I had this issue today:

# semodule -i logging.pp 
Segmentation fault (core dumped)

I traced this a bit and it seems that this is because of libsepol. 
The core dump is the result of lines 602:603 of link.c:

(gdb) bt
#0  0xb7f732fd in sens_copy_callback (key=0x848c2a0 "s15", datum=0x848c290, data=0xbfde3854) at link.c:602
#1  0xb7f6f8a1 in hashtab_map (h=0x846cbf0, apply=0xb7f731d1 <sens_copy_callback>, args=0xbfde3854) at hashtab.c:214
#2  0xb7f75528 in copy_identifiers (state=0xbfde3854, src_symtab=0x843cc74, dest_decl=0x0) at link.c:1323
#3  0xb7f77c72 in link_modules (handle=0x804c710, b=0x80525b8, mods=0x863ce18, len=19, verbose=0) at link.c:2178
#4  0xb7f7a2c9 in sepol_link_packages (handle=0x804c710, base=0x8053060, modules=0x80543c8, num_modules=19, verbose=0) at module.c:302

Where:

(gdb) l
597                                 state->cur_mod_name);
598                             return -SEPOL_LINK_NOTSUP;
599                     }
600             }
601     
602             state->cur->map[SYM_LEVELS][level->level->sens - 1] =
603                 base_level->level->sens;
604     
605             return 0;
606     }

Because of:

(gdb) p base_level
$1 = (level_datum_t *) 0x0

The last 'if' checks for !base_level, but inside the 'if' block, only 
!scope and scope->scope==SCOPE_DECL are checked.

This core dump is caused by:

(gdb) p scope->scope
$2 = 1

Which is noted as:

/* Required for this decl */
#define SCOPE_REQ  1

in libsepol/include/sepol/policydb/policydb.h

Hope this helps...

<<V13>>

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