On 03/12, Roland McGrath wrote:
So I think we need this:
@@ -181,7 +181,13 @@ static int utrace_add_engine(struct task_struct *target,
* also set. Otherwise utrace_control() or utrace_do_stop()
* might skip setting TIF_NOTIFY_RESUME upon seeing -report
utrace_set_events:
(utrace-death ((old_flags ~events) DEATH_EVENTS))
(old_flags ~events) DEATH_EVENTS) means the caller tries to
clear DEATH/QUIESCE. Why this is not allowed? And why this is not
allowed _only_ when the target runs utrace_report_death()-REPORT()?
I think this line
On 03/12, Roland McGrath wrote:
Yep. And utrace_reset() can be called because -stopped == 1.
Right.
Let me explain. Again, let's suppose D attaches engine E to the target T.
T enters utrace_report_jctl() with -stopped == 1.
D calls utrace_set_events(events = 0), this removes JCTL
