Re: [PATCH] tpm: fix a race between poll and write in tpm-dev-common

[Jarkko Sakkinen]

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 MikulÄnas <grawity@xxxxxxxxx>
> Signed-off-by: Tadeusz Struk <tadeusz.struk@xxxxxxxxx>

Also, please add Cc: stable@xxxxxxxxxxxxxxx as the first tag.

/Jarkko