Re: [bpf:master 3/3] kernel/bpf/arraymap.c:657:36: error: invalid application of 'sizeof' to incomplete type 'struct perf_sample_data'

Hi Matt,

due to this build issue I removed your commit from bpf tree.
Please fix and resubmit.

Thanks!

On Fri, May 31, 2019 at 10:48 PM kbuild test robot [off-list ref] wrote:

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git master
head:   0b21b5502f561940e0d29f7ec5f840309e4a0243
commit: 0b21b5502f561940e0d29f7ec5f840309e4a0243 [3/3] bpf: preallocate a perf_sample_data per event fd
config: m68k-allyesconfig (attached as .config)
compiler: m68k-linux-gcc (GCC) 7.4.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 0b21b5502f561940e0d29f7ec5f840309e4a0243
        # save the attached .config to linux build tree
        GCC_VERSION=7.4.0 make.cross ARCH=m68k

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <redacted>

All errors (new ones prefixed by >>):

   kernel/bpf/arraymap.c: In function 'bpf_event_entry_gen':

quoted

quoted

kernel/bpf/arraymap.c:657:36: error: invalid application of 'sizeof' to incomplete type 'struct perf_sample_data'

     ee = kzalloc(sizeof(*ee) + sizeof(struct perf_sample_data), GFP_ATOMIC);
                                       ^~~~~~

vim +657 kernel/bpf/arraymap.c

   651
   652  static struct bpf_event_entry *bpf_event_entry_gen(struct file *perf_file,
   653                                                     struct file *map_file)
   654  {
   655          struct bpf_event_entry *ee;
   656
 > 657          ee = kzalloc(sizeof(*ee) + sizeof(struct perf_sample_data), GFP_ATOMIC);
   658          if (ee) {
   659                  ee->event = perf_file->private_data;
   660                  ee->perf_file = perf_file;
   661                  ee->map_file = map_file;
   662                  ee->sd = (void *)ee + sizeof(*ee);
   663          }
   664
   665          return ee;
   666  }
   667

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