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Sat, 29 Aug 2020 13:09:44 +0200 Received: from p5b13abb5.dip0.t-ipconnect.de ([91.19.171.181] helo=[192.168.178.159]) by inpost2.zedat.fu-berlin.de (Exim 4.93) with esmtpsa (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (envelope-from ) id 1kByjw-001PBY-A6; Sat, 29 Aug 2020 13:09:44 +0200 Subject: Re: [PATCH 3/4] sh: Add SECCOMP_FILTER To: Rich Felker Cc: Michael Karcher , linux-sh@vger.kernel.org, linux-kernel@vger.kernel.org, Yoshinori Sato References: <20200722231322.419642-1-kernel@mkarcher.dialup.fu-berlin.de> <20200722231322.419642-3-kernel@mkarcher.dialup.fu-berlin.de> <20200828155024.GX3265@brightrain.aerifal.cx> <20200828163057.GY3265@brightrain.aerifal.cx> <82b625c2-23cb-69a4-7495-39427430c306@physik.fu-berlin.de> <20200828170259.GZ3265@brightrain.aerifal.cx> <20200829004939.GB3265@brightrain.aerifal.cx> From: John Paul Adrian Glaubitz Autocrypt: addr=glaubitz@physik.fu-berlin.de; keydata= mQINBE3JE9wBEADMrYGNfz3oz6XLw9XcWvuIxIlPWoTyw9BxTicfGAv0d87wngs9U+d52t/R EggPePf34gb7/k8FBY1IgyxnZEB5NxUb1WtW0M3GUxpPx6gBZqOm7SK1ZW3oSORw+T7Aezl3 Zq4Nr4Nptqx7fnLpXfRDs5iYO/GX8WuL8fkGS/gIXtxKewd0LkTlb6jq9KKq8qn8/BN5YEKq JlM7jsENyA5PIe2npN3MjEg6p+qFrmrzJRuFjjdf5vvGfzskrXCAKGlNjMMA4TgZvugOFmBI /iSyV0IOaj0uKhes0ZNX+lQFrOB4j6I5fTBy7L/T3W/pCWo3wVkknNYa8TDYT73oIZ7Aimv+ k7OzRfnxsSOAZT8Re1Yt8mvzr6FHVFjr/VdyTtO5JgQZ6LEmvo4Ro+2ByBmCHORCQ0NJhD1U 3avjGfvfslG999W0WEZLTeaGkBAN1yG/1bgGAytQQkD9NsVXqBy7S3LVv9bB844ysW5Aj1nv tgIz14E2WL8rbpfjJMXi7B5ha6Lxf3rFOgxpr6ZoEn+bGG4hmrO+/ReA4SerfMqwSTnjZsZv xMJsx2B9c8DaZE8GsA4I6lsihbJmXhw8i7Cta8Dx418wtEbXhL6m/UEk60O7QD1VBgGqDMnJ DFSlvKa9D+tZde/kHSNmQmLLzxtDbNgBgmR0jUlmxirijnm8bwARAQABtFRKb2huIFBhdWwg QWRyaWFuIEdsYXViaXR6IChGcmVpZSBVbml2ZXJzaXRhZXQgQmVybGluKSA8Z2xhdWJpdHpA cGh5c2lrLmZ1LWJlcmxpbi5kZT6JAlEEEwEIADsCGwMFCwkIBwMFFQoJCAsFFgIDAQACHgEC F4AWIQRi/4p1hOApVpVGAAZ0Jjs39bX5EwUCWhQoUgIZAQAKCRB0Jjs39bX5Ez/ID/98r9c4 WUSgOHVPSMVcOVziMOi+zPWfF1OhOXW+atpTM4LSSp66196xOlDFHOdNNmO6kxckXAX9ptvp Bc0mRxa7OrC168fKzqR7P75eTsJnVaOu+uI/vvgsbUIosYdkkekCxDAbYCUwmzNotIspnFbx iSPMNrpw7Ud/yQkS9TDYeXnrZDhBp7p5+naWCD/yMvh7yVCA4Ea8+xDVoX+kjv6EHJrwVupO pMa39cGs2rKYZbWTazcflKH+bXG3FHBrwh9XRjA6A1CTeC/zTVNgGF6wvw/qT2x9tS7WeeZ1 jvBCJub2cb07qIfuvxXiGcYGr+W4z9GuLCiWsMmoff/Gmo1aeMZDRYKLAZLGlEr6zkYh1Abt iz0YLqIYVbZAnf8dCjmYhuwPq77IeqSjqUqI2Cb0oOOlwRKVWDlqAeo0Bh8DrvZvBAojJf4H nQZ/pSz0yaRed/0FAmkVfV+1yR6BtRXhkRF6NCmguSITC96IzE26C6n5DBb43MR7Ga/mof4M UufnKADNG4qz57CBwENHyx6ftWJeWZNdRZq10o0NXuCJZf/iulHCWS/hFOM5ygfONq1Vsj2Z DSWvVpSLj+Ufd2QnmsnrCr1ZGcl72OC24AmqFWJY+IyReHWpuABEVZVeVDQooJ0K4yqucmrF R7HyH7oZGgR0CgYHCI+9yhrXHrQpyLkCDQRNyRQuARAArCaWhVbMXw9iHmMH0BN/TuSmeKtV h/+QOT5C5Uw+XJ3A+OHr9rB+SpndJEcDIhv70gLrpEuloXhZI9VYazfTv6lrkCZObXq/NgDQ Mnu+9E/E/PE9irqnZZOMWpurQRh41MibRii0iSr+AH2IhRL6CN2egZID6f93Cdu7US53ZqIx bXoguqGB2CK115bcnsswMW9YiVegFA5J9dAMsCI9/6M8li+CSYICi9gq0LdpODdsVfaxmo4+ xYFdXoDN33b8Yyzhbh/I5gtVIRpfL+Yjfk8xAsfz78wzifSDckSB3NGPAXvs6HxKc50bvf+P 6t2tLpmB/KrpozlZazq16iktY97QulyEY9JWCiEgDs6EKb4wTx+lUe4yS9eo95cBV+YlL+BX kJSAMyxgSOy35BeBaeUSIrYqfHpbNn6/nidwDhg/nxyJs8mPlBvHiCLwotje2AhtYndDEhGQ KEtEaMQEhDi9MsCGHe+00QegCv3FRveHwzGphY1YlRItLjF4TcFz1SsHn30e7uLTDe/pUMZU Kd1xU73WWr0NlWG1g49ITyaBpwdv/cs/RQ5laYYeivnag81TcPCDbTm7zXiwo53aLQOZj4u3 gSQvAUhgYTQUstMdkOMOn0PSIpyVAq3zrEFEYf7bNSTcdGrgwCuCBe4DgI3Vu4LOoAeI428t 2dj1K1EAEQEAAYkCHwQYAQgACQUCTckULgIbDAAKCRB0Jjs39bX5E683EAC1huywL4BlxTj7 FTm7FiKd5/KEH5/oaxLQN26mn8yRkP/L3xwiqXxdd0hnrPyUe8mUOrSg7KLMul+pSRxPgaHA xt1I1hQZ30cJ1j/SkDIV2ImSf75Yzz5v72fPiYLq9+H3qKZwrgof9yM/s0bfsSX/GWyFatvo Koo+TgrE0rmtQw82vv7/cbDAYceQm1bRB8Nr8agPyGXYcjohAj7NJcra4hnu1wUw3yD05p/B Rntv7NvPWV3Oo7DKCWIS4RpEd6I6E+tN3GCePqROeK1nDv+FJWLkyvwLigfNaCLro6/292YK VMdBISNYN4s6IGPrXGGvoDwo9RVo6kBhlYEfg6+2eaPCwq40IVfKbYNwLLB2MR2ssL4yzmDo OR3rQFDPj+QcDvH4/0gCQ+qRpYATIegS8zU5xQ8nPL8lba9YNejaOMzw8RB80g+2oPOJ3Wzx oMsmw8taUmd9TIw/bJ2VO1HniiJUGUXCqoeg8homvBOQ0PmWAWIwjC6nf6CIuIM4Egu2I5Kl jEF9ImTPcYZpw5vhdyPwBdXW2lSjV3EAqknWujRgcsm84nycuJnImwJptR481EWmtuH6ysj5 YhRVGbQPfdsjVUQfZdRdkEv4CZ90pdscBi1nRqcqANtzC+WQFwekDzk2lGqNRDg56s+q0KtY scOkTAZQGVpD/8AaLH4v1w== Message-ID: Date: Sat, 29 Aug 2020 13:09:43 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.11.0 MIME-Version: 1.0 In-Reply-To: <20200829004939.GB3265@brightrain.aerifal.cx> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Original-Sender: glaubitz@physik.fu-berlin.de X-Originating-IP: 91.19.171.181 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi! On 8/29/20 2:49 AM, Rich Felker wrote: > This restored my ability to use strace I can confirm that. However ... > and I've written and tested a minimal strace-like hack using > SECCOMP_RET_USER_NOTIF that works as > expected on both j2 and qemu-system-sh4, so I think the above is > correct. The seccomp live testsuite has regressed. With your patch: =============== Sat 29 Aug 2020 12:35:52 PM CEST =============== Regression Test Report ("regression -T live") batch name: 01-sim-allow test mode: c test type: bpf-sim test mode: c test type: bpf-sim-fuzz test mode: c test type: bpf-valgrind batch name: 02-sim-basic test mode: c test type: bpf-sim test mode: c test type: bpf-sim-fuzz test mode: c test type: bpf-valgrind batch name: 03-sim-basic_chains test mode: c test type: bpf-sim test mode: c test type: bpf-sim-fuzz test mode: c test type: bpf-valgrind batch name: 04-sim-multilevel_chains test mode: c test type: bpf-sim test mode: c test type: bpf-sim-fuzz test mode: c test type: bpf-valgrind batch name: 05-sim-long_jumps test mode: c test type: bpf-sim test mode: c test type: bpf-sim-fuzz test mode: c test type: bpf-valgrind batch name: 06-sim-actions test mode: c test type: bpf-sim test mode: c test type: bpf-sim-fuzz test mode: c test type: bpf-valgrind batch name: 07-sim-db_bug_looping test mode: c test type: bpf-sim test mode: c test type: bpf-sim-fuzz test mode: c test type: bpf-valgrind batch name: 08-sim-subtree_checks test mode: c test type: bpf-sim test mode: c test type: bpf-sim-fuzz test mode: c test type: bpf-valgrind batch name: 09-sim-syscall_priority_pre test mode: c test type: bpf-sim test mode: c test type: bpf-sim-fuzz test mode: c test type: bpf-valgrind batch name: 10-sim-syscall_priority_post test mode: c test type: bpf-sim test mode: c test type: bpf-sim-fuzz test mode: c test type: bpf-valgrind batch name: 11-basic-basic_errors test mode: c test type: basic batch name: 12-sim-basic_masked_ops test mode: c test type: bpf-sim test mode: c test type: bpf-sim-fuzz test mode: c test type: bpf-valgrind batch name: 13-basic-attrs test mode: c test type: basic batch name: 14-sim-reset test mode: c test type: bpf-sim test mode: c test type: bpf-sim-fuzz test mode: c test type: bpf-valgrind batch name: 15-basic-resolver test mode: c test type: basic batch name: 16-sim-arch_basic test mode: c test type: bpf-sim test mode: c test type: bpf-valgrind batch name: 17-sim-arch_merge test mode: c test type: bpf-sim test mode: c test type: bpf-valgrind batch name: 18-sim-basic_allowlist test mode: c test type: bpf-sim test mode: c test type: bpf-sim-fuzz test mode: c test type: bpf-valgrind batch name: 19-sim-missing_syscalls test mode: c test type: bpf-sim test mode: c test type: bpf-valgrind batch name: 20-live-basic_die test mode: c test type: live Test 20-live-basic_die%%001-00001 result: SUCCESS Test 20-live-basic_die%%002-00001 result: SUCCESS Test 20-live-basic_die%%003-00001 result: FAILURE 20-live-basic_die 1 ERRNO rc=38 batch name: 21-live-basic_allow test mode: c test type: live Test 21-live-basic_allow%%001-00001 result: SUCCESS batch name: 22-sim-basic_chains_array test mode: c test type: bpf-sim test mode: c test type: bpf-sim-fuzz test mode: c test type: bpf-valgrind batch name: 23-sim-arch_all_le_basic test mode: c test type: bpf-sim test mode: c test type: bpf-valgrind batch name: 24-live-arg_allow test mode: c test type: live Test 24-live-arg_allow%%001-00001 result: SUCCESS batch name: 25-sim-multilevel_chains_adv test mode: c test type: bpf-sim test mode: c test type: bpf-sim-fuzz test mode: c test type: bpf-valgrind batch name: 26-sim-arch_all_be_basic test mode: c test type: bpf-sim test mode: c test type: bpf-valgrind batch name: 27-sim-bpf_blk_state test mode: c test type: bpf-sim test mode: c test type: bpf-sim-fuzz test mode: c test type: bpf-valgrind batch name: 28-sim-arch_x86 test mode: c test type: bpf-sim test mode: c test type: bpf-valgrind batch name: 29-sim-pseudo_syscall test mode: c test type: bpf-sim test mode: c test type: bpf-valgrind batch name: 30-sim-socket_syscalls test mode: c test type: bpf-sim test mode: c test type: bpf-valgrind batch name: 31-basic-version_check test mode: c test type: basic batch name: 32-live-tsync_allow test mode: c test type: live Test 32-live-tsync_allow%%001-00001 result: SUCCESS batch name: 33-sim-socket_syscalls_be test mode: c test type: bpf-sim test mode: c test type: bpf-valgrind batch name: 34-sim-basic_denylist test mode: c test type: bpf-sim test mode: c test type: bpf-sim-fuzz test mode: c test type: bpf-valgrind batch name: 35-sim-negative_one test mode: c test type: bpf-sim test mode: c test type: bpf-valgrind batch name: 36-sim-ipc_syscalls test mode: c test type: bpf-sim test mode: c test type: bpf-valgrind batch name: 37-sim-ipc_syscalls_be test mode: c test type: bpf-sim test mode: c test type: bpf-valgrind batch name: 38-basic-pfc_coverage test mode: c test type: basic batch name: 39-basic-api_level test mode: c test type: basic batch name: 40-sim-log test mode: c test type: bpf-sim test mode: c test type: bpf-sim-fuzz test mode: c test type: bpf-valgrind batch name: 41-sim-syscall_priority_arch test mode: c test type: bpf-sim test mode: c test type: bpf-valgrind batch name: 42-sim-adv_chains test mode: c test type: bpf-sim test mode: c test type: bpf-sim-fuzz test mode: c test type: bpf-valgrind batch name: 43-sim-a2_order test mode: c test type: bpf-sim test mode: c test type: bpf-valgrind batch name: 44-live-a2_order test mode: c test type: live Test 44-live-a2_order%%001-00001 result: FAILURE 44-live-a2_order 1 ALLOW rc=1 batch name: 45-sim-chain_code_coverage test mode: c test type: bpf-sim batch name: 46-sim-kill_process test mode: c test type: bpf-sim batch name: 47-live-kill_process test mode: c test type: live Test 47-live-kill_process%%001-00001 result: SUCCESS batch name: 48-sim-32b_args test mode: c test type: bpf-sim test mode: c test type: bpf-sim-fuzz test mode: c test type: bpf-valgrind batch name: 49-sim-64b_comparisons test mode: c test type: bpf-sim test mode: c test type: bpf-valgrind batch name: 50-sim-hash_collision test mode: c test type: bpf-sim batch name: 51-live-user_notification test mode: c test type: live Test 51-live-user_notification%%001-00001 result: FAILURE 51-live-user_notification 5 ALLOW rc=14 batch name: 52-basic-load test mode: c test type: basic batch name: 53-sim-binary_tree test mode: c test type: bpf-sim test mode: c test type: bpf-valgrind batch name: 54-live-binary_tree test mode: c test type: live Test 54-live-binary_tree%%001-00001 result: SUCCESS batch name: 55-basic-pfc_binary_tree test mode: c test type: basic batch name: 56-basic-iterate_syscalls test mode: c test type: basic batch name: 57-basic-rawsysrc test mode: c test type: basic batch name: 58-live-tsync_notify test mode: c test type: live Test 58-live-tsync_notify%%001-00001 result: FAILURE 58-live-tsync_notify 6 ALLOW rc=14 Regression Test Summary tests run: 11 tests skipped: 0 tests passed: 7 tests failed: 4 tests errored: 0 ============================================================ And without: =============== Sat 29 Aug 2020 01:03:07 PM CEST =============== Regression Test Report ("regression -T live") batch name: 01-sim-allow test mode: c test type: bpf-sim test mode: c test type: bpf-sim-fuzz test mode: c test type: bpf-valgrind batch name: 02-sim-basic test mode: c test type: bpf-sim test mode: c test type: bpf-sim-fuzz test mode: c test type: bpf-valgrind batch name: 03-sim-basic_chains test mode: c test type: bpf-sim test mode: c test type: bpf-sim-fuzz test mode: c test type: bpf-valgrind batch name: 04-sim-multilevel_chains test mode: c test type: bpf-sim test mode: c test type: bpf-sim-fuzz test mode: c test type: bpf-valgrind batch name: 05-sim-long_jumps test mode: c test type: bpf-sim test mode: c test type: bpf-sim-fuzz test mode: c test type: bpf-valgrind batch name: 06-sim-actions test mode: c test type: bpf-sim test mode: c test type: bpf-sim-fuzz test mode: c test type: bpf-valgrind batch name: 07-sim-db_bug_looping test mode: c test type: bpf-sim test mode: c test type: bpf-sim-fuzz test mode: c test type: bpf-valgrind batch name: 08-sim-subtree_checks test mode: c test type: bpf-sim test mode: c test type: bpf-sim-fuzz test mode: c test type: bpf-valgrind batch name: 09-sim-syscall_priority_pre test mode: c test type: bpf-sim test mode: c test type: bpf-sim-fuzz test mode: c test type: bpf-valgrind batch name: 10-sim-syscall_priority_post test mode: c test type: bpf-sim test mode: c test type: bpf-sim-fuzz test mode: c test type: bpf-valgrind batch name: 11-basic-basic_errors test mode: c test type: basic batch name: 12-sim-basic_masked_ops test mode: c test type: bpf-sim test mode: c test type: bpf-sim-fuzz test mode: c test type: bpf-valgrind batch name: 13-basic-attrs test mode: c test type: basic batch name: 14-sim-reset test mode: c test type: bpf-sim test mode: c test type: bpf-sim-fuzz test mode: c test type: bpf-valgrind batch name: 15-basic-resolver test mode: c test type: basic batch name: 16-sim-arch_basic test mode: c test type: bpf-sim test mode: c test type: bpf-valgrind batch name: 17-sim-arch_merge test mode: c test type: bpf-sim test mode: c test type: bpf-valgrind batch name: 18-sim-basic_allowlist test mode: c test type: bpf-sim test mode: c test type: bpf-sim-fuzz test mode: c test type: bpf-valgrind batch name: 19-sim-missing_syscalls test mode: c test type: bpf-sim test mode: c test type: bpf-valgrind batch name: 20-live-basic_die test mode: c test type: live Test 20-live-basic_die%%001-00001 result: SUCCESS Test 20-live-basic_die%%002-00001 result: SUCCESS Test 20-live-basic_die%%003-00001 result: SUCCESS batch name: 21-live-basic_allow test mode: c test type: live Test 21-live-basic_allow%%001-00001 result: SUCCESS batch name: 22-sim-basic_chains_array test mode: c test type: bpf-sim test mode: c test type: bpf-sim-fuzz test mode: c test type: bpf-valgrind batch name: 23-sim-arch_all_le_basic test mode: c test type: bpf-sim test mode: c test type: bpf-valgrind batch name: 24-live-arg_allow test mode: c test type: live Test 24-live-arg_allow%%001-00001 result: SUCCESS batch name: 25-sim-multilevel_chains_adv test mode: c test type: bpf-sim test mode: c test type: bpf-sim-fuzz test mode: c test type: bpf-valgrind batch name: 26-sim-arch_all_be_basic test mode: c test type: bpf-sim test mode: c test type: bpf-valgrind batch name: 27-sim-bpf_blk_state test mode: c test type: bpf-sim test mode: c test type: bpf-sim-fuzz test mode: c test type: bpf-valgrind batch name: 28-sim-arch_x86 test mode: c test type: bpf-sim test mode: c test type: bpf-valgrind batch name: 29-sim-pseudo_syscall test mode: c test type: bpf-sim test mode: c test type: bpf-valgrind batch name: 30-sim-socket_syscalls test mode: c test type: bpf-sim test mode: c test type: bpf-valgrind batch name: 31-basic-version_check test mode: c test type: basic batch name: 32-live-tsync_allow test mode: c test type: live Test 32-live-tsync_allow%%001-00001 result: SUCCESS batch name: 33-sim-socket_syscalls_be test mode: c test type: bpf-sim test mode: c test type: bpf-valgrind batch name: 34-sim-basic_denylist test mode: c test type: bpf-sim test mode: c test type: bpf-sim-fuzz test mode: c test type: bpf-valgrind batch name: 35-sim-negative_one test mode: c test type: bpf-sim test mode: c test type: bpf-valgrind batch name: 36-sim-ipc_syscalls test mode: c test type: bpf-sim test mode: c test type: bpf-valgrind batch name: 37-sim-ipc_syscalls_be test mode: c test type: bpf-sim test mode: c test type: bpf-valgrind batch name: 38-basic-pfc_coverage test mode: c test type: basic batch name: 39-basic-api_level test mode: c test type: basic batch name: 40-sim-log test mode: c test type: bpf-sim test mode: c test type: bpf-sim-fuzz test mode: c test type: bpf-valgrind batch name: 41-sim-syscall_priority_arch test mode: c test type: bpf-sim test mode: c test type: bpf-valgrind batch name: 42-sim-adv_chains test mode: c test type: bpf-sim test mode: c test type: bpf-sim-fuzz test mode: c test type: bpf-valgrind batch name: 43-sim-a2_order test mode: c test type: bpf-sim test mode: c test type: bpf-valgrind batch name: 44-live-a2_order test mode: c test type: live Test 44-live-a2_order%%001-00001 result: SUCCESS batch name: 45-sim-chain_code_coverage test mode: c test type: bpf-sim batch name: 46-sim-kill_process test mode: c test type: bpf-sim batch name: 47-live-kill_process test mode: c test type: live Test 47-live-kill_process%%001-00001 result: SUCCESS batch name: 48-sim-32b_args test mode: c test type: bpf-sim test mode: c test type: bpf-sim-fuzz test mode: c test type: bpf-valgrind batch name: 49-sim-64b_comparisons test mode: c test type: bpf-sim test mode: c test type: bpf-valgrind batch name: 50-sim-hash_collision test mode: c test type: bpf-sim batch name: 51-live-user_notification test mode: c test type: live Test 51-live-user_notification%%001-00001 result: SUCCESS batch name: 52-basic-load test mode: c test type: basic batch name: 53-sim-binary_tree test mode: c test type: bpf-sim test mode: c test type: bpf-valgrind batch name: 54-live-binary_tree test mode: c test type: live Test 54-live-binary_tree%%001-00001 result: SUCCESS batch name: 55-basic-pfc_binary_tree test mode: c test type: basic batch name: 56-basic-iterate_syscalls test mode: c test type: basic batch name: 57-basic-rawsysrc test mode: c test type: basic batch name: 58-live-tsync_notify test mode: c test type: live Test 58-live-tsync_notify%%001-00001 result: SUCCESS Regression Test Summary tests run: 11 tests skipped: 0 tests passed: 11 tests failed: 0 tests errored: 0 ============================================================ To test libseccomp, check out my superh branch from here: > https://github.com/glaubitz/libseccomp/tree/superh then build and test with: # ./autogen.sh && ./configure && make && make check && make check-build && cd tests && ./regression -T live Maybe Michael Karcher has any idea what's wrong with the strace stuff? Adrian -- .''`. John Paul Adrian Glaubitz : :' : Debian Developer - glaubitz@debian.org `. `' Freie Universitaet Berlin - glaubitz@physik.fu-berlin.de `- GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913