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| author |   Doug Ledford <dledford@redhat.com> | 2018-09-21 11:30:13 -0400 |
|---|---|---|
| committer |   Jason Gunthorpe <jgg@mellanox.com> | 2018-09-25 15:19:06 -0600 |
| commit | c6ce580716372d71cd119bacf73f14a62e9af2ea (patch) | |
| tree | cfec93bc6ebd1580a7498589c05db2d516078b19 /drivers/infiniband/hw/mlx4 | |
| parent | RDMA/umem: Minor optimizations (diff) | |
| download | linux-dev-c6ce580716372d71cd119bacf73f14a62e9af2ea.tar.xz linux-dev-c6ce580716372d71cd119bacf73f14a62e9af2ea.zip | |
RDMA/umem: Fix potential addition overflow
Given a large enough memory allocation, it is possible to wrap the
pinned_vm counter. Check for addition overflow to prevent such
eventualities.
Fixes: 40ddacf2dda9 ("RDMA/umem: Don't hold mmap_sem for too long")
Reported-by: Jason Gunthorpe <jgg@ziepe.ca>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'drivers/infiniband/hw/mlx4')
0 files changed, 0 insertions, 0 deletions