'gem5 has encountered a segmentation fault!' for modifying MESI_Two_Level-L1cache.sm protocol.

[Jagadeesh-pradhani]

MESI_Two_Level-L1cache.sm
MESI_Two_Level-L1cache.zip

output.out
output.zip

I have modified the SM file for the functionality as follows:
For a multicore simulation, when theres a miss in L1 cache the controller will check the for the cache block in neibour core's cache, if thats a hit then it will fetch that block from neibour else it will go for L2 cache.

Command line:

build/X86_MESI_Two_Level/gem5.opt  --debug-flags=Custom,RubySlicc --debug-file=output.out configs/deprecated/example/se.py --cmd="/home/jagadeesh/gem5/SPEC.Small/mcf/mcf;/home/jagadeesh/gem5/SPEC.Small/dct/dct"  --options="" -n 2 --num-dirs=2 --ruby --network=garnet --topology=Mesh_XY --mesh-rows=1 --link-latency=1 --router-latency=1 --cpu-type=O3CPU --l1d_size=32kB --l1i_size=32kB --l2_size=4MB --mem-size=512MB --l1d_assoc=2 --l1i_assoc=2 --l2_assoc=8

Error:

gem5 version 23.1.0.0
gem5 compiled Sep  9 2024 03:37:17
gem5 started Sep 12 2024 14:42:24
gem5 executing on jagadeesh, pid 6130
command line: build/X86_MESI_Two_Level/gem5.opt --debug-flags=Custom,RubySlicc --debug-file=output.out configs/deprecated/example/se.py '--cmd=/home/jagadeesh/gem5/SPEC.Small/mcf/mcf;/home/jagadeesh/gem5/SPEC.Small/dct/dct' --options= -n 2 --num-dirs=2 --ruby --network=garnet --topology=Mesh_XY --mesh-rows=1 --link-latency=1 --router-latency=1 --cpu-type=O3CPU --l1d_size=32kB --l1i_size=32kB --l2_size=4MB --mem-size=512MB --l1d_assoc=2 --l1i_assoc=2 --l2_assoc=8

warn: The se.py script is deprecated. It will be removed in future releases of  gem5.
hello
hello
cntrls_per_router: 2, remainder: 1, 2
Global frequency set at 1000000000000 ticks per second
src/mem/dram_interface.cc:690: warn: DRAM device capacity (8192 Mbytes) does not match the address range assigned (256 Mbytes)
src/mem/dram_interface.cc:690: warn: DRAM device capacity (8192 Mbytes) does not match the address range assigned (256 Mbytes)
src/base/statistics.hh:279: warn: One of the stats is a legacy stat. Legacy stat is a stat that does not belong to any statistics::Group. Legacy stat is deprecated.
src/base/statistics.hh:279: warn: One of the stats is a legacy stat. Legacy stat is a stat that does not belong to any statistics::Group. Legacy stat is deprecated.
src/base/statistics.hh:279: warn: One of the stats is a legacy stat. Legacy stat is a stat that does not belong to any statistics::Group. Legacy stat is deprecated.
src/base/statistics.hh:279: warn: One of the stats is a legacy stat. Legacy stat is a stat that does not belong to any statistics::Group. Legacy stat is deprecated.
src/mem/ruby/network/garnet/GarnetNetwork.cc:107: info: Garnet version 3.0
system.remote_gdb: Listening for connections on port 7000
**** REAL SIMULATION ****
src/sim/simulate.cc:199: info: Entering event queue @ 0.  Starting simulation...
src/mem/ruby/system/Sequencer.cc:668: warn: Replacement policy updates recently became the responsibility of SLICC state machines. Make sure to setMRU() near callbacks in .sm files!
gem5 has encountered a segmentation fault!

--- BEGIN LIBC BACKTRACE ---
build/X86_MESI_Two_Level/gem5.opt(_ZN4gem515print_backtraceEv+0x30)[0x6205936b5c50]
build/X86_MESI_Two_Level/gem5.opt(+0x15fc8e5)[0x6205936db8e5]
/lib/x86_64-linux-gnu/libc.so.6(+0x42520)[0x79a492c42520]
build/X86_MESI_Two_Level/gem5.opt(_ZNK4gem54ruby13MessageBuffer4peekEv+0x3b)[0x620593fd2d1b]
build/X86_MESI_Two_Level/gem5.opt(_ZN4gem54ruby18L1Cache_Controller22ne_nsendAckToRequestorERPNS0_11L1Cache_TBEERPNS0_13L1Cache_EntryEm+0x44)[0x6205940c35d4]
build/X86_MESI_Two_Level/gem5.opt(_ZN4gem54ruby18L1Cache_Controller18doTransitionWorkerENS0_13L1Cache_EventENS0_13L1Cache_StateERS3_RPNS0_11L1Cache_TBEERPNS0_13L1Cache_EntryEm+0x295)[0x6205940d16a5]
build/X86_MESI_Two_Level/gem5.opt(_ZN4gem54ruby18L1Cache_Controller12doTransitionENS0_13L1Cache_EventEPNS0_13L1Cache_EntryEPNS0_11L1Cache_TBEEm+0xa2)[0x6205940d2aa2]
build/X86_MESI_Two_Level/gem5.opt(_ZN4gem54ruby18L1Cache_Controller6wakeupEv+0x1544)[0x6205940e02f4]
build/X86_MESI_Two_Level/gem5.opt(+0x1e34e0e)[0x620593f13e0e]
build/X86_MESI_Two_Level/gem5.opt(_ZN4gem510EventQueue10serviceOneEv+0xc2)[0x6205936cbda2]
build/X86_MESI_Two_Level/gem5.opt(_ZN4gem59doSimLoopEPNS_10EventQueueE+0x68)[0x6205936f6858]
build/X86_MESI_Two_Level/gem5.opt(_ZN4gem58simulateEm+0x283)[0x6205936f6e53]
build/X86_MESI_Two_Level/gem5.opt(+0xb300d0)[0x620592c0f0d0]
build/X86_MESI_Two_Level/gem5.opt(+0xa32e44)[0x620592b11e44]
/lib/x86_64-linux-gnu/libpython3.10.so.1.0(+0x128023)[0x79a493f28023]
/lib/x86_64-linux-gnu/libpython3.10.so.1.0(_PyObject_Call+0x5c)[0x79a493ee1fec]
/lib/x86_64-linux-gnu/libpython3.10.so.1.0(_PyEval_EvalFrameDefault+0x4b16)[0x79a493e76776]
/lib/x86_64-linux-gnu/libpython3.10.so.1.0(+0x1c23af)[0x79a493fc23af]
/lib/x86_64-linux-gnu/libpython3.10.so.1.0(_PyEval_EvalFrameDefault+0x9d68)[0x79a493e7b9c8]
/lib/x86_64-linux-gnu/libpython3.10.so.1.0(+0x1c23af)[0x79a493fc23af]
/lib/x86_64-linux-gnu/libpython3.10.so.1.0(_PyEval_EvalFrameDefault+0x69de)[0x79a493e7863e]
/lib/x86_64-linux-gnu/libpython3.10.so.1.0(+0x1c23af)[0x79a493fc23af]
/lib/x86_64-linux-gnu/libpython3.10.so.1.0(_PyEval_EvalFrameDefault+0x9d68)[0x79a493e7b9c8]
/lib/x86_64-linux-gnu/libpython3.10.so.1.0(+0x1c23af)[0x79a493fc23af]
/lib/x86_64-linux-gnu/libpython3.10.so.1.0(PyEval_EvalCode+0xbe)[0x79a493fbd3de]
/lib/x86_64-linux-gnu/libpython3.10.so.1.0(+0x1bd96d)[0x79a493fbd96d]
/lib/x86_64-linux-gnu/libpython3.10.so.1.0(+0x1287b3)[0x79a493f287b3]
/lib/x86_64-linux-gnu/libpython3.10.so.1.0(_PyEval_EvalFrameDefault+0x69de)[0x79a493e7863e]
/lib/x86_64-linux-gnu/libpython3.10.so.1.0(+0x1c23af)[0x79a493fc23af]
build/X86_MESI_Two_Level/gem5.opt(+0xb0acb7)[0x620592be9cb7]
build/X86_MESI_Two_Level/gem5.opt(main+0x213)[0x620592abce33]
/lib/x86_64-linux-gnu/libc.so.6(+0x29d90)[0x79a492c29d90]
--- END LIBC BACKTRACE ---
For more info on how to address this issue, please visit https://www.gem5.org/documentation/general_docs/common-errors/ 

Segmentation fault (core dumped)