linux-kernel - Re: [BUG] Linux 6.8.10 NPE

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Message-ID: <06f50224-9d9e-4118-adf4-ac89b0a06086@leemhuis.info>
Date: Fri, 24 May 2024 13:28:12 +0200
From: "Linux regression tracking (Thorsten Leemhuis)"
 <regressions@...mhuis.info>
To: Greg KH <gregkh@...uxfoundation.org>,
 Paul Grandperrin <paul.grandperrin@...il.com>
Cc: rankincj@...il.com, linux-kernel@...r.kernel.org, stable@...r.kernel.org,
 Linux kernel regressions list <regressions@...ts.linux.dev>
Subject: Re: [BUG] Linux 6.8.10 NPE

[CCing the regression list, as it should be in the loop for regressions:
https://docs.kernel.org/admin-guide/reporting-regressions.html]

On 22.05.24 17:12, Greg KH wrote:
> On Sun, May 19, 2024 at 01:28:58PM +0200, Paul Grandperrin wrote:
>>> I am using vanilla Linux 6.8.10, and I've just noticed this BUG in my
>> dmesg log. I have no idea what triggered it, and especially since I
>> have not even mounted any NFS filesystems?!
>>
>> Hi all,
>> I have the exact same bug. I'm using the NixOS kernel but as soon as it was
>> updated to 6.8.10 my server has gone in a crash-reboot-loop.
>>
>> The server is hosting an NFS deamon and it crashes about 10 seconds after
>> the tty login prompt is displayed.
>>
>> Dowgrading to 6.8.9 fixes the issue.
> 
> Any chance you all can use 'git bisect' to track down the offending
> commit?

Paul, any progress on this?

BTW, there is also a report about a NFS related general protection
fault, see this thread:

https://lore.kernel.org/all/CAK8fFZ7rbh5o9XG1D5KAPSRyES-8W8AphxsLJXOWUFZK49i8fA@mail.gmail.com/

It was bisected to 4b14885411f74b ("nfsd: make all of the nfsd stats
per-network namespace") [v6.9-rc1, v6.8.10 (abf5fb593c90d3)]

Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat)
--
Everything you wanna know about Linux kernel regression tracking:
https://linux-regtracking.leemhuis.info/about/#tldr
If I did something stupid, please tell me, as explained on that page.