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Ip2fit/a6Oztw4WBJ79NUA7mhkBADJFn3EztPmtCQG5CML6ZwvZP5honmghJZXyV7gmFmWtl2DioTeZYFBAnXA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN7PPFD91879A44 On Fri May 29, 2026 at 10:31 PM JST, Gary Guo wrote: > On Fri May 29, 2026 at 2:09 PM BST, Alexandre Courbot wrote: >> On Fri May 29, 2026 at 9:13 PM JST, Gary Guo wrote: >>> On Fri May 29, 2026 at 9:19 AM BST, Alexandre Courbot wrote: >>>> On Fri May 29, 2026 at 5:00 PM JST, Alice Ryhl wrote: >>>>> On Fri, May 29, 2026 at 9:54=E2=80=AFAM Alexandre Courbot 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/linu= x-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/0= day-ci/archive/20260529/202605291041.seNEWvLQ-lkp@intel.com/config) >>> >>> Ah, OPTIMIZE_FOR_SIZE build, it's always this... >>> >>>>>> >> compiler: clang version 20.1.8 (https://github.com/llvm/llvm-proj= ect 87f0227cb60147a26a1eeb4fb06e3b505e9c7261) >>>>>> >> rustc: rustc 1.88.0 (6b00bc388 2025-06-23) >>>>>> >> reproduce (this is a W=3D1 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 >>>>>> >> | Closes: https://lore.kernel.org/oe-kbuild-all/202605291041.seNE= WvLQ-lkp@intel.com/ >>>>>> >> >>>>>> >> All warnings (new ones prefixed by >>): >>>>>> >> >>>>>> >> samples/rust/rust_driver_auxiliary.o: warning: objtool: asan.m= odule_ctor+0xd: call without frame pointer save/setup >>>>>> >> samples/rust/rust_driver_auxiliary.o: warning: objtool: asan.m= odule_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-v2-3-06de4c556= d55@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_3BoxINtNtNtCsbsbRia= bPlh9_4core3mem12maybe_uninit11MaybeUninitINtNtBa_9auxiliary16RegistrationD= ataNtCseULRbgTYaTO_21rust_driver_auxiliary4DataEENtNtB8_9allocator7KmallocE= INtCs57PXBekmiam_8pin_init12InPlaceWriteB1L_E14write_pin_initNtNtBa_5error5= ErrorINtNtB3y_10___internal11InitClosureNCINvYIBH_B1L_B35_EINtNtBa_4init11I= nPlaceInitB1L_E8pin_initB4u_IB4O_NCINvMsc_B1O_INtB1O_12RegistrationB2l_E3ne= wNtNtBX_7convert10InfallibleB2l_Es_0B1L_B4u_EE0B1L_B4u_EEB2n_: symbol name = too long, can't create __pfx_ symbol >>>> >>>> As this patch might help shorten the symbol. >>> >>> https://lore.kernel.org/rust-for-linux/20260527-pin-init-sync-v1-5-e203= 35ed2501@garyguo.net/ >>> would also help a bit with this, although I'm not sure if is sufficient= . >>> >>> Also, regarding your patch; do you need `#[inline(always)]` or is `#[in= line]` >>> sufficient? Inlining shouldn't be forced unless there's a good justific= ation. >> >> If the code is not inlined, we risk a build failure - pretty similarly >> to the link errors of `build_assert!`. I'd say that justifies using >> `#[inline(always)]` here, but maybe we should also add a comment >> explaining why we do so. > > I think for long symbol names it's a very difference argument. There're m= any ways to > create complex types that can lead to those. With this logic every generi= c code > needs to be `#[inline(always)]`, which obviously is not what we want. In that case, should we just increase the maximum allowed length of symbols= ?