lkml.org 
[lkml]   [2005]   [May]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Subject2.4.20: pids disappear & reappear in /proc
From
Date

Hi all

I have a dual-Xeon Intel SMP box running kernel 2.4.20-20.9 (RH9, custom
build enabling some ACPI options etc).

Recently, after a reboot, I've started seeing processes disappear &
reappear in ps output. The problem seems to be in /proc itself, e.g.:

[root@za /]# cat /var/run/httpd-ssl.pid
898
[root@za /]# ls /proc/ | grep 898
[root@za /]# ls /proc/898/
cmdline cpu cwd environ exe fd maps mem mounts root stat
statm status

Process 898 is a 1.3 Apache daemon, so no threading. If I check back
later, this process might have reappeared in ps, but some other process
might have disappeared. Also, some PIDs are duplicated in /proc, but
this duplication comes and goes.

I've done lots of checking for signs of rootkits & exploits, and have
found nothing so far. Maybe hardware failure? Any suggestions welcome.


Thanks

Paolo


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-05-12 13:36    [W:0.123 / U:0.128 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site