diff --git a/app/vmselect/netstorage/netstorage.go b/app/vmselect/netstorage/netstorage.go
index ba520f6e1..b00318a27 100644
--- a/app/vmselect/netstorage/netstorage.go
+++ b/app/vmselect/netstorage/netstorage.go
@@ -2537,7 +2537,7 @@ func sendAccountIDProjectID(bc *handshake.BufferedConn, accountID, projectID uin
 }
 
 func readBytes(buf []byte, bc *handshake.BufferedConn, maxDataSize int) ([]byte, error) {
-	buf = bytesutil.ResizeNoCopy(buf, 8)
+	buf = bytesutil.ResizeNoCopyMayOverallocate(buf, 8)
 	if n, err := io.ReadFull(bc, buf); err != nil {
 		return buf, fmt.Errorf("cannot read %d bytes with data size: %w; read only %d bytes", len(buf), err, n)
 	}
@@ -2545,7 +2545,7 @@ func readBytes(buf []byte, bc *handshake.BufferedConn, maxDataSize int) ([]byte,
 	if dataSize > uint64(maxDataSize) {
 		return buf, fmt.Errorf("too big data size: %d; it mustn't exceed %d bytes", dataSize, maxDataSize)
 	}
-	buf = bytesutil.ResizeNoCopy(buf, int(dataSize))
+	buf = bytesutil.ResizeNoCopyMayOverallocate(buf, int(dataSize))
 	if dataSize == 0 {
 		return buf, nil
 	}
diff --git a/app/vmstorage/transport/server.go b/app/vmstorage/transport/server.go
index ce779bf7c..a47f20cf3 100644
--- a/app/vmstorage/transport/server.go
+++ b/app/vmstorage/transport/server.go
@@ -321,7 +321,7 @@ func (ctx *vmselectRequestCtx) readTimeRange() (storage.TimeRange, error) {
 }
 
 func (ctx *vmselectRequestCtx) readUint32() (uint32, error) {
-	ctx.sizeBuf = bytesutil.ResizeNoCopy(ctx.sizeBuf, 4)
+	ctx.sizeBuf = bytesutil.ResizeNoCopyMayOverallocate(ctx.sizeBuf, 4)
 	if _, err := io.ReadFull(ctx.bc, ctx.sizeBuf); err != nil {
 		if err == io.EOF {
 			return 0, err
@@ -333,7 +333,7 @@ func (ctx *vmselectRequestCtx) readUint32() (uint32, error) {
 }
 
 func (ctx *vmselectRequestCtx) readUint64() (uint64, error) {
-	ctx.sizeBuf = bytesutil.ResizeNoCopy(ctx.sizeBuf, 8)
+	ctx.sizeBuf = bytesutil.ResizeNoCopyMayOverallocate(ctx.sizeBuf, 8)
 	if _, err := io.ReadFull(ctx.bc, ctx.sizeBuf); err != nil {
 		if err == io.EOF {
 			return 0, err
@@ -371,7 +371,7 @@ func (ctx *vmselectRequestCtx) readSearchQuery() error {
 }
 
 func (ctx *vmselectRequestCtx) readDataBufBytes(maxDataSize int) error {
-	ctx.sizeBuf = bytesutil.ResizeNoCopy(ctx.sizeBuf, 8)
+	ctx.sizeBuf = bytesutil.ResizeNoCopyMayOverallocate(ctx.sizeBuf, 8)
 	if _, err := io.ReadFull(ctx.bc, ctx.sizeBuf); err != nil {
 		if err == io.EOF {
 			return err
@@ -382,7 +382,7 @@ func (ctx *vmselectRequestCtx) readDataBufBytes(maxDataSize int) error {
 	if dataSize > uint64(maxDataSize) {
 		return fmt.Errorf("too big data size: %d; it mustn't exceed %d bytes", dataSize, maxDataSize)
 	}
-	ctx.dataBuf = bytesutil.ResizeNoCopy(ctx.dataBuf, int(dataSize))
+	ctx.dataBuf = bytesutil.ResizeNoCopyMayOverallocate(ctx.dataBuf, int(dataSize))
 	if dataSize == 0 {
 		return nil
 	}
@@ -393,7 +393,7 @@ func (ctx *vmselectRequestCtx) readDataBufBytes(maxDataSize int) error {
 }
 
 func (ctx *vmselectRequestCtx) readBool() (bool, error) {
-	ctx.dataBuf = bytesutil.ResizeNoCopy(ctx.dataBuf, 1)
+	ctx.dataBuf = bytesutil.ResizeNoCopyMayOverallocate(ctx.dataBuf, 1)
 	if _, err := io.ReadFull(ctx.bc, ctx.dataBuf); err != nil {
 		if err == io.EOF {
 			return false, err
@@ -405,7 +405,7 @@ func (ctx *vmselectRequestCtx) readBool() (bool, error) {
 }
 
 func (ctx *vmselectRequestCtx) readByte() (byte, error) {
-	ctx.dataBuf = bytesutil.ResizeNoCopy(ctx.dataBuf, 1)
+	ctx.dataBuf = bytesutil.ResizeNoCopyMayOverallocate(ctx.dataBuf, 1)
 	if _, err := io.ReadFull(ctx.bc, ctx.dataBuf); err != nil {
 		if err == io.EOF {
 			return 0, err
diff --git a/lib/protoparser/clusternative/streamparser.go b/lib/protoparser/clusternative/streamparser.go
index 613214ed2..623172cd9 100644
--- a/lib/protoparser/clusternative/streamparser.go
+++ b/lib/protoparser/clusternative/streamparser.go
@@ -65,7 +65,7 @@ func ParseStream(bc *handshake.BufferedConn, callback func(rows []storage.Metric
 func readBlock(dst []byte, bc *handshake.BufferedConn, isReadOnly func() bool) ([]byte, error) {
 	sizeBuf := auxBufPool.Get()
 	defer auxBufPool.Put(sizeBuf)
-	sizeBuf.B = bytesutil.ResizeNoCopy(sizeBuf.B, 8)
+	sizeBuf.B = bytesutil.ResizeNoCopyMayOverallocate(sizeBuf.B, 8)
 	if _, err := io.ReadFull(bc, sizeBuf.B); err != nil {
 		if err != io.EOF {
 			readErrors.Inc()
@@ -79,7 +79,7 @@ func readBlock(dst []byte, bc *handshake.BufferedConn, isReadOnly func() bool) (
 		return dst, fmt.Errorf("too big packet size: %d; shouldn't exceed %d", packetSize, consts.MaxInsertPacketSize)
 	}
 	dstLen := len(dst)
-	dst = bytesutil.ResizeWithCopy(dst, dstLen+int(packetSize))
+	dst = bytesutil.ResizeWithCopyMayOverallocate(dst, dstLen+int(packetSize))
 	if n, err := io.ReadFull(bc, dst[dstLen:]); err != nil {
 		readErrors.Inc()
 		return dst, fmt.Errorf("cannot read packet with size %d bytes: %w; read only %d bytes", packetSize, err, n)
diff --git a/lib/storage/metric_name.go b/lib/storage/metric_name.go
index 5b60035fe..5016561e9 100644
--- a/lib/storage/metric_name.go
+++ b/lib/storage/metric_name.go
@@ -438,7 +438,7 @@ func (mn *MetricName) MarshalNoAccountIDProjectID(dst []byte) []byte {
 		tag := &mn.Tags[i]
 		requiredSize += len(tag.Key) + len(tag.Value) + 2
 	}
-	dst = bytesutil.ResizeWithCopy(dst, requiredSize)[:dstLen]
+	dst = bytesutil.ResizeWithCopyMayOverallocate(dst, requiredSize)[:dstLen]
 
 	dst = marshalTagValue(dst, mn.MetricGroup)
 	tags := mn.Tags