armv6l not supported anymore since 0.55.0?

[fgenoese]

Bug Description

Running frpc 0.55.0 or later on armv6l (Raspberry Pi) results in the following error, irrespective of the configuration:
Illegal instruction

The version 0.54.0 executes without problems. I noticed that the 0.55.0 changelog reports that "the minimum supported Go version has been updated to 1.22". Could this be part of the origin of the problem?

frpc Version

0.55.0

frps Version

0.55.0

System Architecture

linux/armv6l

Configurations

NA

Logs

Illegal instruction

Steps to reproduce

No response

Affected area

• Docs
• Installation
• Performance and Scalability
• Security
• User Experience
• Test and Release
• Developer Infrastructure
• Client Plugin
• Server Plugin
• Extensions
• Others

[fatedier]

I'm not sure, you can try compiling the code of version v0.54 with Go 1.22 first to see if the issue can be reproduced

[github-actions]

Issues go stale after 21d of inactivity. Stale issues rot after an additional 7d of inactivity and eventually close.

[fgenoese]

I'm not sure, you can try compiling the code of version v0.54 with Go 1.22 first to see if the issue can be reproduced

How would I do this?

[YtnbFirewings]

same error in asus rt ac68u, armv7l

[YtnbFirewings]

看了下log，浮点指令支持的问题
在不支持硬件浮点指令的cpu上会crash
编译时使用软件模拟浮点指令应该能解决
golang/go#61588

测试版本：0.55.1

crash所属函数runtime.check

代码片段，加粗的行为crash指令

.text:0006BA3C LDR R1, [R10,#8]
.text:0006BA40 CMP SP, R1
.text:0006BA44 BLS loc_6BF00
.text:0006BA48 STR LR, [SP,#var_38]!
.text:0006BA4C MOV R0, #0
.text:0006BA50 STR R0, [SP,#0x38+var_4]
.text:0006BA54 VMOV.F32 S0, #1.0
.text:0006BA58 VSUB.F32 S0, S0, S0
.text:0006BA5C VSTR S0, [SP,#0x38+var_8]
.text:0006BA60 VSTR S0, [SP,#0x38+var_C]
.text:0006BA64 VMOV.F64 D0, #1.0
.text:0006BA68 VSUB.F64 D0, D0, D0

log

Apr 25 10:34:35 kernel: frpc/21717: potentially unexpected fatal signal 4.
Apr 25 10:34:35 kernel: Pid: 21717, comm: frpc
Apr 25 10:34:35 kernel: CPU: 1 Tainted: P (2.6.36.4brcmarm #1)
Apr 25 10:34:35 kernel: PC is at 0x6ba54
Apr 25 10:34:35 kernel: LR is at 0x93bc8
Apr 25 10:34:35 kernel: pc : [<0006ba54>] lr : [<00093bc8>] psr: 20000010
Apr 25 10:34:35 kernel: sp : bee46cf8 ip : cafebabe fp : 00c6198c
Apr 25 10:34:35 kernel: r10: 00c62c88 r9 : 00000000 r8 : 00c63aa0
Apr 25 10:34:35 kernel: r7 : 00000014 r6 : 00000000 r5 : 00000000 r4 : 00000000
Apr 25 10:34:35 kernel: r3 : 00000000 r2 : 00000000 r1 : bee37138 r0 : 00000000
Apr 25 10:34:35 kernel: Flags: nzCv IRQs on FIQs on Mode USER_32 ISA ARM Segment user
Apr 25 10:34:35 kernel: Control: 10c53c7d Table: 0715404a DAC: 00000015

[fatedier]

@YtnbFirewings Can you try cross-compiling by yourself and post the compilation command that can run successfully?

[fatedier]

@YtnbFirewings You can try with this GOOS=linux GOARCH=arm GOARM=5

[YtnbFirewings]

@YtnbFirewings You can try with this GOOS=linux GOARCH=arm GOARM=5

I will try it later.

[YtnbFirewings]

@YtnbFirewings You can try with this GOOS=linux GOARCH=arm GOARM=5

Build 0.55.1 source code in ubuntu 22.04 with GOOS=linux GOARCH=arm GOARM=5, run in ASUS ac68u ok
frpc.tar.gz

[fatedier]

The compilation script has been modified. #4181
The linux_arm package for the next release will be compiled using GOARM=5 and should work properly.

Hard Float is separated as a standalone linux_arm_hf package, corresponding to GOARM=7.

[alexiskhoury]

Hi

Can we have the pre-compiled binary for armv6l, I don't want to go through the whole compilation process.
Thanks in advance.