Re: [PATCH] xen/netfront: don't bug in case of too many frags

[David Miller]

From: Juergen Gross <jgross@xxxxxxxx>
Date: Tue, 11 Sep 2018 09:04:48 +0200

> Commit 57f230ab04d291 ("xen/netfront: raise max number of slots in
> xennet_get_responses()") raised the max number of allowed slots by one.
> This seems to be problematic in some configurations with netback using
> a larger MAX_SKB_FRAGS value (e.g. old Linux kernel with MAX_SKB_FRAGS
> defined as 18 instead of nowadays 17).
> 
> Instead of BUG_ON() in this case just fall back to retransmission.
> 
> Fixes: 57f230ab04d291 ("xen/netfront: raise max number of slots in xennet_get_responses()")
> Cc: stable@xxxxxxxxxxxxxxx
> Signed-off-by: Juergen Gross <jgross@xxxxxxxx>

Applied.