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authorKeshavamurthy Anil S <anil.s.keshavamurthy@intel.com>2005-12-12 00:37:33 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2005-12-12 08:57:45 -0800
commit00d7c05ab168c10f9b520e07400923267bc04419 (patch)
tree5899743965a801e34e7dc6bfe59dba20ba023540 /kernel
parentcda315aba34ff4fb66bbb2945b723688f3414a75 (diff)
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[PATCH] kprobes: no probes on critical path
For Kprobes critical path is the path from debug break exception handler till the control reaches kprobes exception code. No probes can be supported in this path as we will end up in recursion. This patch prevents this by moving the below function to safe __kprobes section onto which no probes can be inserted. Signed-off-by: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/sys.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/sys.c b/kernel/sys.c
index bce933e..eecf845 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -32,6 +32,7 @@
#include <linux/compat.h>
#include <linux/syscalls.h>
+#include <linux/kprobes.h>
#include <asm/uaccess.h>
#include <asm/io.h>
@@ -168,7 +169,7 @@ EXPORT_SYMBOL(notifier_chain_unregister);
* of the last notifier function called.
*/
-int notifier_call_chain(struct notifier_block **n, unsigned long val, void *v)
+int __kprobes notifier_call_chain(struct notifier_block **n, unsigned long val, void *v)
{
int ret=NOTIFY_DONE;
struct notifier_block *nb = *n;