On 08/06/2015 03:16 AM, Johannes Thumshirn wrote: > Fix panic caused by a race between men_z135_intr() and men_z135_set_termios(). > > men_z135_intr() and men_z135_set_termios() both hold the struct > uart_port::lock > spinlock, but men_z135_intr() does a spin_lock_irqsave() and > men_z135_set_termios() does a normal spin_lock(), which can lead to a deadlock > when an interrupt is called while the lock is being helt by > men_z135_set_termios(). > > This was discovered using a insmod, hardware looppback send/receive, rmmod > stress test.
Reviewed-by: Peter Hurley <pe...@hurleysoftware.com> -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
