From: Bagas Sanjaya <bagasdotme@gmail.com>
To: Joshua Hudson <joshudson@gmail.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Linux IDE and libata <linux-ide@vger.kernel.org>
Cc: Hans de Goede <hdegoede@redhat.com>, Jens Axboe <axboe@kernel.dk>,
Damien Le Moal <dlemoal@kernel.org>,
OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Subject: Re: Cache coherency bug: stale reads on /dev/sda1
Date: Sun, 27 Aug 2023 08:03:49 +0700 [thread overview]
Message-ID: <ZOqg9VovoVanfuR0@debian.me> (raw)
In-Reply-To: <CA+jjjYTk=5wn2o46uNB+bJYX8xLgMP==dsJuvC94DvtN2f_6Yw@mail.gmail.com>
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On Sat, Aug 26, 2023 at 02:59:45PM -0700, Joshua Hudson wrote:
> uname -a
> Linux nova 6.4.12 #1 SMP PREEMPT_DYNAMIC Sat Aug 26 09:11:27 PDT 2023
> x86_64 GNU/Linux
>
> Kernel source is
> https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/linux-6.4.12.tar.xz
>
> Can reliably reproduce as follows:
>
> # hexedit /dev/sda1 (this is my EFI partition)
> PgDn
> # hexedit /dev/sda
> G 100000 (your value may vary--we want to seek to the start of the
> EFI partition)
> PgDn
> PgDn
> ^C
> write a marker to the padding between the BPB and the first FAT sector.
> (If your system doesn't have one, edit an error message in the boot sector)
> ^X
> # hexedit /dev/sda1
> PgDn
> Look for marker written above, find it's not there !!!
> ^C
>
> I discovered this one trying to defragment my EFI partition after a
> grub upgrade left it very fragmented due to replacing logos.
Are you sure this is hardware issue?
--
An old man doll... just what I always wanted! - Clara
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next prev parent reply other threads:[~2023-08-27 1:04 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-26 21:59 Cache coherency bug: stale reads on /dev/sda1 Joshua Hudson
2023-08-27 1:03 ` Bagas Sanjaya [this message]
2023-08-27 1:25 ` Joshua Hudson
2023-08-27 2:06 ` Al Viro
2023-08-27 2:38 ` Joshua Hudson
2023-08-27 2:50 ` Bagas Sanjaya
2023-08-27 4:17 ` Al Viro
2023-08-27 14:39 ` Joshua Hudson
2023-08-27 16:30 ` Al Viro
2023-08-27 18:33 ` Joshua Hudson
2023-09-06 7:42 ` Hannes Reinecke
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