On startup I'm getting an immediate SEGV from getMibstat in line of 746,
which is calling a memcpy. This is running in a solaris sparse zone.
/var/tmp # gdb /usr/local/sbin/snmpd snmpd.11061.core
GNU gdb 6.8
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This GDB was configured as "sparc-sun-solaris2.10"...
Reading symbols from /usr/local/lib/libnetsnmpagent.so.25...done.
Loaded symbols for /usr/local/lib/libnetsnmpagent.so.25
Reading symbols from /usr/local/lib/libnetsnmpmibs.so.25...done.
Loaded symbols for /usr/local/lib/libnetsnmpmibs.so.25
Reading symbols from /usr/lib/libkvm.so.1...done.
Loaded symbols for /usr/lib/libkvm.so.1
Reading symbols from /usr/local/lib/libnetsnmp.so.25...done.
Loaded symbols for /usr/local/lib/libnetsnmp.so.25
Reading symbols from /lib/libadm.so.1...done.
Loaded symbols for /lib/libadm.so.1
Reading symbols from /lib/libkstat.so.1...done.
Loaded symbols for /lib/libkstat.so.1
Reading symbols from /usr/local/ssl/lib/libcrypto.so.1.0.0...done.
Loaded symbols for /usr/local/ssl/lib/libcrypto.so.1.0.0
Reading symbols from /lib/libnsl.so.1...done.
Loaded symbols for /lib/libnsl.so.1
Reading symbols from /lib/libsocket.so.1...done.
Loaded symbols for /lib/libsocket.so.1
Reading symbols from /lib/libelf.so.1...done.
Loaded symbols for /lib/libelf.so.1
Reading symbols from /lib/libc.so.1...done.
Loaded symbols for /lib/libc.so.1
Reading symbols from /usr/local/lib/libgcc_s.so.1...done.
Loaded symbols for /usr/local/lib/libgcc_s.so.1
Reading symbols from /lib/libdl.so.1...
warning: Lowest section in /lib/libdl.so.1 is .hash at 000000b4
done.
Loaded symbols for /lib/libdl.so.1
Reading symbols from /platform/sun4v/lib/libc_psr.so.1...done.
Loaded symbols for /platform/SUNW,T5240/lib/libc_psr.so.1
Reading symbols from /lib/ld.so.1...done.
Loaded symbols for /lib/ld.so.1
Core was generated by `/usr/local/sbin/snmpd -Lsd -p /var/run/snmpd.pid'.
Program terminated with signal 11, Segmentation fault.
[New process 76597 ]
#0 0xff3a0594 in memcpy () from /platform/SUNW,T5240/lib/libc_psr.so.1
(gdb) backtrace
#0 0xff3a0594 in memcpy () from /platform/SUNW,T5240/lib/libc_psr.so.1
#1 0xff1f2578 in getMibstat (grid=MIB_INTERFACES, resp=0xffbff5d0,
entrysize=120, req_type=4280683568,
comp=0xff1f3e18 <Name_cmp>, arg=0x2d2d8) at kernel_sunos5.c:746
#2 0xff1f3310 in getMibstat (grid=173840, resp=0xffbff6d0, entrysize=224,
req_type=GET_FIRST,
comp=0xff1f3e10 <Get_everything>, arg=0x0) at kernel_sunos5.c:1561
#3 0xff225b94 in netsnmp_arch_interface_container_load
(container=0x2a6a8, l_flags=0)
at if-mib/data_access/interface_solaris2.c:203
#4 0xff20e220 in netsnmp_access_interface_container_load
(container=0x2a6a8, load_flags=0)
at if-mib/data_access/interface.c:159
#5 0xff20e37c in netsnmp_access_interface_init () at
if-mib/data_access/interface.c:88
#6 0xff227ca8 in init_mib_modules () at mib_modules.c:69
#7 0x00012da4 in main (argc=4, argv=0xffbffc4c) at snmpd.c:913
/tnt/src/PKG/TNTnet-snmp-5.6.1/net-snmp-5.6.1/agent/mibgroup/kernel_sunos5.c:746
int
getMibstat(mibgroup_e grid, void *resp, size_t entrysize,
req_e req_type, int (*comp) (void *, void *), void *arg)
{
int ret, rc = -1, mibgr, mibtb, cache_valid;
size_t length;
mibcache *cachep;
found_e result = NOT_FOUND;
void *ep;
/*
* We assume that Mibcache is initialized in mibgroup_e enum order so
we
* don't check the validity of index here.
*/
DEBUGMSGTL(("kernel_sunos5", "getMibstat (%d, *, %d, %d, *, *)\n",
grid, (int)entrysize, req_type));
cachep = &Mibcache[grid];
mibgr = Mibmap[grid].group;
mibtb = Mibmap[grid].table;
if (cachep->cache_addr == (void *) -1) /* Hasn't been initialized yet
*/
init_mibcache_element(cachep);
if (cachep->cache_size == 0) { /* Memory allocation problems */
cachep->cache_addr = resp; /* So use caller supplied address
instead of cache */
cachep->cache_size = entrysize;
cachep->cache_last_found = 0;
}
if (req_type != GET_NEXT)
cachep->cache_last_found = 0;
cache_valid = (cachep->cache_time > 0);
DEBUGMSGTL(("kernel_sunos5","... cache_valid %d time %ld ttl %d now
%ld\n",
cache_valid, cachep->cache_time, (int)cachep->cache_ttl,
720
721 if (rc >= 0) { /* Cache has been filled up */
722 cachep->cache_time = cachep->cache_ttl;
723 cachep->cache_length = length;
724 if (rc == 1) /* Found but there are more unread
data */
725 cachep->cache_flags |= CACHE_MOREDATA;
726 else {
727 cachep->cache_flags &= ~CACHE_MOREDATA;
728 if (rc > 1) {
729 cachep->cache_time = 0;
730 }
731 }
732 cachep->cache_comp = (void *) comp;
733 cachep->cache_arg = arg;
734 } else {
735 cachep->cache_comp = NULL;
736 cachep->cache_arg = NULL;
737 }
738 }
739 DEBUGMSGTL(("kernel_sunos5", "... result %d rc %d\n", result,
rc));
740
741 if (result == FOUND || rc == 0 || rc == 1) {
742 /*
743 * Entry has been found, deliver it
744 */
745 if (resp != NULL) {
746 memcpy(resp, ep, entrysize);
747 }
748 ret = 0;
749 cachep->cache_last_found =
750 ((char *)ep - (char *)cachep->cache_addr) / entrysize;
751 } else {
752 ret = 1; /* Not found */
753 }
754 DEBUGMSGTL(("kernel_sunos5", "... getMibstat returns %d\n",
ret));
755 return ret;
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