Go, a fast growing programming language, is often considered as “the programming language of the cloud”. The language provides a rich set of synchronization primitives, making it easy to write concurrent programs with great parallelism. However. the rich set of primitives also introduces many bugs. We build Gobench, the first benchmark suite for Go concurrency bugs. Currently, Gobench consists of 82 real bugs from 9 popular open source applications and 103 bug kernels. The bug kernels are carefully extracted and simplified from 67 out of these 82 bugs and 36 additional bugs reported in a recent study to preserve their bug-inducing complexities as much as possible. These bugs cover a variety of concurrency issues, both traditional and Go-specific. We believe Gobench will be instrumental in helping researchers understand concurrency bugs in Go and develop effective tools for their detection. We have therefore evaluated a range of representative concurrency error detection tools using Gobench. Our evaluation has revealed their limitations and provided insights for making further improvements.