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Subject2.2.2 oops in kmem_cache_free
Unable to handle kernel NULL pointer dereference at virtual address
00000000
current->tss.cr3 = 0be53000, %cr3 = 0be53000
*pde = 00000000
Oops: 0002
CPU: 0
EIP: 0010:[<c01226b7>]
EFLAGS: 00010286
eax: 0000003b ebx: c0725560 ecx: d6bba000 edx: d6bfe000
esi: dda05100 edi: 00000286 ebp: dda05020 esp: d6bbbf68
ds: 0018 es: 0018 ss: 0018
Process sendmail (pid: 8727, process nr: 56, stackpage=d6bbb000)
Stack: ffffffff 00000000 d6bba000 dda0511c fffffe00 c0113cbb c0725560
dda05100
c0118272 dea42000 dea42000 c0118dee dea42000 d6bba000 00000000
bfffe930
bfffdc38 dc2dd520 d6bba000 400e8000 d6bba000 d6bba08c c0108ccc
ffffffff
Code: c7 05 00 00 00 00 00 00 00 00 5b 5e 5 5d 83 c4 0c c3 8d 76
Oops_code_values invalid value 0x5 in Code line, not a multiple of 2
digits, value ignored

>>EIP: c01226b7 <kmem_cache_free+17b/19c>
Code: c01226b7 <kmem_cache_free+17b/19c> 00000000 <_EIP>:
Code: c01226b7 <kmem_cache_free+17b/19c> 0: c7 05 00 00 00
movl $0x0,0x0
Code: c01226bc <kmem_cache_free+180/19c> 5: 00 00 00 00 00
Code: c01226c1 <kmem_cache_free+185/19c> a: 5b
popl %ebx
Code: c01226c2 <kmem_cache_free+186/19c> b: 5e
popl %esi
Code: c01226c3 <kmem_cache_free+187/19c> c: 5d
popl %ebp
Code: c01226c4 <kmem_cache_free+188/19c> d: 83 c4 0c
addl $0xc,%esp
Code: c01226c7 <kmem_cache_free+18b/19c> 10: c3
ret
Code: c01226c8 <kmem_cache_free+18c/19c> 11: 8d 76 00
leal 0x0(%esi),%esi

Please email me for more info (if needed), or with the solution (if
found) ;)



-- Tomek,
"A sufficiently primitive malloc(3) is indistinguishable from memory leak."
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