vm_fault during BBB-boot

[Manuel Stühn]

Am 28.12.2014 um 18:57 schrieb Ian Lepore:
> I can't reproduce this on my BBB.  I sync'd to the exact rev you used
> and rebuilt, installed it all on an sdcard and booted, and I boot all
> the way to the login prompt.  I even diff'd my boot messages against the
> ones you posted and there are no significant differences other than
> pathnames and compile times.
>
> Maybe a stack backtrace would help... enter 'bt' at that db> prompt and
> post the output (everything from the vm_fault(...)-> 1 to the end of the
> backtrace).

[...]
mmcsd0: 8GB <SDHC SD08G 3.8 SN C240108F MFG 06/2009 by 2 TM> at mmc0 
48.0MHz/4bit/65535-block

vm_fault(0xc0788e48, 0, 1, 0) -> 1
Fatal kernel mode data abort: 'Translation Fault (S)'
trapframe: 0xdd0cbc60
FSR=00000005, FAR=00000010, spsr=00000113
r0 =00000000, r1 =00000004, r2 =00003d2e, r3 =00000137
r4 =c2be4180, r5 =c2be4180, r6 =c078876c, r7 =c0869a24
r8 =028f5c28, r9 =c0713d48, r10=00000000, r11=dd0cbcb0
r12=00000001, ssp=dd0cbcb0, slr=00101010, pc =c0377d64

[ thread pid 12 tid 100006 ]
Stopped at      _sx_assert+0x48:        ldr     r14, [r0, #0x010]
db> bt
Tracing pid 12 tid 100006 td 0xc2a7d660
db_trace_self() at db_trace_self
          pc = 0xc05c43d4  lr = 0xc02324d0 (db_stack_trace+0x108)
          sp = 0xdd0cb960  fp = 0xdd0cb978
         r10 = 0xc0787b70
db_stack_trace() at db_stack_trace+0x108
          pc = 0xc02324d0  lr = 0xc0231e28 (db_command+0x294)
          sp = 0xdd0cb980  fp = 0xdd0cba20
          r4 = 0x00000000  r5 = 0x00000000
          r6 = 0x00000000
db_command() at db_command+0x294
          pc = 0xc0231e28  lr = 0xc0231b80 (db_command_loop+0x78)
          sp = 0xdd0cba28  fp = 0xdd0cba38
          r4 = 0xc060cef5  r5 = 0xc062832d
          r6 = 0xc0787b5c  r7 = 0xc06cfce8
          r8 = 0xc07235e4  r9 = 0xc07235e0
         r10 = 0x00000001
db_command_loop() at db_command_loop+0x78
          pc = 0xc0231b80  lr = 0xc0234698 (db_trap+0x108)
          sp = 0xdd0cba40  fp = 0xdd0cbb60
          r4 = 0x00000000  r5 = 0xc0787b68
          r6 = 0xc0723608
db_trap() at db_trap+0x108
          pc = 0xc0234698  lr = 0xc03a8c38 (kdb_trap+0xd4)
          sp = 0xdd0cbb68  fp = 0xdd0cbb88
          r4 = 0x00000000  r5 = 0x00000005
          r6 = 0xc0723608  r7 = 0xc06cfce8
kdb_trap() at kdb_trap+0xd4
          pc = 0xc03a8c38  lr = 0xc05d9464 (dab_fatal+0x1c0)
          sp = 0xdd0cbb90  fp = 0xdd0cbba8
          r4 = 0xdd0cbc60  r5 = 0x00000005
          r6 = 0x600001d3  r7 = 0x00000010
          r8 = 0xc2a7d660  r9 = 0xdd0cbc60
         r10 = 0x00000001
dab_fatal() at dab_fatal+0x1c0
          pc = 0xc05d9464  lr = 0xc05d91a4 (abort_handler+0x66c)
          sp = 0xdd0cbbb0  fp = 0xdd0cbc58
          r4 = 0x00000005  r5 = 0x00000001
          r6 = 0xc0788e48  r7 = 0xdd0cbea0
abort_handler() at abort_handler+0x66c
          pc = 0xc05d91a4  lr = 0xc05c61e0 (exception_exit)
          sp = 0xdd0cbc60  fp = 0xdd0cbcb0
          r4 = 0xc2be4180  r5 = 0xc2be4180
          r6 = 0xc078876c  r7 = 0xc0869a24
          r8 = 0x028f5c28  r9 = 0xc0713d48
         r10 = 0x00000000
exception_exit() at exception_exit
          pc = 0xc05c61e0  lr = 0x00101010 (0x101010)
          sp = 0xdd0cbcb0  fp = 0xdd0cbcb0
          r0 = 0x00000000  r1 = 0x00000004
          r2 = 0x00003d2e  r3 = 0x00000137
          r4 = 0xc2be4180  r5 = 0xc2be4180
          r6 = 0xc078876c  r7 = 0xc0869a24
          r8 = 0x028f5c28  r9 = 0xc0713d48
         r10 = 0x00000000 r12 = 0x00000001
_sx_assert() at _sx_assert+0x48
          pc = 0xc0377d64  lr = 0xc085e4d0 ($a+0x54)
          sp = 0xdd0cbcb8  fp = 0xdd0cbdb8
Unknown entry: 0
$a() at $a+0x54
          pc = 0xc085e4d0  lr = 0xc085e4d0 ($a+0x54)
          sp = 0xdd0cbcb8  fp = 0xdd0cbdb8
Unable to unwind into user mode
db>