Unable to handle kernel NULL pointer dereference at virtual address 00000000

From: Ray Van Dolson
Date: Tue Dec 14 2004 - 20:48:44 EST

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Hoping someone can shed some light on this, or help me out in narrowing the
problem down.

Our servers exhibit these error messages (at bottom) off and on and
eventually appears to lead to system instability. I guess the three
possibilities are that this is either a) a hardware problem, b) a problem
with poptop, pppd or the mppe modules, or c) a problem with the kernel

This happens on every single one of our DL140's, so if it's a hardware
problem, then it is widespread on this platform.

If it's a problem with poptop, pppd or mppe modules I'd at least like to be
able to give some evidence to that effect...

If it's c, I'm hoping someone here can give some suggestions on how to
resolve this. :-) Please let me know if I can provide further information.
I have a box on which this happens fairly regularly, so I can reproduce it
pretty easily.

Thanks in advance!

System Specs:
HP DL140
Dual 2.4GHz P4 Xeon w/ Hyperthreading
Fedora Core 2
2.6.9 kernel (static compile, downloaded from ftp.kernel.org with the
following patches):
- http://marc.theaimsgroup.com/?l=linux-kernel&m=109926628920398
This fixes an oops I was getting in mm/prio_tree.c
- http://mdomsch.bkbits.net:8080/linux-2.6-mppe
This provides MPPE support for clients connecting via PoPToP 1.2.1.

Intel E100 Pro Dual Port NIC (Using built-in e100 driver).
Onboard Broadcom BCM5700 Gigabit NIC's are *not* in use (no driver support
compiled in)

Software:
Poptop 1.2.1
PPP 2.4.3

Kernel config:

CONFIG_X86=y
CONFIG_MMU=y
CONFIG_UID16=y
CONFIG_GENERIC_ISA_DMA=y
CONFIG_GENERIC_IOMAP=y
CONFIG_EXPERIMENTAL=y
CONFIG_CLEAN_COMPILE=y
CONFIG_LOCALVERSION=""
CONFIG_SWAP=y
CONFIG_SYSVIPC=y
CONFIG_POSIX_MQUEUE=y
CONFIG_BSD_PROCESS_ACCT=y
CONFIG_SYSCTL=y
CONFIG_AUDIT=y
CONFIG_AUDITSYSCALL=y
CONFIG_LOG_BUF_SHIFT=17
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
CONFIG_KALLSYMS=y
CONFIG_KALLSYMS_EXTRA_PASS=y
CONFIG_FUTEX=y
CONFIG_EPOLL=y
CONFIG_IOSCHED_NOOP=y
CONFIG_IOSCHED_AS=y
CONFIG_IOSCHED_DEADLINE=y
CONFIG_IOSCHED_CFQ=y
CONFIG_SHMEM=y
CONFIG_X86_PC=y
CONFIG_MPENTIUM4=y
CONFIG_X86_GENERIC=y
CONFIG_X86_CMPXCHG=y
CONFIG_X86_XADD=y
CONFIG_X86_L1_CACHE_SHIFT=7
CONFIG_RWSEM_XCHGADD_ALGORITHM=y
CONFIG_X86_WP_WORKS_OK=y
CONFIG_X86_INVLPG=y
CONFIG_X86_BSWAP=y
CONFIG_X86_POPAD_OK=y
CONFIG_X86_GOOD_APIC=y
CONFIG_X86_INTEL_USERCOPY=y
CONFIG_X86_USE_PPRO_CHECKSUM=y
CONFIG_HPET_TIMER=y
CONFIG_HPET_EMULATE_RTC=y
CONFIG_SMP=y
CONFIG_NR_CPUS=8
CONFIG_SCHED_SMT=y
CONFIG_X86_LOCAL_APIC=y
CONFIG_X86_IO_APIC=y
CONFIG_X86_TSC=y
CONFIG_X86_MCE=y
CONFIG_X86_MCE_NONFATAL=y
CONFIG_X86_MCE_P4THERMAL=y
CONFIG_MICROCODE=y
CONFIG_X86_MSR=y
CONFIG_X86_CPUID=y
CONFIG_HIGHMEM4G=y
CONFIG_HIGHMEM=y
CONFIG_HIGHPTE=y
CONFIG_MTRR=y
CONFIG_IRQBALANCE=y
CONFIG_HAVE_DEC_LOCK=y
CONFIG_ACPI=y
CONFIG_ACPI_BOOT=y
CONFIG_ACPI_INTERPRETER=y
CONFIG_ACPI_AC=y
CONFIG_ACPI_BATTERY=y
CONFIG_ACPI_BUTTON=y
CONFIG_ACPI_FAN=y
CONFIG_ACPI_PROCESSOR=y
CONFIG_ACPI_THERMAL=y
CONFIG_ACPI_ASUS=y
CONFIG_ACPI_TOSHIBA=y
CONFIG_ACPI_BLACKLIST_YEAR=2001
CONFIG_ACPI_BUS=y
CONFIG_ACPI_EC=y
CONFIG_ACPI_POWER=y
CONFIG_ACPI_PCI=y
CONFIG_ACPI_SYSTEM=y
CONFIG_X86_PM_TIMER=y
CONFIG_PCI=y
CONFIG_PCI_GOANY=y
CONFIG_PCI_BIOS=y
CONFIG_PCI_DIRECT=y
CONFIG_PCI_MMCONFIG=y
CONFIG_PCI_LEGACY_PROC=y
CONFIG_PCI_NAMES=y
CONFIG_ISA=y
CONFIG_BINFMT_ELF=y
CONFIG_BINFMT_MISC=y
CONFIG_STANDALONE=y
CONFIG_PREVENT_FIRMWARE_BUILD=y
CONFIG_PNP=y
CONFIG_ISAPNP=y
CONFIG_BLK_DEV_FD=y
CONFIG_BLK_DEV_LOOP=y
CONFIG_BLK_DEV_CRYPTOLOOP=y
CONFIG_BLK_DEV_NBD=y
CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_SIZE=16384
CONFIG_BLK_DEV_INITRD=y
CONFIG_LBD=y
CONFIG_IDE=y
CONFIG_BLK_DEV_IDE=y
CONFIG_BLK_DEV_IDEDISK=y
CONFIG_IDEDISK_MULTI_MODE=y
CONFIG_BLK_DEV_IDECD=y
CONFIG_BLK_DEV_IDESCSI=y
CONFIG_IDE_GENERIC=y
CONFIG_BLK_DEV_IDEPCI=y
CONFIG_IDEPCI_SHARE_IRQ=y
CONFIG_BLK_DEV_GENERIC=y
CONFIG_BLK_DEV_IDEDMA_PCI=y
CONFIG_IDEDMA_PCI_AUTO=y
CONFIG_BLK_DEV_SVWKS=y
CONFIG_BLK_DEV_IDEDMA=y
CONFIG_IDEDMA_AUTO=y
CONFIG_SCSI=y
CONFIG_BLK_DEV_SD=y
CONFIG_BLK_DEV_SR=y
CONFIG_BLK_DEV_SR_VENDOR=y
CONFIG_CHR_DEV_SG=y
CONFIG_SCSI_SPI_ATTRS=y
CONFIG_SCSI_FC_ATTRS=y
CONFIG_SCSI_QLA2XXX=y
CONFIG_I2O=y
CONFIG_I2O_CONFIG=y
CONFIG_I2O_BLOCK=y
CONFIG_I2O_SCSI=y
CONFIG_I2O_PROC=y
CONFIG_NET=y
CONFIG_PACKET=y
CONFIG_PACKET_MMAP=y
CONFIG_NETLINK_DEV=y
CONFIG_UNIX=y
CONFIG_NET_KEY=y
CONFIG_INET=y
CONFIG_IP_ADVANCED_ROUTER=y
CONFIG_IP_MULTIPLE_TABLES=y
CONFIG_IP_ROUTE_FWMARK=y
CONFIG_IP_ROUTE_MULTIPATH=y
CONFIG_IP_ROUTE_VERBOSE=y
CONFIG_NET_IPIP=y
CONFIG_NET_IPGRE=y
CONFIG_SYN_COOKIES=y
CONFIG_INET_AH=y
CONFIG_INET_ESP=y
CONFIG_INET_IPCOMP=y
CONFIG_INET_TUNNEL=y
CONFIG_NETFILTER=y
CONFIG_IP_NF_CONNTRACK=y
CONFIG_IP_NF_CT_ACCT=y
CONFIG_IP_NF_CT_PROTO_SCTP=y
CONFIG_IP_NF_FTP=y
CONFIG_IP_NF_IRC=y
CONFIG_IP_NF_TFTP=y
CONFIG_IP_NF_AMANDA=y
CONFIG_IP_NF_QUEUE=y
CONFIG_IP_NF_IPTABLES=y
CONFIG_IP_NF_MATCH_LIMIT=y
CONFIG_IP_NF_MATCH_IPRANGE=y
CONFIG_IP_NF_MATCH_MAC=y
CONFIG_IP_NF_MATCH_PKTTYPE=y
CONFIG_IP_NF_MATCH_MARK=y
CONFIG_IP_NF_MATCH_MULTIPORT=y
CONFIG_IP_NF_MATCH_TOS=y
CONFIG_IP_NF_MATCH_RECENT=y
CONFIG_IP_NF_MATCH_ECN=y
CONFIG_IP_NF_MATCH_DSCP=y
CONFIG_IP_NF_MATCH_AH_ESP=y
CONFIG_IP_NF_MATCH_LENGTH=y
CONFIG_IP_NF_MATCH_TTL=y
CONFIG_IP_NF_MATCH_TCPMSS=y
CONFIG_IP_NF_MATCH_HELPER=y
CONFIG_IP_NF_MATCH_STATE=y
CONFIG_IP_NF_MATCH_CONNTRACK=y
CONFIG_IP_NF_MATCH_OWNER=y
CONFIG_IP_NF_MATCH_ADDRTYPE=y
CONFIG_IP_NF_MATCH_REALM=y
CONFIG_IP_NF_MATCH_SCTP=y
CONFIG_IP_NF_MATCH_COMMENT=y
CONFIG_IP_NF_FILTER=y
CONFIG_IP_NF_TARGET_REJECT=y
CONFIG_IP_NF_TARGET_LOG=y
CONFIG_IP_NF_TARGET_ULOG=y
CONFIG_IP_NF_TARGET_TCPMSS=y
CONFIG_IP_NF_NAT=y
CONFIG_IP_NF_NAT_NEEDED=y
CONFIG_IP_NF_TARGET_MASQUERADE=y
CONFIG_IP_NF_TARGET_REDIRECT=y
CONFIG_IP_NF_TARGET_NETMAP=y
CONFIG_IP_NF_TARGET_SAME=y
CONFIG_IP_NF_NAT_LOCAL=y
CONFIG_IP_NF_NAT_SNMP_BASIC=y
CONFIG_IP_NF_NAT_IRC=y
CONFIG_IP_NF_NAT_FTP=y
CONFIG_IP_NF_NAT_TFTP=y
CONFIG_IP_NF_NAT_AMANDA=y
CONFIG_IP_NF_MANGLE=y
CONFIG_IP_NF_TARGET_TOS=y
CONFIG_IP_NF_TARGET_ECN=y
CONFIG_IP_NF_TARGET_DSCP=y
CONFIG_IP_NF_TARGET_MARK=y
CONFIG_IP_NF_TARGET_CLASSIFY=y
CONFIG_IP_NF_RAW=y
CONFIG_IP_NF_TARGET_NOTRACK=y
CONFIG_IP_NF_ARPTABLES=y
CONFIG_IP_NF_ARPFILTER=y
CONFIG_IP_NF_ARP_MANGLE=y
CONFIG_XFRM=y
CONFIG_XFRM_USER=y
CONFIG_NET_DIVERT=y
CONFIG_NET_SCHED=y
CONFIG_NET_SCH_CLK_JIFFIES=y
CONFIG_NET_SCH_CBQ=y
CONFIG_NET_SCH_HTB=y
CONFIG_NET_SCH_HFSC=y
CONFIG_NET_SCH_PRIO=y
CONFIG_NET_SCH_RED=y
CONFIG_NET_SCH_SFQ=y
CONFIG_NET_SCH_TEQL=y
CONFIG_NET_SCH_TBF=y
CONFIG_NET_SCH_GRED=y
CONFIG_NET_SCH_DSMARK=y
CONFIG_NET_SCH_NETEM=y
CONFIG_NET_SCH_INGRESS=y
CONFIG_NET_QOS=y
CONFIG_NET_ESTIMATOR=y
CONFIG_NET_CLS=y
CONFIG_NET_CLS_TCINDEX=y
CONFIG_NET_CLS_ROUTE4=y
CONFIG_NET_CLS_ROUTE=y
CONFIG_NET_CLS_FW=y
CONFIG_NET_CLS_U32=y
CONFIG_CLS_U32_PERF=y
CONFIG_NET_CLS_IND=y
CONFIG_NET_CLS_RSVP=y
CONFIG_NET_CLS_RSVP6=y
CONFIG_NET_CLS_POLICE=y
CONFIG_NETPOLL=y
CONFIG_NET_POLL_CONTROLLER=y
CONFIG_NETDEVICES=y
CONFIG_DUMMY=y
CONFIG_NET_ETHERNET=y
CONFIG_MII=y
CONFIG_NET_PCI=y
CONFIG_E100=y
CONFIG_PPP=y
CONFIG_PPP_MULTILINK=y
CONFIG_PPP_FILTER=y
CONFIG_PPP_ASYNC=y
CONFIG_PPP_SYNC_TTY=y
CONFIG_PPP_DEFLATE=y
CONFIG_PPP_BSDCOMP=y
CONFIG_PPP_MPPE=y
CONFIG_NETCONSOLE=y
CONFIG_INPUT=y
CONFIG_INPUT_MOUSEDEV=y
CONFIG_INPUT_MOUSEDEV_SCREEN_X=1024
CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768
CONFIG_SOUND_GAMEPORT=y
CONFIG_SERIO=y
CONFIG_SERIO_I8042=y
CONFIG_INPUT_KEYBOARD=y
CONFIG_KEYBOARD_ATKBD=y
CONFIG_INPUT_MOUSE=y
CONFIG_MOUSE_PS2=y
CONFIG_MOUSE_SERIAL=y
CONFIG_INPUT_MISC=y
CONFIG_INPUT_PCSPKR=y
CONFIG_INPUT_UINPUT=y
CONFIG_VT=y
CONFIG_VT_CONSOLE=y
CONFIG_HW_CONSOLE=y
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_8250_NR_UARTS=1024
CONFIG_SERIAL_8250_EXTENDED=y
CONFIG_SERIAL_8250_SHARE_IRQ=y
CONFIG_SERIAL_8250_DETECT_IRQ=y
CONFIG_SERIAL_8250_MULTIPORT=y
CONFIG_SERIAL_8250_RSA=y
CONFIG_SERIAL_CORE=y
CONFIG_SERIAL_CORE_CONSOLE=y
CONFIG_UNIX98_PTYS=y
CONFIG_IPMI_HANDLER=y
CONFIG_IPMI_DEVICE_INTERFACE=y
CONFIG_IPMI_SI=y
CONFIG_IPMI_WATCHDOG=y
CONFIG_IPMI_POWEROFF=y
CONFIG_HW_RANDOM=y
CONFIG_NVRAM=y
CONFIG_RTC=y
CONFIG_AGP=y
CONFIG_AGP_ATI=y
CONFIG_AGP_INTEL=y
CONFIG_HANGCHECK_TIMER=y
CONFIG_I2C=y
CONFIG_I2C_CHARDEV=y
CONFIG_I2C_ALGOBIT=y
CONFIG_I2C_ALGOPCF=y
CONFIG_I2C_ALGOPCA=y
CONFIG_I2C_I801=y
CONFIG_I2C_I810=y
CONFIG_I2C_ISA=y
CONFIG_I2C_PIIX4=y
CONFIG_I2C_SENSOR=y
CONFIG_SENSORS_ADM1021=y
CONFIG_SENSORS_ADM1025=y
CONFIG_SENSORS_ADM1031=y
CONFIG_SENSORS_ASB100=y
CONFIG_SENSORS_DS1621=y
CONFIG_SENSORS_FSCHER=y
CONFIG_SENSORS_GL518SM=y
CONFIG_SENSORS_IT87=y
CONFIG_SENSORS_LM75=y
CONFIG_SENSORS_LM77=y
CONFIG_SENSORS_LM78=y
CONFIG_SENSORS_LM80=y
CONFIG_SENSORS_LM83=y
CONFIG_SENSORS_LM85=y
CONFIG_SENSORS_LM90=y
CONFIG_SENSORS_MAX1619=y
CONFIG_SENSORS_SMSC47M1=y
CONFIG_SENSORS_VIA686A=y
CONFIG_SENSORS_W83781D=y
CONFIG_SENSORS_W83L785TS=y
CONFIG_SENSORS_W83627HF=y
CONFIG_SENSORS_EEPROM=y
CONFIG_SENSORS_PCF8574=y
CONFIG_SENSORS_PCF8591=y
CONFIG_SENSORS_RTC8564=y
CONFIG_VIDEO_DEV=y
CONFIG_VIDEO_SELECT=y
CONFIG_VGA_CONSOLE=y
CONFIG_DUMMY_CONSOLE=y
CONFIG_EXT2_FS=y
CONFIG_EXT2_FS_XATTR=y
CONFIG_EXT2_FS_POSIX_ACL=y
CONFIG_EXT2_FS_SECURITY=y
CONFIG_EXT3_FS=y
CONFIG_EXT3_FS_XATTR=y
CONFIG_EXT3_FS_POSIX_ACL=y
CONFIG_EXT3_FS_SECURITY=y
CONFIG_JBD=y
CONFIG_FS_MBCACHE=y
CONFIG_FS_POSIX_ACL=y
CONFIG_ROMFS_FS=y
CONFIG_AUTOFS_FS=y
CONFIG_AUTOFS4_FS=y
CONFIG_ISO9660_FS=y
CONFIG_JOLIET=y
CONFIG_ZISOFS=y
CONFIG_ZISOFS_FS=y
CONFIG_UDF_FS=y
CONFIG_UDF_NLS=y
CONFIG_PROC_FS=y
CONFIG_PROC_KCORE=y
CONFIG_SYSFS=y
CONFIG_TMPFS=y
CONFIG_RAMFS=y
CONFIG_NFS_FS=y
CONFIG_NFS_V3=y
CONFIG_NFS_V4=y
CONFIG_NFS_DIRECTIO=y
CONFIG_NFSD=y
CONFIG_NFSD_V3=y
CONFIG_NFSD_V4=y
CONFIG_NFSD_TCP=y
CONFIG_LOCKD=y
CONFIG_LOCKD_V4=y
CONFIG_EXPORTFS=y
CONFIG_SUNRPC=y
CONFIG_SUNRPC_GSS=y
CONFIG_RPCSEC_GSS_KRB5=y
CONFIG_SMB_FS=y
CONFIG_CIFS=y
CONFIG_CIFS_XATTR=y
CONFIG_CIFS_POSIX=y
CONFIG_PARTITION_ADVANCED=y
CONFIG_OSF_PARTITION=y
CONFIG_MAC_PARTITION=y
CONFIG_MSDOS_PARTITION=y
CONFIG_BSD_DISKLABEL=y
CONFIG_MINIX_SUBPARTITION=y
CONFIG_SOLARIS_X86_PARTITION=y
CONFIG_UNIXWARE_DISKLABEL=y
CONFIG_SGI_PARTITION=y
CONFIG_SUN_PARTITION=y
CONFIG_EFI_PARTITION=y
CONFIG_NLS=y
CONFIG_NLS_DEFAULT="utf8"
CONFIG_NLS_CODEPAGE_437=y
CONFIG_NLS_CODEPAGE_737=y
CONFIG_NLS_CODEPAGE_775=y
CONFIG_NLS_CODEPAGE_850=y
CONFIG_NLS_CODEPAGE_852=y
CONFIG_NLS_CODEPAGE_855=y
CONFIG_NLS_CODEPAGE_857=y
CONFIG_NLS_CODEPAGE_860=y
CONFIG_NLS_CODEPAGE_861=y
CONFIG_NLS_CODEPAGE_862=y
CONFIG_NLS_CODEPAGE_863=y
CONFIG_NLS_CODEPAGE_864=y
CONFIG_NLS_CODEPAGE_865=y
CONFIG_NLS_CODEPAGE_866=y
CONFIG_NLS_CODEPAGE_869=y
CONFIG_NLS_CODEPAGE_936=y
CONFIG_NLS_CODEPAGE_950=y
CONFIG_NLS_CODEPAGE_932=y
CONFIG_NLS_CODEPAGE_949=y
CONFIG_NLS_CODEPAGE_874=y
CONFIG_NLS_ISO8859_8=y
CONFIG_NLS_CODEPAGE_1250=y
CONFIG_NLS_CODEPAGE_1251=y
CONFIG_NLS_ASCII=y
CONFIG_NLS_ISO8859_1=y
CONFIG_NLS_ISO8859_2=y
CONFIG_NLS_ISO8859_3=y
CONFIG_NLS_ISO8859_4=y
CONFIG_NLS_ISO8859_5=y
CONFIG_NLS_ISO8859_6=y
CONFIG_NLS_ISO8859_7=y
CONFIG_NLS_ISO8859_9=y
CONFIG_NLS_ISO8859_13=y
CONFIG_NLS_ISO8859_14=y
CONFIG_NLS_ISO8859_15=y
CONFIG_NLS_KOI8_R=y
CONFIG_NLS_KOI8_U=y
CONFIG_NLS_UTF8=y
CONFIG_DEBUG_KERNEL=y
CONFIG_MAGIC_SYSRQ=y
CONFIG_EARLY_PRINTK=y
CONFIG_DEBUG_STACKOVERFLOW=y
CONFIG_DEBUG_STACK_USAGE=y
CONFIG_X86_FIND_SMP_CONFIG=y
CONFIG_X86_MPPARSE=y
CONFIG_CRYPTO=y
CONFIG_CRYPTO_HMAC=y
CONFIG_CRYPTO_NULL=y
CONFIG_CRYPTO_MD4=y
CONFIG_CRYPTO_MD5=y
CONFIG_CRYPTO_SHA1=y
CONFIG_CRYPTO_SHA256=y
CONFIG_CRYPTO_SHA512=y
CONFIG_CRYPTO_WP512=y
CONFIG_CRYPTO_DES=y
CONFIG_CRYPTO_BLOWFISH=y
CONFIG_CRYPTO_TWOFISH=y
CONFIG_CRYPTO_SERPENT=y
CONFIG_CRYPTO_AES_586=y
CONFIG_CRYPTO_CAST5=y
CONFIG_CRYPTO_CAST6=y
CONFIG_CRYPTO_TEA=y
CONFIG_CRYPTO_ARC4=y
CONFIG_CRYPTO_KHAZAD=y
CONFIG_CRYPTO_DEFLATE=y
CONFIG_CRYPTO_MICHAEL_MIC=y
CONFIG_CRYPTO_CRC32C=y
CONFIG_CRC_CCITT=y
CONFIG_CRC32=y
CONFIG_LIBCRC32C=y
CONFIG_ZLIB_INFLATE=y
CONFIG_ZLIB_DEFLATE=y
CONFIG_X86_SMP=y
CONFIG_X86_HT=y
CONFIG_X86_BIOS_REBOOT=y
CONFIG_X86_TRAMPOLINE=y
CONFIG_PC=y

lspci output:

00:00.0 Host bridge: ServerWorks GCNB-LE Host Bridge (rev 32)
00:00.1 Host bridge: ServerWorks GCNB-LE Host Bridge
00:03.0 VGA compatible controller: ATI Technologies Inc Rage XL (rev 27)
00:0f.0 ISA bridge: ServerWorks CSB6 South Bridge (rev a0)
00:0f.1 IDE interface: ServerWorks CSB6 RAID/IDE Controller (rev a0)
00:0f.2 USB Controller: ServerWorks CSB6 OHCI USB Controller (rev 05)
00:0f.3 Host bridge: ServerWorks GCLE-2 Host Bridge
00:10.0 Host bridge: ServerWorks CIOB-E I/O Bridge with Gigabit Ethernet (rev 12)
00:10.2 Host bridge: ServerWorks CIOB-E I/O Bridge with Gigabit Ethernet (rev 12)
01:06.0 PCI bridge: Digital Equipment Corporation DECchip 21152 (rev 03)
02:04.0 Ethernet controller: Intel Corp. 82557/8/9 [Ethernet Pro 100] (rev 05)
02:05.0 Ethernet controller: Intel Corp. 82557/8/9 [Ethernet Pro 100] (rev 05)
03:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5704 Gigabit Ethernet (rev 02)
03:00.1 Ethernet controller: Broadcom Corporation NetXtreme BCM5704 Gigabit Ethernet (rev 02)

ksymoops output of problem:

ksymoops 2.4.9 on i686 2.6.9. Options used
-V (default)
-K (specified)
-l /proc/modules (default)
-O (specified)
-m /boot/System.map (specified)

No ksyms, skipping lsmod
Unable to handle kernel NULL pointer dereference<7>divert: not allocating divert_blk for non-ethernet device ppp440
00000000
*pde = 00000000
Oops: 0000 [#1]
CPU: 2
EIP: 0060:[<00000000>] Not tainted VLI
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010286 (2.6.9)
eax: ed13b000 ebx: d1d0a000 ecx: c029e9de edx: f795ef40
esi: d1d0a000 edi: 00000000 ebp: e2f30080 esp: d2b0dea0
ds: 007b es: 007b ss: 0068
Stack: c02a205a ed13b000 00000000 c02a122c d1d0a000 13208a2e c040956f d1d0a000
d1d0a00c e2f30080 00000000 c029cda9 d1d0a000 e2f30080 00000000 c01552cd
e2f30080 00000010 00000004 00000004 c0166aa0 e2f30080 00000000 00000000
Call Trace:
[<c02a205a>] pty_chars_in_buffer+0x2c/0x49
[<c02a122c>] normal_poll+0xed/0x150
[<c040956f>] schedule_timeout+0x75/0xbf
[<c029cda9>] tty_poll+0xa0/0xb0
[<c01552cd>] fget+0x49/0x5e
[<c0166aa0>] do_select+0x269/0x2c6
[<c0166691>] __pollwait+0x0/0xc7
[<c0166dd5>] sys_select+0x2b3/0x4c6
[<c0105971>] sysenter_past_esp+0x52/0x71
Code: Bad EIP value.

>>EIP; 00000000 Before first symbol

>>eax; ed13b000 <pg0+2ca80000/3f943400>
>>ebx; d1d0a000 <pg0+1164f000/3f943400>
>>ecx; c029e9de <n_tty_chars_in_buffer+0/78>
>>edx; f795ef40 <pg0+372a3f40/3f943400>
>>esi; d1d0a000 <pg0+1164f000/3f943400>
>>ebp; e2f30080 <pg0+22875080/3f943400>
>>esp; d2b0dea0 <pg0+12452ea0/3f943400>

Trace; c02a205a <pty_chars_in_buffer+2c/49>
Trace; c02a122c <normal_poll+ed/150>
Trace; c040956f <schedule_timeout+75/bf>
Trace; c029cda9 <tty_poll+a0/b0>
Trace; c01552cd <fget+49/5e>
Trace; c0166aa0 <do_select+269/2c6>
Trace; c0166691 <__pollwait+0/c7>
Trace; c0166dd5 <sys_select+2b3/4c6>
Trace; c0105971 <sysenter_past_esp+52/71>

Yet another ksymoops output:

ksymoops 2.4.9 on i686 2.6.9. Options used
-V (default)
-K (specified)
-l /proc/modules (default)
-O (specified)
-m /boot/System.map (specified)

No ksyms, skipping lsmod
Unable to handle kernel NULL pointer dereference<7>divert: not allocating divert_blk for non-ethernet device ppp504
00000000
*pde = 00000000
Oops: 0000 [#2]
CPU: 2
EIP: 0060:[<00000000>] Not tainted VLI
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010286 (2.6.9)
eax: cc8ae000 ebx: d46ca000 ecx: c029e9de edx: f7801880
esi: d46ca000 edi: 00000000 ebp: e16a1d80 esp: d2907ea0
ds: 007b es: 007b ss: 0068
Stack: c02a205a cc8ae000 00000000 c02a122c d46ca000 1da86df5 c040956f d46ca000
d46ca00c e16a1d80 00000000 c029cda9 d46ca000 e16a1d80 00000000 c01552cd
e16a1d80 00000010 00000004 00000004 c0166aa0 e16a1d80 00000000 00000000
Call Trace:
[<c02a205a>] pty_chars_in_buffer+0x2c/0x49
[<c02a122c>] normal_poll+0xed/0x150
[<c040956f>] schedule_timeout+0x75/0xbf
[<c029cda9>] tty_poll+0xa0/0xb0
[<c01552cd>] fget+0x49/0x5e
[<c0166aa0>] do_select+0x269/0x2c6
[<c0166691>] __pollwait+0x0/0xc7
[<c0166dd5>] sys_select+0x2b3/0x4c6
[<c0105971>] sysenter_past_esp+0x52/0x71
Code: Bad EIP value.

>>EIP; 00000000 Before first symbol

>>eax; cc8ae000 <pg0+c1f3000/3f943400>
>>ebx; d46ca000 <pg0+1400f000/3f943400>
>>ecx; c029e9de <n_tty_chars_in_buffer+0/78>
>>edx; f7801880 <pg0+37146880/3f943400>
>>esi; d46ca000 <pg0+1400f000/3f943400>
>>ebp; e16a1d80 <pg0+20fe6d80/3f943400>
>>esp; d2907ea0 <pg0+1224cea0/3f943400>

Trace; c02a205a <pty_chars_in_buffer+2c/49>
Trace; c02a122c <normal_poll+ed/150>
Trace; c040956f <schedule_timeout+75/bf>
Trace; c029cda9 <tty_poll+a0/b0>
Trace; c01552cd <fget+49/5e>
Trace; c0166aa0 <do_select+269/2c6>
Trace; c0166691 <__pollwait+0/c7>
Trace; c0166dd5 <sys_select+2b3/4c6>
Trace; c0105971 <sysenter_past_esp+52/71>
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