Hi all, I've added a series of DPRINTFs into the coherence protocol (GPU_VIPER) and its been working ok, up until this morning when I added a bunch all at once and it started segfaulting. This only happens if I have my debug flag enabled, otherwise the program runs to completion (this is syscall emulation mode, apu_se.py in /examples)
I've been trying to think of a way to figure out what the problem is using some semblance of thought but I haven't been able to do anything so I'm going to binary search my way through the files commenting out all of my prints. In the meantime, if anyone could explain how I might use this LIBC backtrace, either in this situation or the future, that would be amazing. Cheers, Dan Gerzhoy gem5 has encountered a segmentation fault --- BEGIN LIBC BACKTRACE --- build/GCN3_X86/gem5.opt(_Z15print_backtracev+0x28)[0x1a06bc8] build/GCN3_X86/gem5.opt[0x1a19783] /lib/x86_64-linux-gnu/libpthread.so.0(+0x11390)[0x7f6d0bb39390] build/GCN3_X86/gem5.opt(_ZlsRSoRK9MachineID+0x1c)[0x199fcac] build/GCN3_X86/gem5.opt(_Z8ccprintfIJm9MachineID11TriggerType15Directory_StateEEvRSoPKcDpRKT_+0xebb)[0x19c2c7b] build/GCN3_X86/gem5.opt(_ZN5Trace6Logger7dprintfIJm9MachineID11TriggerType15Directory_StateEEEvmRKNSt7__cxx1112basic_strinzgIcSt11char_traitsIcESaIcEEEPKcDpRKT_+0xcd)[0x19c316d] build/GCN3_X86/gem5.opt(_ZN20Directory_Controller6wakeupEv+0x7a0)[0x1957130] build/GCN3_X86/gem5.opt(_ZN10EventQueue10serviceOneEv+0xc5)[0x1a0d3b5] build/GCN3_X86/gem5.opt(_Z9doSimLoopP10EventQueue+0x50)[0x1a25e40] build/GCN3_X86/gem5.opt(_Z8simulatem+0xd1b)[0x1a26f2b] build/GCN3_X86/gem5.opt[0x9bf1aa] build/GCN3_X86/gem5.opt[0x99d167] /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x7852)[0x7f6d0bdf67b2] /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x85c)[0x7f6d0bf2d11c] /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x6ffd)[0x7f6d0bdf5f5d] /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x85c)[0x7f6d0bf2d11c] /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalCode+0x19)[0x7f6d0bdeede9] /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x613b)[0x7f6d0bdf509b] /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x85c)[0x7f6d0bf2d11c] /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x6ffd)[0x7f6d0bdf5f5d] /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x85c)[0x7f6d0bf2d11c] /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalCode+0x19)[0x7f6d0bdeede9] /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyRun_StringFlags+0x76)[0x7f6d0be69236] build/GCN3_X86/gem5.opt(_Z6m5MainiPPc+0x8f)[0x1a1813f] build/GCN3_X86/gem5.opt(main+0x33)[0x8d4dd3] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf0)[0x7f6d0a52c830] build/GCN3_X86/gem5.opt(_start+0x29)[0x8f9dd9] --- END LIBC BACKTRACE --- Failed to execute default signal handler! _______________________________________________ gem5-dev mailing list gem5-dev@gem5.org http://m5sim.org/mailman/listinfo/gem5-dev
