linux-kernel - Re: [GIT PULL] tpmdd: a critical bug fix for v6.4-rc1

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Date:   Thu, 27 Apr 2023 08:38:08 -0700
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Jarkko Sakkinen <jarkko@...nel.org>
Cc:     Eric Snowberg <eric.snowberg@...cle.com>,
        Lino Sanfilippo <l.sanfilippo@...bus.com>,
        linux-integrity@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [GIT PULL] tpmdd: a critical bug fix for v6.4-rc1

On Thu, Apr 27, 2023 at 4:11 AM Jarkko Sakkinen <jarkko@...nel.org> wrote:
>
> This PR fixes a critical bug in my first pull request.

That doesn't work AT ALL.

You have this duplicated line

-       TPM_CHIP_FLAG_FIRMWARE_UPGRADE  = BIT(7),
+       TPM_CHIP_FLAG_FIRMWARE_UPGRADE          = BIT(7),
+       TPM_CHIP_FLAG_FIRMWARE_UPGRADE          = BIT(7),
+       TPM_CHIP_FLAG_FIRMWARE_UPGRADE          = BIT(7),

in that patch (presumably due to some edit-time fat-fingering), which
causes lots and lots of

  ./include/linux/tpm.h:285:9: error: redeclaration of enumerator
‘TPM_CHIP_FLAG_FIRMWARE_UPGRADE’
    285 |         TPM_CHIP_FLAG_FIRMWARE_UPGRADE          = BIT(7),
        |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  ./include/linux/tpm.h:284:9: note: previous definition of
‘TPM_CHIP_FLAG_FIRMWARE_UPGRADE’ with type ‘int’
    284 |         TPM_CHIP_FLAG_FIRMWARE_UPGRADE          = BIT(7),
        |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  ./include/linux/tpm.h:286:9: error: redeclaration of enumerator
‘TPM_CHIP_FLAG_FIRMWARE_UPGRADE’
    286 |         TPM_CHIP_FLAG_FIRMWARE_UPGRADE          = BIT(7),
        |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

errors.

While I could easily just remove the duplicated lines in my merge,
that would make things non-bisectable, so I unpulled this instead.

             Linus