Squid crashes with "assertion failed" mem->swapout.sio

[Ioannis Stoilis]

Binary package hint: squid3

Squid3 commonly crashes several times a day with no apparent reason. Up until now I used squid which worked fine. This happens after upgrading to squid3.

In /var/log/squid3/cache.log, the last lines are:
2009/06/25 13:10:51| ctx: exit level 0
2009/06/25 13:10:51| clientParseRequestMethod: Unsupported method in request '^C'
2009/06/25 13:10:51| clientProcessRequest: Invalid Request
2009/06/25 13:12:52| assertion failed: store_swapout.cc:317: "mem->swapout.sio == self"

In syslog, this is reported:
Squid Parent: child process 20916 exited due to signal 6

# lsb_release -rd
Description: Ubuntu 9.04
Release: 9.04
# apt-cache policy squid3
squid3:
  Installed: 3.0.STABLE8-3
  Candidate: 3.0.STABLE8-3
  Version table:
 *** 3.0.STABLE8-3 0
        500 http://gr.archive.ubuntu.com jaunty/universe Packages
        100 /var/lib/dpkg/status

[siknasa9 (randy-curry666)]

Also happening on Lucid X86_64 every time I boot.

[Clint Byrum (clint-fewbar)]

Confirmed by at least 3 Ubuntu users in this bug report:

http://pad.lv/392077

However, the report is rather old, so its possible this has been fixed in newer releases. Here is the original description from the original reporter:

Squid3 commonly crashes several times a day with no apparent reason. Up until now I used squid which worked fine. This happens after upgrading to squid3.

In /var/log/squid3/cache.log, the last lines are:
2009/06/25 13:10:51| ctx: exit level 0
2009/06/25 13:10:51| clientParseRequestMethod: Unsupported method in request '^C'
2009/06/25 13:10:51| clientProcessRequest: Invalid Request
2009/06/25 13:12:52| assertion failed: store_swapout.cc:317: "mem->swapout.sio == self"

In syslog, this is reported:
Squid Parent: child process 20916 exited due to signal 6

# lsb_release -rd
Description: Ubuntu 9.04
Release: 9.04
# apt-cache policy squid3
squid3:
  Installed: 3.0.STABLE8-3
  Candidate: 3.0.STABLE8-3
  Version table:
 *** 3.0.STABLE8-3 0
        500 http://gr.archive.ubuntu.com jaunty/universe Packages
        100 /var/lib/dpkg/status

[Amos Jeffries (yadi)]

Please confirm this is still present in the current releases.

[Clint Byrum (clint-fewbar)]

Please if any users experience additional similar forward a full stack trace to the upstream bug!

[Amos Jeffries (yadi)]

Marking as duplicate of newer bug report since traces there are more recent.

*** This bug has been marked as a duplicate of bug 3852 ***

[Robie Basak (racb)]

This bug appears still open upstream, so I'll reopen it here. However, it looks like upstream don't have enough information to address the bug, so I'm marking this bug as Incomplete in Ubuntu also.

If you have further information to help developers fix the bug, then please participate here and at http://bugs.squid-cache.org/show_bug.cgi?id=3852.