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SubjectRe: (VM?) oops in 2.4.9-ac10
On Sep 30 Matt Bernstein wrote:

>Hi, this occurred on our main fileserver overnight.
>
>SMP PIII Coppermine; Debian "potato" + bunk 2.4 debs; 2.4.9-ac10 + ext3
>0.9.9 + ext3 speedup + ext3 "experimental VM patch" + jfs-1.0.4; gdth;
>acenic; everything modular; gcc 2.96-85

Oh no, this occurred on our student fileserver *last* night (same kernel,
but compiled for PII). System stability is not looking good. I forgot to
mention I have HIGHMEM = 4GB.

In the absence of any better suggestion, I'll try 2.4.9-ac18.

ksymoops 2.4.1 on i686 2.4.9-ac10-jfs. Options used
-V (default)
-K (specified)
-L (specified)
-o /lib/modules/2.4.9-ac10-jfs/ (default)
-m /boot/System.map-2.4.9-ac10-jfs (default)

No modules in ksyms, skipping objects
kernel BUG at slab.c:1419!
invalid operand: 0000
CPU: 1
EIP: 0010:[<c013662e>]
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010082
eax: 0000001b ebx: 00fac080 ecx: c022af80 edx: 0000712d
esi: f7b90000 edi: f7a87140 ebp: f7b90994 esp: f7ee1f7c
ds: 0018 es: 0018 ss: 0018
Process kswapd (pid: 5, stackpage=f7ee1000)
Stack: c01fe9cd 0000058b c0231a80 00000006 f7eec600 f7eec400 00000006 00000000
00000000 00000000 c221b0c0 000000c0 0000000f c0231a80 0008e000 c01391d1
000000c0 f7ee0000 ffffffff c013924e 000000c0 00000000 c0105000 0008e000
Call Trace: [<c01391d1>] [<c013924e>] [<c0105000>] [<c0105000>] [<c0105926>]
[<c01391e0>]
Code: 0f 0b 5f 58 8b 44 24 20 89 ea 8b 58 18 b8 71 f0 2c 5a 01 da

>>EIP; c013662e <kmem_cache_reap+be/600> <=====
Trace; c01391d1 <inactive_shortage+1/a0>
Trace; c013924e <inactive_shortage+7e/a0>
Trace; c0105000 <_stext+0/0>
Trace; c0105000 <_stext+0/0>
Trace; c0105926 <kernel_thread+26/30>
Trace; c01391e0 <inactive_shortage+10/a0>
Code; c013662e <kmem_cache_reap+be/600>
00000000 <_EIP>:
Code; c013662e <kmem_cache_reap+be/600> <=====
0: 0f 0b ud2a <=====
Code; c0136630 <kmem_cache_reap+c0/600>
2: 5f pop %edi
Code; c0136631 <kmem_cache_reap+c1/600>
3: 58 pop %eax
Code; c0136632 <kmem_cache_reap+c2/600>
4: 8b 44 24 20 mov 0x20(%esp,1),%eax
Code; c0136636 <kmem_cache_reap+c6/600>
8: 89 ea mov %ebp,%edx
Code; c0136638 <kmem_cache_reap+c8/600>
a: 8b 58 18 mov 0x18(%eax),%ebx
Code; c013663b <kmem_cache_reap+cb/600>
d: b8 71 f0 2c 5a mov $0x5a2cf071,%eax
Code; c0136640 <kmem_cache_reap+d0/600>
12: 01 da add %ebx,%edx

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