linux-kernel - Re: Regression v6.11 booting cannot mount harddisks (xfs)

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Message-ID: <0ad933b9-9df5-4acc-aa72-d291aa7d7f4d@kernel.org>
Date: Tue, 10 Sep 2024 21:19:12 +0200
From: Jesper Dangaard Brouer <hawk@...nel.org>
To: Jens Axboe <axboe@...nel.dk>, Damien Le Moal <dlemoal@...nel.org>,
 Linus Torvalds <torvalds@...uxfoundation.org>,
 LKML <linux-kernel@...r.kernel.org>, Christoph Hellwig <hch@...radead.org>
Cc: Netdev <netdev@...r.kernel.org>, linux-ide@...r.kernel.org,
 cassel@...nel.org, handan.babu@...cle.com, djwong@...nel.org,
 Linux-XFS <linux-xfs@...r.kernel.org>, hdegoede@...hat.com,
 "David S. Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>,
 kernel-team <kernel-team@...udflare.com>
Subject: Re: Regression v6.11 booting cannot mount harddisks (xfs)



On 10/09/2024 20.38, Jens Axboe wrote:
> On 9/10/24 11:53 AM, Jesper Dangaard Brouer wrote:
>> Hi Hellwig,
>>
>> I bisected my boot problem down to this commit:
>>
>> $ git bisect good
>> af2814149883e2c1851866ea2afcd8eadc040f79 is the first bad commit
>> commit af2814149883e2c1851866ea2afcd8eadc040f79
>> Author: Christoph Hellwig <hch@....de>
>> Date:   Mon Jun 17 08:04:38 2024 +0200
>>
>>      block: freeze the queue in queue_attr_store
>>
>>      queue_attr_store updates attributes used to control generating I/O, and
>>      can cause malformed bios if changed with I/O in flight.  Freeze the queue
>>      in common code instead of adding it to almost every attribute.
>>
>>      Signed-off-by: Christoph Hellwig <hch@....de>
>>      Reviewed-by: Bart Van Assche <bvanassche@....org>
>>      Reviewed-by: Damien Le Moal <dlemoal@...nel.org>
>>      Reviewed-by: Hannes Reinecke <hare@...e.de>
>>      Reviewed-by: Chaitanya Kulkarni <kch@...dia.com>
>>      Link: https://lore.kernel.org/r/20240617060532.127975-12-hch@lst.de
>>      Signed-off-by: Jens Axboe <axboe@...nel.dk>
>>
>>   block/blk-mq.c    | 5 +++--
>>   block/blk-sysfs.c | 9 ++-------
>>   2 files changed, 5 insertions(+), 9 deletions(-)
>>
>> git describe --contains af2814149883e2c1851866ea2afcd8eadc040f79
>> v6.11-rc1~80^2~66^2~15
> 
> Curious, does your init scripts attempt to load a modular scheduler
> for your root drive?

I have no idea, this is just a standard Fedora 40.

> 
> Reference: https://git.kernel.dk/cgit/linux/commit/?h=for-6.12/block&id=3c031b721c0ee1d6237719a6a9d7487ef757487b

The commit doesn't apply cleanly on top of af2814149883e2c185.

$ patch --dry-run -p1 < ../block-jens/block-jens-bootfix.patch
checking file block/blk-sysfs.c
Hunk #1 FAILED at 23.
Hunk #2 succeeded at 469 (offset 56 lines).
Hunk #3 succeeded at 484 (offset 56 lines).
Hunk #4 succeeded at 723 with fuzz 1 (offset 45 lines).
1 out of 4 hunks FAILED
checking file block/elevator.c
Hunk #1 FAILED at 698.
1 out of 1 hunk FAILED
checking file block/elevator.h
Hunk #1 FAILED at 148.
1 out of 1 hunk FAILED

I will try to apply and adjust manually.

--Jesper