Tadeusz Struk 4d6ebc4c49 tpm: fix invalid locking in NONBLOCKING mode ...

commit d23d124843 upstream.

When an application sends TPM commands in NONBLOCKING mode
the driver holds chip->tpm_mutex returning from write(),
which triggers: "WARNING: lock held when returning to user space".
To fix this issue the driver needs to release the mutex before
returning and acquire it again in tpm_dev_async_work() before
sending the command.

Cc: stable@vger.kernel.org
Fixes: 9e1b74a63f (tpm: add support for nonblocking operation)
Reported-by: Jeffrin Jose T <jeffrin@rajagiritech.edu.in>
Tested-by: Jeffrin Jose T <jeffrin@rajagiritech.edu.in>
Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2019-12-31 16:45:52 +01:00

..

eventlog

tpm: Don't duplicate events from the final event log in the TCG2 log

2019-06-24 23:57:50 +03:00

st33zp24

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 399

2019-06-05 17:37:12 +02:00

Kconfig

tpm/tpm_ftpm_tee: A driver for firmware TPM running inside TEE

2019-09-02 17:08:35 +03:00

Makefile

tpm/tpm_ftpm_tee: A driver for firmware TPM running inside TEE

2019-09-02 17:08:35 +03:00

tpm1-cmd.c

tpm: tpm_ibm_vtpm: Fix unallocated banks

2019-08-05 00:55:00 +03:00

tpm2-cmd.c

tpm: add check after commands attribs tab allocation

2019-12-17 19:55:50 +01:00

tpm2-space.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441

2019-06-05 17:37:17 +02:00

tpm_atmel.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441

2019-06-05 17:37:17 +02:00

tpm_atmel.h

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441

2019-06-05 17:37:17 +02:00

tpm_crb.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441

2019-06-05 17:37:17 +02:00

tpm_ftpm_tee.c

tpm/tpm_ftpm_tee: A driver for firmware TPM running inside TEE

2019-09-02 17:08:35 +03:00

tpm_ftpm_tee.h

tpm/tpm_ftpm_tee: A driver for firmware TPM running inside TEE

2019-09-02 17:08:35 +03:00

tpm_i2c_atmel.c

…

tpm_i2c_infineon.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441

2019-06-05 17:37:17 +02:00

tpm_i2c_nuvoton.c

…

tpm_ibmvtpm.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441

2019-06-05 17:37:17 +02:00

tpm_ibmvtpm.h

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441

2019-06-05 17:37:17 +02:00

tpm_infineon.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441

2019-06-05 17:37:17 +02:00

tpm_nsc.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441

2019-06-05 17:37:17 +02:00

tpm_ppi.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441

2019-06-05 17:37:17 +02:00

tpm_tis_core.c

tpm_tis: reserve chip for duration of tpm_tis_core_init

2019-12-31 16:45:52 +01:00

tpm_tis_core.h

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441

2019-06-05 17:37:17 +02:00

tpm_tis_spi.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441

2019-06-05 17:37:17 +02:00

tpm_tis.c

tpm: Switch to platform_get_irq_optional()

2019-12-17 19:55:51 +01:00

tpm_vtpm_proxy.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441

2019-06-05 17:37:17 +02:00

tpm-chip.c

tpm: Remove a deprecated comments about implicit sysfs locking

2019-09-02 17:08:35 +03:00

tpm-dev-common.c

tpm: fix invalid locking in NONBLOCKING mode

2019-12-31 16:45:52 +01:00

tpm-dev.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441

2019-06-05 17:37:17 +02:00

tpm-dev.h

…

tpm-interface.c

tpm: Wrap the buffer from the caller to tpm_buf in tpm_send()

2019-09-25 02:43:57 +03:00

tpm-sysfs.c

tpm: Remove a deprecated comments about implicit sysfs locking

2019-09-02 17:08:35 +03:00

tpm.h

tpm: tpm_ibm_vtpm: Fix unallocated banks

2019-08-05 00:55:00 +03:00

tpmrm-dev.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 505

2019-06-19 17:11:22 +02:00

xen-tpmfront.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500

2019-06-19 17:09:55 +02:00