Oops with md/ext3 on 2.4.25 on alpha architecture

HI list!

We regularly experience kernel Ooops on our alpha SX164 with ext3 on md
on ide controller:

No modules loaded, lsmod empty, self compiled kernel


ksymoops 2.4.5 on alpha 2.4.25.  Options used
     -V (default)
     -k /proc/ksyms (default)
     -l /proc/modules (default)
     -o /lib/modules/2.4.25/ (default)
     -m /boot/System.map-2.4.25 (default)

Warning: You did not tell me where to find symbol information.  I will
assume that the log matches the kernel and modules that are running
right now and I'll use the default options above for symbol resolution.
If the current kernel and/or modules do not match the log, you can get
more accurate output by telling me the kernel version and where to find
map, modules, ksyms etc.  ksymoops -h explains the options.

No modules in ksyms, skipping objects
Warning (read_lsmod): no symbols in lsmod, is /proc/modules a valid lsmod file?
Mar 27 06:33:36 beta kernel: Unable to handle kernel paging request at virtual address 0000440003af267c
Mar 27 06:33:36 beta kernel: find(826): Oops 0
Mar 27 06:33:36 beta kernel: pc = [raid1_read_balance+384/512]  ra = [raid1_make_request+476/1152]  ps = 0000    Not tainted
Mar 27 06:33:36 beta kernel: v0 = 0000000000001068  t0 = fffffffffff7fff0  t1 = 0000000000080010
Mar 27 06:33:36 beta kernel: t2 = 0000440003af269c  t3 = 0000000000000000  t4 = 0000440003af267c
Mar 27 06:33:36 beta kernel: t5 = 0000440003af2674  t6 = 0000000000000002  t7 = fffffc000ec04000
Mar 27 06:33:36 beta kernel: s0 = fffffc000cb419c0  s1 = 0000000000000900  s2 = fffffc0000221000
Mar 27 06:33:36 beta kernel: s3 = fffffc000cb419c0  s4 = fffffc000fe94cc0  s5 = 0000000000000000
Mar 27 06:33:36 beta kernel: s6 = fffffc000098d8a0
Mar 27 06:33:36 beta kernel: a0 = fffffc0000221000  a1 = fffffc000cb419c0  a2 = fffffc000cb419c0
Mar 27 06:33:36 beta kernel: a3 = 0000000000001000  a4 = 0000000000000008  a5 = fffffc0000221018
Mar 27 06:33:36 beta kernel: t8 = 0000000000000000  t9 = 00004800038d1680  t10= 0000000000080010
Mar 27 06:33:36 beta kernel: t11= fffffc0000221020  pv = fffffc00004a8ba0  at = fffffc000022101c
Mar 27 06:33:36 beta kernel: gp = fffffc000062fbe8  sp = fffffc000ec07c18
Mar 27 06:33:36 beta kernel: Trace:fffffc00004ab950 fffffc0000355ba0 fffffc0000392abc fffffc000043fba4 fffffc000043fcac fffffc000044000c fffffc0000355ba0 fffffc0000392b04 fffffc000036b5e0 fffffc000038ee28 fffffc000036ac28 fffffc000036b5e0 fffffc000036489c fffffc00003648f8 fffffc00003634b4 fffffc000036b5e0 fffffc000036b808 fffffc0000310c40 
Mar 27 06:33:36 beta kernel: Code: 42fc0403  2ffe0000  42f90405  a0f003d8  40a49525  40c49526 <a0250000> 40649523 
Using defaults from ksymoops -t elf64-alpha -a alpha


Trace; fffffc00004ab950 <md_make_request+90/120>
Trace; fffffc0000355ba0 <end_buffer_io_sync+0/80>
Trace; fffffc0000392abc <ext3_bread+1c/e0>
Trace; fffffc000043fba4 <generic_make_request+204/240>
Trace; fffffc000043fcac <submit_bh+cc/1e0>
Trace; fffffc000044000c <ll_rw_block+24c/320>
Trace; fffffc0000355ba0 <end_buffer_io_sync+0/80>
Trace; fffffc0000392b04 <ext3_bread+64/e0>
Trace; fffffc000036b5e0 <filldir64+0/1c0>
Trace; fffffc000038ee28 <ext3_readdir+a8/4c0>
Trace; fffffc000036ac28 <vfs_readdir+e8/1c0>
Trace; fffffc000036b5e0 <filldir64+0/1c0>
Trace; fffffc000036489c <link_path_walk+d7c/dc0>
Trace; fffffc00003648f8 <path_walk+18/40>
Trace; fffffc00003634b4 <permission+34/40>
Trace; fffffc000036b5e0 <filldir64+0/1c0>
Trace; fffffc000036b808 <sys_getdents64+68/120>
Trace; fffffc0000310c40 <entSys+a8/c0>

Code;  ffffffffffffffe8 <END_OF_CODE+3ffff98e430/????>
0000000000000000 <_PC>:
Code;  ffffffffffffffe8 <END_OF_CODE+3ffff98e430/????>
   0:   03 04 fc 42       addq t9,at,t2
Code;  ffffffffffffffec <END_OF_CODE+3ffff98e434/????>
   4:   00 00 fe 2f       unop 
Code;  fffffffffffffff0 <END_OF_CODE+3ffff98e438/????>
   8:   05 04 f9 42       addq t9,t11,t4
Code;  fffffffffffffff4 <END_OF_CODE+3ffff98e43c/????>
   c:   d8 03 f0 a0       ldl  t6,984(a0)
Code;  fffffffffffffff8 <END_OF_CODE+3ffff98e440/????>
  10:   25 95 a4 40       subq t4,0x24,t4
Code;  fffffffffffffffc <END_OF_CODE+3ffff98e444/????>
  14:   26 95 c4 40       subq t5,0x24,t5
Code;  0000000000000000 Before first symbol
  18:   00 00 25 a0       ldl  t0,0(t4)
Code;  0000000000000004 Before first symbol
  1c:   23 95 64 40       subq t2,0x24,t2


2 warnings issued.  Results may not be reliable.


Can you help us with this oops and how to fix it?

Attached is the config file and the output of dmesg.

Best wishes

Norbert

-------------------------------------------------------------------------------
Norbert Preining <preining AT logic DOT at>         Technische Universität Wien
gpg DSA: 0x09C5B094      fp: 14DF 2E6C 0307 BE6D AD76  A9C0 D2BF 4AA3 09C5 B094
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