(gdb) info threads 
  Id   Target Id         Frame 
* 1    Thread 0x7fd791749880 (LWP 50308) talloc_chunk_from_ptr (ptr=0x1) at ../talloc.c:521
(gdb) t 1
[Switching to thread 1 (Thread 0x7fd791749880 (LWP 50308))]
#0  talloc_chunk_from_ptr (ptr=0x1) at ../talloc.c:521
521		if (unlikely((tc->flags & (TALLOC_FLAG_FREE | ~TALLOC_FLAG_MASK)) != talloc_magic)) {

(gdb) bt full
#0  talloc_chunk_from_ptr (ptr=0x1) at ../talloc.c:521
        pp = 0x1 <Address 0x1 out of bounds>
        tc = <optimized out>
#1  __talloc_with_prefix (tc_ret=<synthetic pointer>, prefix_len=0, size=24, context=0x1) at ../talloc.c:743
        tc = 0x0
        limit = 0x0
        total_len = 120
        parent = 0x0
#2  __talloc (tc=<synthetic pointer>, size=24, context=0x1) at ../talloc.c:804
No locals.
#3  _talloc_named_const (name=0x7fd781255300 <Address 0x7fd781255300 out of bounds>, size=24, context=0x1) at ../talloc.c:961
        tc = <optimized out>
#4  talloc_named_const (context=<optimized out>, size=24, name=0x7fd781255300 <Address 0x7fd781255300 out of bounds>) at ../talloc.c:1728
No locals.
#5  0x00007fd781243dd0 in ?? ()
No symbol table info available.
#6  0x000055b88ed38ac0 in ?? ()
No symbol table info available.
#7  0x0000000000000000 in ?? ()
No symbol table info available.

(gdb) frame 1
#1  __talloc_with_prefix (tc_ret=<synthetic pointer>, prefix_len=0, size=24, context=0x1) at ../talloc.c:743
743			parent = talloc_chunk_from_ptr(context);

(gdb) set print pretty on
(gdb) p *talloc_chunk_from_ptr
$1 = {struct talloc_chunk *(const void *)} 0x7fd78d3bd6f0 <talloc_chunk_from_ptr>



# less package
sssd-common-1.16.2-13.el7