[squid-users] assertion failed: comm.cc:178: "fd_table[conn->fd].halfClosedReader != NULL"

[Amos Jeffries]

On 18/04/2015 9:32 p.m., Nathan Hoad wrote:
> As I mentioned earlier, this hasn't worked the because the debug
> symbols you're running gdb against don't quite match the binary in
> which the crash occurred. I would check the version of the debug
> symbols you're running gdb against versus the version of the squid
> binary that was installed. These changes can include patches and
> --configure changes, not just version changes of Squid.
> 
> I'm not sure how debug symbols are "shipped" with packages in Debian -
> under CentOS for example they are shipped separately from the squid
> package, as squid-debuginfo-<version>.rpm.


aptitude install squid3 squid3-dbg

If its a self-built Squid, caveat emptor.

Though using the source .deb to build the sources of a newer version
should also provide a custom squid3-dbg package that needs to be
installed along with the custom squid3 package.

You load the debug symbols binary on debian like so:
  gdb /usr/lib/debug/usr/lib/squid3 <core-file>

Amos

> 
> On 18 April 2015 at 18:49, HackXBack wrote:
>> [New LWP 20933]
>> [New LWP 20907]
>> [New LWP 20918]
>> [New LWP 20922]
>>
>> warning: Can't read pathname for load map: Input/output error.
>> [Thread debugging using libthread_db enabled]
>> Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
>> Core was generated by `(squid-1) -YC -f /etc/squid/squid.conf'.
>> Program terminated with signal 6, Aborted.
>> #0  0x00007f51ea275165 in raise () from /lib/x86_64-linux-gnu/libc.so.6
>> (gdb) frame 3
>> #3  0x00000000007996a3 in comm_read(RefCount<Comm::Connection> const&,
>> char*, int, RefCount<AsyncCall>&) ()
>> (gdb) print ccb->conn.p_
>> No symbol table is loaded.  Use the "file" command.
>> (gdb) print ccb->conn.p_->fd
>> No symbol table is loaded.  Use the "file" command.
>> (gdb) print conn.p_
>> No symbol table is loaded.  Use the "file" command.
>> (gdb) print conn.p_->fd
>> No symbol table is loaded.  Use the "file" command.
>> (gdb)
>>
>>
>>
>>
>> --
>> View this message in context: http://squid-web-proxy-cache.1019090.n4.nabble.com/assertion-failed-comm-cc-178-fd-table-conn-fd-halfClosedReader-NULL-tp4670726p4670803.html
>> Sent from the Squid - Users mailing list archive at Nabble.com.
>> _______________________________________________
>> squid-users mailing list
>> squid-users at lists.squid-cache.org
>> http://lists.squid-cache.org/listinfo/squid-users
> _______________________________________________
> squid-users mailing list
> squid-users at lists.squid-cache.org
> http://lists.squid-cache.org/listinfo/squid-users
>