| commit | 8174f7fb2b64c221f7f80c9f7fd4d7eb317ac8bb | [log] [tgz] |
|---|---|---|
| author | Austin Clements <austin@google.com> | Mon Dec 02 17:36:25 2019 -0500 |
| committer | Austin Clements <austin@google.com> | Thu Dec 05 01:48:14 2019 +0000 |
| tree | 14e617cf022bfc197221468d24c1a66bed6c193c | |
| parent | fa3a121a79f85a4c957f29372b5ebfde7211a980 [diff] |
runtime: mlock top of signal stack on Linux 5.2–5.4.1 Linux 5.2 introduced a bug that can corrupt vector registers on return from a signal if the signal stack isn't faulted in: https://bugzilla.kernel.org/show_bug.cgi?id=205663 This CL works around this by mlocking the top page of all Go signal stacks on the affected kernels. Fixes #35326, #35777 Change-Id: I77c80a2baa4780827633f92f464486caa222295d Reviewed-on: https://go-review.googlesource.com/c/go/+/209899 Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: David Chase <drchase@google.com>
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