linux-kernel - Re: [PATCH v4] firmware_loader: Add debug message with checksum for FW file

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <0bcb1439-7a76-9f24-21be-2139b8e5c06d@linux.intel.com>
Date:   Fri, 17 Mar 2023 15:46:55 +0100
From:   Amadeusz Sławiński 
        <amadeuszx.slawinski@...ux.intel.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Russ Weight <russell.h.weight@...el.com>,
        Luis Chamberlain <mcgrof@...nel.org>,
        linux-kernel@...r.kernel.org,
        Cezary Rojewski <cezary.rojewski@...el.com>,
        "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>
Subject: Re: [PATCH v4] firmware_loader: Add debug message with checksum for
 FW file

On 3/17/2023 3:15 PM, Greg Kroah-Hartman wrote:
> On Fri, Mar 10, 2023 at 03:04:59PM +0100, Amadeusz Sławiński wrote:
>> Enable dynamic-debug logging of firmware filenames and SHA256 checksums
>> to clearly identify the firmware files that are loaded by the system.
>>
>> Example output:
>> [   34.944619] firmware_class:_request_firmware: i915 0000:00:02.0: Loaded FW: i915/kbl_dmc_ver1_04.bin, sha256: 2cde41c3e5ad181423bcc3e98ff9c49f743c88f18646af4d0b3c3a9664b831a1
>> [   48.155884] firmware_class:_request_firmware: snd_soc_avs 0000:00:1f.3: Loaded FW: intel/avs/cnl/dsp_basefw.bin, sha256: 43f6ac1b066e9bd0423d914960fbbdccb391af27d2b1da1085eee3ea8df0f357
>> [   49.579540] firmware_class:_request_firmware: snd_soc_avs 0000:00:1f.3: Loaded FW: intel/avs/rt274-tplg.bin, sha256: 4b3580da96dc3d2c443ba20c6728d8b665fceb3ed57223c3a57582bbad8e2413
>> [   49.798196] firmware_class:_request_firmware: snd_soc_avs 0000:00:1f.3: Loaded FW: intel/avs/hda-8086280c-tplg.bin, sha256: 5653172579b2be1b51fd69f5cf46e2bac8d63f2a1327924311c13b2f1fe6e601
>> [   49.859627] firmware_class:_request_firmware: snd_soc_avs 0000:00:1f.3: Loaded FW: intel/avs/dmic-tplg.bin, sha256: 00fb7fbdb74683333400d7e46925dae60db448b88638efcca0b30215db9df63f
>>
>> Reviewed-by: Cezary Rojewski <cezary.rojewski@...el.com>
>> Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@...ux.intel.com>
>> ---
>>
>> Changes in v4:
>>   * update menuconfig prompt and help message (Russ)
>>
>> Changes in v3:
>>   * add DYNAMIC_DEBUG and FW_LOADER as dependencies before option can be
>> enabled (kernel test robot)
>>
>> Changes in v2:
>>   * allocate buffers (Greg)
>>   * introduce CONFIG_ option to allow for CONFIG_CRYPTO and CONFIG_CRYPTO_SHA256
>> dependencies without introducing circular dependency (Greg)
>>   * add new line between includes and function name (Cezary)
>>
>> ---
>>   drivers/base/firmware_loader/Kconfig | 13 ++++++++
>>   drivers/base/firmware_loader/main.c  | 48 +++++++++++++++++++++++++++-
>>   2 files changed, 60 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/base/firmware_loader/Kconfig b/drivers/base/firmware_loader/Kconfig
>> index 5166b323a0f8..6520e8c9cb38 100644
>> --- a/drivers/base/firmware_loader/Kconfig
>> +++ b/drivers/base/firmware_loader/Kconfig
>> @@ -3,6 +3,7 @@ menu "Firmware loader"
>>   
>>   config FW_LOADER
>>   	tristate "Firmware loading facility" if EXPERT
>> +	select FW_LOADER_DEBUG if DYNAMIC_DEBUG
> 
> Why the select?  that prevents anyone from actually choosing this if
> they want to or not.  It also prevents them from disabling this option
> if they want to, while still keeping DYNAMIC_DEBUG enabled.
> 
> So please don't make this change.
>
Indeed it seems unnecessary, I removed it in v5.

Thanks,

Amadeusz