From: Lino Sanfilippo <LinoSanfilippo@gmx.de>
To: peterhuewe@gmx.de, jarkko@kernel.org
Cc: jgg@ziepe.ca, stefanb@linux.vnet.ibm.com,
linux-integrity@vger.kernel.org, linux-kernel@vger.kernel.org,
LinoSanfilippo@gmx.de, p.rosenberger@kunbus.com
Subject: [PATCH 0/4] TPM fixes
Date: Sat, 16 Jan 2021 02:22:37 +0100 [thread overview]
Message-ID: <1610760161-21982-1-git-send-email-LinoSanfilippo@gmx.de> (raw)
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
next reply other threads:[~2021-01-16 1:25 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-16 1:22 Lino Sanfilippo [this message]
2021-01-16 1:22 ` [PATCH 1/4] tpm: in case of error properly cleanup in tpmm_chip_alloc Lino Sanfilippo
2021-01-17 18:08 ` Jarkko Sakkinen
2021-01-16 1:22 ` [PATCH 2/4] tpm: fix reference counting for struct tpm_chip Lino Sanfilippo
2021-01-17 18:11 ` Jarkko Sakkinen
2021-01-16 1:22 ` [PATCH 3/4] tpm: in tpm2_del_space check if ops pointer is still valid Lino Sanfilippo
2021-01-17 18:13 ` Jarkko Sakkinen
2021-01-24 16:47 ` Lino Sanfilippo
2021-01-26 15:29 ` Jarkko Sakkinen
2021-01-27 15:14 ` Lino Sanfilippo
2021-01-16 1:22 ` [PATCH 4/4] tpm: Provide a function tpm_chip_free() to free tpm chips Lino Sanfilippo
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