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SubjectRe: Linux 2.4.21pre3-ac2
From

This oops came up running dbench 32 on AMD K6/2.
dbench 32 runs okay on 2.4.21-pre3 on same hardware.

Error (regular_file): read_ksyms stat /proc/ksyms failed
No modules in ksyms, skipping objects
No ksyms, skipping lsmod
Unable to handle kernel NULL pointer dereference at virtual address 00000004
c0129c6b
*pde = 00000000
Oops: 0002
CPU: 0
EIP: 0010:[<c0129c6b>] Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010246
eax: 00000000 ebx: c13d1acc ecx: d6ef2000 edx: d6ef205c
esi: c13d1acc edi: 00000000 ebp: 00003759 esp: d6ef3e50
ds: 0018 es: 0018 ss: 0018
Process dbench (pid: 713, stackpage=d6ef3000)
Stack: c0132f3e 00000000 d71d0924 001f8713 00000000 00000000 c13d1acc c13d1acc
c13d1acc 00000020 00003759 c012930c 00000000 d6ef2000 00000200 000001d2
c0257270 00001602 001f8714 c1549ae0 00000000 00000020 000001d2 00000006
Call Trace: [<c0132f3e>] [<c012930c>] [<c0129486>] [<c01294ec>] [<c0129f44>]
[<c012a1fb>] [<c012550e>] [<c012f2e8>] [<c012f05e>] [<c0106db3>]
Code: 89 58 04 89 03 89 53 04 89 59 5c 89 7b 0c ff 41 68 83 c4 1c

>>EIP; c0129c6b <__free_pages_ok+26b/290> <=====
Trace; c0132f3e <try_to_free_buffers+9e/f0>
Trace; c012930c <shrink_cache+32c/350>
Trace; c0129486 <shrink_caches+56/80>
Trace; c01294ec <try_to_free_pages_zone+3c/60>
Trace; c0129f44 <balance_classzone+54/1f0>
Trace; c012a1fb <__alloc_pages+11b/180>
Trace; c012550e <generic_file_write+47e/7a0>
Trace; c012f2e8 <sys_write+98/100>
Trace; c012f05e <sys_lseek+6e/80>
Trace; c0106db3 <system_call+33/40>
Code; c0129c6b <__free_pages_ok+26b/290>
00000000 <_EIP>:
Code; c0129c6b <__free_pages_ok+26b/290> <=====
0: 89 58 04 mov %ebx,0x4(%eax) <=====
Code; c0129c6e <__free_pages_ok+26e/290>
3: 89 03 mov %eax,(%ebx)
Code; c0129c70 <__free_pages_ok+270/290>
5: 89 53 04 mov %edx,0x4(%ebx)
Code; c0129c73 <__free_pages_ok+273/290>
8: 89 59 5c mov %ebx,0x5c(%ecx)
Code; c0129c76 <__free_pages_ok+276/290>
b: 89 7b 0c mov %edi,0xc(%ebx)
Code; c0129c79 <__free_pages_ok+279/290>
e: ff 41 68 incl 0x68(%ecx)
Code; c0129c7c <__free_pages_ok+27c/290>
11: 83 c4 1c add $0x1c,%esp


1 warning and 1 error issued. Results may not be reliable.

grep ^C /usr/src/linux/.config

CONFIG_X86=y
CONFIG_UID16=y
CONFIG_EXPERIMENTAL=y
CONFIG_MK6=y
CONFIG_X86_WP_WORKS_OK=y
CONFIG_X86_INVLPG=y
CONFIG_X86_CMPXCHG=y
CONFIG_X86_XADD=y
CONFIG_X86_BSWAP=y
CONFIG_X86_POPAD_OK=y
CONFIG_RWSEM_XCHGADD_ALGORITHM=y
CONFIG_X86_L1_CACHE_SHIFT=5
CONFIG_X86_ALIGNMENT_16=y
CONFIG_X86_HAS_TSC=y
CONFIG_X86_USE_PPRO_CHECKSUM=y
CONFIG_NOHIGHMEM=y
CONFIG_MTRR=y
CONFIG_X86_TSC=y
CONFIG_NET=y
CONFIG_PCI=y
CONFIG_PCI_GOANY=y
CONFIG_PCI_BIOS=y
CONFIG_PCI_DIRECT=y
CONFIG_ISA=y
CONFIG_PCI_NAMES=y
CONFIG_SYSVIPC=y
CONFIG_SYSCTL=y
CONFIG_KCORE_ELF=y
CONFIG_BINFMT_ELF=y
CONFIG_BLK_DEV_FD=y
CONFIG_UNIX=y
CONFIG_INET=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_IDEPCI=y
CONFIG_BLK_DEV_IDEDMA_PCI=y
CONFIG_IDEDMA_PCI_AUTO=y
CONFIG_BLK_DEV_IDEDMA=y
CONFIG_BLK_DEV_ADMA=y
CONFIG_BLK_DEV_VIA82CXXX=y
CONFIG_IDEDMA_AUTO=y
CONFIG_BLK_DEV_IDE_MODES=y
CONFIG_NETDEVICES=y
CONFIG_NET_ETHERNET=y
CONFIG_NET_PCI=y
CONFIG_8139TOO=y
CONFIG_VT=y
CONFIG_VT_CONSOLE=y
CONFIG_SERIAL=y
CONFIG_SERIAL_CONSOLE=y
CONFIG_UNIX98_PTYS=y
CONFIG_UNIX98_PTY_COUNT=64
CONFIG_REISERFS_FS=y
CONFIG_RAMFS=y
CONFIG_ISO9660_FS=y
CONFIG_PROC_FS=y
CONFIG_DEVPTS_FS=y
CONFIG_EXT2_FS=y
CONFIG_NFS_FS=y
CONFIG_NFS_V3=y
CONFIG_NFSD=y
CONFIG_NFSD_V3=y
CONFIG_SUNRPC=y
CONFIG_LOCKD=y
CONFIG_LOCKD_V4=y
CONFIG_MSDOS_PARTITION=y
CONFIG_VGA_CONSOLE=y
CONFIG_DEBUG_KERNEL=y
CONFIG_MAGIC_SYSRQ=y
--
Randy Hron
http://home.earthlink.net/~rwhron/kernel/bigbox.html

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