linux.git/tools/testing/selftests/bpf/test_stacktrace_build_id.c, branch v4.17 Linux kernel source tree bpf: add selftest for stackmap with BPF_F_STACK_BUILD_ID 2018-03-15T00:10:02+00:00 Song Liu songliubraving@fb.com 2018-03-14T17:23:22+00:00 81f77fd0deeb866d65ccc79733df8d2af5217c82 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> 
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>