81f77fd0de
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>
23 lines
337 B
C
23 lines
337 B
C
#include <stdio.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#define BUF_SIZE 256
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int main(void)
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{
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int fd = open("/dev/urandom", O_RDONLY);
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int i;
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char buf[BUF_SIZE];
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if (fd < 0)
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return 1;
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for (i = 0; i < 4; ++i)
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read(fd, buf, BUF_SIZE);
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close(fd);
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return 0;
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}
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