Thanks for posting something like this. https://www.doglikesbest.com/
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https://bugs.launchpad.net/bugs/394350
Title:
RLimitCPU has no effect in Apache
To manage notifications
The actual setrlimit is done by apr. Apache source ships with its own
coyp of the apr source under srclib, but that does not get compiled (or
used). https://get-mobdro.com
Regards, https://get-tubemate.com
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amazon.com/mytv To get into the Amazon account, you just need to be admitted to
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The actual setrlimit is done by apr. Apache source ships with its own
coyp of the apr source under srclib, but that does not get compiled (or
used).
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** Changed in: apache2 (Ubuntu)
Assignee: (unassigned) => ahmed yacoub (wheeze)
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Title:
RLimitCPU has no effect in Apache
To manage
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At last, here we go.
The file /root/apache2-2.2.17/modules/generators/mod_cgi.c has hooks to
set rlimits on spawned off instances. However, test.cgi is being
executed by /root/apache2-2.2.17/modules/generators/mod_cgid.c. It has
those hooks, but they are #ifdef'd out.
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The debian sid package also ifdefs them out, so if limits are working on
debian it must be because they are configured to use mod_cgi and not
mod_cgid?
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** Changed in: apache2 (Ubuntu)
Status: Confirmed = Triaged
** Changed in: apr (Ubuntu)
Status: Confirmed = Invalid
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At last, here we go.
The file /root/apache2-2.2.17/modules/generators/mod_cgi.c has hooks to
set rlimits on spawned off instances. However, test.cgi is being
executed by /root/apache2-2.2.17/modules/generators/mod_cgid.c. It has
those hooks, but they are #ifdef'd out.
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The debian sid package also ifdefs them out, so if limits are working on
debian it must be because they are configured to use mod_cgi and not
mod_cgid?
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** Changed in: apache2 (Ubuntu)
Status: Confirmed = Triaged
** Changed in: apr (Ubuntu)
Status: Confirmed = Invalid
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Title:
The actual setrlimit is done by apr. Apache source ships with its own
coyp of the apr source under srclib, but that does not get compiled (or
used).
Apache definately sees the RLimit_CPU configuration and sets internal
variables accordingly. I've yet to instrument the libapr1-dev code
itself to
The actual setrlimit is done by apr. Apache source ships with its own
coyp of the apr source under srclib, but that does not get compiled (or
used).
Apache definately sees the RLimit_CPU configuration and sets internal
variables accordingly. I've yet to instrument the libapr1-dev code
itself to
** Changed in: apache2 (Ubuntu)
Status: Incomplete = New
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Title:
RLimitCPU has no effect in Apache
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** Changed in: apache2 (Ubuntu)
Importance: Undecided = Medium
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Title:
RLimitCPU has no effect in Apache
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Odd that others are having trouble reproducing. It reproduces for me on
a hardy uec image. /proc/$$/limits for the test.cgi process shows
unlimited for cpu, and the script is never killed.
** Changed in: apache2 (Ubuntu)
Status: New = Confirmed
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strace -f -o/tmp/output /etc/init.d/apache2 start
followed by triggering the script - nowhere in /tmp/output does
RLIMIT_CPU get set.
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verified under natty as well
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Title:
RLimitCPU has no effect in Apache
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** Changed in: apache2 (Ubuntu)
Status: Incomplete = New
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Title:
RLimitCPU has no effect in Apache
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** Changed in: apache2 (Ubuntu)
Importance: Undecided = Medium
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Title:
RLimitCPU has no effect in Apache
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Odd that others are having trouble reproducing. It reproduces for me on
a hardy uec image. /proc/$$/limits for the test.cgi process shows
unlimited for cpu, and the script is never killed.
** Changed in: apache2 (Ubuntu)
Status: New = Confirmed
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strace -f -o/tmp/output /etc/init.d/apache2 start
followed by triggering the script - nowhere in /tmp/output does
RLIMIT_CPU get set.
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Title:
verified under natty as well
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Title:
RLimitCPU has no effect in Apache
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I was asked privately whether I found a solution. We wasted too much
time trying to convince people that we had a credible problem report,
and then it seemed that no one was prepared to actually do anything with
the information. After that time waste, we decided to give up on
RLimitCPU on
I was asked privately whether I found a solution. We wasted too much
time trying to convince people that we had a credible problem report,
and then it seemed that no one was prepared to actually do anything with
the information. After that time waste, we decided to give up on
RLimitCPU on
I am experiencing exactly the same problem as reported by Neal in 2009.
I am running the latest Apache2 from Ubuntu 10.10 repository. RLimitCPU
does not kill any of my processes.
** Changed in: apache2 (Ubuntu)
Status: Invalid = Incomplete
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I am experiencing exactly the same problem as reported by Neal in 2009.
I am running the latest Apache2 from Ubuntu 10.10 repository. RLimitCPU
does not kill any of my processes.
** Changed in: apache2 (Ubuntu)
Status: Invalid = Incomplete
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Here is the virtual host config from the procedure documented in:
https://bugs.launchpad.net/ubuntu/+source/apache2/+bug/394350/comments/15
It is file:
/etc/apache2/sites-available/default
** Attachment added: default
http://launchpadlibrarian.net/29096236/default
--
RLimitCPU has no
Here is the virtual host config from the procedure documented in:
https://bugs.launchpad.net/ubuntu/+source/apache2/+bug/394350/comments/15
It is file:
/etc/apache2/sites-available/default
** Attachment added: default
http://launchpadlibrarian.net/29096236/default
--
RLimitCPU has no
Can you attach the virtual host config that you are seeing the issue
with?
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RLimitCPU has no effect in Apache
https://bugs.launchpad.net/bugs/394350
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Can you attach the virtual host config that you are seeing the issue
with?
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RLimitCPU has no effect in Apache
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I have just reproduced the problem with a fresh install with latest
updates, and kept a detailed log as I did so. Perhaps someone can spot
something I am doing wrong? I would assume that I'm doing something
wrong, except comparable things work on Debian and with upstream, and my
users also
I have just reproduced the problem with a fresh install with latest
updates, and kept a detailed log as I did so. Perhaps someone can spot
something I am doing wrong? I would assume that I'm doing something
wrong, except comparable things work on Debian and with upstream, and my
users also
I have re-tested on i386 hardy and got the same results as ajmitch: the
test program was correctly killed. Neil, if you can post steps to
reproduce, I would be very thankful. Sorry it's not any easy problem to
uncover. :(
--
RLimitCPU has no effect in Apache
I have re-tested on i386 hardy and got the same results as ajmitch: the
test program was correctly killed. Neil, if you can post steps to
reproduce, I would be very thankful. Sorry it's not any easy problem to
uncover. :(
--
RLimitCPU has no effect in Apache
I appreciate the attempts Ubuntu people have made to reproduce the
problem, and I'm baffled that myself and my users are still easily
reproducing the problem.
I once again reproduced the problem on one of my Ubuntu configurations,
and observed through /proc/pid/limits that the limits are
Why is the status of this still Incomplete?
I realize that the holiday weekend here in the US probably interrupted
work, but it's now almost a week idling on what appears to be an Ubuntu-
specific security/stability problem for Apache servers.
I really need to know if Ubuntu has an imminent
this is Ubuntu-specific?
** Changed in: apache2 (Ubuntu)
Status: Incomplete = New
--
RLimitCPU has no effect in Apache
https://bugs.launchpad.net/bugs/394350
You received this bug notification because you are a member of Ubuntu
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What are the specific configurations you're using so that developers can
set up a test to reproduce what you're seeing?
--
RLimitCPU has no effect in Apache
https://bugs.launchpad.net/bugs/394350
You received this bug notification because you are a member of Ubuntu
Server Team, which is
Based on http://httpd.apache.org/docs/2.0/mod/core.html#rlimitcpu I set a 2
second soft and hard limit on the default website
/etc/apache2/sites-enabled/000-default:
VirtualHost *:80
ServerAdmin webmas...@localhost
RLimitCPU 2 2
...
I put the example script above into
As an added note, you can examine a process's rlimits via
/proc/$pid/limits
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https://bugs.launchpad.net/bugs/394350
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* Simply take a fresh Ubuntu 8.04 install (which gets Apache 2.2.8), add
RLimitCPU 2 2 to the default Apache site file, drop the script above
into the cgi-bin dir, and run the CGI. You'll see that the CGI
process is *not* killed.
* Do the same thing on a Debian stable system (which gets Apache
I've tested this on hardy (i386) with all updates installed. The only
difference I can see at a glance is i386 vs amd64 with regards to testing this.
I've tested with the same method as Kees, in that
/etc/apache2/sites-enabled/000-default has:
VirtualHost *
ServerAdmin
(I had not seen Kees Cook's failure to reproduce before I posted my last
message.)
I have just reproduced the problem with a fresh install of 9.04 on an
X86 box. (I do not have a fresh 8.04 install at the moment.)
I am at a loss to explain why Kees Cook could not reproduce the problem.
I wonder
Can you show that your CPU time (ps auwwx | grep test.cgi) is exceeding
the limits set (or lack of set limit) for the process that Apache spawns
(cat /proc/$(pidof test.cgi)/limits)?
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RLimitCPU has no effect in Apache
https://bugs.launchpad.net/bugs/394350
You received this bug notification
Why is the status of this still Incomplete?
I realize that the holiday weekend here in the US probably interrupted
work, but it's now almost a week idling on what appears to be an Ubuntu-
specific security/stability problem for Apache servers.
I really need to know if Ubuntu has an imminent
this is Ubuntu-specific?
** Changed in: apache2 (Ubuntu)
Status: Incomplete = New
--
RLimitCPU has no effect in Apache
https://bugs.launchpad.net/bugs/394350
You received this bug notification because you are a member of Ubuntu
Bugs, which is a direct subscriber.
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ubuntu-bugs mailing
What are the specific configurations you're using so that developers can
set up a test to reproduce what you're seeing?
--
RLimitCPU has no effect in Apache
https://bugs.launchpad.net/bugs/394350
You received this bug notification because you are a member of Ubuntu
Bugs, which is a direct
Based on http://httpd.apache.org/docs/2.0/mod/core.html#rlimitcpu I set a 2
second soft and hard limit on the default website
/etc/apache2/sites-enabled/000-default:
VirtualHost *:80
ServerAdmin webmas...@localhost
RLimitCPU 2 2
...
I put the example script above into
As an added note, you can examine a process's rlimits via
/proc/$pid/limits
--
RLimitCPU has no effect in Apache
https://bugs.launchpad.net/bugs/394350
You received this bug notification because you are a member of Ubuntu
Bugs, which is a direct subscriber.
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* Simply take a fresh Ubuntu 8.04 install (which gets Apache 2.2.8), add
RLimitCPU 2 2 to the default Apache site file, drop the script above
into the cgi-bin dir, and run the CGI. You'll see that the CGI
process is *not* killed.
* Do the same thing on a Debian stable system (which gets Apache
I've tested this on hardy (i386) with all updates installed. The only
difference I can see at a glance is i386 vs amd64 with regards to testing this.
I've tested with the same method as Kees, in that
/etc/apache2/sites-enabled/000-default has:
VirtualHost *
ServerAdmin
(I had not seen Kees Cook's failure to reproduce before I posted my last
message.)
I have just reproduced the problem with a fresh install of 9.04 on an
X86 box. (I do not have a fresh 8.04 install at the moment.)
I am at a loss to explain why Kees Cook could not reproduce the problem.
I wonder
Can you show that your CPU time (ps auwwx | grep test.cgi) is exceeding
the limits set (or lack of set limit) for the process that Apache spawns
(cat /proc/$(pidof test.cgi)/limits)?
--
RLimitCPU has no effect in Apache
https://bugs.launchpad.net/bugs/394350
You received this bug notification
I just verified that Ubuntu's 9.04's packaging of Apache 2.2.11 also
exhibits this problem.
Looking through the Ubuntu patches to upstream Apache 2.2.8 (where we
initially noticed the problem), I haven't yet found an obvious cause.
The people who did the packaging or patches on this would be
I just verified that Ubuntu's 9.04's packaging of Apache 2.2.11 also
exhibits this problem.
Looking through the Ubuntu patches to upstream Apache 2.2.8 (where we
initially noticed the problem), I haven't yet found an obvious cause.
The people who did the packaging or patches on this would be
Do you have a script or a cgi that tests this bug?
Thanks
chuck
** Changed in: apache2 (Ubuntu)
Status: New = Incomplete
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You received this bug notification because you are a member of Ubuntu
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Chuck Short wrote at 07/02/2009 09:51 AM:
Do you have a script or a cgi that tests this bug?
The following cgi-bin script can be used to trigger RLimitCPU in a
correctly functioning Apache. Setting the limits to 2 seconds of CPU
time typically permits around 10 seconds of real time to
Do you have a script or a cgi that tests this bug?
Thanks
chuck
** Changed in: apache2 (Ubuntu)
Status: New = Incomplete
--
RLimitCPU has no effect in Apache
https://bugs.launchpad.net/bugs/394350
You received this bug notification because you are a member of Ubuntu
Bugs, which is a
Chuck Short wrote at 07/02/2009 09:51 AM:
Do you have a script or a cgi that tests this bug?
The following cgi-bin script can be used to trigger RLimitCPU in a
correctly functioning Apache. Setting the limits to 2 seconds of CPU
time typically permits around 10 seconds of real time to
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