vm_soft_fault: kernel thread accessing invalid user memory!
vm_page_fault: vm_soft_fault returned error 'Bad address' on fault at 0x20202020, ip 0x80714e0f, write 0, user 0, thread 0x43
CPU 0 halted!
PANIC: vm_page_fault: unhandled page fault in kernel space at 0x20202020, ip 0x80714e0f

Welcome to Kernel Debugging Land...
Running on CPU 1
kdebug> where
stack trace for thread 67 "rl intr handler"
    kernel stack: 0x80536000 to 0x8053a000
frame            caller     <image>:function + offset
80539b3c (+  52) 8008cbdb   <kernel>:invoke_debugger_command + 0x00cf
80539b70 (+  64) 8008d97c   <kernel>:_ParseCommand__16ExpressionParserRi + 0x01f8
80539bb0 (+  48) 8008d36e   <kernel>:EvaluateCommand__16ExpressionParserPCcRi + 0x01de
80539be0 (+ 228) 8008ea90   <kernel>:evaluate_debug_command + 0x0088
80539cc4 (+  64) 8008b71e   <kernel>:kernel_debugger_loop__Fv + 0x017a
80539d04 (+  48) 8008c3c9   <kernel>:kernel_debugger + 0x010d
80539d34 (+ 192) 8008c2b1   <kernel>:panic + 0x0029
80539df4 (+  64) 80062fcb   <kernel>:vm_page_fault + 0x00ab
80539e34 (+  64) 8009af41   <kernel>:page_fault_exception + 0x00b1
80539e74 (+  12) 8009e61d   <kernel>:int_bottom + 0x001d (nearest)
iframe at 0x80539e80 (end = 0x80539ed8)
 eax 0x20202020     ebx 0x80718c28      ecx 0x1          edx 0x200246
 esi 0x90d0fc00     edi 0x90d3e000      ebp 0x80539ee8   esp 0x80539eb4
 eip 0x80714e0f  eflags 0x210286
 vector: 0xe, error code: 0x0
80539e80 (+ 104) 80714e0f   </boot/beos/system/add-ons/kernel/drivers/dev/net/rtl8139>:m_free + 0x0017
80539ee8 (+  48) 80714d71   </boot/beos/system/add-ons/kernel/drivers/dev/net/rtl8139>:m_freem + 0x0025
80539f18 (+  80) 8070c7d0   </boot/beos/system/add-ons/kernel/drivers/dev/net/rtl8139>:rl_txeof + 0x00b8
80539f68 (+  48) 8070c9a1   </boot/beos/system/add-ons/kernel/drivers/dev/net/rtl8139>:rl_intr + 0x0099
80539f98 (+  64) 8070deb7   </boot/beos/system/add-ons/kernel/drivers/dev/net/rtl8139>:intr_handler + 0x0037
80539fd8 (+  32) 8003abbb   <kernel>:_create_kernel_thread_kentry__Fv + 0x001b
80539ff8 (+2142003208) 8003ab50   <kernel>:thread_kthread_exit__Fv + 0x0000
kdebug> thread 67
THREAD: 0x90d3e800
id:                 67 (0x43)
name:               "rl intr handler"
all_next:           0x90c87000
team_next:          0x90d10000
q_next:             0x90b8e800
priority:           100 (next 100)
state:              running
next_state:         ready
cpu:                0x800f2fb4 (1)
sig_pending:        0x0 (blocked: 0x0)
in_kernel:          1
  sem.blocking:     1982
  sem.count:        0
  sem.acquire_status: 0x0
  sem.flags:        0x0
condition variables:
fault_handler:      0x8008cbf0
args:               0x90d3f2a0 0x00000000
entry:              0x8070de80
team:               0x90b67780, "kernel_team"
  exit.sem:         1983
  exit.status:      0x0 (No error)
  exit.reason:      0x0
  exit.signal:      0x0
  exit.waiters:
kernel_stack_area:  610
kernel_stack_base:  0x80536000
user_stack_area:    -1
user_stack_base:    0x00000000
user_local_storage: 0x00000000
kernel_errno:       0x0 (No error)
kernel_time:        40553
user_time:          0
flags:              0x0
architecture dependant section:
        esp: 0x80539c1c
        ss: 0x80530010
        fpu_state at 0x90d3eb60
kdebug>