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NFS: Do not memcpy from NULL when encoding an empty opaque #112

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vitalif merged 1 commits from koolkhel/vitastor:ubsan-xdr-empty-opaque into master 2026-10-28 00:10:44 +03:00
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1 changed files with 2 additions and 1 deletions
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src/nfs/proto/xdr_impl_inline.h
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@@ -159,7 +159,8 @@ inline int xdr_bytes(XDR *xdrs, xdr_string_t *data, uint32_t maxlen, bool rdma_c
unsigned old = xdrs->cur_out.size();
xdrs->cur_out.resize(old + 4+data->size);
*(uint32_t*)(xdrs->cur_out.data() + old) = htobe32(data->size);
memcpy(xdrs->cur_out.data()+old+4, data->data, data->size);
if (data->size)
memcpy(xdrs->cur_out.data()+old+4, data->data, data->size);
}
else
{