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syz-fuzzer: use proper pointer size when checking coverage

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This commit is contained in:
Dmitry Vyukov 2018-04-27 14:16:47 +02:00
parent 476b8ca987
commit ebfe5a54b7
1 changed files with 2 additions and 1 deletions
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3
syz-fuzzer/fuzzer_linux.go
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@ -8,6 +8,7 @@ import (
"os"
"syscall"
"time"
"unsafe"
"github.com/google/syzkaller/pkg/log"
"github.com/google/syzkaller/sys/linux"
@ -153,7 +154,7 @@ func checkCompsSupported() (kcov, comps bool) {
log.Logf(1, "KCOV_CHECK: KCOV_INIT_TRACE = %v", errno)
return
}
_, err = syscall.Mmap(fd, 0, int(coverSize*8),
_, err = syscall.Mmap(fd, 0, int(coverSize*unsafe.Sizeof(uintptr(0))),
syscall.PROT_READ|syscall.PROT_WRITE, syscall.MAP_SHARED)
if err != nil {
log.Logf(1, "KCOV_CHECK: mmap = %v", err)