tree: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master head: 5d1e9f437df5ef21e7567f1970a00fda3b5d1126 commit: ed2d9e1a26cca963ff5ed3b76326d70f7d8201a9 [212/221] bpf: Use size instead of pages in bpf_binary_header config: sparc-randconfig-r036-20220207 (https://download.01.org/0day-ci/archive/20220208/202202081815.gh1kFj08-lk...) compiler: sparc64-linux-gcc (GCC) 11.2.0 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 # https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git/commit/?... git remote add bpf-next https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git git fetch --no-tags bpf-next master git checkout ed2d9e1a26cca963ff5ed3b76326d70f7d8201a9 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=sparc SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): arch/sparc/net/bpf_jit_comp_64.c: In function 'bpf_int_jit_compile': 1602 | bpf_flush_icache(header, (u8 *)header + (header->pages * PAGE_SIZE)); | ^~ vim +1602 arch/sparc/net/bpf_jit_comp_64.c 5f5a641116391f David Miller 2017-12-22 1479 7a12b5031c6b94 David S. Miller 2017-04-17 1480 struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *prog) 7a12b5031c6b94 David S. Miller 2017-04-17 1481 { 7a12b5031c6b94 David S. Miller 2017-04-17 1482 struct bpf_prog *tmp, *orig_prog = prog; 5f5a641116391f David Miller 2017-12-22 1483 struct sparc64_jit_data *jit_data; 7a12b5031c6b94 David S. Miller 2017-04-17 1484 struct bpf_binary_header *header; c44768a33da81b David Miller 2018-11-26 1485 u32 prev_image_size, image_size; 7a12b5031c6b94 David S. Miller 2017-04-17 1486 bool tmp_blinded = false; 5f5a641116391f David Miller 2017-12-22 1487 bool extra_pass = false; 7a12b5031c6b94 David S. Miller 2017-04-17 1488 struct jit_ctx ctx; 7a12b5031c6b94 David S. Miller 2017-04-17 1489 u8 *image_ptr; c44768a33da81b David Miller 2018-11-26 1490 int pass, i; 7a12b5031c6b94 David S. Miller 2017-04-17 1491 60b58afc96c9df Alexei Starovoitov 2017-12-14 1492 if (!prog->jit_requested) 7a12b5031c6b94 David S. Miller 2017-04-17 1493 return orig_prog; 7a12b5031c6b94 David S. Miller 2017-04-17 1494 7a12b5031c6b94 David S. Miller 2017-04-17 1495 tmp = bpf_jit_blind_constants(prog); 7a12b5031c6b94 David S. Miller 2017-04-17 1496 /* If blinding was requested and we failed during blinding, 7a12b5031c6b94 David S. Miller 2017-04-17 1497 * we must fall back to the interpreter. 7a12b5031c6b94 David S. Miller 2017-04-17 1498 */ 7a12b5031c6b94 David S. Miller 2017-04-17 1499 if (IS_ERR(tmp)) 7a12b5031c6b94 David S. Miller 2017-04-17 1500 return orig_prog; 7a12b5031c6b94 David S. Miller 2017-04-17 1501 if (tmp != prog) { 7a12b5031c6b94 David S. Miller 2017-04-17 1502 tmp_blinded = true; 7a12b5031c6b94 David S. Miller 2017-04-17 1503 prog = tmp; 7a12b5031c6b94 David S. Miller 2017-04-17 1504 } 7a12b5031c6b94 David S. Miller 2017-04-17 1505 5f5a641116391f David Miller 2017-12-22 1506 jit_data = prog->aux->jit_data; 5f5a641116391f David Miller 2017-12-22 1507 if (!jit_data) { 5f5a641116391f David Miller 2017-12-22 1508 jit_data = kzalloc(sizeof(*jit_data), GFP_KERNEL); 5f5a641116391f David Miller 2017-12-22 1509 if (!jit_data) { 5f5a641116391f David Miller 2017-12-22 1510 prog = orig_prog; 5f5a641116391f David Miller 2017-12-22 1511 goto out; 5f5a641116391f David Miller 2017-12-22 1512 } 5f5a641116391f David Miller 2017-12-22 1513 prog->aux->jit_data = jit_data; 5f5a641116391f David Miller 2017-12-22 1514 } 5f5a641116391f David Miller 2017-12-22 1515 if (jit_data->ctx.offset) { 5f5a641116391f David Miller 2017-12-22 1516 ctx = jit_data->ctx; 5f5a641116391f David Miller 2017-12-22 1517 image_ptr = jit_data->image; 5f5a641116391f David Miller 2017-12-22 1518 header = jit_data->header; 5f5a641116391f David Miller 2017-12-22 1519 extra_pass = true; 5f5a641116391f David Miller 2017-12-22 1520 image_size = sizeof(u32) * ctx.idx; c44768a33da81b David Miller 2018-11-26 1521 prev_image_size = image_size; c44768a33da81b David Miller 2018-11-26 1522 pass = 1; 5f5a641116391f David Miller 2017-12-22 1523 goto skip_init_ctx; 5f5a641116391f David Miller 2017-12-22 1524 } 5f5a641116391f David Miller 2017-12-22 1525 7a12b5031c6b94 David S. Miller 2017-04-17 1526 memset(&ctx, 0, sizeof(ctx)); 7a12b5031c6b94 David S. Miller 2017-04-17 1527 ctx.prog = prog; 7a12b5031c6b94 David S. Miller 2017-04-17 1528 c44768a33da81b David Miller 2018-11-26 1529 ctx.offset = kmalloc_array(prog->len, sizeof(unsigned int), GFP_KERNEL); 7a12b5031c6b94 David S. Miller 2017-04-17 1530 if (ctx.offset == NULL) { 7a12b5031c6b94 David S. Miller 2017-04-17 1531 prog = orig_prog; 5f5a641116391f David Miller 2017-12-22 1532 goto out_off; 7a12b5031c6b94 David S. Miller 2017-04-17 1533 } 7a12b5031c6b94 David S. Miller 2017-04-17 1534 c44768a33da81b David Miller 2018-11-26 1535 /* Longest sequence emitted is for bswap32, 12 instructions. Pre-cook c44768a33da81b David Miller 2018-11-26 1536 * the offset array so that we converge faster. 7a12b5031c6b94 David S. Miller 2017-04-17 1537 */ c44768a33da81b David Miller 2018-11-26 1538 for (i = 0; i < prog->len; i++) c44768a33da81b David Miller 2018-11-26 1539 ctx.offset[i] = i * (12 * 4); c44768a33da81b David Miller 2018-11-26 1540 c44768a33da81b David Miller 2018-11-26 1541 prev_image_size = ~0U; c44768a33da81b David Miller 2018-11-26 1542 for (pass = 1; pass < 40; pass++) { c44768a33da81b David Miller 2018-11-26 1543 ctx.idx = 0; c44768a33da81b David Miller 2018-11-26 1544 c44768a33da81b David Miller 2018-11-26 1545 build_prologue(&ctx); 7a12b5031c6b94 David S. Miller 2017-04-17 1546 if (build_body(&ctx)) { 7a12b5031c6b94 David S. Miller 2017-04-17 1547 prog = orig_prog; 7a12b5031c6b94 David S. Miller 2017-04-17 1548 goto out_off; 7a12b5031c6b94 David S. Miller 2017-04-17 1549 } 7a12b5031c6b94 David S. Miller 2017-04-17 1550 build_epilogue(&ctx); 7a12b5031c6b94 David S. Miller 2017-04-17 1551 c44768a33da81b David Miller 2018-11-26 1552 if (bpf_jit_enable > 1) c44768a33da81b David Miller 2018-11-26 1553 pr_info("Pass %d: size = %u, seen = [%c%c%c%c%c%c]\n", pass, c44768a33da81b David Miller 2018-11-26 1554 ctx.idx * 4, c44768a33da81b David Miller 2018-11-26 1555 ctx.tmp_1_used ? '1' : ' ', c44768a33da81b David Miller 2018-11-26 1556 ctx.tmp_2_used ? '2' : ' ', c44768a33da81b David Miller 2018-11-26 1557 ctx.tmp_3_used ? '3' : ' ', c44768a33da81b David Miller 2018-11-26 1558 ctx.saw_frame_pointer ? 'F' : ' ', c44768a33da81b David Miller 2018-11-26 1559 ctx.saw_call ? 'C' : ' ', c44768a33da81b David Miller 2018-11-26 1560 ctx.saw_tail_call ? 'T' : ' '); c44768a33da81b David Miller 2018-11-26 1561 c44768a33da81b David Miller 2018-11-26 1562 if (ctx.idx * 4 == prev_image_size) c44768a33da81b David Miller 2018-11-26 1563 break; c44768a33da81b David Miller 2018-11-26 1564 prev_image_size = ctx.idx * 4; c44768a33da81b David Miller 2018-11-26 1565 cond_resched(); c44768a33da81b David Miller 2018-11-26 1566 } c44768a33da81b David Miller 2018-11-26 1567 7a12b5031c6b94 David S. Miller 2017-04-17 1568 /* Now we know the actual image size. */ 7a12b5031c6b94 David S. Miller 2017-04-17 1569 image_size = sizeof(u32) * ctx.idx; 7a12b5031c6b94 David S. Miller 2017-04-17 1570 header = bpf_jit_binary_alloc(image_size, &image_ptr, 7a12b5031c6b94 David S. Miller 2017-04-17 1571 sizeof(u32), jit_fill_hole); 7a12b5031c6b94 David S. Miller 2017-04-17 1572 if (header == NULL) { 7a12b5031c6b94 David S. Miller 2017-04-17 1573 prog = orig_prog; 7a12b5031c6b94 David S. Miller 2017-04-17 1574 goto out_off; 7a12b5031c6b94 David S. Miller 2017-04-17 1575 } 7a12b5031c6b94 David S. Miller 2017-04-17 1576 7a12b5031c6b94 David S. Miller 2017-04-17 1577 ctx.image = (u32 *)image_ptr; 5f5a641116391f David Miller 2017-12-22 1578 skip_init_ctx: 7a12b5031c6b94 David S. Miller 2017-04-17 1579 ctx.idx = 0; 7a12b5031c6b94 David S. Miller 2017-04-17 1580 7a12b5031c6b94 David S. Miller 2017-04-17 1581 build_prologue(&ctx); 7a12b5031c6b94 David S. Miller 2017-04-17 1582 7a12b5031c6b94 David S. Miller 2017-04-17 1583 if (build_body(&ctx)) { 7a12b5031c6b94 David S. Miller 2017-04-17 1584 bpf_jit_binary_free(header); 7a12b5031c6b94 David S. Miller 2017-04-17 1585 prog = orig_prog; 7a12b5031c6b94 David S. Miller 2017-04-17 1586 goto out_off; 7a12b5031c6b94 David S. Miller 2017-04-17 1587 } 7a12b5031c6b94 David S. Miller 2017-04-17 1588 7a12b5031c6b94 David S. Miller 2017-04-17 1589 build_epilogue(&ctx); 7a12b5031c6b94 David S. Miller 2017-04-17 1590 c44768a33da81b David Miller 2018-11-26 1591 if (ctx.idx * 4 != prev_image_size) { c44768a33da81b David Miller 2018-11-26 1592 pr_err("bpf_jit: Failed to converge, prev_size=%u size=%d\n", c44768a33da81b David Miller 2018-11-26 1593 prev_image_size, ctx.idx * 4); c44768a33da81b David Miller 2018-11-26 1594 bpf_jit_binary_free(header); c44768a33da81b David Miller 2018-11-26 1595 prog = orig_prog; c44768a33da81b David Miller 2018-11-26 1596 goto out_off; 7a12b5031c6b94 David S. Miller 2017-04-17 1597 } 7a12b5031c6b94 David S. Miller 2017-04-17 1598 7a12b5031c6b94 David S. Miller 2017-04-17 1599 if (bpf_jit_enable > 1) 7a12b5031c6b94 David S. Miller 2017-04-17 1600 bpf_jit_dump(prog->len, image_size, pass, ctx.image); 7a12b5031c6b94 David S. Miller 2017-04-17 1601 7a12b5031c6b94 David S. Miller 2017-04-17 @1602 bpf_flush_icache(header, (u8 *)header + (header->pages * PAGE_SIZE)); :::::: The code at line 1602 was first introduced by commit :::::: 7a12b5031c6b947cc13918237ae652b536243b76 sparc64: Add eBPF JIT. :::::: TO: David S. Miller <davem(a)davemloft.net&gt; :::::: CC: David S. Miller <davem(a)davemloft.net&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org