where
stack trace for thread 0x34 "/dev/net/rtl8139/0 reader"
    kernel stack: 0x804e7000 to 0x804eb000
frame            caller     <image>:function + offset
804eab08 (+  52) 8007a3eb   <kernel>:invoke_command + 0x0073
804eab3c (+  48) 8007a532   <kernel>:kernel_debugger_loop + 0x0102
804eab6c (+  32) 8007afae   <kernel>:kernel_debugger + 0x00b6
804eab8c (+ 192) 8007aeed   <kernel>:panic + 0x0029
804eac4c (+  64) 800556c6   <kernel>:vm_page_fault + 0x00a6
804eac8c (+ 176) 80083b6a   <kernel>:i386_handle_trap + 0x023a
iframe at 0x804ead44 (end = 0x804ead98)
 eax 0xa0d3b78      ebx 0x8045bc3c      ecx 0xb          edx 0x8022df34
 esi 0x80512700     edi 0x463           ebp 0x804eada8   esp 0x804ead74
 eip 0x8045790b  eflags 0x10286
 vector: 0xe, error code: 0x0
804ead3c (+ 108) 8045790b   </boot/beos/system/add-ons/kernel/drivers/dev/net/rtl8139>:m_free + 0x0017
804eada8 (+  48) 8045786b   </boot/beos/system/add-ons/kernel/drivers/dev/net/rtl8139>:m_freem + 0x0023
804eadd8 (+  64) 80452509   </boot/beos/system/add-ons/kernel/drivers/dev/net/rtl8139>:compat_read + 0x0175
804eae18 (+ 112) 8003a7a7   <kernel>:devfs_read__FPvN20xT0PUl + 0x0157
804eae88 (+  64) 80045125   <kernel>:file_read__FP15file_descriptorxPvPUl + 0x0045
804eaec8 (+  64) 8003fcd3   <kernel>:_kern_read + 0x00af
804eaf08 (+  64) 8008ef5f   <kernel>:read + 0x001f
804eaf48 (+  64) 804c19c7   </boot/beos/system/add-ons/kernel/network/devices/ethernet>:ethernet_receive_data__FP10net_devicePP10net_buffer + 0x00bf
804eaf88 (+  80) 804821cc   </boot/beos/system/add-ons/kernel/network/stack>:device_reader_thread__FPv + 0x007c
804eafd8 (+  32) 80034207   <kernel>:_create_kernel_thread_kentry__Fv + 0x001b
804eaff8 (+2142326792) 8003419c   <kernel>:thread_kthread_exit__Fv + 0x0000
kdebug>