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| | Backport from upstream: https://github/golang/go/commit/2673f9ed
Original header:
From 2673f9ed23348c634f6331ee589d489e4d9c7a9b Mon Sep 17 00:00:00 2001
From: Austin Clements <austin@google.com>
Date: Wed, 12 Jul 2017 10:12:50 -0600
Subject: [PATCH] runtime: pass CLONE_SYSVSEM to clone
SysV semaphore undo lists should be shared by threads, just like
several other resources listed in cloneFlags. Currently we don't do
this, but it probably doesn't affect anything because 1) probably
nobody uses SysV semaphores from Go and 2) Go-created threads never
exit until the process does. Beyond being the right thing to do,
user-level QEMU requires this flag because it depends on glibc to
create new threads and glibc uses this flag.
Fixes #20763.
---
src/runtime/os_linux.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/src/runtime/os_linux.c b/src/runtime/os_linux.c
index 0d8ffc9..573be7c 100644
--- a/src/runtime/os_linux.c
+++ b/src/runtime/os_linux.c
@@ -150,6 +150,7 @@ runtime·newosproc(M *mp, void *stk)
| CLONE_FS /* share cwd, etc */
| CLONE_FILES /* share fd table */
| CLONE_SIGHAND /* share sig handler table */
+ | CLONE_SYSVSEM /* share SysV semaphore undo lists (see issue #20763) */
| CLONE_THREAD /* revisit - okay for now */
;
--
2.31.1
|