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Date:   Thu, 4 Mar 2021 14:29:30 +0100
From:   Greg KH <gregkh@linuxfoundation.org>
To:     Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp>
Cc:     stable@vger.kernel.org, sashal@kernel.org,
        Emmanuel Grumbach <emmanuel.grumbach@intel.com>,
        Luca Coelho <luciano.coelho@intel.com>,
        Kalle Valo <kvalo@codeaurora.org>
Subject: Re: [PATCH for 4.4.y] iwlwifi: pcie: fix to correct null check
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On Wed, Mar 03, 2021 at 04:57:31PM +0900, Nobuhiro Iwamatsu wrote:
> The fixes made in commit: 4ae5798004d8 ("iwlwifi: pcie: add a NULL check in
> iwl_pcie_txq_unmap") is not enough in 4.4.y tree.. This still have problems
> with null references. This provides the correct fix.
> Also, this is a problem only in 4.4.y. This patch has been applied to other
> LTS trees, but with the correct fixes.
> 
> Fixes: 4ae5798004d8 ("iwlwifi: pcie: add a NULL check in iwl_pcie_txq_unmap")
> Cc: stable@vger.kernel.org
> Cc: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
> Cc: Luca Coelho <luciano.coelho@intel.com>
> Cc: Kalle Valo <kvalo@codeaurora.org>
> Cc: Sasha Levin <sashal@kernel.org>
> Signed-off-by: Nobuhiro Iwamatsu (CIP) <nobuhiro1.iwamatsu@toshiba.co.jp>
> ---
>  drivers/net/wireless/iwlwifi/pcie/tx.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)

Thanks for the fix, now queued up.

greg k-h