Hi Aleksandr, Thanks for your kind reply! On Wed, Feb 16, 2022 at 1:38 AM Aleksandr Nogikh <nogikh@xxxxxxxxxx> wrote: > > Hi Song, > > Is syzkaller not doing something you expect it to do with this config? I fixed sshkey in the config, and added a suppression for hsr_node_get_first. However, I haven't got a repro overnight. > > On Wed, Feb 16, 2022 at 2:38 AM Song Liu <song@xxxxxxxxxx> wrote: > > > > On Mon, Feb 14, 2022 at 10:41 PM Song Liu <song@xxxxxxxxxx> wrote: > > > > > > On Mon, Feb 14, 2022 at 3:52 PM Daniel Borkmann <daniel@xxxxxxxxxxxxx> wrote: > > > > > > > > Song, ptal. > > > > > > > > On 2/14/22 7:45 PM, syzbot wrote: > > > > > Hello, > > > > > > > > > > syzbot found the following issue on: > > > > > > > > > > HEAD commit: e5313968c41b Merge branch 'Split bpf_sk_lookup remote_port.. > > > > > git tree: bpf-next > > > > > console output: https://syzkaller.appspot.com/x/log.txt?x=10baced8700000 > > > > > kernel config: https://syzkaller.appspot.com/x/.config?x=c40b67275bfe2a58 > > > > > dashboard link: https://syzkaller.appspot.com/bug?extid=2f649ec6d2eea1495a8f > > > > How do I run the exact same syzkaller? I am doing something like > > > > ./bin/syz-manager -config qemu.cfg > > > > with the cfg file like: > > > > { > > "target": "linux/amd64", > > "http": ":56741", > > "workdir": "workdir", > > "kernel_obj": "linux", > > "image": "./pkg/mgrconfig/testdata/stretch.img", > > This image location looks suspicious - we store some dummy data for > tests in that folder. > Instances now run on buildroot-based images, generated with > https://github.com/google/syzkaller/blob/master/tools/create-buildroot-image.sh Thanks for the information. I will give it a try. > > > "syzkaller": ".", > > "disable_syscalls": ["keyctl", "add_key", "request_key"], > > For our bpf instances, instead of disable_syscalls we use enable_syscalls: > > "enable_syscalls": [ > "bpf", "mkdir", "mount$bpf", "unlink", "close", > "perf_event_open*", "ioctl$PERF*", "getpid", "gettid", > "socketpair", "sendmsg", "recvmsg", "setsockopt$sock_attach_bpf", > "socket$kcm", "ioctl$sock_kcm*", "syz_clone", > "mkdirat$cgroup*", "openat$cgroup*", "write$cgroup*", > "openat$tun", "write$tun", "ioctl$TUN*", "ioctl$SIOCSIFHWADDR", > "openat$ppp", "syz_open_procfs$namespace" > ] I will try with the same list. Thanks! Song > > > "suppressions": ["some known bug"], > > "procs": 8, > > We usually run with "procs": 6, but it's not that important. > > > "type": "qemu", > > "vm": { > > "count": 16, > > "cpu": 2, > > "mem": 2048, > > "kernel": "linux/arch/x86/boot/bzImage" > > } > > } > > Otherwise I don't see any really significant differences. > > -- > Best Regards > Aleksandr > > > > > Is this correct? I am using stretch.img from syzkaller site, and the > > .config from > > the link above. > > > > Thanks, > > Song > >
