Re: [linux-next:master 3728/9137] samples/rust/rust_driver_auxiliary.o: warning: objtool: _RINvXs5_NtNtCshc5sK6KjdJJ_6kernel5alloc4kboxINtB6_3BoxINtNtNtCsbsbRiabPlh9_4core3mem12maybe_uninit11MaybeUninitINtNtBa_9auxiliary16RegistrationDataNtCseULRbgTYaTO_21rust_driver_auxiliary4DataEENtNtB...

[Alice Ryhl <aliceryhl@google.com>]

On Fri, May 29, 2026 at 05:19:06PM +0900, Alexandre Courbot wrote:
> On Fri May 29, 2026 at 5:00 PM JST, Alice Ryhl wrote:
> > On Fri, May 29, 2026 at 9:54 AM Alexandre Courbot <acourbot@nvidia.com> wrote:
> >>
> >> On Fri May 29, 2026 at 3:35 PM JST, Alice Ryhl wrote:
> >> > On Fri, May 29, 2026 at 10:52:52AM +0800, kernel test robot wrote:
> >> >> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
> >> >> head:   f7af91adc230aa99e23330ecf85bc9badd9780ad
> >> >> commit: fd3b87ff0232f46e1ad53a48609a3853c8757c6c [3728/9137] rust: auxiliary: add registration data to auxiliary devices
> >> >> config: x86_64-randconfig-004-20260529 (https://download.01.org/0day-ci/archive/20260529/202605291041.seNEWvLQ-lkp@intel.com/config)
> >> >> compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
> >> >> rustc: rustc 1.88.0 (6b00bc388 2025-06-23)
> >> >> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260529/202605291041.seNEWvLQ-lkp@intel.com/reproduce)
> >> >>
> >> >> If you fix the issue in a separate patch/commit (i.e. not just a new version of
> >> >> the same patch/commit), kindly add following tags
> >> >> | Reported-by: kernel test robot <lkp@intel.com>
> >> >> | Closes: https://lore.kernel.org/oe-kbuild-all/202605291041.seNEWvLQ-lkp@intel.com/
> >> >>
> >> >> All warnings (new ones prefixed by >>):
> >> >>
> >> >>    samples/rust/rust_driver_auxiliary.o: warning: objtool: asan.module_ctor+0xd: call without frame pointer save/setup
> >> >>    samples/rust/rust_driver_auxiliary.o: warning: objtool: asan.module_dtor+0x1: call without frame pointer save/setup
> >> >
> >> > This one looks like this bug:
> >> > https://github.com/rust-lang/rust/pull/156980
> >>
> >> Does [1] work around the problem by any chance?
> >>
> >> [1] https://lore.kernel.org/all/20260527-nova-exports-v2-3-06de4c556d55@nvidia.com/
> >
> > The asan.module_ctor error? I don't see how it would work around that.
> 
> I was referring to this error on the report:
> 
> _RINvXs5_NtNtCshc5sK6KjdJJ_6kernel5alloc4kboxINtB6_3BoxINtNtNtCsbsbRiabPlh9_4core3mem12maybe_uninit11MaybeUninitINtNtBa_9auxiliary16RegistrationDataNtCseULRbgTYaTO_21rust_driver_auxiliary4DataEENtNtB8_9allocator7KmallocEINtCs57PXBekmiam_8pin_init12InPlaceWriteB1L_E14write_pin_initNtNtBa_5error5ErrorINtNtB3y_10___internal11InitClosureNCINvYIBH_B1L_B35_EINtNtBa_4init11InPlaceInitB1L_E8pin_initB4u_IB4O_NCINvMsc_B1O_INtB1O_12RegistrationB2l_E3newNtNtBX_7convert10InfallibleB2l_Es_0B1L_B4u_EE0B1L_B4u_EEB2n_: symbol name too long, can't create __pfx_ symbol
> 
> As this patch might help shorten the symbol.

That is plausible.