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ksmbd: Use struct_size() to improve smb_direct_rdma_xmit()

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Use struct_size() to calculate the number of bytes to allocate for a
new message.

Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
Thorsten Blum 2024-09-28 17:00:30 +02:00 committed by Steve French
parent 0801c1374a
commit 9c38339636
1 changed files with 2 additions and 2 deletions
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4
fs/smb/server/transport_rdma.c
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@ -1405,8 +1405,8 @@ static int smb_direct_rdma_xmit(struct smb_direct_transport *t,
/* build rdma_rw_ctx for each descriptor */
desc_buf = buf;
for (i = 0; i < desc_num; i++) {
msg = kzalloc(offsetof(struct smb_direct_rdma_rw_msg, sg_list) +
sizeof(struct scatterlist) * SG_CHUNK_SIZE, GFP_KERNEL);
msg = kzalloc(struct_size(msg, sg_list, SG_CHUNK_SIZE),
GFP_KERNEL);
if (!msg) {
ret = -ENOMEM;
goto out;