linux-kernel - Re: Regression: NULL pointer dereference after NFS_V4_2_READ

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Date:   Sat, 18 Feb 2023 16:09:41 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Thorsten Leemhuis <regressions@...mhuis.info>,
        Linux regressions mailing list <regressions@...ts.linux.dev>,
        Anna Schumaker <Anna.Schumaker@...app.com>,
        Trond Myklebust <trond.myklebust@...merspace.com>
Cc:     linux-nfs@...r.kernel.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Regression: NULL pointer dereference after NFS_V4_2_READ_PLUS
 (commit 7fd461c47)

On 18/02/2023 05:42, Linux regression tracking #update (Thorsten
Leemhuis) wrote:
> [TLDR: This mail in primarily relevant for Linux regression tracking. A
> change or fix related to the regression discussed in this thread was
> posted or applied, but it did not use a Link: tag to point to the
> report, as Linus and the documentation call for. Things happen, no
> worries -- but now the regression tracking bot needs to be told manually
> about the fix. See link in footer if these mails annoy you.]
> 
> On 08.01.23 09:52, Linux kernel regression tracking (#adding) wrote:
>> On 07.01.23 16:44, Krzysztof Kozlowski wrote:
>>>
>>> Bisect identified commit 7fd461c47c6c ("NFSv4.2: Change the default
>>> KConfig value for READ_PLUS") as one leading to NULL pointer exception
>>> when mounting NFS root on NFSv4 client:
>> [...]
>> Thanks for the report. To be sure the issue doesn't fall through the
>> cracks unnoticed, I'm adding it to regzbot, the Linux kernel regression
>> tracking bot:
>>
>> #regzbot ^introduced 7fd461c47
>> #regzbot title nfs: NULL pointer dereference since NFS_V4_2_READ_PLUS is
>> enabled by default
>> #regzbot ignore-activity
> 
> #regzbot fix: 896e090eefedeb8a715ea19938a2791c32679

I see it was posted and merged as "Revert "NFSv4.2: Change the default
KConfig value for READ_PLUS"". It's nice to give credits to people who
report bugs with "Reported-by" tag.

Best regards,
Krzysztof