> On Mon, Feb 20, 2006 at 12:22:35PM +0100, Jan Kara wrote:
> > I have the following problem with UML in 2.6.16-rc4:
> > if I configure the kernel to use tracing thread support, then the kernel
> > stops just after mounting the root and then writing:
> >
> > line_ioctl: tty0: ioctl KDSIGACCEPT called
> >
> > If I set init to be e.g. /bin/bash and not /sbin/init, then I get the
> > prompt (but the kernel usually hangs shortly after I try to do
> > something). Everything worked fine in 2.6.15.
>
> TT mode is slowly bitrotting, and it seems to break even when it's
> configured, but not used. That code is going to be deleted, so I'm
> not too concerned about this.
OK, I thought it's something like that. Thanks for information.
> > So I tried to configure the UML kernel with SKAS mode. But I get the
> > message:
> >
> > Error while loading shared libraries: unexpected PLT reloc type 0x06
>
> How did you make the filesystem? Can you put it somewhere that I can
> look at it?
Actually I was not probably clear enough. In this case starting UML
fails even before it writes out anything (and as I checked the same
problem is with 2.6.15 kernel) - it actually fails during the
dynamic-linking phase (outputs of ldd and strace are attached). But
it does not seem as simple library version mismatch or something like
that as e.g. joe links against the same libraries and it seems to work
fine... BTW: my system is SUSE 9.3, kernel 2.6.15+skas3 patch, glibc
2.3.3. If you need any more information or experiment, feel free to ask.
Honza
PS: I also attached .config of my kernel.
linux-gate.so.1 => (0xffffe000)
libutil.so.1 => /lib/libutil.so.1 (0x40018000)
libc.so.6 => /lib/tls/libc.so.6 (0x4001d000)
/lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0x40000000)
execve("./linux", ["./linux"], [/* 61 vars */]) = 0
uname({sys="Linux", node="quack", ...}) = 0
brk(0) = 0x8152000
access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory)
open("/lib/tls/i686/libutil.so.1", O_RDONLY) = -1 ENOENT (No such file or
directory)
stat64("/lib/tls/i686", 0xbfaec340) = -1 ENOENT (No such file or directory)
open("/lib/tls/libutil.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/lib/tls", {st_mode=S_IFDIR|0755, st_size=216, ...}) = 0
open("/lib/i686/libutil.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/lib/i686", {st_mode=S_IFDIR|0755, st_size=144, ...}) = 0
open("/lib/libutil.so.1", O_RDONLY) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\240\f\0"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=12643, ...}) = 0
old_mmap(NULL, 12432, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) =
0x40018000
madvise(0x40018000, 12432, MADV_SEQUENTIAL|0x1) = 0
old_mmap(0x4001a000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1000) = 0x4001a000
close(3) = 0
open("/lib/tls/libc.so.6", O_RDONLY) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\0L\1\000"..., 512) =
512
fstat64(3, {st_mode=S_IFREG|0755, st_size=1359489, ...}) = 0
old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x4001c000
old_mmap(NULL, 1137708, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) =
0x4001d000
madvise(0x4001d000, 1137708, MADV_SEQUENTIAL|0x1) = 0
mprotect(0x4012c000, 27692, PROT_NONE) = 0
old_mmap(0x4012d000, 16384, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x10f000) = 0x4012d000
old_mmap(0x40131000, 7212, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x40131000
close(3) = 0
mprotect(0x4012d000, 4096, PROT_READ) = 0
writev(2, [{"./linux", 7}, {": ", 2}, {"error while loading shared libra"...,
36}, {": ", 2}, {"", 0}, {"", 0}, {"unexpected PLT reloc type 0x06", 30}, {"",
0}, {"", 0}, {"\n", 1}], 10./linux: error while loading shared libraries:
unexpected PLT reloc type 0x06
) = 78
exit_group(127) = ?
#
# Automatically generated make config: don't edit
# Linux kernel version: 2.6.15
# Thu Feb 23 23:34:31 2006
#
CONFIG_GENERIC_HARDIRQS=y
CONFIG_UML=y
CONFIG_MMU=y
CONFIG_UID16=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
CONFIG_IRQ_RELEASE_METHOD=y
#
# UML-specific options
#
# CONFIG_MODE_TT is not set
# CONFIG_STATIC_LINK is not set
CONFIG_MODE_SKAS=y
#
# Host processor type and features
#
# CONFIG_M386 is not set
# CONFIG_M486 is not set
# CONFIG_M586 is not set
# CONFIG_M586TSC is not set
# CONFIG_M586MMX is not set
# CONFIG_M686 is not set
# CONFIG_MPENTIUMII is not set
CONFIG_MPENTIUMIII=y
# CONFIG_MPENTIUMM is not set
# CONFIG_MPENTIUM4 is not set
# CONFIG_MK6 is not set
# CONFIG_MK7 is not set
# CONFIG_MK8 is not set
# CONFIG_MCRUSOE is not set
# CONFIG_MEFFICEON is not set
# CONFIG_MWINCHIPC6 is not set
# CONFIG_MWINCHIP2 is not set
# CONFIG_MWINCHIP3D is not set
# CONFIG_MGEODEGX1 is not set
# CONFIG_MCYRIXIII is not set
# CONFIG_MVIAC3_2 is not set
# CONFIG_X86_GENERIC is not set
CONFIG_X86_CMPXCHG=y
CONFIG_X86_XADD=y
CONFIG_X86_L1_CACHE_SHIFT=5
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_CMPXCHG64=y
CONFIG_X86_GOOD_APIC=y
CONFIG_X86_INTEL_USERCOPY=y
CONFIG_X86_USE_PPRO_CHECKSUM=y
CONFIG_X86_TSC=y
CONFIG_UML_X86=y
# CONFIG_64BIT is not set
CONFIG_SEMAPHORE_SLEEPERS=y
CONFIG_TOP_ADDR=0xc0000000
# CONFIG_3_LEVEL_PGTABLES is not set
CONFIG_STUB_CODE=0xbfffe000
CONFIG_STUB_DATA=0xbffff000
CONFIG_STUB_START=0xbfffe000
CONFIG_ARCH_HAS_SC_SIGNALS=y
CONFIG_ARCH_REUSE_HOST_VSYSCALL_AREA=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_SPLIT_PTLOCK_CPUS=4
CONFIG_LD_SCRIPT_DYN=y
# CONFIG_NET is not set
CONFIG_BINFMT_ELF=y
# CONFIG_BINFMT_MISC is not set
# CONFIG_HOSTFS is not set
# CONFIG_HPPFS is not set
CONFIG_MCONSOLE=y
CONFIG_MAGIC_SYSRQ=y
CONFIG_NEST_LEVEL=0
# CONFIG_HIGHMEM is not set
CONFIG_KERNEL_STACK_ORDER=2
CONFIG_UML_REAL_TIME_CLOCK=y
#
# Code maturity level options
#
CONFIG_EXPERIMENTAL=y
CONFIG_CLEAN_COMPILE=y
CONFIG_BROKEN_ON_SMP=y
CONFIG_INIT_ENV_ARG_LIMIT=32
#
# General setup
#
CONFIG_LOCALVERSION=""
CONFIG_LOCALVERSION_AUTO=y
# CONFIG_SWAP is not set
CONFIG_SYSVIPC=y
# CONFIG_BSD_PROCESS_ACCT is not set
CONFIG_SYSCTL=y
# CONFIG_HOTPLUG is not set
# CONFIG_IKCONFIG is not set
CONFIG_INITRAMFS_SOURCE=""
CONFIG_CC_OPTIMIZE_FOR_SIZE=y
# CONFIG_EMBEDDED is not set
CONFIG_KALLSYMS=y
# CONFIG_KALLSYMS_ALL is not set
CONFIG_KALLSYMS_EXTRA_PASS=y
CONFIG_PRINTK=y
CONFIG_BUG=y
CONFIG_BASE_FULL=y
CONFIG_FUTEX=y
CONFIG_EPOLL=y
CONFIG_SHMEM=y
CONFIG_CC_ALIGN_FUNCTIONS=0
CONFIG_CC_ALIGN_LABELS=0
CONFIG_CC_ALIGN_LOOPS=0
CONFIG_CC_ALIGN_JUMPS=0
# CONFIG_TINY_SHMEM is not set
CONFIG_BASE_SMALL=0
#
# Loadable module support
#
# CONFIG_MODULES is not set
#
# Block layer
#
# CONFIG_LBD is not set
#
# IO Schedulers
#
CONFIG_IOSCHED_NOOP=y
CONFIG_IOSCHED_AS=y
CONFIG_IOSCHED_DEADLINE=y
CONFIG_IOSCHED_CFQ=y
CONFIG_DEFAULT_AS=y
# CONFIG_DEFAULT_DEADLINE is not set
# CONFIG_DEFAULT_CFQ is not set
# CONFIG_DEFAULT_NOOP is not set
CONFIG_DEFAULT_IOSCHED="anticipatory"
#
# Networking
#
#
# Generic Driver Options
#
CONFIG_STANDALONE=y
CONFIG_PREVENT_FIRMWARE_BUILD=y
# CONFIG_FW_LOADER is not set
# CONFIG_DEBUG_DRIVER is not set
#
# Character Devices
#
CONFIG_STDERR_CONSOLE=y
CONFIG_STDIO_CONSOLE=y
# CONFIG_SSL is not set
CONFIG_NULL_CHAN=y
# CONFIG_PORT_CHAN is not set
# CONFIG_PTY_CHAN is not set
CONFIG_TTY_CHAN=y
CONFIG_XTERM_CHAN=y
CONFIG_NOCONFIG_CHAN=y
CONFIG_CON_ZERO_CHAN="fd:0,fd:1"
CONFIG_CON_CHAN="xterm"
CONFIG_SSL_CHAN="pty"
CONFIG_UNIX98_PTYS=y
# CONFIG_LEGACY_PTYS is not set
# CONFIG_WATCHDOG is not set
# CONFIG_UML_SOUND is not set
# CONFIG_SOUND is not set
# CONFIG_HOSTAUDIO is not set
# CONFIG_UML_RANDOM is not set
# CONFIG_MMAPPER is not set
#
# Block devices
#
CONFIG_BLK_DEV_UBD=y
# CONFIG_BLK_DEV_UBD_SYNC is not set
CONFIG_BLK_DEV_COW_COMMON=y
# CONFIG_BLK_DEV_LOOP is not set
# CONFIG_BLK_DEV_RAM is not set
CONFIG_BLK_DEV_RAM_COUNT=16
# CONFIG_NETDEVICES is not set
#
# Network device support
#
# CONFIG_NETPOLL is not set
# CONFIG_NET_POLL_CONTROLLER is not set
#
# Connector - unified userspace <-> kernelspace linker
#
#
# File systems
#
# CONFIG_EXT2_FS is not set
CONFIG_EXT3_FS=y
# CONFIG_EXT3_FS_XATTR is not set
CONFIG_JBD=y
# CONFIG_JBD_DEBUG is not set
# CONFIG_REISERFS_FS is not set
# CONFIG_JFS_FS is not set
# CONFIG_FS_POSIX_ACL is not set
# CONFIG_XFS_FS is not set
# CONFIG_MINIX_FS is not set
# CONFIG_ROMFS_FS is not set
# CONFIG_INOTIFY is not set
# 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 is not set
# CONFIG_UDF_FS is not set
#
# DOS/FAT/NT Filesystems
#
# CONFIG_MSDOS_FS is not set
# CONFIG_VFAT_FS is not set
# CONFIG_NTFS_FS is not set
#
# Pseudo filesystems
#
CONFIG_PROC_FS=y
CONFIG_PROC_KCORE=y
CONFIG_SYSFS=y
CONFIG_TMPFS=y
# CONFIG_HUGETLB_PAGE is not set
CONFIG_RAMFS=y
# CONFIG_RELAYFS_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
#
# Partition Types
#
# CONFIG_PARTITION_ADVANCED is not set
CONFIG_MSDOS_PARTITION=y
#
# Native Language Support
#
# CONFIG_NLS is not set
#
# Security options
#
# CONFIG_KEYS is not set
# CONFIG_SECURITY is not set
#
# Cryptographic options
#
# CONFIG_CRYPTO is not set
#
# Hardware crypto devices
#
#
# Library routines
#
# CONFIG_CRC_CCITT is not set
# CONFIG_CRC16 is not set
# CONFIG_CRC32 is not set
# CONFIG_LIBCRC32C is not set
#
# Multi-device support (RAID and LVM)
#
# CONFIG_MD is not set
# CONFIG_INPUT is not set
#
# Kernel hacking
#
# CONFIG_PRINTK_TIME is not set
CONFIG_DEBUG_KERNEL=y
CONFIG_LOG_BUF_SHIFT=14
CONFIG_DETECT_SOFTLOCKUP=y
# CONFIG_SCHEDSTATS is not set
CONFIG_DEBUG_SLAB=y
CONFIG_DEBUG_SPINLOCK=y
CONFIG_DEBUG_SPINLOCK_SLEEP=y
# CONFIG_DEBUG_KOBJECT is not set
CONFIG_DEBUG_INFO=y
CONFIG_DEBUG_FS=y
CONFIG_DEBUG_VM=y
CONFIG_FRAME_POINTER=y
# CONFIG_RCU_TORTURE_TEST is not set
# CONFIG_GPROF is not set
# CONFIG_GCOV is not set
# CONFIG_SYSCALL_DEBUG is not set
