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| author | Michael Brown | 2017-03-22 14:18:54 +0100 |
|---|---|---|
| committer | Michael Brown | 2017-03-22 14:18:54 +0100 |
| commit | 0ced99e97c59e193eb7b1313fbb4473c720c59dc (patch) | |
| tree | 8bef2e0c1c72c3f5a272a60a6a7dcba50d0f416e /src/drivers | |
| parent | [video_subr] Use memmove() for overlapping memory copy (diff) | |
| download | ipxe-0ced99e97c59e193eb7b1313fbb4473c720c59dc.tar.gz ipxe-0ced99e97c59e193eb7b1313fbb4473c720c59dc.tar.xz ipxe-0ced99e97c59e193eb7b1313fbb4473c720c59dc.zip | |
[arbel] Assert that mapping length is non-zero
An (impossible) mapping length of zero produces a negative bit shift,
which is technically undefined.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Diffstat (limited to 'src/drivers')
| -rw-r--r-- | src/drivers/infiniband/arbel.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/drivers/infiniband/arbel.c b/src/drivers/infiniband/arbel.c index ea65d8b8..98a2b601 100644 --- a/src/drivers/infiniband/arbel.c +++ b/src/drivers/infiniband/arbel.c @@ -1972,6 +1972,7 @@ static int arbel_map_vpm ( struct arbel *arbel, assert ( ( va & ( ARBEL_PAGE_SIZE - 1 ) ) == 0 ); assert ( ( pa & ( ARBEL_PAGE_SIZE - 1 ) ) == 0 ); assert ( ( len & ( ARBEL_PAGE_SIZE - 1 ) ) == 0 ); + assert ( len != 0 ); /* Calculate starting points */ start = pa; |