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path: root/tools/testing/selftests/bpf/test_stacktrace_build_id.c
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2018-04-29tools/bpf: add a test for bpf_get_stack with tracepoint progYonghong Song
The test_stacktrace_map and test_stacktrace_build_id are enhanced to call bpf_get_stack in the helper to get the stack trace as well. The stack traces from bpf_get_stack and bpf_get_stackid are compared to ensure that for the same stack as represented as the same hash, their ip addresses or build id's must be the same. Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-03-15bpf: add selftest for stackmap with BPF_F_STACK_BUILD_IDSong Liu
test_stacktrace_build_id() is added. It accesses tracepoint urandom_read with "dd" and "urandom_read" and gathers stack traces. Then it reads the stack traces from the stackmap. urandom_read is a statically link binary that reads from /dev/urandom. test_stacktrace_build_id() calls readelf to read build ID of urandom_read and compares it with build ID from the stackmap. Signed-off-by: Song Liu <songliubraving@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>