RDS: fix congestion map corruption for PAGE_SIZE > 4k
authorshamir rabinovitch <shamir.rabinovitch@oracle.com>
Thu, 7 Apr 2016 11:57:36 +0000 (07:57 -0400)
committerDavid S. Miller <davem@davemloft.net>
Thu, 7 Apr 2016 20:58:28 +0000 (16:58 -0400)
commit579ba855524c49d30929871b63c1f7637ffab4b6
treefbae7fb56f3e62fa189fc3a5cbc835c558fe4589
parente98499ac63977c75331b198a18979944a532c9f2
RDS: fix congestion map corruption for PAGE_SIZE > 4k

When PAGE_SIZE > 4k single page can contain 2 RDS fragments. If
'rds_ib_cong_recv' ignore the RDS fragment offset in to the page it
then read the data fragment as far congestion map update and lead to
corruption of the RDS connection far congestion map.

Signed-off-by: Shamir Rabinovitch <shamir.rabinovitch@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/rds/ib_recv.c