ReiserFS Oops (2.4.1, deterministic, symlink related)

[Jan Kasprzak]

	Hello,

	with ReiserFS support in 2.4.1 I have decided to give it a try.
I created a filesystem on a spare partition, mounted it as /mnt,
and tried to use it. The kernel crashed - I am able to reproduce it
with the following steps:

- boot linux with init=/bin/bash
- [optional] /sbin/mkreiserfs /dev/hdd1 (it can be reproduced even
	on freshly created FS)
- mount -t reiserfs /dev/hdd1 /mnt
- cp -arv /usr /mnt

	I am attaching the details, feel free to ask for more information,
if you want it. Please Cc: me in any reply.

Oops is a NULL pointer dereference at address 00000010,
EIP is c017c7c3 (in check_leaf), EFLAGS is 00010292, Process is "cp",
Code: 8b 52 10 ff d2 59 5b 8b 54 24 14 8b 42 34 89 c7 0f b7 47 02,
Call trace is the following:
	c015f459 (in do_balance)
	c0179466 (in fix_nodes)
	c0179476 (also in fix_nodes)
	c018612c (in reiserfs_insert_item)
	c0173cb4 (near the end of reiserfs_new_symlink)
	c0174170 (in reiserfs_new_inode)
	c0170cbd (in reiserfs_symlink)
	c0142a45 (in d_alloc)
	c013c825 (in vfs_symlink)
	c013c8de (in sys_symlink)
	c0109023 (in system_call)

	All numbers are written by hand from the screen, so there may
be a minor mistakes. Looking at the cp output, it seems it crashed
while copying the symlink "/usr/bin/sgml2xml -> osx" to /mnt/bin.

	My computer is almost generic Red Hat 7.0 with all updates.
Hardware is K6-2 @523 MHz, 128M RAM, VIA VT82C598 north bridge.

	I tried to create ext2 filesystem on /dev/hdd1, and then
cp -arv /usr /mnt worked fine.

	The kernel config (grep '=[ym]' /usr/src/linux/.config) is the
following (no modules were loadaed, though):

CONFIG_X86=y
CONFIG_ISA=y
CONFIG_UID16=y
CONFIG_EXPERIMENTAL=y
CONFIG_MODULES=y
CONFIG_KMOD=y
CONFIG_MK6=y
CONFIG_X86_WP_WORKS_OK=y
CONFIG_X86_INVLPG=y
CONFIG_X86_CMPXCHG=y
CONFIG_X86_BSWAP=y
CONFIG_X86_POPAD_OK=y
CONFIG_X86_ALIGNMENT_16=y
CONFIG_X86_TSC=y
CONFIG_X86_USE_PPRO_CHECKSUM=y
CONFIG_NOHIGHMEM=y
CONFIG_MTRR=y
CONFIG_NET=y
CONFIG_PCI=y
CONFIG_PCI_GOANY=y
CONFIG_PCI_BIOS=y
CONFIG_PCI_DIRECT=y
CONFIG_HOTPLUG=y
CONFIG_PCMCIA=y
CONFIG_CARDBUS=y
CONFIG_SYSVIPC=y
CONFIG_SYSCTL=y
CONFIG_KCORE_ELF=y
CONFIG_BINFMT_AOUT=m
CONFIG_BINFMT_ELF=y
CONFIG_BINFMT_MISC=y
CONFIG_PARPORT=m
CONFIG_PARPORT_PC=m
CONFIG_PARPORT_PC_FIFO=y
CONFIG_PARPORT_PC_SUPERIO=y
CONFIG_PARPORT_1284=y
CONFIG_BLK_DEV_FD=m
CONFIG_BLK_DEV_LOOP=m
CONFIG_PACKET=y
CONFIG_PACKET_MMAP=y
CONFIG_NETLINK=y
CONFIG_RTNETLINK=y
CONFIG_UNIX=y
CONFIG_INET=y
CONFIG_INET_ECN=y
CONFIG_IPV6=m
CONFIG_IPV6_EUI64=y
CONFIG_IDE=y
CONFIG_BLK_DEV_IDE=y
CONFIG_BLK_DEV_IDEDISK=y
CONFIG_IDEDISK_MULTI_MODE=y
CONFIG_BLK_DEV_IDECS=m
CONFIG_BLK_DEV_IDECD=m
CONFIG_BLK_DEV_IDEPCI=y
CONFIG_IDEPCI_SHARE_IRQ=y
CONFIG_BLK_DEV_IDEDMA_PCI=y
CONFIG_IDEDMA_PCI_AUTO=y
CONFIG_BLK_DEV_IDEDMA=y
CONFIG_IDEDMA_PCI_WIP=y
CONFIG_IDEDMA_NEW_DRIVE_LISTINGS=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_VENDOR_3COM=y
CONFIG_VORTEX=y
CONFIG_HAMACHI=m
CONFIG_PPP=m
CONFIG_PPP_ASYNC=m
CONFIG_PPP_DEFLATE=m
CONFIG_PPP_BSDCOMP=m
CONFIG_WAN=y
CONFIG_COSA=m
CONFIG_VT=y
CONFIG_VT_CONSOLE=y
CONFIG_SERIAL=y
CONFIG_UNIX98_PTYS=y
CONFIG_PRINTER=m
CONFIG_MOUSE=y
CONFIG_PSMOUSE=y
CONFIG_NVRAM=m
CONFIG_RTC=m
CONFIG_AGP=y
CONFIG_AGP_VIA=y
CONFIG_DRM=y
CONFIG_DRM_MGA=y
CONFIG_PCMCIA_SERIAL=y
CONFIG_AUTOFS4_FS=y
CONFIG_REISERFS_FS=y
CONFIG_REISERFS_CHECK=y
CONFIG_ISO9660_FS=m
CONFIG_PROC_FS=y
CONFIG_DEVPTS_FS=y
CONFIG_EXT2_FS=y
CONFIG_CODA_FS=m
CONFIG_NFS_FS=y
CONFIG_NFS_V3=y
CONFIG_NFSD=m
CONFIG_NFSD_V3=y
CONFIG_SUNRPC=y
CONFIG_LOCKD=y
CONFIG_LOCKD_V4=y
CONFIG_MSDOS_PARTITION=y
CONFIG_VGA_CONSOLE=y
CONFIG_VIDEO_SELECT=y
CONFIG_SOUND=y
CONFIG_SOUND_ES1371=y
CONFIG_USB=m
CONFIG_USB_DEVICEFS=y
CONFIG_USB_UHCI=m
CONFIG_USB_AUDIO=m
CONFIG_USB_SCANNER=m

	The dmesg output:

Linux version 2.4.1 ([e-mail]) (gcc version 2.96 20000731 (Red Hat Linux 7.0)) #2 Fri Feb 2 11:46:21 CET 2001
BIOS-provided physical RAM map:
 BIOS-e820: 000000000009fc00 @ 0000000000000000 (usable)
 BIOS-e820: 0000000000000400 @ 000000000009fc00 (usable)
 BIOS-e820: 0000000000010000 @ 00000000000f0000 (reserved)
 BIOS-e820: 0000000000010000 @ 00000000ffff0000 (reserved)
 BIOS-e820: 0000000007ef0000 @ 0000000000100000 (usable)
 BIOS-e820: 000000000000d000 @ 0000000007ff3000 (ACPI data)
 BIOS-e820: 0000000000003000 @ 0000000007ff0000 (ACPI NVS)
On node 0 totalpages: 32752
zone(0): 4096 pages.
zone(1): 28656 pages.
zone(2): 0 pages.
Kernel command line: auto BOOT_IMAGE=linux ro root=301 BOOT_FILE=/boot/linux no-hlt
Initializing CPU#0
Detected 524.100 MHz processor.
Console: colour VGA+ 80x50
Calibrating delay loop... 1045.29 BogoMIPS
Memory: 126608k/131008k available (1153k kernel code, 4012k reserved, 396k data, 64k init, 0k highmem)
Dentry-cache hash table entries: 16384 (order: 5, 131072 bytes)
Buffer-cache hash table entries: 4096 (order: 2, 16384 bytes)
Page-cache hash table entries: 32768 (order: 5, 131072 bytes)
Inode-cache hash table entries: 8192 (order: 4, 65536 bytes)
CPU: Before vendor init, caps: 008021bf 808029bf 00000000, vendor = 2
CPU: L1 I Cache: 32K (32 bytes/line), D cache 32K (32 bytes/line)
CPU: After vendor init, caps: 008021bf 808029bf 00000000 00000002
CPU: After generic, caps: 008021bf 808029bf 00000000 00000002
CPU: Common caps: 008021bf 808029bf 00000000 00000002
CPU: AMD-K6(tm) 3D processor stepping 0c
Checking 'hlt' instruction... disabled
POSIX conformance testing by UNIFIX
mtrr: v1.37 (20001109) Richard Gooch ([e-mail])
mtrr: detected mtrr type: AMD K6
PCI: PCI BIOS revision 2.10 entry at 0xfb2b0, last bus=1
PCI: Using configuration type 1
PCI: Probing PCI hardware
PCI: Using IRQ router VIA [1106/0586] at 00:07.0
Activating ISA DMA hang workarounds.
Linux NET4.0 for Linux 2.4
Based upon Swansea University Computer Society NET3.039
Initializing RT netlink socket
DMI 2.2 present.
33 structures occupying 873 bytes.
DMI table at 0x000F0800.
BIOS Vendor: Award Software International, Inc.
BIOS Version: 4.51 PG
BIOS Release: 03/15/99
System Vendor: VIA Technologies, Inc..
Product Name: VT82C597.
Version  .
Serial Number  .
Starting kswapd v1.8
Detected PS/2 Mouse Port.
pty: 256 Unix98 ptys configured
block: queued sectors max/low 84088kB/28029kB, 256 slots per queue
Uniform Multi-Platform E-IDE driver Revision: 6.31
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
VP_IDE: IDE controller on PCI bus 00 dev 39
VP_IDE: chipset revision 6
VP_IDE: not 100% native mode: will probe irqs later
VP_IDE: VIA vt82c586b IDE UDMA33 controller on pci0:7.1
    ide0: BM-DMA at 0xd000-0xd007, BIOS settings: hda:DMA, hdb:DMA
    ide1: BM-DMA at 0xd008-0xd00f, BIOS settings: hdc:DMA, hdd:DMA
hda: ST38410A, ATA DISK drive
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
hdd: ST320423A, ATA DISK drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
ide1 at 0x170-0x177,0x376 on irq 15
hda: 16841664 sectors (8623 MB) w/512KiB Cache, CHS=1048/255/63, UDMA(33)
hdd: 40011300 sectors (20486 MB) w/512KiB Cache, CHS=39693/16/63, UDMA(33)
Partition check:
 hda: hda1 hda2 hda3
 hdd: hdd1
Serial driver version 5.02 (2000-08-09) with MANY_PORTS SHARE_IRQ SERIAL_PCI enabled
ttyS00 at 0x03f8 (irq = 4) is a 16550A
ttyS01 at 0x02f8 (irq = 3) is a 16550A
PCI: Found IRQ 9 for device 00:09.0
PCI: The same IRQ used for device 00:08.1
3c59x.c:LK1.1.12 06 Jan 2000  Donald Becker and others. http://www.scyld.com/network/vortex.html $Revision: 1.102.2.46 $
See Documentation/networking/vortex.txt
eth0: 3Com PCI 3c905 Boomerang 100baseTx at 0xe000,  00:60:97:36:90:ac, IRQ 9
  product code 'HH' rev 00.0 date 11-11-96
  8K word-wide RAM 3:5 Rx:Tx split, autoselect/MII interface.
  MII transceiver found at address 24, status 782f.
  Enabling bus-master transmits and whole-frame receives.
Linux agpgart interface v0.99 (c) Jeff Hartmann
agpgart: Maximum main memory to use for agp memory: 94M
agpgart: Detected Via MVP3 chipset
agpgart: AGP aperture is 64M @ 0xe0000000
[drm] AGP 0.99 on VIA MVP3 @ 0xe0000000 64MB
[drm] Initialized mga 2.0.1 20000928 on minor 63
es1371: version v0.27 time 10:11:49 Feb  2 2001
es1371: found chip, vendor id 0x1274 device id 0x1371 revision 0x08
PCI: Assigned IRQ 9 for device 00:0b.0
es1371: found es1371 rev 8 at io 0xe400 irq 9
es1371: features: joystick 0x0
ac97_codec: AC97 Audio codec, id: 0x4352:0x5913 (Cirrus Logic CS4297A)
Linux PCMCIA Card Services 3.1.22
  options:  [pci] [cardbus]
PCI: Found IRQ 9 for device 00:08.0
IRQ routing conflict in pirq table for device 00:08.0
PCI: Found IRQ 9 for device 00:08.1
PCI: The same IRQ used for device 00:09.0
NET4: Linux TCP/IP 1.0 for NET4.0
IP Protocols: ICMP, UDP, TCP
IP: routing cache hash table of 512 buckets, 4Kbytes
TCP: Hash tables configured (established 8192 bind 8192)
NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
Yenta IRQ list 0000, PCI irq11
Socket status: 10000006
Yenta IRQ list 0000, PCI irq9
Socket status: 10000006
VFS: Mounted root (ext2 filesystem) readonly.
Freeing unused kernel memory: 64k freed
Adding Swap: 265064k swap-space (priority -1)
usb.c: registered new driver usbdevfs
usb.c: registered new driver hub
usb-uhci.c: $Revision: 1.251 $ time 10:23:17 Feb  2 2001
usb-uhci.c: High bandwidth mode enabled
usb-uhci.c: USB UHCI at I/O 0xd400, IRQ 12
usb-uhci.c: Detected 2 ports
usb.c: new USB bus registered, assigned bus number 1
hub.c: USB hub found
hub.c: 2 ports detected
eth0: first available media type: MII
Installing knfsd (copyright (C) 1996 [e-mail]).

	Hope this helps,

-Yenya

-- 
\ Jan "Yenya" Kasprzak <kas at fi.muni.cz>       http://www.fi.muni.cz/~kas/
\\ PGP: finger kas at aisa.fi.muni.cz   0D99A7FB206605D7 8B35FCDE05B18A5E //
\\\             Czech Linux Homepage:  http://www.linux.cz/              ///
> Is there anything else I can contribute? -- The latitude and longtitude of
the bios writers current position, and a ballistic missile.       (Alan Cox)