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k3s-root's Issues

Including k3s-root in vanilla buildroot build?

What is the preferred way of including k3s-root in Buildroot built Linux image? I imagine building the k3s-root separately and adding the produced binaries using BR2_ROOTFS_OVERLAY is one option. Is there a better way?

scripts should verify checksum

To detect potential compromise, the scripts should verify checksum here

k3s-root/scripts/download

Line 9 in 38468f8

curl -fL https://buildroot.org/downloads/buildroot-${BUILDROOT_VERSION}.tar.bz2 | tar xvjf - -C /usr/src/buildroot --strip-components=1

k3s-root/scripts/package

Lines 25 to 40 in 38468f8

# download pre-built binaries
SLIRP4NETNS_VERSION="v1.1.8"
FUSE_OVERLAYFS_VERSION="v1.3.0"
uname_m="${BUILDARCH}"
case "${BUILDARCH}" in
"amd64")
uname_m="x86_64" ;;
"arm64")
uname_m="aarch64" ;;
"arm")
uname_m="armv7l" ;;
esac
curl -o /source/artifacts/${BUILDARCH}/bin/slirp4netns -sSL https://github.com/rootless-containers/slirp4netns/releases/download/${SLIRP4NETNS_VERSION}/slirp4netns-${uname_m}
chmod +x /source/artifacts/${BUILDARCH}/bin/slirp4netns
curl -o /source/artifacts/${BUILDARCH}/bin/fuse-overlayfs -sSL https://github.com/containers/fuse-overlayfs/releases/download/${FUSE_OVERLAYFS_VERSION}/fuse-overlayfs-${uname_m}
chmod +x /source/artifacts/${BUILDARCH}/bin/fuse-overlayfs

s390x support

We are working on building k3s-root on s390x, since we need the binaries generated in k3s-root in order to build rke2 on s390x. Unfortunately, buildroot doesn't support static builds on s390x https://bugs.busybox.net/show_bug.cgi?id=14256
Would it be possible to use shared libraries instead of static?

ebtables-legacy segfauls on s390x with SLE15-SP2

I just took binaries from https://github.com/k3s-io/k3s-root/releases/download/v0.10.0-rc.0/k3s-root-xtables-s390x.tar https://github.com/k3s-io/k3s-root/releases/download/v0.10.0-rc.0/k3s-root-s390x.tar and executed on s390x VM with SLE15-SP2:

./bin/aux/ebtables-legacy
Segmentation fault (core dumped)

kernel info:

sles@rancher-sles15sp2-jeos-ext4-devnet:~/k3s-root-release/k3s-root> uname -a
Linux rancher-sles15sp2-jeos-ext4-devnet 5.3.18-24.43-default #1 SMP Thu Dec 3 21:53:21 UTC 2020 (b48bf35) s390x s390x s390x GNU/Linux

just help:

strace ./bin/aux/ebtables-legacy --help
execve("./bin/aux/ebtables-legacy", ["./bin/aux/ebtables-legacy", "--help"], 0x3ffc307f3f8 /* 49 vars */) = 0
set_tid_address(0x10187d0)              = 29685
brk(NULL)                               = 0x2fef000
brk(0x2ff1000)                          = 0x2ff1000
mmap(0x2fef000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x2fef000
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x3ff948fd000
--- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
+++ killed by SIGSEGV (core dumped) +++
Segmentation fault (core dumped)

and list tables:

strace -f ./ebtables-legacy -L
execve("./ebtables-legacy", ["./ebtables-legacy", "-L"], 0x3ffe7cfe910 /* 45 vars */) = 0
set_tid_address(0x10187d0)              = 29793
brk(NULL)                               = 0x2fba000
brk(0x2fbc000)                          = 0x2fbc000
mmap(0x2fba000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x2fba000
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x3ff9befd000
--- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
+++ killed by SIGSEGV (core dumped) +++
Segmentation fault (core dumped)

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