Re: [PATCH] net, bpf: use kvzalloc helper

From	kbuild test robot <lkp@intel.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH] net, bpf: use kvzalloc helper
Date	2017-01-26 16:00 +0100
Message-ID	<t3TGP-cu-37@gated-at.bofh.it> (permalink)
References	<t3T46-8qV-9@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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Hi Michal,

[auto build test ERROR on next-20170125]
[cannot apply to linus/master linux/master nf-next/master v4.9-rc8 v4.9-rc7 v4.9-rc6 v4.10-rc5]
[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/Michal-Hocko/net-bpf-use-kvzalloc-helper/20170126-221904
config: x86_64-randconfig-x014-201704 (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

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

   kernel/bpf/syscall.c: In function 'bpf_map_area_alloc':
>> kernel/bpf/syscall.c:61:9: error: implicit declaration of function 'kvzalloc' [-Werror=implicit-function-declaration]
     return kvzalloc(size, GFP_USER);
            ^~~~~~~~
>> kernel/bpf/syscall.c:61:9: warning: return makes pointer from integer without a cast [-Wint-conversion]
     return kvzalloc(size, GFP_USER);
            ^~~~~~~~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors

vim +/kvzalloc +61 kernel/bpf/syscall.c

    55	{
    56		/*
    57		 * FIXME: we would really like to not trigger the OOM killer and rather
    58		 * fail instead. This is not supported right now. Please nag MM people
    59		 * if these OOM start bothering people.
    60		 */
  > 61		return kvzalloc(size, GFP_USER);
    62	}
    63	
    64	void bpf_map_area_free(void *area)

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

Thread

Re: [PATCH 0/6 v3] kvmalloc Alexei Starovoitov <alexei.starovoitov@gmail.com> - 2017-01-25 19:20 +0100
  Re: [PATCH 0/6 v3] kvmalloc Daniel Borkmann <daniel@iogearbox.net> - 2017-01-25 21:20 +0100
    Re: [PATCH 0/6 v3] kvmalloc Michal Hocko <mhocko@kernel.org> - 2017-01-26 08:50 +0100
      Re: [PATCH 0/6 v3] kvmalloc Daniel Borkmann <daniel@iogearbox.net> - 2017-01-26 10:40 +0100
        RE: [PATCH 0/6 v3] kvmalloc David Laight <David.Laight@ACULAB.COM> - 2017-01-26 10:50 +0100
        Re: [PATCH 0/6 v3] kvmalloc Michal Hocko <mhocko@kernel.org> - 2017-01-26 11:10 +0100
          Re: [PATCH 0/6 v3] kvmalloc Michal Hocko <mhocko@kernel.org> - 2017-01-26 11:40 +0100
            Re: [PATCH 0/6 v3] kvmalloc Daniel Borkmann <daniel@iogearbox.net> - 2017-01-26 12:10 +0100
              Re: [PATCH 0/6 v3] kvmalloc Michal Hocko <mhocko@kernel.org> - 2017-01-26 12:50 +0100
            Re: [PATCH 0/6 v3] kvmalloc Joe Perches <joe@perches.com> - 2017-01-26 13:20 +0100
              Re: [PATCH 0/6 v3] kvmalloc Michal Hocko <mhocko@kernel.org> - 2017-01-26 13:30 +0100
          Re: [PATCH 0/6 v3] kvmalloc Daniel Borkmann <daniel@iogearbox.net> - 2017-01-26 12:40 +0100
            Re: [PATCH 0/6 v3] kvmalloc Michal Hocko <mhocko@kernel.org> - 2017-01-26 13:00 +0100
              Re: [PATCH 0/6 v3] kvmalloc Daniel Borkmann <daniel@iogearbox.net> - 2017-01-26 14:20 +0100
                Re: [PATCH 0/6 v3] kvmalloc Michal Hocko <mhocko@kernel.org> - 2017-01-26 14:50 +0100
                Re: [PATCH 0/6 v3] kvmalloc Michal Hocko <mhocko@kernel.org> - 2017-01-26 15:20 +0100
                Re: [PATCH] net, bpf: use kvzalloc helper kbuild test robot <lkp@intel.com> - 2017-01-26 16:00 +0100
                Re: [PATCH 0/6 v3] kvmalloc Daniel Borkmann <daniel@iogearbox.net> - 2017-01-26 21:50 +0100
                Re: [PATCH 0/6 v3] kvmalloc Michal Hocko <mhocko@kernel.org> - 2017-01-27 11:20 +0100
                Re: [PATCH 0/6 v3] kvmalloc Daniel Borkmann <daniel@iogearbox.net> - 2017-01-27 22:00 +0100
                Re: [PATCH 0/6 v3] kvmalloc Michal Hocko <mhocko@kernel.org> - 2017-01-30 09:20 +0100
                Re: [PATCH 0/6 v3] kvmalloc Michal Hocko <mhocko@kernel.org> - 2017-01-30 17:40 +0100
                Re: [PATCH 0/6 v3] kvmalloc Daniel Borkmann <daniel@iogearbox.net> - 2017-01-30 18:20 +0100
                Re: [PATCH 0/6 v3] kvmalloc Daniel Borkmann <daniel@iogearbox.net> - 2017-01-30 18:20 +0100

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