Go on Arm goes 💥

goarm.log

futexwakeup addr=0x547a08 returned -38
SIGSEGV: segmentation violation
PC=0x55e04 m=2 sigcode=1 addr=0x1006

goroutine 0 gp=0x14025a8 m=2 mp=0x142c808 [idle]:
runtime.futexwakeup(0x547a08, 0x1)
        runtime/os_linux.go:100 +0x6c fp=0x1445f94 sp=0x1445f68 pc=0x55e04
runtime.notewakeup(0x547a08)
        runtime/lock_futex.go:32 +0x60 fp=0x1445fa8 sp=0x1445f94 pc=0x2846c
runtime.startlockedm(0x1402128)
        runtime/proc.go:3189 +0x78 fp=0x1445fb8 sp=0x1445fa8 pc=0x62688
runtime.schedule()
        runtime/proc.go:4063 +0x74 fp=0x1445fd0 sp=0x1445fb8 pc=0x64c70
runtime.mstart1()
        runtime/proc.go:1862 +0xd8 fp=0x1445fe0 sp=0x1445fd0 pc=0x6037c
runtime.mstart0()
        runtime/proc.go:1808 +0x88 fp=0x1445ffc sp=0x1445fe0 pc=0x60288
runtime.mstart()
        runtime/asm_arm.s:210 +0x8 fp=0x1446000 sp=0x1445ffc pc=0x9a494

goroutine 1 gp=0x1402128 m=nil [chan receive, locked to thread]:
runtime.gopark(0x35e7bc, 0x1446034, 0xe, 0x7, 0x2)
        runtime/proc.go:435 +0xd8 fp=0x1428758 sp=0x1428744 pc=0x95da0
runtime.chanrecv(0x1446000, 0x0, 0x1)
        runtime/chan.go:664 +0x3a4 fp=0x1428794 sp=0x1428758 pc=0x22b5c
runtime.chanrecv1(0x1446000, 0x0)
        runtime/chan.go:506 +0x20 fp=0x14287a8 sp=0x1428794 pc=0x22788
runtime.gcenable()
        runtime/mgc.go:206 +0xd0 fp=0x14287bc sp=0x14287a8 pc=0x34540
runtime.main()
        runtime/proc.go:211 +0x13c fp=0x14287ec sp=0x14287bc pc=0x5c76c
runtime.goexit({})
        runtime/asm_arm.s:884 +0x4 fp=0x14287ec sp=0x14287ec pc=0x9c0bc

goroutine 2 gp=0x14026c8 m=nil [runnable]:
runtime.forcegchelper()
        runtime/proc.go:339 fp=0x1428fec sp=0x1428fec pc=0x5cc40
runtime.goexit({})
        runtime/asm_arm.s:884 +0x4 fp=0x1428fec sp=0x1428fec pc=0x9c0bc
created by runtime.init.6 in goroutine 1
        runtime/proc.go:336 +0x1c

goroutine 3 gp=0x14027e8 m=nil [runnable]:
runtime.gcenable.gowrap1()
        runtime/mgc.go:204 fp=0x14297ec sp=0x14297ec pc=0x345e0
runtime.goexit({})
        runtime/asm_arm.s:884 +0x4 fp=0x14297ec sp=0x14297ec pc=0x9c0bc
created by runtime.gcenable in goroutine 1
        runtime/mgc.go:204 +0x74

goroutine 4 gp=0x1402908 m=nil [runnable]:
runtime.gcenable.gowrap2()
        runtime/mgc.go:205 fp=0x1429fec sp=0x1429fec pc=0x3458c
runtime.goexit({})
        runtime/asm_arm.s:884 +0x4 fp=0x1429fec sp=0x1429fec pc=0x9c0bc
created by runtime.gcenable in goroutine 1
        runtime/mgc.go:205 +0xbc

trap    0xe
error   0x817
oldmask 0x0
r0      0x1006
r1      0x1006
r2      0x0
r3      0x1
r4      0x27
r5      0x0
r6      0x1
r7      0x4
r8      0x55340e
r9      0x0
r10     0x14025a8
fp      0xffffffa8
ip      0xa
sp      0x1445f68
lr      0x29184
pc      0x55e04
cpsr    0x60000010
fault   0x1006

TL;DR I had to enable CONFIG_COMPAT_32BIT_TIME for futexes to work.

I filed golang/go#75133 and a PR (linked to the issue) to implement the new syscall in Go.

In https://gist.github.com/orangecms/7f985ef19398544114599430b79868f7 I summarize how it went.