netdev - Re: [PATCH net-next 1/2] igb: Fix an end of loop test

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Date: Fri, 6 Oct 2023 13:20:34 +0200
From: Simon Horman <horms@...nel.org>
To: Dan Carpenter <dan.carpenter@...aro.org>
Cc: Jinjie Ruan <ruanjinjie@...wei.com>,
	Jesse Brandeburg <jesse.brandeburg@...el.com>,
	Tony Nguyen <anthony.l.nguyen@...el.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Jacob Keller <jacob.e.keller@...el.com>,
	intel-wired-lan@...ts.osuosl.org, netdev@...r.kernel.org,
	kernel-janitors@...r.kernel.org
Subject: Re: [PATCH net-next 1/2] igb: Fix an end of loop test

On Thu, Oct 05, 2023 at 04:57:21PM +0300, Dan Carpenter wrote:
> When we exit a list_for_each_entry() without hitting a break statement,
> the list iterator isn't NULL, it just point to an offset off the
> list_head.  In that situation, it wouldn't be too surprising for
> entry->free to be true and we end up corrupting memory.
> 
> The way to test for these is to just set a flag.
> 
> Fixes: c1fec890458a ("ethernet/intel: Use list_for_each_entry() helper")
> Signed-off-by: Dan Carpenter <dan.carpenter@...aro.org>

Reviewed-by: Simon Horman <horms@...nel.org>