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=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 9452CC83000 for ; Tue, 28 Apr 2020 10:32:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7A86C206A1 for ; Tue, 28 Apr 2020 10:32:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726312AbgD1Kc1 (ORCPT ); Tue, 28 Apr 2020 06:32:27 -0400 Received: from mga02.intel.com ([134.134.136.20]:36872 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726336AbgD1Kc1 (ORCPT ); Tue, 28 Apr 2020 06:32:27 -0400 IronPort-SDR: oowLotwnvZO/Y8TM7AUK/g4JhTnMAJO+niuJi1uV0pRbISTxIhOTPNikJWjTagDfcCTQnIst4W nJjpZcHPwmdw== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 Apr 2020 03:32:26 -0700 IronPort-SDR: NQwlzcDjyUdR0pVNzrOJiYWp2cJssqZ8FKRIZfP/7aTGoTpg+cq+OxzPh26gPC5Ef1cUuGxKLq 6pTLhnUgqKDw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,327,1583222400"; d="scan'208";a="367464035" Received: from fbackhou-mobl.ger.corp.intel.com (HELO [10.252.53.234]) ([10.252.53.234]) by fmsmga001.fm.intel.com with ESMTP; 28 Apr 2020 03:32:24 -0700 To: bpf@vger.kernel.org From: Mikko Ylinen Subject: -EBUSY with some selftests on 5.7-rcX Message-ID: Date: Tue, 28 Apr 2020 13:32:24 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.7.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: bpf-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org Hi, I'm testing BPF LSM and wanted to verify my setup by running the test_lsm selftests (./test_progs -vv -t test_lsm) but it fails: libbpf: loading object 'lsm' from buffer libbpf: section(1) .strtab, size 306, link 0, flags 0, type=3 libbpf: skip section(1) .strtab libbpf: section(2) .text, size 0, link 0, flags 6, type=1 libbpf: skip section(2) .text libbpf: section(3) lsm/file_mprotect, size 192, link 0, flags 6, type=1 libbpf: found program lsm/file_mprotect libbpf: section(4) .rellsm/file_mprotect, size 32, link 25, flags 0, type=9 libbpf: section(5) lsm/bprm_committed_creds, size 104, link 0, flags 6, type=1 libbpf: found program lsm/bprm_committed_creds libbpf: section(6) .rellsm/bprm_committed_creds, size 32, link 25, flags 0, type=9 libbpf: section(7) license, size 4, link 0, flags 3, type=1 libbpf: license of lsm is GPL libbpf: section(8) .bss, size 12, link 0, flags 3, type=8 libbpf: section(9) .debug_str, size 133448, link 0, flags 30, type=1 libbpf: skip section(9) .debug_str libbpf: section(10) .debug_loc, size 428, link 0, flags 0, type=1 libbpf: skip section(10) .debug_loc libbpf: section(11) .rel.debug_loc, size 112, link 25, flags 0, type=9 libbpf: skip relo .rel.debug_loc(11) for section(10) libbpf: section(12) .debug_abbrev, size 901, link 0, flags 0, type=1 libbpf: skip section(12) .debug_abbrev libbpf: section(13) .debug_info, size 223699, link 0, flags 0, type=1 libbpf: skip section(13) .debug_info libbpf: section(14) .rel.debug_info, size 112, link 25, flags 0, type=9 libbpf: skip relo .rel.debug_info(14) for section(13) libbpf: section(15) .debug_ranges, size 96, link 0, flags 0, type=1 libbpf: skip section(15) .debug_ranges libbpf: section(16) .rel.debug_ranges, size 128, link 25, flags 0, type=9 libbpf: skip relo .rel.debug_ranges(16) for section(15) libbpf: section(17) .BTF, size 5421, link 0, flags 0, type=1 libbpf: section(18) .rel.BTF, size 64, link 25, flags 0, type=9 libbpf: skip relo .rel.BTF(18) for section(17) libbpf: section(19) .BTF.ext, size 484, link 0, flags 0, type=1 libbpf: section(20) .rel.BTF.ext, size 416, link 25, flags 0, type=9 libbpf: skip relo .rel.BTF.ext(20) for section(19) libbpf: section(21) .debug_frame, size 64, link 0, flags 0, type=1 libbpf: skip section(21) .debug_frame libbpf: section(22) .rel.debug_frame, size 32, link 25, flags 0, type=9 libbpf: skip relo .rel.debug_frame(22) for section(21) libbpf: section(23) .debug_line, size 227, link 0, flags 0, type=1 libbpf: skip section(23) .debug_line libbpf: section(24) .rel.debug_line, size 32, link 25, flags 0, type=9 libbpf: skip relo .rel.debug_line(24) for section(23) libbpf: section(25) .symtab, size 288, link 1, flags 0, type=2 libbpf: looking for externs among 12 symbols... libbpf: collected 0 externs total libbpf: map 'lsm.bss' (global data): at sec_idx 8, offset 0, flags 400. libbpf: map 0 is "lsm.bss" libbpf: collecting relocating info for: 'lsm/file_mprotect' libbpf: relo for shdr 8, symb 8, value 0, type 1, bind 1, name 232 ('monitored_pid'), insn 12 libbpf: found data map 0 (lsm.bss, sec 8, off 0) for insn 12 libbpf: relo for shdr 8, symb 9, value 4, type 1, bind 1, name 34 ('mprotect_count'), insn 17 libbpf: found data map 0 (lsm.bss, sec 8, off 0) for insn 17 libbpf: collecting relocating info for: 'lsm/bprm_committed_creds' libbpf: relo for shdr 8, symb 8, value 0, type 1, bind 1, name 232 ('monitored_pid'), insn 1 libbpf: found data map 0 (lsm.bss, sec 8, off 0) for insn 1 libbpf: relo for shdr 8, symb 7, value 8, type 1, bind 1, name 49 ('bprm_count'), insn 6 libbpf: found data map 0 (lsm.bss, sec 8, off 0) for insn 6 libbpf: loading kernel BTF '/sys/kernel/btf/vmlinux': 0 libbpf: created map lsm.bss: fd=4 libbpf: loading kernel BTF '/sys/kernel/btf/vmlinux': 0 libbpf: prog 'lsm/file_mprotect': performing 4 CO-RE offset relocs libbpf: prog 'lsm/file_mprotect': relo #0: kind 0, spec is [6] vm_area_struct + 0:6 => 64.0 @ &x[0].vm_mm libbpf: [6] vm_area_struct: found candidate [465] vm_area_struct libbpf: prog 'lsm/file_mprotect': relo #0: matching candidate #0 vm_area_struct against spec [465] vm_area_struct + 0:6 => 64.0 @ &x[0].vm_mm: 1 libbpf: prog 'lsm/file_mprotect': relo #0: patched insn #5 (LDX/ST/STX) off 64 -> 64 libbpf: prog 'lsm/file_mprotect': relo #1: kind 0, spec is [31] mm_struct + 0:0:35 => 304.0 @ &x[0].start_stack libbpf: [31] mm_struct: found candidate [260] mm_struct libbpf: prog 'lsm/file_mprotect': relo #1: matching candidate #0 mm_struct against spec [260] mm_struct + 0:0:35 => 304.0 @ &x[0].start_stack: 1 libbpf: prog 'lsm/file_mprotect': relo #1: patched insn #7 (LDX/ST/STX) off 304 -> 304 libbpf: prog 'lsm/file_mprotect': relo #2: kind 0, spec is [6] vm_area_struct + 0:0 => 0.0 @ &x[0].vm_start libbpf: prog 'lsm/file_mprotect': relo #2: matching candidate #0 vm_area_struct against spec [465] vm_area_struct + 0:0 => 0.0 @ &x[0].vm_start: 1 libbpf: prog 'lsm/file_mprotect': relo #2: patched insn #8 (LDX/ST/STX) off 0 -> 0 libbpf: prog 'lsm/file_mprotect': relo #3: kind 0, spec is [6] vm_area_struct + 0:1 => 8.0 @ &x[0].vm_end libbpf: prog 'lsm/file_mprotect': relo #3: matching candidate #0 vm_area_struct against spec [465] vm_area_struct + 0:1 => 8.0 @ &x[0].vm_end: 1 libbpf: prog 'lsm/file_mprotect': relo #3: patched insn #10 (LDX/ST/STX) off 8 -> 8 test_test_lsm:PASS:skel_load 0 nsec libbpf: program 'lsm/file_mprotect': failed to attach: Device or resource busy libbpf: failed to auto-attach program 'test_int_hook': -16 test_test_lsm:FAIL:attach lsm attach failed: -16 #70 test_lsm:FAIL Summary: 0/0 PASSED, 0 SKIPPED, 1 FAILED I get -EBUSY with fentry_fexit test too: # ./test_progs -t fentry_fexit test_fentry_fexit:PASS:fentry_skel_load 0 nsec test_fentry_fexit:PASS:fexit_skel_load 0 nsec libbpf: program 'fentry/bpf_fentry_test1': failed to attach: Device or resource busy libbpf: failed to auto-attach program 'test1': -16 test_fentry_fexit:FAIL:fentry_attach fentry attach failed: -16 #13 fentry_fexit:FAIL Summary: 0/0 PASSED, 0 SKIPPED, 1 FAILED However, btf_dump is OK: # ./test_progs -t btf_dump #5/1 btf_dump: syntax:OK #5/2 btf_dump: ordering:OK #5/3 btf_dump: padding:OK #5/4 btf_dump: packing:OK #5/5 btf_dump: bitfields:OK #5/6 btf_dump: multidim:OK #5/7 btf_dump: namespacing:OK #5 btf_dump:OK Summary: 1/7 PASSED, 0 SKIPPED, 0 FAILED Any feedback what to check? I don't have any other tests running in parallel. # clang --version clang version 10.0.0 Target: x86_64-generic-linux Thread model: posix InstalledDir: /usr/bin # pahole --version v1.16 5.7-rc3 -- Regards, Mikko