On Wed, 22 Aug 2007 20:55:39 +0400 Oleg Nesterov wrote:

so "fixes http://bugzilla.kernel.org/show_bug.cgi?id=8921";  ??


> Spotted by Marcin Kowalczyk <[EMAIL PROTECTED]>.
> 
> sys_setpgid(child) fails if the child was forked by sub-thread.
> 
> Fix the "is it our child" check. The previous commit
> ee0acf90d320c29916ba8c5c1b2e908d81f5057d was not complete.
> 
> (this patch asks for the new same_thread_group() helper, but mainline doesn't
>  have it yet).
> 
> Signed-off-by: Oleg Nesterov <[EMAIL PROTECTED]>
> 
> --- t/kernel/sys.c~SETPGID    2007-08-09 19:59:27.000000000 +0400
> +++ t/kernel/sys.c    2007-08-22 20:11:23.000000000 +0400
> @@ -1442,7 +1442,6 @@ asmlinkage long sys_times(struct tms __u
>   * Auch. Had to add the 'did_exec' flag to conform completely to POSIX.
>   * LBT 04.03.94
>   */
> -
>  asmlinkage long sys_setpgid(pid_t pid, pid_t pgid)
>  {
>       struct task_struct *p;
> @@ -1470,7 +1469,7 @@ asmlinkage long sys_setpgid(pid_t pid, p
>       if (!thread_group_leader(p))
>               goto out;
>  
> -     if (p->real_parent == group_leader) {
> +     if (p->real_parent->tgid == group_leader->tgid) {
>               err = -EPERM;
>               if (task_session(p) != task_session(group_leader))
>                       goto out;
> 
> -

---
~Randy
*** Remember to use Documentation/SubmitChecklist when testing your code ***
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Reply via email to