| commit | 73d20f8186a091c8d7e81b621136770981cf8e44 | [log] [tgz] |
|---|---|---|
| author | Cherry Zhang <cherryyz@google.com> | Sat Nov 16 17:08:11 2019 -0500 |
| committer | Cherry Zhang <cherryyz@google.com> | Mon Nov 18 18:18:46 2019 +0000 |
| tree | 0ff2c82fbabb9d4c15659ade016f7f1dbbbf55e9 | |
| parent | f9dd99cae3b08e2fea303b88ff6ffae6261f65b5 [diff] |
runtime: always use Go signal stack in non-cgo program When initializing an M, we set up its signal stack to the gsignal stack if an alternate signal stack is not already set. On Android, an alternate signal stack is always set, even cgo is not used. This breaks the logic of saving/fetching G on the signal stack during VDSO, which assumes the signal stack is allocated by Go if cgo is not used (if cgo is used, we use TLS for saving G). When cgo is not used, we can always use the Go signal stack, even if an alternate signal stack is already set. Since cgo is not used, no one other than the Go runtime will care. Fixes #35554. Change-Id: Ia9d84cd55cb35097f3df46f37996589c86f10e0f Reviewed-on: https://go-review.googlesource.com/c/go/+/207445 Run-TryBot: Cherry Zhang <cherryyz@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
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