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ksmbd: smbd: change the return value of get_sg_list

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[ Upstream commit 4e3edd0092 ]

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Hyunchul Lee
2023-12-19 00:32:56 +09:00
committed by Greg Kroah-Hartman
parent 30bd0df6e6
commit 673c186f81
1 changed files with 2 additions and 2 deletions
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4
fs/ksmbd/transport_rdma.c
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@@ -1085,7 +1085,7 @@ 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);
@@ -1117,7 +1117,7 @@ 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);
}