On 21/04/17 22:27, Cong Wang wrote:
> If we unregister the pim6reg device via default_device_exit_batch(),
> we will receive a notification and ip6mr_device_event() will
> unregister it again. This causes a kernel BUG at net/core/dev.c:6813.
>
> Like commit 7dc00c82cbb0 ("ipv4: Fix ipmr unregister device oops")
> we should avoid double-unregister in netdevice notifier.
>
> Reported-by: Andrey Konovalov <andreyk...@google.com>
> Cc: Linus Torvalds <torva...@linux-foundation.org>
> Signed-off-by: Cong Wang <xiyou.wangc...@gmail.com>
> ---
> net/ipv6/ip6mr.c | 11 ++++++-----
> 1 file changed, 6 insertions(+), 5 deletions(-)
>
Cong,
Please read the full thread, I've already provided a fix which is similar.
https://patchwork.ozlabs.org/patch/753531/
Thanks,
Nik
