tree: https://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf.git master head: 57be8a51f2a8ba390f7c5a03d2ae812a1b39c9bb commit: 862ae3a4a07e4c22cecde084dcd00a340065ec34 [5/7] netfilter: ctnetlink: don't use conntrack/expect object addresses as id config: i386-randconfig-x005-201914 (attached as .config) compiler: gcc-7 (Debian 7.3.0-1) 7.3.0 reproduce: git checkout 862ae3a4a07e4c22cecde084dcd00a340065ec34 # save the attached .config to linux build tree make ARCH=i386 All errors (new ones prefixed by >>): net//netfilter/nf_conntrack_core.c: In function 'nf_ct_get_id': >> net//netfilter/nf_conntrack_core.c:483:54: error: passing argument 3 of 'hsiphash' from incompatible pointer type [-Werror=incompatible-pointer-types] d = hsiphash(&ct->tuplehash, sizeof(ct->tuplehash), &ct_id_seed); ^ In file included from net//netfilter/nf_conntrack_core.c:28:0: include/linux/siphash.h:130:19: note: expected 'const hsiphash_key_t * {aka const struct <anonymous> *}' but argument is of type 'siphash_key_t * {aka struct <anonymous> *}' static inline u32 hsiphash(const void *data, size_t len, ^~~~~~~~ cc1: some warnings being treated as errors -- net//netfilter/nf_conntrack_netlink.c: In function 'nf_expect_get_id': >> net//netfilter/nf_conntrack_netlink.c:2714:48: error: passing argument 3 of 'hsiphash' from incompatible pointer type [-Werror=incompatible-pointer-types] d = hsiphash(&exp->tuple, sizeof(exp->tuple), &exp_id_seed); ^ In file included from net//netfilter/nf_conntrack_netlink.c:32:0: include/linux/siphash.h:130:19: note: expected 'const hsiphash_key_t * {aka const struct <anonymous> *}' but argument is of type 'siphash_key_t * {aka struct <anonymous> *}' static inline u32 hsiphash(const void *data, size_t len, ^~~~~~~~ cc1: some warnings being treated as errors vim +/hsiphash +483 net//netfilter/nf_conntrack_core.c 452 453 /* Generate a almost-unique pseudo-id for a given conntrack. 454 * 455 * intentionally doesn't re-use any of the seeds used for hash 456 * table location, we assume id gets exposed to userspace. 457 * 458 * Following nf_conn items do not change throughout lifetime 459 * of the nf_conn after it has been committed to main hash table: 460 * 461 * 1. nf_conn address 462 * 2. nf_conn->ext address 463 * 3. nf_conn->master address (normally NULL) 464 * 4. tuple 465 * 5. the associated net namespace 466 */ 467 u32 nf_ct_get_id(const struct nf_conn *ct) 468 { 469 static __read_mostly siphash_key_t ct_id_seed; 470 unsigned long a, b, c, d; 471 472 net_get_random_once(&ct_id_seed, sizeof(ct_id_seed)); 473 474 a = (unsigned long)ct; 475 b = (unsigned long)ct->master ^ net_hash_mix(nf_ct_net(ct)); 476 c = (unsigned long)ct->ext; 477 478 #ifdef CONFIG_64BIT 479 d = siphash(&ct->tuplehash, sizeof(ct->tuplehash), &ct_id_seed); 480 481 return siphash_4u64((u64)a, (u64)b, (u64)c, (u64)d, &ct_id_seed); 482 #else > 483 d = hsiphash(&ct->tuplehash, sizeof(ct->tuplehash), &ct_id_seed); 484 485 return siphash_4u32((u32)a, (u32)b, (u32)c, (u32)d, &ct_id_seed); 486 #endif 487 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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