x86_64 fs.py Linux kernel boot fails at PS2Mouse::recv

[cirosantilli2]

--- BEGIN LIBC BACKTRACE ---                                                                                                                            
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(_Z15print_backtracev+0x2c)[0x55d365b936dc]
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(_Z12abortHandleri+0x4a)[0x55d365ba90ba]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x13150)[0x7f1913cd1150]                                          
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0xcb)[0x7f19123030bb]                                            
/lib/x86_64-linux-gnu/libc.so.6(abort+0x16d)[0x7f1912304f5d]                                                                            
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(+0x3f9dff)[0x55d365462dff]                                   
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN8PS2Mouse4recvERKSt6vectorIhSaIhEE+0x2261)[0x55d365c690a1]
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN9PS2Device9hostWriteEh+0x131)[0x55d365c622a1]       
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN6X86ISA5I80425writeEP6Packet+0x17bc)[0x55d3656ee56c]
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN7PioPort10recvAtomicEP6Packet+0x6e)[0x55d3657369ee]           
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN15NoncoherentXBar10recvAtomicEP6Packets+0x185)[0x55d365d48975]     
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN6Bridge15BridgeSlavePort10recvAtomicEP6Packet+0x36)[0x55d365d20416]
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN12CoherentXBar10recvAtomicEP6Packets+0x53a)[0x55d365d2b9ba]      
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN15AtomicSimpleCPU8writeMemEPhjm5FlagsImEPm+0x53e)[0x55d365c3085e] 
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN17SimpleExecContext8writeMemEPhjm5FlagsImEPm+0x29)[0x55d365c3d9c9]                 
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZNK10X86ISAInst2St7executeEP11ExecContextPN5Trace10InstRecordE+0x275)[0x55d3661cd925]
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN15AtomicSimpleCPU4tickEv+0x3a1)[0x55d365c2f861] 
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN10EventQueue10serviceOneEv+0xd9)[0x55d365b9b2e9]
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(_Z9doSimLoopP10EventQueue+0x87)[0x55d365bb68a7]
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(_Z8simulatem+0xcaa)[0x55d365bb78ea]
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(+0x12433bb)[0x55d3662ac3bb]
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(+0x8cab19)[0x55d365933b19]
/usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x6e54)[0x7f1913f917e4]
/usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x7d8)[0x7f19140bbb88]
/usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x5bf0)[0x7f1913f90580]
/usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x7d8)[0x7f19140bbb88]
/usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x5bf0)[0x7f1913f90580]
/usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x7d8)[0x7f19140bbb88]
/usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x5bf0)[0x7f1913f90580]
/usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x7d8)[0x7f19140bbb88]
/usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalCode+0x19)[0x7f1913f8a7f9]
/usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x63a3)[0x7f1913f90d33]
--- END LIBC BACKTRACE ---

The last meaningful level of the backtrace seems to be:

c++filt _ZN8PS2Mouse4recvERKSt6vectorIhSaIhEE

which gives:

PS2Mouse::recv(std::vector<unsigned char, std::allocator<unsigned char> > const&)

[cirosantilli2]

Workaround: disable the PS2 mouse on the Linux kernel config:

# CONFIG_INPUT_MOUSE is not set
# CONFIG_INPUT_MOUSEDEV_PSAUX is not set

There is also a related patch at: https://gem5-review.googlesource.com/c/public/gem5/+/7301