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Date: Thu, 31 Oct 2019 00:29:04 +0800
From: kbuild test robot <lkp@...el.com>
To: Joe Perches <joe@...ches.com>
Cc: kbuild-all@...ts.01.org, Andrew Morton <akpm@...ux-foundation.org>,
linux-kernel <linux-kernel@...r.kernel.org>,
clang-built-linux@...glegroups.com
Subject: Re: [PATCH] compiler*.h: Add '__' prefix and suffix to all
__attribute__ #defines
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 <lkp@...el.com>
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 <ast@...mgrid.com>
:::::: CC: David S. Miller <davem@...emloft.net>
---
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