korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2025-01-27 08:14:35 +08:00
Code Issues Packages Projects Releases Wiki Activity

IB/hfi1: Use QPN mask to avoid overflow

Browse Source 
Ensure we can't come up with an array size that is bigger than the array
by applying the QPN mask before the divide in the free_qpn function.

Reviewed-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Dennis Dalessandro 2017-05-29 17:19:21 -07:00 committed by Doug Ledford
parent 67838e64fa
commit 6c31e5283c
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/infiniband/sw/rdmavt/qp.c
View File

@ -645,7 +645,7 @@ static void rvt_free_qpn(struct rvt_qpn_table *qpt, u32 qpn)
{
struct rvt_qpn_map *map;
map = qpt->map + qpn / RVT_BITS_PER_PAGE;
map = qpt->map + (qpn & RVT_QPN_MASK) / RVT_BITS_PER_PAGE;
if (map->page)
clear_bit(qpn & RVT_BITS_PER_PAGE_MASK, map->page);
}