Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=43627582799db317e966ecb0002c2c3c9805ec0f
Commit: 43627582799db317e966ecb0002c2c3c9805ec0f
Parent: 0835ab53eab5bbeebe1c135e92fb0c4d483dde17
Author: Srinivasa Ds <[EMAIL PROTECTED]>
AuthorDate: Sat Feb 23 15:24:04 2008 -0800
Committer: Linus Torvalds <[EMAIL PROTECTED]>
CommitDate: Sat Feb 23 17:13:24 2008 -0800
kprobes: refuse kprobe insertion on add/sub_preempt_counter()
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 <[EMAIL PROTECTED]>
Acked-by: Ananth N Mavinakayanahalli <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
---
kernel/sched.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/kernel/sched.c b/kernel/sched.c
index f28f19e..c4bc8c2 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -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?
-
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