Thread (34 messages) 34 messages, 10 authors, 2019-11-29

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)

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
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