qed: Fix potential use-after-free in qed_spq_post()
authorRoland Dreier <roland@purestorage.com>
Mon, 15 Jan 2018 20:24:49 +0000 (12:24 -0800)
committerDavid S. Miller <davem@davemloft.net>
Tue, 16 Jan 2018 19:57:34 +0000 (14:57 -0500)
commit70eeff66c4696cee4076d6388b6bede5bd7ff71c
tree3e68c546ff184fea0b1b87a4af743720f3c9b34b
parent0d9c9f0f40ca262b67fc06a702b85f3976f5e1a1
qed: Fix potential use-after-free in qed_spq_post()

We need to check if p_ent->comp_mode is QED_SPQ_MODE_EBLOCK before
calling qed_spq_add_entry().  The test is fine is the mode is EBLOCK,
but if it isn't then qed_spq_add_entry() might kfree(p_ent).

Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/qlogic/qed/qed_spq.c