From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: multipart/mixed; boundary="===============3112621329925163007==" MIME-Version: 1.0 From: kernel test robot Subject: arch/arm/kernel/return_address.c:44:1: warning: Label 'here' is not used. There is #if in function body so the label might be used in code that is removed by the preprocessor. [unusedLabelConfiguration] Date: Sat, 02 Apr 2022 14:40:21 +0800 Message-ID: <202204021433.QkAKKxLS-lkp@intel.com> List-Id: To: kbuild@lists.01.org --===============3112621329925163007== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable CC: kbuild-all(a)lists.01.org BCC: lkp(a)intel.com CC: linux-kernel(a)vger.kernel.org TO: "Russell King (Oracle)" CC: Ard Biesheuvel tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git = master head: 88e6c0207623874922712e162e25d9dafd39661e commit: c46c2c9b43f4f08f20dc06417fbf7091e4ca6d34 ARM: unwind: set frame.pc = correctly for current-thread unwinding date: 3 weeks ago :::::: branch date: 4 hours ago :::::: commit date: 3 weeks ago compiler: arm-linux-gnueabi-gcc (GCC) 11.2.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot cppcheck possible warnings: (new ones prefixed by >>, may not real problems) >> arch/arm/kernel/return_address.c:44:1: warning: Label 'here' is not used= . There is #if in function body so the label might be used in code that is = removed by the preprocessor. [unusedLabelConfiguration] here: ^ -- >> arch/arm/mm/ioremap.c:72:46: warning: Parameter 'vaddr' can be declared = with const [constParameter] struct static_vm *find_static_vm_vaddr(void *vaddr) ^ >> arch/arm/mm/ioremap.c:85:11: warning: Uninitialized variables: svm.vm, s= vm.list [uninitvar] return svm; ^ arch/arm/mm/ioremap.c:81:16: note: Assuming condition is false if (vm->addr > vaddr) ^ arch/arm/mm/ioremap.c:81:16: note: Assuming condition is false if (vm->addr > vaddr) ^ arch/arm/mm/ioremap.c:85:11: note: Uninitialized variables: svm.vm, svm.= list return svm; ^ -- >> arch/arm/kernel/stacktrace.c:163:1: warning: Label 'here' is not used. T= here is #if in function body so the label might be used in code that is rem= oved by the preprocessor. [unusedLabelConfiguration] here: ^ >> arch/arm/kernel/stacktrace.c:133:61: warning: Parameter 'tsk' can be dec= lared with const [constParameter] static noinline void __save_stack_trace(struct task_struct *tsk, ^ -- >> arch/arm/kernel/setup.c:744:2: warning: There is an unknown macro here s= omewhere. Configuration is required. If for_each_machine_desc is a macro th= en please configure it. [unknownMacro] for_each_machine_desc(p) ^ >> arch/arm/kernel/traps.c:497:1: warning: There is an unknown macro here s= omewhere. Configuration is required. If NOKPROBE_SYMBOL is a macro then ple= ase configure it. [unknownMacro] NOKPROBE_SYMBOL(do_undefinstr) ^ >> arch/arm/mm/dma-mapping.c:999:2: warning: There is an unknown macro here= somewhere. Configuration is required. If for_each_sg is a macro then pleas= e configure it. [unknownMacro] for_each_sg(sg, s, i, j) ^ vim +/here +44 arch/arm/kernel/return_address.c 4bf1fa5a34aa2d Uwe Kleine-K=C3=B6nig 2009-07-21 32 = 4bf1fa5a34aa2d Uwe Kleine-K=C3=B6nig 2009-07-21 33 void *return_addr= ess(unsigned int level) 4bf1fa5a34aa2d Uwe Kleine-K=C3=B6nig 2009-07-21 34 { 4bf1fa5a34aa2d Uwe Kleine-K=C3=B6nig 2009-07-21 35 struct return_ad= dress_data data; 4bf1fa5a34aa2d Uwe Kleine-K=C3=B6nig 2009-07-21 36 struct stackfram= e frame; 4bf1fa5a34aa2d Uwe Kleine-K=C3=B6nig 2009-07-21 37 = 01223f365074d6 Keun-O Park 2013-03-18 38 data.level =3D level = + 2; 01223f365074d6 Keun-O Park 2013-03-18 39 data.addr =3D NULL; 4bf1fa5a34aa2d Uwe Kleine-K=C3=B6nig 2009-07-21 40 = 4bf1fa5a34aa2d Uwe Kleine-K=C3=B6nig 2009-07-21 41 frame.fp =3D (un= signed long)__builtin_frame_address(0); a556ee1247b997 Behan Webster 2014-09-27 42 frame.sp =3D current_= stack_pointer; 4bf1fa5a34aa2d Uwe Kleine-K=C3=B6nig 2009-07-21 43 frame.lr =3D (un= signed long)__builtin_return_address(0); c46c2c9b43f4f0 Russell King (Oracle 2022-03-09 @44) here: c46c2c9b43f4f0 Russell King (Oracle 2022-03-09 45) frame.pc =3D (unsigne= d long)&&here; fed240d9c97438 Masami Hiramatsu 2021-10-21 46 #ifdef CONFIG_KRETPROB= ES fed240d9c97438 Masami Hiramatsu 2021-10-21 47 frame.kr_cur =3D NULL; fed240d9c97438 Masami Hiramatsu 2021-10-21 48 frame.tsk =3D current; fed240d9c97438 Masami Hiramatsu 2021-10-21 49 #endif 4bf1fa5a34aa2d Uwe Kleine-K=C3=B6nig 2009-07-21 50 = 4bf1fa5a34aa2d Uwe Kleine-K=C3=B6nig 2009-07-21 51 walk_stackframe(= &frame, save_return_addr, &data); 4bf1fa5a34aa2d Uwe Kleine-K=C3=B6nig 2009-07-21 52 = 4bf1fa5a34aa2d Uwe Kleine-K=C3=B6nig 2009-07-21 53 if (!data.level) 4bf1fa5a34aa2d Uwe Kleine-K=C3=B6nig 2009-07-21 54 return data.add= r; 4bf1fa5a34aa2d Uwe Kleine-K=C3=B6nig 2009-07-21 55 else 4bf1fa5a34aa2d Uwe Kleine-K=C3=B6nig 2009-07-21 56 return NULL; 4bf1fa5a34aa2d Uwe Kleine-K=C3=B6nig 2009-07-21 57 } 4bf1fa5a34aa2d Uwe Kleine-K=C3=B6nig 2009-07-21 58 = -- = 0-DAY CI Kernel Test Service https://01.org/lkp --===============3112621329925163007==--