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| author | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2018-05-04 07:59:58 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2018-05-14 08:56:29 +0200 |
| commit | 0b3225ab9407f557a8e20f23f37aa7236c10a9b1 (patch) | |
| tree | 22d16961238b4d1afd1b8813229ce001956889f6 /drivers/firmware | |
| parent | 67b8d5c7081221efa252e111cd52532ec6d4266f (diff) | |
| download | talos-op-linux-0b3225ab9407f557a8e20f23f37aa7236c10a9b1.tar.gz talos-op-linux-0b3225ab9407f557a8e20f23f37aa7236c10a9b1.zip | |
efi: Avoid potential crashes, fix the 'struct efi_pci_io_protocol_32' definition for mixed mode
Mixed mode allows a kernel built for x86_64 to interact with 32-bit
EFI firmware, but requires us to define all struct definitions carefully
when it comes to pointer sizes.
'struct efi_pci_io_protocol_32' currently uses a 'void *' for the
'romimage' field, which will be interpreted as a 64-bit field
on such kernels, potentially resulting in bogus memory references
and subsequent crashes.
Tested-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: <stable@vger.kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Link: http://lkml.kernel.org/r/20180504060003.19618-13-ard.biesheuvel@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/firmware')
0 files changed, 0 insertions, 0 deletions
