Subject: Re: Double free of struct sk_buff reported by SLAB_CONSISTENCY_CHECKS with init_on_free

From: Thibaut Sautereau <[email-masked]>
Date: Tue, 5 Nov 2019 09:05:54 +0100

On Mon, Nov 04, 2019 at 09:33:18AM -0800, Eric Dumazet wrote:
> 
> 
> On 11/4/19 9:03 AM, Thibaut Sautereau wrote:
> > 
> > We first encountered this issue under huge network traffic (system image
> > download), and I was able to reproduce by simply sending a big packet
> > with `ping -s 65507 <ip>`, which crashes the kernel every single time.
> > 
> 
> Since you have a repro, could you start a bisection ?

>From my previous email:

	"Bisection points to the following commit: 1b7e816fc80e ("mm: slub:
	Fix slab walking for init_on_free"), and indeed the BUG is not
	triggered when init_on_free is disabled."

Or are you meaning something else?

-- 
Thibaut Sautereau
CLIP OS developer