[root@chantry rtdm]# strace insmod simple_rtdm.ko 
execve("/sbin/insmod", ["insmod", "simple_rtdm.ko"], [/* 62 vars */]) = 0
brk(0)                                  = 0x602000
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2b5cb9e4a000
uname({sys="Linux", node="chantry", ...}) = 0
access("/etc/ld.so.preload", R_OK)      = -1 ENOENT (No such file or directory)
open("/tmp/local/lib/tls/x86_64/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/tmp/local/lib/tls/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/tmp/local/lib/x86_64/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/tmp/local/lib/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY)      = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=160470, ...}) = 0
mmap(NULL, 160470, PROT_READ, MAP_PRIVATE, 3, 0) = 0x2b5cb9e4b000
close(3)                                = 0
open("/lib64/libc.so.6", O_RDONLY)      = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0000\335\1"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=1288656, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2b5cb9e73000
mmap(NULL, 3395704, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x2b5cba04c000
mprotect(0x2b5cba180000, 2097152, PROT_NONE) = 0
mmap(0x2b5cba380000, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x134000) = 0x2b5cba380000
mmap(0x2b5cba385000, 16504, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x2b5cba385000
close(3)                                = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2b5cba38a000
arch_prctl(ARCH_SET_FS, 0x2b5cba38a6f0) = 0
mprotect(0x2b5cba380000, 12288, PROT_READ) = 0
mprotect(0x2b5cba04a000, 4096, PROT_READ) = 0
munmap(0x2b5cb9e4b000, 160470)          = 0
brk(0)                                  = 0x602000
brk(0x623000)                           = 0x623000
--- SIGSEGV (Segmentation fault) @ 0 (0) ---
+++ killed by SIGSEGV +++
Process 12314 detached