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Ian Lance Taylor efd204ccf7 [release-branch.go1.15] runtime: block signals in needm before allocating M
Otherwise, if a signal occurs just after we allocated the M,
we can deadlock if the signal handler needs to allocate an M
itself.

For #42207
Fixes #42636

Change-Id: I76f44547f419e8b1c14cbf49bf602c6e645d8c14
Reviewed-on: https://go-review.googlesource.com/c/go/+/265759
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
(cherry picked from commit 368c401164)
Reviewed-on: https://go-review.googlesource.com/c/go/+/271847
2020-11-20 20:38:12 +00:00
.github .github: add link to questions in ISSUE_TEMPLATE 2020-01-06 17:05:31 +00:00
api go/printer: remove exported StdFormat flag 2020-07-17 02:15:01 +00:00
doc [release-branch.go1.15] doc/go1.14: document json.Umarshal map key support of TextUnmarshaler 2020-09-02 13:39:54 +00:00
lib/time lib/time, time/tzdata: update tz data to 2020a 2020-04-30 08:07:39 +00:00
misc [release-branch.go1.15-security] cmd/go, cmd/cgo: don't let bogus symbol set cgo_ldflag 2020-11-11 23:35:14 +00:00
src [release-branch.go1.15] runtime: block signals in needm before allocating M 2020-11-20 20:38:12 +00:00
test [release-branch.go1.15] cmd/compile: fix storeType to handle pointers to go:notinheap types 2020-10-27 23:05:53 +00:00
.gitattributes all: treat all files as binary, but check in .bat with CRLF 2020-06-08 15:31:43 +00:00
.gitignore
AUTHORS A+C: add Kush Patel (corporate CLA for Hootsuite Inc) 2020-07-08 00:10:44 +00:00
CONTRIBUTING.md
CONTRIBUTORS [release-branch.go1.15] all: merge master into release-branch.go1.15 2020-08-11 17:05:57 +00:00
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VERSION [release-branch.go1.15-security] go1.15.5 2020-11-12 16:39:58 +00:00

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