tick/broadcast: Prevent NULL pointer dereference

When a disfunctional timer, e.g. dummy timer, is installed, the tick core
tries to setup the broadcast timer.

If no broadcast device is installed, the kernel crashes with a NULL pointer
dereference in tick_broadcast_setup_oneshot() because the function has no
sanity check.

Reported-by: Mason <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Anna-Maria Gleixner <[email protected]>
Cc: Richard Cochran <[email protected]>
Cc: Sebastian Andrzej Siewior <[email protected]>
Cc: Daniel Lezcano <[email protected]>
Cc: Peter Zijlstra <[email protected]>,
Cc: Sebastian Frias <[email protected]>
Cc: Thibaud Cornic <[email protected]>
Cc: Robin Murphy <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]

0 files changed, 0 insertions, 0 deletions