Do not use fs.FileOwnerFromContext in fs/proc.file.UnstableAttr().
From //pkg/sentry/context/context.go: // - It is *not safe* to retain a Context passed to a function beyond the scope // of that function call. Passing a stored kernel.Task as a context.Context to fs.FileOwnerFromContext violates this requirement. PiperOrigin-RevId: 211143021 Change-Id: I4c5b02bd941407be4c9cfdbcbdfe5a26acaec037
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@ -51,7 +51,8 @@ func (f *file) UnstableAttr(ctx context.Context, inode *fs.Inode) (fs.UnstableAt
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return fs.UnstableAttr{}, err
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}
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if f.t != nil {
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uattr.Owner = fs.FileOwnerFromContext(f.t)
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creds := f.t.Credentials()
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uattr.Owner = fs.FileOwner{creds.EffectiveKUID, creds.EffectiveKGID}
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}
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return uattr, nil
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}
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