Bug#550840: UPD: apache2-mpm-prefork: reload does not work: childs hangs on FUTEX_WAIT_PRIVATE

December 17th, 2011 - 12:20 pm ET by Claus Herwig | Report spam
This is an OpenPGP/MIME signed message (RFC 2440 and 3156)

found: 2.2.16-6+squeeze4

is this bug still (or again?) present in Debian Squeeze?

I think I hit this problem multiple times during last week, getting
something like:

hostname:/# strace -p 22854
Process 22854 attached - interrupt to quit
futex(0x7f1dc6f96550, FUTEX_WAIT_PRIVATE, 2, NULL^C <unfinished ...>
Process 22854 detached
hostname:/#

After finding this bugreport I disabled ipv6 on the server which seems
to fix the issue.




List of enabled modules from 'apache2 -M':
alias auth_basic auth_pam auth_sys_group authn_file authz_default
authz_groupfile authz_host authz_user autoindex deflate dir env
macro mime php5 rewrite setenvif status
List of enabled php5 extensions:
curl gd mcrypt mysql mysqli pdo pdo_mysql suhosin

Debian Release: 6.0.3
APT prefers stable
APT policy: (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.26-2-xen-amd64 (SMP w/1 CPU core)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages apache2-mpm-prefork depends on:
ii apache2.2-bin 2.2.16-6+squeeze4 Apache HTTP Server common
binary f
ii apache2.2-common 2.2.16-6+squeeze4 Apache HTTP Server common files

apache2-mpm-prefork recommends no packages.

apache2-mpm-prefork suggests no packages.



CHECON EDV-Consulting und Redaktion
Claus Herwig * Barer Straße 70 * 80799 München
+49 89 27826981 * Fax 27826982 * c.herwig@checon.de








To UNSUBSCRIBE, email to debian-bugs-dist-REQUEST@lists.debian.org
with a subject of "unsubscribe". Trouble? Contact listmaster@lists.debian.org
email Follow the discussionReplies 1 replyReplies Make a reply

Similar topics

Replies

#1 Stefan Fritsch
December 18th, 2011 - 05:50 am ET | Report spam
On Saturday 17 December 2011, Claus Herwig wrote:
is this bug still (or again?) present in Debian Squeeze?

I think I hit this problem multiple times during last week, getting
something like:

hostname:/# strace -p 22854
Process 22854 attached - interrupt to quit
futex(0x7f1dc6f96550, FUTEX_WAIT_PRIVATE, 2, NULL^C <unfinished
...> Process 22854 detached
hostname:/#

After finding this bugreport I disabled ipv6 on the server which
seems to fix the issue.



This is likely a bug in glibc's resolver or (maybe) in libcurl.

Can you please also provide a backtrace to check that you have
encountered the same issue? The process is described in

/usr/share/doc/apache2.2-common/README.backtrace

Please also install libc6-dbg and libcurl3-dbg.



To UNSUBSCRIBE, email to
with a subject of "unsubscribe". Trouble? Contact
email Follow the discussion Replies Reply to this message
Help Create a new topicReplies Make a reply
Search Make your own search