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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