linux-kernel - Re: [PATCH] ipv4: nexthop: Fix deadcode issue by performing a proper NULL check

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Date:   Tue, 02 Jun 2020 14:01:08 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     nikolay@...ulusnetworks.com
Cc:     patrickeigensatz@...il.com, dsahern@...nel.org,
        scan-admin@...erity.com, kuznet@....inr.ac.ru,
        yoshfuji@...ux-ipv6.org, kuba@...nel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ipv4: nexthop: Fix deadcode issue by performing a
 proper NULL check

From: Nikolay Aleksandrov <nikolay@...ulusnetworks.com>
Date: Tue, 2 Jun 2020 10:23:09 +0300

> On 01/06/2020 21:06, David Miller wrote:
>> From: patrickeigensatz@...il.com
>> Date: Mon,  1 Jun 2020 13:12:01 +0200
>> 
>>> From: Patrick Eigensatz <patrickeigensatz@...il.com>
>>>
>>> After allocating the spare nexthop group it should be tested for kzalloc()
>>> returning NULL, instead the already used nexthop group (which cannot be
>>> NULL at this point) had been tested so far.
>>>
>>> Additionally, if kzalloc() fails, return ERR_PTR(-ENOMEM) instead of NULL.
>>>
>>> Coverity-id: 1463885
>>> Reported-by: Coverity <scan-admin@...erity.com>
>>> Signed-off-by: Patrick Eigensatz <patrickeigensatz@...il.com>
>> 
>> Applied, thank you.
>> 
> 
> Hi Dave,
> I see this patch in -net-next but it should've been in -net as I wrote in my
> review[1]. This patch should go along with the recent nexthop set that fixes
> a few bugs, since it could result in a null ptr deref if the spare group cannot
> be allocated.
> How would you like to proceed? Should it be submitted for -net as well?

When I'm leading up to the merge window I just toss everything into net-next
and still queue things to -stable as needed.