Re: unregister_netdevice: waiting for DEV to become free (2)
From: Toke Høiland-Jørgensen <hidden>
Date: 2019-10-16 10:34:51
Also in:
bpf, lkml
Possibly related (same subject, not in this thread)
- 2019-12-17 · Re: unregister_netdevice: waiting for DEV to become free (2) · Jouni Högander <hidden>
- 2019-12-16 · Re: unregister_netdevice: waiting for DEV to become free (2) · Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
- 2019-12-05 · Re: unregister_netdevice: waiting for DEV to become free (2) · Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
- 2019-12-05 · Re: unregister_netdevice: waiting for DEV to become free (2) · Jouni Högander <hidden>
- 2019-11-29 · Re: unregister_netdevice: waiting for DEV to become free (2) · Jouni Högander <hidden>
Alexei Starovoitov [off-list ref] writes:
On Fri, Oct 11, 2019 at 3:15 AM Tetsuo Handa [off-list ref] wrote:quoted
Hello. I noticed that syzbot is reporting that refcount incremented by bpf(BPF_MAP_UPDATE_ELEM) syscall is not decremented when unregister_netdevice() is called. Is this a BPF bug?Jesper, Toke, please take a look.
Yeah, that unregister notification handler definitely looks broken for hashmaps; I'll send a patch :) -Toke