup+0x6e/0x110
> > > >
> > > > This has now happened twice - the second time was last night when
> > > > running 2.6.24-rc2.
> > > >
> > > > Here's that second occurrence:
> > > >
> > [snip]
> > >
> > > Hmm.
> > >
> > > Please run "gdb vmlinux" and see what code corresponds to
> > > check_preempt_wakeup+0x6e in your kernel.
> >
> >
> > Dump of assembler code for function check_preempt_wakeup:
>
> Well, thanks, but I meant the source code. Please do "gdb vmlinux" and then
> "l *check_preempt_wakeup+0x6e" in gdb.
Here's the requested output:
(gdb) l *check_preempt_wakeup+0x6e
0xffffffff802329ae is in check_preempt_wakeup (kernel/sched_fair.c:668).
663
664 /* Do the two (enqueued) entities belong to the same group ? */
665 static inline int
666 is_same_group(struct sched_entity *se, struct sched_entity *pse)
667 {
668 if (se->cfs_rq == pse->cfs_rq)
669 return 1;
670
671 return 0;
672 }
Grant
On Thursday, 8 of November 2007, Grant Wilson wrote:
> On Thu, 8 Nov 2007 22:42:21 +0100
> "Rafael J. Wysocki" <[email protected]> wrote:
>
> > On Thursday, 8 of November 2007, Grant Wilson wrote:
> > > On Thu, 8 Nov 2007 16:53:10 +0100
> > > "Rafael J. Wysocki" <[email protected]> wrote:
> > >
> > > > On Thursday, 8 of November 2007, Grant Wilson wrote:
> > > > > On Thu, 8 Nov 2007 01:06:21 +0100
> > > > > "Rafael J. Wysocki" <[email protected]> wrote:
> > > > >
> > > > > > On Monday, 5 of November 2007, Grant Wilson wrote:
> > > > > > > Hi,
> > > > > > > I got this oops on 2.6.24-rc1-641-gb4f5550:
> > > > > >
> > > > > > (1) Is this reproducible?
> > > > > > (2) Did it happen previously on your system?
> > > > > >
> > > > > > [18073.371126] Unable to handle kernel NULL pointer dereference at 0000000000000120 RIP:
> > > > > > [18073.371134] [<ffffffff8023572e>] check_preempt_wakeup+0x6e/0x110
> > > > >
> > > > > This has now happened twice - the second time was last night when
> > > > > running 2.6.24-rc2.
> > > > >
> > > > > Here's that second occurrence:
> > > > >
> > > [snip]
> > > >
> > > > Hmm.
> > > >
> > > > Please run "gdb vmlinux" and see what code corresponds to
> > > > check_preempt_wakeup+0x6e in your kernel.
> > >
> > >
> > > Dump of assembler code for function check_preempt_wakeup:
> >
> > Well, thanks, but I meant the source code. Please do "gdb vmlinux" and then
> > "l *check_preempt_wakeup+0x6e" in gdb.
>
> Here's the requested output:
>
> (gdb) l *check_preempt_wakeup+0x6e
> 0xffffffff802329ae is in check_preempt_wakeup (kernel/sched_fair.c:668).
> 663
> 664 /* Do the two (enqueued) entities belong to the same group ? */
> 665 static inline int
> 666 is_same_group(struct sched_entity *se, struct sched_entity *pse)
> 667 {
> 668 if (se->cfs_rq == pse->cfs_rq)
> 669 return 1;
> 670
> 671 return 0;
> 672 }
Well, it looks like either se or pse is NULL.
Ingo, can you please have a look?
Thanks,
Rafael
On Thu, 2007-11-08 at 23:49 +0100, Rafael J. Wysocki wrote:
> On Thursday, 8 of November 2007, Grant Wilson wrote:
> > On Thu, 8 Nov 2007 22:42:21 +0100
> > "Rafael J. Wysocki" <[email protected]> wrote:
> >
> > > On Thursday, 8 of November 2007, Grant Wilson wrote:
> > > > On Thu, 8 Nov 2007 16:53:10 +0100
> > > > "Rafael J. Wysocki" <[email protected]> wrote:
> > > >
> > > > > On Thursday, 8 of November 2007, Grant Wilson wrote:
> > > > > > On Thu, 8 Nov 2007 01:06:21 +0100
> > > > > > "Rafael J. Wysocki" <[email protected]> wrote:
> > > > > >
> > > > > > > On Monday, 5 of November 2007, Grant Wilson wrote:
> > > > > > > > Hi,
> > > > > > > > I got this oops on 2.6.24-rc1-641-gb4f5550:
> > > > > > >
> > > > > > > (1) Is this reproducible?
> > > > > > > (2) Did it happen previously on your system?
> > > > > > >
> > > > > > > [18073.371126] Unable to handle kernel NULL pointer dereference at 0000000000000120 RIP:
> > > > > > > [18073.371134] [<ffffffff8023572e>] check_preempt_wakeup+0x6e/0x110
> > > > > >
> > > > > > This has now happened twice - the second time was last night when
> > > > > > running 2.6.24-rc2.
> > > > > >
> > > > > > Here's that second occurrence:
> > > > > >
> > > > [snip]
> > > > >
> > > > > Hmm.
> > > > >
> > > > > Please run "gdb vmlinux" and see what code corresponds to
> > > > > check_preempt_wakeup+0x6e in your kernel.
> > > >
> > > >
> > > > Dump of assembler code for function check_preempt_wakeup:
> > >
> > > Well, thanks, but I meant the source code. Please do "gdb vmlinux" and then
> > > "l *check_preempt_wakeup+0x6e" in gdb.
> >
> > Here's the requested output:
> >
> > (gdb) l *check_preempt_wakeup+0x6e
> > 0xffffffff802329ae is in check_preempt_wakeup (kernel/sched_fair.c:668).
> > 663
> > 664 /* Do the two (enqueued) entities belong to the same group ? */
> > 665 static inline int
> > 666 is_same_group(struct sched_entity *se, struct sched_entity *pse)
> > 667 {
> > 668 if (se->cfs_rq == pse->cfs_rq)
> > 669 return 1;
> > 670
> > 671 return 0;
> > 672 }
>
> Well, it looks like either se or pse is NULL.
>
> Ingo, can you please have a look?
Most puzzling this, it should be guaranteed that the top sched_entities
are of the same group, therefore avoiding this loop into NULL. Obviously
something has gone wrong.
Grant, is there anything specific you can tell us about how to reproduce
this?
On Mon, 12 Nov 2007 19:05:49 +0100
Peter Zijlstra <[email protected]> wrote:
>
> On Thu, 2007-11-08 at 23:49 +0100, Rafael J. Wysocki wrote:
> > On Thursday, 8 of November 2007, Grant Wilson wrote:
> > > On Thu, 8 Nov 2007 22:42:21 +0100
> > > "Rafael J. Wysocki" <[email protected]> wrote:
> > >
> > > > On Thursday, 8 of November 2007, Grant Wilson wrote:
> > > > > On Thu, 8 Nov 2007 16:53:10 +0100
> > > > > "Rafael J. Wysocki" <[email protected]> wrote:
> > > > >
> > > > > > On Thursday, 8 of November 2007, Grant Wilson wrote:
> > > > > > > On Thu, 8 Nov 2007 01:06:21 +0100
> > > > > > > "Rafael J. Wysocki" <[email protected]> wrote:
> > > > > > >
> > > > > > > > On Monday, 5 of November 2007, Grant Wilson wrote:
> > > > > > > > > Hi,
> > > > > > > > > I got this oops on 2.6.24-rc1-641-gb4f5550:
> > > > > > > >
> > > > > > > > (1) Is this reproducible?
> > > > > > > > (2) Did it happen previously on your system?
> > > > > > > >
> > > > > > > > [18073.371126] Unable to handle kernel NULL pointer dereference at 0000000000000120 RIP:
> > > > > > > > [18073.371134] [<ffffffff8023572e>] check_preempt_wakeup+0x6e/0x110
> > > > > > >
> > > > > > > This has now happened twice - the second time was last night when
> > > > > > > running 2.6.24-rc2.
> > > > > > >
> > > > > > > Here's that second occurrence:
> > > > > > >
> > > > > [snip]
> > > > > >
> > > > > > Hmm.
> > > > > >
> > > > > > Please run "gdb vmlinux" and see what code corresponds to
> > > > > > check_preempt_wakeup+0x6e in your kernel.
> > > > >
> > > > >
> > > > > Dump of assembler code for function check_preempt_wakeup:
> > > >
> > > > Well, thanks, but I meant the source code. Please do "gdb vmlinux" and then
> > > > "l *check_preempt_wakeup+0x6e" in gdb.
> > >
> > > Here's the requested output:
> > >
> > > (gdb) l *check_preempt_wakeup+0x6e
> > > 0xffffffff802329ae is in check_preempt_wakeup (kernel/sched_fair.c:668).
> > > 663
> > > 664 /* Do the two (enqueued) entities belong to the same group ? */
> > > 665 static inline int
> > > 666 is_same_group(struct sched_entity *se, struct sched_entity *pse)
> > > 667 {
> > > 668 if (se->cfs_rq == pse->cfs_rq)
> > > 669 return 1;
> > > 670
> > > 671 return 0;
> > > 672 }
> >
> > Well, it looks like either se or pse is NULL.
> >
> > Ingo, can you please have a look?
>
> Most puzzling this, it should be guaranteed that the top sched_entities
> are of the same group, therefore avoiding this loop into NULL. Obviously
> something has gone wrong.
>
> Grant, is there anything specific you can tell us about how to reproduce
> this?
I'm afraid not. It has only happened twice and both times I was away
from the box in question at the time of failure, so it wasn't doing a
great deal.
I'm running 2.6.24-rc2 on two boxes and both times it happened on the
box running a quad core processor.
Grant
Grant Wilson wrote:
>
> [18073.371126] Unable to handle kernel NULL pointer dereference at 0000000000000120 RIP:
> [18073.371134] [<ffffffff8023572e>] check_preempt_wakeup+0x6e/0x110
> [18073.371144] PGD 81f9067 PUD 81c8067 PMD 0
> [18073.371151] Oops: 0000 [1] PREEMPT SMP
> [18073.371157] CPU 2
> [18073.371161] Modules linked in: vfat fat
> [18073.371168] Pid: 4639, comm: kwin Not tainted 2.6.24-rc1 #1
> [18073.371171] RIP: 0010:[<ffffffff8023572e>] [<ffffffff8023572e>] check_preempt_wakeup+0x6e/0x110
> [18073.371177] RSP: 0018:ffff810008531a78 EFLAGS: 00010006
> [18073.371179] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
> [18073.371183] RDX: ffff810004441bf0 RSI: ffff81000801e860 RDI: ffff81000444ab80
> [18073.371186] RBP: ffff810008531aa8 R08: 000000d0d47a4a90 R09: 0000000000000000
> [18073.371188] R10: ffff810004441bf0 R11: 0000000000000001 R12: ffff810006520400
> [18073.371190] R13: ffff81000801e860 R14: ffff81000a63a000 R15: ffff81000443d8e0
> [18073.371193] FS: 00002b7d646a86f0(0000) GS:ffff810004c11780(0000) knlGS:0000000000000000
> [18073.371196] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> [18073.371199] CR2: 0000000000000120 CR3: 0000000008495000 CR4: 00000000000006e0
> [18073.371202] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [18073.371211] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> [18073.371214] Process kwin (pid: 4639, threadinfo ffff810008530000, task ffff81000840a860)
> [18073.371216] Stack: ffff81000444ab80 0000000000000001 ffff81000801e860 ffff81000444ab80
> [18073.371231] 0000000000000002 ffff81000443d8e0 ffff810008531b38 ffffffff8023061e
> [18073.371238] 0000000000000000 ffff810004441b80 0000000000000002 0000000100000000
> [18073.371245] Call Trace:
> [18073.371250] [<ffffffff8023061e>] try_to_wake_up+0x2fe/0x3a0
I suspect I see the bug in that area, but I am not sure it can explain this
trace completely.
Suppose that the SCHED_FIFO task does
switch_uid(new_user);
Now, p->se.cfs_rq and p->se.parent both point into the old user_struct->tg
because sched_move_task() doesn't call set_task_cfs_rq() for !fair_sched_class
case.
Suppose that old user_struct/task_group is freed/reused, and the task does
sched_setscheduler(SCHED_NORMAL);
__setscheduler() sets fair_sched_class, but doesn't update ->se.cfs_rq/parent
which point to the freed memory.
This means that check_preempt_wakeup() doing
while (!is_same_group(se, pse)) {
se = parent_entity(se);
pse = parent_entity(pse);
}
may OOPS in a similar way if rq->curr or p did something like above.
Perhaps we need something like the patch below, note that __setscheduler()
can't do set_task_cfs_rq().
Oleg.
--- kernel/sched.c 2007-11-14 17:32:21.000000000 +0300
+++ - 2007-11-14 18:14:00.245492756 +0300
@@ -7068,8 +7068,10 @@ void sched_move_task(struct task_struct
rq = task_rq_lock(tsk, &flags);
- if (tsk->sched_class != &fair_sched_class)
+ if (tsk->sched_class != &fair_sched_class) {
+ set_task_cfs_rq(tsk);
goto done;
+ }
update_rq_clock(rq);
* Oleg Nesterov <[email protected]> wrote:
> > [18073.371126] Unable to handle kernel NULL pointer dereference at 0000000000000120 RIP:
> > [18073.371134] [<ffffffff8023572e>] check_preempt_wakeup+0x6e/0x110
> > [18073.371144] PGD 81f9067 PUD 81c8067 PMD 0
> > [18073.371151] Oops: 0000 [1] PREEMPT SMP
> > [18073.371157] CPU 2
> > [18073.371161] Modules linked in: vfat fat
> > [18073.371168] Pid: 4639, comm: kwin Not tainted 2.6.24-rc1 #1
> > [18073.371171] RIP: 0010:[<ffffffff8023572e>] [<ffffffff8023572e>] check_preempt_wakeup+0x6e/0x110
> > [18073.371177] RSP: 0018:ffff810008531a78 EFLAGS: 00010006
> > [18073.371179] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
> > [18073.371183] RDX: ffff810004441bf0 RSI: ffff81000801e860 RDI: ffff81000444ab80
> > [18073.371186] RBP: ffff810008531aa8 R08: 000000d0d47a4a90 R09: 0000000000000000
> > [18073.371188] R10: ffff810004441bf0 R11: 0000000000000001 R12: ffff810006520400
> > [18073.371190] R13: ffff81000801e860 R14: ffff81000a63a000 R15: ffff81000443d8e0
> > [18073.371193] FS: 00002b7d646a86f0(0000) GS:ffff810004c11780(0000) knlGS:0000000000000000
> > [18073.371196] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> > [18073.371199] CR2: 0000000000000120 CR3: 0000000008495000 CR4: 00000000000006e0
> > [18073.371202] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> > [18073.371211] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> > [18073.371214] Process kwin (pid: 4639, threadinfo ffff810008530000, task ffff81000840a860)
> > [18073.371216] Stack: ffff81000444ab80 0000000000000001 ffff81000801e860 ffff81000444ab80
> > [18073.371231] 0000000000000002 ffff81000443d8e0 ffff810008531b38 ffffffff8023061e
> > [18073.371238] 0000000000000000 ffff810004441b80 0000000000000002 0000000100000000
> > [18073.371245] Call Trace:
> > [18073.371250] [<ffffffff8023061e>] try_to_wake_up+0x2fe/0x3a0
>
> I suspect I see the bug in that area, but I am not sure it can explain
> this trace completely.
there's a fix pending from Dmitry - please see below. It took days for
Grant to trigger the crash so it needs some time to be confirmed but it
could explain the crash in theory.
Ingo
---------------------->
Subject: sched: fix __set_task_cpu() SMP race
From: Dmitry Adamushko <[email protected]>
Grant Wilson has reported rare SCHED_FAIR_USER crashes on his quad-core
system, which crashes can only be explained via runqueue corruption.
there is a narrow SMP race in __set_task_cpu(): after ->cpu is set up to
a new value, task_rq_lock(p, ...) can be successfuly executed on another
CPU. We must ensure that updates of per-task data have been completed by
this moment.
this bug has been hiding in the Linux scheduler for an eternity (we
never had any explicit barrier for task->cpu in set_task_cpu() - so the
bug was introduced in 2.5.1), but only became visible via
set_task_cfs_rq() being accidentally put after the task->cpu update. It
also probably needs a sufficiently out-of-order CPU to trigger.
Reported-by: Grant Wilson <[email protected]>
Signed-off-by: Dmitry Adamushko <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
---
kernel/sched.c | 18 ++++++++++++------
1 file changed, 12 insertions(+), 6 deletions(-)
Index: linux/kernel/sched.c
===================================================================
--- linux.orig/kernel/sched.c
+++ linux/kernel/sched.c
@@ -217,15 +217,15 @@ static inline struct task_group *task_gr
}
/* Change a task's cfs_rq and parent entity if it moves across CPUs/groups */
-static inline void set_task_cfs_rq(struct task_struct *p)
+static inline void set_task_cfs_rq(struct task_struct *p, unsigned int cpu)
{
- p->se.cfs_rq = task_group(p)->cfs_rq[task_cpu(p)];
- p->se.parent = task_group(p)->se[task_cpu(p)];
+ p->se.cfs_rq = task_group(p)->cfs_rq[cpu];
+ p->se.parent = task_group(p)->se[cpu];
}
#else
-static inline void set_task_cfs_rq(struct task_struct *p) { }
+static inline void set_task_cfs_rq(struct task_struct *p, unsigned int cpu) { }
#endif /* CONFIG_FAIR_GROUP_SCHED */
@@ -1023,10 +1023,16 @@ unsigned long weighted_cpuload(const int
static inline void __set_task_cpu(struct task_struct *p, unsigned int cpu)
{
+ set_task_cfs_rq(p, cpu);
#ifdef CONFIG_SMP
+ /*
+ * After ->cpu is set up to a new value, task_rq_lock(p, ...) can be
+ * successfuly executed on another CPU. We must ensure that updates of
+ * per-task data have been completed by this moment.
+ */
+ smp_wmb();
task_thread_info(p)->cpu = cpu;
#endif
- set_task_cfs_rq(p);
}
#ifdef CONFIG_SMP
@@ -7111,7 +7117,7 @@ void sched_move_task(struct task_struct
tsk->sched_class->put_prev_task(rq, tsk);
}
- set_task_cfs_rq(tsk);
+ set_task_cfs_rq(tsk, task_cpu(tsk));
if (on_rq) {
if (unlikely(running))
On 11/14, Ingo Molnar wrote:
>
> * Oleg Nesterov <[email protected]> wrote:
>
> > > [18073.371126] Unable to handle kernel NULL pointer dereference at 0000000000000120 RIP:
> > > [18073.371134] [<ffffffff8023572e>] check_preempt_wakeup+0x6e/0x110
> > > [18073.371144] PGD 81f9067 PUD 81c8067 PMD 0
> > > [18073.371151] Oops: 0000 [1] PREEMPT SMP
> > > [18073.371157] CPU 2
> > > [18073.371161] Modules linked in: vfat fat
> > > [18073.371168] Pid: 4639, comm: kwin Not tainted 2.6.24-rc1 #1
> > > [18073.371171] RIP: 0010:[<ffffffff8023572e>] [<ffffffff8023572e>] check_preempt_wakeup+0x6e/0x110
> > > [18073.371177] RSP: 0018:ffff810008531a78 EFLAGS: 00010006
> > > [18073.371179] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
> > > [18073.371183] RDX: ffff810004441bf0 RSI: ffff81000801e860 RDI: ffff81000444ab80
> > > [18073.371186] RBP: ffff810008531aa8 R08: 000000d0d47a4a90 R09: 0000000000000000
> > > [18073.371188] R10: ffff810004441bf0 R11: 0000000000000001 R12: ffff810006520400
> > > [18073.371190] R13: ffff81000801e860 R14: ffff81000a63a000 R15: ffff81000443d8e0
> > > [18073.371193] FS: 00002b7d646a86f0(0000) GS:ffff810004c11780(0000) knlGS:0000000000000000
> > > [18073.371196] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> > > [18073.371199] CR2: 0000000000000120 CR3: 0000000008495000 CR4: 00000000000006e0
> > > [18073.371202] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> > > [18073.371211] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> > > [18073.371214] Process kwin (pid: 4639, threadinfo ffff810008530000, task ffff81000840a860)
> > > [18073.371216] Stack: ffff81000444ab80 0000000000000001 ffff81000801e860 ffff81000444ab80
> > > [18073.371231] 0000000000000002 ffff81000443d8e0 ffff810008531b38 ffffffff8023061e
> > > [18073.371238] 0000000000000000 ffff810004441b80 0000000000000002 0000000100000000
> > > [18073.371245] Call Trace:
> > > [18073.371250] [<ffffffff8023061e>] try_to_wake_up+0x2fe/0x3a0
> >
> > I suspect I see the bug in that area, but I am not sure it can explain
> > this trace completely.
>
> there's a fix pending from Dmitry - please see below. It took days for
> Grant to trigger the crash so it needs some time to be confirmed but it
> could explain the crash in theory.
Yes I agree, it can explain the crash.
However, this patch can't fix the bug I was talking about (of course, unless
I missed something). It is still possible that the "fair_sched_class" task
can have ->se.cfs_rq/parent pointing to the freed memory, no?
Oleg.
* Oleg Nesterov <[email protected]> wrote:
> > > I suspect I see the bug in that area, but I am not sure it can
> > > explain this trace completely.
> >
> > there's a fix pending from Dmitry - please see below. It took days
> > for Grant to trigger the crash so it needs some time to be confirmed
> > but it could explain the crash in theory.
>
> Yes I agree, it can explain the crash.
>
> However, this patch can't fix the bug I was talking about (of course,
> unless I missed something). It is still possible that the
> "fair_sched_class" task can have ->se.cfs_rq/parent pointing to the
> freed memory, no?
yeah, agreed. I've queued up your fix for merging - thanks!
Ingo
btw., could you get your Signed-off-by line for that fix?
Ingo
On Wed, Nov 14, 2007 at 06:17:08PM +0300, Oleg Nesterov wrote:
> Suppose that old user_struct/task_group is freed/reused, and the task does
Shouldn't this old user actually be the root user_struct?
--
Regards,
vatsa
On 11/14, Srivatsa Vaddagiri wrote:
>
> On Wed, Nov 14, 2007 at 06:17:08PM +0300, Oleg Nesterov wrote:
> > Suppose that old user_struct/task_group is freed/reused, and the task does
>
> Shouldn't this old user actually be the root user_struct?
Well, the S_ISUID application can switch ->user from !root_user (note that
setuid exec doesn't change ->user), and we also have CAP_SETUID...
But yes, I agree, this all is very unlikely.
Oleg.