Re: [PATCH] x86/mm: fix objtool failure with KMSAN enabled

[Dmitry Voytik]

On Wed, Jul 1, 2026 at 5:16 PM Alexander Potapenko <glider@xxxxxxxxxx> wrote:

> In fact I think the hangs are being caused by CONFIG_UNWINDER_ORC=y,
> sorry for the noise.

No worries!
Just in case, I double checked with current Linus' tree, defconfig +
KMSAN + DEBUG_INFO_* ,
and it looks like CONFIG_UNWINDER_ORC gets enabled:

git pull -r
make mrproper
make LLVM=1 defconfig
./scripts/config -e CONFIG_KMSAN \
  -e CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT
make LLVM=1 olddefconfig
make LLVM=1 W=ce -j(nproc) bzImage

grep CONFIG_UNWINDER_ORC .config
CONFIG_UNWINDER_ORC=y

and the kernel boots in qemu, so maybe something else is causing
(another?) issue?