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From: kbuild test robot <lkp@intel.com>
To: "Toke Høiland-Jørgensen" <toke@redhat.com>
Cc: kbuild-all@01.org, Daniel Borkmann <daniel@iogearbox.net>,
	Alexei Starovoitov <ast@kernel.org>,
	Martin KaFai Lau <kafai@fb.com>, Song Liu <songliubraving@fb.com>,
	Yonghong Song <yhs@fb.com>,
	Marek Majkowski <marek@cloudflare.com>,
	Lorenz Bauer <lmb@cloudflare.com>,
	David Miller <davem@davemloft.net>,
	Jesper Dangaard Brouer <brouer@redhat.com>,
	netdev@vger.kernel.org, bpf@vger.kernel.org
Subject: Re: [PATCH bpf-next 4/9] xdp: Implement chain call logic to support multiple programs on one interface
Date: Thu, 3 Oct 2019 01:53:23 +0800	[thread overview]
Message-ID: <201910030142.Ja1dyUUE%lkp@intel.com> (raw)
In-Reply-To: <157002302894.1302756.12004905609124608227.stgit@alrua-x1>

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Hi "Toke,

I love your patch! Yet something to improve:

[auto build test ERROR on bpf-next/master]

url:    https://github.com/0day-ci/linux/commits/Toke-H-iland-J-rgensen/xdp-Support-multiple-programs-on-a-single-interface-through-chain-calls/20191003-005238
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
config: sparc64-allnoconfig (attached as .config)
compiler: sparc64-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
        # save the attached .config to linux build tree
        GCC_VERSION=7.4.0 make.cross ARCH=sparc64 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   In file included from include/net/sock.h:59:0,
                    from include/linux/tcp.h:19,
                    from include/linux/ipv6.h:87,
                    from include/net/ipv6.h:12,
                    from include/linux/sunrpc/clnt.h:28,
                    from include/linux/nfs_fs.h:32,
                    from arch/sparc/kernel/sys_sparc32.c:25:
   include/linux/filter.h: In function 'bpf_prog_run_xdp':
   include/linux/filter.h:725:10: error: implicit declaration of function 'bpf_xdp_chain_map_get_prog' [-Werror=implicit-function-declaration]
      prog = bpf_xdp_chain_map_get_prog(chain_map, prog->aux->id, ret);
             ^~~~~~~~~~~~~~~~~~~~~~~~~~
>> include/linux/filter.h:725:8: error: assignment makes pointer from integer without a cast [-Werror=int-conversion]
      prog = bpf_xdp_chain_map_get_prog(chain_map, prog->aux->id, ret);
           ^
   cc1: all warnings being treated as errors

vim +725 include/linux/filter.h

   695	
   696	#define BPF_XDP_MAX_CHAIN_CALLS 32
   697	static __always_inline u32 bpf_prog_run_xdp(const struct bpf_prog *prog,
   698						    struct xdp_buff *xdp)
   699	{
   700		/* Caller needs to hold rcu_read_lock() (!), otherwise program
   701		 * can be released while still running, or map elements could be
   702		 * freed early while still having concurrent users. XDP fastpath
   703		 * already takes rcu_read_lock() when fetching the program, so
   704		 * it's not necessary here anymore.
   705		 */
   706	
   707		int i = BPF_XDP_MAX_CHAIN_CALLS;
   708		struct bpf_map *chain_map;
   709		u32 ret;
   710	
   711		chain_map = rcu_dereference(xdp->rxq->dev->xdp_chain_map);
   712		if (!chain_map)
   713			return BPF_PROG_RUN(prog, xdp);
   714	
   715		do {
   716			if (!--i) {
   717				ret = XDP_ABORTED;
   718				goto out;
   719			}
   720	
   721			ret = BPF_PROG_RUN(prog, xdp);
   722			if (ret == XDP_ABORTED)
   723				goto out;
   724	
 > 725			prog = bpf_xdp_chain_map_get_prog(chain_map, prog->aux->id, ret);
   726		} while(prog);
   727	
   728	out:
   729		return ret;
   730	}
   731	

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

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  parent reply	other threads:[~2019-10-02 17:54 UTC|newest]

Thread overview: 53+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-02 13:30 [PATCH bpf-next 0/9] xdp: Support multiple programs on a single interface through chain calls Toke Høiland-Jørgensen
2019-10-02 13:30 ` [PATCH bpf-next 1/9] hashtab: Add new bpf_map_fd_put_value op Toke Høiland-Jørgensen
2019-10-02 13:30 ` [PATCH bpf-next 2/9] xdp: Add new xdp_chain_map type for specifying XDP call sequences Toke Høiland-Jørgensen
2019-10-02 15:50   ` Lorenz Bauer
2019-10-02 18:25     ` Toke Høiland-Jørgensen
2019-10-02 13:30 ` [PATCH bpf-next 3/9] xdp: Support setting and getting device chain map Toke Høiland-Jørgensen
2019-10-02 15:50   ` Lorenz Bauer
2019-10-02 18:32     ` Toke Høiland-Jørgensen
2019-10-02 18:07   ` kbuild test robot
2019-10-02 18:29   ` kbuild test robot
2019-10-02 13:30 ` [PATCH bpf-next 4/9] xdp: Implement chain call logic to support multiple programs on one interface Toke Høiland-Jørgensen
2019-10-02 17:33   ` kbuild test robot
2019-10-02 17:53   ` kbuild test robot [this message]
2019-10-02 13:30 ` [PATCH bpf-next 5/9] tools/include/uapi: Add XDP chain map definitions Toke Høiland-Jørgensen
2019-10-02 13:30 ` [PATCH bpf-next 6/9] tools/libbpf_probes: Add support for xdp_chain map type Toke Høiland-Jørgensen
2019-10-02 13:30 ` [PATCH bpf-next 7/9] bpftool: Add definitions " Toke Høiland-Jørgensen
2019-10-02 13:30 ` [PATCH bpf-next 8/9] libbpf: Add support for setting and getting XDP chain maps Toke Høiland-Jørgensen
2019-10-02 13:30 ` [PATCH bpf-next 9/9] selftests: Add tests for XDP chain calls Toke Høiland-Jørgensen
2019-10-02 15:10 ` [PATCH bpf-next 0/9] xdp: Support multiple programs on a single interface through " Alan Maguire
2019-10-02 15:33   ` Toke Høiland-Jørgensen
2019-10-02 16:34     ` John Fastabend
2019-10-02 18:33       ` Toke Høiland-Jørgensen
2019-10-02 20:34         ` John Fastabend
2019-10-03  7:48           ` Toke Høiland-Jørgensen
2019-10-03 10:09             ` Jesper Dangaard Brouer
2019-10-03 19:45               ` John Fastabend
2019-10-02 16:35 ` Lorenz Bauer
2019-10-02 18:54   ` Toke Høiland-Jørgensen
2019-10-02 16:43 ` John Fastabend
2019-10-02 19:09   ` Toke Høiland-Jørgensen
2019-10-02 19:15   ` Daniel Borkmann
2019-10-02 19:29     ` Toke Høiland-Jørgensen
2019-10-02 19:46     ` Alexei Starovoitov
2019-10-03  7:58       ` Toke Høiland-Jørgensen
2019-10-02 18:38 ` Song Liu
2019-10-02 18:54   ` Song Liu
2019-10-02 19:25     ` Toke Høiland-Jørgensen
2019-10-03  8:53       ` Jesper Dangaard Brouer
2019-10-03 14:03         ` Alexei Starovoitov
2019-10-03 14:33           ` Toke Høiland-Jørgensen
2019-10-03 14:53             ` Edward Cree
2019-10-03 18:49               ` Jesper Dangaard Brouer
2019-10-03 19:35               ` John Fastabend
2019-10-04  8:09                 ` Toke Høiland-Jørgensen
2019-10-04 10:34                   ` Edward Cree
2019-10-04 15:58                     ` Lorenz Bauer
2019-10-07 16:43                       ` Edward Cree
2019-10-07 17:12                         ` Lorenz Bauer
2019-10-07 19:21                           ` Edward Cree
2019-10-07 21:01                         ` Alexei Starovoitov
2019-10-02 19:23   ` Toke Høiland-Jørgensen
2019-10-02 19:49     ` Song Liu
2019-10-03  7:59       ` Toke Høiland-Jørgensen

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