[MBT] new ticket for pkg kernel ""Hidden" processes after ptrace bugfix"

[bugs at pld.org.pl]

Date: 2003-04-02 09:17:44+02	Author: Piotr Roszatycki (dexter) <dexter at debian.org> 
Title:         "Hidden" processes after ptrace bugfix
Ticket ID:     #629
Ticket URL:    http://bugs.pld.org.pl/?bug=629
Package:       kernel-2.4.20-4pl2
Distribution:  
Category:      doesn't work as it should
Current state: opened
Text:

After bugfix for ptrace problem some of processes are shown as swapped out. Also these processes couldn\'t be straced even by root.

ps uax|grep exim
mail      1054  0.0  0.2  2868 1144 ?        S    08:56   0:00 [exim4]

ps uax|grep apache
root      1110  0.0  1.2 139184 4792 ?       S    08:56   0:00 /usr/sbin/apache
www-data  1138  0.0  1.2 139184 4800 ?       S    08:56   0:00 [apache]
www-data  1139  0.0  1.2 139184 4800 ?       S    08:56   0:00 [apache]
www-data  1140  0.0  1.2 139184 4800 ?       S    08:56   0:00 [apache]
www-data  1141  0.0  1.2 139184 4800 ?       S    08:56   0:00 [apache]
www-data  1137  0.0  1.2 139184 4800 ?       T    08:56   0:00 [apache]

trace -p 1138
trace: ptrace(PTRACE_SYSCALL, ...): Operation not permitted
detach: ptrace(PTRACE_DETACH, ...): Operation not permitted

The main problem is that exiwhat command doesn\'t work with this kernel.

I belive there was a bugfix for bugfix on kernel mailing list.

http://marc.theaimsgroup.com/?l=linux-kernel&m=104801324800656&w=2