tree c0f9077bbd5b4eb462d8865d526459335b0c61ef
parent 449f14f01f65f45f332e3360aa46b3d3571b2cba
author Anton Protopopov <a.s.protopopov@gmail.com> 1455725996 -0500
committer David S. Miller <davem@davemloft.net> 1455825575 -0500

mISDN: prevent possible NULL pointer dereference

A return value of the bchannel_get_rxbuf() function is compared with the
positive ENOMEM value instead of the negative -ENOMEM value to detect a
memory allocation problem. Thus, after a possible memory allocation
failure the bc->bch.rx_skb will be NULL which will lead to a NULL
pointer dereference.

Signed-off-by: Anton Protopopov <a.s.protopopov@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>