Hi Dave,
It looks like the second system doesn't have a tlb
(this=0x0) in the #0 frame.
Thanks,
Ali
On 18.10.2012 11:14, David
Roberts wrote:
> Hello,
>
> I'm using the latest development
repository and ran into a problem when restoring checkpoints. I create
the checkpoint in atomic mode, then restore it with detailed mode, which
instantly segfaults. Any advice would be appreciated;
>
> 1) creating
checkpoint
>
> ./build/ARM/gem5.opt configs/example/fs.py -n 1
--kernel=vmlinux-3.3-arm-vexpress-emm-pcie --machine-type=VExpress_EMM
--cpu-type=atomic --clock=2.5GHz --script=test.rcS
>
> 2) restoring
from checkpoint in detailed mode
>
> ./build/ARM/gem5.debug
configs/example/fs.py -n 1 --kernel=vmlinux-3.3-arm-vexpress-emm-pcie
--machine-type=VExpress_EMM --restore-with-cpu=detailed --caches
--clock=2.5GHz --script=test.rcS -r 1
>
> Error message when run in
gdb;
>
> Program received signal SIGSEGV, Segmentation fault.
>
0x000000000046c9e2 in ArmISA::TLB::invalidateMiscReg (this=0x0) at
build/ARM/arch/arm/tlb.hh:258
> 258 inline void invalidateMiscReg() {
miscRegValid = false; }
> (gdb) bt
> #0 0x000000000046c9e2 in
ArmISA::TLB::invalidateMiscReg (this=0x0) at
build/ARM/arch/arm/tlb.hh:258
> #1 0x00000000004c573e in
ArmISA::copyRegs (src=0x3b8fe20, dest=0x3ec5eb0) at
build/ARM/arch/arm/utility.cc:159
> #2 0x000000000144b701 in
SimpleThread::copyArchRegs (this=0x2adbd20, src_tc=0x3b8fe20) at
build/ARM/cpu/simple_thread.cc:265
> #3 0x000000000144ab2f in
SimpleThread::copyState (this=0x2adbd20, oldContext=0x3b8fe20) at
build/ARM/cpu/simple_thread.cc:165
> #4 0x000000000144aa7b in
SimpleThread::copyTC (this=0x2adbd20, context=0x3b8fe20) at
build/ARM/cpu/simple_thread.cc:146
> #5 0x000000000149ad94 in
FullO3CPU<O3CPUImpl>::unserialize (this=0x3b33110, cp=0x49f8750,
section=...) at build/ARM/cpu/o3/cpu.cc:1115
> #6 0x0000000001ac2665 in
SimObject::loadState (this=0x3b33110, cp=0x49f8750) at
build/ARM/sim/sim_object.cc:83
> #7 0x0000000001ea591f in
_wrap_SimObject_loadState (args=0x2e21ef0) at
build/ARM/python/m5/internal/param_SimObject_wrap.cc:3039
> #8
0x00002aaaaab4b1e8 in PyObject_Call (func=0x2aaaaaee3908, arg=0x2e21ef0,
kw=0x0) at Objects/abstract.c:2487
> #9 0x00002aaaaabe25dc in
ext_do_call (f=0x480d320, throwflag=<value optimized out>) at
Python/ceval.c:3978
> #10 PyEval_EvalFrameEx (f=0x480d320,
throwflag=<value optimized out>) at Python/ceval.c:2410
> #11
0x00002aaaaabe673f in PyEval_EvalCodeEx (co=0x2aaaaaffe558,
globals=<value optimized out>, locals=<value optimized out>,
args=0x32dbfa8, argcount=2, kws=0x32dbfb8, kwcount=0, defs=0x0,
defcount=0, closure=0x0) at Python/ceval.c:2942
> #12 0x00002aaaaabe4517
in call_function (f=0x32dbde0, throwflag=<value optimized out>) at
Python/ceval.c:3775
> #13 PyEval_EvalFrameEx (f=0x32dbde0,
throwflag=<value optimized out>) at Python/ceval.c:2370
> #14
0x00002aaaaabe673f in PyEval_EvalCodeEx (co=0x2cedd50, globals=<value
optimized out>, locals=<value optimized out>, args=0x3809940,
argcount=1, kws=0x3809948, kwcount=0, defs=0x32d07e8, defcount=1,
closure=0x0)
> at Python/ceval.c:2942
> #15 0x00002aaaaabe4517 in
call_function (f=0x38096c0, throwflag=<value optimized out>) at
Python/ceval.c:3775
> #16 PyEval_EvalFrameEx (f=0x38096c0,
throwflag=<value optimized out>) at Python/ceval.c:2370
> #17
0x00002aaaaabe4e26 in call_function (f=0x37bacb0, throwflag=<value
optimized out>) at Python/ceval.c:3765
> #18 PyEval_EvalFrameEx
(f=0x37bacb0, throwflag=<value optimized out>) at Python/ceval.c:2370
>
#19 0x00002aaaaabe673f in PyEval_EvalCodeEx (co=0x2d8d378,
globals=<value optimized out>, locals=<value optimized out>, args=0x0,
argcount=0, kws=0x0, kwcount=0, defs=0x0, defcount=0, closure=0x0) at
Python/ceval.c:2942
> #20 0x00002aaaaabe6782 in PyEval_EvalCode (co=0x0,
globals=0x7fffffffa459, locals=0x144da20) at Python/ceval.c:515
> #21
0x00002aaaaabe5576 in exec_statement (f=0x361d850, throwflag=<value
optimized out>) at Python/ceval.c:4360
> #22 PyEval_EvalFrameEx
(f=0x361d850, throwflag=<value optimized out>) at Python/ceval.c:1706
>
#23 0x00002aaaaabe673f in PyEval_EvalCodeEx (co=0x2d2c8a0,
globals=<value optimized out>, locals=<value optimized out>, args=0x0,
argcount=0, kws=0x2db43c0, kwcount=0, defs=0x0, defcount=0, closure=0x0)
at Python/ceval.c:2942
> #24 0x00002aaaaabe4517 in call_function
(f=0x2db4240, throwflag=<value optimized out>) at Python/ceval.c:3775
>
#25 PyEval_EvalFrameEx (f=0x2db4240, throwflag=<value optimized out>) at
Python/ceval.c:2370
> #26 0x00002aaaaabe673f in PyEval_EvalCodeEx
(co=0x2d8d3f0, globals=<value optimized out>, locals=<value optimized
out>, args=0x0, argcount=0, kws=0x0, kwcount=0, defs=0x0, defcount=0,
closure=0x0) at Python/ceval.c:2942
> #27 0x00002aaaaabe6782 in
PyEval_EvalCode (co=0x0, globals=0x7fffffffa459, locals=0x144da20) at
Python/ceval.c:515
> #28 0x00002aaaaac076c9 in run_mod (str=0x20eac33
"m5.main()", start=<value optimized out>, globals=0x2b647b0,
locals=0x2b647b0, flags=0x0) at Python/pythonrun.c:1330
> #29
PyRun_StringFlags (str=0x20eac33 "m5.main()", start=<value optimized
out>, globals=0x2b647b0, locals=0x2b647b0, flags=0x0) at
Python/pythonrun.c:1293
> #30 0x0000000001a82de8 in m5Main (argc=12,
argv=0x7fffffffbcd8) at build/ARM/sim/init.cc:256
> #31
0x000000000040a81b in main (argc=12, argv=0x7fffffffbcd8) at
build/ARM/sim/main.cc:57
>
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