PHP crashing with wierd log message

[paulis]

It seems that at random times just PHP will stop responding, but Apache will continue to function. When this happens I always see something like this in the apache error logs:

ls: /var/cpanel/users/: Permission denied
ls: /var/cpanel/suspended/: No such file or directory
[Thu Oct 19 14:12:11 2006] [notice] child pid 20551 exit signal Segmentation fault (11)
[Thu Oct 19 14:12:12 2006] [notice] child pid 20578 exit signal Segmentation fault (11)
[Thu Oct 19 14:12:12 2006] [notice] child pid 20639 exit signal Segmentation fault (11)


followed by lots of additional seg faults.

Has anybody seen anything similar to this, or know what may be causing it? A search of both these forums and google didnt show anything particularly similar.

If you need it:
CentOS - 2.6.9-42.0.2.ELsmp
WHM 10.8.0 cPanel 10.8.2-R119
CentOS 4.3 x86_64 - WHM X v3.1.0

 

[Rafaelfpviana]

I've seen this alot.

Its usally when there is a lot of memory used of if the script is not managing the memory correctly.

Take a look at the definition of Segmentation Fault:

A segmentation fault (sometimes referred to as segfault for short) is a particular error condition that can occur during the operation of computer software. In short, a segmentation fault occurs when a program attempts to access a memory location that it is not allowed to access, or attempts to access a memory location in a way it is not allowed to (eg, attempts to write a read-only location). ...
http://en.wikipedia.org/wiki/Segmentation_fault

The only way you can find out what is causing this is monitoring the server and if its a shared server try to suspend those heavy users.

 

[paulis]

Thank you for your reply, but I was more concerened with the:

ls: /var/cpanel/users/: Permission denied
ls: /var/cpanel/suspended/: No such file or directory

errors. Segfaults are rather common, but these segfaults appear to always be preceeded by those two lines, which I have never seen before. I also could not find any information regarding these errors in these forums, or via a google search.