kernelbuilder / builds / 467e8ccb5502

linux 6.18.53 x86_64kvm_guestboot OK

+BPF_SYSCALL +KSM +NET_NS +SECCOMP_FILTER +TRANSPARENT_HUGEPAGE +USERFAULTFD · 2026-09-23 05:49 UTC · 2920 objects · 7m39s · 3.9/4 cores busy

bzImage 14.9 MB modules.tar.zst 131 kB vmlinux (ELF, PVH) 53.2 MB .config 147 kB build log rebuild with changes

CONFIG_NET_NS was already on in the base config
CONFIG_SECCOMP_FILTER was already on in the base config
toolchain: building the compiler image with apt (no vertex cache yet)
seed: pulled kbuild-seed/linux-6.18.53-x86_64-901358ea19930336.tzst (454M)
warm: reusing persisted object tree
boot test: OK via firecracker/kvm in 1s -- KERNELBUILDER_BOOT_OK Linux version 6.18.53 (builder@linux) (gcc (Ubuntu 13.3.0-6ubuntu2~24.04.1) 13

Timeline

start container5s
fetch source2s
hydrate cache28s
configure + validate5s
compile6m48s
push cache5s
upload5s
finalize1s

Config vs kvm_guest base 32 options differ

option	base	this build
`BPF_SYSCALL`	`n`	`y`	requested
`KSM`	`n`	`y`	requested
`TRANSPARENT_HUGEPAGE`	`n`	`y`	requested
`USERFAULTFD`	`n`	`y`	requested
`ARCH_ENABLE_THP_MIGRATION`	`-`	`y`	dependency
`ARCH_SUPPORTS_HUGE_PFNMAP`	`-`	`y`	dependency
`ARCH_SUPPORTS_PMD_PFNMAP`	`-`	`y`	dependency
`ARCH_SUPPORTS_PUD_PFNMAP`	`-`	`y`	dependency
`ARCH_WANT_PMD_MKWRITE`	`-`	`y`	dependency
`BPF_EVENTS`	`-`	`y`	dependency
`BPF_PRELOAD`	`-`	`n`	dependency
`BPF_UNPRIV_DEFAULT_OFF`	`-`	`y`	dependency
`CGROUP_BPF`	`-`	`n`	dependency
`HAVE_ARCH_USERFAULTFD_MINOR`	`-`	`y`	dependency
`HAVE_ARCH_USERFAULTFD_WP`	`-`	`y`	dependency
`IO_URING_ZCRX`	`-`	`y`	dependency
`MM_ID`	`-`	`y`	dependency
`NET_DEVMEM`	`-`	`y`	dependency
`NET_SOCK_MSG`	`-`	`y`	dependency
`NETFILTER_BPF_LINK`	`-`	`y`	dependency
`NETKIT`	`-`	`n`	dependency
`NO_PAGE_MAPCOUNT`	`-`	`n`	dependency
`PAGE_POOL`	`-`	`y`	dependency
`PAGE_POOL_STATS`	`-`	`n`	dependency
`PERSISTENT_HUGE_ZERO_FOLIO`	`-`	`n`	dependency
`PTE_MARKER_UFFD_WP`	`-`	`y`	dependency
`READ_ONLY_THP_FOR_FS`	`-`	`n`	dependency
`THP_SWAP`	`-`	`y`	dependency
`TRANSPARENT_HUGEPAGE_ALWAYS`	`-`	`y`	dependency
`TRANSPARENT_HUGEPAGE_MADVISE`	`-`	`n`	dependency
`TRANSPARENT_HUGEPAGE_NEVER`	`-`	`n`	dependency
`XDP_SOCKETS`	`-`	`n`	dependency

Spec

The normalized build spec: POST /api/build with this body (plus the page's CSRF token) returns job 467e8ccb5502 again without rebuilding.

{
  "version": "6.18.53",
  "arch": "x86_64",
  "base": "kvm_guest",
  "modules": "base",
  "enable": [
    "CONFIG_BPF_SYSCALL",
    "CONFIG_KSM",
    "CONFIG_NET_NS",
    "CONFIG_SECCOMP_FILTER",
    "CONFIG_TRANSPARENT_HUGEPAGE",
    "CONFIG_USERFAULTFD"
  ],
  "disable": [],
  "extra": ""
}