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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 | ||
backend | ||
bloblru | ||
cache | ||
checker | ||
crypto | ||
debug | ||
dump | ||
errors | ||
filter | ||
fs | ||
fuse | ||
hashing | ||
limiter | ||
migrations | ||
mock | ||
options | ||
pack | ||
repository | ||
restic | ||
restorer | ||
selfupdate | ||
test | ||
textfile | ||
ui | ||
walker |