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Date:   Thu, 21 Mar 2019 15:34:55 +0200
From:   Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
To:     Tadeusz Struk <tadeusz.struk@intel.com>
Cc:     grawity@gmail.com, James.Bottomley@HansenPartnership.com,
        linux-integrity@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] tpm: fix a race between poll and write in tpm-dev-common
Message-ID: <20190321133455.GD2267@linux.intel.com>
References: <155294749695.20367.14472779462229450620.stgit@tstruk-mobl1.jf.intel.com>
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On Mon, Mar 18, 2019 at 03:18:16PM -0700, Tadeusz Struk wrote:
> Since the poll returns EPOLLIN base on the state of two
> variables, the response_read being false and the
> response_length > 0 the poll needs to take the buffer_mutex
> after it is woken up.
> 
> Fixes: 9488585b21bef0df12 ("tpm: add support for partial reads")
> Reported-by: Mantas Mikulėnas <grawity@gmail.com>
> Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>

Also, please add Cc: stable@vger.kernel.org as the first tag.

/Jarkko