Commit 642c7cbc authored by Bart Van Assche's avatar Bart Van Assche Committed by Doug Ledford

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: default avatarBart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: default avatarAndrew Boyer <andrew.boyer@dell.com>
Cc: Moni Shoua <monis@mellanox.com>
Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
parent 43553b47
...@@ -266,6 +266,7 @@ static u32 alloc_index(struct rxe_pool *pool) ...@@ -266,6 +266,7 @@ static u32 alloc_index(struct rxe_pool *pool)
if (index >= range) if (index >= range)
index = find_first_zero_bit(pool->table, range); index = find_first_zero_bit(pool->table, range);
WARN_ON_ONCE(index >= range);
set_bit(index, pool->table); set_bit(index, pool->table);
pool->last = index; pool->last = index;
return index + pool->min_index; return index + pool->min_index;
......
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