[MBT] new entry in pkg kernel ""Hidden" processes after ptrace bugfix"

[bugs at pld.org.pl]

Date: 2003-04-14 13:58:59+02	Author: Jakub Bogusz (qboosh) <qboosh at pld.org.pl> 
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:

ps aux can be fixed by (applying to patch):

-+      if (!is_dumpable(tsk) || (&init_mm == mm))
++      if ((!is_dumpable(tsk) || (&init_mm == mm)) && write)

Some people are reporting Oopses after patching ptrace (I couldn't
reproduce them on 2.4.18 on UP machine) - can be fixed by:

-+#define is_dumpable(tsk)      ((tsk)->task_dumpable && (tsk)->mm->dumpable)
++#define is_dumpable(tsk)      ((tsk)->task_dumpable && (tsk)->mm && (tsk)->mm->dumpable)

But ptrace() is still broken (e.g. strace -f httpd won't work).