On 22 Nov 2018, at 21:01, kbuild test robot [off-list ref] wrote:

Hi Ard,

I love your patch! Yet something to improve:

Ugh, apologies for this. I?m sure i build tested /something/ but clearly not what i should have tested.

In any case, following up on the discussion I?ll have to respin this in any case. I?ll triple check next time that what i send out was tested properly.

[auto build test ERROR on bpf-next/master]
[also build test ERROR on v4.20-rc3 next-20181122]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Ard-Biesheuvel/bpf-permit-JIT-allocations-to-be-served-outside-the-module-region/20181123-033144
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
config: x86_64-randconfig-x002-201846 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
       # save the attached .config to linux build tree
       make ARCH=x86_64 

All error/warnings (new ones prefixed by >>):

  kernel//bpf/core.c: In function 'bpf_jit_free_exec':

quoted

quoted

kernel//bpf/core.c:632:24: error: 'size' undeclared (first use in this function); did you mean 'ksize'?

    return module_memfree(size);
                          ^~~~
                          ksize
  kernel//bpf/core.c:632:24: note: each undeclared identifier is reported only once for each function it appears in

quoted

quoted

kernel//bpf/core.c:632:9: warning: 'return' with a value, in function returning void

    return module_memfree(size);
           ^~~~~~~~~~~~~~
  kernel//bpf/core.c:630:13: note: declared here
   void __weak bpf_jit_free_exec(const void *addr)
               ^~~~~~~~~~~~~~~~~

vim +632 kernel//bpf/core.c

  629    
  630    void __weak bpf_jit_free_exec(const void *addr)
  631    {

quoted

632        return module_memfree(size);

  633    }
  634    

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<.config.gz>