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After the `BlobSaver` job is submitted, the buffer can be released and reused by another `FileSaver` even before `BlobSaver.Save` returns. That FileSaver will the change `buf.Data` leading to wrong backup statistics. Found by `go test -race ./...`: WARNING: DATA RACE Write at 0x00c0000784a0 by goroutine 41: github.com/restic/restic/internal/archiver.(*FileSaver).saveFile() /home/michael/Projekte/restic/restic/internal/archiver/file_saver.go:176 +0x789 github.com/restic/restic/internal/archiver.(*FileSaver).worker() /home/michael/Projekte/restic/restic/internal/archiver/file_saver.go:242 +0x2af github.com/restic/restic/internal/archiver.NewFileSaver.func2() /home/michael/Projekte/restic/restic/internal/archiver/file_saver.go:88 +0x5d golang.org/x/sync/errgroup.(*Group).Go.func1() /home/michael/go/pkg/mod/golang.org/x/sync@v0.0.0-20210220032951-036812b2e83c/errgroup/errgroup.go:57 +0x91 Previous read at 0x00c0000784a0 by goroutine 29: github.com/restic/restic/internal/archiver.(*BlobSaver).Save() /home/michael/Projekte/restic/restic/internal/archiver/blob_saver.go:57 +0x1dd github.com/restic/restic/internal/archiver.(*BlobSaver).Save-fm() <autogenerated>:1 +0xac github.com/restic/restic/internal/archiver.(*FileSaver).saveFile() /home/michael/Projekte/restic/restic/internal/archiver/file_saver.go:191 +0x855 github.com/restic/restic/internal/archiver.(*FileSaver).worker() /home/michael/Projekte/restic/restic/internal/archiver/file_saver.go:242 +0x2af github.com/restic/restic/internal/archiver.NewFileSaver.func2() /home/michael/Projekte/restic/restic/internal/archiver/file_saver.go:88 +0x5d golang.org/x/sync/errgroup.(*Group).Go.func1() /home/michael/go/pkg/mod/golang.org/x/sync@v0.0.0-20210220032951-036812b2e83c/errgroup/errgroup.go:57 +0x91 |
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.. | ||
archiver_test.go | ||
archiver_unix_test.go | ||
archiver_windows_test.go | ||
archiver.go | ||
blob_saver_test.go | ||
blob_saver.go | ||
buffer.go | ||
doc.go | ||
file_saver_test.go | ||
file_saver.go | ||
scanner_test.go | ||
scanner.go | ||
testing_test.go | ||
testing.go | ||
tree_saver_test.go | ||
tree_saver.go | ||
tree_test.go | ||
tree.go |