[jimc:ksyms-tune 4/6] kernel/kprobes.c:76:undefined reference to `kallsyms_lookup_name'

[kernel test robot <lkp@intel.com>]

tree:   https://github.com/jimc/linux.git ksyms-tune
head:   bc5ee628d6230f6c491f1b868aa7a201bf2ee513
commit: 7e96e1c95c0fa1af496e25ee9645927632dc4d32 [4/6] kallsyms: improve the compare in binary search in kallsyms_lookup_names()
config: x86_64-rhel-9.4-kunit (https://download.01.org/0day-ci/archive/20260916/202609160940.3ibzgix7-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260916/202609160940.3ibzgix7-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/202609160940.3ibzgix7-lkp@intel.com/

Note: the jimc/ksyms-tune HEAD bc5ee628d6230f6c491f1b868aa7a201bf2ee513 builds fine.
      It only hurts bisectability.

All errors (new ones prefixed by >>):

   ld: vmlinux.o: in function `kprobe_lookup_name':
>> kernel/kprobes.c:76:(.text+0x5bbcd6): undefined reference to `kallsyms_lookup_name'
   ld: vmlinux.o: in function `ftrace_lookup_symbols':
>> kernel/trace/ftrace.c:9367:(.text+0x5ffa39): undefined reference to `kallsyms_lookup_name'
   ld: vmlinux.o: in function `parse_pred':
>> kernel/trace/trace_events_filter.c:1766:(.text+0x6ac669): undefined reference to `kallsyms_lookup_name'
   ld: vmlinux.o: in function `trace_kprobe_address':
>> kernel/trace/trace_kprobe.c:214:(.text+0x7046e1): undefined reference to `kallsyms_lookup_name'
>> ld: kernel/trace/trace_kprobe.c:214:(.text+0x705086): undefined reference to `kallsyms_lookup_name'
   ld: vmlinux.o:kernel/trace/trace_kprobe.c:214: more undefined references to `kallsyms_lookup_name' follow


vim +76 kernel/kprobes.c

ef53d9c5e4da147 Srinivasa D S 2008-07-25  72  
290e3070762ac80 Naveen N Rao  2017-04-19  73  kprobe_opcode_t * __weak kprobe_lookup_name(const char *name,
290e3070762ac80 Naveen N Rao  2017-04-19  74  					unsigned int __unused)
49e0b4658fe6aab Naveen N Rao  2017-04-19  75  {
49e0b4658fe6aab Naveen N Rao  2017-04-19 @76  	return ((kprobe_opcode_t *)(kallsyms_lookup_name(name)));
49e0b4658fe6aab Naveen N Rao  2017-04-19  77  }
49e0b4658fe6aab Naveen N Rao  2017-04-19  78  

:::::: The code at line 76 was first introduced by commit
:::::: 49e0b4658fe6aab5bf6bfe0738a86c1895930ad1 kprobes: Convert kprobe_lookup_name() to a function

:::::: TO: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
:::::: CC: Michael Ellerman <mpe@ellerman.id.au>

--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki