linux-hardened/drivers/infiniband/hw
Michael S. Tsirkin 46707e96b7 IB/mthca: Fix off-by-one in FMR handling on memfree
mthca_table_find() will return the wrong address when the table entry
being searched for is exactly at the beginning of a sglist entry
(other than the first), because it uses >= when it should use >.

Example: assume we have 2 entries in scatterlist, 4K each, offset is
4K.  The current code will return first entry + 4K when we really want
the second entry.

In particular this means mapping an FMR on a memfree HCA may end up
writing the page table into the wrong place, leading to memory
corruption and also causing the HCA to use an incorrect address
translation table.

Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-01-04 19:46:32 -08:00
..
amso1100 RDMA/amso1100: Fix memory leak in c2_qp_modify() 2006-12-12 11:50:20 -08:00
ehca [PATCH] slab: remove SLAB_KERNEL 2006-12-07 08:39:24 -08:00
ipath IB/ipath: Implement new verbs DMA mapping functions 2006-12-12 14:28:28 -08:00
mthca IB/mthca: Fix off-by-one in FMR handling on memfree 2007-01-04 19:46:32 -08:00