Very Computer

> Any insights and/or suggestions would be appreciated.  Thanx!

> I saw it starting with 2.5.70-bk15.  It looks like it did not have this
> problem in 2.5.70-bk14.  Does this seem to be the case with you as
> well?  I have not yet had time to hunt down more than is in that bug
> report.

> Any insights and/or suggestions would be appreciated.  Thanx!
> ksymoops 2.4.8 on i686 2.4.21.  Options used
>      -v ./vmlinux (specified)
>      -K (specified)
>      -L (specified)
>      -o /lib/modules/2.5.72 (specified)
>      -m /boot/System.map-2.5.72 (specified)

> No modules in ksyms, skipping objects
> Unable to handle kernel paging request at virtual address bfffefec
> 0807823f
> *pde = 3fef3067
> Oops: 0007 [#4]
> CPU:    0
> EIP:    0073:[<0807823f>]    Not tainted
> Using defaults from ksymoops -t elf32-i386 -a i386
> EFLAGS: 00010207
> eax: 0000007b  ebx: 40166f60  ecx: 080fd208  edx: 080fd208
> esi: 400098b8  edi: bffff564  ebp: bffff0f8  esp: bfffefe0
> ds: 007b  es: 007b  ss: 007b
> Call Trace: [<c011a8de>] [<c0109c5a>] [<c0107089>] [<c0107089>] [<c0107143>] [<c0105000>] [<c02e0842>] [<c02e0432>]
> Warning (Oops_read): Code line not seen, dumping what data is available

> >>EIP; 0807823f <__crc_proc_ide_write_settings+6ccbab/917b7f>   <=====

> >>ebx; 40166f60 <__crc_param_set_short+120617/3a4b20>
> >>ecx; 080fd208 <__crc_proc_ide_write_settings+751b74/917b7f>
> >>edx; 080fd208 <__crc_proc_ide_write_settings+751b74/917b7f>
> >>esi; 400098b8 <__crc_usb_buffer_dmasync+5a6022/5e30b3>
> >>edi; bffff564 <__crc_posix_test_lock+96de13/9aaee6>
> >>ebp; bffff0f8 <__crc_posix_test_lock+96d9a7/9aaee6>
> >>esp; bfffefe0 <__crc_posix_test_lock+96d88f/9aaee6>

> Trace; c011a8de <schedule+542/547>
> Trace; c0109c5a <reschedule_interrupt+1a/20>
> Trace; c0107089 <default_idle+0/31>
> Trace; c0107089 <default_idle+0/31>
> Trace; c0107143 <cpu_idle+51/53>
> Trace; c0105000 <_stext+0/0>
> Trace; c02e0842 <start_kernel+16d/185>
> Trace; c02e0432 <unknown_bootoption+0/f8>

> 1 warning issued.  Results may not be reliable.
> #
> # Automatically generated make config: don't edit
> #
> CONFIG_X86=y
> CONFIG_MMU=y
> CONFIG_UID16=y
> CONFIG_GENERIC_ISA_DMA=y

> #
> # Code maturity level options
> #
> CONFIG_EXPERIMENTAL=y

> #
> # General setup
> #
> CONFIG_SWAP=y
> CONFIG_SYSVIPC=y
> CONFIG_BSD_PROCESS_ACCT=y
> CONFIG_SYSCTL=y
> CONFIG_LOG_BUF_SHIFT=15
> # CONFIG_EMBEDDED is not set
> CONFIG_FUTEX=y
> CONFIG_EPOLL=y

> #
> # Loadable module support
> #
> CONFIG_MODULES=y
> CONFIG_MODULE_UNLOAD=y
> # CONFIG_MODULE_FORCE_UNLOAD is not set
> CONFIG_OBSOLETE_MODPARM=y
> CONFIG_MODVERSIONS=y
> CONFIG_KMOD=y

> #
> # Processor type and features
> #
> CONFIG_X86_PC=y
> # CONFIG_X86_VOYAGER is not set
> # CONFIG_X86_NUMAQ is not set
> # CONFIG_X86_SUMMIT is not set
> # CONFIG_X86_BIGSMP is not set
> # CONFIG_X86_VISWS is not set
> # CONFIG_X86_GENERICARCH is not set
> # CONFIG_X86_ES7000 is not set
> # 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 is not set
> CONFIG_MPENTIUM4=y
> # CONFIG_MK6 is not set
> # CONFIG_MK7 is not set
> # CONFIG_MK8 is not set
> # CONFIG_MELAN is not set
> # CONFIG_MCRUSOE is not set
> # CONFIG_MWINCHIPC6 is not set
> # CONFIG_MWINCHIP2 is not set
> # CONFIG_MWINCHIP3D 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=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_HUGETLB_PAGE=y
> CONFIG_SMP=y
> CONFIG_NR_CPUS=2
> CONFIG_PREEMPT=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_TOSHIBA is not set
> # CONFIG_I8K is not set
> CONFIG_MICROCODE=m
> CONFIG_X86_MSR=m
> CONFIG_X86_CPUID=m
> # CONFIG_EDD is not set
> # CONFIG_NOHIGHMEM is not set
> CONFIG_HIGHMEM4G=y
> # CONFIG_HIGHMEM64G is not set
> CONFIG_HIGHMEM=y
> CONFIG_HIGHPTE=y
> # CONFIG_MATH_EMULATION is not set
> CONFIG_MTRR=y
> CONFIG_HAVE_DEC_LOCK=y

> #
> # Power management options (ACPI, APM)
> #
> # CONFIG_PM is not set

> #
> # ACPI Support
> #
> CONFIG_ACPI=y
> CONFIG_ACPI_HT_ONLY=y
> CONFIG_ACPI_BOOT=y

> #
> # CPU Frequency scaling
> #
> # CONFIG_CPU_FREQ is not set

> #
> # Bus options (PCI, PCMCIA, EISA, MCA, ISA)
> #
> CONFIG_PCI=y
> # CONFIG_PCI_GOBIOS is not set
> # CONFIG_PCI_GODIRECT is not set
> CONFIG_PCI_GOANY=y
> CONFIG_PCI_BIOS=y
> CONFIG_PCI_DIRECT=y
> CONFIG_PCI_LEGACY_PROC=y
> CONFIG_PCI_NAMES=y
> # CONFIG_ISA is not set
> # CONFIG_MCA is not set
> # CONFIG_SCx200 is not set
> CONFIG_HOTPLUG=y

> #
> # PCMCIA/CardBus support
> #
> # CONFIG_PCMCIA is not set

> #
> # PCI Hotplug Support
> #
> # CONFIG_HOTPLUG_PCI is not set

> #
> # Executable file formats
> #
> CONFIG_KCORE_ELF=y
> # CONFIG_KCORE_AOUT is not set
> CONFIG_BINFMT_AOUT=m
> CONFIG_BINFMT_ELF=y
> CONFIG_BINFMT_MISC=m

> #
> # Memory Technology Devices (MTD)
> #
> # CONFIG_MTD is not set

> #
> # Parallel port support
> #
> CONFIG_PARPORT=m
> CONFIG_PARPORT_PC=m
> CONFIG_PARPORT_PC_CML1=m
> # CONFIG_PARPORT_SERIAL is not set
> CONFIG_PARPORT_PC_FIFO=y
> # CONFIG_PARPORT_PC_SUPERIO is not set
> # CONFIG_PARPORT_OTHER is not set
> CONFIG_PARPORT_1284=y

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

> #
> # Block devices
> #
> CONFIG_BLK_DEV_FD=m
> # CONFIG_PARIDE 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_LOOP=m
> # CONFIG_BLK_DEV_NBD is not set
> CONFIG_BLK_DEV_RAM=m
> CONFIG_BLK_DEV_RAM_SIZE=4096
> # CONFIG_BLK_DEV_INITRD is not set
> # CONFIG_LBD is not set

> #
> # ATA/ATAPI/MFM/RLL support
> #
> CONFIG_IDE=y

> #
> # IDE, ATA and ATAPI Block devices
> #
> CONFIG_BLK_DEV_IDE=y

> #
> # Please see Documentation/ide.txt for help/info on IDE drives
> #
> # CONFIG_BLK_DEV_HD_IDE is not set
> # CONFIG_BLK_DEV_HD is not set
> CONFIG_BLK_DEV_IDEDISK=y
> # CONFIG_IDEDISK_MULTI_MODE is not set
> # CONFIG_IDEDISK_STROKE is not set
> CONFIG_BLK_DEV_IDECD=m
> # CONFIG_BLK_DEV_IDEFLOPPY is not set
> CONFIG_BLK_DEV_IDESCSI=m
> # CONFIG_IDE_TASK_IOCTL is not set
> CONFIG_IDE_TASKFILE_IO=y

> #
> # IDE chipset support/bugfixes
> #
> # CONFIG_BLK_DEV_CMD640 is not set
> CONFIG_BLK_DEV_IDEPCI=y
> CONFIG_BLK_DEV_GENERIC=y
> CONFIG_IDEPCI_SHARE_IRQ=y
> CONFIG_BLK_DEV_IDEDMA_PCI=y
> # CONFIG_BLK_DEV_IDE_TCQ is not set
> # CONFIG_BLK_DEV_OFFBOARD is not set
> # CONFIG_BLK_DEV_IDEDMA_FORCED is not set
> CONFIG_IDEDMA_PCI_AUTO=y
> # CONFIG_IDEDMA_ONLYDISK is not set
> CONFIG_BLK_DEV_IDEDMA=y
> # CONFIG_IDEDMA_PCI_WIP is not set
> CONFIG_BLK_DEV_ADMA=y
> # CONFIG_BLK_DEV_AEC62XX is not set
> # CONFIG_BLK_DEV_ALI15X3 is not set
> # CONFIG_BLK_DEV_AMD74XX is not set
> # CONFIG_BLK_DEV_CMD64X is not set
> # CONFIG_BLK_DEV_TRIFLEX is not set
> # CONFIG_BLK_DEV_CY82C693 is not set
> # CONFIG_BLK_DEV_CS5520 is not set
> # CONFIG_BLK_DEV_HPT34X is not set
> # CONFIG_BLK_DEV_HPT366 is not set
> # CONFIG_BLK_DEV_SC1200 is not set
> # CONFIG_BLK_DEV_PIIX is not set
> # CONFIG_BLK_DEV_NS87415 is not set
> # CONFIG_BLK_DEV_OPTI621 is not set
> # CONFIG_BLK_DEV_PDC202XX_OLD is not set
> # CONFIG_BLK_DEV_PDC202XX_NEW is not set
> # CONFIG_BLK_DEV_RZ1000 is not set
> # CONFIG_BLK_DEV_SVWKS is not set
> # CONFIG_BLK_DEV_SIIMAGE is not set
> # CONFIG_BLK_DEV_SIS5513 is not set
> # CONFIG_BLK_DEV_SLC90E66 is not set
> # CONFIG_BLK_DEV_TRM290 is not set
> # CONFIG_BLK_DEV_VIA82CXXX is not set
> CONFIG_IDEDMA_AUTO=y
> # CONFIG_IDEDMA_IVB is not set

> #
> # SCSI device support
> #
> CONFIG_SCSI=m

> #
> # SCSI support type (disk, tape, CD-ROM)
> #
> # CONFIG_BLK_DEV_SD is not set
> # CONFIG_CHR_DEV_ST is not set
> # CONFIG_CHR_DEV_OSST is not set
> CONFIG_BLK_DEV_SR=m
> # CONFIG_BLK_DEV_SR_VENDOR is not set
> CONFIG_CHR_DEV_SG=m

> #
> # Some SCSI devices (e.g. CD jukebox) support multiple LUNs
> #
> # CONFIG_SCSI_MULTI_LUN is not set
> CONFIG_SCSI_REPORT_LUNS=y
> # CONFIG_SCSI_CONSTANTS is not set
> # CONFIG_SCSI_LOGGING is not set

> #
> # SCSI low-level drivers
> #
> # CONFIG_BLK_DEV_3W_XXXX_RAID is not set
> # CONFIG_SCSI_ACARD is not set
> # CONFIG_SCSI_AACRAID is not set
> # CONFIG_SCSI_AIC7XXX is not set
> # CONFIG_SCSI_AIC7XXX_OLD is not set
> # CONFIG_SCSI_AIC79XX is not set
> # CONFIG_SCSI_DPT_I2O is not set
> # CONFIG_SCSI_ADVANSYS is not set
> # CONFIG_SCSI_IN2000 is not set
> # CONFIG_SCSI_AM53C974 is not set
> # CONFIG_SCSI_MEGARAID is not set
> # CONFIG_SCSI_BUSLOGIC is not set
> # CONFIG_SCSI_CPQFCTS is not set
> # CONFIG_SCSI_DMX3191D is not set
> # CONFIG_SCSI_EATA is not set
> # CONFIG_SCSI_EATA_PIO 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_GENERIC_NCR5380_MMIO is not set
> # CONFIG_SCSI_IPS is not set
> # CONFIG_SCSI_INITIO is not set
> # CONFIG_SCSI_INIA100 is not set
> # CONFIG_SCSI_PPA is not set
> # CONFIG_SCSI_IMM is not set
> # CONFIG_SCSI_NCR53C7xx is not set
> # CONFIG_SCSI_SYM53C8XX_2 is not set
> # CONFIG_SCSI_NCR53C8XX is not set
> # CONFIG_SCSI_SYM53C8XX is not set
> # CONFIG_SCSI_PCI2000 is not set
> # CONFIG_SCSI_PCI2220I is not set
> # CONFIG_SCSI_QLOGIC_ISP is not set
> # CONFIG_SCSI_QLOGIC_FC is not set
> # CONFIG_SCSI_QLOGIC_1280 is not set
> # CONFIG_SCSI_DC395x is not set
> # CONFIG_SCSI_DC390T is not set
> # CONFIG_SCSI_U14_34F is not set
> # CONFIG_SCSI_NSP32 is not set
> #

> I just re-tested with 2.5.72-bk1, which still experiences the problem.
>  I enabled all of the debugging options this time, however, and so
>  captured what I hope to be a more informative oops.  The .config was
>  otherwise unchanged.

>  Let me know if I can provide any additional information.

> I'm getting the following oops when booting 2.5.72, preceded by a
>  quite a few "bad: scheduling while atomic!" messages.  My .config and
>  the decoded oops are attached.

> > I'm getting the following oops when booting 2.5.72, preceded by a
> >  quite a few "bad: scheduling while atomic!" messages.  My .config and
> >  the decoded oops are attached.

> I was able to reproduce this.  Pid #0 (swapper) ends up with a preempt
> count of two and everything goes pear-shaped.

> This appears to be because you haven't selected any chip drivers in IDE
> config.  I selected PIIX and things started working better.

> Just to double-check I took my usual .config, enable preemption, disabled
> all IDE chip drivers and the same thing happened.  Over to Bart ;)

> Your .config seems broken in other ways btw.  Suggest you do

>    cp arch/i386/defconfig .config

> and start again.