Re: [PATCH 4.9.y] Revert "net: sit: fix memory leak in sit_init_net()"

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On Fri, Oct 18, 2019 at 09:48:05AM +0800, maowenan wrote:
> 
> 
> On 2019/10/17 2:30, Greg KH wrote:
> > On Wed, Oct 16, 2019 at 02:33:54PM +0530, Ajay Kaher wrote:
> >> This reverts commit 375d6d454a95ebacb9c6eb0b715da05a4458ffef which is
> >> commit 07f12b26e21ab359261bf75cfcb424fdc7daeb6d upstream.
> >>
> >> Unnecessarily calling free_netdev() from sit_init_net().
> >> ipip6_dev_free() of 4.9.y called free_netdev(), so no need
> >> to call again after ipip6_dev_free().
> >>
> >> Cc: Mao Wenan <maowenan@xxxxxxxxxx>
> >> Cc: David S. Miller <davem@xxxxxxxxxxxxx>
> >> Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
> >> Signed-off-by: Ajay Kaher <akaher@xxxxxxxxxx>
> >> ---
> >>  net/ipv6/sit.c | 1 -
> >>  1 file changed, 1 deletion(-)
> >>
> >> diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
> >> index 47ca2a2..16eba7b 100644
> >> --- a/net/ipv6/sit.c
> >> +++ b/net/ipv6/sit.c
> >> @@ -1856,7 +1856,6 @@ static int __net_init sit_init_net(struct net *net)
> >>  
> >>  err_reg_dev:
> >>  	ipip6_dev_free(sitn->fb_tunnel_dev);
> >> -	free_netdev(sitn->fb_tunnel_dev);
> >>  err_alloc_dev:
> >>  	return err;
> >>  }
> >> -- 
> >> 2.7.4
> >>
> > 
> > Mao, are you ok with this change?
> > 
> > thanks,
> > 
> > greg k-h
> > 
> 
> Greg, ipip6_dev_free has already called free_netdev in stable 4.9.
> 
> Reviewed-by: Mao Wenan <maowenan@xxxxxxxxxx>

Thanks, now queued up.

greg k-h



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