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Mon, 17 Jun 2024 15:42:34 -0400 (EDT) Message-ID: Subject: Re: [PATCH] tpm: ibmvtpm: Call tpm2_sessions_init() to initialize session support From: James Bottomley To: Stefan Berger , linux-integrity@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, jarkko@kernel.org Date: Mon, 17 Jun 2024 15:42:32 -0400 In-Reply-To: <20240617193408.1234365-1-stefanb@linux.ibm.com> References: <20240617193408.1234365-1-stefanb@linux.ibm.com> Content-Type: text/plain; charset="UTF-8" User-Agent: Evolution 3.42.4 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: naveen.n.rao@linux.ibm.com, linux-kernel@vger.kernel.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On Mon, 2024-06-17 at 15:34 -0400, Stefan Berger wrote: > Fix the following type of error message caused by a missing call to > tpm2_sessions_init() in the IBM vTPM driver: > > [    2.987131] tpm tpm0: tpm2_load_context: failed with a TPM error > 0x01C4 > [    2.987140] ima: Error Communicating to TPM chip, result: -14 > > Fixes: d2add27cf2b8 ("tpm: Add NULL primary creation") > Signed-off-by: Stefan Berger > --- >  drivers/char/tpm/tpm_ibmvtpm.c | 4 ++++ >  1 file changed, 4 insertions(+) > > diff --git a/drivers/char/tpm/tpm_ibmvtpm.c > b/drivers/char/tpm/tpm_ibmvtpm.c > index d3989b257f42..1e5b107d1f3b 100644 > --- a/drivers/char/tpm/tpm_ibmvtpm.c > +++ b/drivers/char/tpm/tpm_ibmvtpm.c > @@ -698,6 +698,10 @@ static int tpm_ibmvtpm_probe(struct vio_dev > *vio_dev, >                 rc = tpm2_get_cc_attrs_tbl(chip); >                 if (rc) >                         goto init_irq_cleanup; > + > +               rc = tpm2_sessions_init(chip); > +               if (rc) > +                       goto init_irq_cleanup; This looks wrong: the whole thing is designed to occur in the bootstrap phase from tpm_chip_register() (which tpm_ibmvtpm.c definitely calls), so why isn't it happening? James