On 2020-05-20 01:59, Jiri Slaby wrote:
On 20. 05. 20, 8:47, Raghavendra Rao Ananta wrote:
Potentially, hvc_open() can be called in parallel when two tasks calls
open() on /dev/hvcX. In such a scenario, if the
hp->ops->notifier_add()
callback in the function fails, where it sets the tty->driver
On 20. 05. 20, 8:47, Raghavendra Rao Ananta wrote:
> Potentially, hvc_open() can be called in parallel when two tasks calls
> open() on /dev/hvcX. In such a scenario, if the hp->ops->notifier_add()
> callback in the function fails, where it sets the tty->driver_data to
> NULL, the parallel hvc_open
Potentially, hvc_open() can be called in parallel when two tasks calls
open() on /dev/hvcX. In such a scenario, if the hp->ops->notifier_add()
callback in the function fails, where it sets the tty->driver_data to
NULL, the parallel hvc_open() can see this NULL and cause a memory abort.
Hence, do a
