[Pkg-net-snmp-devel] Bug#578060: snmpd 5.4.2.1* segfaults

[Remigiusz Świc]

Package: snmpd
Version: 5.4.2.1~dfsg-5+b1
Severity: important

Hi!

I have strange problem with snmpd on one of my machines. Randomly,
from few minutes to few hours, snmpd process dissapears and in dmesg I
can find something like this:
Apr 12 13:48:02 xxx kernel: [2631034.245761] snmpd[16576] trap divide
error ip:7f7e99fe90bc sp:7fff5a45b710 error:0 in
libnetsnmpmibs.so.15.1.2[7f7e99fb2000+117000]
Apr 12 13:56:02 xxx kernel: [2631513.578136] snmpd[17269] trap divide
error ip:7fda88a1d0bc sp:7fff7c4458a0 error:0 in
libnetsnmpmibs.so.15.1.2[7fda889e6000+117000]
Apr 12 14:11:01 xxx kernel: [2632413.006474] snmpd[17301] trap divide
error ip:7f5a9d74d0bc sp:7fffc17930a0 error:0 in
libnetsnmpmibs.so.15.1.2[7f5a9d716000+117000]
Apr 12 14:38:02 xxx kernel: [2634033.055309] snmpd[17310] trap divide
error ip:7f534113a0bc sp:7fffb89164f0 error:0 in
libnetsnmpmibs.so.15.1.2[7f5341103000+117000]

It is very strange because on second machine (which has exactly the
same configuration and servs the same services - this is a FW cluster)
this problem have never occured.

I have installed libsnmp15-dbg and this is what I saw in gdb:
Program received signal SIGFPE, Arithmetic exception.
0x00007f22fe73d0bc in var_hrproc (vp=<value optimized out>,
name=<value optimized out>, length=<value optimized out>, exact=<value
optimized out>, var_len=0x7fff211e9ea0, write_method=<value optimized
out>) at host/hr_proc.c:183
183     host/hr_proc.c: No such file or directory.
        in host/hr_proc.c
(gdb) bt
#0  0x00007f22fe73d0bc in var_hrproc (vp=<value optimized out>,
name=<value optimized out>, length=<value optimized out>, exact=<value
optimized out>, var_len=0x7fff211e9ea0, write_method=<value optimized
out>) at host/hr_proc.c:183
#1  0x00007f22fea5542f in netsnmp_old_api_helper (handler=<value
optimized out>, reginfo=<value optimized out>, reqinfo=0x269ed60,
requests=0x269f540) at old_api.c:286
#2  0x00007f22fec880b7 in netsnmp_call_handler
(next_handler=0x256ba30, reginfo=0x256b3f0, reqinfo=0x269ed60,
requests=0x269f540) at agent_handler.c:435
#3  0x00007f22fea50c39 in netsnmp_bulk_to_next_helper
(handler=0x256bad0, reginfo=0x256b3f0, reqinfo=0x269ed60,
requests=0x269f540) at bulk_to_next.c:117
#4  0x00007f22fec8901f in netsnmp_call_handler (reginfo=0x256b3f0,
reqinfo=0x269ed60, requests=0x269f540) at agent_handler.c:435
#5  netsnmp_call_handlers (reginfo=0x256b3f0, reqinfo=0x269ed60,
requests=0x269f540) at agent_handler.c:516
#6  0x00007f22fec7a311 in handle_var_requests (asp=0x269f180) at
snmp_agent.c:2530
#7  0x00007f22fec7b4a0 in handle_getnext_loop (asp=0x269f180) at
snmp_agent.c:2970
#8  0x00007f22fec7e3b0 in netsnmp_handle_request (asp=0x269f180,
status=<value optimized out>) at snmp_agent.c:3122
#9  0x00007f22fec7ee9a in handle_snmp_packet (op=<value optimized
out>, session=<value optimized out>, reqid=<value optimized out>,
pdu=<value optimized out>, magic=<value optimized out>) at
snmp_agent.c:1852
#10 0x00007f22fe476988 in _sess_process_packet (sessp=<value optimized
out>, sp=0x26987e0, isp=0x26984a0, transport=<value optimized out>,
opaque=0x26a0000, olength=<value optimized out>,
    packetptr=0x26a1970
"0\201\213\002\001\003\060\021\002\004\021\a\234m\002\003",
length=142) at snmp_api.c:5326
#11 0x00007f22fe477705 in _sess_read (sessp=0x26987b0, fdset=<value
optimized out>) at snmp_api.c:5742
#12 0x00007f22fe477fa9 in snmp_sess_read (sessp=0x3, fdset=0x2699b20)
at snmp_api.c:5761
#13 0x00007f22fe477ffb in snmp_read (fdset=0x7fff211ea260) at snmp_api.c:5378
#14 0x0000000000404d6b in main ()

I can make more debugging or provide more information as necessary.

Best regards,
Remigiusz Swic



-- System Information:
Debian Release: squeeze/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.32-trunk-amd64 (SMP w/8 CPU cores)
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)
Shell: /bin/sh linked to /bin/dash

Versions of packages snmpd depends on:
ii  adduser                3.112             add and remove users and groups
ii  debconf [debconf-2.0]  1.5.30            Debian configuration management sy
ii  libc6                  2.10.2-6          Embedded GNU C Library: Shared lib
ii  libsnmp15              5.4.2.1~dfsg-5+b1 SNMP (Simple Network Management Pr
ii  libwrap0               7.6.q-18          Wietse Venema's TCP wrappers libra
ii  lsb-base               3.2-23            Linux Standard Base 3.2 init scrip

snmpd recommends no packages.

snmpd suggests no packages.

-- debconf information:
  snmpd/upgradefrom521: