Description

Crash in permissions module when load_backends set to 1

modparam("permissions", "db_url", DBURL)
modparam("permissions", "db_mode", 0)
modparam("permissions", "address_table", "gw_auth_ip")
modparam("permissions", "trusted_table", "user_auth_ip")
modparam("permissions", "load_backends", 1)

Troubleshooting

Reproduction

To avoid Kamailio complaining about an old version table during an upgrade, I attempted to disable the "trusted" backend as we're not using it. Kamailio seg faults on startup. This is on 5.1.8 but I didn't see much difference in permissions with master

Debugging Data

(gdb) bt full
#0  0x0000000000000000 in ?? ()
No symbol table info available.
#1  0xffffffff3ee2991c in init_child_trusted (rank=rank@entry=-2) at trusted.c:267
        __func__ = "init_child_trusted"
#2  0xffffffff3ee2d1d0 in child_init (rank=<optimized out>) at permissions.c:651
No locals.
#3  0x000000010014a230 in init_mod_child (m=0x1007affd8, rank=rank@entry=-2) at core/sr_module.c:943
        __func__ = "init_mod_child"
#4  0x000000010014a0ec in init_mod_child (m=0x1007b0658, rank=rank@entry=-2) at core/sr_module.c:939
        __func__ = "init_mod_child"
#5  0x000000010014a0ec in init_mod_child (m=0x1007b0d80, rank=rank@entry=-2) at core/sr_module.c:939
        __func__ = "init_mod_child"
#6  0x000000010014a0ec in init_mod_child (m=0x1007b1a88, rank=rank@entry=-2) at core/sr_module.c:939
        __func__ = "init_mod_child"
#7  0x000000010014a0ec in init_mod_child (m=0x1007b1ea0, rank=rank@entry=-2) at core/sr_module.c:939
        __func__ = "init_mod_child"
#8  0x000000010014a0ec in init_mod_child (m=0x1007b22b8, rank=rank@entry=-2) at core/sr_module.c:939
        __func__ = "init_mod_child"
#9  0x000000010014a0ec in init_mod_child (m=0x1007b29c0, rank=rank@entry=-2) at core/sr_module.c:939
        __func__ = "init_mod_child"
#10 0x000000010014a0ec in init_mod_child (m=0x1007b33d8, rank=rank@entry=-2) at core/sr_module.c:939
        __func__ = "init_mod_child"
#11 0x00000001001565d0 in init_child (rank=rank@entry=-2) at core/sr_module.c:970
No locals.
#12 0x000000010018cbf4 in fork_process (child_id=child_id@entry=-2, desc=<optimized out>, make_sock=make_sock@entry=1) at core/pt.c:338
        pid = <optimized out>
        child_process_no = <optimized out>
        ret = -1
        new_seed1 = <optimized out>
        new_seed2 = <optimized out>
        sockfd = {6, 13}
        __func__ = "fork_process"
#13 0xffffffff3f211cd4 in mod_child (rank=<optimized out>) at ctl.c:327
        pid = <optimized out>
        cs = <optimized out>
        rank = 0
        rpc_handler = 1
        rpc_handler = 1
#14 0x000000010014a230 in init_mod_child (m=0x1007af178, rank=rank@entry=0) at core/sr_module.c:943
        __func__ = "init_mod_child"
#15 0x000000010014a0ec in init_mod_child (m=0x1007af800, rank=rank@entry=0) at core/sr_module.c:939
        __func__ = "init_mod_child"
#16 0x000000010014a0ec in init_mod_child (m=0x1007affd8, rank=rank@entry=0) at core/sr_module.c:939
        __func__ = "init_mod_child"
#17 0x000000010014a0ec in init_mod_child (m=0x1007b0658, rank=rank@entry=0) at core/sr_module.c:939
        __func__ = "init_mod_child"
#18 0x000000010014a0ec in init_mod_child (m=0x1007b0d80, rank=rank@entry=0) at core/sr_module.c:939
        __func__ = "init_mod_child"
#19 0x000000010014a0ec in init_mod_child (m=0x1007b1a88, rank=rank@entry=0) at core/sr_module.c:939
        __func__ = "init_mod_child"
#20 0x000000010014a0ec in init_mod_child (m=0x1007b1ea0, rank=rank@entry=0) at core/sr_module.c:939
        __func__ = "init_mod_child"
#21 0x000000010014a0ec in init_mod_child (m=0x1007b22b8, rank=rank@entry=0) at core/sr_module.c:939
        __func__ = "init_mod_child"
#22 0x000000010014a0ec in init_mod_child (m=0x1007b29c0, rank=rank@entry=0) at core/sr_module.c:939
        __func__ = "init_mod_child"
#23 0x000000010014a0ec in init_mod_child (m=0x1007b33d8, rank=rank@entry=0) at core/sr_module.c:939
        __func__ = "init_mod_child"
#24 0x00000001001565d0 in init_child (rank=rank@entry=0) at core/sr_module.c:970
No locals.
#25 0x00000001000c4c44 in main_loop () at main.c:1419
        i = <optimized out>
        pid = <optimized out>
        si = <optimized out>
        si_desc = "\000\000\000\001\000h\200\000\000\000\000\000\000\000\000\330\000\000\000\001\000o6H\000\000\000\000\000\000\000\004\000\000\000\000\000\000\000n\000\000\000\000\000\000\000\t\000\000\000\000\000\000\000\002\000\000\000\000\000\000\000\004\377\377\377\377\177\377\357\241\000\000\000\001\000\f\345\004", '\000' <repeats 11 times>, "\001\000\003\277\320\377\377\377\377\377\377\377\375\377\377\377\377\377\377\377\375\377\377\377\377\377\377\377\375\377\377\377\377\377\377\377\375"
        nrprocs = <optimized out>
        woneinit = <optimized out>
        __func__ = "main_loop"
#26 0x00000001000ce704 in main (argc=<optimized out>, argv=<optimized out>) at main.c:2663
        cfg_stream = <optimized out>
        c = <optimized out>
        r = <optimized out>
        tmp = 0xffffffff7ffffbb5 ""
        tmp_len = 0
        port = 0
        proto = 0
        options = 0x10003ee20 ":f:cm:M:dVIhEeb:l:L:n:vKrRDTN:W:w:t:u:g:P:G:SQ:O:a:A:x:X:Y:"
        ret = -1
        seed = 1842495819
        rfd = <optimized out>
        debug_save = <optimized out>
        debug_flag = <optimized out>
        dont_fork_cnt = <optimized out>
        p = <optimized out>
        st = {st_dev = 70325794504717, st_ino = 205858632, st_mode = 16872, st_nlink = 2, st_uid = 1, st_gid = 12, st_rdev = 18446744073709551615, st_size = 334, st_atim = {tv_sec = 1574807105, tv_nsec = 898072627}, st_mtim = {tv_sec = 1574810139, tv_nsec = 861570968}, st_ctim = {tv_sec = 1574810139, tv_nsec = 861570968}, st_blksize = 8192, st_blocks = 16, st_fstype = "tmpfs\000\000\000\000\000\000\000\000\000\000"}
        __func__ = "main"
(gdb) info locals
cfg_stream = <optimized out>
c = <optimized out>
r = <optimized out>
tmp = 0xffffffff7ffffbb5 ""
tmp_len = 0
port = 0
proto = 0
options = 0x10003ee20 ":f:cm:M:dVIhEeb:l:L:n:vKrRDTN:W:w:t:u:g:P:G:SQ:O:a:A:x:X:Y:"
ret = -1
seed = 1842495819
rfd = <optimized out>
debug_save = <optimized out>
debug_flag = <optimized out>
dont_fork_cnt = <optimized out>
p = <optimized out>
st = {st_dev = 70325794504717, st_ino = 205858632, st_mode = 16872, st_nlink = 2, st_uid = 1, st_gid = 12, st_rdev = 18446744073709551615, st_size = 334, st_atim = {tv_sec = 1574807105, tv_nsec = 898072627}, st_mtim = {tv_sec = 1574810139, tv_nsec = 861570968}, st_ctim = {tv_sec = 1574810139, tv_nsec = 861570968}, st_blksize = 8192, st_blocks = 16, st_fstype = "tmpfs\000\000\000\000\000\000\000\000\000\000"}
__func__ = "main"

Additional Information

version: kamailio 5.1.8 (sparc64/solaris) 
flags: STATS: Off, USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MEM, SHM_MMAP, PKG_MALLOC, Q_MALLOC, F_MALLOC, TLSF_MALLOC, DBG_SR_MEMORY, FAST_LOCK-ADAPTIVE_WAIT, USE_DNS_CACHE, USE_DNS_FAILOVER, USE_NAPTR, USE_DST_BLACKLIST, HAVE_RESOLV_RES
ADAPTIVE_WAIT_LOOPS=1024, MAX_RECV_BUFFER_SIZE 262144 MAX_URI_SIZE 1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB
poll method support: poll, select, /dev/poll.
id: unknown 
compiled with gcc 7.3.0```

* **Operating System**:

Solaris 11.4

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