On Tue, Apr 05, 2016 at 11:44:13AM +0200, Dmitry Vyukov wrote: > On Tue, Apr 5, 2016 at 11:41 AM, Peter Zijlstra <[email protected]> wrote: > > On Mon, Apr 04, 2016 at 11:50:07AM +0200, Dmitry Vyukov wrote: > >> Yes, I am able to reproduce it by running: > >> > >> # ./syz-execprog -cover=0 -repeat=0 -procs=20 -nobody=0 > >> crash-qemu-26-1459761514194788294 > >> > >> crash-qemu-26-1459761514194788294 being: > >> https://gist.githubusercontent.com/dvyukov/bce719c2b7dede54f96d8bbb7c78714f/raw/08a7a237986f0e3bccc7c0e800a3bdaa32e1fc0b/gistfile1.txt > > > > > > root@ivb-ep:~/gopath/src/github.com/google/syzkaller# ./bin/syz-execprog > > -cover=0 -repeat=0 -procs=20 -nobody=0 gistfile1.txt > > 2016/04/05 11:39:37 parsed 391 programs > > 2016/04/05 11:39:37 executed 0 programs > > result: failed=false hanged=false err=failed to start executor binary: > > fork/exec /root/gopath/src/github.com/google/syzkaller: permission denied > > > > result: failed=false hanged=false err=failed to start executor binary: > > fork/exec /root/gopath/src/github.com/google/syzkaller: permission denied > > > > result: failed=false hanged=false err=failed to start executor binary: > > fork/exec /root/gopath/src/github.com/google/syzkaller: permission denied > > > > (which goes on ad inf.) > > > > Clearly I'm not doing it right.. help? > > The latest version of syz-execproc uses ./syz-executor by default. If > you don't have ./syz-executor, add -executor=/path/to/syz-executor.
I still have the version you helped make work; I saw that the config file format had changed since so I've not updated because I didn't want borkage. In any case, that did indeed work. But it doesn't trigger the collision for me :/ I'm running a fairly bloated (distro derived) .config with various debug options (including lockdep and lockdep_debug) enabled. Should I maybe do a 'normal' fuzz run to see if that will trigger it? I need a config for that though, as I only have the perf specific one. Also, how likely is running this thing as root on bare metal going to wreck things?
