Nginx Core dump(corrupted double-linked list)
heijiu
nginx-forum at forum.nginx.org
Tue Dec 27 12:11:00 UTC 2016
gdb /opt/nginx/sbin/nginx /tmp/core.29382
GNU gdb (GDB) Red Hat Enterprise Linux 7.6.1-80.el7
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This GDB was configured as "x86_64-redhat-linux-gnu".
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<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /opt/nginx/sbin/nginx...done.
[New LWP 29382]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Core was generated by `nginx: worker process'.
Program terminated with signal 6, Aborted.
#0 0x00007f72fa7f41d7 in __GI_raise (sig=sig at entry=6) at
../nptl/sysdeps/unix/sysv/linux/raise.c:56
56 return INLINE_SYSCALL (tgkill, 3, pid, selftid, sig);
Missing separate debuginfos, use: debuginfo-install
keyutils-libs-1.5.8-3.el7.x86_64 krb5-libs-1.13.2-12.el7_2.x86_64
libcom_err-1.42.9-7.el7.x86_64 libgcc-4.8.5-4.el7.x86_64
libselinux-2.5-6.el7.x86_64 nss-softokn-freebl-3.16.2.3-14.2.el7_2.x86_64
openssl-libs-1.0.1e-51.el7_2.7.x86_64 pcre-8.32-15.el7_2.1.x86_64
zlib-1.2.7-15.el7.x86_64
(gdb) backtrace full
#0 0x00007f72fa7f41d7 in __GI_raise (sig=sig at entry=6) at
../nptl/sysdeps/unix/sysv/linux/raise.c:56
resultvar = 0
pid = 29382
selftid = 29382
#1 0x00007f72fa7f58c8 in __GI_abort () at abort.c:90
save_stage = 2
act = {__sigaction_handler = {sa_handler = 0x7fff690e197a,
sa_sigaction = 0x7fff690e197a}, sa_mask = {__val = {6, 140131806992327, 2,
140734955919758, 2, 140131806983591, 1,
140131806992323, 3, 140734955919732, 12, 140131806992327, 2,
140734955920544, 140734955920544, 140734955922304}}, sa_flags = 23,
sa_restorer = 0x7fff690e1ea0}
sigs = {__val = {32, 0 <repeats 15 times>}}
#2 0x00007f72fa833f07 in __libc_message (do_abort=do_abort at entry=2,
fmt=fmt at entry=0x7f72fa93eb48 "*** Error in `%s': %s: 0x%s ***\n") at
../sysdeps/unix/sysv/linux/libc_fatal.c:196
ap = {{gp_offset = 40, fp_offset = 48, overflow_arg_area =
0x7fff690e2390, reg_save_area = 0x7fff690e22a0}}
ap_copy = {{gp_offset = 16, fp_offset = 48, overflow_arg_area =
0x7fff690e2390, reg_save_area = 0x7fff690e22a0}}
fd = 2
on_2 = <optimized out>
list = <optimized out>
nlist = <optimized out>
cp = <optimized out>
written = <optimized out>
#3 0x00007f72fa839da4 in malloc_printerr (action=<optimized out>,
str=0x7f72fa93c1f7 "corrupted double-linked list", ptr=<optimized out>,
ar_ptr=<optimized out>) at malloc.c:5013
buf = "0000000001604b80"
cp = <optimized out>
ar_ptr = <optimized out>
ptr = <optimized out>
str = 0x7f72fa93c1f7 "corrupted double-linked list"
action = <optimized out>
#4 0x00007f72fa83b595 in _int_free (av=0x7f72fab79760 <main_arena>,
p=0x1602b70, have_lock=0) at malloc.c:3993
size = 8208
fb = <optimized out>
nextchunk = 0x1604b80
nextsize = 608
nextinuse = <optimized out>
prevsize = <optimized out>
---Type <return> to continue, or q <return> to quit---
bck = <optimized out>
fwd = <optimized out>
errstr = 0x0
locked = <optimized out>
#5 0x0000000000413fa5 in ngx_destroy_pool (pool=0x169a730) at
src/core/ngx_palloc.c:90
p = 0x1602b80
n = 0x0
l = 0x0
c = 0x0
#6 0x0000000000470260 in ngx_http_free_request (r=0x169a780, rc=0) at
src/http/ngx_http_request.c:3494
log = 0x1605420
pool = 0x169a730
linger = {l_onoff = 1762534672, l_linger = 32767}
cln = 0x0
ctx = 0x16054c8
clcf = 0x16044b0
#7 0x000000000046edfa in ngx_http_set_keepalive (r=0x169a780) at
src/http/ngx_http_request.c:2896
tcp_nodelay = 32767
i = 4830762
b = 0x153b120
f = 0x7fff690e2540
rev = 0x15c9d70
wev = 0x169a780
c = 0x1596de0
hc = 0x1605480
cscf = 0x0
clcf = 0x155f2f0
#8 0x000000000046e2a9 in ngx_http_finalize_connection (r=0x169a780) at
src/http/ngx_http_request.c:2545
clcf = 0x155f2f0
#9 0x000000000046def5 in ngx_http_finalize_request (r=0x169a780, rc=0) at
src/http/ngx_http_request.c:2441
c = 0x1596de0
pr = 0x1
---Type <return> to continue, or q <return> to quit---
clcf = 0x0
#10 0x000000000048b2d2 in ngx_http_upstream_finalize_request (r=0x169a780,
u=0x169b8f0, rc=0) at src/http/ngx_http_upstream.c:4217
flush = 0
#11 0x000000000048a360 in ngx_http_upstream_process_request (r=0x169a780,
u=0x169b8f0) at src/http/ngx_http_upstream.c:3806
tf = 0x15cac10
p = 0x169bd60
#12 0x000000000048a09e in ngx_http_upstream_process_upstream (r=0x169a780,
u=0x169b8f0) at src/http/ngx_http_upstream.c:3733
rev = 0x15cac10
p = 0x169bd60
c = 0x1599000
#13 0x00000000004887d4 in ngx_http_upstream_send_response (r=0x169a780,
u=0x169b8f0) at src/http/ngx_http_upstream.c:3001
tcp_nodelay = 0
n = 7382200
rc = 0
p = 0x169bd60
c = 0x1596de0
clcf = 0x155f2f0
#14 0x00000000004868f1 in ngx_http_upstream_process_header (r=0x169a780,
u=0x169b8f0) at src/http/ngx_http_upstream.c:2190
n = 2168
rc = 0
c = 0x1599000
#15 0x0000000000484566 in ngx_http_upstream_handler (ev=0x15cac10) at
src/http/ngx_http_upstream.c:1117
c = 0x1596de0
r = 0x169a780
u = 0x169b8f0
#16 0x000000000044d9fe in ngx_epoll_process_events (cycle=0x1536c30,
timer=500, flags=1) at src/event/modules/ngx_epoll_module.c:822
events = 1
revents = 8197
instance = 0
i = 0
level = 4462210
err = 0
---Type <return> to continue, or q <return> to quit---
rev = 0x15cac10
wev = 0x15e1cc0
queue = 0x717f80 <ngx_event_timer_sentinel>
c = 0x1599000
#17 0x000000000043db8d in ngx_process_events_and_timers (cycle=0x1536c30) at
src/event/ngx_event.c:242
flags = 1
timer = 500
delta = 1482827685782
#18 0x000000000044b547 in ngx_worker_process_cycle (cycle=0x1536c30,
data=0x1) at src/os/unix/ngx_process_cycle.c:753
worker = 1
#19 0x0000000000447e43 in ngx_spawn_process (cycle=0x1536c30, proc=0x44b452
<ngx_worker_process_cycle>, data=0x1, name=0x4e2ef3 "worker process",
respawn=1) at src/os/unix/ngx_process.c:198
on = 1
pid = 0
s = 1
#20 0x000000000044aff3 in ngx_reap_children (cycle=0x1536c30) at
src/os/unix/ngx_process_cycle.c:621
i = 1
n = 8
live = 1
ch = {command = 2, pid = 22219, slot = 1, fd = -1}
ccf = 0x716d24 <cached_http_log_time+324>
#21 0x0000000000449c10 in ngx_master_process_cycle (cycle=0x1536c30) at
src/os/unix/ngx_process_cycle.c:174
title = 0x158bd1c "master process /opt/nginx/sbin/nginx"
p = 0x158bd40 ""
size = 37
i = 1
n = 140734955924112
sigio = 0
set = {__val = {0 <repeats 16 times>}}
itv = {it_interval = {tv_sec = 140734955924112, tv_usec =
140131829646774}, it_value = {tv_sec = 14, tv_usec = 25}}
live = 1
delay = 0
ls = 0x0
---Type <return> to continue, or q <return> to quit---
ccf = 0x1538738
#22 0x00000000004101d9 in main (argc=1, argv=0x7fff690e2df8) at
src/core/nginx.c:367
b = 0x0
log = 0x715880 <ngx_log>
i = 0
cycle = 0x1536c30
init_cycle = {conf_ctx = 0x0, pool = 0x1535f50, log = 0x715880
<ngx_log>, new_log = {log_level = 0, file = 0x0, connection = 0,
disk_full_time = 0, handler = 0x0, data = 0x0,
writer = 0x0, wdata = 0x0, action = 0x0, next = 0x0},
log_use_stderr = 0, files = 0x0, free_connections = 0x0, free_connection_n =
0, modules = 0x0, modules_n = 0,
modules_used = 0, reusable_connections_queue = {prev = 0x0, next =
0x0}, listening = {elts = 0x0, nelts = 0, size = 0, nalloc = 0, pool = 0x0},
paths = {elts = 0x0, nelts = 0,
size = 0, nalloc = 0, pool = 0x0}, config_dump = {elts = 0x0,
nelts = 0, size = 0, nalloc = 0, pool = 0x0}, open_files = {last = 0x0, part
= {elts = 0x0, nelts = 0, next = 0x0},
size = 0, nalloc = 0, pool = 0x0}, shared_memory = {last = 0x0,
part = {elts = 0x0, nelts = 0, next = 0x0}, size = 0, nalloc = 0, pool =
0x0}, connection_n = 0, files_n = 0,
connections = 0x0, read_events = 0x0, write_events = 0x0,
old_cycle = 0x0, conf_file = {len = 26, data = 0x1535fa0 "\002"}, conf_param
= {len = 0, data = 0x0}, conf_prefix = {
len = 16, data = 0x1535fa0 "\002"}, prefix = {len = 11, data =
0x4de686 "/opt/nginx/"}, lock_file = {len = 0, data = 0x0}, hostname = {len
= 0, data = 0x0}}
cd = 0x4dda40 <__libc_csu_init>
ccf = 0x1538738
Posted at Nginx Forum: https://forum.nginx.org/read.php?2,271720,271720#msg-271720
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