I sent this oops to the file system and a raid maintainer asking for
more
info and received no response. Please let mw know if there is a better
place to send it.
I received a kernel oops in the file system layer on my dual PIII w/
software Raid5
running RedHat 6.2 with the redhat kernel 2.2.16-3smp. I took down all
the system
info that I thought would be relevant, if I missed anything let me know.
The oops occurred suddenly after doing what it had been doing for 6
solid months
and has not given me any grief since.
If there are known errors that could have caused this in the kernel I am
running
please let me know.
Please CC me on any responses.
Much thanks
Orion Henry
Jan 8 19:18:30 aule kernel: Unable to handle kernel paging request at
virtual address 00020078
Jan 8 19:18:30 aule kernel: current->tss.cr3 = 0e52f000, %%cr3 =
0e52f000
Jan 8 19:18:30 aule kernel: *pde = 00000000
Jan 8 19:18:30 aule kernel: Oops: 0002
Jan 8 19:18:30 aule kernel: CPU: 0
Jan 8 19:18:30 aule kernel: EIP: 0010:[getblk+205/324]
Jan 8 19:18:30 aule kernel: EFLAGS: 00010207
Jan 8 19:18:30 aule kernel: eax: c11e00e0 ebx: c11e06e0 ecx:
0000000c edx: 00020040
Jan 8 19:18:30 aule kernel: esi: 00001000 edi: 0000000c ebp:
00000900 esp: ce613d9c
Jan 8 19:18:30 aule kernel: ds: 0018 es: 0018 ss: 0018
Jan 8 19:18:30 aule kernel: Process spawn (pid: 28305, process nr: 45,
stackpage=ce613000)
Jan 8 19:18:30 aule kernel: Stack: 00000900 000003a9 0000000c c0141ee7
00000900 004503a9 00001000 00450000
Jan 8 19:18:30 aule kernel: ce613f08 dce91100 dce91100 00000e75
00001000 00000008 000003b0 00000e75
Jan 8 19:18:30 aule kernel: 00000900 de14c480 ce613e24 00008000
de14c480 ce612000 00000008 00000e75
Jan 8 19:18:30 aule kernel: Call Trace: [ext2_new_block+2291/2756]
[ext2_alloc_block+344/356] [inode_getblk+205/392] [ext2_getblk+194/524]
[ext2_file_write+1308/1584] [refile_buffer+86/184]
[locks_delete_lock+52/128]
The Offending Code is Here
--------------------------------------------------
>From /usr/src/linux-2.2.16/fs/buffer.c:
--------------------------------------------------
/*
* Ok, this is getblk, and it isn't very clear, again to hinder
* race-conditions. Most of the code is seldom used, (ie repeating),
* so it should be much more efficient than it looks.
*
* The algorithm is changed: hopefully better, and an elusive bug
removed.
*
* 14.02.92: changed it to sync dirty buffers a bit: better performance
* when the filesystem starts to get full of dirty blocks (I hope).
*/
struct buffer_head * getblk(kdev_t dev, int block, int size)
{
struct buffer_head * bh;
int isize;
repeat:
bh = get_hash_table(dev, block, size);
if (bh) {
if (!buffer_dirty(bh)) {
bh->b_flushtime = 0;
}
return bh;
}
isize = BUFSIZE_INDEX(size);
get_free:
bh = free_list[isize];
if (!bh)
goto refill;
remove_from_free_list(bh);
/* OK, FINALLY we know that this buffer is the only one of its
kind,
* and that it's unused (b_count=0), unlocked, and clean.
*/
init_buffer(bh, dev, block, end_buffer_io_sync, NULL);
bh->b_state=0;
insert_into_queues(bh);
return bh;
/*
* If we block while refilling the free list, somebody may
* create the buffer first ... search the hashes again.
*/
refill:
refill_freelist(size);
if (!find_buffer(dev,block,size))
goto get_free;
goto repeat;
}
--------------------------------------------------
And it looks like this in the debugger:
$ gdb /boot/vmlinux-2.2.16-3
GNU gdb 5.0
Copyright 2000 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you
are
welcome to change it and/or distribute copies of it under certain
conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for
details.
This GDB was configured as "i386-redhat-linux"...
(no debugging symbols found)...
(gdb) disas getblk
Dump of assembler code for function getblk:
0xc012765c <getblk>: sub $0x4,%esp
0xc012765f <getblk+3>: push %ebp
0xc0127660 <getblk+4>: push %edi
0xc0127661 <getblk+5>: push %esi
0xc0127662 <getblk+6>: push %ebx
0xc0127663 <getblk+7>: xor %ebp,%ebp
0xc0127665 <getblk+9>: mov 0x20(%esp,1),%esi
0xc0127669 <getblk+13>: mov 0x18(%esp,1),%bp
0xc012766e <getblk+18>: push %esi
0xc012766f <getblk+19>: mov 0x20(%esp,1),%edi
0xc0127673 <getblk+23>: push %edi
0xc0127674 <getblk+24>: push %ebp
0xc0127675 <getblk+25>: call 0xc01272f4 <get_hash_table>
0xc012767a <getblk+30>: mov %eax,%ebx
0xc012767c <getblk+32>: add $0xc,%esp
0xc012767f <getblk+35>: test %ebx,%ebx
0xc0127681 <getblk+37>: je 0xc0127698 <getblk+60>
0xc0127683 <getblk+39>: mov 0x18(%ebx),%eax
0xc0127686 <getblk+42>: test $0x2,%al
0xc0127688 <getblk+44>: jne 0xc0127691 <getblk+53>
0xc012768a <getblk+46>: movl $0x0,0x2c(%ebx)
0xc0127691 <getblk+53>: mov %ebx,%eax
0xc0127693 <getblk+55>: jmp 0xc0127798 <getblk+316>
0xc0127698 <getblk+60>: mov %esi,%eax
0xc012769a <getblk+62>: sar $0x9,%eax
0xc012769d <getblk+65>: movsbl 0xc021b500(%eax),%eax
0xc01276a4 <getblk+72>: shl $0x2,%eax
0xc01276a7 <getblk+75>: mov %eax,0x10(%esp,1)
0xc01276ab <getblk+79>: mov 0x10(%esp,1),%edi
0xc01276af <getblk+83>: mov 0xc021b55c(%edi),%ebx
0xc01276b5 <getblk+89>: test %ebx,%ebx
0xc01276b7 <getblk+91>: je 0xc0127774 <getblk+280>
0xc01276bd <getblk+97>: mov 0x8(%ebx),%eax
0xc01276c0 <getblk+100>: shr $0x9,%eax
0xc01276c3 <getblk+103>: mov 0x38(%ebx),%edx
0xc01276c6 <getblk+106>: movsbl 0xc021b500(%eax),%ecx
0xc01276cd <getblk+113>: test %edx,%edx
0xc01276cf <getblk+115>: je 0xc01276d8 <getblk+124>
0xc01276d1 <getblk+117>: mov 0x1c(%ebx),%eax
0xc01276d4 <getblk+120>: test %eax,%eax
0xc01276d6 <getblk+122>: jne 0xc01276e4 <getblk+136>
0xc01276d8 <getblk+124>: push $0xc01d9d20
0xc01276dd <getblk+129>: call 0xc0113c28 <panic>
0xc01276e2 <getblk+134>: mov %esi,%esi
0xc01276e4 <getblk+136>: cmpw $0xffff,0xc(%ebx)
0xc01276ea <getblk+142>: je 0xc01276f8 <getblk+156>
0xc01276ec <getblk+144>: push $0xc01d9d3f
0xc01276f1 <getblk+149>: call 0xc0113c28 <panic>
0xc01276f6 <getblk+154>: mov %esi,%esi
0xc01276f8 <getblk+156>: shl $0x2,%ecx
0xc01276fb <getblk+159>: cmpl $0x0,0xc021b55c(%ecx)
0xc0127702 <getblk+166>: jne 0xc0127710 <getblk+180>
0xc0127704 <getblk+168>: push $0xc01d9d53
0xc0127709 <getblk+173>: call 0xc0113c28 <panic>
0xc012770e <getblk+178>: mov %esi,%esi
0xc0127710 <getblk+180>: cmp %ebx,%eax
0xc0127712 <getblk+182>: jne 0xc0127720 <getblk+196>
0xc0127714 <getblk+184>: movl $0x0,0xc021b55c(%ecx)
0xc012771e <getblk+194>: jmp 0xc012773d <getblk+225>
0xc0127720 <getblk+196>: mov %eax,0x1c(%edx)
0xc0127723 <getblk+199>: mov 0x1c(%ebx),%edx
0xc0127726 <getblk+202>: mov 0x38(%ebx),%eax
0xc0127729 <getblk+205>: mov %eax,0x38(%edx) <---
FAULT
0xc012772c <getblk+208>: cmp %ebx,0xc021b55c(%ecx)
0xc0127732 <getblk+214>: jne 0xc012773d <getblk+225>
0xc0127734 <getblk+216>: mov 0x1c(%ebx),%eax
0xc0127737 <getblk+219>: mov %eax,0xc021b55c(%ecx)
0xc012773d <getblk+225>: movl $0x0,0x38(%ebx)
0xc0127744 <getblk+232>: movl $0x0,0x1c(%ebx)
0xc012774b <getblk+239>: push $0x0
0xc012774d <getblk+241>: push $0xc0127630
0xc0127752 <getblk+246>: mov 0x24(%esp,1),%edi
0xc0127756 <getblk+250>: push %edi
0xc0127757 <getblk+251>: push %ebp
0xc0127758 <getblk+252>: push %ebx
0xc0127759 <getblk+253>: call 0xc01275f4 <init_buffer>
0xc012775e <getblk+258>: movl $0x0,0x18(%ebx)
0xc0127765 <getblk+265>: push %ebx
0xc0127766 <getblk+266>: call 0xc0127154 <insert_into_queues>
0xc012776b <getblk+271>: mov %ebx,%eax
0xc012776d <getblk+273>: add $0x18,%esp
0xc0127770 <getblk+276>: jmp 0xc0127798 <getblk+316>
0xc0127772 <getblk+278>: mov %esi,%esi
0xc0127774 <getblk+280>: push %esi
0xc0127775 <getblk+281>: call 0xc01275bc <refill_freelist>
0xc012777a <getblk+286>: push %esi
0xc012777b <getblk+287>: mov 0x24(%esp,1),%edi
0xc012777f <getblk+291>: push %edi
0xc0127780 <getblk+292>: push %ebp
0xc0127781 <getblk+293>: call 0xc0127264 <find_buffer>
0xc0127786 <getblk+298>: add $0x10,%esp
0xc0127789 <getblk+301>: test %eax,%eax
0xc012778b <getblk+303>: je 0xc01276ab <getblk+79>
0xc0127791 <getblk+309>: jmp 0xc012766e <getblk+18>
0xc0127796 <getblk+314>: mov %esi,%esi
0xc0127798 <getblk+316>: pop %ebx
0xc0127799 <getblk+317>: pop %esi
0xc012779a <getblk+318>: pop %edi
0xc012779b <getblk+319>: pop %ebp
0xc012779c <getblk+320>: pop %ecx
0xc012779d <getblk+321>: ret
0xc012779e <getblk+322>: mov %esi,%esi
End of assembler dump.
(gdb) quit
--------------------------------------------------
# uname -a
Linux aule 2.2.16-3smp #1 SMP Mon Jun 19 19:00:35 EDT 2000 i686 unknown
# cat /proc/version
Linux version 2.2.16-3smp ([EMAIL PROTECTED]) (gcc version
egcs-2.91.66 19990314/Linux (egcs-1.1.2 release)) #1 SMP Mon Jun 19
19:00:35 EDT 2000
# lsmod
Module Size Used by
3c59x 20016 1 (autoclean)
raid5 19372 1
aic7xxx 137464 4
# df
Filesystem 1k-blocks Used Available Use% Mounted on
/dev/hda1 2071384 1107980 858180 56% /
/dev/hda6 13251000 11832 12566048 0% /home
/dev/hda7 2071384 20 1966140 0% /tmp
/dev/md0 26470460 348136 24777700 1% /var
/dev/hda5 2071384 8 1966152 0% /mnt/backup
# cat /etc/fstab
/dev/hda1 / ext2 defaults
1 1
/dev/hda6 /home ext2 defaults
1 2
/dev/hda7 /tmp ext2 defaults
1 2
/dev/md0 /var ext2 defaults
1 2
/dev/hda5 /mnt/backup ext2 defaults
1 2
/dev/fd0 /mnt/floppy auto noauto,owner
0 0
/dev/cdrom /mnt/cdrom iso9660 noauto,owner,ro
0 0
none /proc proc defaults
0 0
none /dev/pts devpts gid=5,mode=620
0 0
/dev/hda8 swap swap defaults
0 0
# cat /dev/raidtab
# /etc/raidtab
# $Id: raidtab,v 1.1 2000/04/16 23:27:07 root Exp root $
# RAID-5 configuration
raiddev /dev/md0
raid-level 5
nr-raid-disks 4
chunk-size 16
# Parity placement algorithm
#parity-algorithm left-asymmetric
#
# the best one for maximum performance:
#
parity-algorithm left-symmetric
#parity-algorithm right-asymmetric
#parity-algorithm right-symmetric
# Spare disks for hot reconstruction
nr-spare-disks 0
device /dev/sda1
raid-disk 0
device /dev/sdb1
raid-disk 1
device /dev/sdc1
raid-disk 2
device /dev/sdd1
raid-disk 3
# cat cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 8
model name : Pentium III (Coppermine)
stepping : 1
cpu MHz : 546.881
cache size : 256 KB
fdiv_bug : no
hlt_bug : no
sep_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 3
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 pn mmx fxsr xmm
bogomips : 1091.17
processor : 1
vendor_id : GenuineIntel
cpu family : 6
model : 8
model name : Pentium III (Coppermine)
stepping : 1
cpu MHz : 546.881
cache size : 256 KB
fdiv_bug : no
hlt_bug : no
sep_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 3
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 pn mmx fxsr xmm
bogomips : 1091.17
# cat pci
PCI devices found:
Bus 0, device 0, function 0:
Host bridge: Intel Unknown device (rev 1).
Vendor id=8086. Device id=1a21.
Fast devsel. Fast back-to-back capable. Master Capable. No
bursts.
Prefetchable 32 bit memory at 0xf0000000 [0xf0000008].
Bus 0, device 1, function 0:
PCI bridge: Intel Unknown device (rev 1).
Vendor id=8086. Device id=1a23.
Fast devsel. Fast back-to-back capable. Master Capable.
Latency=64. Min Gnt=11.
Bus 0, device 2, function 0:
PCI bridge: Intel Unknown device (rev 1).
Vendor id=8086. Device id=1a24.
Fast devsel. Fast back-to-back capable. Master Capable.
Latency=64. Min Gnt=3.
Bus 0, device 30, function 0:
PCI bridge: Intel Unknown device (rev 2).
Vendor id=8086. Device id=2418.
Fast devsel. Fast back-to-back capable. Master Capable. No
bursts. Min Gnt=3.
Bus 0, device 31, function 0:
ISA bridge: Intel Unknown device (rev 2).
Vendor id=8086. Device id=2410.
Medium devsel. Fast back-to-back capable. Master Capable. No
bursts.
Bus 0, device 31, function 1:
IDE interface: Intel Unknown device (rev 2).
Vendor id=8086. Device id=2411.
Medium devsel. Fast back-to-back capable. Master Capable. No
bursts.
I/O at 0xffa0 [0xffa1].
Bus 0, device 31, function 3:
SM Bus: Intel Unknown device (rev 2).
Vendor id=8086. Device id=2413.
Medium devsel. Fast back-to-back capable. IRQ 17.
I/O at 0xefa0 [0xefa1].
Bus 0, device 31, function 5:
Multimedia audio controller: Intel Unknown device (rev 2).
Vendor id=8086. Device id=2415.
Medium devsel. Fast back-to-back capable. IRQ 17. Master
Capable. No bursts.
I/O at 0xe800 [0xe801].
I/O at 0xef00 [0xef01].
Bus 4, device 0, function 0:
VGA compatible controller: S3 Inc. Unknown device (rev 2).
Vendor id=5333. Device id=8a13.
Medium devsel. Master Capable. Latency=64. Min Gnt=4.Max
Lat=255.
Non-prefetchable 32 bit memory at 0xf8000000 [0xf8000000].
Bus 2, device 31, function 0:
PCI bridge: Intel Unknown device (rev 2).
Vendor id=8086. Device id=1360.
Fast devsel. Master Capable. No bursts. Min Gnt=3.Max Lat=128.
Bus 3, device 0, function 0:
PIC: Intel Unknown device (rev 1).
Vendor id=8086. Device id=1161.
Fast devsel. Master Capable. No bursts.
Non-prefetchable 32 bit memory at 0xf68fe000 [0xf68fe000].
Bus 3, device 4, function 0:
SCSI storage controller: Adaptec AIC-7892 (rev 2).
Medium devsel. Fast back-to-back capable. BIST capable. IRQ
32. Master Capable. Latency=64. Min Gnt=40.Max Lat=25.
I/O at 0xb800 [0xb801].
Non-prefetchable 64 bit memory at 0xf68ff000 [0xf68ff004].
Bus 1, device 1, function 0:
Ethernet controller: 3Com 3C905B 100bTX (rev 48).
Medium devsel. IRQ 17. Master Capable. Latency=64. Min
Gnt=10.Max Lat=10.
I/O at 0xac00 [0xac01].
Non-prefetchable 32 bit memory at 0xf67fef80 [0xf67fef80].
Bus 1, device 8, function 0:
Ethernet controller: Intel 82557 (rev 8).
Medium devsel. Fast back-to-back capable. IRQ 16. Master
Capable. Latency=64. Min Gnt=8.Max Lat=56.
Non-prefetchable 32 bit memory at 0xf67ff000 [0xf67ff000].
I/O at 0xaf00 [0xaf01].
Non-prefetchable 32 bit memory at 0xf6600000 [0xf6600000].
# cat /proc/scsi/scsi
Attached devices:
Host: scsi0 Channel: 00 Id: 00 Lun: 00
Vendor: SEAGATE Model: ST39236LW Rev: 0004
Type: Direct-Access ANSI SCSI revision: 03
Host: scsi0 Channel: 00 Id: 01 Lun: 00
Vendor: SEAGATE Model: ST39236LW Rev: 0004
Type: Direct-Access ANSI SCSI revision: 03
Host: scsi0 Channel: 00 Id: 02 Lun: 00
Vendor: SEAGATE Model: ST39236LW Rev: 0004
Type: Direct-Access ANSI SCSI revision: 03
Host: scsi0 Channel: 00 Id: 03 Lun: 00
Vendor: SEAGATE Model: ST39236LW Rev: 0004
Type: Direct-Access ANSI SCSI revision: 03
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [EMAIL PROTECTED]
Please read the FAQ at http://www.tux.org/lkml/
