Ard Biesheuvel 79832f0b5f efi/libstub/tpm: Initialize pointer variables to zero for mixed mode ...

As reported by Jeremy Cline, running the new TPM libstub code in mixed
mode (i.e., 64-bit kernel on 32-bit UEFI) results in hangs when invoking
the TCG2 protocol, or when accessing the log_tbl pool allocation.

The reason turns out to be that in both cases, the 64-bit pointer
variables are not fully initialized by the 32-bit EFI code, and so
we should take care to zero initialize these variables beforehand,
or we'll end up dereferencing bogus pointers.

Reported-by: Jeremy Cline <jeremy@jcline.org>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: hdegoede@redhat.com
Cc: jarkko.sakkinen@linux.intel.com
Cc: javierm@redhat.com
Cc: linux-efi@vger.kernel.org
Cc: tweek@google.com
Link: http://lkml.kernel.org/r/20180313140922.17266-2-ard.biesheuvel@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>

2018-03-13 15:28:29 +01:00

..

libstub

efi/libstub/tpm: Initialize pointer variables to zero for mixed mode

2018-03-13 15:28:29 +01:00

test

License cleanup: add SPDX license identifiers to some files

2017-11-02 10:04:46 -07:00

apple-properties.c

treewide: Consolidate Apple DMI checks

2017-08-03 23:26:22 +02:00

arm-init.c

efi/arm/arm64: Add missing assignment of efi.config_table

2017-08-21 09:43:49 +02:00

arm-runtime.c

efi/arm: Enable DMI/SMBIOS

2017-06-05 17:50:44 +02:00

capsule-loader.c

efi/capsule-loader: Fix pr_err() string to end with newline

2018-01-03 14:03:48 +01:00

capsule.c

efi/capsule-loader: Use page addresses rather than struct page pointers

2017-06-05 17:50:41 +02:00

cper-arm.c

efi: Parse ARM error information value

2018-01-03 14:03:48 +01:00

cper.c

efi: Move ARM CPER code to new file

2018-01-03 14:03:48 +01:00

dev-path-parser.c

efi: Add device path parser

2016-11-13 08:23:15 +01:00

efi-bgrt.c

efi/bgrt: Use efi_mem_type()

2017-08-26 09:20:33 +02:00

efi-pstore.c

pstore: Populate pstore record->time field

2017-05-31 10:13:44 -07:00

efi.c

Merge branch 'next-tpm' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security

2018-01-31 13:12:31 -08:00

efibc.c

efibc: Report more information in the error messages

2016-06-27 13:06:54 +02:00

efivars.c

efi: Don't use spinlocks for efi vars

2016-09-09 16:08:42 +01:00

esrt.c

efi/esrt: Use memunmap() instead of kfree() to free the remapping

2017-12-06 19:32:08 +01:00

fake_mem.c

x86/efi: Don't allocate memmap through memblock after mm_init()

2017-01-07 08:58:07 +01:00

Kconfig

Kconfig updates for v4.16

2018-02-01 11:45:49 -08:00

Makefile

Merge branch 'next-tpm' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security

2018-01-31 13:12:31 -08:00

memattr.c

x86/efi: Add support for EFI_MEMORY_ATTRIBUTES_TABLE

2017-02-01 08:45:44 +01:00

memmap.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

reboot.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

runtime-map.c

efi: Move some sysfs files to be read-only by root

2017-12-06 19:31:39 +01:00

runtime-wrappers.c

efi: Replace runtime services spinlock with semaphore

2016-09-09 16:08:43 +01:00

tpm.c

efi: call get_event_log before ExitBootServices

2018-01-08 12:58:35 +02:00

vars.c

efi: Don't use spinlocks for efi vars

2016-09-09 16:08:42 +01:00