Revert "vendor: update go.etcd.io/bbolt v1.3.4"

This reverts commit fb9e3d9f21.

Fixes: #4154

Signed-off-by: Maksym Pavlenko <makpav@amazon.com>

vendor/go.etcd.io/bbolt/tx.go

@@ -4,7 +4,6 @@ import (
 	"fmt"
 	"io"
 	"os"
-	"reflect"
 	"sort"
 	"strings"
 	"time"
@@ -528,7 +527,7 @@ func (tx *Tx) write() error {
 		offset := int64(p.id) * int64(tx.db.pageSize)
 
 		// Write out page in "max allocation" sized chunks.
-		ptr := uintptr(unsafe.Pointer(p))
+		ptr := (*[maxAllocSize]byte)(unsafe.Pointer(p))
 		for {
 			// Limit our write to our max allocation size.
 			sz := size
@@ -537,11 +536,7 @@ func (tx *Tx) write() error {
 			}
 
 			// Write chunk to disk.
-			buf := *(*[]byte)(unsafe.Pointer(&reflect.SliceHeader{
-				Data: ptr,
-				Len:  sz,
-				Cap:  sz,
-			}))
+			buf := ptr[:sz]
 			if _, err := tx.db.ops.writeAt(buf, offset); err != nil {
 				return err
 			}
@@ -557,7 +552,7 @@ func (tx *Tx) write() error {
 
 			// Otherwise move offset forward and move pointer to next chunk.
 			offset += int64(sz)
-			ptr += uintptr(sz)
+			ptr = (*[maxAllocSize]byte)(unsafe.Pointer(&ptr[sz]))
 		}
 	}
 
@@ -576,11 +571,7 @@ func (tx *Tx) write() error {
 			continue
 		}
 
-		buf := *(*[]byte)(unsafe.Pointer(&reflect.SliceHeader{
-			Data: uintptr(unsafe.Pointer(p)),
-			Len:  tx.db.pageSize,
-			Cap:  tx.db.pageSize,
-		}))
+		buf := (*[maxAllocSize]byte)(unsafe.Pointer(p))[:tx.db.pageSize]
 
 		// See https://go.googlesource.com/go/+/f03c9202c43e0abb130669852082117ca50aa9b1
 		for i := range buf {