oops: /dev/socksys

Roman Drahtmueller (draht2@rzlin1.ruf.uni-freiburg.de)
Thu, 5 Nov 1998 07:21:57 +0100 (MET)


Someone posted a message to bugtraq that "head -32c
/dev/socksys" halts a kernel. For 2.0.35+ac_pre12 (and up?) this is
wrong: Proper reaction ("head: /dev/socksys: Invalid argument"). Said
person claimed that for 2.0.34.

ibcs-2.1-980830-ALPHA worked fine so far for me (SCO adsm client)
with kernel up to 2.1.125+pre-126-ac2. But the head of /dev/socksys
halted this kernel.
2.1.126+testing-pre127-7 reacts with an oops, both for the adsm
binary as well as with the head on /dev/socksys.
Cost some dozen files and 2 hours.

2 oopses. One from the shellscript running the binary, the other from
head -32c /dev/socksys later on. But no halt/reboot/whatever.

Unable to handle kernel NULL pointer dereference at virtual address 00000004
current->tss.cr3 = 01c9b000, %cr3 = 01c9b000
*pde = 00000000
Oops: 0000
CPU: 0
EIP: 0010:[<c8885c03>]
EFLAGS: 00010286
eax: 00000000 ebx: c15d3e78 ecx: c7640ca0 edx: 00000000
esi: 00000000 edi: 00000003 ebp: c5e59ac0 esp: c15d3da0
ds: 0018 es: 0018 ss: 0018
Process cron.backup (pid: 2217, process nr: 123, stackpage=c15d3000)
Stack: c15d2000 c15d3e64 c5e59a20 00000000 c0108b04 000008aa 00000000 80000000
00000000 00000004 0001f75c ffffff00 c15d001c c15d0004 00000000 00000003
000000d4 00000000 00000001 00000001 00000001 c5e59a70 c5e59a48 c5e59a20
Call Trace: [<c0108b04>] [<c888683e>] [<c012dd13>] [<c012df8c>] [<c010791b>] [<c0108b04>]
Code: 39 78 04 76 06 8b 40 08 8b 14 b8 89 54 24 40 eb 14 8d b6 00

Using `/boot/System.map' to map addresses to symbols.

>>EIP: c8885c03 cannot be resolved
Trace: c0108b04 <system_call+34/40>
Trace: c888683e
Trace: c012dd13 <search_binary_handler+3b/120>
Trace: c012df8c <do_execve+194/1d8>
Trace: c010791b <sys_execve+4b/88>
Trace: c0108b04 <system_call+34/40>
Code:
Code: 39 78 04 cmpl %edi,0x4(%eax)
Code: 76 06 jbe b <_EIP+0xb>
Code: 8b 40 08 movl 0x8(%eax),%eax
Code: 8b 14 b8 movl (%eax,%edi,4),%edx
Code: 89 54 24 40 movl %edx,0x40(%esp,1)
Code: eb 14 jmp 25 <_EIP+0x25>
Code: 8d b6 00 00 90 leal 0x90900000(%esi),%esi
Code: 90 nop

Unable to handle kernel NULL pointer dereference at virtual address 00000004
current->tss.cr3 = 01b9a000, %cr3 = 01b9a000
*pde = 00000000
Oops: 0000
CPU: 0
EIP: 0010:[<c887a6e8>]
EFLAGS: 00010246
eax: 00000000 ebx: c5dd00c0 ecx: c887a6b0 edx: 00000000
esi: 00000000 edi: c0900000 ebp: c5dd00d4 esp: c0901f8c
ds: 0018 es: 0018 ss: 0018
Process head (pid: 2610, process nr: 84, stackpage=c0901000)
Stack: bfffe508 00001000 c01270c6 c5dd00c0 bfffe508 00001000 c5dd00d4 c0900000
bfffe508 00000003 bfffe4c8 00000000 00000000 c0108b04 00000003 bfffe508
00001000 bfffe508 00000003 bfffe4c8 00000003 0000002b 0000002b 00000003
Call Trace: [<c01270c6>] [<c0108b04>]
Code: 39 70 04 76 06 8b 40 08 8b 14 b0 39 da 0f 85 85 00 00 00 6a

Using `/boot/System.map' to map addresses to symbols.

>>EIP: c887a6e8 cannot be resolved
Trace: c01270c6 <sys_read+da/140>
Trace: c0108b04 <system_call+34/40>
Code:
Code: 39 70 04 cmpl %esi,0x4(%eax)
Code: 76 06 jbe b <_EIP+0xb>
Code: 8b 40 08 movl 0x8(%eax),%eax
Code: 8b 14 b0 movl (%eax,%esi,4),%edx
Code: 39 da cmpl %ebx,%edx
Code: 0f 85 85 00 00 jne 98 <_EIP+0x98>
Code: 6a 00 pushl $0x0
Code: 90 nop
Code: 90 nop
Code: 90 nop

#
# Automatically generated by make menuconfig: don't edit
#

#
# Code maturity level options
#
CONFIG_EXPERIMENTAL=y

#
# Processor type and features
#
# CONFIG_M386 is not set
# CONFIG_M486 is not set
CONFIG_M586=y
# CONFIG_M686 is not set
# CONFIG_MATH_EMULATION is not set
# CONFIG_MTRR is not set

#
# Loadable module support
#
CONFIG_MODULES=y
# CONFIG_MODVERSIONS is not set
CONFIG_KMOD=y

#
# General setup
#
CONFIG_NET=y
CONFIG_PCI=y
CONFIG_PCI_BIOS=y
CONFIG_PCI_DIRECT=y
CONFIG_PCI_QUIRKS=y
CONFIG_PCI_OPTIMIZE=y
CONFIG_PCI_OLD_PROC=y
# CONFIG_MCA is not set
CONFIG_SYSVIPC=y
CONFIG_BSD_PROCESS_ACCT=y
CONFIG_SYSCTL=y
CONFIG_BINFMT_AOUT=m
CONFIG_BINFMT_ELF=y
CONFIG_BINFMT_MISC=m
# CONFIG_BINFMT_JAVA is not set
CONFIG_PARPORT=m
CONFIG_PARPORT_PC=m
# CONFIG_PARPORT_OTHER is not set
CONFIG_APM=y
CONFIG_APM_IGNORE_USER_SUSPEND=y
CONFIG_APM_DO_ENABLE=y
CONFIG_APM_CPU_IDLE=y
# CONFIG_APM_DISPLAY_BLANK is not set
CONFIG_APM_POWER_OFF=y
CONFIG_APM_IGNORE_MULTIPLE_SUSPEND=y

#
# Plug and Play support
#
# CONFIG_PNP is not set

#
# Block devices
#
CONFIG_BLK_DEV_FD=m
CONFIG_BLK_DEV_IDE=y
# CONFIG_BLK_DEV_HD_IDE is not set
CONFIG_BLK_DEV_IDEDISK=y
# CONFIG_BLK_DEV_IDECD is not set
# CONFIG_BLK_DEV_IDETAPE is not set
# CONFIG_BLK_DEV_IDEFLOPPY is not set
CONFIG_BLK_DEV_IDESCSI=m
# CONFIG_BLK_DEV_CMD640 is not set
# CONFIG_BLK_DEV_RZ1000 is not set
CONFIG_BLK_DEV_IDEPCI=y
CONFIG_BLK_DEV_IDEDMA=y
# CONFIG_BLK_DEV_OFFBOARD is not set
# CONFIG_IDEDMA_AUTO is not set
# CONFIG_BLK_DEV_OPTI621 is not set
# CONFIG_BLK_DEV_TRM290 is not set
# CONFIG_BLK_DEV_NS87415 is not set
# CONFIG_BLK_DEV_VIA82C586 is not set
# CONFIG_BLK_DEV_CMD646 is not set
# CONFIG_IDE_CHIPSETS is not set
CONFIG_BLK_DEV_LOOP=m
CONFIG_BLK_DEV_NBD=m
CONFIG_BLK_DEV_MD=y
CONFIG_MD_LINEAR=m
CONFIG_MD_STRIPED=m
CONFIG_MD_MIRRORING=m
CONFIG_MD_RAID5=m
CONFIG_BLK_DEV_RAM=m
CONFIG_BLK_DEV_XD=m
CONFIG_PARIDE_PARPORT=m
# CONFIG_PARIDE is not set
# CONFIG_BLK_DEV_HD is not set

#
# Networking options
#
CONFIG_PACKET=y
CONFIG_NETLINK=y
CONFIG_RTNETLINK=y
CONFIG_NETLINK_DEV=y
CONFIG_FIREWALL=y
CONFIG_NET_ALIAS=y
CONFIG_FILTER=y
CONFIG_UNIX=y
CONFIG_INET=y
CONFIG_IP_MULTICAST=y
CONFIG_IP_ADVANCED_ROUTER=y
CONFIG_RTNETLINK=y
CONFIG_NETLINK=y
CONFIG_IP_MULTIPLE_TABLES=y
CONFIG_IP_ROUTE_MULTIPATH=y
CONFIG_IP_ROUTE_TOS=y
CONFIG_IP_ROUTE_VERBOSE=y
CONFIG_IP_ROUTE_LARGE_TABLES=y
CONFIG_IP_ROUTE_NAT=y
# CONFIG_IP_PNP is not set
CONFIG_IP_FIREWALL=y
CONFIG_IP_FIREWALL_NETLINK=y
CONFIG_NETLINK_DEV=y
CONFIG_IP_TRANSPARENT_PROXY=y
CONFIG_IP_ALWAYS_DEFRAG=y
CONFIG_IP_MASQUERADE=y
CONFIG_IP_MASQUERADE_ICMP=y
# CONFIG_IP_MASQUERADE_MOD is not set
# CONFIG_IP_ROUTER is not set
CONFIG_NET_IPIP=m
CONFIG_NET_IPGRE=m
# CONFIG_NET_IPGRE_BROADCAST is not set
CONFIG_IP_MROUTE=y
CONFIG_IP_PIMSM_V1=y
# CONFIG_IP_PIMSM_V2 is not set
CONFIG_IP_ALIAS=y
# CONFIG_ARPD is not set
CONFIG_SYN_COOKIES=y
CONFIG_INET_RARP=m
CONFIG_IP_NOSR=y
CONFIG_SKB_LARGE=y
# CONFIG_IPV6 is not set
# CONFIG_IPX is not set
# CONFIG_ATALK is not set
# CONFIG_X25 is not set
# CONFIG_LAPB is not set
# CONFIG_BRIDGE is not set
# CONFIG_LLC is not set
# CONFIG_ECONET is not set
CONFIG_WAN_ROUTER=m
CONFIG_NET_FASTROUTE=y
# CONFIG_NET_HW_FLOWCONTROL is not set
# CONFIG_CPU_IS_SLOW is not set
# CONFIG_NET_SCHED is not set

#
# SCSI support
#
CONFIG_SCSI=y
CONFIG_BLK_DEV_SD=y
CONFIG_CHR_DEV_ST=m
CONFIG_BLK_DEV_SR=m
# CONFIG_BLK_DEV_SR_VENDOR is not set
CONFIG_CHR_DEV_SG=m
CONFIG_SCSI_MULTI_LUN=y
CONFIG_SCSI_CONSTANTS=y
CONFIG_SCSI_LOGGING=y

#
# SCSI low-level drivers
#
# CONFIG_SCSI_7000FASST is not set
# CONFIG_SCSI_AHA152X is not set
# CONFIG_SCSI_AHA1542 is not set
# CONFIG_SCSI_AHA1740 is not set
# CONFIG_SCSI_AIC7XXX is not set
# CONFIG_SCSI_ADVANSYS is not set
# CONFIG_SCSI_IN2000 is not set
# CONFIG_SCSI_AM53C974 is not set
# CONFIG_SCSI_BUSLOGIC is not set
# CONFIG_SCSI_DTC3280 is not set
# CONFIG_SCSI_EATA_DMA is not set
# CONFIG_SCSI_EATA_PIO is not set
# CONFIG_SCSI_EATA is not set
# CONFIG_SCSI_FUTURE_DOMAIN is not set
# CONFIG_SCSI_GDTH is not set
# CONFIG_SCSI_GENERIC_NCR5380 is not set
CONFIG_SCSI_PPA=m
# CONFIG_SCSI_PPA_HAVE_PEDANTIC is not set
CONFIG_SCSI_IMM=m
# CONFIG_SCSI_NCR53C406A is not set
# CONFIG_SCSI_NCR53C7xx is not set
CONFIG_SCSI_NCR53C8XX=y
CONFIG_SCSI_NCR53C8XX_DEFAULT_TAGS=8
CONFIG_SCSI_NCR53C8XX_MAX_TAGS=32
CONFIG_SCSI_NCR53C8XX_SYNC=20
# CONFIG_SCSI_NCR53C8XX_PROFILE is not set
# CONFIG_SCSI_NCR53C8XX_IOMAPPED is not set
CONFIG_SCSI_NCR53C8XX_SYMBIOS_COMPAT=y
# CONFIG_SCSI_PAS16 is not set
# CONFIG_SCSI_PCI2000 is not set
# CONFIG_SCSI_PCI2220I is not set
# CONFIG_SCSI_PSI240I is not set
# CONFIG_SCSI_QLOGIC_FAS is not set
# CONFIG_SCSI_QLOGIC_ISP is not set
# CONFIG_SCSI_SEAGATE is not set
# CONFIG_SCSI_DC390T is not set
# CONFIG_SCSI_T128 is not set
# CONFIG_SCSI_U14_34F is not set
# CONFIG_SCSI_ULTRASTOR is not set
# CONFIG_SCSI_DEBUG is not set

#
# Network device support
#
CONFIG_NETDEVICES=y
# CONFIG_ARCNET is not set
CONFIG_DUMMY=m
# CONFIG_EQUALIZER is not set
# CONFIG_ETHERTAP is not set
CONFIG_NET_ETHERNET=y
# CONFIG_NET_VENDOR_3COM is not set
# CONFIG_LANCE is not set
# CONFIG_NET_VENDOR_SMC is not set
# CONFIG_NET_VENDOR_RACAL is not set
# CONFIG_RTL8139 is not set
# CONFIG_YELLOWFIN is not set
# CONFIG_NET_ISA is not set
CONFIG_NET_EISA=y
# CONFIG_PCNET32 is not set
# CONFIG_AC3200 is not set
# CONFIG_APRICOT is not set
# CONFIG_CS89x0 is not set
# CONFIG_DE4X5 is not set
CONFIG_DEC_ELCP=m
# CONFIG_DGRS is not set
# CONFIG_EEXPRESS_PRO100 is not set
# CONFIG_LNE390 is not set
# CONFIG_NE3210 is not set
# CONFIG_NE2K_PCI is not set
# CONFIG_TLAN is not set
# CONFIG_VIA_RHINE is not set
# CONFIG_ES3210 is not set
# CONFIG_EPIC100 is not set
# CONFIG_ZNET is not set
# CONFIG_NET_POCKET is not set
# CONFIG_FDDI is not set
# CONFIG_HIPPI is not set
# CONFIG_DLCI is not set
CONFIG_PLIP=m
CONFIG_PPP=m
CONFIG_SLIP=m
# CONFIG_SLIP_COMPRESSED is not set
# CONFIG_SLIP_SMART is not set
# CONFIG_SLIP_MODE_SLIP6 is not set
CONFIG_NET_RADIO=y
# CONFIG_STRIP is not set
# CONFIG_WAVELAN is not set
# CONFIG_TR is not set
CONFIG_SHAPER=m
# CONFIG_HOSTESS_SV11 is not set
# CONFIG_WAN_DRIVERS is not set

#
# Amateur Radio support
#
# CONFIG_HAMRADIO is not set

#
# ISDN subsystem
#
# CONFIG_ISDN is not set

#
# CD-ROM drivers (not for SCSI or IDE/ATAPI drives)
#
# CONFIG_CD_NO_IDESCSI is not set

#
# Character devices
#
CONFIG_VT=y
CONFIG_VT_CONSOLE=y
CONFIG_SERIAL=m
# CONFIG_SERIAL_EXTENDED is not set
# CONFIG_SERIAL_NONSTANDARD is not set
CONFIG_UNIX98_PTYS=y
CONFIG_UNIX98_PTY_COUNT=1024
CONFIG_PRINTER=m
CONFIG_PRINTER_READBACK=y
CONFIG_MOUSE=y
# CONFIG_ATIXL_BUSMOUSE is not set
# CONFIG_BUSMOUSE is not set
# CONFIG_MS_BUSMOUSE is not set
# CONFIG_PSMOUSE is not set
# CONFIG_82C710_MOUSE is not set
# CONFIG_PC110_PAD is not set
# CONFIG_QIC02_TAPE is not set
# CONFIG_WATCHDOG is not set
CONFIG_RTC=y
# CONFIG_VIDEO_DEV is not set
CONFIG_NVRAM=m
# CONFIG_JOYSTICK is not set

#
# Ftape, the floppy tape device driver
#
# CONFIG_FTAPE is not set

#
# Filesystems
#
CONFIG_QUOTA=y
CONFIG_MINIX_FS=m
CONFIG_EXT2_FS=y
CONFIG_ISO9660_FS=m
CONFIG_JOLIET=y
CONFIG_FAT_FS=m
CONFIG_MSDOS_FS=m
CONFIG_UMSDOS_FS=m
CONFIG_VFAT_FS=m
CONFIG_PROC_FS=y
CONFIG_NFS_FS=y
CONFIG_NFSD=y
# CONFIG_NFSD_SUN is not set
CONFIG_SUNRPC=y
CONFIG_LOCKD=y
CONFIG_CODA_FS=m
CONFIG_SMB_FS=m
CONFIG_SMB_WIN95=y
# CONFIG_HPFS_FS is not set
# CONFIG_NTFS_FS is not set
CONFIG_SYSV_FS=m
# CONFIG_AFFS_FS is not set
# CONFIG_HFS_FS is not set
CONFIG_ROMFS_FS=m
CONFIG_AUTOFS_FS=m
CONFIG_UFS_FS=m
CONFIG_BSD_DISKLABEL=y
CONFIG_SMD_DISKLABEL=y
CONFIG_SOLARIS_X86_PARTITION=y
CONFIG_DEVPTS_FS=m
# CONFIG_ADFS_FS is not set
# CONFIG_QNX4FS_FS is not set
# CONFIG_MAC_PARTITION is not set
CONFIG_NLS=y

#
# Native Language Support
#
CONFIG_NLS_CODEPAGE_437=m
# CONFIG_NLS_CODEPAGE_737 is not set
# CONFIG_NLS_CODEPAGE_775 is not set
CONFIG_NLS_CODEPAGE_850=m
# 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_874 is not set
CONFIG_NLS_ISO8859_1=m
# CONFIG_NLS_ISO8859_2 is not set
# CONFIG_NLS_ISO8859_3 is not set
# CONFIG_NLS_ISO8859_4 is not set
# CONFIG_NLS_ISO8859_5 is not set
# CONFIG_NLS_ISO8859_6 is not set
# CONFIG_NLS_ISO8859_7 is not set
# CONFIG_NLS_ISO8859_8 is not set
# CONFIG_NLS_ISO8859_9 is not set
# CONFIG_NLS_KOI8_R is not set

#
# Console drivers
#
CONFIG_VGA_CONSOLE=y
CONFIG_VIDEO_SELECT=y
# CONFIG_MDA_CONSOLE is not set
# CONFIG_FB is not set

#
# Sound
#
CONFIG_SOUND=m
# CONFIG_SOUND_ES1370 is not set
# CONFIG_SOUND_ES1371 is not set
# CONFIG_SOUND_SONICVIBES is not set
# CONFIG_SOUND_MSNDCLAS is not set
# CONFIG_SOUND_MSNDPIN is not set
CONFIG_SOUND_OSS=m
# CONFIG_SOUND_PAS is not set
CONFIG_SOUND_SB=m
CONFIG_SOUND_ADLIB=m
# CONFIG_SOUND_GUS is not set
# CONFIG_SOUND_MPU401 is not set
# CONFIG_SOUND_PSS is not set
# CONFIG_SOUND_MSS is not set
# CONFIG_SOUND_SSCAPE is not set
# CONFIG_SOUND_TRIX is not set
# CONFIG_SOUND_MAD16 is not set
# CONFIG_SOUND_WAVEFRONT is not set
# CONFIG_SOUND_CS4232 is not set
# CONFIG_SOUND_OPL3SA2 is not set
# CONFIG_SOUND_MAUI is not set
# CONFIG_SOUND_SGALAXY is not set
# CONFIG_SOUND_OPL3SA1 is not set
# CONFIG_SOUND_SOFTOSS is not set
CONFIG_SOUND_YM3812=m
# CONFIG_SOUND_VMIDI is not set
# CONFIG_SOUND_UART6850 is not set

#
# Additional low level sound drivers
#
CONFIG_LOWLEVEL_SOUND=y
# CONFIG_ACI_MIXER is not set
CONFIG_AWE32_SYNTH=m
# CONFIG_AEDSP16 is not set

#
# Kernel hacking
#
CONFIG_MAGIC_SYSRQ=y

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