linux-kernel - Re: [External] Re: [BUG] blacklist: Problem blacklisting hash (-13) during boot

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Message-ID: <fec5e8eb3803068a11267f386ddda389a1211736.camel@codeconstruct.com.au>
Date:   Sun, 26 Feb 2023 11:42:45 +0800
From:   Jeremy Kerr <jk@...econstruct.com.au>
To:     Mark Pearson <markpearson@...ovo.com>,
        Thomas Weißschuh <thomas@...ch.de>,
        Mickaël Salaün <mic@...ikod.net>
Cc:     Jarkko Sakkinen <jarkko@...nel.org>,
        David Howells <dhowells@...hat.com>,
        David Woodhouse <dwmw2@...radead.org>,
        keyrings@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-security-module <linux-security-module@...r.kernel.org>,
        "linux-integrity@...r.kernel.org" <linux-integrity@...r.kernel.org>
Subject: Re: [External] Re: [BUG] blacklist: Problem blacklisting hash (-13)
 during boot

Hi Mark,

> I have flagged this to the FW team (LO-2105) to get their feedback
> and see if we can get it addressed on our platforms.

Any progress from the FW team about this? I have a fresh-out-of-the-box
T14s with this issue, there's 33 duplicated hashes in dbx:

$ mokutil --dbx | grep -E '[[:xdigit:]]{64}' | sort | uniq -cd
      2   106faceacfecfd4e303b74f480a08098e2d0802b936f8ec774ce21f31686689c
      2   174e3a0b5b43c6a607bbd3404f05341e3dcf396267ce94f8b50e2e23a9da920c
      2   1aec84b84b6c65a51220a9be7181965230210d62d6d33c48999c6b295a2b0a06
      2   29c6eb52b43c3aa18b2cd8ed6ea8607cef3cfae1bafe1165755cf2e614844a44
      2   2b99cf26422e92fe365fbf4bc30d27086c9ee14b7a6fff44fb2f6b9001699939
      2   2e70916786a6f773511fa7181fab0f1d70b557c6322ea923b2a8d3b92b51af7d
      2   3fce9b9fdf3ef09d5452b0f95ee481c2b7f06d743a737971558e70136ace3e73
      2   45c7c8ae750acfbb48fc37527d6412dd644daed8913ccd8a24c94d856967df8e
      2   47cc086127e2069a86e03a6bef2cd410f8c55a6d6bdb362168c31b2ce32a5adf
      2   47ff1b63b140b6fc04ed79131331e651da5b2e2f170f5daef4153dc2fbc532b1
      3   5391c3a2fb112102a6aa1edc25ae77e19f5d6f09cd09eeb2509922bfcd5992ea
      2   58fb941aef95a25943b3fb5f2510a0df3fe44c58c95e0ab80487297568ab9771
      2   64575bd912789a2e14ad56f6341f52af6bf80cf94400785975e9f04e2d64d745
      2   71f2906fd222497e54a34662ab2497fcc81020770ff51368e9e3d9bfcbfd6375
      3   80b4d96931bf0d02fd91a61e19d14f1da452e66db2408ca8604d411f92659f0a
      2   82db3bceb4f60843ce9d97c3d187cd9b5941cd3de8100e586f2bda5637575f67
      2   8ad64859f195b5f58dafaa940b6a6167acd67a886e8f469364177221c55945b9
      2   8d8ea289cfe70a1c07ab7365cb28ee51edd33cf2506de888fbadd60ebf80481c
      2   90fbe70e69d633408d3e170c6832dbb2d209e0272527dfb63d49d29572a6f44c
      2   992d359aa7a5f789d268b94c11b9485a6b1ce64362b0edb4441ccc187c39647b
      2   aeebae3151271273ed95aa2e671139ed31a98567303a332298f83709a9d55aa1
      2   c3a99a460da464a057c3586d83cef5f4ae08b7103979ed8932742df0ed530c66
      2   c409bdac4775add8db92aa22b5b718fb8c94a1462c1fe9a416b95d8a3388c2fc
      2   c452ab846073df5ace25cca64d6b7a09d906308a1a65eb5240e3c4ebcaa9cc0c
      2   c5d9d8a186e2c82d09afaa2a6f7f2e73870d3e64f72c4e08ef67796a840f0fbd
      2   c617c1a8b1ee2a811c28b5a81b4c83d7c98b5b0c27281d610207ebe692c2967f
      2   c90f336617b8e7f983975413c997f10b73eb267fd8a10cb9e3bdbfc667abdb8b
      2   d063ec28f67eba53f1642dbf7dff33c6a32add869f6013fe162e2c32f1cbe56d
      2   d626157e1d6a718bc124ab8da27cbb65072ca03a7b6b257dbdcbbd60f65ef3d1
      2   e051b788ecbaeda53046c70e6af6058f95222c046157b8c4c1b9c2cfc65f46e5
      2   f52f83a3fa9cfbd6920f722824dbe4034534d25b8507246b3b957dac6e1bce7a
 
- and so generating 33 KERN_ERR messages on boot.

Given there's (at least) a few months' worth of GA machines with this
issue, can we suppress the warning?

Cheers,


Jeremy