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Refuse to run on Ubuntu Linux 4.4.0-* #3

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Refuse to run on Ubuntu Linux 4.4.0-* #3

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8 changes: 6 additions & 2 deletions main.go
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,7 @@ package main
import (
"encoding/binary"
"encoding/json"
"errors"
"flag"
"fmt"
"os"
Expand Down Expand Up @@ -50,11 +51,14 @@ func main() {
flScripts := flag.String("s", "", "scripts output `dir`")
flRm := flag.Bool("rm", false, "clean up scripts output dir")
flSeccomp := flag.Bool("seccomp", true, "trace with seccomp (if kernel >= 3.5)")
flKernel := flag.String("kernel", kernelRelease(), "kernel release (for seccomp)")
flKernel := flag.String("kernel", kernelRelease(), "kernel release")
flag.Parse()
e.Output = os.Stderr
withSeccomp = *flSeccomp && vercmp.CompareString(*flKernel, "3.5") >= 0
oldSeccomp = vercmp.CompareString(*flKernel, "4.8") < 0
if strings.HasPrefix(*flKernel, "4.4.0-") {
e.Exit(errors.New("Ubuntu Linux 4.4.0-* kernels have broken ptrace (please upgrade the kernel; use -kernel flag to override)"))
}

args := flag.Args()
runtime.LockOSThread()
Expand Down Expand Up @@ -234,7 +238,7 @@ func mainLoop(sys *SysState, mainPID int, onExec func(*ProcState), onExit func(*
fmt.Println(oldpid, "_exec", pid)
case unix.PTRACE_EVENT_SECCOMP:
if pstate.SysEnter {
panic("seccomp trace event during syscall")
panic("seccomp trace event during syscall (use -seccomp=false to disable)")
}
if oldSeccomp {
resume(pid, 0, true)
Expand Down