Hi Giacomo,
Thanks for your reply. According to your guidance, I have solved my problem!
Best Wishes,
Chao
------------------ Original ------------------
From:
"gem5 users mailing list"
<gem5-users@gem5.org>;
Date: Mon, Nov 2, 2020 05:20 PM
To: "gem5 users mailing list"<gem5-users@gem5.org>;
Cc: "Mr.Rich"<605636...@qq.com>;"Giacomo
Travaglini"<giacomo.travagl...@arm.com>;
Subject: [gem5-users] Re: gem5 encountered a segmentation fault when I
running Arm FS mode
Hi,
From the command line you posted I can see you are using the following DTB
binary:
--dtb-file=./system/arm/dt/armv8_gem5_v1_1cpu.dtb
This is informing the Linux kernel there is one cpu only
(armv8_gem5_v1_1cpu.dtb). That's why you don't see the other ones.
You should change DTB binary or rely on DTB autogeneration (recommended)
Also you are using the VExpress_GEM5_V1 platform, but the bootloader in use is
targeting V2:
--bootloader=./system/arm/bootloader/arm64/boot_v2.arm64
You should use the boot.arm64. This might solve your segfault problem
Kind Regards
Giacomo
-----Original Message-----
From: 605636064--- via gem5-users <gem5-users@gem5.org>
Sent: 31 October 2020 04:24
To: gem5-users@gem5.org
Cc: 605636...@qq.com
Subject: [gem5-users] gem5 encountered a segmentation fault when I running Arm
FS mode
Hi everyone,
I have been using ARM FS mode of Gem5 recently, and I can boot the system
successfully.However, when I run my benchmark, I encounter segmentation faults.
Do you know what's going on?
My gem5 verison is 20.1.0.0 .
I compiled kernel,dtb file and bootloader following the tutorial of this
website:
http://www.gem5.org/documentation/general_docs/fullsystem/building_arm_kernel .
And I download image from:
http://dist.gem5.org/dist/current/arm/disks/linaro-minimal-aarch64.img.bz2
What I'm curious about here is that I set the number of cpus when I was running
FS mode to be three, but why did the program only recognize one ?
I can run this benchmark successfully in SE mode, so I think the benchmark
should be fine. I guess maybe the kernel, image or parameters I used are wrong.
I'm looking forward to your help! Thank you in advance !
The following are some message of gem5 during operation.
1086032148000: system.terminal: attach terminal 0
gem5 has encountered a segmentation fault!
--- BEGIN LIBC BACKTRACE ---
build/ARM_MESI_Three_Level_HTM/gem5.opt(_Z15print_backtracev+0x30)[0x5613bc840440]
build/ARM_MESI_Three_Level_HTM/gem5.opt(+0x159d7e5)[0x5613bc8547e5]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x153c0)[0x7fae9bf593c0]
build/ARM_MESI_Three_Level_HTM/gem5.opt(_ZN15TimingSimpleCPU14completeIfetchEP6Packet+0x157)[0x5613bd789fb7]
build/ARM_MESI_Three_Level_HTM/gem5.opt(_ZN10EventQueue10serviceOneEv+0x13d)[0x5613bc84853d]
build/ARM_MESI_Three_Level_HTM/gem5.opt(_Z9doSimLoopP10EventQueue+0xf8)[0x5613bc869d68]
build/ARM_MESI_Three_Level_HTM/gem5.opt(_Z8simulatem+0xaed)[0x5613bc86ab5d]
build/ARM_MESI_Three_Level_HTM/gem5.opt(+0x14adf80)[0x5613bc764f80]
build/ARM_MESI_Three_Level_HTM/gem5.opt(+0xe5f8f7)[0x5613bc1168f7]
/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x6372)[0x7fae9c07bff2]
/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x7f8)[0x7fae9c075628]
/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x6f81)[0x7fae9c07cc01]
/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x7f8)[0x7fae9c075628]
/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x6f81)[0x7fae9c07cc01]
/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x7f8)[0x7fae9c075628]
/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x6f81)[0x7fae9c07cc01]
/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x7f8)[0x7fae9c075628]
/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalCode+0x19)[0x7fae9c075b39]
/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x6e76)[0x7fae9c07caf6]
/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x7f8)[0x7fae9c075628]
/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x6f81)[0x7fae9c07cc01]
/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x7f8)[0x7fae9c075628]
/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalCode+0x19)[0x7fae9c075b39]
/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyRun_StringFlags+0x76)[0x7fae9c04e846]
build/ARM_MESI_Three_Level_HTM/gem5.opt(_Z6m5MainiPPc+0x8b)[0x5613bc85275b]
build/ARM_MESI_Three_Level_HTM/gem5.opt(main+0x4c)[0x5613bbea522c]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf3)[0x7fae9b5160b3]
build/ARM_MESI_Three_Level_HTM/gem5.opt(_start+0x2e)[0x5613bbed639e]
--- END LIBC BACKTRACE ---
./run-this.sh: line 28: 7 Segmentation fault
(core dumped) build/ARM_MESI_Three_Level_HTM/gem5.opt
configs/example/fs.py --ruby --num-cpus=3 \ --cpu-type=TimingSimpleCPU
--kernel=../system/vmlinux --machine-type=VExpress_GEM5_V1 \
--dtb-file=./system/arm/dt/armv8_gem5_v1_1cpu.dtb
--disk-image=linaro-minimal-aarch64.img \
--bootloader=./system/arm/bootloader/arm64/boot_v2.arm64
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