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| author | Michael Brown | 2017-03-22 14:18:54 +0100 |
|---|---|---|
| committer | Michael Brown | 2017-03-22 14:20:14 +0100 |
| commit | dea5b744750f691c071b018b1084fa916ed630a8 (patch) | |
| tree | 49ed4059365e69d6956f429c83c84a2c033f8886 /src/drivers/infiniband | |
| parent | [arbel] Assert that mapping length is non-zero (diff) | |
| download | ipxe-dea5b744750f691c071b018b1084fa916ed630a8.tar.gz ipxe-dea5b744750f691c071b018b1084fa916ed630a8.tar.xz ipxe-dea5b744750f691c071b018b1084fa916ed630a8.zip | |
[hermon] 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/infiniband')
| -rw-r--r-- | src/drivers/infiniband/hermon.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/drivers/infiniband/hermon.c b/src/drivers/infiniband/hermon.c index 3797d96e..a1d2a3bd 100644 --- a/src/drivers/infiniband/hermon.c +++ b/src/drivers/infiniband/hermon.c @@ -2113,6 +2113,7 @@ static int hermon_map_vpm ( struct hermon *hermon, assert ( ( va & ( HERMON_PAGE_SIZE - 1 ) ) == 0 ); assert ( ( pa & ( HERMON_PAGE_SIZE - 1 ) ) == 0 ); assert ( ( len & ( HERMON_PAGE_SIZE - 1 ) ) == 0 ); + assert ( len != 0 ); /* Calculate starting points */ start = pa; |