On 11/24, Oleg Nesterov wrote:
>
> - if (!flag) {
> + if (flag)
> + continue;
This "last obvious cleanup right before sending the patch" is terribly wrong,
we can't continue, we must advance the tsk to the next_thread().
Please apply.
--- PT/kernel/exit.c~SEC_FIX 2007-11-26 17:10:41.000000000 +0300
+++ PT/kernel/exit.c 2007-11-27 20:41:10.000000000 +0300
@@ -1527,16 +1527,17 @@ repeat:
if (retval != 0) /* tasklist_lock released */
goto end;
}
- if (flag)
- continue;
- list_for_each_entry(p, &tsk->ptrace_children, ptrace_list) {
- flag = eligible_child(pid, options, p);
- if (!flag)
- continue;
- if (likely(flag > 0))
- break;
- retval = flag;
- goto end;
+ if (!flag) {
+ list_for_each_entry(p, &tsk->ptrace_children,
+ ptrace_list) {
+ flag = eligible_child(pid, options, p);
+ if (!flag)
+ continue;
+ if (likely(flag > 0))
+ break;
+ retval = flag;
+ goto end;
+ }
}
if (options & __WNOTHREAD)
break;
-
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