Matt Johnston dc121c0084 mctp: make __mctp_dev_get() take a refcount hold ... Previously there was a race that could allow the mctp_dev refcount to hit zero: rcu_read_lock(); mdev = __mctp_dev_get(dev); // mctp_unregister() happens here, mdev->refs hits zero mctp_dev_hold(dev); rcu_read_unlock(); Now we make __mctp_dev_get() take the hold itself. It is safe to test against the zero refcount because __mctp_dev_get() is called holding rcu_read_lock and mctp_dev uses kfree_rcu(). Reported-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Matt Johnston <matt@codeconstruct.com.au> Signed-off-by: David S. Miller <davem@davemloft.net>		2022-02-23 12:29:15 +00:00
..
route-test.c	mctp: Allow keys matching any local address	2022-02-09 12:00:11 +00:00
utils.c	mctp: make __mctp_dev_get() take a refcount hold	2022-02-23 12:29:15 +00:00
utils.h	mctp: Add test utils	2021-10-03 14:35:41 +01:00