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SubjectOops in 2.1.63 (kmem_cache_free)

My machine is a Redhat 4.9 Mustang beta running on a K6 200

- Kingston NE2000 clone
- Tekram DC-390U SCSI adapter

Hope this is of help to you great guys.

This happened just as I was exiting from make menuconfig
I was about to reconfigure my kernel after booting 2.1.63 for
the first time

regards

Kjartan Maraas


kmem_free: Bad obj addr (objp=c2ca8240, name=<NULL>)
<00000000/00000000>
Unable to handle kernel NULL pointer dereference at virtual address 00000000
current->tss.cr3 = 00101000,
*pde = 00000000
Oops: 0002
CPU: 0
EIP: 0010:[<c011df5d>]
EFLAGS: 00010282
eax: 00000038 ebx: c204b084 ecx: c01aa13c edx: c2cc2000
esi: c2ca8240 edi: 00000282 ebp: c204b000 esp: c211df4c
ds: 0018 es: 0018 ss: 0018
Process sed (pid: 1000, process nr: 33, stackpage=c211d000)
Stack: c2ca8240 0804c000 00001000 c2626040 0004d000 c2ca8240 00000001 0804d000
c204b084 c2ca8240 c0119ed4 c0275620 c2ca8240 c2626040 4009f2d0 00000000
bffff74c c2ca8080 c010ff15 c2626040 c211c000 c0114ebe c2626040 c211c000
Call Trace: [<c0119ed4>] [<c010ff15>] [<c0114ebe>] [<c0115026>] [<c0109242>]
Code: c7 05 00 00 00 00 00 00 00 00 5b 5e 5f 5d 83 c4 0c c3 90 53
kmem_free: Bad obj addr (objp=c2ca8240, name=<NULL>)
<00000000/00000000>
Unable to handle kernel NULL pointer dereference at virtual address 00000000
current->tss.cr3 = 00101000,
*pde = 00000000
Oops: 0002
CPU: 0
EIP: 0010:[<c011df5d>]
EFLAGS: 00010282
eax: 00000038 ebx: c204b084 ecx: c01aa13c edx: c2cc2000
esi: c2ca8240 edi: 00000282 ebp: c204b000 esp: c211df4c
ds: 0018 es: 0018 ss: 0018
Process sed (pid: 1000, process nr: 33, stackpage=c211d000)
Stack: c2ca8240 0804c000 00001000 c2626040 0004d000 c2ca8240 00000001 0804d000
c204b084 c2ca8240 c0119ed4 c0275620 c2ca8240 c2626040 4009f2d0 00000000
bffff74c c2ca8080 c010ff15 c2626040 c211c000 c0114ebe c2626040 c211c000
Call Trace: [<c0119ed4>] [<c010ff15>] [<c0114ebe>] [<c0115026>] [<c0109242>]
Code: c7 05 00 00 00 00 00 00 00 00 5b 5e 5f 5d 83 c4 0c c3 90 53


Here is the output from ksymoops:


Using `/System.map' to map addresses to symbols.

>>EIP: c011df5d <kmem_cache_free+151/170>
Trace: c0119ed4 <exit_mmap+c0/d8>
Trace: c010ff15 <mmput+19/30>
Trace: c0114ebe <do_exit+96/1f0>
Trace: c0115026 <sys_exit+e/10>
Trace: c0109242 <system_call+3a/40>
Code: c011df5d <kmem_cache_free+151/170>
Code: c011df5d <kmem_cache_free+151/170> c7 05 00 00 00 movl $0x0,0x0
Code: c011df62 <kmem_cache_free+156/170> 00 00 00 00 00
Code: c011df6d <kmem_cache_free+161/170> 5b popl %ebx
Code: c011df6e <kmem_cache_free+162/170> 5e popl %esi
Code: c011df6f <kmem_cache_free+163/170> 5f popl %edi
Code: c011df70 <kmem_cache_free+164/170> 5d popl %ebp
Code: c011df71 <kmem_cache_free+165/170> 83 c4 0c addl $0xc,%esp
Code: c011df74 <kmem_cache_free+168/170> c3 ret
Code: c011df75 <kmem_cache_free+169/170> 90 nop
Code: c011df76 <kmem_cache_free+16a/170> 53 pushl %ebx
>>EIP: c011df5d <kmem_cache_free+151/170>
Trace: c0119ed4 <exit_mmap+c0/d8>
Trace: c010ff15 <mmput+19/30>
Trace: c0114ebe <do_exit+96/1f0>
Trace: c0115026 <sys_exit+e/10>
Trace: c0109242 <system_call+3a/40>
Code: c011df5d <kmem_cache_free+151/170>
Code: c011df5d <kmem_cache_free+151/170> c7 05 00 00 00 movl $0x0,0x0
Code: c011df62 <kmem_cache_free+156/170> 00 00 00 00 00
Code: c011df6d <kmem_cache_free+161/170> 5b popl %ebx
Code: c011df6e <kmem_cache_free+162/170> 5e popl %esi
Code: c011df6f <kmem_cache_free+163/170> 5f popl %edi
Code: c011df70 <kmem_cache_free+164/170> 5d popl %ebp
Code: c011df71 <kmem_cache_free+165/170> 83 c4 0c addl $0xc,%esp
Code: c011df74 <kmem_cache_free+168/170> c3 ret
Code: c011df75 <kmem_cache_free+169/170> 90 nop
Code: c011df76 <kmem_cache_free+16a/170> 53 pushl %ebx
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