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authorHyunchul Lee <hyc.lee@gmail.com>2022-04-30 08:30:28 +0900
committerSteve French <stfrench@microsoft.com>2022-05-21 15:01:38 -0500
commit4e3edd0092704b25626a0fe60a974f6f382ff93d (patch)
treeb71d0371cbf97c073874f917f4e57e538eccd564 /fs/ksmbd
parent11659a8ddbd9c4c1ab6f3b8f52837178ef121b20 (diff)
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ksmbd: smbd: change the return value of get_sg_list
Make get_sg_list return EINVAL if there aren't mapped scatterlists. Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com> Acked-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
Diffstat (limited to 'fs/ksmbd')
-rw-r--r--fs/ksmbd/transport_rdma.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/ksmbd/transport_rdma.c b/fs/ksmbd/transport_rdma.c
index 4372d631735e..696ffd2ae661 100644
--- a/fs/ksmbd/transport_rdma.c
+++ b/fs/ksmbd/transport_rdma.c
@@ -1079,7 +1079,7 @@ static int get_sg_list(void *buf, int size, struct scatterlist *sg_list, int nen
int offset, len;
int i = 0;
- if (nentries < get_buf_page_count(buf, size))
+ if (size <= 0 || nentries < get_buf_page_count(buf, size))
return -EINVAL;
offset = offset_in_page(buf);
@@ -1111,7 +1111,7 @@ static int get_mapped_sg_list(struct ib_device *device, void *buf, int size,
int npages;
npages = get_sg_list(buf, size, sg_list, nentries);
- if (npages <= 0)
+ if (npages < 0)
return -EINVAL;
return ib_dma_map_sg(device, sg_list, npages, dir);
}