2010-08-22 10:22:25

by Namhyung Kim

Subject: [PATCH 1/3] ptrace: annotate lock context change on exit_ptrace()

exit_ptrace() is called within tasklist_lock context and releases it and
reacquires but was missing proper annotations. Add it.

Signed-off-by: Namhyung Kim <[email protected]>
---
kernel/ptrace.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/kernel/ptrace.c b/kernel/ptrace.c
index f34d798..4afd9b8 100644
--- a/kernel/ptrace.c
+++ b/kernel/ptrace.c
@@ -329,6 +329,8 @@ int ptrace_detach(struct task_struct *child, unsigned int data)
* and reacquire the lock.
*/
void exit_ptrace(struct task_struct *tracer)
+ __releases(&tasklist_lock)
+ __acquires(&tasklist_lock)
{
struct task_struct *p, *n;
LIST_HEAD(ptrace_dead);
--
1.7.0.4

2010-08-23 16:53:21

by Roland McGrath

Subject: Re: [PATCH 1/3] ptrace: annotate lock context change on exit_ptrace()

Acked-by: Roland McGrath <[email protected]>