[release-branch.go1.25] runtime: don't negate eventfd errno

The Linux syscall package does this for us.

For #75337.
Fixes #77413.

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>
(cherry picked from commit d3be949ada01d7827f8edc87665fef5268634cb3)
Reviewed-on: https://go-review.googlesource.com/c/go/+/741223
Reviewed-by: Michael Pratt <mpratt@google.com>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Florian Lehner <lehner.florian86@gmail.com>

diff --git a/src/runtime/netpoll_epoll.go b/src/runtime/netpoll_epoll.go
index c43bab08821559c48a66b7ca35fc22fcf2b0c6a2..8cc992e1327cee7dffff9a8324cf28a306201a42 100644 (file)
--- a/src/runtime/netpoll_epoll.go
+++ b/src/runtime/netpoll_epoll.go
@@ -27,7 +27,7 @@ func netpollinit() {
        }
        efd, errno := syscall.Eventfd(0, syscall.EFD_CLOEXEC|syscall.EFD_NONBLOCK)
        if errno != 0 {
-               println("runtime: eventfd failed with", -errno)
+               println("runtime: eventfd failed with", errno)
                throw("runtime: eventfd failed")
        }
        ev := syscall.EpollEvent{