> Hi Alex/Amos
>
> Since yesterday squid is running via this method in a cron script:
>
> trap "rm -f $$.gdb" 0
> cat <<EOF >$$.gdb
> handle SIGPIPE pass nostop noprint
> handle SIGTERM pass nostop noprint
> handle SIGUSR1 pass nostop noprint
> handle SIGHUP pass
> handle SIGKILL pass
> handle SIGSEGV stop
> handle SIGABRT stop
> run -NYCd3
> backtrace
> quit
> EOF
> while sleep 2; do
> gdb -x $$.gdb /path/to/squid 2>&1 | tee -a squid.out done
Hi all,
After 2/3 days Squid has crashed:
First signal:
Program received signal SIGHUP, Hangup.
0x00007ffff41b00a3 in __epoll_wait_nocancel ()
at ../sysdeps/unix/syscall-template.S:84
84 ../sysdeps/unix/syscall-template.S: No such file or directory.
#0 0x00007ffff41b00a3 in __epoll_wait_nocancel ()
at ../sysdeps/unix/syscall-template.S:84
#1 0x00005555559783f4 in Comm::DoSelect (msec=<optimized out>)
at ModEpoll.cc:227
#2 0x000055555592197e in CommSelectEngine::checkEvents (
this=<optimized out>, timeout=<optimized out>) at comm.cc:1847
#3 0x0000555555764345 in EventLoop::checkEngine (
this=this@entry=0x7fffffffe940, engine=engine@entry=0x7fffffffe6a8,
primary=primary@entry=true) at EventLoop.cc:36
#4 0x000055555576452d in EventLoop::runOnce (this=this@entry=0x7fffffffe940)
at EventLoop.cc:115
#5 0x0000555555764648 in EventLoop::run (this=0x7fffffffe940)
at EventLoop.cc:83
#6 0x00005555557cf933 in SquidMain (argc=<optimized out>,
argv=<optimized out>) at main.cc:1707
#7 0x00005555556b53a4 in SquidMainSafe (argv=<optimized out>, argc=2)
at main.cc:1415
#8 main (argc=2, argv=0x7fffffffed68) at main.cc:1403
A debugging session is active.
The crash (assertion failed)
2018/10/24 09:44:29| assertion failed: http.cc:1530:
"!Comm::MonitorsRead(serverConnection->fd)"
Program received signal SIGABRT, Aborted.
__GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
51 ../sysdeps/unix/sysv/linux/raise.c: No such file or directory.
#0 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
#1 0x00007ffff40fb42a in __GI_abort () at abort.c:89
#2 0x000055555573c57c in xassert (
msg=msg@entry=0x555555aec788 "!Comm::MonitorsRead(serverConnection->fd)",
file=file@entry=0x555555aeb5c5 "http.cc", line=line@entry=1530)
at debug.cc:618
#3 0x00005555557a1118 in HttpStateData::maybeReadVirginBody (
this=0x5555574c6888) at http.cc:1530
#4 0x000055555579d3db in HttpStateData::sendRequest (
this=this@entry=0x5555574c6888) at http.cc:2198
#5 0x000055555579df50 in HttpStateData::start (this=0x5555574c6888)
at http.cc:2311
#6 0x00005555559156b2 in JobDialer<AsyncJob>::dial (this=0x55555db33390,
call=...) at ../../src/base/AsyncJobCalls.h:174
#7 0x00005555559110e1 in AsyncCall::make (this=this@entry=0x55555db33360)
at AsyncCall.cc:40
#8 0x00005555559124b1 in AsyncCallQueue::fireNext (
this=this@entry=0x555556105e00) at AsyncCallQueue.cc:56
#9 0x0000555555912819 in AsyncCallQueue::fire (this=0x555556105e00)
at AsyncCallQueue.cc:42
#10 0x0000555555764549 in EventLoop::dispatchCalls (this=0x7fffffffe940)
at EventLoop.cc:144
#11 EventLoop::runOnce (this=this@entry=0x7fffffffe940) at EventLoop.cc:121
#12 0x0000555555764648 in EventLoop::run (this=0x7fffffffe940)
at EventLoop.cc:83
#13 0x00005555557cf933 in SquidMain (argc=<optimized out>,
argv=<optimized out>) at main.cc:1707
#14 0x00005555556b53a4 in SquidMainSafe (argv=<optimized out>, argc=2)
at main.cc:1415
#15 main (argc=2, argv=0x7fffffffed68) at main.cc:1403
A debugging session is active.
The assertion seems to be similiar to bug
https://bugs.squid-cache.org/show_bug.cgi?id=4896 as Alex said; but I am not
sure.
Should I post there anyway?
Additional info: I can (now) reproduce the crash, it starts to happen when a
client tried to connect to a server which (Chrome) returns:
ERR_CONNECTION_RESET/EMPTY RESPONSE
I can confirm that site is not working (I tested without squid and from another
internet access)
By other hand, what can I do with those squid's crashes?
Squid info (recompiled yesterday):
Squid Cache: Version 4.3-20181021-r17614d5
Service Name: squid
This binary uses OpenSSL 1.1.0f 25 May 2017. For legal restrictions on
distribution see https://www.openssl.org/source/license.html
configure options: '--prefix=/usr' '--build=x86_64-linux-gnu'
'--libexecdir=/usr/lib/squid' '--srcdir=.' '--datadir=/usr/share/squid'
'--with-cppunit-basedir=/usr' '--enable-inline' '--enable-delay-pools'
'--sysconfdir=/etc/squid' '--with-logdir=/var/log/squid'
'--with-pidfile=/var/run/squid.pid' '--with-openssl' '--enable-ssl-crtd'
'--mandir=/usr/share/man' '--enable-arp-acl' '--enable-wccpv2'
'--with-large-files' '--with-default-user=proxy' '--enable-linux-netfilter'
'--enable-storeio=ufs,aufs,diskd,rock' '--enable-removal-policies=lru,heap'
'--enable-icap' '--enable-icap-client' '--enable-cache-digests'
'--enable-heap-replacement' 'build_alias=x86_64-linux-gnu'
If You want I post the config file.
Hope its helps,
Thank You
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