kernel/linux.git/drivers/char/tpm, branch v5.6.17

tpm: ibmvtpm: retry on H_CLOSED in tpm_ibmvtpm_send()

2020-04-29T14:34:47+00:00

commit eba5cf3dcb844c82f54d4a857e124824e252206d upstream. tpm_ibmvtpm_send() can fail during PowerVM Live Partition Mobility resume with an H_CLOSED return from ibmvtpm_send_crq(). The PAPR says, 'The "partner partition suspended" transport event disables the associated CRQ such that any H_SEND_CRQ hcall() to the associated CRQ returns H_Closed until the CRQ has been explicitly enabled using the H_ENABLE_CRQ hcall.' This patch adds a check in tpm_ibmvtpm_send() for an H_CLOSED return from ibmvtpm_send_crq() and in that case calls tpm_ibmvtpm_resume() and retries the ibmvtpm_send_crq() once. Cc: stable@vger.kernel.org # 3.7.x Fixes: 132f76294744 ("drivers/char/tpm: Add new device driver to support IBM vTPM") Reported-by: Linh Pham Reviewed-by: Stefan Berger Signed-off-by: George Wilson Tested-by: Linh Pham Reviewed-by: Jarkko Sakkinen Signed-off-by: Jarkko Sakkinen Signed-off-by: Greg Kroah-Hartman

tpm: fix wrong return value in tpm_pcr_extend

2020-04-29T14:34:47+00:00

commit 29cb79795e324a8b65e7891d76f8f6ca911ba440 upstream. For the algorithm that does not match the bank, a positive value EINVAL is returned here. I think this is a typo error. It is necessary to return an error value. Cc: stable@vger.kernel.org # 5.4.x Fixes: 9f75c8224631 ("KEYS: trusted: correctly initialize digests and fix locking issue") Signed-off-by: Tianjia Zhang Reviewed-by: Roberto Sassu Reviewed-by: Jerry Snitselaar Reviewed-by: Jarkko Sakkinen Signed-off-by: Jarkko Sakkinen Signed-off-by: Greg Kroah-Hartman

tpm/tpm_tis: Free IRQ if probing fails

2020-04-29T14:34:47+00:00

commit b160c94be5d2816b62c8ac338605668304242959 upstream. Call disable_interrupts() if we have to revert to polling in order not to unnecessarily reserve the IRQ for the life-cycle of the driver. Cc: stable@vger.kernel.org # 4.5.x Reported-by: Hans de Goede Fixes: e3837e74a06d ("tpm_tis: Refactor the interrupt setup") Signed-off-by: Jarkko Sakkinen Signed-off-by: Greg Kroah-Hartman

tpm: tpm2_bios_measurements_next should increase position index

2020-04-17T14:13:29+00:00

commit f9bf8adb55cd5a357b247a16aafddf8c97b276e0 upstream. If .next function does not change position index, following .show function will repeat output related to current position index. For /sys/kernel/security/tpm0/binary_bios_measurements: 1) read after lseek beyound end of file generates whole last line. 2) read after lseek to middle of last line generates expected end of last line and unexpected whole last line once again. Cc: stable@vger.kernel.org # 4.19.x Fixes: 1f4aace60b0e ("fs/seq_file.c: simplify seq_file iteration code ...") Link: https://bugzilla.kernel.org/show_bug.cgi?id=206283 Signed-off-by: Vasily Averin Reviewed-by: Jarkko Sakkinen Signed-off-by: Jarkko Sakkinen Signed-off-by: Greg Kroah-Hartman

tpm: tpm1_bios_measurements_next should increase position index

2020-04-17T14:13:29+00:00

commit d7a47b96ed1102551eb7325f97937e276fb91045 upstream. If .next function does not change position index, following .show function will repeat output related to current position index. In case of /sys/kernel/security/tpm0/ascii_bios_measurements and binary_bios_measurements: 1) read after lseek beyound end of file generates whole last line. 2) read after lseek to middle of last line generates expected end of last line and unexpected whole last line once again. Cc: stable@vger.kernel.org # 4.19.x Fixes: 1f4aace60b0e ("fs/seq_file.c: simplify seq_file iteration code ...") Link: https://bugzilla.kernel.org/show_bug.cgi?id=206283 Signed-off-by: Vasily Averin Reviewed-by: Jarkko Sakkinen Signed-off-by: Jarkko Sakkinen Signed-off-by: Greg Kroah-Hartman

tpm: Don't make log failures fatal

2020-04-17T14:13:29+00:00

commit 805fa88e0780b7ce1cc9b649dd91a0a7164c6eb4 upstream. If a TPM is in disabled state, it's reasonable for it to have an empty log. Bailing out of probe in this case means that the PPI interface isn't available, so there's no way to then enable the TPM from the OS. In general it seems reasonable to ignore log errors - they shouldn't interfere with any other TPM functionality. Signed-off-by: Matthew Garrett Cc: stable@vger.kernel.org # 4.19.x Reviewed-by: Jerry Snitselaar Reviewed-by: Jarkko Sakkinen Signed-off-by: Jarkko Sakkinen Signed-off-by: Greg Kroah-Hartman

tpm: Initialize crypto_id of allocated_banks to HASH_ALGO__LAST

2020-02-17T18:47:06+00:00

chip->allocated_banks, an array of tpm_bank_info structures, contains the list of TPM algorithm IDs of allocated PCR banks. It also contains the corresponding ID of the crypto subsystem, so that users of the TPM driver can calculate a digest for a PCR extend operation. However, if there is no mapping between TPM algorithm ID and crypto ID, the crypto_id field of tpm_bank_info remains set to zero (the array is allocated and initialized with kcalloc() in tpm2_get_pcr_allocation()). Zero should not be used as value for unknown mappings, as it is a valid crypto ID (HASH_ALGO_MD4). Thus, initialize crypto_id to HASH_ALGO__LAST. Cc: stable@vger.kernel.org # 5.1.x Fixes: 879b589210a9 ("tpm: retrieve digest size of unknown algorithms with PCR read") Signed-off-by: Roberto Sassu Reviewed-by: Petr Vorel Reviewed-by: Jarkko Sakkinen Signed-off-by: Jarkko Sakkinen

tpm: Revert tpm_tis_spi_mod.ko to tpm_tis_spi.ko.

2020-02-17T18:46:34+00:00

Revert tpm_tis_spi_mod.ko back to tpm_tis_spi.ko as the rename could break user space scripts. This can be achieved by renaming tpm_tis_spi.c as tpm_tis_spi_main.c. Then tpm_tis_spi-y can be used inside the makefile. Cc: Andrey Pronin Cc: Stephen Boyd Cc: stable@vger.kernel.org # 5.5.x Fixes: 797c0113c9a4 ("tpm: tpm_tis_spi: Support cr50 devices") Reported-by: Alexander Steffen Tested-by: Alexander Steffen Reviewed-by: Stephen Boyd Signed-off-by: Jarkko Sakkinen

tpm: Add tpm_version_major sysfs file

2020-01-22T08:46:51+00:00

Easily determining what TCG version a tpm device implements has been a pain point for userspace for a long time, so add a sysfs file to report the TCG major version of a tpm device. Also add an entry to Documentation/ABI/stable/sysfs-class-tpm describing the new file. Cc: Jarkko Sakkinen Cc: Mimi Zohar Cc: Peter Huewe Cc: Jason Gunthorpe Cc: linux-integrity@vger.kernel.org Signed-off-by: Jerry Snitselaar Reviewed-by: Mimi Zohar Reviewed-by: Jarkko Sakkinen Signed-off-by: Jarkko Sakkinen

tpm: Handle negative priv->response_len in tpm_common_read()

2020-01-08T16:11:09+00:00

The priv->response_length can hold the size of an response or an negative error code, and the tpm_common_read() needs to handle both cases correctly. Changed the type of response_length to signed and accounted for negative value in tpm_common_read(). Cc: stable@vger.kernel.org Fixes: d23d12484307 ("tpm: fix invalid locking in NONBLOCKING mode") Reported-by: Laura Abbott Signed-off-by: Tadeusz Struk Reviewed-by: Jarkko Sakkinen Signed-off-by: Jarkko Sakkinen