[squid-users] Squid 3.5.6 crash

[Alan]

This might be the same crash reported in another thread, or a new one.
I noticed it after upgrading from 3.3.11 to 3.5.6.

I'm using negotiate authentication (kerberos).

Auth settings:
auth_param negotiate program /usr/lib/squid/negotiate_kerberos_auth
auth_param negotiate children 80 startup=5 idle=5
auth_param negotiate keep_alive on

Logging setting:
debug_options ALL,1 29,3

Syslog:
Squid Parent: (squid-1) process 24158 exited due to signal 6 with status 0

cache.log:
2015/07/29 19:32:09.728 kid1| User.cc(305) addIp: user 'LinArlene at TUV.GROUP'
has been seen at a new IP address (10.144.138.48:58283)
2015/07/29 19:32:11.677 kid1| User.cc(185) cacheCleanup: Cleaning the user
cache now
2015/07/29 19:32:11.677 kid1| User.cc(186) cacheCleanup: Current time:
1438169531
2015/07/29 19:32:23 kid1| Set Current Directory to /var/cache/squid
2015/07/29 19:32:23 kid1| Starting Squid Cache version 3.5.6 for
i686-pc-linux-gnu...


Backtrace:

Core was generated by `(squid-1)'.
Program terminated with signal 6, Aborted.
#0  0xb7792424 in __kernel_vsyscall ()
(gdb) bt
#0  0xb7792424 in __kernel_vsyscall ()
#1  0xb7372bf1 in raise () from /lib/libc.so.6
#2  0xb73743ce in abort () from /lib/libc.so.6
#3  0xb736b798 in __assert_fail () from /lib/libc.so.6
#4  0x08460627 in hash_remove_link (hid=0x872f098, hl=0xe739580) at
hash.cc:240
#5  0x0831dc4a in Auth::User::cacheCleanup (datanotused=0x0) at User.cc:208
#6  0x08226795 in EventDialer::dial (this=0x14f535dc) at event.cc:41
#7  0x08226a2d in AsyncCallT<EventDialer>::fire (this=0x14f535c0) at
../src/base/AsyncCall.h:145
#8  0x0835fa28 in AsyncCall::make (this=0x14f535c0) at AsyncCall.cc:40
#9  0x08362f9f in AsyncCallQueue::fireNext (this=0x872f100) at
AsyncCallQueue.cc:56
#10 0x08362d32 in AsyncCallQueue::fire (this=0x872f100) at
AsyncCallQueue.cc:42
#11 0x08226f5f in EventLoop::dispatchCalls (this=0xbfaa66c8) at
EventLoop.cc:143
#12 0x08226dad in EventLoop::runOnce (this=0xbfaa66c8) at EventLoop.cc:108
#13 0x08226c96 in EventLoop::run (this=0xbfaa66c8) at EventLoop.cc:82
#14 0x0827f753 in SquidMain (argc=1, argv=0xbfaa6844) at main.cc:1511
#15 0x0827eb9f in SquidMainSafe (argc=1, argv=0xbfaa6844) at main.cc:1243
#16 0x0827eb84 in main (argc=1, argv=0xbfaa6844) at main.cc:1236
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