Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-24 13:11:40 +00:00
Code Issues Packages Projects Releases Wiki Activity

kprobes: refuse kprobe insertion on add/sub_preempt_counter()

Browse Source 
Kprobes makes use of preempt_disable(),preempt_enable_noresched() and these
functions inturn call add/sub_preempt_count().  So we need to refuse user from
inserting probe in to these functions.

This patch disallows user from probing add/sub_preempt_count().

Signed-off-by: Srinivasa DS <srinivasa@in.ibm.com>
Acked-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Srinivasa Ds 2008-02-23 15:24:04 -08:00 committed by Linus Torvalds
parent 0835ab53ea
commit 4362758279
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
kernel/sched.c
View File

@ -3766,7 +3766,7 @@ void scheduler_tick(void)
#if defined(CONFIG_PREEMPT) && defined(CONFIG_DEBUG_PREEMPT)
void add_preempt_count(int val)
void __kprobes add_preempt_count(int val)
{
/*
* Underflow?
@ -3782,7 +3782,7 @@ void add_preempt_count(int val)
}
EXPORT_SYMBOL(add_preempt_count);
void sub_preempt_count(int val)
void __kprobes sub_preempt_count(int val)
{
/*
* Underflow?