runtime: don't negate eventfd errno

prattmic · gopherbot · commit d3be949ada01 · 2025-09-09T14:05:36.000-07:00
The Linux syscall package does this for us. Fixes golang#75337. Change-Id: I6a6a636c9bb5fe25fdc6f80dc8b538ebed60d00b Reviewed-on: https://go-review.googlesource.com/c/go/+/701796 Reviewed-by: Michael Knyszek <mknyszek@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Auto-Submit: Michael Pratt <mpratt@google.com>
diff --git a/src/runtime/netpoll_epoll.go b/src/runtime/netpoll_epoll.go
@@ -27,7 +27,7 @@ func netpollinit() {
 	}
 	efd, errno := linux.Eventfd(0, linux.EFD_CLOEXEC|linux.EFD_NONBLOCK)
 	if errno != 0 {
-		println("runtime: eventfd failed with", -errno)
+		println("runtime: eventfd failed with", errno)
 		throw("runtime: eventfd failed")
 	}
 	ev := linux.EpollEvent{

Original file line number	Diff line number	Diff line change
`@@ -27,7 +27,7 @@ func netpollinit() {`
`27`	`27`	`}`
`28`	`28`	`efd, errno := linux.Eventfd(0, linux.EFD_CLOEXEC\|linux.EFD_NONBLOCK)`
`29`	`29`	`if errno != 0 {`
`30`		`- println("runtime: eventfd failed with", -errno)`
	`30`	`+ println("runtime: eventfd failed with", errno)`
`31`	`31`	`throw("runtime: eventfd failed")`
`32`	`32`	`}`
`33`	`33`	`ev := linux.EpollEvent{`