[squid-users] squid exiting on signal 6

[Ludovit Koren]

Hi,

I am running squid-5.7 on FreeBSD 12.3-STABLE r371879. Occasionally I
get the following error:

Oct 12 09:40:59 xxxxx kernel: pid 88291 (squid), jid 0, uid 100: exited on signal 6 (core dumped)
Oct 12 09:40:59 xxxxx squid[76820]: Squid Parent: squid-1 process 88291 exited due to signal 6 with status 0
Oct 12 09:40:59 xxxxx squid[76820]: Squid Parent: (squid-1) process 89357 started

>From backtrace I get:

gdb /usr/local/sbin/squid squid.core 
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Reading symbols from /usr/local/sbin/squid...
[New LWP 102541]
Core was generated by `(squid-1) --kid squid-1 -f /usr/local/etc/squid/squid.conf'.
Program terminated with signal SIGABRT, Aborted.
Sent by thr_kill() from pid 88291 and user 100.
#0  thr_kill () at thr_kill.S:3
3       RSYSCALL(thr_kill)
(gdb) bt
#0  thr_kill () at thr_kill.S:3
#1  0x000000080112fd44 in __raise (s=s at entry=6) at /usr/src/lib/libc/gen/raise.c:52
#2  0x00000008010a8409 in abort () at /usr/src/lib/libc/stdlib/abort.c:67
#3  0x000000080111fcb1 in __assert (func=<optimized out>, file=<optimized out>, line=<optimized out>, failedexpr=<optimized out>) at /usr/src/lib/libc/gen/assert.c:51
#4  0x0000000000698fcd in Ip::Address::getAddrInfo (this=0x861c04588, dst=<optimized out>, force=0) at Address.cc:663
#5  0x000000000068b732 in comm_openex (sock_type=sock_type at entry=1, proto=proto at entry=6, addr=..., flags=1, note=0x85ce42dc0 "[fe80::21f:29ff:fe28:7017]") at comm.cc:347
#6  0x00000000006dcdb9 in Comm::ConnOpener::createFd (this=this at entry=0x85e66b8b8) at ConnOpener.cc:288
#7  0x00000000006dcb72 in Comm::ConnOpener::start (this=0x85e66b8b8) at ConnOpener.cc:261
#8  0x0000000000682294 in JobDialer<AsyncJob>::dial (this=0x85390c798, call=...) at ../../src/base/AsyncJobCalls.h:175
#9  0x000000000067e9bb in AsyncCall::make (this=0x85390c760) at AsyncCall.cc:44
#10 0x000000000067fa91 in AsyncCallQueue::fireNext (this=<optimized out>, this at entry=0x801c00740) at AsyncCallQueue.cc:60
#11 0x000000000067f6e8 in AsyncCallQueue::fire (this=0x801c00740) at AsyncCallQueue.cc:43
#12 0x00000000004914f2 in EventLoop::dispatchCalls (this=<optimized out>) at EventLoop.cc:144
#13 EventLoop::runOnce (this=this at entry=0x7fffffffe9d0) at EventLoop.cc:121
#14 0x0000000000491418 in EventLoop::run (this=0x7fffffffe9d0) at EventLoop.cc:83
#15 0x00000000005792a8 in SquidMain (argc=<optimized out>, argc at entry=5, argv=<optimized out>, argv at entry=0x7fffffffeab8) at main.cc:1719
#16 0x00000000005786a0 in SquidMainSafe (argc=102541, argv=0x6) at main.cc:1406
#17 main (argc=102541, argv=0x6) at main.cc:1394
(gdb) 


The squid is compiled without IPv6 option, so I do not understand why it
tries to reach IPv6 address.

Please, can anybody help, why I am getting signal 6 and core dump?

Thank you very much.

Regards,

lk