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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> |
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| .. | ||
| libstub | ||
| test | ||
| apple-properties.c | ||
| arm-init.c | ||
| arm-runtime.c | ||
| capsule-loader.c | ||
| capsule.c | ||
| cper-arm.c | ||
| cper.c | ||
| dev-path-parser.c | ||
| efi-bgrt.c | ||
| efi-pstore.c | ||
| efi.c | ||
| efibc.c | ||
| efivars.c | ||
| esrt.c | ||
| fake_mem.c | ||
| Kconfig | ||
| Makefile | ||
| memattr.c | ||
| memmap.c | ||
| reboot.c | ||
| runtime-map.c | ||
| runtime-wrappers.c | ||
| tpm.c | ||
| vars.c | ||