Hi Net-snmp team,
We are using Net-snmp 5.7.3 in our product and our customer has reported the
below crash recently, although it was never hit in our internal tests.
Could you please confirm if this is any know issue and if a patch is available
for the same.
Using host libthread_db library "/lib64/libthread_db.so.1".
Core was generated by `/usr/sbin/snmpd -f -Lsd -M+/sw/unicorn/snmp/mibs -Dtrap
-Dusm -Dinit_mibs -I-sy'.
Program terminated with signal 6, Aborted.
#0 0x00007f22b2c14f57 in __GI_raise (sig=sig@entry=6) at
../nptl/sysdeps/unix/sysv/linux/raise.c:63
#0 0x00007f22b2c14f57 in __GI_raise (sig=sig@entry=6) at
../nptl/sysdeps/unix/sysv/linux/raise.c:63
resultvar = 0
pid = 6103
selftid = 6103
#1 0x00007f22b2c16418 in __GI_abort () at abort.c:90
save_stage = 2
act = {__sigaction_handler = {sa_handler = 0x7ffd12ecebca, sa_sigaction
= 0x7ffd12ecebca}, sa_mask = {__val = {6, 139787005871808, 2, 140724920970206,
2, 139787005862892, 1, 139787005871804, 3, 140724920970180, 12,
139787005871808, 2, 140724920970992, 11, 140724920972752}}, sa_flags = 93,
sa_restorer = 0x7}
sigs = {__val = {32, 0 <repeats 15 times>}}
#2 0x00007f22b2c52e3b in __libc_message (do_abort=do_abort@entry=2,
fmt=fmt@entry=0x7f22b2d468a0 "*** glibc detected *** %s: %s: 0x%s ***\n") at
../sysdeps/unix/sysv/linux/libc_fatal.c:197
ap = {{gp_offset = 40, fp_offset = 48, overflow_arg_area =
0x7ffd12ecf5e0, reg_save_area = 0x7ffd12ecf4f0}}
ap_copy = {{gp_offset = 16, fp_offset = 48, overflow_arg_area =
0x7ffd12ecf5e0, reg_save_area = 0x7ffd12ecf4f0}}
fd = 2
on_2 = <optimized out>
list = <optimized out>
nlist = <optimized out>
cp = <optimized out>
written = <optimized out>
#3 0x00007f22b2c589be in malloc_printerr (ptr=<optimized out>,
str=0x7f22b2d43129 "corrupted double-linked list", action=3, ar_ptr=<optimized
out>) at malloc.c:4855
buf = "0000000001806d00"
cp = <optimized out>
#4 malloc_printerr (action=3, str=0x7f22b2d43129 "corrupted double-linked
list", ptr=<optimized out>, ar_ptr=<optimized out>) at malloc.c:4836
No locals.
#5 0x00007f22b2c58c08 in malloc_consolidate (av=av@entry=0x7f22b2f81660
<main_arena>) at malloc.c:4086
fb = <optimized out>
maxfb = 0x7f22b2f816b0 <main_arena+80>
p = 0x1806b30
nextp = 0x0
unsorted_bin = 0x7f22b2f816b8 <main_arena+88>
first_unsorted = <optimized out>
nextchunk = 0x1806d00
size = 512
nextsize = <optimized out>
prevsize = <optimized out>
nextinuse = <optimized out>
bck = <optimized out>
fwd = 0x7f22b2f816d8 <main_arena+120>
#6 0x00007f22b2c59b18 in _int_free (av=0x7f22b2f81660 <main_arena>,
p=0x18730a0, have_lock=0, trim=1) at malloc.c:3977
size = 96160
fb = <optimized out>
nextchunk = 0x18739a0
nextsize = 93856
nextinuse = <optimized out>
prevsize = <optimized out>
bck = <optimized out>
fwd = <optimized out>
errstr = 0x0
locked = 1
__func__ = "_int_free"
#7 0x00007f22b4192cd8 in snmp_free_varbind () from /usr/lib64/libnetsnmp.so.30
No symbol table info available.
#8 0x00007f22b4192d24 in snmp_free_pdu () from /usr/lib64/libnetsnmp.so.30
No symbol table info available.
#9 0x00007f22b41938f5 in snmp_sess_close () from /usr/lib64/libnetsnmp.so.30
No symbol table info available.
#10 0x00007f22b4194c2f in snmp_sess_select_info2_flags () from
/usr/lib64/libnetsnmp.so.30
No symbol table info available.
#11 0x0000000000403c9a in ?? ()
No symbol table info available.
#12 0x00007f22b2c01865 in __libc_start_main (main=0x4028f0, argc=20,
ubp_av=0x7ffd12ecfb88, init=<optimized out>, fini=<optimized out>,
rtld_fini=<optimized out>, stack_end=0x7ffd12ecfb78) at libc-start.c:274
result = <optimized out>
unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, 4240236755570019627,
4212360, 140724920974208, 0, 0, -4241690438631797461, -4279196600293372629},
mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x404950, 0x7ffd12ecfb88}, data
= {prev = 0x0, cleanup = 0x0, canceltype = 4213072}}}
not_first_call = <optimized out>
#13 0x00000000004046b1 in ?? ()
No symbol table info available.
Thanks,
Kiran
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