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Austin Clements e5186895fc runtime: restore RSB for sigpanic call on mips64x 
preparePanic must set all registers expected by Go runtime conventions
in case the sigpanic is being injected into C code. However, on
mips64x it fails to restore RSB (R28). As a result, if C code modifies
RSB and then raises a signal that turns into a sigpanic call, sigpanic
may crash when it attempts to lock runtime.debuglock (the first global
it references).

Fix this by restoring RSB in the signal context using the same
convention as main and sigtramp.

Fixes #23641.

Change-Id: Ib47e83df89e2a3eece10f480e4e91ce9e4424388
Reviewed-on: https://go-review.googlesource.com/91156
Run-TryBot: Austin Clements <austin@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2018-01-31 20:57:53 +00:00
.github doc: add a link to the code of conduct 2017-11-13 16:48:04 +00:00
api doc, api: add type Srcset string change to go1.10 notes and API 2018-01-11 17:44:08 +00:00
doc doc: add GOMIPS to source installation docs 2018-01-30 19:54:01 +00:00
lib/time lib/time: follow redirects in curl 2018-01-24 04:39:28 +00:00
misc misc,src: add support for specifying adb flags to the android harness 2018-01-20 21:13:30 +00:00
src runtime: restore RSB for sigpanic call on mips64x 2018-01-31 20:57:53 +00:00
test test: add test for gccgo bug 23545 2018-01-31 20:03:31 +00:00
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.gitignore .gitignore: ignore src/cmd/dist/dist 2017-10-28 21:55:49 +00:00
AUTHORS A+C: update late Go 1.10 contributors 2018-01-06 04:52:00 +00:00
CONTRIBUTING.md .github: recommend 'go bug' when filing an issue 2017-07-24 17:18:34 +00:00
CONTRIBUTORS A+C: update late Go 1.10 contributors 2018-01-06 04:52:00 +00:00
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README.md

The Go Programming Language

Go is an open source programming language that makes it easy to build simple, reliable, and efficient software.

Gopher image Gopher image by Renee French, licensed under Creative Commons 3.0 Attributions license.

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Unless otherwise noted, the Go source files are distributed under the BSD-style license found in the LICENSE file.

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Note that the Go project does not use GitHub pull requests, and that we use the issue tracker for bug reports and proposals only. See https://golang.org/wiki/Questions for a list of places to ask questions about the Go language.