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> >     map = mmap(NULL , 1024, PROT_READ|PROT_WRITE|PROT_EXEC, > MAP_ANONYMOUS|MAP_PRIVATE, -1, 0); >     if (map == MAP_FAILED) { >         printf("Failed to mmap: %s\n", strerror(errno)); >         return -1; >     } > >     memset(map, 0, sizeof(BUF_SIZE)); > >     mlockall(MCL_CURRENT); > >     syscall(247, map); > >     return 0; > } > > 3 after the test case  executed, expect to get the call trace. but > this commit cause the test case can not find the call trace. > > > do you have chance to look at this issue? > > > Thanks > > Guocai >