Bug#1025537: nfsd: Kernel Oops while serving NFS

From	Olivier Mehani <shtrom+debian@ssji.net>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#1025537: nfsd: Kernel Oops while serving NFS
Date	2022-12-10 14:10 +0100
Message-ID	<FB7M5-9HOG-1@gated-at.bofh.it> (permalink)
References	<FzF5v-8LUu-1@gated-at.bofh.it> <FAT6p-9yzC-11@gated-at.bofh.it> <FzF5v-8LUu-1@gated-at.bofh.it> <FAT6p-9yzC-11@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Cross-posted to 2 groups.

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Hi Salvatore,

On Fri 09 Dec 2022 at 22:22:49 +0100, Salvatore Bonaccorso wrote:
>> On testing/bookworm, since booting on a 6-versioned linux-image, I have
>> noticed frequent hang ups of the nfs server, rendering it mostly
>> unusable. This is accompanied with Kernel Oops in the dmesg.
>> This sounds similar to previous bugs #1014793 and #1020548, both RESOLVED by
>> later patches.
>How easy can you trigger and reproduce the issue? If you can easily
>reach that situation, can you try to bisect the issue? Easiest would
>be to first pin point between Debian revisions, and later further
>bisect in upstream stable series.
>Do you have the possibility to do that?

It seems to be fairly reliable.

I'll give that a go, starting with
* linux-image-5.19.0-2-amd64_5.19.11-1_amd64.deb
* linux-image-6.0.0-1-amd64_6.0.2-1_amd64.deb

I'm not certain how to bisect further. Which source and which kconfig 
should I use to build intermediate commits?

-- 
Olivier Mehani <shtrom@ssji.net>
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Thread

Bug#1025537: nfsd: Kernel Oops while serving NFS Salvatore Bonaccorso <carnil@debian.org> - 2022-12-09 22:30 +0100
  Bug#1025537: nfsd: Kernel Oops while serving NFS Olivier Mehani <shtrom+debian@ssji.net> - 2022-12-10 14:10 +0100
    Bug#1025537: nfsd: Kernel Oops while serving NFS Salvatore Bonaccorso <carnil@debian.org> - 2022-12-10 21:30 +0100

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