Bug#924794: marked as done (CONFIG_EFI_VARS_PSTORE_DEFAULT_DISABLE should be set)

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Bug#924794: marked as done (CONFIG_EFI_VARS_PSTORE_DEFAULT_DISABLE should be set)

Debian Bug Tracking System
Your message dated Mon, 18 Mar 2019 18:13:43 +0100
with message-id <[hidden email]>
and subject line Re: Bug#924794: CONFIG_EFI_VARS_PSTORE_DEFAULT_DISABLE should be set
has caused the Debian Bug report #924794,
regarding CONFIG_EFI_VARS_PSTORE_DEFAULT_DISABLE should be set
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact [hidden email]
immediately.)


--
924794: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=924794
Debian Bug Tracking System
Contact [hidden email] with problems

Package: linux-image-amd64
Version: 4.19+104

CONFIG_EFI_VARS_PSTORE_DEFAULT_DISABLE should be set.
Disables writing various crash info to the UEFI NVRAM by default.

UEFI NVRAM is of limited size and of limited write endurance.
Exceeding those limits may result in bricked motherboards.

Old fedora bug report:
https://bugzilla.redhat.com/show_bug.cgi?id=919485

Thanks.

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control: tag -1 wontfix

On Sun, 2019-03-17 at 19:09 +0100, [hidden email] wrote:
> Package: linux-image-amd64
> Version: 4.19+104

Hi, thank you for your report.
>
> CONFIG_EFI_VARS_PSTORE_DEFAULT_DISABLE should be set.
> Disables writing various crash info to the UEFI NVRAM by default.
>
> UEFI NVRAM is of limited size and of limited write endurance.

It's also very useful in writing kernel crash logs, helping debugging.

> Exceeding those limits may result in bricked motherboards.
>
> Old fedora bug report:
> https://bugzilla.redhat.com/show_bug.cgi?id=919485

As you mentionned, this bug is quite old. There was (and maybe still are)
buggy motherboard / firmware implementations. That doesn't mean the feature
shouldn't benefit to all those people with correct implementations.

The code has been hardened in the kernel, and it's also possible to not mount
/sys/fs/pstore at runtime for buggy platforms. I think it's enough.

Regards,
- --
Yves-Alexis
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