Re: [PATCH] tcp: Revert "tcp: tcp_probe: use spin_lock_bh()"

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On Wed, Sep 12, 2018 at 12:06:06PM +0200, Matthieu Baerts wrote:
> From: Eric Dumazet <edumazet@xxxxxxxxxx>
> 
> commit 29869d66870a715177bfb505f66a7e0e8bcc89c3 upstream.
> 
> This reverts commit e70ac171658679ecf6bea4bbd9e9325cd6079d2b.
> 
> jtcp_rcv_established() is in fact called with hard irq being disabled.
> 
> Initial bug report from Ricardo Nabinger Sanchez [1] still needs
> to be investigated, but does not look like a TCP bug.
> 
> [1] https://www.spinics.net/lists/netdev/msg420960.html
> 
> Note: reasons for the backport in v4.9.y are described there:
> 
>     https://www.spinics.net/lists/stable/msg255166.html
> 
> Signed-off-by: Eric Dumazet <edumazet@xxxxxxxxxx>
> Reported-by: kernel test robot <xiaolong.ye@xxxxxxxxx>
> Cc: Ricardo Nabinger Sanchez <rnsanchez@xxxxxxxxx>
> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
> Cc: stable@xxxxxxxxxxxxxxx # 4.9
> Signed-off-by: Matthieu Baerts <matthieu.baerts@xxxxxxxxxxxx>
> ---
>  net/ipv4/tcp_probe.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)

Thanks for this, now queued up.

greg k-h



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