On Tue, Mar 13, 2018 at 02:09:21PM +0000, Ard Biesheuvel wrote: > As reported by Jeremy, 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@xxxxxxxxxx> > Signed-off-by: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx> Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@xxxxxxxxxxxxxxx> /Jarkko -- To unsubscribe from this list: send the line "unsubscribe linux-efi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
