Warning a LOAD segment with RWX permissions during linux kernel build leads to an error

Question

When building the 5.18 kernel from the Linus Torvalds git for arch linux, several similar warnings appear and the build ends with an error:

`MODINFO modules.builtin.modinfo
 GEN     modules.builtin
 LD      .tmp_vmlinux.btf
 ld: warning: .tmp_vmlinux.btf has a LOAD segment with RWX permissions
 BTF     .btf.vmlinux.bin.o
 LD      .tmp_vmlinux.kallsyms1
 ld: warning: .tmp_vmlinux.kallsyms1 has a LOAD segment with RWX permissions
 KSYMS   .tmp_vmlinux.kallsyms1.S
 AS      .tmp_vmlinux.kallsyms1.S
 LD      .tmp_vmlinux.kallsyms2
 ld: warning: .tmp_vmlinux.kallsyms2 has a LOAD segment with RWX permissions
 KSYMS   .tmp_vmlinux.kallsyms2.S
 AS      .tmp_vmlinux.kallsyms2.S
 LD      vmlinux
 ld: warning: vmlinux has a LOAD segment with RWX permissions
 BTFIDS  vmlinux
 FAILED: load BTF from vmlinux: Invalid argument
 make: *** [Makefile:1158: vmlinux] Error 255
 make: *** Deleting file 'vmlinux'`

Has anyone encountered this or can suggest possible solutions? All the necessary dependencies from wiki have been installed

I built the kernel according to the instructions from the arch linux wiki https://wiki.archlinux.org/title/Kernel/Traditional_compilation

Same here, trying to bisect some problem, building an older 5.15.13 kernel ends up with that fail. — Hi-Angel, Mar 17 '23 at 02:18

score 0 · Answer 1 · answered Mar 17 '23 at 02:39

Had the same problem while building 5.15.13. Apparently an older kernel requires an older pahole to get successfully linked. In my case I had distro provided 1:1.24+r29+g02d67c5-1 version that I downgraded to 1:1.23-1.

Note: the warnings didn't go away, but build completed successfully.

[…]
  MODINFO modules.builtin.modinfo
  GEN     modules.builtin
  LD      .tmp_vmlinux.btf
ld: warning: .tmp_vmlinux.btf has a LOAD segment with RWX permissions
  BTF     .btf.vmlinux.bin.o
  LD      .tmp_vmlinux.kallsyms1
ld: warning: .tmp_vmlinux.kallsyms1 has a LOAD segment with RWX permissions
  KSYMS   .tmp_vmlinux.kallsyms1.S
  AS      .tmp_vmlinux.kallsyms1.S
  LD      .tmp_vmlinux.kallsyms2
ld: warning: .tmp_vmlinux.kallsyms2 has a LOAD segment with RWX permissions
  KSYMS   .tmp_vmlinux.kallsyms2.S
  AS      .tmp_vmlinux.kallsyms2.S
  LD      vmlinux
ld: warning: vmlinux has a LOAD segment with RWX permissions
  BTFIDS  vmlinux
  SORTTAB vmlinux
  SYSMAP  System.map
  HOSTCC  arch/x86/tools/insn_decoder_test
  HOSTCC  arch/x86/tools/insn_sanity
  MODPOST modules-only.symvers
  TEST    posttest
  GEN     Module.symvers
[…]

Credits go to this post. But worth noting that in that topic OP simply replaced some scripts under scripts/ dir, however in my case I didn't have those. Instead I specifically downgraded pahole.

Warning a LOAD segment with RWX permissions during linux kernel build leads to an error

1 Answers1