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vdpa/mlx5: Fix uninitialised variable in core/mr.c 

If the kernel is unable to allocate memory for the variable dmr then
err will be returned without being set. Set err to -ENOMEM in this
case.

Fixes: 94abbccdf2 ("vdpa/mlx5: Add shared memory registration code")
Addresses-Coverity: ("Uninitialized variables")
Signed-off-by: Alex Dewar <alex.dewar@gmx.co.uk>
Link: https://lore.kernel.org/r/20200806185625.67344-1-alex.dewar@gmx.co.uk
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Acked-by: Eli Cohen <eli@mellanox.com>
This commit is contained in:
Alex Dewar 2020-08-06 19:56:15 +01:00 committed by Michael S. Tsirkin
parent 1e3e792650
commit 05acc4beb2
1 changed files with 3 additions and 1 deletions
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4
drivers/vdpa/mlx5/core/mr.c
View File

@ -319,8 +319,10 @@ static int add_direct_chain(struct mlx5_vdpa_dev *mvdev, u64 start, u64 size, u8
while (size) {
sz = (u32)min_t(u64, MAX_KLM_SIZE, size);
dmr = kzalloc(sizeof(*dmr), GFP_KERNEL);
if (!dmr)
if (!dmr) {
err = -ENOMEM;
goto err_alloc;
}
dmr->start = st;
dmr->end = st + sz;