On Mon, Sep 28, 2020 at 11:31 AM Arend Van Spriel <arend.vanspriel@xxxxxxxxxxxx> wrote: > > On 9/27/2020 10:47 AM, Dmitry Vyukov wrote: > > On Sun, Sep 27, 2020 at 10:38 AM syzbot > > <syzbot+3640e696903873858f7e@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote: > >> > >> Hello, > >> > >> syzbot found the following issue on: > >> > >> HEAD commit: 748d1c8a Merge branch 'devlink-Use-nla_policy-to-validate-.. > >> git tree: net-next > >> console output: https://syzkaller.appspot.com/x/log.txt?x=13ac3ec3900000 > >> kernel config: https://syzkaller.appspot.com/x/.config?x=51fb40e67d1e3dec > >> dashboard link: https://syzkaller.appspot.com/bug?extid=3640e696903873858f7e > >> compiler: gcc (GCC) 10.1.0-syz 20200507 > >> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1599be03900000 > >> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=149fd44b900000 > > > > Based on the reproducer, this looks like some wireless bug. > > +net/wireless maintainers. > > I don't think so looking at this part of the stacktrace: > > [ 51.814941] [<ffffffff8465cc95>] macvlan_common_newlink+0xa15/0x1720 > [ 51.833542] [<ffffffff84662548>] macvtap_newlink+0x128/0x230 > [ 51.858008] [<ffffffff85b68bfe>] rtnl_newlink+0xe5e/0x1780 > [ 51.925885] [<ffffffff85b5d32b>] rtnetlink_rcv_msg+0x22b/0xc20 > > Regards, > Arend That's the trace on the oldest release and the bisection was diverged somewhere midway. You may see this in the bisection log: https://syzkaller.appspot.com/text?tag=Log&x=1474aaad900000 Initially it crashed with this warning: all runs: crashed: WARNING in sta_info_insert_rcu This function is in net/mac80211/sta_info.c.
