Messages in this thread | | | From | Thomas Gleixner <> | Subject | Re: general protection fault in syscall_return_slowpath | Date | Sun, 08 Mar 2020 19:26:22 +0100 |
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Andy Lutomirski <luto@kernel.org> writes: > On Sat, Mar 7, 2020 at 11:45 PM syzbot > <syzbot+cd66e43794b178bb5cd6@syzkaller.appspotmail.com> wrote: > $ make -j4 > tools/syz-env/env.go:14:2: cannot find package > "github.com/google/syzkaller/pkg/osutil" in any of: > > I'm sure that if I actually understood Go's delightful packaging > system, I could reverse engineer your build system and figure out how > to make it work. But perhaps you could document the build process? > Or maybe make 'make' just work? > > For kicks, I tried this: > > $ mkdir -p src/github.com/google > $ ln -sr . src/github.com/google/syzkaller > $ GOPATH=`/bin/pwd` make > GOOS=linux GOARCH=amd64 go install ./syz-manager > go install: no install location for directory > /home/luto/apps/syzkaller/syz-manager outside GOPATH > > Are there instructions for just building syzkaller? I don't want to > install it, I don't want to fuzz my kernel -- I just want to run your > reproducer.
https://github.com/google/syzkaller/blob/master/docs/executing_syzkaller_programs.md
That's how I build the binaries:
mkdir foo export GOPATH=$HOME/foo
cd foo go get -u -d github.com/google/syzkaller/... cd src/github.com/google/syzkaller make cp bin/linux_amd64/syz-execprog bin/linux_amd64/syz-executor $GOPATH
Of course you can build it somewhere and scp the executables to a test box.
And then to run it
cd $GOPATH wget -O repro.syz https://syzkaller.appspot.com/x/repro.syz?x=12a42329e00000 ./syz-execprog -procs 6 -repeat 0 -collide -disable none repro.syz
The command line options are a bit tedious as you have to look them up in the comment in repro.syz.
A scripts which converts that comment into command line options or syz-execprog simply taking it from repro.syz would indeed be handy.
A kernel with the config provided in the report and running that reproducer is still not reproducing with a runtime of 8hrs+ :(
Thanks,
tglx
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