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SubjectRe: ext3 related oops in 2.4.{18,20} on sparc
From
Ahh!  I forgot to attach the oops!  It is attached here.  Sorry!

noah

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ksymoops 2.4.5 on sparc64 2.4.20. Options used
-V (default)
-k /proc/ksyms (default)
-l /proc/modules (default)
-o /lib/modules/2.4.20/ (default)
-m /boot/System.map-2.4.20 (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?
Jan 6 22:16:02 mantis kernel: Unable to handle kernel NULL pointer dereference
Jan 6 22:16:02 mantis kernel: tsk->{mm,active_mm}->context = 0000000000000534
Jan 6 22:16:02 mantis kernel: tsk->{mm,active_mm}->pgd = fffff800207c0000
Jan 6 22:16:02 mantis kernel: \|/ ____ \|/
Jan 6 22:16:02 mantis kernel: "@'/ .. \`@"
Jan 6 22:16:02 mantis kernel: /_| \__/ |_\
Jan 6 22:16:02 mantis kernel: \__U_/
Jan 6 22:16:02 mantis kernel: rsync(320): Oops
Jan 6 22:16:02 mantis kernel: TSTATE: 0000004411009605 TPC: 000000000048c93c TNPC: 000000000048c940 Y: 00000000 Not tainted
Using defaults from ksymoops -t elf32-sparc -a sparc
Jan 6 22:16:02 mantis kernel: g0: fffff800022d9760 g1: 000000000048c760 g2: 0000000000000002 g3: 0000000000000000
Jan 6 22:16:02 mantis kernel: g4: fffff80000000000 g5: 0000000000000002 g6: fffff80002494000 g7: 0000000000000002
Jan 6 22:16:02 mantis kernel: o0: fffff80002494000 o1: 0000000000000000 o2: 0000000000ff0000 o3: 000000000000ff00
Jan 6 22:16:02 mantis kernel: o4: 0000000000000001 o5: 0000000000000001 sp: fffff800024972d1 ret_pc: 000000000048c920
Jan 6 22:16:02 mantis kernel: l0: fffff8000206cc20 l1: fffff800019b0060 l2: 00000000006b0800 l3: fffff800101f103c
Jan 6 22:16:02 mantis kernel: l4: 0000000000000010 l5: 0000000000000000 l6: 0000000000000000 l7: 0000000000000000
Jan 6 22:16:02 mantis kernel: i0: fffffffffffffff3 i1: fffff8000206cc20 i2: 000000000060cdb8 i3: 000000000048c900
Jan 6 22:16:02 mantis kernel: i4: 0000000000000048 i5: 00000000700e9428 i6: fffff800024973a1 i7: 0000000000469a6c
Jan 6 22:16:02 mantis kernel: Caller[0000000000469a6c]
Jan 6 22:16:02 mantis kernel: Caller[0000000000469d50]
Jan 6 22:16:02 mantis kernel: Caller[000000000045cb3c]
Jan 6 22:16:02 mantis kernel: Caller[000000000042ba30]
Jan 6 22:16:02 mantis kernel: Caller[00000000004107f4]
Jan 6 22:16:02 mantis kernel: Caller[0000000070136090]
Jan 6 22:16:02 mantis kernel: Instruction DUMP: 94102000 15003fc0 d25fa7e7 <d6024000> 1300003f a12ae018 92126300 920ac009 940ac00a


>>PC; 0048c93c <ext3_lookup+3c/c0> <=====

>>g0; fffff800022d9760 <END_OF_CODE+fffff80001bed820/????>
>>g1; 0048c760 <ext3_find_entry+1a0/340>
>>g4; fffff80000000000 <END_OF_CODE+fffff7ffff9140c0/????>
>>g6; fffff80002494000 <END_OF_CODE+fffff80001da80c0/????>
>>o0; fffff80002494000 <END_OF_CODE+fffff80001da80c0/????>
>>o2; 00ff0000 <END_OF_CODE+9040c0/????>
>>o3; 0000ff00 Before first symbol
>>sp; fffff800024972d1 <END_OF_CODE+fffff80001dab391/????>
>>ret_pc; 0048c920 <ext3_lookup+20/c0>
>>l0; fffff8000206cc20 <END_OF_CODE+fffff80001980ce0/????>
>>l1; fffff800019b0060 <END_OF_CODE+fffff800012c4120/????>
>>l2; 006b0800 <cdev_hashtable+3c8/400>
>>l3; fffff800101f103c <END_OF_CODE+fffff8000fb050fc/????>
>>i0; fffffffffffffff3 <END_OF_CODE+ffffffffff9140b3/????>
>>i1; fffff8000206cc20 <END_OF_CODE+fffff80001980ce0/????>
>>i2; 0060cdb8 <ext3_dir_inode_operations+0/a0>
>>i3; 0048c900 <ext3_lookup+0/c0>
>>i5; 700e9428 <END_OF_CODE+6f9fd4e8/????>
>>i6; fffff800024973a1 <END_OF_CODE+fffff80001dab461/????>
>>i7; 00469a6c <lookup_hash+8c/c0>

Trace; 00469a6c <lookup_hash+8c/c0>
Trace; 00469d50 <open_namei+b0/640>
Trace; 0045cb3c <filp_open+3c/80>
Trace; 0042ba30 <sparc32_open+50/100>
Trace; 004107f4 <linux_sparc_syscall32+34/40>
Trace; 70136090 <END_OF_CODE+6fa4a150/????>

Code; 0048c930 <ext3_lookup+30/c0>
00000000 <_PC>:
Code; 0048c930 <ext3_lookup+30/c0>
0: 94 10 20 00 clr %o2
Code; 0048c934 <ext3_lookup+34/c0>
4: 15 00 3f c0 sethi %hi(0xff0000), %o2
Code; 0048c938 <ext3_lookup+38/c0>
8: d2 5f a7 e7 unknown
Code; 0048c93c <ext3_lookup+3c/c0> <=====
c: d6 02 40 00 ld [ %o1 ], %o3 <=====
Code; 0048c940 <ext3_lookup+40/c0>
10: 13 00 00 3f sethi %hi(0xfc00), %o1
Code; 0048c944 <ext3_lookup+44/c0>
14: a1 2a e0 18 sll %o3, 0x18, %l0
Code; 0048c948 <ext3_lookup+48/c0>
18: 92 12 63 00 or %o1, 0x300, %o1
Code; 0048c94c <ext3_lookup+4c/c0>
1c: 92 0a c0 09 and %o3, %o1, %o1
Code; 0048c950 <ext3_lookup+50/c0>
20: 94 0a c0 0a and %o3, %o2, %o2


2 warnings issued. Results may not be reliable.
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