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| author | Michael Marineau <mike@marineau.org> | 2017-01-03 00:15:05 -0800 |
|---|---|---|
| committer | Ian Lance Taylor <iant@golang.org> | 2017-01-03 22:35:42 +0000 |
| commit | 6a1cac27005f5e37c9c4acd0f63121e61b41ae3c (patch) | |
| tree | 24988cbb76f33855b5c1678487245173bfaad99a | |
| parent | d698e614a21cd50055c7c5e7100069d2bcdb9b83 (diff) | |
| download | go-6a1cac27005f5e37c9c4acd0f63121e61b41ae3c.tar.gz go-6a1cac27005f5e37c9c4acd0f63121e61b41ae3c.zip | |
runtime: check sched_getaffinity return value
Android on ChromeOS uses a restrictive seccomp filter that blocks
sched_getaffinity, leading this code to index a slice by -errno.
Change-Id: Iec09a4f79dfbc17884e24f39bcfdad305de75b37
Reviewed-on: https://go-review.googlesource.com/34794
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
| -rw-r--r-- | src/runtime/os_linux.go | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/runtime/os_linux.go b/src/runtime/os_linux.go index 213b951a6b..a6efc0e3d1 100644 --- a/src/runtime/os_linux.go +++ b/src/runtime/os_linux.go @@ -91,6 +91,9 @@ func getproccount() int32 { const maxCPUs = 64 * 1024 var buf [maxCPUs / (sys.PtrSize * 8)]uintptr r := sched_getaffinity(0, unsafe.Sizeof(buf), &buf[0]) + if r < 0 { + return 1 + } n := int32(0) for _, v := range buf[:r/sys.PtrSize] { for v != 0 { |