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audit: do not needlessly take a lock in tty_audit_exit 

We were doing spin_lock_irq and spin_unlock_irq.  This is STOOPID.

If we were in interupt context we were already screwed and called
panic() in do_exit().  So the irq stuff is useless.  Also, these values
can only be changed by receiving a netlink message from current.  Since
we are in do_exit() clearly we aren't in the syscall sending the netlink
message to change these values.  Thus, just read them and go with it.

Signed-off-by: Eric Paris <eparis@redhat.com>
This commit is contained in:
Eric Paris 2013-04-30 10:46:46 -04:00
parent 2ce88dd042
commit bee0a224e7
1 changed files with 0 additions and 3 deletions
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3
drivers/tty/tty_audit.c
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@ -111,12 +111,9 @@ static void tty_audit_buf_push(struct tty_audit_buf *buf)
void tty_audit_exit(void)
{
struct tty_audit_buf *buf;
unsigned long flags;
spin_lock_irqsave(&current->sighand->siglock, flags);
buf = current->signal->tty_audit_buf;
current->signal->tty_audit_buf = NULL;
spin_unlock_irqrestore(&current->sighand->siglock, flags);
if (!buf)
return;