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Golang Linux to use new syscalls
Raw
go-syscall-catchup.md

What is this?

Golang on Linux was not yet using the new year 2038 proof syscalls on 32-bit systems, leading to crashes on >=5.0 kernels without 32-bit compat. I filed an issue and went on to implement that.

Reference commits where Linux added the new 64-bit syscalls:

This has been released in Linux v5.0.

See also:

Relevant Go resources:

How about Rust? 🦀

Other people are already on it, see rust-lang/libc#3175 and related PRs/issues.

Strategy

The Go runtime is implemented per platform. I have set up https://github.com/platform-system-interface/gotest/ for quick testing.

To compare the syscall numbers between Linux and Go, I ran:

  • Linux: grep sys_futex arch/*/**/syscall*.tbl
  • Go: grep runtime.futex src/sys_linux*.s

Note that Linux does not have the same structure for every arch. E.g. arch/riscv/ has no .tbl, using the generic scripts/syscall.tbl, and arm has the .tbl files in tools/ rather than kernel/syscalls/. New architectures are supposed to use the scripts/syscall.tbl.

An incosistency leads to confusion with the naming though. In scripts/syscall.tbl, it is:

98   time32   futex          sys_futex_time32
98   64       futex          sys_futex
...
422  32       futex_time64   sys_futex

I looked at the last column where the names start with sys_, because the defines in Go are prefixed with SYS_. However, for consistency within Go, I was asked to use the same names as in golang.org/x/sys/unix/zsysnum_linux_386.go.

The timespec structs are coming from include/uapi/linux/time_types.h:

struct __kernel_timespec {
  __kernel_time64_t    tv_sec;
  long long            tv_nsec;
};

struct __kernel_old_timespec {
  __kernel_old_time_t  tv_sec;
  long                 tv_nsec;
};

For the type definitions, see include/uapi/asm-generic/posix_types.h:

typedef __kernel_long_t __kernel_old_time_t;
typedef long long __kernel_time64_t;

Internally, the kernel uses (sorta!) equivalent structs:

include/linux/time64.h:

struct timespec64 {
  time64_t  tv_sec;
  long      tv_nsec;
};

Note the long here. How long is a long? In C, it depends!

include/vdso/time32.h:

struct old_timespec32 {
  old_time32_t  tv_sec;
  s32           tv_nsec;
};

I was also asked to cache the syscall probing using an atomic. Before I figured that I need to use the internal implementation, I ran into another crash.

Testing

initramfs

I use a minimal u-root environment for testing. Build instructions for the u-root initramfs shall follow, too.

Pre-5.0 Linux

Below are my defconfig and build/run scripts for Linux 4.20.7 in QEMU Arm.

https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-4.20.7.tar.xz

Linux 6.x

Using Buildroot:

make qemu_arm_vexpress_defconfig
make -j7

And to drop the 32-bit compat, run make linux-menuconfig, disable KCONFIG_, run make -j7 again.

QEMU:

qemu-system-arm -M vexpress-a9 -nographic \
  -kernel output/images/zImage \
  -dtb output/images/vexpress-v2p-ca9.dtb \
  -initrd /tmp/u-root-godama-armv7-mini.cpio.xz \
  -append "console=ttyAMA0"
Raw
goruntime.md

This here happens when using sync/atomic instead of internal/runtime/atomic within the Go runtime (just use the internal things!):

runtime: newstack at sync/atomic.(*Bool).Load+0x40 sp=0x835730 stack=[0x835000, 0x835800]
        morebuf={pc:0x5e430 sp:0x835730 lr:0x0}
        sched={pc:0xa6910 sp:0x835730 lr:0x5e430 ctxt:0x0}
runtime.futex(0x698130, 0x80, 0x0, 0x0, 0x0, 0x0)
        runtime/os_linux_futex32.go:31 +0x10 fp=0x835758 sp=0x835730 pc=0x5e430
runtime.futexsleep(0x698130, 0x0, 0xffffffffffffffff)
        runtime/os_linux.go:73 +0x44 fp=0x835788 sp=0x835758 pc=0x5caf0
runtime.notetsleep_internal(0x698130, 0xffffffffffffffff)
        runtime/lock_futex.go:70 +0x290 fp=0x8357b0 sp=0x835788 pc=0x2bc94
runtime.notetsleepg(0x698130, 0xffffffffffffffff)
        runtime/lock_futex.go:124 +0x40 fp=0x8357c8 sp=0x8357b0 pc=0x2bd94
os/signal.signal_recv()
        runtime/sigqueue.go:152 +0xdc fp=0x8357e0 sp=0x8357c8 pc=0x9f160
os/signal.loop()
        os/signal/signal_unix.go:23 +0x14 fp=0x8357ec sp=0x8357e0 pc=0x1dc69c
runtime.goexit({})
        runtime/asm_arm.s:873 +0x4 fp=0x8357ec sp=0x8357ec pc=0xa32dc
created by os/signal.Notify.func1.1 in goroutine 1
        os/signal/signal.go:152 +0x28
fatal error: runtime: stack split at bad time

runtime stack:
runtime.throw({0x40cd53, 0x20})
        runtime/panic.go:1227 +0x34 fp=0x84bf44 sp=0x84bf30 pc=0x9d1d8
runtime.newstack()
        runtime/stack.go:1048 +0xaa4 fp=0x84bfdc sp=0x84bf44 pc=0x80a24
runtime.morestack()
        runtime/asm_arm.s:406 +0x60 fp=0x84bfe0 sp=0x84bfdc pc=0xa1cf0

goroutine 8 gp=0x803448 m=3 mp=0x837008 [syscall]:
runtime.futex(0x698130, 0x80, 0x0, 0x0, 0x0, 0x0)
        runtime/os_linux_futex32.go:31 +0x10 fp=0x835758 sp=0x835730 pc=0x5e430
runtime.futexsleep(0x698130, 0x0, 0xffffffffffffffff)
        runtime/os_linux.go:73 +0x44 fp=0x835788 sp=0x835758 pc=0x5caf0
runtime.notetsleep_internal(0x698130, 0xffffffffffffffff)
        runtime/lock_futex.go:70 +0x290 fp=0x8357b0 sp=0x835788 pc=0x2bc94
runtime.notetsleepg(0x698130, 0xffffffffffffffff)
        runtime/lock_futex.go:124 +0x40 fp=0x8357c8 sp=0x8357b0 pc=0x2bd94
os/signal.signal_recv()
        runtime/sigqueue.go:152 +0xdc fp=0x8357e0 sp=0x8357c8 pc=0x9f160
os/signal.loop()
        os/signal/signal_unix.go:23 +0x14 fp=0x8357ec sp=0x8357e0 pc=0x1dc69c
runtime.goexit({})
        runtime/asm_arm.s:873 +0x4 fp=0x8357ec sp=0x8357ec pc=0xa32dc
created by os/signal.Notify.func1.1 in goroutine 1
        os/signal/signal.go:152 +0x28

goroutine 1 gp=0x802128 m=nil [runnable]:
runtime.mapassign_faststr(0x399688, 0x8e62a0, {0x404715, 0x14})
        internal/runtime/maps/runtime_faststr.go:263 +0x67c fp=0x8e3b7c sp=0x8e3b7c pc=0x21728
runtime.initMetrics()
        runtime/metrics.go:89 +0x134c fp=0x8e3bec sp=0x8e3b7c pc=0x37564
internal/godebug.registerMetric({0x85c380, 0x33}, 0x816dd8)
        runtime/metrics.go:574 +0x18 fp=0x8e3c18 sp=0x8e3bec pc=0x9bb1c
internal/godebug.(*Setting).register(0x85e348)
        internal/godebug/godebug.go:130 +0xe8 fp=0x8e3c4c sp=0x8e3c18 pc=0xdbe34
internal/godebug.(*Setting).register-fm()
        <autogenerated>:1 +0x1c fp=0x8e3c54 sp=0x8e3c4c pc=0xdca88
sync.(*Once).doSlow(0x8283e4, 0x8e3ca4)
        sync/once.go:78 +0xa8 fp=0x8e3c80 sp=0x8e3c54 pc=0xbd678
sync.(*Once).Do(0x8283e4, 0x8e3ca4)
        sync/once.go:69 +0x40 fp=0x8e3c8c sp=0x8e3c80 pc=0xbd5c0
internal/godebug.(*Setting).IncNonDefault(0x85e348)
        internal/godebug/godebug.go:122 +0x3c fp=0x8e3cac sp=0x8e3c8c pc=0xdbd0c
time.syncTimer(0x853a40)
        time/sleep.go:26 +0x4c fp=0x8e3cbc sp=0x8e3cac pc=0xea1d4
time.NewTicker(0xfe502a)
        time/tick.go:44 +0x94 fp=0x8e3cf0 sp=0x8e3cbc pc=0xea8c8
github.com/charmbracelet/bubbletea.(*standardRenderer).start(0x8dad20)
        github.com/charmbracelet/bubbletea/standard_renderer.go:75 +0x54 fp=0x8e3d00 sp=0x8e3cf0 pc=0x208540
github.com/charmbracelet/bubbletea.(*Program).Run(0x86acc0)
        github.com/charmbracelet/bubbletea/tea.go:484 +0x4f4 fp=0x8e3dd4 sp=0x8e3d00 pc=0x20c670
github.com/knz/bubbline.(*Editor).GetLine(0x80cd10)
        github.com/knz/bubbline/getline.go:74 +0x1d4 fp=0x8e3e2c sp=0x8e3dd4 pc=0x2406c4
github.com/u-root/u-root/cmds/core/gosh.runInteractive(0x8b6828, 0x8d6008, {0x450dec, 0x8162c0}, {0x450dec, 0x8162c8})
        github.com/u-root/u-root/cmds/core/gosh/completer.go:117 +0x254 fp=0x8e3eb8 sp=0x8e3e2c pc=0x28dd74
github.com/u-root/u-root/cmds/core/gosh.run({0x450e7c, 0x8162b8}, {0x450dec, 0x8162c0}, {0x450dec, 0x8162c8}, {0x0, 0x0}, {0x8162e8, 0x0, ...})
        github.com/u-root/u-root/cmds/core/gosh/gosh.go:56 +0x15c fp=0x8e3eec sp=0x8e3eb8 pc=0x28ef00
github.com/u-root/u-root/cmds/core/gosh.registeredMain()
        github.com/u-root/u-root/cmds/core/gosh/gosh.go:34 +0x84 fp=0x8e3f34 sp=0x8e3eec pc=0x28ecfc
bb.u-root.com/bb/pkg/bbmain.Run({0x80e606, 0x4})
        bb.u-root.com/bb/pkg/bbmain/register.go:77 +0x90 fp=0x8e3f70 sp=0x8e3f34 pc=0x12b318
main.run()
        bb.u-root.com/bb/main.go:117 +0x50 fp=0x8e3fa4 sp=0x8e3f70 pc=0x34cc24
main.main()
        bb.u-root.com/bb/main.go:144 +0x88 fp=0x8e3fb8 sp=0x8e3fa4 pc=0x34cfc0
runtime.main()
        runtime/proc.go:289 +0x2bc fp=0x8e3fec sp=0x8e3fb8 pc=0x631c4
runtime.goexit({})
        runtime/asm_arm.s:873 +0x4 fp=0x8e3fec sp=0x8e3fec pc=0xa32dc

goroutine 2 gp=0x8026c8 m=nil [force gc (idle)]:
runtime.gopark(0x42c788, 0x68aa70, 0x11, 0xa, 0x1)
        runtime/proc.go:464 +0xd8 fp=0x832fc0 sp=0x832fac pc=0x9d2e8
runtime.goparkunlock(0x68aa70, 0x11, 0xa, 0x1)
        runtime/proc.go:470 +0x3c fp=0x832fd4 sp=0x832fc0 pc=0x63748
runtime.forcegchelper()
        runtime/proc.go:377 +0xe0 fp=0x832fec sp=0x832fd4 pc=0x63614
runtime.goexit({})
        runtime/asm_arm.s:873 +0x4 fp=0x832fec sp=0x832fec pc=0xa32dc
created by runtime.init.6 in goroutine 1
        runtime/proc.go:365 +0x1c

goroutine 3 gp=0x8027e8 m=nil [GC sweep wait]:
runtime.gopark(0x42c788, 0x68acb0, 0xc, 0x9, 0x1)
        runtime/proc.go:464 +0xd8 fp=0x8337b4 sp=0x8337a0 pc=0x9d2e8
runtime.goparkunlock(0x68acb0, 0xc, 0x9, 0x1)
        runtime/proc.go:470 +0x3c fp=0x8337c8 sp=0x8337b4 pc=0x63748
runtime.bgsweep(0x850000)
        runtime/mgcsweep.go:279 +0xa8 fp=0x8337e4 sp=0x8337c8 pc=0x4a54c
runtime.gcenable.gowrap1()
        runtime/mgc.go:212 +0x1c fp=0x8337ec sp=0x8337e4 pc=0x3a418
runtime.goexit({})
        runtime/asm_arm.s:873 +0x4 fp=0x8337ec sp=0x8337ec pc=0xa32dc
created by runtime.gcenable in goroutine 1
        runtime/mgc.go:212 +0x74

goroutine 4 gp=0x802908 m=nil [GC scavenge wait]:
runtime.gopark(0x42c788, 0x68b150, 0xd, 0xa, 0x2)
        runtime/proc.go:464 +0xd8 fp=0x833fa4 sp=0x833f90 pc=0x9d2e8
runtime.goparkunlock(0x68b150, 0xd, 0xa, 0x2)
        runtime/proc.go:470 +0x3c fp=0x833fb8 sp=0x833fa4 pc=0x63748
runtime.(*scavengerState).park(0x68b150)
        runtime/mgcscavenge.go:425 +0x58 fp=0x833fc8 sp=0x833fb8 pc=0x47650
runtime.bgscavenge(0x850000)
        runtime/mgcscavenge.go:653 +0x3c fp=0x833fe4 sp=0x833fc8 pc=0x47d28
runtime.gcenable.gowrap2()
        runtime/mgc.go:213 +0x1c fp=0x833fec sp=0x833fe4 pc=0x3a3ec
runtime.goexit({})
        runtime/asm_arm.s:873 +0x4 fp=0x833fec sp=0x833fec pc=0xa32dc
created by runtime.gcenable in goroutine 1
        runtime/mgc.go:213 +0xbc

goroutine 5 gp=0x802c68 m=nil [finalizer wait]:
runtime.gopark(0x42c60c, 0x697b90, 0x10, 0xa, 0x1)
        runtime/proc.go:464 +0xd8 fp=0x832790 sp=0x83277c pc=0x9d2e8
runtime.runFinalizers()
        runtime/mfinal.go:210 +0xf4 fp=0x8327ec sp=0x832790 pc=0x39184
runtime.goexit({})
        runtime/asm_arm.s:873 +0x4 fp=0x8327ec sp=0x8327ec pc=0xa32dc
created by runtime.createfing in goroutine 1
        runtime/mfinal.go:172 +0x5c

goroutine 6 gp=0x802ea8 m=nil [cleanup wait]:
runtime.gopark(0x42c788, 0x68b2a8, 0x2e, 0xa, 0x1)
        runtime/proc.go:464 +0xd8 fp=0x83479c sp=0x834788 pc=0x9d2e8
runtime.goparkunlock(0x68b2a8, 0x2e, 0xa, 0x1)
        runtime/proc.go:470 +0x3c fp=0x8347b0 sp=0x83479c pc=0x63748
runtime.(*cleanupQueue).dequeue(0x68b248)
        runtime/mcleanup.go:439 +0x100 fp=0x8347c8 sp=0x8347b0 pc=0x34cf0
runtime.runCleanups()
        runtime/mcleanup.go:635 +0x78 fp=0x8347ec sp=0x8347c8 pc=0x355ec
runtime.goexit({})
        runtime/asm_arm.s:873 +0x4 fp=0x8347ec sp=0x8347ec pc=0xa32dc
created by runtime.(*cleanupQueue).createGs in goroutine 1
        runtime/mcleanup.go:589 +0xd8

goroutine 7 gp=0x8030e8 m=nil [select, locked to thread]:
runtime.gopark(0x42c7b8, 0x0, 0x9, 0x3, 0x1)
        runtime/proc.go:464 +0xd8 fp=0x834ed0 sp=0x834ebc pc=0x9d2e8
runtime.selectgo(0x834fd8, 0x834fb8, 0x0, 0x0, 0x2, 0x1)
        runtime/select.go:351 +0xc9c fp=0x834f90 sp=0x834ed0 pc=0x791a4
runtime.ensureSigM.func1()
        runtime/signal_unix.go:1085 +0x144 fp=0x834fec sp=0x834f90 pc=0x981dc
runtime.goexit({})
        runtime/asm_arm.s:873 +0x4 fp=0x834fec sp=0x834fec pc=0xa32dc
created by runtime.ensureSigM in goroutine 1
        runtime/signal_unix.go:1068 +0xf8

goroutine 9 gp=0x803568 m=nil [chan receive]:
runtime.gopark(0x42c5e8, 0x8538b8, 0xe, 0x7, 0x2)
        runtime/proc.go:464 +0xd8 fp=0x835f88 sp=0x835f74 pc=0x9d2e8
runtime.chanrecv(0x853880, 0x0, 0x1)
        runtime/chan.go:667 +0x3c4 fp=0x835fc4 sp=0x835f88 pc=0x25dec
runtime.chanrecv1(0x853880, 0x0)
        runtime/chan.go:509 +0x20 fp=0x835fd8 sp=0x835fc4 pc=0x259f8
github.com/u-root/u-root/cmds/core/gosh.runInteractive.func1(0x853880)
        github.com/u-root/u-root/cmds/core/gosh/completer.go:107 +0x24 fp=0x835fe4 sp=0x835fd8 pc=0x28f920
github.com/u-root/u-root/cmds/core/gosh.runInteractive.gowrap1()
        github.com/u-root/u-root/cmds/core/gosh/completer.go:109 +0x24 fp=0x835fec sp=0x835fe4 pc=0x28e368
runtime.goexit({})
        runtime/asm_arm.s:873 +0x4 fp=0x835fec sp=0x835fec pc=0xa32dc
created by github.com/u-root/u-root/cmds/core/gosh.runInteractive in goroutine 1
        github.com/u-root/u-root/cmds/core/gosh/completer.go:105 +0x19c

goroutine 10 gp=0x803688 m=nil [select]:
runtime.gopark(0x42c7b8, 0x0, 0x9, 0x3, 0x1)
        runtime/proc.go:464 +0xd8 fp=0x82e6dc sp=0x82e6c8 pc=0x9d2e8
runtime.selectgo(0x82e7d0, 0x82e7c0, 0x0, 0x0, 0x2, 0x1)
        runtime/select.go:351 +0xc9c fp=0x82e79c sp=0x82e6dc pc=0x791a4
github.com/knz/bubbline.(*Editor).GetLine.func1()
        github.com/knz/bubbline/getline.go:65 +0xa8 fp=0x82e7ec sp=0x82e79c pc=0x2408ec
runtime.goexitinit: 1970/04/09 16:51:20 Waiting for orphaned children
init: 1970/04/08 04:32:48 All commands exited
init: 1970/04/15 17:11:36 Syncing filesystems
init: 1970/04/15 17:11:36 Exiting...
Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000000
CPU: 0 UID: 0 PID: 64 Comm: init Not tainted 6.12.27 #2
Hardware name: ARM-Versatile Express
Call trace:
 unwind_backtrace from show_stack+0x10/0x14
 show_stack from dump_stack_lvl+0x54/0x68
 dump_stack_lvl from panic+0x10c/0x350
 panic from make_task_dead+0x0/0x16c
---[ end Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000000 ]---
Raw
linux-4.20.7-pi2minidefconfig
# CONFIG_LOCALVERSION_AUTO is not set
CONFIG_SYSVIPC=y
CONFIG_NO_HZ_IDLE=y
CONFIG_HIGH_RES_TIMERS=y
CONFIG_LOG_BUF_SHIFT=14
CONFIG_CGROUPS=y
CONFIG_MEMCG=y
CONFIG_BLK_CGROUP=y
CONFIG_CGROUP_SCHED=y
CONFIG_CGROUP_PIDS=y
CONFIG_CGROUP_RDMA=y
CONFIG_CGROUP_FREEZER=y
CONFIG_CGROUP_DEVICE=y
CONFIG_USER_NS=y
CONFIG_BLK_DEV_INITRD=y
# CONFIG_RD_BZIP2 is not set
# CONFIG_RD_LZMA is not set
# CONFIG_RD_LZO is not set
# CONFIG_RD_LZ4 is not set
CONFIG_SLAB=y
CONFIG_ARCH_VIRT=y
CONFIG_ARCH_BCM=y
CONFIG_ARCH_BCM2835=y
CONFIG_ARM_THUMBEE=y
CONFIG_PL310_ERRATA_588369=y
CONFIG_PL310_ERRATA_727915=y
CONFIG_PL310_ERRATA_753970=y
CONFIG_PL310_ERRATA_769419=y
CONFIG_ARM_ERRATA_430973=y
CONFIG_ARM_ERRATA_720789=y
CONFIG_ARM_ERRATA_754322=y
CONFIG_ARM_ERRATA_775420=y
CONFIG_ARM_ERRATA_773022=y
CONFIG_ARM_ERRATA_818325_852422=y
CONFIG_ARM_ERRATA_821420=y
CONFIG_ARM_ERRATA_825619=y
CONFIG_ARM_ERRATA_852421=y
CONFIG_ARM_ERRATA_852423=y
CONFIG_OABI_COMPAT=y
CONFIG_DEPRECATED_PARAM_STRUCT=y
CONFIG_ZBOOT_ROM_TEXT=0x0
CONFIG_ZBOOT_ROM_BSS=0x0
CONFIG_KEXEC=y
# CONFIG_ATAGS_PROC is not set
CONFIG_FPE_NWFPE=y
CONFIG_VFP=y
# CONFIG_STRICT_KERNEL_RWX is not set
# CONFIG_STRICT_MODULE_RWX is not set
CONFIG_MODULES=y
CONFIG_MODULE_UNLOAD=y
CONFIG_PARTITION_ADVANCED=y
# CONFIG_MSDOS_PARTITION is not set
# CONFIG_EFI_PARTITION is not set
CONFIG_CMA=y
CONFIG_NET=y
CONFIG_PACKET=y
CONFIG_UNIX=y
CONFIG_INET=y
CONFIG_IP_MULTICAST=y
CONFIG_IP_PNP=y
CONFIG_IP_PNP_BOOTP=y
# CONFIG_INET_DIAG is not set
# CONFIG_IPV6 is not set
# CONFIG_WIRELESS is not set
CONFIG_NET_9P=y
CONFIG_NET_9P_VIRTIO=y
CONFIG_DEVTMPFS=y
CONFIG_DEVTMPFS_MOUNT=y
CONFIG_MTD=y
CONFIG_MTD_CMDLINE_PARTS=y
CONFIG_MTD_BLOCK=y
CONFIG_MTD_CFI=y
CONFIG_MTD_CFI_ADV_OPTIONS=y
CONFIG_MTD_CFI_INTELEXT=y
CONFIG_MTD_CFI_AMDSTD=y
CONFIG_MTD_PHYSMAP=y
CONFIG_MTD_PHYSMAP_OF=y
CONFIG_MTD_PHYSMAP_OF_VERSATILE=y
CONFIG_BLK_DEV_RAM=y
CONFIG_VIRTIO_BLK=y
CONFIG_VIRTIO_BLK_SCSI=y
CONFIG_NETDEVICES=y
CONFIG_VIRTIO_NET=y
# CONFIG_NET_VENDOR_ALACRITECH is not set
# CONFIG_NET_VENDOR_AMAZON is not set
# CONFIG_NET_VENDOR_AQUANTIA is not set
# CONFIG_NET_VENDOR_ARC is not set
# CONFIG_NET_VENDOR_AURORA is not set
# CONFIG_NET_VENDOR_BROADCOM is not set
# CONFIG_NET_VENDOR_CADENCE is not set
# CONFIG_NET_VENDOR_CAVIUM is not set
# CONFIG_NET_VENDOR_CIRRUS is not set
# CONFIG_NET_VENDOR_CORTINA is not set
# CONFIG_NET_VENDOR_EZCHIP is not set
# CONFIG_NET_VENDOR_FARADAY is not set
# CONFIG_NET_VENDOR_HISILICON is not set
# CONFIG_NET_VENDOR_HUAWEI is not set
# CONFIG_NET_VENDOR_MARVELL is not set
# CONFIG_NET_VENDOR_MELLANOX is not set
# CONFIG_NET_VENDOR_MICREL is not set
# CONFIG_NET_VENDOR_MICROCHIP is not set
# CONFIG_NET_VENDOR_MICROSEMI is not set
# CONFIG_NET_VENDOR_NATSEMI is not set
# CONFIG_NET_VENDOR_NETRONOME is not set
# CONFIG_NET_VENDOR_NI is not set
# CONFIG_NET_VENDOR_QUALCOMM is not set
# CONFIG_NET_VENDOR_RENESAS is not set
# CONFIG_NET_VENDOR_ROCKER is not set
# CONFIG_NET_VENDOR_SAMSUNG is not set
# CONFIG_NET_VENDOR_SEEQ is not set
# CONFIG_NET_VENDOR_SOLARFLARE is not set
# CONFIG_NET_VENDOR_SMSC is not set
# CONFIG_NET_VENDOR_SOCIONEXT is not set
# CONFIG_NET_VENDOR_STMICRO is not set
# CONFIG_NET_VENDOR_SYNOPSYS is not set
# CONFIG_NET_VENDOR_VIA is not set
# CONFIG_NET_VENDOR_WIZNET is not set
# CONFIG_WLAN is not set
# CONFIG_INPUT_KEYBOARD is not set
# CONFIG_INPUT_MOUSE is not set
# CONFIG_SERIO is not set
CONFIG_VT_HW_CONSOLE_BINDING=y
CONFIG_LEGACY_PTY_COUNT=16
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_EXTENDED=y
CONFIG_SERIAL_8250_MANY_PORTS=y
CONFIG_SERIAL_8250_SHARE_IRQ=y
CONFIG_SERIAL_8250_RSA=y
CONFIG_SERIAL_AMBA_PL010=y
CONFIG_SERIAL_AMBA_PL010_CONSOLE=y
CONFIG_SERIAL_AMBA_PL011=y
CONFIG_SERIAL_AMBA_PL011_CONSOLE=y
CONFIG_SERIAL_EARLYCON_ARM_SEMIHOST=y
CONFIG_VIRTIO_CONSOLE=y
CONFIG_HW_RANDOM=y
CONFIG_HW_RANDOM_VIRTIO=y
CONFIG_I2C=y
CONFIG_I2C_CHARDEV=y
CONFIG_SPI=y
CONFIG_SPI_PL022=y
CONFIG_GPIO_PL061=y
CONFIG_POWER_RESET=y
CONFIG_POWER_RESET_VERSATILE=y
# CONFIG_HWMON is not set
CONFIG_WATCHDOG=y
CONFIG_BCM2835_WDT=y
CONFIG_MFD_SYSCON=y
# CONFIG_USB_SUPPORT is not set
CONFIG_MMC=y
CONFIG_MMC_ARMMMCI=y
CONFIG_NEW_LEDS=y
CONFIG_LEDS_CLASS=y
CONFIG_LEDS_SYSCON=y
CONFIG_LEDS_TRIGGERS=y
CONFIG_LEDS_TRIGGER_HEARTBEAT=y
CONFIG_LEDS_TRIGGER_CPU=y
CONFIG_RTC_CLASS=y
CONFIG_RTC_DRV_DS1307=y
CONFIG_SYNC_FILE=y
CONFIG_VIRTIO_BALLOON=y
CONFIG_VIRTIO_MMIO=y
CONFIG_VIRTIO_MMIO_CMDLINE_DEVICES=y
CONFIG_MAILBOX=y
CONFIG_BCM2835_MBOX=y
CONFIG_9P_FS=y
CONFIG_9P_FS_POSIX_ACL=y
# CONFIG_CRYPTO_ECHAINIV is not set
CONFIG_CRYPTO_HMAC=y
CONFIG_CRYPTO_SHA256=y
CONFIG_CRYPTO_DEV_VIRTIO=y
CONFIG_DEBUG_FS=y
CONFIG_MAGIC_SYSRQ=y
CONFIG_DEBUG_KERNEL=y
CONFIG_DEBUG_USER=y
CONFIG_DEBUG_LL=y
CONFIG_DEBUG_UART_PHYS=0x101f1000
CONFIG_DEBUG_UART_VIRT=0xf11f1000
Raw
linux-build.sh
#!/bin/sh
export TOOLCHAIN=arm-linux-gnueabi
export ARCH=arm
export CROSS_COMPILE=${TOOLCHAIN}-
make $@
Raw
linux-run.sh
#!/bin/sh
set -xe
QEMU=qemu-system-arm
# qemu-system-arm -M help
MACHINE=raspi2b
MEM=1G
M="-M $MACHINE -m $MEM"
DIR=arch/arm/boot
KERNEL=$DIR/zImage
CMDLINE="console=ttyAMA0 loglevel=7"
DTB="-dtb $DIR/dts/bcm2836-rpi-2-b.dtb"
$QEMU $M -nographic $EXTRA -kernel $KERNEL $DTB -append \""$CMDLINE"\" -initrd $@
@orangecms
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orangecms commented Sep 11, 2025

Turns out, I have to use internal/runtime/atomic instead of sync/atomic`` for the atomic.Bool.

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