On Mon, Feb 15, 2016 at 5:29 PM, Peter Zijlstra <pet...@infradead.org> wrote: > On Thu, Jan 14, 2016 at 11:05:50AM +0100, Dmitry Vyukov wrote: >> There is a way to run it without coverage on a local machine. >> >> First, you need to setup Go toolchain: download latest Go distribution >> from https://golang.org/dl: >> https://storage.googleapis.com/golang/go1.5.3.linux-amd64.tar.gz >> Unpack it to $HOME/go1.5. >> >> $ export GOROOT=$HOME/go1.5 > >> $ export GOPATH=$HOME/gopath > > So after I put that in a profile.d file: > >> Download syzkaller sources: >> >> $ go get github.com/google/syzkaller > > package github.com/google/syzkaller: no buildable Go source files in > /root/gopath/src/github.com/google/syzkaller > >> Build necessary syzkaller binaries: >> >> $ cd $GOPATH/src/github.com/google/syzkaller >> $ make > > That seems to have done its thing > >> Then save the following content into >> $GOPATH/src/github.com/google/syzkaller/perf.cfg >> > > { > "http": "localhost:50000", > "workdir": "root/gopath/src/github.com/google/syzkaller/workdir", > "syzkaller": "/root/gopath/src/github.com/google/syzkaller", > "vmlinux": "-", > "type": "local", > "count": 1, > "procs": 160, > "nocover": true, > "nodropprivs": true, > "enable_syscalls": [ > "perf_event_open", > "ioctl$PERF*", > "prctl$void", > "bpf$*", > "sched_yield" > ] > } > >> Alter paths as necessary. Also you can change procs parameter (number >> of parallel test processes), something like NCPU*4 would be a good >> number. Also you can add additional syscalls to the mix. > > per the above > >> Then run: >> >> $ bin/syz-manager -config perf.cfg >> >> If you run it on a separate test machine, then scp syzkaller/bin dir >> and perf.cfg to the machine (the syzkaller param in config is where it >> will search for the bin dir). >> >> If syz-manager does not appear to be doing anything useful, then pleas >> run it in the following mode and post output: >> >> $ bin/syz-manager -config perf.cfg -v 1 -debug > > root@ivb-ep:~/gopath/src/github.com/google/syzkaller# bin/syz-manager -config > perf.cfg -v 1 -debug > 2016/02/15 17:12:50 bad config syzkaller param: can't find bin/syz-execprog > > And its right, no such thing as bin/syz-execprog
Please also do: $ make execprog And replace: "nocover": true, "nodropprivs": true, in config file with: "cover": false, "dropprivs": false, (that's changed since I wrote the instructions).