Dreamplug: Panic when copying from USB stick to internal SD-Card (USB)

[Mattia Rossi]

Hi all,

does anyone have a hint on what's happening here?

I keep running into panics when copying world from the USB stick i boot 
from, to the internal SD-Card where I want to boot from next.

backtrace:

root at dreamplug:/ # panic: Lock vm object not exclusively locked @ 
/usr/devel/dre
amplug/sys/arm/arm/pmap.c:4474

KDB: enter: panic
[ thread pid 8 tid 100040 ]
Stopped at      kdb_enter+0x4c: ldrb    r15, [r15, r15, ror r15]!
db> bt
Tracing pid 8 tid 100040 td 0xc3c6d320
db_trace_self() at db_trace_self
          pc = 0xc0db048c  lr = 0xc0947f44 (db_hex2dec+0x4d4)
          sp = 0xde03da10  fp = 0xde03da28
         r10 = 0xc0f562ec
db_hex2dec() at db_hex2dec+0x4d4
          pc = 0xc0947f44  lr = 0xc09478b8 (db_command_loop+0x300)
          sp = 0xde03da30  fp = 0xde03dad0
          r4 = 0x00000000  r5 = 0x00000000
          r6 = 0x00000000
db_command_loop() at db_command_loop+0x300
          pc = 0xc09478b8  lr = 0xc0947608 (db_command_loop+0x50)
          sp = 0xde03dad8  fp = 0xde03dae8
          r4 = 0xc0e0500c  r5 = 0xc0e2214d
          r6 = 0xc0f562d8  r7 = 0xde03dcc0
          r8 = 0xc0f4a340  r9 = 0xc0f4a344
         r10 = 0xc0eee390
db_command_loop() at db_command_loop+0x50
          pc = 0xc0947608  lr = 0xc0949fe8 (X_db_symbol_values+0x250)
          sp = 0xde03daf0  fp = 0xde03dc10
          r4 = 0x00000000  r5 = 0xc0f562e4
          r6 = 0xc0f4a368
X_db_symbol_values() at X_db_symbol_values+0x250
          pc = 0xc0949fe8  lr = 0xc0af1318 (kdb_trap+0xd4)
          sp = 0xde03dc18  fp = 0xde03dc38
          r4 = 0x00000000  r5 = 0x00000001
          r6 = 0xc0f4a368  r7 = 0xde03dcc0
kdb_trap() at kdb_trap+0xd4
          pc = 0xc0af1318  lr = 0xc0dc2c60 (undefinedinstruction+0x25c)
          sp = 0xde03dc40  fp = 0xde03dcb8
          r4 = 0x00000000  r5 = 0x00000000
          r6 = 0xc0dc2954  r7 = 0xe7ffffff
          r8 = 0xc3c6d320  r9 = 0xc0af0bc0
         r10 = 0xde03dcc0
undefinedinstruction() at undefinedinstruction+0x25c
          pc = 0xc0dc2c60  lr = 0xc0db2034 (exception_exit)
          sp = 0xde03dcc0  fp = 0xde03dd18
          r4 = 0xffffffff  r5 = 0xffff1004
          r6 = 0xc0e1e26a  r7 = 0xc0f3c2e0
          r8 = 0xc3c6d320  r9 = 0xc0f57dc0
         r10 = 0xc0f3c140
exception_exit() at exception_exit
          pc = 0xc0db2034  lr = 0xc0af0bb4 (kdb_enter+0x40)
          sp = 0xde03dd10  fp = 0xde03dd18
          r0 = 0xc0f4a354  r1 = 0x00000000
          r2 = 0xc0e25b59  r3 = 0x000000ab
          r4 = 0xc0e221a7  r5 = 0xde03dd54
          r6 = 0xc0e1e26a  r7 = 0xc0f3c2e0
          r8 = 0xc3c6d320  r9 = 0xc0f57dc0
         r10 = 0xc0f3c140 r12 = 0x00000000
kdb_enter() at kdb_enter+0x50
          pc = 0xc0af0bc4  lr = 0xc0abc964 (kassert_panic+0x1cc)
          sp = 0xde03dd20  fp = 0xde03dd40
          r4 = 0x00000100
kassert_panic() at kassert_panic+0x1cc
          pc = 0xc0abc964  lr = 0xc0abc9cc (kproc_shutdown)
          sp = 0xde03dd48  fp = 0xde03dd4c
          r4 = 0xc3c6d320  r5 = 0xc0f5cd10
          r6 = 0xc0f55080  r7 = 0xc10720bc
          r8 = 0xc0e57eea  r9 = 0xc0f55030
         r10 = 0x000002fe
kproc_shutdown() at kproc_shutdown
          pc = 0xc0abc9cc  lr = 0xc3c6d320 (0xc3c6d320)
          sp = 0xde03dd54  fp = 0xde03dd68
          r4 = 0xc0abc9cc  r5 = 0xde03dd54
Unknown entry: 0
_end() at 0xc3c6d320
          pc = 0xc3c6d320  lr = 0xc3c6d320 (0xc3c6d320)
          sp = 0xde03dd54  fp = 0xde03dd68
Unable to unwind into user mode
db>


Cheers,

Mat