From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D483BCA9EC5 for ; Wed, 30 Oct 2019 16:30:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7DD39208E3 for ; Wed, 30 Oct 2019 16:30:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727670AbfJ3QaA (ORCPT ); Wed, 30 Oct 2019 12:30:00 -0400 Received: from mga02.intel.com ([134.134.136.20]:41968 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726261AbfJ3Q37 (ORCPT ); Wed, 30 Oct 2019 12:29:59 -0400 X-Amp-Result: UNKNOWN X-Amp-Original-Verdict: FILE UNKNOWN X-Amp-File-Uploaded: False Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga101.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 30 Oct 2019 09:29:58 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.68,248,1569308400"; d="scan'208";a="198725767" Received: from lkp-server01.sh.intel.com (HELO lkp-server01) ([10.239.97.150]) by fmsmga008.fm.intel.com with ESMTP; 30 Oct 2019 09:29:56 -0700 Received: from kbuild by lkp-server01 with local (Exim 4.89) (envelope-from ) id 1iPqr6-0000Ox-47; Thu, 31 Oct 2019 00:29:56 +0800 Date: Thu, 31 Oct 2019 00:29:04 +0800 From: kbuild test robot To: Joe Perches Cc: kbuild-all@lists.01.org, Andrew Morton , linux-kernel , clang-built-linux@googlegroups.com Subject: Re: [PATCH] compiler*.h: Add '__' prefix and suffix to all __attribute__ #defines Message-ID: <201910310006.XmSNHarx%lkp@intel.com> References: <7a15bc8ad7437dc3a044a4f9cd283500bd0b5f36.camel@perches.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <7a15bc8ad7437dc3a044a4f9cd283500bd0b5f36.camel@perches.com> X-Patchwork-Hint: ignore User-Agent: NeoMutt/20170113 (1.7.2) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Joe, I love your patch! Perhaps something to improve: [auto build test WARNING on linus/master] [also build test WARNING on v5.4-rc5 next-20191030] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Joe-Perches/compiler-h-Add-__-prefix-and-suffix-to-all-__attribute__-defines/20191030-054036 base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 23fdb198ae81f47a574296dab5167c5e136a02ba reproduce: # apt-get install sparse # sparse version: v0.6.1-dirty make ARCH=x86_64 allmodconfig make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' If you fix the issue, kindly add following tag Reported-by: kbuild test robot sparse warnings: (new ones prefixed by >>) include/linux/mm_types.h:673:36: sparse: sparse: cast to restricted vm_fault_t include/linux/mm_types.h:674:36: sparse: sparse: cast to restricted vm_fault_t include/linux/mm_types.h:675:36: sparse: sparse: cast to restricted vm_fault_t include/linux/mm_types.h:676:36: sparse: sparse: cast to restricted vm_fault_t include/linux/mm_types.h:677:36: sparse: sparse: cast to restricted vm_fault_t include/linux/mm_types.h:678:36: sparse: sparse: cast to restricted vm_fault_t include/linux/mm_types.h:679:36: sparse: sparse: cast to restricted vm_fault_t include/linux/mm_types.h:680:36: sparse: sparse: cast to restricted vm_fault_t include/linux/mm_types.h:681:36: sparse: sparse: cast to restricted vm_fault_t include/linux/mm_types.h:682:36: sparse: sparse: cast to restricted vm_fault_t include/linux/mm_types.h:683:36: sparse: sparse: cast to restricted vm_fault_t include/linux/mm_types.h:684:36: sparse: sparse: cast to restricted vm_fault_t include/linux/mm_types.h:685:36: sparse: sparse: cast to restricted vm_fault_t include/linux/mm_types.h:686:36: sparse: sparse: cast to restricted vm_fault_t kernel/bpf/core.c:79:27: sparse: sparse: cast to restricted gfp_t kernel/bpf/core.c:79:27: sparse: sparse: cast to restricted gfp_t kernel/bpf/core.c:79:27: sparse: sparse: cast to restricted gfp_t kernel/bpf/core.c:79:40: sparse: sparse: cast to restricted gfp_t kernel/bpf/core.c:88:37: sparse: sparse: cast to restricted gfp_t kernel/bpf/core.c:88:37: sparse: sparse: cast to restricted gfp_t kernel/bpf/core.c:88:37: sparse: sparse: cast to restricted gfp_t include/linux/slab.h:690:38: sparse: sparse: cast to restricted gfp_t include/linux/slab.h:329:13: sparse: sparse: cast to restricted gfp_t include/linux/slab.h:329:13: sparse: sparse: cast to restricted gfp_t include/linux/slab.h:336:24: sparse: sparse: cast to restricted gfp_t kernel/bpf/core.c:106:27: sparse: sparse: cast to restricted gfp_t kernel/bpf/core.c:106:27: sparse: sparse: cast to restricted gfp_t kernel/bpf/core.c:106:27: sparse: sparse: cast to restricted gfp_t kernel/bpf/core.c:106:40: sparse: sparse: cast to restricted gfp_t kernel/bpf/core.c:138:42: sparse: sparse: cast to restricted gfp_t kernel/bpf/core.c:138:42: sparse: sparse: cast to restricted gfp_t kernel/bpf/core.c:138:42: sparse: sparse: cast to restricted gfp_t kernel/bpf/core.c:138:55: sparse: sparse: cast to restricted gfp_t include/linux/slab.h:629:47: sparse: sparse: cast to restricted gfp_t kernel/bpf/core.c:206:49: sparse: sparse: arithmetics on pointers to functions kernel/bpf/core.c:219:27: sparse: sparse: cast to restricted gfp_t kernel/bpf/core.c:219:27: sparse: sparse: cast to restricted gfp_t kernel/bpf/core.c:219:27: sparse: sparse: cast to restricted gfp_t kernel/bpf/core.c:219:40: sparse: sparse: cast to restricted gfp_t kernel/bpf/core.c:320:17: sparse: sparse: cast to restricted __be64 kernel/bpf/core.c:329:29: sparse: sparse: cast to restricted __be32 kernel/bpf/core.c:462:37: sparse: sparse: cast to restricted gfp_t kernel/bpf/core.c:462:37: sparse: sparse: cast to restricted gfp_t kernel/bpf/core.c:462:37: sparse: sparse: cast to restricted gfp_t kernel/bpf/core.c:462:37: sparse: sparse: cast to restricted gfp_t >> kernel/bpf/core.c:1417:45: sparse: sparse: cast to restricted __be16 >> kernel/bpf/core.c:1417:32: sparse: sparse: cast from restricted __be16 kernel/bpf/core.c:1420:45: sparse: sparse: cast to restricted __be32 >> kernel/bpf/core.c:1420:32: sparse: sparse: cast from restricted __be32 kernel/bpf/core.c:1423:45: sparse: sparse: cast to restricted __be64 >> kernel/bpf/core.c:1423:32: sparse: sparse: cast from restricted __be64 >> kernel/bpf/core.c:1430:45: sparse: sparse: cast to restricted __le16 >> kernel/bpf/core.c:1430:32: sparse: sparse: cast from restricted __le16 >> kernel/bpf/core.c:1433:45: sparse: sparse: cast to restricted __le32 >> kernel/bpf/core.c:1433:32: sparse: sparse: cast from restricted __le32 >> kernel/bpf/core.c:1436:45: sparse: sparse: cast to restricted __le64 >> kernel/bpf/core.c:1436:32: sparse: sparse: cast from restricted __le64 kernel/bpf/core.c:1447:43: sparse: sparse: arithmetics on pointers to functions kernel/bpf/core.c:1452:48: sparse: sparse: arithmetics on pointers to functions kernel/bpf/core.c:1632:77: sparse: sparse: subtraction of functions? Share your drugs kernel/bpf/core.c:1858:41: sparse: sparse: cast to restricted gfp_t kernel/bpf/core.c:1858:41: sparse: sparse: cast to restricted gfp_t kernel/bpf/core.c:1858:41: sparse: sparse: cast to restricted gfp_t kernel/bpf/core.c:1858:41: sparse: sparse: cast to restricted gfp_t kernel/bpf/core.c:1858:52: sparse: sparse: cast to restricted gfp_t kernel/bpf/core.c:1926:56: sparse: sparse: cast to restricted gfp_t kernel/bpf/core.c:1926:56: sparse: sparse: cast to restricted gfp_t kernel/bpf/core.c:1926:56: sparse: sparse: cast to restricted gfp_t vim +1417 kernel/bpf/core.c f5bffecda951b5 Alexei Starovoitov 2014-07-22 1320 f5bffecda951b5 Alexei Starovoitov 2014-07-22 1321 select_insn: f5bffecda951b5 Alexei Starovoitov 2014-07-22 1322 goto *jumptable[insn->code]; f5bffecda951b5 Alexei Starovoitov 2014-07-22 1323 f5bffecda951b5 Alexei Starovoitov 2014-07-22 1324 /* ALU */ f5bffecda951b5 Alexei Starovoitov 2014-07-22 1325 #define ALU(OPCODE, OP) \ f5bffecda951b5 Alexei Starovoitov 2014-07-22 1326 ALU64_##OPCODE##_X: \ f5bffecda951b5 Alexei Starovoitov 2014-07-22 1327 DST = DST OP SRC; \ f5bffecda951b5 Alexei Starovoitov 2014-07-22 1328 CONT; \ f5bffecda951b5 Alexei Starovoitov 2014-07-22 1329 ALU_##OPCODE##_X: \ f5bffecda951b5 Alexei Starovoitov 2014-07-22 1330 DST = (u32) DST OP (u32) SRC; \ f5bffecda951b5 Alexei Starovoitov 2014-07-22 1331 CONT; \ f5bffecda951b5 Alexei Starovoitov 2014-07-22 1332 ALU64_##OPCODE##_K: \ f5bffecda951b5 Alexei Starovoitov 2014-07-22 1333 DST = DST OP IMM; \ f5bffecda951b5 Alexei Starovoitov 2014-07-22 1334 CONT; \ f5bffecda951b5 Alexei Starovoitov 2014-07-22 1335 ALU_##OPCODE##_K: \ f5bffecda951b5 Alexei Starovoitov 2014-07-22 1336 DST = (u32) DST OP (u32) IMM; \ f5bffecda951b5 Alexei Starovoitov 2014-07-22 1337 CONT; f5bffecda951b5 Alexei Starovoitov 2014-07-22 1338 f5bffecda951b5 Alexei Starovoitov 2014-07-22 1339 ALU(ADD, +) f5bffecda951b5 Alexei Starovoitov 2014-07-22 1340 ALU(SUB, -) f5bffecda951b5 Alexei Starovoitov 2014-07-22 1341 ALU(AND, &) f5bffecda951b5 Alexei Starovoitov 2014-07-22 1342 ALU(OR, |) f5bffecda951b5 Alexei Starovoitov 2014-07-22 1343 ALU(LSH, <<) f5bffecda951b5 Alexei Starovoitov 2014-07-22 1344 ALU(RSH, >>) f5bffecda951b5 Alexei Starovoitov 2014-07-22 1345 ALU(XOR, ^) f5bffecda951b5 Alexei Starovoitov 2014-07-22 1346 ALU(MUL, *) f5bffecda951b5 Alexei Starovoitov 2014-07-22 1347 #undef ALU f5bffecda951b5 Alexei Starovoitov 2014-07-22 1348 ALU_NEG: f5bffecda951b5 Alexei Starovoitov 2014-07-22 1349 DST = (u32) -DST; f5bffecda951b5 Alexei Starovoitov 2014-07-22 1350 CONT; f5bffecda951b5 Alexei Starovoitov 2014-07-22 1351 ALU64_NEG: f5bffecda951b5 Alexei Starovoitov 2014-07-22 1352 DST = -DST; f5bffecda951b5 Alexei Starovoitov 2014-07-22 1353 CONT; f5bffecda951b5 Alexei Starovoitov 2014-07-22 1354 ALU_MOV_X: f5bffecda951b5 Alexei Starovoitov 2014-07-22 1355 DST = (u32) SRC; f5bffecda951b5 Alexei Starovoitov 2014-07-22 1356 CONT; f5bffecda951b5 Alexei Starovoitov 2014-07-22 1357 ALU_MOV_K: f5bffecda951b5 Alexei Starovoitov 2014-07-22 1358 DST = (u32) IMM; f5bffecda951b5 Alexei Starovoitov 2014-07-22 1359 CONT; f5bffecda951b5 Alexei Starovoitov 2014-07-22 1360 ALU64_MOV_X: f5bffecda951b5 Alexei Starovoitov 2014-07-22 1361 DST = SRC; f5bffecda951b5 Alexei Starovoitov 2014-07-22 1362 CONT; f5bffecda951b5 Alexei Starovoitov 2014-07-22 1363 ALU64_MOV_K: f5bffecda951b5 Alexei Starovoitov 2014-07-22 1364 DST = IMM; f5bffecda951b5 Alexei Starovoitov 2014-07-22 1365 CONT; 02ab695bb37ee9 Alexei Starovoitov 2014-09-04 1366 LD_IMM_DW: 02ab695bb37ee9 Alexei Starovoitov 2014-09-04 1367 DST = (u64) (u32) insn[0].imm | ((u64) (u32) insn[1].imm) << 32; 02ab695bb37ee9 Alexei Starovoitov 2014-09-04 1368 insn++; 02ab695bb37ee9 Alexei Starovoitov 2014-09-04 1369 CONT; 2dc6b100f928aa Jiong Wang 2018-12-05 1370 ALU_ARSH_X: 75672dda27bd00 Jiong Wang 2019-06-25 1371 DST = (u64) (u32) (((s32) DST) >> SRC); 2dc6b100f928aa Jiong Wang 2018-12-05 1372 CONT; 2dc6b100f928aa Jiong Wang 2018-12-05 1373 ALU_ARSH_K: 75672dda27bd00 Jiong Wang 2019-06-25 1374 DST = (u64) (u32) (((s32) DST) >> IMM); 2dc6b100f928aa Jiong Wang 2018-12-05 1375 CONT; f5bffecda951b5 Alexei Starovoitov 2014-07-22 1376 ALU64_ARSH_X: f5bffecda951b5 Alexei Starovoitov 2014-07-22 1377 (*(s64 *) &DST) >>= SRC; f5bffecda951b5 Alexei Starovoitov 2014-07-22 1378 CONT; f5bffecda951b5 Alexei Starovoitov 2014-07-22 1379 ALU64_ARSH_K: f5bffecda951b5 Alexei Starovoitov 2014-07-22 1380 (*(s64 *) &DST) >>= IMM; f5bffecda951b5 Alexei Starovoitov 2014-07-22 1381 CONT; f5bffecda951b5 Alexei Starovoitov 2014-07-22 1382 ALU64_MOD_X: 144cd91c4c2bce Daniel Borkmann 2019-01-03 1383 div64_u64_rem(DST, SRC, &AX); 144cd91c4c2bce Daniel Borkmann 2019-01-03 1384 DST = AX; f5bffecda951b5 Alexei Starovoitov 2014-07-22 1385 CONT; f5bffecda951b5 Alexei Starovoitov 2014-07-22 1386 ALU_MOD_X: 144cd91c4c2bce Daniel Borkmann 2019-01-03 1387 AX = (u32) DST; 144cd91c4c2bce Daniel Borkmann 2019-01-03 1388 DST = do_div(AX, (u32) SRC); f5bffecda951b5 Alexei Starovoitov 2014-07-22 1389 CONT; f5bffecda951b5 Alexei Starovoitov 2014-07-22 1390 ALU64_MOD_K: 144cd91c4c2bce Daniel Borkmann 2019-01-03 1391 div64_u64_rem(DST, IMM, &AX); 144cd91c4c2bce Daniel Borkmann 2019-01-03 1392 DST = AX; f5bffecda951b5 Alexei Starovoitov 2014-07-22 1393 CONT; f5bffecda951b5 Alexei Starovoitov 2014-07-22 1394 ALU_MOD_K: 144cd91c4c2bce Daniel Borkmann 2019-01-03 1395 AX = (u32) DST; 144cd91c4c2bce Daniel Borkmann 2019-01-03 1396 DST = do_div(AX, (u32) IMM); f5bffecda951b5 Alexei Starovoitov 2014-07-22 1397 CONT; f5bffecda951b5 Alexei Starovoitov 2014-07-22 1398 ALU64_DIV_X: 876a7ae65b86d8 Alexei Starovoitov 2015-04-27 1399 DST = div64_u64(DST, SRC); f5bffecda951b5 Alexei Starovoitov 2014-07-22 1400 CONT; f5bffecda951b5 Alexei Starovoitov 2014-07-22 1401 ALU_DIV_X: 144cd91c4c2bce Daniel Borkmann 2019-01-03 1402 AX = (u32) DST; 144cd91c4c2bce Daniel Borkmann 2019-01-03 1403 do_div(AX, (u32) SRC); 144cd91c4c2bce Daniel Borkmann 2019-01-03 1404 DST = (u32) AX; f5bffecda951b5 Alexei Starovoitov 2014-07-22 1405 CONT; f5bffecda951b5 Alexei Starovoitov 2014-07-22 1406 ALU64_DIV_K: 876a7ae65b86d8 Alexei Starovoitov 2015-04-27 1407 DST = div64_u64(DST, IMM); f5bffecda951b5 Alexei Starovoitov 2014-07-22 1408 CONT; f5bffecda951b5 Alexei Starovoitov 2014-07-22 1409 ALU_DIV_K: 144cd91c4c2bce Daniel Borkmann 2019-01-03 1410 AX = (u32) DST; 144cd91c4c2bce Daniel Borkmann 2019-01-03 1411 do_div(AX, (u32) IMM); 144cd91c4c2bce Daniel Borkmann 2019-01-03 1412 DST = (u32) AX; f5bffecda951b5 Alexei Starovoitov 2014-07-22 1413 CONT; f5bffecda951b5 Alexei Starovoitov 2014-07-22 1414 ALU_END_TO_BE: f5bffecda951b5 Alexei Starovoitov 2014-07-22 1415 switch (IMM) { f5bffecda951b5 Alexei Starovoitov 2014-07-22 1416 case 16: f5bffecda951b5 Alexei Starovoitov 2014-07-22 @1417 DST = (__force u16) cpu_to_be16(DST); f5bffecda951b5 Alexei Starovoitov 2014-07-22 1418 break; f5bffecda951b5 Alexei Starovoitov 2014-07-22 1419 case 32: f5bffecda951b5 Alexei Starovoitov 2014-07-22 @1420 DST = (__force u32) cpu_to_be32(DST); f5bffecda951b5 Alexei Starovoitov 2014-07-22 1421 break; f5bffecda951b5 Alexei Starovoitov 2014-07-22 1422 case 64: f5bffecda951b5 Alexei Starovoitov 2014-07-22 @1423 DST = (__force u64) cpu_to_be64(DST); f5bffecda951b5 Alexei Starovoitov 2014-07-22 1424 break; f5bffecda951b5 Alexei Starovoitov 2014-07-22 1425 } f5bffecda951b5 Alexei Starovoitov 2014-07-22 1426 CONT; f5bffecda951b5 Alexei Starovoitov 2014-07-22 1427 ALU_END_TO_LE: f5bffecda951b5 Alexei Starovoitov 2014-07-22 1428 switch (IMM) { f5bffecda951b5 Alexei Starovoitov 2014-07-22 1429 case 16: f5bffecda951b5 Alexei Starovoitov 2014-07-22 @1430 DST = (__force u16) cpu_to_le16(DST); f5bffecda951b5 Alexei Starovoitov 2014-07-22 1431 break; f5bffecda951b5 Alexei Starovoitov 2014-07-22 1432 case 32: f5bffecda951b5 Alexei Starovoitov 2014-07-22 @1433 DST = (__force u32) cpu_to_le32(DST); f5bffecda951b5 Alexei Starovoitov 2014-07-22 1434 break; f5bffecda951b5 Alexei Starovoitov 2014-07-22 1435 case 64: f5bffecda951b5 Alexei Starovoitov 2014-07-22 @1436 DST = (__force u64) cpu_to_le64(DST); f5bffecda951b5 Alexei Starovoitov 2014-07-22 1437 break; f5bffecda951b5 Alexei Starovoitov 2014-07-22 1438 } f5bffecda951b5 Alexei Starovoitov 2014-07-22 1439 CONT; f5bffecda951b5 Alexei Starovoitov 2014-07-22 1440 f5bffecda951b5 Alexei Starovoitov 2014-07-22 1441 /* CALL */ f5bffecda951b5 Alexei Starovoitov 2014-07-22 1442 JMP_CALL: f5bffecda951b5 Alexei Starovoitov 2014-07-22 1443 /* Function call scratches BPF_R1-BPF_R5 registers, f5bffecda951b5 Alexei Starovoitov 2014-07-22 1444 * preserves BPF_R6-BPF_R9, and stores return value f5bffecda951b5 Alexei Starovoitov 2014-07-22 1445 * into BPF_R0. f5bffecda951b5 Alexei Starovoitov 2014-07-22 1446 */ f5bffecda951b5 Alexei Starovoitov 2014-07-22 1447 BPF_R0 = (__bpf_call_base + insn->imm)(BPF_R1, BPF_R2, BPF_R3, f5bffecda951b5 Alexei Starovoitov 2014-07-22 1448 BPF_R4, BPF_R5); f5bffecda951b5 Alexei Starovoitov 2014-07-22 1449 CONT; f5bffecda951b5 Alexei Starovoitov 2014-07-22 1450 1ea47e01ad6ea0 Alexei Starovoitov 2017-12-14 1451 JMP_CALL_ARGS: 1ea47e01ad6ea0 Alexei Starovoitov 2017-12-14 1452 BPF_R0 = (__bpf_call_base_args + insn->imm)(BPF_R1, BPF_R2, 1ea47e01ad6ea0 Alexei Starovoitov 2017-12-14 1453 BPF_R3, BPF_R4, 1ea47e01ad6ea0 Alexei Starovoitov 2017-12-14 1454 BPF_R5, 1ea47e01ad6ea0 Alexei Starovoitov 2017-12-14 1455 insn + insn->off + 1); 1ea47e01ad6ea0 Alexei Starovoitov 2017-12-14 1456 CONT; 1ea47e01ad6ea0 Alexei Starovoitov 2017-12-14 1457 04fd61ab36ec06 Alexei Starovoitov 2015-05-19 1458 JMP_TAIL_CALL: { 04fd61ab36ec06 Alexei Starovoitov 2015-05-19 1459 struct bpf_map *map = (struct bpf_map *) (unsigned long) BPF_R2; 04fd61ab36ec06 Alexei Starovoitov 2015-05-19 1460 struct bpf_array *array = container_of(map, struct bpf_array, map); 04fd61ab36ec06 Alexei Starovoitov 2015-05-19 1461 struct bpf_prog *prog; 90caccdd8cc021 Alexei Starovoitov 2017-10-03 1462 u32 index = BPF_R3; 04fd61ab36ec06 Alexei Starovoitov 2015-05-19 1463 04fd61ab36ec06 Alexei Starovoitov 2015-05-19 1464 if (unlikely(index >= array->map.max_entries)) 04fd61ab36ec06 Alexei Starovoitov 2015-05-19 1465 goto out; 04fd61ab36ec06 Alexei Starovoitov 2015-05-19 1466 if (unlikely(tail_call_cnt > MAX_TAIL_CALL_CNT)) 04fd61ab36ec06 Alexei Starovoitov 2015-05-19 1467 goto out; 04fd61ab36ec06 Alexei Starovoitov 2015-05-19 1468 04fd61ab36ec06 Alexei Starovoitov 2015-05-19 1469 tail_call_cnt++; 04fd61ab36ec06 Alexei Starovoitov 2015-05-19 1470 2a36f0b92eb638 Wang Nan 2015-08-06 1471 prog = READ_ONCE(array->ptrs[index]); 1ca1cc98bf7418 Daniel Borkmann 2016-06-28 1472 if (!prog) 04fd61ab36ec06 Alexei Starovoitov 2015-05-19 1473 goto out; 04fd61ab36ec06 Alexei Starovoitov 2015-05-19 1474 c4675f935399cb Daniel Borkmann 2015-07-13 1475 /* ARG1 at this point is guaranteed to point to CTX from c4675f935399cb Daniel Borkmann 2015-07-13 1476 * the verifier side due to the fact that the tail call is c4675f935399cb Daniel Borkmann 2015-07-13 1477 * handeled like a helper, that is, bpf_tail_call_proto, c4675f935399cb Daniel Borkmann 2015-07-13 1478 * where arg1_type is ARG_PTR_TO_CTX. c4675f935399cb Daniel Borkmann 2015-07-13 1479 */ 04fd61ab36ec06 Alexei Starovoitov 2015-05-19 1480 insn = prog->insnsi; 04fd61ab36ec06 Alexei Starovoitov 2015-05-19 1481 goto select_insn; 04fd61ab36ec06 Alexei Starovoitov 2015-05-19 1482 out: 04fd61ab36ec06 Alexei Starovoitov 2015-05-19 1483 CONT; 04fd61ab36ec06 Alexei Starovoitov 2015-05-19 1484 } f5bffecda951b5 Alexei Starovoitov 2014-07-22 1485 JMP_JA: f5bffecda951b5 Alexei Starovoitov 2014-07-22 1486 insn += insn->off; f5bffecda951b5 Alexei Starovoitov 2014-07-22 1487 CONT; f5bffecda951b5 Alexei Starovoitov 2014-07-22 1488 JMP_EXIT: f5bffecda951b5 Alexei Starovoitov 2014-07-22 1489 return BPF_R0; 503a8865a47752 Jiong Wang 2019-01-26 1490 /* JMP */ 503a8865a47752 Jiong Wang 2019-01-26 1491 #define COND_JMP(SIGN, OPCODE, CMP_OP) \ 503a8865a47752 Jiong Wang 2019-01-26 1492 JMP_##OPCODE##_X: \ 503a8865a47752 Jiong Wang 2019-01-26 1493 if ((SIGN##64) DST CMP_OP (SIGN##64) SRC) { \ 503a8865a47752 Jiong Wang 2019-01-26 1494 insn += insn->off; \ 503a8865a47752 Jiong Wang 2019-01-26 1495 CONT_JMP; \ 503a8865a47752 Jiong Wang 2019-01-26 1496 } \ 503a8865a47752 Jiong Wang 2019-01-26 1497 CONT; \ 503a8865a47752 Jiong Wang 2019-01-26 1498 JMP32_##OPCODE##_X: \ 503a8865a47752 Jiong Wang 2019-01-26 1499 if ((SIGN##32) DST CMP_OP (SIGN##32) SRC) { \ 503a8865a47752 Jiong Wang 2019-01-26 1500 insn += insn->off; \ 503a8865a47752 Jiong Wang 2019-01-26 1501 CONT_JMP; \ 503a8865a47752 Jiong Wang 2019-01-26 1502 } \ 503a8865a47752 Jiong Wang 2019-01-26 1503 CONT; \ 503a8865a47752 Jiong Wang 2019-01-26 1504 JMP_##OPCODE##_K: \ 503a8865a47752 Jiong Wang 2019-01-26 1505 if ((SIGN##64) DST CMP_OP (SIGN##64) IMM) { \ 503a8865a47752 Jiong Wang 2019-01-26 1506 insn += insn->off; \ 503a8865a47752 Jiong Wang 2019-01-26 1507 CONT_JMP; \ 503a8865a47752 Jiong Wang 2019-01-26 1508 } \ 503a8865a47752 Jiong Wang 2019-01-26 1509 CONT; \ 503a8865a47752 Jiong Wang 2019-01-26 1510 JMP32_##OPCODE##_K: \ 503a8865a47752 Jiong Wang 2019-01-26 1511 if ((SIGN##32) DST CMP_OP (SIGN##32) IMM) { \ 503a8865a47752 Jiong Wang 2019-01-26 1512 insn += insn->off; \ 503a8865a47752 Jiong Wang 2019-01-26 1513 CONT_JMP; \ 503a8865a47752 Jiong Wang 2019-01-26 1514 } \ 503a8865a47752 Jiong Wang 2019-01-26 1515 CONT; 503a8865a47752 Jiong Wang 2019-01-26 1516 COND_JMP(u, JEQ, ==) 503a8865a47752 Jiong Wang 2019-01-26 1517 COND_JMP(u, JNE, !=) 503a8865a47752 Jiong Wang 2019-01-26 1518 COND_JMP(u, JGT, >) 503a8865a47752 Jiong Wang 2019-01-26 1519 COND_JMP(u, JLT, <) 503a8865a47752 Jiong Wang 2019-01-26 1520 COND_JMP(u, JGE, >=) 503a8865a47752 Jiong Wang 2019-01-26 1521 COND_JMP(u, JLE, <=) 503a8865a47752 Jiong Wang 2019-01-26 1522 COND_JMP(u, JSET, &) 503a8865a47752 Jiong Wang 2019-01-26 1523 COND_JMP(s, JSGT, >) 503a8865a47752 Jiong Wang 2019-01-26 1524 COND_JMP(s, JSLT, <) 503a8865a47752 Jiong Wang 2019-01-26 1525 COND_JMP(s, JSGE, >=) 503a8865a47752 Jiong Wang 2019-01-26 1526 COND_JMP(s, JSLE, <=) 503a8865a47752 Jiong Wang 2019-01-26 1527 #undef COND_JMP f5bffecda951b5 Alexei Starovoitov 2014-07-22 1528 /* STX and ST and LDX*/ f5bffecda951b5 Alexei Starovoitov 2014-07-22 1529 #define LDST(SIZEOP, SIZE) \ f5bffecda951b5 Alexei Starovoitov 2014-07-22 1530 STX_MEM_##SIZEOP: \ f5bffecda951b5 Alexei Starovoitov 2014-07-22 1531 *(SIZE *)(unsigned long) (DST + insn->off) = SRC; \ f5bffecda951b5 Alexei Starovoitov 2014-07-22 1532 CONT; \ f5bffecda951b5 Alexei Starovoitov 2014-07-22 1533 ST_MEM_##SIZEOP: \ f5bffecda951b5 Alexei Starovoitov 2014-07-22 1534 *(SIZE *)(unsigned long) (DST + insn->off) = IMM; \ f5bffecda951b5 Alexei Starovoitov 2014-07-22 1535 CONT; \ f5bffecda951b5 Alexei Starovoitov 2014-07-22 1536 LDX_MEM_##SIZEOP: \ f5bffecda951b5 Alexei Starovoitov 2014-07-22 1537 DST = *(SIZE *)(unsigned long) (SRC + insn->off); \ f5bffecda951b5 Alexei Starovoitov 2014-07-22 1538 CONT; f5bffecda951b5 Alexei Starovoitov 2014-07-22 1539 f5bffecda951b5 Alexei Starovoitov 2014-07-22 1540 LDST(B, u8) f5bffecda951b5 Alexei Starovoitov 2014-07-22 1541 LDST(H, u16) f5bffecda951b5 Alexei Starovoitov 2014-07-22 1542 LDST(W, u32) f5bffecda951b5 Alexei Starovoitov 2014-07-22 1543 LDST(DW, u64) f5bffecda951b5 Alexei Starovoitov 2014-07-22 1544 #undef LDST f5bffecda951b5 Alexei Starovoitov 2014-07-22 1545 STX_XADD_W: /* lock xadd *(u32 *)(dst_reg + off16) += src_reg */ f5bffecda951b5 Alexei Starovoitov 2014-07-22 1546 atomic_add((u32) SRC, (atomic_t *)(unsigned long) f5bffecda951b5 Alexei Starovoitov 2014-07-22 1547 (DST + insn->off)); f5bffecda951b5 Alexei Starovoitov 2014-07-22 1548 CONT; f5bffecda951b5 Alexei Starovoitov 2014-07-22 1549 STX_XADD_DW: /* lock xadd *(u64 *)(dst_reg + off16) += src_reg */ f5bffecda951b5 Alexei Starovoitov 2014-07-22 1550 atomic64_add((u64) SRC, (atomic64_t *)(unsigned long) f5bffecda951b5 Alexei Starovoitov 2014-07-22 1551 (DST + insn->off)); f5bffecda951b5 Alexei Starovoitov 2014-07-22 1552 CONT; f5bffecda951b5 Alexei Starovoitov 2014-07-22 1553 f5bffecda951b5 Alexei Starovoitov 2014-07-22 1554 default_label: 5e581dad4fec0e Daniel Borkmann 2018-01-26 1555 /* If we ever reach this, we have a bug somewhere. Die hard here 5e581dad4fec0e Daniel Borkmann 2018-01-26 1556 * instead of just returning 0; we could be somewhere in a subprog, 5e581dad4fec0e Daniel Borkmann 2018-01-26 1557 * so execution could continue otherwise which we do /not/ want. 5e581dad4fec0e Daniel Borkmann 2018-01-26 1558 * 5e581dad4fec0e Daniel Borkmann 2018-01-26 1559 * Note, verifier whitelists all opcodes in bpf_opcode_in_insntable(). 5e581dad4fec0e Daniel Borkmann 2018-01-26 1560 */ 5e581dad4fec0e Daniel Borkmann 2018-01-26 1561 pr_warn("BPF interpreter: unknown opcode %02x\n", insn->code); 5e581dad4fec0e Daniel Borkmann 2018-01-26 1562 BUG_ON(1); f5bffecda951b5 Alexei Starovoitov 2014-07-22 1563 return 0; f5bffecda951b5 Alexei Starovoitov 2014-07-22 1564 } f696b8f471ec98 Alexei Starovoitov 2017-05-30 1565 :::::: The code at line 1417 was first introduced by commit :::::: f5bffecda951b59d0d3cdd616d68952abc52bc40 net: filter: split filter.c into two files :::::: TO: Alexei Starovoitov :::::: CC: David S. Miller --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation