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FUTEX: Restore the dropped ERSCH fix 

The return value of futex_find_get_task() needs to be -ESRCH in case
that the search fails.  This was part of the original futex fixes and
got accidentally dropped, when the futex-tidy-up patch was split out.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Stable Team <stable@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Thomas Gleixner 2007-06-23 11:48:40 +02:00 committed by Linus Torvalds
parent b2510b1696
commit a06381fec7
1 changed files with 6 additions and 8 deletions
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14
kernel/futex.c
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@ -409,14 +409,12 @@ static struct task_struct * futex_find_get_task(pid_t pid)
rcu_read_lock();
p = find_task_by_pid(pid);
if (!p)
goto out_unlock;
if ((current->euid != p->euid) && (current->euid != p->uid)) {
p = NULL;
goto out_unlock;
}
get_task_struct(p);
out_unlock:
if (!p || ((current->euid != p->euid) && (current->euid != p->uid)))
p = ERR_PTR(-ESRCH);
else
get_task_struct(p);
rcu_read_unlock();
return p;