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Date: Mon, 28 Mar 2022 10:35:42 +0800 From: Xiaomeng Tong <xiam0nd.tong@...il.com> To: olteanv@...il.com Cc: andrew@...n.ch, davem@...emloft.net, f.fainelli@...il.com, kuba@...nel.org, linux-kernel@...r.kernel.org, netdev@...r.kernel.org, pabeni@...hat.com, stable@...r.kernel.org, vivien.didelot@...il.com, xiam0nd.tong@...il.com Subject: Re: [PATCH] dsa: bcm_sf2_cfp: fix an incorrect NULL check on list iterator On Sun, 27 Mar 2022 21:58:05 +0300, Vladimir Oltean wrote: > On Sun, Mar 27, 2022 at 01:55:47PM +0800, Xiaomeng Tong wrote: > > The bug is here: > > return rule; > > > > The list iterator value 'rule' will *always* be set and non-NULL > > by list_for_each_entry(), so it is incorrect to assume that the > > iterator value will be NULL if the list is empty or no element > > is found. > > > > To fix the bug, return 'rule' when found, otherwise return NULL. > > > > Cc: stable@...r.kernel.org > > Fixes: ae7a5aff783c7 ("net: dsa: bcm_sf2: Keep copy of inserted rules") > > Signed-off-by: Xiaomeng Tong <xiam0nd.tong@...il.com> > > --- > > The change looks correct, but from a process standpoint for next time > (a) you should have copied Florian, the driver's maintainer (which I did now) > who appears on the top of the list in the output of ./get_maintainer.pl > (b) networking bugfixes that apply to the "net" tree shouldn't need > stable@...r.kernel.org copied, instead just target the patch against > the https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git > tree and mark the subject prefix as "[PATCH net]". > > Reviewed-by: Vladimir Oltean <olteanv@...il.com> Thank you for your patient review and good suggestion, i got it. I'm sorry I forgot to copy Florian. -- Xiaomeng tong
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