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| author |   Bart Van Assche <bart.vanassche@sandisk.com> | 2017-01-10 11:15:48 -0800 |
|---|---|---|
| committer |   Doug Ledford <dledford@redhat.com> | 2017-01-10 16:52:47 -0500 |
| commit | 642c7cbcaf2ffc1e27f67eda3dc47347ac5aff37 (patch) | |
| tree | ba51621bc1e85f16c12cb0ce65f68dbb72293680 /drivers/infiniband/sw/rxe/rxe_pool.c | |
| parent | IB/rxe: Issue warnings once (diff) | |
| download | linux-dev-642c7cbcaf2ffc1e27f67eda3dc47347ac5aff37.tar.xz linux-dev-642c7cbcaf2ffc1e27f67eda3dc47347ac5aff37.zip | |
IB/rxe: Add a runtime check in alloc_index()
Since index values equal to or above 'range' can trigger memory
corruption, complain if index >= range.
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: Andrew Boyer <andrew.boyer@dell.com>
Cc: Moni Shoua <monis@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/sw/rxe/rxe_pool.c')
| -rw-r--r-- | drivers/infiniband/sw/rxe/rxe_pool.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/infiniband/sw/rxe/rxe_pool.c b/drivers/infiniband/sw/rxe/rxe_pool.c index 7d1e2862b928..75d11ee635ec 100644 --- a/drivers/infiniband/sw/rxe/rxe_pool.c +++ b/drivers/infiniband/sw/rxe/rxe_pool.c @@ -266,6 +266,7 @@ static u32 alloc_index(struct rxe_pool *pool) if (index >= range) index = find_first_zero_bit(pool->table, range); + WARN_ON_ONCE(index >= range); set_bit(index, pool->table); pool->last = index; return index + pool->min_index; |