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authorMark Bloch <markb@mellanox.com>2016-10-27 16:36:31 +0300
committerDoug Ledford <dledford@redhat.com>2016-11-16 20:03:44 -0500
commit3c7ba5760ab8eedec01159b267bb9bfcffe522ac (patch)
tree36e6c1ab64e36f899718b69ce3b6b989c2c13bf1 /drivers
parent61c3702863be9e9f1ef12ed5a5b17bae6cdfac0b (diff)
IB/core: Avoid unsigned int overflow in sg_alloc_table
sg_alloc_table gets unsigned int as parameter while the driver returns it as size_t. Check npages isn't greater than maximum unsigned int. Fixes: eeb8461e36c9 ("IB: Refactor umem to use linear SG table") Signed-off-by: Mark Bloch <markb@mellanox.com> Signed-off-by: Maor Gottlieb <maorg@mellanox.com> Signed-off-by: Leon Romanovsky <leon@kernel.org> Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/infiniband/core/umem.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/infiniband/core/umem.c b/drivers/infiniband/core/umem.c
index 224ad274ea0b..84b4eff90395 100644
--- a/drivers/infiniband/core/umem.c
+++ b/drivers/infiniband/core/umem.c
@@ -175,7 +175,7 @@ struct ib_umem *ib_umem_get(struct ib_ucontext *context, unsigned long addr,
cur_base = addr & PAGE_MASK;
- if (npages == 0) {
+ if (npages == 0 || npages > UINT_MAX) {
ret = -EINVAL;
goto out;
}