GCC attribute no_instrument_function not working

I am trying to add entey/exit hooks to ls in the coreutils package. I followed instuctions from here to get the source and build it:
https://askubuntu.com/questions/976002/how-to-compile-the-sorcecode-of-the-offical-ls-c-source-code

Now, to add hooks, i modiified ls code as:

Makefile

diff --git a/src/local.mk b/src/local.mk

+src_ls_CFLAGS = -g  -finstrument-functions
+src_ls_LDFLAGS = -ldl -rdynamic

and the hooks in ls source:

diff --git a/src/ls.c b/src/ls.c

+void __attribute__((no_instrument_function))
+__cyg_profile_func_enter (void *this_fn,
+                               void *call_site)
+{
+    printf("hacked [+]\n");
+}
+
+void __attribute__((no_instrument_function))
+__cyg_profile_func_exit  (void *this_fn,
+                               void *call_site)
+{
+    printf("hacked [-]\n");
+}

But now when I run ls, it crashes:

// looks like stack depth exceeded but reports segmentation fault:

Program received signal SIGSEGV, Segmentation fault.
0x00000000004057de in printf (__fmt=<synthetic pointer>) at src/ls.c:263
263     {
(gdb) bt
#0  0x00000000004057de in printf (__fmt=<synthetic pointer>) at src/ls.c:263
#1  __cyg_profile_func_enter (this_fn=<optimized out>, call_site=<optimized out>) at src/ls.c:266
#2  0x00000000004057e3 in printf (__fmt=<synthetic pointer>) at src/ls.c:263
#3  __cyg_profile_func_enter (this_fn=<optimized out>, call_site=<optimized out>) at src/ls.c:266
#4  0x00000000004057e3 in printf (__fmt=<synthetic pointer>) at src/ls.c:263
#5  __cyg_profile_func_enter (this_fn=<optimized out>, call_site=<optimized out>) at src/ls.c:266
#6  0x00000000004057e3 in printf (__fmt=<synthetic pointer>) at src/ls.c:263
. . . . 
#712011 __cyg_profile_func_enter (this_fn=<optimized out>, call_site=<optimized out>) at src/ls.c:266
< still running >

Why __attribute__((no_instrument_function)) in entry/exit hook functions not working??

(gdb) disas __cyg_profile_func_enter
Dump of assembler code for function __cyg_profile_func_enter:
   0x00000000004057d0 <+0>:     sub    $0x8,%rsp
   0x00000000004057d4 <+4>:     mov    $0x404aa0,%edi
   0x00000000004057d9 <+9>:     mov    0x8(%rsp),%rsi
=> 0x00000000004057de <+14>:    callq  0x4057d0 <__cyg_profile_func_enter>
   0x00000000004057e3 <+19>:    mov    $0x41b3cf,%edi
   0x00000000004057e8 <+24>:    callq  0x404920 <puts@plt>
   0x00000000004057ed <+29>:    mov    0x8(%rsp),%rsi
   0x00000000004057f2 <+34>:    mov    $0x404aa0,%edi
   0x00000000004057f7 <+39>:    add    $0x8,%rsp
   0x00000000004057fb <+43>:    jmp    0x4057a0 <__cyg_profile_func_exit>
End of assembler dump.
(gdb)

Coreutils source: http://git.savannah.gnu.org/cgit/coreutils.git/tree/