linux-kernel - [ardb:arm32-ftrace-fixes 46/50] arch/arm/kernel/ftrace.c:239:39: error: 'struct stackframe' has no member named 'lr

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Date:   Fri, 28 Jan 2022 04:30:01 +0800
From:   kernel test robot <lkp@...el.com>
To:     Ard Biesheuvel <ardb@...nel.org>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: [ardb:arm32-ftrace-fixes 46/50] arch/arm/kernel/ftrace.c:239:39:
 error: 'struct stackframe' has no member named 'lr_addr'

tree:   git://git.kernel.org/pub/scm/linux/kernel/git/ardb/linux.git arm32-ftrace-fixes
head:   db81a4be9a228c6d728b5e10ada88553cc72a001
commit: 94e8ea79256baf12b39634037ff5336c1930308e [46/50] ARM: ftrace: enable the graph tracer with the EABI unwinder
config: arm-buildonly-randconfig-r006-20220124 (https://download.01.org/0day-ci/archive/20220128/202201280425.w2sPQp19-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://git.kernel.org/pub/scm/linux/kernel/git/ardb/linux.git/commit/?id=94e8ea79256baf12b39634037ff5336c1930308e
        git remote add ardb git://git.kernel.org/pub/scm/linux/kernel/git/ardb/linux.git
        git fetch --no-tags ardb arm32-ftrace-fixes
        git checkout 94e8ea79256baf12b39634037ff5336c1930308e
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arm SHELL=/bin/bash arch/arm/kernel/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All errors (new ones prefixed by >>):

   arch/arm/kernel/ftrace.c:216:6: warning: no previous prototype for 'prepare_ftrace_return' [-Wmissing-prototypes]
     216 | void prepare_ftrace_return(unsigned long *parent, unsigned long self_addr,
         |      ^~~~~~~~~~~~~~~~~~~~~
   arch/arm/kernel/ftrace.c: In function 'prepare_ftrace_return':
>> arch/arm/kernel/ftrace.c:239:39: error: 'struct stackframe' has no member named 'lr_addr'
     239 |                         parent = frame.lr_addr;
         |                                       ^


vim +239 arch/arm/kernel/ftrace.c

   213	
   214	#ifdef CONFIG_FUNCTION_GRAPH_TRACER
   215	asmlinkage
   216	void prepare_ftrace_return(unsigned long *parent, unsigned long self_addr,
   217				   unsigned long frame_pointer,
   218				   unsigned long stack_pointer)
   219	{
   220		unsigned long return_hooker = (unsigned long) &return_to_handler;
   221		unsigned long old;
   222	
   223		if (unlikely(atomic_read(&current->tracing_graph_pause)))
   224			return;
   225	
   226		if (IS_ENABLED(CONFIG_UNWINDER_FRAME_POINTER)) {
   227			/* FP points one word below parent's top of stack */
   228			frame_pointer += 4;
   229		} else {
   230			struct stackframe frame = {
   231				.fp = frame_pointer,
   232				.sp = stack_pointer,
   233				.lr = self_addr,
   234				.pc = self_addr,
   235			};
   236			if (unwind_frame(&frame) < 0)
   237				return;
   238			if (frame.lr != self_addr)
 > 239				parent = frame.lr_addr;
   240			frame_pointer = frame.sp;
   241		}
   242	
   243		old = *parent;
   244		*parent = return_hooker;
   245	
   246		if (function_graph_enter(old, self_addr, frame_pointer, NULL))
   247			*parent = old;
   248	}
   249	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org