commit 8f27ce8a604014414f8dfffc25cbcde83a3f2216
author Tobias Klauser <tklauser@distanz.ch> Thu Feb 01 09:24:21 2018 +0100
committer Brad Fitzpatrick <bradfitz@golang.org> Thu Feb 01 15:31:26 2018 +0000
tree c283c78ad0b9b92e96f5c380e8cefdfc69563e1c
parent 3dbebcf8efb6a5011a60c2b4591c1022a759af8a

unix: fix cpuset size argument in sched_affinity syscall

Fixes golang/go#23639

Change-Id: I7793dc50de35791a7c8af1966bb2ee4a36a2ac1c
Reviewed-on: https://go-review.googlesource.com/91375
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

unix/affinity_linux.go

diff --git a/unix/affinity_linux.go b/unix/affinity_linux.go
index d81fbb5..72afe33 100644
--- a/unix/affinity_linux.go
+++ b/unix/affinity_linux.go
@@ -16,7 +16,7 @@
 type CPUSet [cpuSetSize]cpuMask
 
 func schedAffinity(trap uintptr, pid int, set *CPUSet) error {
-	_, _, e := RawSyscall(trap, uintptr(pid), uintptr(unsafe.Sizeof(set)), uintptr(unsafe.Pointer(set)))
+	_, _, e := RawSyscall(trap, uintptr(pid), uintptr(unsafe.Sizeof(*set)), uintptr(unsafe.Pointer(set)))
 	if e != 0 {
 		return errnoErr(e)
 	}