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Message-Id: <1610760161-21982-1-git-send-email-LinoSanfilippo@gmx.de>
Date: Sat, 16 Jan 2021 02:22:37 +0100
From: Lino Sanfilippo <LinoSanfilippo@....de>
To: peterhuewe@....de, jarkko@...nel.org
Cc: jgg@...pe.ca, stefanb@...ux.vnet.ibm.com,
linux-integrity@...r.kernel.org, linux-kernel@...r.kernel.org,
LinoSanfilippo@....de, p.rosenberger@...bus.com
Subject: [PATCH 0/4] TPM fixes
This patch series fixes some flaws in the TPM code. Most importantly a
reference count issue (patch 2) and a possible NULL pointer access
(patch 3). Patch 1 fixes the error path in tpmm_chip_alloc() and is in
preparation to patch 2 which extends this function. Patch 4 introduces
a new function tpm_chip_free() which is used as a counterpart to
tpm_chip_alloc(). The main reason for this function is to hide the
internals of tpm_chip cleanup by means of multiple reference count
handling.
Lino Sanfilippo (4):
tpm: in case of error properly cleanup in tpmm_chip_alloc
tpm: fix reference counting for struct tpm_chip
tpm: in tpm2_del_space check if ops pointer is still valid
tpm: Provide a function tpm_chip_free() to free tpm chips
drivers/char/tpm/tpm-chip.c | 33 ++++++++++++++++++++++++++++++---
drivers/char/tpm/tpm.h | 1 +
drivers/char/tpm/tpm2-space.c | 2 +-
drivers/char/tpm/tpm_ftpm_tee.c | 4 ++--
drivers/char/tpm/tpm_vtpm_proxy.c | 2 +-
5 files changed, 35 insertions(+), 7 deletions(-)
--
2.7.4
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