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linux/drivers/char/tpm
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Tadeusz Struk d23d124843 tpm: fix invalid locking in NONBLOCKING mode 
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>
2019-12-17 12:20:04 +02:00
..
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_tis_spi: Support cr50 devices 2019-11-12 21:45:37 +02:00
Makefile tpm: tpm_tis_spi: Support cr50 devices 2019-11-12 21:45:37 +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 2019-12-17 12:20:04 +02:00
tpm-dev.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441 2019-06-05 17:37:17 +02:00
tpm-dev.h tpm: add support for partial reads 2018-12-17 13:45:10 +02:00
tpm-interface.c KEYS: trusted: Move TPM2 trusted keys code 2019-11-12 21:45:37 +02:00
tpm-sysfs.c tpm: Remove duplicate code from caps_show() in tpm-sysfs.c 2019-11-12 21:45:36 +02:00
tpm.h security: keys: trusted: fix lost handle flush 2019-12-17 11:46:43 +02:00
tpm1-cmd.c tpm: provide a way to override the chip returned durations 2019-11-12 21:45:36 +02:00
tpm2-cmd.c security: keys: trusted: fix lost handle flush 2019-12-17 11:46:43 +02:00
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 tpm_crb: fix fTPM on AMD Zen+ CPUs 2019-11-12 21:45:37 +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 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
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 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
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.c tpm: Switch to platform_get_irq_optional() 2019-11-12 21:45:37 +02:00
tpm_tis_core.c tpm_tis: reserve chip for duration of tpm_tis_core_init 2019-12-17 02:57:33 +02:00
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 tpm: tpm_tis_spi: Drop THIS_MODULE usage from driver struct 2019-11-12 21:45:37 +02:00
tpm_tis_spi.h tpm: tpm_tis_spi: Support cr50 devices 2019-11-12 21:45:37 +02:00
tpm_tis_spi_cr50.c tpm: tpm_tis_spi: Support cr50 devices 2019-11-12 21:45:37 +02:00
tpm_vtpm_proxy.c compat_ioctl: move drivers to compat_ptr_ioctl 2019-10-23 17:23:43 +02:00
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