[gentoo-server] Apache segfaulting

[gentoo-server] Apache segfaulting

[A. Khattri]

Im seeing this in my Apache error logs:

[Thu Nov 30 18:28:49 2006] [notice] child pid 4278 exit signal Segmentation fault (11)
[Thu Nov 30 18:28:50 2006] [notice] child pid 4291 exit signal Segmentation fault (11)
[Thu Nov 30 18:28:52 2006] [notice] child pid 4285 exit signal Segmentation fault (11)
[Thu Nov 30 18:28:54 2006] [notice] child pid 4289 exit signal Segmentation fault (11)
[Thu Nov 30 18:28:56 2006] [notice] child pid 4293 exit signal Segmentation fault (11)
[Thu Nov 30 18:28:58 2006] [notice] child pid 4292 exit signal Segmentation fault (11)
[Thu Nov 30 18:29:00 2006] [notice] child pid 4284 exit signal Segmentation fault (11)
[Thu Nov 30 18:29:02 2006] [notice] child pid 4283 exit signal Segmentation fault (11)
[Thu Nov 30 18:29:04 2006] [notice] child pid 4282 exit signal Segmentation fault (11)
[Thu Nov 30 18:29:06 2006] [notice] child pid 4281 exit signal Segmentation fault (11)
[Thu Nov 30 18:29:07 2006] [notice] child pid 4294 exit signal Segmentation fault (11)

Any idea what might be causing this? Also, shouldn't there be a core dump
somewhere I can debug with? Where does Apache dump core dumps?



-- 
A
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Re: [gentoo-server] Apache segfaulting

[Biru Ionut]

On Thu, 2006-11-30 at 17:46 -0500, A. Khattri wrote:
> 
> Im seeing this in my Apache error logs:
> 
> [Thu Nov 30 18:28:49 2006] [notice] child pid 4278 exit signal Segmentation fault (11)
> [Thu Nov 30 18:28:50 2006] [notice] child pid 4291 exit signal Segmentation fault (11)
> [Thu Nov 30 18:28:52 2006] [notice] child pid 4285 exit signal Segmentation fault (11)
> [Thu Nov 30 18:28:54 2006] [notice] child pid 4289 exit signal Segmentation fault (11)
> [Thu Nov 30 18:28:56 2006] [notice] child pid 4293 exit signal Segmentation fault (11)
> [Thu Nov 30 18:28:58 2006] [notice] child pid 4292 exit signal Segmentation fault (11)
> [Thu Nov 30 18:29:00 2006] [notice] child pid 4284 exit signal Segmentation fault (11)
> [Thu Nov 30 18:29:02 2006] [notice] child pid 4283 exit signal Segmentation fault (11)
> [Thu Nov 30 18:29:04 2006] [notice] child pid 4282 exit signal Segmentation fault (11)
> [Thu Nov 30 18:29:06 2006] [notice] child pid 4281 exit signal Segmentation fault (11)
> [Thu Nov 30 18:29:07 2006] [notice] child pid 4294 exit signal Segmentation fault (11)
> 
> Any idea what might be causing this? Also, shouldn't there be a core dump
> somewhere I can debug with? Where does Apache dump core dumps?
> 
> 
> 
> -- 
> A
If you have kernel 2.4 you should upgrade to 2.6

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Re: [gentoo-server] Apache segfaulting

[Andrew Gaffney]

Biru Ionut wrote:
> If you have kernel 2.4 you should upgrade to 2.6

Do you have any reasoning to go along with that statement? Last I heard, the 2.4 
kernels don't cause random segfaults.

-- 
Andrew Gaffney                            http://dev.gentoo.org/~agaffney/
Gentoo Linux Developer                                   Installer Project
Today's lesson in political correctness:      "Go asphyxiate on a phallus"
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Re: [gentoo-server] Apache segfaulting

[Biru Ionut]

On Thu, 2006-11-30 at 17:57 -0600, Andrew Gaffney wrote:
> Biru Ionut wrote:
> > If you have kernel 2.4 you should upgrade to 2.6
> 
> Do you have any reasoning to go along with that statement? Last I heard, the 2.4 
> kernels don't cause random segfaults.
> 
> -- 
> Andrew Gaffney                            http://dev.gentoo.org/~agaffney/
> Gentoo Linux Developer                                   Installer Project
> Today's lesson in political correctness:      "Go asphyxiate on a phallus"
epoll_create() does not exists in kernel 2.4 and apache2 need that.


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Re: [gentoo-server] Apache segfaulting

[kashani]

Biru Ionut wrote:
> epoll_create() does not exists in kernel 2.4 and apache2 need that.

It's my understanding that only Apache 2.2 utilizing the mpm-event httpd 
server requires epoll. There are some reports that recent binary builds 
of Apache has some dependencies on epoll, specifically Debian, but if 
you're building libapr and Apache from source I'd expect them to be 
smart enough to figure out what is on the system.

kashani
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Re: [gentoo-server] Apache segfaulting

[A. Khattri]

On Fri, 1 Dec 2006, Biru Ionut wrote:

> If you have kernel 2.4 you should upgrade to 2.6

I *am* running 2.6.

I am running Apache 1.x so all the comments about Apache2 dont apply.

Also I rebuilt apache, all of my modules, PHP too.


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A
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Re: [gentoo-server] Apache segfaulting

[Andrew Gaffney]

A. Khattri wrote:
> 
> Im seeing this in my Apache error logs:
> 
> [Thu Nov 30 18:29:07 2006] [notice] child pid 4294 exit signal Segmentation fault (11)
> 
> Any idea what might be causing this? Also, shouldn't there be a core dump
> somewhere I can debug with? Where does Apache dump core dumps?

There's always the usual suspects such as bad memory or overheating. There's 
also the possibility of stupid CFLAGS. I've also seen perl and mod_php 
conflicting causing a segfault, but the only cause of that that I'm aware of was 
fixed a while ago.

-- 
Andrew Gaffney                            http://dev.gentoo.org/~agaffney/
Gentoo Linux Developer                                   Installer Project
Today's lesson in political correctness:      "Go asphyxiate on a phallus"
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Re: [gentoo-server] Apache segfaulting

[A. Khattri]

On Thu, 30 Nov 2006, Andrew Gaffney wrote:

> There's always the usual suspects such as bad memory or overheating. There's
> also the possibility of stupid CFLAGS. I've also seen perl and mod_php
> conflicting causing a segfault, but the only cause of that that I'm aware of was
> fixed a while ago.

I removed the hardnedphp USE flag from PHP and all is well now - go
figure...


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Re: [gentoo-server] Apache segfaulting

[Craig Webster]

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On 30 Nov 2006, at 22:46, A. Khattri wrote:
> [Thu Nov 30 18:28:49 2006] [notice] child pid 4278 exit signal  
> Segmentation fault (11)
>
> Any idea what might be causing this?

If you've recently upgraded Apache, try recompiling any modules you  
have emerged eg mod_php.

Cheers,
Craig
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