Re: [Xen-devel] network_alloc_rx_buffers panic

[David Becker <becker@xxxxxxxxxxx>]

" This is most likely a get_user or put_user faulting.  Could you
" run gdb on your xen image and then check which function these addresses
" are in:  disas 0xfc52e2a4 will tell you...
" 

$ gdb xen/xen-syms 
(gdb) disas 0xfc52e2a4
Dump of assembler code for function __copy_to_user_ll:
0xfc52e270 <__copy_to_user_ll+0>:       sub    $0x8,%esp
0xfc52e273 <__copy_to_user_ll+3>:       mov    0x14(%esp),%ecx
0xfc52e277 <__copy_to_user_ll+7>:       mov    %esi,(%esp)
0xfc52e27a <__copy_to_user_ll+10>:      mov    0x10(%esp),%esi
0xfc52e27e <__copy_to_user_ll+14>:      mov    %ecx,%edx
0xfc52e280 <__copy_to_user_ll+16>:      mov    %edi,0x4(%esp)
0xfc52e284 <__copy_to_user_ll+20>:      mov    0xc(%esp),%edi
0xfc52e288 <__copy_to_user_ll+24>:      cmp    $0x7,%ecx
0xfc52e28b <__copy_to_user_ll+27>:      jbe    0xfc52e2a4 <__copy_to_user_ll+52>
0xfc52e28d <__copy_to_user_ll+29>:      mov    %edi,%ecx
0xfc52e28f <__copy_to_user_ll+31>:      neg    %ecx
0xfc52e291 <__copy_to_user_ll+33>:      and    $0x7,%ecx
0xfc52e294 <__copy_to_user_ll+36>:      sub    %ecx,%edx
0xfc52e296 <__copy_to_user_ll+38>:      repz movsb %ds:(%esi),%es:(%edi)
0xfc52e298 <__copy_to_user_ll+40>:      mov    %edx,%ecx
0xfc52e29a <__copy_to_user_ll+42>:      shr    $0x2,%ecx
0xfc52e29d <__copy_to_user_ll+45>:      and    $0x3,%edx
0xfc52e2a0 <__copy_to_user_ll+48>:      repz movsl %ds:(%esi),%es:(%edi)
0xfc52e2a2 <__copy_to_user_ll+50>:      mov    %edx,%ecx
0xfc52e2a4 <__copy_to_user_ll+52>:      repz movsb %ds:(%esi),%es:(%edi)
0xfc52e2a6 <__copy_to_user_ll+54>:      mov    (%esp),%esi
0xfc52e2a9 <__copy_to_user_ll+57>:      mov    %ecx,%eax
0xfc52e2ab <__copy_to_user_ll+59>:      mov    0x4(%esp),%edi
0xfc52e2af <__copy_to_user_ll+63>:      add    $0x8,%esp
0xfc52e2b2 <__copy_to_user_ll+66>:      ret    
0xfc52e2b3 <__copy_to_user_ll+67>:      lea    0x0(%esi),%esi
0xfc52e2b9 <__copy_to_user_ll+73>:      lea    0x0(%edi),%edi



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