[jolsa-perf:bpf/tracing_multi_2 1/1] kernel/bpf/trampoline.c:40:48: sparse: sparse: non size-preserving pointer to integer cast

[jolsa-perf:bpf/tracing_multi_2 1/1] kernel/bpf/trampoline.c:40:48: sparse: sparse: non size-preserving pointer to integer cast

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git bpf/tracing_multi_2
head:   ebbef7d1c33bdfa68df327c0d80101c04ab6d996
commit: ebbef7d1c33bdfa68df327c0d80101c04ab6d996 [1/1] trampoline mutext pool
config: parisc-randconfig-r121-20260210 (https://download.01.org/0day-ci/archive/20260210/202602101418.dDmyGSaa-lkp@intel.com/config)
compiler: hppa-linux-gcc (GCC) 11.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260210/202602101418.dDmyGSaa-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/202602101418.dDmyGSaa-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
   kernel/bpf/trampoline.c:18:31: sparse: sparse: symbol 'bpf_extension_verifier_ops' was not declared. Should it be static?
   kernel/bpf/trampoline.c:20:27: sparse: sparse: symbol 'bpf_extension_prog_ops' was not declared. Should it be static?
>> kernel/bpf/trampoline.c:40:48: sparse: sparse: non size-preserving pointer to integer cast

vim +40 kernel/bpf/trampoline.c

    37	
    38	static struct mutex *trampoline_locks_lookup(struct bpf_trampoline *tr)
    39	{
  > 40		return &trampoline_locks[hash_64((u64) tr, TRAMPOLINE_LOCKS_BITS)];
    41	}
    42	

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