Messages in this thread | | | Date | Tue, 27 Jan 1998 17:49:10 -0800 (PST) | From | Trevor Johnson <> | Subject | Re: 2.1.82 & reproducible strange name module loading requests |
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Gabriel Paubert:
> > Code: cf 8d 76 00 f7 44 24 30 00 00 02 00 54 75 19 6a 00 e8 56 fc > ^^ > iret opcode, recently there have been a few oopses on iret's to user mode > > > Stack: 400c485e 00000023 00000286 bffff690 00000000 > %eip %cs %eflags %esp %ss > (ok) (ok) (ok) (ok) (bad) > > > something has corrupted the kernel stack during a system call. An strace > would be a great help in this case.
I found that the GPF only happens when I run sshd from inetd. When I run it standalone, there is no problem. Here is the line from my inetd.conf:
ssh stream tcp nowait root /usr/sbin/tcpd /usr/sbin/sshd -i
Here is an strace of the sshd process from the time I press ^D to log out:
# strace -p 203 select(10, [5 9], [], NULL, NULL) = 1 (in [5]) time(NULL) = 885951253 read(5, "\0\0\0\n9H\216\346\370\244\227\n"..., 16384) = 20 select(10, [5 9], [8], NULL, NULL) = 1 (out [8]) time(NULL) = 885951253 write(8, "\4", 1) = 1 select(10, [5 9], [], NULL, NULL) = 1 (in [9]) time(NULL) = 885951253 read(9, "^D\10\10", 16384) = 4 select(10, [5 9], [], NULL, {0, 17000}) = 1 (in [9], left {0, 20000}) time(NULL) = 885951253 read(9, "logout\r\n", 16384) = 8 select(10, [5 9], [], NULL, {0, 17000}) = 1 (in [9], left {0, 0}) time(NULL) = 885951253 read(9, "\33[H\33[J", 16384) = 6 select(10, [5 9], [], NULL, {0, 17000}) = 1 (in [9], left {0, 20000}) --- SIGCHLD (Child exited) --- wait4(-1, [WIFEXITED(s) && WEXITSTATUS(s) == 0], 0, NULL) = 205 sigaction(SIGCHLD, {0x8051ce0, [], SA_STACK|SA_RESTART|SA_INTERRUPT|SA_ONESHOT|0x7fff530}, {0x8051ce0, [], 0}) = 0 sigreturn() = ? (mask now []) +++ killed by SIGSEGV +++
I have sshd 1.2.20 and an inetd which contains:
@(#) Copyright (c) 1983 Regents of the University of California. All rights reserved. $Id: inetd.c,v 1.13 1997/06/08 19:42:34 dholland Exp $ netkit-base-0.10 $Id: daemon.c,v 1.3 1996/08/14 23:54:14 dholland Exp $
Both are linked with GNU libc 2.0.5.
Here is the configuration for my kernel:
CONFIG_EXPERIMENTAL=y # 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_MODULES=y # CONFIG_MODVERSIONS is not set CONFIG_KERNELD=y CONFIG_NET=y CONFIG_PCI=y CONFIG_PCI_BIOS=y CONFIG_PCI_DIRECT=y CONFIG_PCI_OPTIMIZE=y CONFIG_PCI_OLD_PROC=y # CONFIG_MCA is not set CONFIG_SYSVIPC=y # CONFIG_BSD_PROCESS_ACCT is not set CONFIG_SYSCTL=y # CONFIG_BINFMT_AOUT is not set CONFIG_BINFMT_ELF=y CONFIG_BINFMT_MISC=m # CONFIG_BINFMT_JAVA is not set CONFIG_VIDEO_SELECT=y CONFIG_PARPORT=m CONFIG_PARPORT_PC=m # CONFIG_PARPORT_OTHER is not set # CONFIG_PNP is not set 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 is not set # 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_OPTI621=y # CONFIG_BLK_DEV_TRM290 is not set # CONFIG_BLK_DEV_NS87415 is not set # CONFIG_IDE_CHIPSETS is not set CONFIG_BLK_DEV_LOOP=m # CONFIG_BLK_DEV_MD is not set # CONFIG_BLK_DEV_RAM is not set # CONFIG_BLK_DEV_XD is not set CONFIG_PARIDE_PARPORT=m # CONFIG_PARIDE is not set # CONFIG_BLK_DEV_HD is not set CONFIG_PACKET=m # CONFIG_NETLINK is not set CONFIG_FIREWALL=y # CONFIG_NET_ALIAS is not set # CONFIG_FILTER is not set CONFIG_UNIX=y CONFIG_INET=y # CONFIG_IP_MULTICAST is not set # CONFIG_IP_ADVANCED_ROUTER is not set # CONFIG_IP_PNP is not set CONFIG_IP_FIREWALL=y # CONFIG_IP_FIREWALL_VERBOSE is not set CONFIG_IP_TRANSPARENT_PROXY=y CONFIG_IP_ALWAYS_DEFRAG=y # CONFIG_IP_ACCT is not set CONFIG_IP_MASQUERADE=y # CONFIG_IP_MASQUERADE_ICMP is not set CONFIG_IP_MASQUERADE_IPAUTOFW=m # CONFIG_IP_MASQUERADE_IPPORTFW is not set # CONFIG_IP_ROUTER is not set # CONFIG_NET_IPIP is not set # CONFIG_NET_IPGRE is not set # CONFIG_IP_ALIAS is not set # CONFIG_SYN_COOKIES is not set # CONFIG_INET_RARP is not set 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_WAN_ROUTER is not set # CONFIG_NET_FASTROUTE is not set # CONFIG_NET_HW_FLOWCONTROL is not set # CONFIG_CPU_IS_SLOW is not set # CONFIG_NET_SCHED is not set # CONFIG_NET_PROFILE is not set CONFIG_SCSI=y CONFIG_BLK_DEV_SD=m 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 is not set CONFIG_SCSI_CONSTANTS=y CONFIG_SCSI_LOGGING=y # CONFIG_SCSI_7000FASST is not set # CONFIG_SCSI_AHA152X is not set CONFIG_SCSI_AHA1542=m # 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_NCR53C406A is not set # CONFIG_SCSI_NCR53C7xx is not set # CONFIG_SCSI_NCR53C8XX is not set # CONFIG_SCSI_PPA is not set # 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_NETDEVICES=y # CONFIG_ARCNET is not set # CONFIG_DUMMY is not set # CONFIG_EQUALIZER 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_NET_ISA=y # CONFIG_AT1700 is not set # CONFIG_E2100 is not set # CONFIG_DEPCA is not set # CONFIG_EWRK3 is not set # CONFIG_EEXPRESS is not set # CONFIG_EEXPRESS_PRO is not set # CONFIG_FMV18X is not set # CONFIG_HPLAN_PLUS is not set # CONFIG_HPLAN is not set # CONFIG_HP100 is not set # CONFIG_ETH16I is not set CONFIG_NE2000=y # CONFIG_SEEQ8005 is not set # CONFIG_SK_G16 is not set # CONFIG_NET_EISA is not set # CONFIG_NET_POCKET is not set # CONFIG_FDDI is not set # CONFIG_DLCI is not set # CONFIG_PLIP is not set CONFIG_PPP=y # CONFIG_SLIP is not set # CONFIG_NET_RADIO is not set # CONFIG_TR is not set # CONFIG_SHAPER is not set # CONFIG_HAMRADIO is not set # CONFIG_ISDN is not set # CONFIG_CD_NO_IDESCSI is not set CONFIG_CDROM=m # CONFIG_QUOTA is not set CONFIG_MINIX_FS=m CONFIG_EXT2_FS=y CONFIG_ISO9660_FS=m CONFIG_FAT_FS=y CONFIG_MSDOS_FS=y # CONFIG_UMSDOS_FS is not set CONFIG_VFAT_FS=y CONFIG_PROC_FS=y CONFIG_NFS_FS=m CONFIG_NFSD=m CONFIG_SUNRPC=m CONFIG_LOCKD=m 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 is not set # CONFIG_AFFS_FS is not set CONFIG_HFS_FS=m # CONFIG_ROMFS_FS is not set CONFIG_AUTOFS_FS=m CONFIG_UFS_FS=m CONFIG_BSD_DISKLABEL=y # CONFIG_SMD_DISKLABEL is not set # CONFIG_SOLARIS_X86_PARTITION is not set CONFIG_ADFS_FS=m CONFIG_MAC_PARTITION=y CONFIG_NLS=y # CONFIG_NLS_CODEPAGE_437 is not set # CONFIG_NLS_CODEPAGE_737 is not set # CONFIG_NLS_CODEPAGE_775 is not set # CONFIG_NLS_CODEPAGE_850 is not set # CONFIG_NLS_CODEPAGE_852 is not set # CONFIG_NLS_CODEPAGE_855 is not set # CONFIG_NLS_CODEPAGE_857 is not set # CONFIG_NLS_CODEPAGE_860 is not set # CONFIG_NLS_CODEPAGE_861 is not set # CONFIG_NLS_CODEPAGE_862 is not set # CONFIG_NLS_CODEPAGE_863 is not set # CONFIG_NLS_CODEPAGE_864 is not set # CONFIG_NLS_CODEPAGE_865 is not set # CONFIG_NLS_CODEPAGE_866 is not set # CONFIG_NLS_CODEPAGE_869 is not set # CONFIG_NLS_CODEPAGE_874 is not set # CONFIG_NLS_ISO8859_1 is not set # 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 CONFIG_VT=y CONFIG_VT_CONSOLE=y CONFIG_SERIAL=y # CONFIG_SERIAL_CONSOLE is not set # CONFIG_SERIAL_EXTENDED is not set # CONFIG_SERIAL_NONSTANDARD is not set CONFIG_PRINTER=m CONFIG_PRINTER_READBACK=y # CONFIG_MOUSE is not set # CONFIG_UMISC is not set # CONFIG_QIC02_TAPE is not set # CONFIG_APM is not set # CONFIG_WATCHDOG is not set # CONFIG_RTC is not set # CONFIG_VIDEO_DEV is not set # CONFIG_NVRAM is not set # CONFIG_JOYSTICK is not set # CONFIG_MISC_RADIO is not set # CONFIG_FTAPE is not set CONFIG_SOUND=m # CONFIG_PAS is not set CONFIG_SB=m # CONFIG_ADLIB is not set # CONFIG_GUS is not set # CONFIG_MPU401 is not set # CONFIG_PSS is not set # CONFIG_MSS is not set # CONFIG_SSCAPE is not set # CONFIG_TRIX is not set # CONFIG_MAD16 is not set # CONFIG_CS4232 is not set # CONFIG_MAUI is not set # CONFIG_OPL3SA1 is not set # CONFIG_SOFTOSS is not set # CONFIG_YM3812 is not set # CONFIG_VMIDI is not set CONFIG_LOWLEVEL_SOUND=y # CONFIG_ACI_MIXER is not set CONFIG_AWE32_SYNTH=m # CONFIG_AEDSP16 is not set # CONFIG_PROFILE is not set # CONFIG_MAGIC_SYSRQ is not set CONFIG_VGA_CONSOLE=y ___ Trevor Johnson
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