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Date: Wed, 15 Jul 2020 10:50:46 +0800
From: kernel test robot <lkp@...el.com>
To: Dmitry Yakunin <zeil@...dex-team.ru>, alexei.starovoitov@...il.com,
daniel@...earbox.net, netdev@...r.kernel.org, bpf@...r.kernel.org
Cc: kbuild-all@...ts.01.org, clang-built-linux@...glegroups.com,
sdf@...gle.com
Subject: Re: [PATCH bpf-next v2 1/4] bpf: setup socket family and addresses
in bpf_prog_test_run_skb
Hi Dmitry,
Thank you for the patch! Yet something to improve:
[auto build test ERROR on bpf-next/master]
url: https://github.com/0day-ci/linux/commits/Dmitry-Yakunin/bpf-cgroup-skb-improvements-for-bpf_prog_test_run/20200715-041420
base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
config: arm64-randconfig-r005-20200714 (attached as .config)
compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 02946de3802d3bc65bc9f2eb9b8d4969b5a7add8)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install arm64 cross compiling tool for clang build
# apt-get install binutils-aarch64-linux-gnu
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm64
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
All errors (new ones prefixed by >>):
net/bpf/test_run.c:120:14: warning: no previous prototype for function 'bpf_fentry_test1' [-Wmissing-prototypes]
int noinline bpf_fentry_test1(int a)
^
net/bpf/test_run.c:120:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
int noinline bpf_fentry_test1(int a)
^
static
net/bpf/test_run.c:125:14: warning: no previous prototype for function 'bpf_fentry_test2' [-Wmissing-prototypes]
int noinline bpf_fentry_test2(int a, u64 b)
^
net/bpf/test_run.c:125:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
int noinline bpf_fentry_test2(int a, u64 b)
^
static
net/bpf/test_run.c:130:14: warning: no previous prototype for function 'bpf_fentry_test3' [-Wmissing-prototypes]
int noinline bpf_fentry_test3(char a, int b, u64 c)
^
net/bpf/test_run.c:130:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
int noinline bpf_fentry_test3(char a, int b, u64 c)
^
static
net/bpf/test_run.c:135:14: warning: no previous prototype for function 'bpf_fentry_test4' [-Wmissing-prototypes]
int noinline bpf_fentry_test4(void *a, char b, int c, u64 d)
^
net/bpf/test_run.c:135:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
int noinline bpf_fentry_test4(void *a, char b, int c, u64 d)
^
static
net/bpf/test_run.c:140:14: warning: no previous prototype for function 'bpf_fentry_test5' [-Wmissing-prototypes]
int noinline bpf_fentry_test5(u64 a, void *b, short c, int d, u64 e)
^
net/bpf/test_run.c:140:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
int noinline bpf_fentry_test5(u64 a, void *b, short c, int d, u64 e)
^
static
net/bpf/test_run.c:145:14: warning: no previous prototype for function 'bpf_fentry_test6' [-Wmissing-prototypes]
int noinline bpf_fentry_test6(u64 a, void *b, short c, int d, void *e, u64 f)
^
net/bpf/test_run.c:145:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
int noinline bpf_fentry_test6(u64 a, void *b, short c, int d, void *e, u64 f)
^
static
net/bpf/test_run.c:154:14: warning: no previous prototype for function 'bpf_fentry_test7' [-Wmissing-prototypes]
int noinline bpf_fentry_test7(struct bpf_fentry_test_t *arg)
^
net/bpf/test_run.c:154:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
int noinline bpf_fentry_test7(struct bpf_fentry_test_t *arg)
^
static
net/bpf/test_run.c:159:14: warning: no previous prototype for function 'bpf_fentry_test8' [-Wmissing-prototypes]
int noinline bpf_fentry_test8(struct bpf_fentry_test_t *arg)
^
net/bpf/test_run.c:159:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
int noinline bpf_fentry_test8(struct bpf_fentry_test_t *arg)
^
static
net/bpf/test_run.c:164:14: warning: no previous prototype for function 'bpf_modify_return_test' [-Wmissing-prototypes]
int noinline bpf_modify_return_test(int a, int *b)
^
net/bpf/test_run.c:164:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
int noinline bpf_modify_return_test(int a, int *b)
^
static
>> net/bpf/test_run.c:460:7: error: no member named 'skc_v6_rcv_saddr' in 'struct sock_common'; did you mean 'skc_rcv_saddr'?
sk->sk_v6_rcv_saddr = ipv6_hdr(skb)->saddr;
^
include/net/sock.h:380:37: note: expanded from macro 'sk_v6_rcv_saddr'
#define sk_v6_rcv_saddr __sk_common.skc_v6_rcv_saddr
^
include/net/sock.h:169:11: note: 'skc_rcv_saddr' declared here
__be32 skc_rcv_saddr;
^
>> net/bpf/test_run.c:460:23: error: assigning to '__be32' (aka 'unsigned int') from incompatible type 'struct in6_addr'
sk->sk_v6_rcv_saddr = ipv6_hdr(skb)->saddr;
^ ~~~~~~~~~~~~~~~~~~~~
>> net/bpf/test_run.c:461:7: error: no member named 'skc_v6_daddr' in 'struct sock_common'; did you mean 'skc_daddr'?
sk->sk_v6_daddr = ipv6_hdr(skb)->daddr;
^
include/net/sock.h:379:34: note: expanded from macro 'sk_v6_daddr'
#define sk_v6_daddr __sk_common.skc_v6_daddr
^
include/net/sock.h:168:11: note: 'skc_daddr' declared here
__be32 skc_daddr;
^
net/bpf/test_run.c:461:19: error: assigning to '__be32' (aka 'unsigned int') from incompatible type 'struct in6_addr'
sk->sk_v6_daddr = ipv6_hdr(skb)->daddr;
^ ~~~~~~~~~~~~~~~~~~~~
9 warnings and 4 errors generated.
vim +460 net/bpf/test_run.c
389
390 int bpf_prog_test_run_skb(struct bpf_prog *prog, const union bpf_attr *kattr,
391 union bpf_attr __user *uattr)
392 {
393 bool is_l2 = false, is_direct_pkt_access = false;
394 u32 size = kattr->test.data_size_in;
395 u32 repeat = kattr->test.repeat;
396 struct __sk_buff *ctx = NULL;
397 u32 retval, duration;
398 int hh_len = ETH_HLEN;
399 struct sk_buff *skb;
400 struct sock *sk;
401 void *data;
402 int ret;
403
404 data = bpf_test_init(kattr, size, NET_SKB_PAD + NET_IP_ALIGN,
405 SKB_DATA_ALIGN(sizeof(struct skb_shared_info)));
406 if (IS_ERR(data))
407 return PTR_ERR(data);
408
409 ctx = bpf_ctx_init(kattr, sizeof(struct __sk_buff));
410 if (IS_ERR(ctx)) {
411 kfree(data);
412 return PTR_ERR(ctx);
413 }
414
415 switch (prog->type) {
416 case BPF_PROG_TYPE_SCHED_CLS:
417 case BPF_PROG_TYPE_SCHED_ACT:
418 is_l2 = true;
419 /* fall through */
420 case BPF_PROG_TYPE_LWT_IN:
421 case BPF_PROG_TYPE_LWT_OUT:
422 case BPF_PROG_TYPE_LWT_XMIT:
423 is_direct_pkt_access = true;
424 break;
425 default:
426 break;
427 }
428
429 sk = kzalloc(sizeof(struct sock), GFP_USER);
430 if (!sk) {
431 kfree(data);
432 kfree(ctx);
433 return -ENOMEM;
434 }
435 sock_net_set(sk, current->nsproxy->net_ns);
436 sock_init_data(NULL, sk);
437
438 skb = build_skb(data, 0);
439 if (!skb) {
440 kfree(data);
441 kfree(ctx);
442 kfree(sk);
443 return -ENOMEM;
444 }
445 skb->sk = sk;
446
447 skb_reserve(skb, NET_SKB_PAD + NET_IP_ALIGN);
448 __skb_put(skb, size);
449 skb->protocol = eth_type_trans(skb, current->nsproxy->net_ns->loopback_dev);
450 skb_reset_network_header(skb);
451
452 switch (skb->protocol) {
453 case htons(ETH_P_IP):
454 sk->sk_family = AF_INET;
455 sk->sk_rcv_saddr = ip_hdr(skb)->saddr;
456 sk->sk_daddr = ip_hdr(skb)->daddr;
457 break;
458 case htons(ETH_P_IPV6):
459 sk->sk_family = AF_INET6;
> 460 sk->sk_v6_rcv_saddr = ipv6_hdr(skb)->saddr;
> 461 sk->sk_v6_daddr = ipv6_hdr(skb)->daddr;
462 break;
463 default:
464 break;
465 }
466
467 if (is_l2)
468 __skb_push(skb, hh_len);
469 if (is_direct_pkt_access)
470 bpf_compute_data_pointers(skb);
471 ret = convert___skb_to_skb(skb, ctx);
472 if (ret)
473 goto out;
474 ret = bpf_test_run(prog, skb, repeat, &retval, &duration, false);
475 if (ret)
476 goto out;
477 if (!is_l2) {
478 if (skb_headroom(skb) < hh_len) {
479 int nhead = HH_DATA_ALIGN(hh_len - skb_headroom(skb));
480
481 if (pskb_expand_head(skb, nhead, 0, GFP_USER)) {
482 ret = -ENOMEM;
483 goto out;
484 }
485 }
486 memset(__skb_push(skb, hh_len), 0, hh_len);
487 }
488 convert_skb_to___skb(skb, ctx);
489
490 size = skb->len;
491 /* bpf program can never convert linear skb to non-linear */
492 if (WARN_ON_ONCE(skb_is_nonlinear(skb)))
493 size = skb_headlen(skb);
494 ret = bpf_test_finish(kattr, uattr, skb->data, size, retval, duration);
495 if (!ret)
496 ret = bpf_ctx_finish(kattr, uattr, ctx,
497 sizeof(struct __sk_buff));
498 out:
499 kfree_skb(skb);
500 bpf_sk_storage_free(sk);
501 kfree(sk);
502 kfree(ctx);
503 return ret;
504 }
505
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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