linux-kernel - vmlinux.o: warning: objtool: _RINvMs3_NvNtNtCshc5sK6KjdJJ_6kernel4sync4lock1__INtB6_12___ThePinDataINtNtNtBc_5alloc4kvec3VecINtNtCsbsbRiabPlh9_4core3pin3PinINtNtB1a_4kbox3BoxINtNtBc_7debugfs5ScopeNtCscKcGI1asYQG_19rust_debugfs_scoped10DeviceDataENtNtB1a

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Message-ID: <aTLLr1GnQF62vTwP@rli9-mobl>
Date: Fri, 5 Dec 2025 20:10:23 +0800
From: kernel test robot <lkp@...el.com>
To: Josh Poimboeuf <jpoimboe@...nel.org>
CC: <oe-kbuild-all@...ts.linux.dev>, <linux-kernel@...r.kernel.org>
Subject: vmlinux.o: warning: objtool:
 _RINvMs3_NvNtNtCshc5sK6KjdJJ_6kernel4sync4lock1__INtB6_12___ThePinDataINtNtNtBc_5alloc4kvec3VecINtNtCsbsbRiabPlh9_4core3pin3PinINtNtB1a_4kbox3BoxINtNtBc_7debugfs5ScopeNtCscKcGI1asYQG_19rust_debugfs_scoped10DeviceDataENtNtB1a_9...

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   2061f18ad76ecaddf8ed17df81b8611ea88dbddd
commit: 2058f6d1660edc4a9bda9bee627792b352121b10 objtool: Refactor prefix symbol creation code
date:   7 weeks ago
:::::: branch date: 5 hours ago
:::::: commit date: 7 weeks ago
config: x86_64-randconfig-102-20251204 (https://download.01.org/0day-ci/archive/20251205/202512051709.DbdqVrxG-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/20251205/202512051709.DbdqVrxG-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@...el.com>
| Closes: https://lore.kernel.org/r/202512051709.DbdqVrxG-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> vmlinux.o: warning: objtool: _RINvMs3_NvNtNtCshc5sK6KjdJJ_6kernel4sync4lock1__INtB6_12___ThePinDataINtNtNtBc_5alloc4kvec3VecINtNtCsbsbRiabPlh9_4core3pin3PinINtNtB1a_4kbox3BoxINtNtBc_7debugfs5ScopeNtCscKcGI1asYQG_19rust_debugfs_scoped10DeviceDataENtNtB1a_9allocator7KmallocEEB3s_ENtNtB8_5mutex12MutexBackendE5stateNtNtB1z_7convert10InfallibleINtNtCs57PXBekmiam_8pin_init10___internal11InitClosureNCINvMs5_NtBc_5typesINtB60_6OpaqueNtNtCsfd3uB5I4hpp_8bindings12bindings_raw5mutexE8ffi_initNCNCNvMs0_B8_INtB8_4LockB15_B3Z_E3new0s_0E0B6b_B4x_EEB2G_: symbol name too long, can't create __pfx_ symbol
>> vmlinux.o: warning: objtool: _RINvXs5_NtNtCshc5sK6KjdJJ_6kernel5alloc4kboxINtB6_3BoxINtNtNtCsbsbRiabPlh9_4core3mem12maybe_uninit11MaybeUninitINtNtBa_7debugfs5ScopeNtCscKcGI1asYQG_19rust_debugfs_scoped10DeviceDataEENtNtB8_9allocator7KmallocEINtCs57PXBekmiam_8pin_init12InPlaceWriteB1L_E14write_pin_initNtNtBa_5error5ErrorINtNtB3p_10___internal11InitClosureNCINvYIBH_B1L_B2W_EINtNtBa_4init11InPlaceInitB1L_E8pin_initNtNtBX_7convert10InfallibleINtB3p_12ChainPinInitIB4F_NCINvMs_B1O_B1L_3newB6a_NCINvMB1O_NtB1O_3Dir5scopeB27_B6a_NCNvB29_17create_file_writes0_0B27_E0B27_Es0_0B1L_B6a_ENCB73_0B1L_B6a_EE0B1L_B4l_EEB29_: symbol name too long, can't create __pfx_ symbol
>> vmlinux.o: warning: objtool: _RINvXs5_NtNtCshc5sK6KjdJJ_6kernel5alloc4kboxINtB6_3BoxINtNtNtCsbsbRiabPlh9_4core3mem12maybe_uninit11MaybeUninitINtNtBa_7debugfs5ScopeNtCscKcGI1asYQG_19rust_debugfs_scoped10ModuleDataEENtNtB8_9allocator7KmallocEINtCs57PXBekmiam_8pin_init12InPlaceWriteB1L_E14write_pin_initNtNtBa_5error5ErrorINtNtB3p_10___internal11InitClosureNCINvYIBH_B1L_B2W_EINtNtBa_4init11InPlaceInitB1L_E8pin_initNtNtBX_7convert10InfallibleINtB3p_12ChainPinInitIB4F_NCINvMs_B1O_B1L_3newB6a_NCINvMB1O_NtB1O_3Dir5scopeB27_B6a_NCNvB29_12init_control0IB4F_NCNvMB29_B27_4inits_0B27_B6a_EE0B8k_Es0_0B1L_B6a_ENCB73_0B1L_B6a_EE0B1L_B4l_EEB29_: symbol name too long, can't create __pfx_ symbol

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https://github.com/intel/lkp-tests/wiki