Re: kernel BUG at net/key/af_key.c:LINE!

[Steffen Klassert]

On Fri, Nov 10, 2017 at 02:14:06PM +1100, Herbert Xu wrote:
> On Fri, Nov 10, 2017 at 01:30:38PM +1100, Herbert Xu wrote:
> > 
> > I found the problem.  This crap is coming from clone_policy.  Now
> > let me where this code came from.
> 
> ---8<---
> Subject: xfrm: Copy policy family in clone_policy
> 
> The syzbot found an ancient bug in the IPsec code.  When we cloned
> a socket policy (for example, for a child TCP socket derived from a
> listening socket), we did not copy the family field.  This results
> in a live policy with a zero family field.  This triggers a BUG_ON
> check in the af_key code when the cloned policy is retrieved.
> 
> This patch fixes it by copying the family field over.
> 
> Reported-by: syzbot <syzkaller@xxxxxxxxxxxxxxxx>
> Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>

Patch applied, thanks Herbert!