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23316a366e
linux_dsm_epyc7002/tools/testing/selftests/bpf
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Yonghong Song 23316a366e tools/bpf: fix selftest get_cgroup_id_user 
Commit f269099a7e ("tools/bpf: add a selftest for
bpf_get_current_cgroup_id() helper") added a test
for bpf_get_current_cgroup_id() helper. The bpf program
is attached to tracepoint syscalls/sys_enter_nanosleep
and will record the cgroup id if the tracepoint is hit.
The test program creates a cgroup and attachs itself to
this cgroup and expects that the test program process
cgroup id is the same as the cgroup_id retrieved
by the bpf program.

In a light system where no other processes called
nanosleep syscall, the test case can pass.
In a busy system where many different processes can hit
syscalls/sys_enter_nanosleep tracepoint, the cgroup id
recorded by bpf program may not match the test program
process cgroup_id.

This patch fixed an issue by communicating the test program
pid to bpf program. The bpf program only records
cgroup id if the current task pid is the same as
passed-in pid. This ensures that the recorded cgroup_id
is for the cgroup within which the test program resides.

Fixes: f269099a7e ("tools/bpf: add a selftest for bpf_get_current_cgroup_id() helper")
Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-06-08 00:10:07 +02:00
..
gnu selftests/bpf: get rid of -D__x86_64__ 2017-05-03 09:51:25 -04:00
include/uapi/linux License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
.gitignore tools/bpf: add a selftest for bpf_get_current_cgroup_id() helper 2018-06-03 18:22:41 -07:00
bpf_endian.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
bpf_helpers.h tools/bpf: sync uapi bpf.h for bpf_get_current_cgroup_id() helper 2018-06-03 18:22:41 -07:00
bpf_rand.h bpf: add ld64 imm test cases 2018-05-14 19:11:45 -07:00
bpf_rlimit.h bpf: unify rlimit handling in selftests 2018-02-26 20:11:23 -08:00
bpf_util.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
cgroup_helpers.c tools/bpf: add a selftest for bpf_get_current_cgroup_id() helper 2018-06-03 18:22:41 -07:00
cgroup_helpers.h tools/bpf: add a selftest for bpf_get_current_cgroup_id() helper 2018-06-03 18:22:41 -07:00
config selftests: bpf: config: enable NET_SCH_INGRESS for xdp_meta.sh 2018-05-18 21:39:39 +02:00
connect4_prog.c selftests/bpf: Selftest for sys_connect hooks 2018-03-31 02:16:14 +02:00
connect6_prog.c selftests/bpf: Selftest for sys_connect hooks 2018-03-31 02:16:14 +02:00
dev_cgroup.c selftests/bpf: add a test for device cgroup controller 2017-11-05 23:26:51 +09:00
get_cgroup_id_kern.c tools/bpf: fix selftest get_cgroup_id_user 2018-06-08 00:10:07 +02:00
get_cgroup_id_user.c tools/bpf: fix selftest get_cgroup_id_user 2018-06-08 00:10:07 +02:00
Makefile tools/bpf: add a selftest for bpf_get_current_cgroup_id() helper 2018-06-03 18:22:41 -07:00
sample_map_ret0.c selftest/bpf: extend the offload test with map checks 2018-01-18 22:54:26 +01:00
sample_ret0.c selftests/bpf: add offload test based on netdevsim 2017-12-03 00:27:58 +01:00
sendmsg4_prog.c selftests/bpf: Selftest for sys_sendmsg hooks 2018-05-28 17:41:05 +02:00
sendmsg6_prog.c selftests/bpf: Selftest for sys_sendmsg hooks 2018-05-28 17:41:05 +02:00
sockmap_parse_prog.c bpf: add map tests for BPF_PROG_TYPE_SK_MSG 2018-03-19 21:14:39 +01:00
sockmap_tcp_msg_prog.c bpf: add map tests for BPF_PROG_TYPE_SK_MSG 2018-03-19 21:14:39 +01:00
sockmap_verdict_prog.c bpf: add map tests for BPF_PROG_TYPE_SK_MSG 2018-03-19 21:14:39 +01:00
tcp_client.py bpf: add selftest for tcpbpf 2018-01-25 16:41:15 -08:00
tcp_server.py bpf: add selftest for tcpbpf 2018-01-25 16:41:15 -08:00
test_adjust_tail.c bpf: adding tests for bpf_xdp_adjust_tail 2018-04-18 23:34:17 +02:00
test_align.c bpf: unify rlimit handling in selftests 2018-02-26 20:11:23 -08:00
test_btf_haskv.c bpf: btf: Add BTF tests 2018-04-19 21:47:42 +02:00
test_btf_nokv.c bpf: btf: Add BTF tests 2018-04-19 21:47:42 +02:00
test_btf.c bpf: btf: Ensure t->type == 0 for BTF_KIND_FWD 2018-06-02 11:22:36 -07:00
test_dev_cgroup.c bpf: unify rlimit handling in selftests 2018-02-26 20:11:23 -08:00
test_get_stack_rawtp.c tools/bpf: add a test for bpf_get_stack with raw tracepoint prog 2018-04-29 08:45:54 -07:00
test_iptunnel_common.h selftests/bpf: add a test for basic XDP functionality 2017-04-01 12:45:57 -07:00
test_kmod.sh selftests: bpf: test_kmod.sh: check the module path before insmod 2018-02-08 00:24:55 +01:00
test_l4lb_noinline.c selftests/bpf: add bpf_call test 2017-12-17 20:34:36 +01:00
test_l4lb.c bpf: Move endianness BPF helpers out of bpf_util.h 2017-05-01 12:43:49 -07:00
test_libbpf_open.c selftests/bpf: add test program for loading BPF ELF files 2018-02-09 00:24:38 +01:00
test_libbpf.sh selftests/bpf: add selftest that use test_libbpf_open 2018-02-09 00:25:12 +01:00
test_lirc_mode2_kern.c bpf: add selftest for lirc_mode2 type program 2018-05-30 12:40:14 +02:00
test_lirc_mode2_user.c bpf: add selftest for lirc_mode2 type program 2018-05-30 12:40:14 +02:00
test_lirc_mode2.sh bpf: add selftest for lirc_mode2 type program 2018-05-30 12:40:14 +02:00
test_lpm_map.c bpf: unify rlimit handling in selftests 2018-02-26 20:11:23 -08:00
test_lru_map.c bpf: unify rlimit handling in selftests 2018-02-26 20:11:23 -08:00
test_lwt_seg6local.c selftests/bpf: test for seg6local End.BPF action 2018-05-24 11:57:36 +02:00
test_lwt_seg6local.sh selftests/bpf: test for seg6local End.BPF action 2018-05-24 11:57:36 +02:00
test_maps.c bpf: add map tests for BPF_PROG_TYPE_SK_MSG 2018-03-19 21:14:39 +01:00
test_obj_id.c bpf: Fix test_obj_id.c for llvm 5.0 2017-06-09 15:15:11 -04:00
test_offload.py selftests/bpf: check for chain-non-0 extack message 2018-01-25 21:23:09 -05:00
test_pkt_access.c selftests/bpf: fix broken build due to types.h 2017-05-17 18:45:14 -04:00
test_pkt_md_access.c bpf: fix selftest/bpf/test_pkt_md_access on s390x 2017-08-07 10:06:27 -07:00
test_progs.c tools/bpf: add two BPF_TASK_FD_QUERY tests in test_progs 2018-05-24 18:18:20 -07:00
test_sock_addr.c selftests/bpf: Selftest for sys_sendmsg hooks 2018-05-28 17:41:05 +02:00
test_sock_addr.sh tools/bpf: fix test_sock and test_sock_addr.sh failure 2018-04-19 00:16:37 +02:00
test_sock.c tools/bpf: fix test_sock and test_sock_addr.sh failure 2018-04-19 00:16:37 +02:00
test_sockhash_kern.c bpf: selftest additions for SOCKHASH 2018-05-16 22:00:12 +02:00
test_sockmap_kern.c bpf: selftest additions for SOCKHASH 2018-05-16 22:00:12 +02:00
test_sockmap_kern.h bpf: selftest additions for SOCKHASH 2018-05-16 22:00:12 +02:00
test_sockmap.c selftests/bpf: test_sockmap, print additional test options 2018-06-02 06:13:56 +02:00
test_stacktrace_build_id.c tools/bpf: add a test for bpf_get_stack with tracepoint prog 2018-04-29 08:45:54 -07:00
test_stacktrace_map.c tools/bpf: add a test for bpf_get_stack with tracepoint prog 2018-04-29 08:45:54 -07:00
test_tag.c bpf: unify rlimit handling in selftests 2018-02-26 20:11:23 -08:00
test_tcp_estats.c selftests/bpf: add a test case to check verifier pointer arithmetic 2017-05-03 09:51:25 -04:00
test_tcpbpf_kern.c selftests/bpf: tcpbpf_kern: use in6_* macros from glibc 2018-02-22 01:19:37 +01:00
test_tcpbpf_user.c bpf: unify rlimit handling in selftests 2018-02-26 20:11:23 -08:00
test_tcpbpf.h bpf: add selftest for tcpbpf 2018-01-25 16:41:15 -08:00
test_tracepoint.c bpf/tracing: add a bpf test for new ioctl query interface 2017-12-12 08:46:40 -08:00
test_tunnel_kern.c selftests/bpf: bpf tunnel test. 2018-04-27 00:11:14 +02:00
test_tunnel.sh selftests/bpf: bpf tunnel test. 2018-04-27 00:11:14 +02:00
test_verifier_log.c bpf: unify rlimit handling in selftests 2018-02-26 20:11:23 -08:00
test_verifier.c bpf: reject passing modified ctx to helper functions 2018-06-07 12:37:17 -07:00
test_xdp_meta.c bpf: improve selftests and add tests for meta pointer 2017-09-26 13:36:44 -07:00
test_xdp_meta.sh tools/bpf: fix batch-mode test failure of test_xdp_redirect.sh 2018-02-06 11:34:42 +01:00
test_xdp_noinline.c selftests/bpf: add xdp noinline test 2017-12-17 20:34:36 +01:00
test_xdp_redirect.c selftests: bpf: add a test for XDP redirect 2017-08-08 18:12:50 -07:00
test_xdp_redirect.sh tools/bpf: fix batch-mode test failure of test_xdp_redirect.sh 2018-02-06 11:34:42 +01:00
test_xdp.c selftests: bpf: Use bpf_endian.h in test_xdp.c 2017-05-02 07:52:01 -07:00
trace_helpers.c tools/bpf: add ksym_get_addr() in trace_helpers 2018-05-24 18:18:20 -07:00
trace_helpers.h tools/bpf: add ksym_get_addr() in trace_helpers 2018-05-24 18:18:20 -07:00
urandom_read.c bpf: add selftest for stackmap with build_id in NMI context 2018-05-14 23:29:45 +02:00