[squid-users] squid5: assert with IPv6 address

[Alex Rousskov]

On 11/30/21 12:19 PM, Jason Spashett wrote:
> Hello Folks,
> 
> We are running squid5, and have noticed that squid asserts when an
> ipv6 address is used. In fact the initial problem was noticed when
> squid's resolver returned, and used an ip v6 address. Browsing to
> [2001:4860:4864:5::6d] can cause the assertion

AFAICT, this assertion is tracked as Bug 5154:
https://bugs.squid-cache.org/show_bug.cgi?id=5154

HTH,

Alex.



> The situation seems to be similar to this older bug, but I have not
> worked through it yet:
> https://bugs.squid-cache.org/show_bug.cgi?id=3732. So this would
> appear to be a bug, but perhaps there is something on the OS that
> isn't correct.
> 
> Note that ipv6 is disabled in configure, and we also have the sysctl setting:
> net.ipv6.conf.all.disable_ipv6 = 1
> 
> $ ./squid --version
> Squid Cache: Version 5.2-VCS
> Service Name: squid
> 
> This binary uses OpenSSL 1.1.1  11 Sep 2018. For legal restrictions on
> distribution see https://www.openssl.org/source/license.html
> 
> configure options:  '--disable-arch-native'
> '--disable-dependency-tracking' '--disable-eui' '--enable-auth'
> '--enable-basic-auth-helpers=getpwnam,LDAP,PAM'
> '--enable-digest-auth-helpers=password'
> '--enable-external-acl-helpers=file_userip,LDAP_group,unix_group'
> '--enable-follow-x-forwarded-for' '--enable-ssl-crtd'
> '--enable-translation' '--localstatedir=/var'
> '--with-logdir=/var/log/squid' '--with-openssl' '--disable-ipv6'
> '--enable-linux-netfilter' '--prefix=/usr/local/squid5
> 
> 
> The stack trace follows:
> -------------------------------
> 
> Program terminated with signal SIGABRT, Aborted.
> #0  0x00007fbea1047fb7 in raise () from /lib/x86_64-linux-gnu/libc.so.6
> (gdb) bt
> #0  0x00007fbea1047fb7 in raise () from /lib/x86_64-linux-gnu/libc.so.6
> #1  0x00007fbea1049921 in abort () from /lib/x86_64-linux-gnu/libc.so.6
> #2  0x00007fbea103948a in ?? () from /lib/x86_64-linux-gnu/libc.so.6
> #3  0x00007fbea1039502 in __assert_fail () from /lib/x86_64-linux-gnu/libc.so.6
> #4  0x000055a0706a3edc in Ip::Address::getAddrInfo
> (this=this at entry=0x55a07d191c28, dst=@0x7ffc00c10480: 0x55a073de3c80,
> force=force at entry=0) at Address.cc:663
> #5  0x000055a07069f330 in comm_openex (sock_type=sock_type at entry=1,
> proto=proto at entry=6, addr=..., flags=1, note=0x55a0838a0b60
> "[2001:4860:4864:5::6d]") at comm.cc:345
> #6  0x000055a0706efe6e in Comm::ConnOpener::createFd
> (this=this at entry=0x55a079e1d258) at ConnOpener.cc:266
> #7  0x000055a0706f0973 in Comm::ConnOpener::start
> (this=0x55a079e1d258) at ConnOpener.cc:240
> #8  0x000055a070690992 in JobDialer<AsyncJob>::dial
> (this=0x55a0881f3848, call=...) at ../../src/base/AsyncJobCalls.h:175
> #9  0x000055a07068bd59 in AsyncCall::make
> (this=this at entry=0x55a0881f3810) at AsyncCall.cc:44
> #10 0x000055a07068d528 in AsyncCallQueue::fireNext
> (this=this at entry=0x55a071be1500) at AsyncCallQueue.cc:60
> #11 0x000055a07068d8dc in AsyncCallQueue::fire (this=0x55a071be1500)
> at AsyncCallQueue.cc:43
> #12 0x000055a07045e179 in EventLoop::dispatchCalls
> (this=0x7ffc00c10d50) at EventLoop.cc:144
> #13 EventLoop::runOnce (this=this at entry=0x7ffc00c10d50) at EventLoop.cc:121
> #14 0x000055a07045e268 in EventLoop::run (this=0x7ffc00c10d50) at
> EventLoop.cc:83
> #15 0x000055a07056701e in SquidMain (argc=<optimized out>,
> argv=<optimized out>) at main.cc:1716
> #16 0x000055a07040fac1 in SquidMainSafe (argv=0x7ffc00c111b8, argc=6)
> at main.cc:1403
> #17 main (argc=6, argv=0x7ffc00c111b8) at main.cc:1391
> 
> Regards,
> 
> Jason
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