From: Christoph Hellwig <hch@infradead.org>
To: alex+zkern@zazolabs.com
Cc: Yi Zhang <yi.zhang@redhat.com>, Jens Axboe <axboe@kernel.dk>,
fengnanchang@gmail.com, linux-block <linux-block@vger.kernel.org>,
Ming Lei <ming.lei@redhat.com>,
Shinichiro Kawasaki <shinichiro.kawasaki@wdc.com>
Subject: Re: [bug report][bisected] kernel BUG at lib/list_debug.c:32! triggered by blktests nvme/049
Date: Wed, 14 Jan 2026 04:43:57 -0800 [thread overview]
Message-ID: <aWePjbx5p269pXzn@infradead.org> (raw)
In-Reply-To: <4817253e-2cec-4cf8-95c4-6292e758fb8f@zazolabs.com>
On Wed, Jan 14, 2026 at 11:40:41AM +0200, Alexander Atanasov wrote:
> Double linked lists require init, single lists do not (including
> io_wq_work_list). iopoll_node is never list_init-ed. So init before adding.
>
> Can you check if this fixes it for you? If yes, i will submit it as a proper
> patch - no way to test it at the moment.
The heads (anchors) of lists need initializations. The entries added
to the list do not. I know this is a bit confusing because they use
the same time, but besides not compiling due to the double-&, the patch
would not do anything even the version that would compile.
next prev parent reply other threads:[~2026-01-14 12:44 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-07 16:39 [bug report] kernel BUG at lib/list_debug.c:32! triggered by blktests nvme/049 Yi Zhang
2026-01-07 16:48 ` Jens Axboe
2026-01-08 6:39 ` Yi Zhang
2026-01-14 5:58 ` [bug report][bisected] " Yi Zhang
2026-01-14 9:40 ` Alexander Atanasov
2026-01-14 12:43 ` Christoph Hellwig [this message]
2026-01-14 14:11 ` Ming Lei
2026-01-14 14:43 ` Jens Axboe
2026-01-14 14:58 ` Jens Axboe
2026-01-14 15:20 ` Ming Lei
2026-01-14 15:26 ` Jens Axboe
2026-01-16 11:54 ` Alexander Atanasov
2026-01-16 12:41 ` Ming Lei
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=aWePjbx5p269pXzn@infradead.org \
--to=hch@infradead.org \
--cc=alex+zkern@zazolabs.com \
--cc=axboe@kernel.dk \
--cc=fengnanchang@gmail.com \
--cc=linux-block@vger.kernel.org \
--cc=ming.lei@redhat.com \
--cc=shinichiro.kawasaki@wdc.com \
--cc=yi.zhang@redhat.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox